CN102161233B - Bonding method using laser - Google Patents

Bonding method using laser Download PDF

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Publication number
CN102161233B
CN102161233B CN201010606165.5A CN201010606165A CN102161233B CN 102161233 B CN102161233 B CN 102161233B CN 201010606165 A CN201010606165 A CN 201010606165A CN 102161233 B CN102161233 B CN 102161233B
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CN
China
Prior art keywords
laser
patterned layer
component
intermediate member
heat
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CN201010606165.5A
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Chinese (zh)
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CN102161233A (en
Inventor
山田功作
村上博文
藤田和也
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Hayakawa Rubber Co Ltd
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Hayakawa Rubber Co Ltd
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Publication of CN102161233A publication Critical patent/CN102161233A/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1677—Laser beams making use of an absorber or impact modifier
    • B29C65/168—Laser beams making use of an absorber or impact modifier placed at the interface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1629—Laser beams characterised by the way of heating the interface
    • B29C65/1635—Laser beams characterised by the way of heating the interface at least passing through one of the parts to be joined, i.e. laser transmission welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1677—Laser beams making use of an absorber or impact modifier
    • B29C65/1683—Laser beams making use of an absorber or impact modifier coated on the article
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/481—Non-reactive adhesives, e.g. physically hardening adhesives
    • B29C65/4815—Hot melt adhesives, e.g. thermoplastic adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
    • B29C65/5057—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like positioned between the surfaces to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/305—Decorative or coloured joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/45—Joining of substantially the whole surface of the articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1603—Laser beams characterised by the type of electromagnetic radiation
    • B29C65/1612—Infrared [IR] radiation, e.g. by infrared lasers
    • B29C65/1616—Near infrared radiation [NIR], e.g. by YAG lasers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/343—Making tension-free or wrinkle-free joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/74—Joining plastics material to non-plastics material
    • B29C66/746—Joining plastics material to non-plastics material to inorganic materials not provided for in groups B29C66/742 - B29C66/744
    • B29C66/7465—Glass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • Toxicology (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Laser Beam Processing (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)

Abstract

The invention discloses a bonding method using laser, wherein a first part and a second part are engaged by laser without the melting or decomposition of the pattern layer so as to make the appearance thereof more beautiful. The pattern layer 4 is non-permeability for laser. An intermediate part 5 for being bonded by laser is arranged adjacent to the pattern layer 4. Laser L with a temperature no more than the melting or decomposition temperature of the pattern layer 4 is irradiated on the pattern layer 4 for heating the pattern layer. The heat of the pattern layer 4 is used for heating the intermediate part 5.

Description

Use the joint method of laser
Technical field
The present invention relates to a kind of joint method that uses laser to engage first component and second component.
Background technology
For example, as the method that the first and second parts of being made up of resin material are engaged, extensively adopt the joint method that utilizes Ear Mucosa Treated by He Ne Laser Irradiation.While using laser to engage, conventionally using first component as the laser permeation member with laser-transmissible, using second component as the non-permeability parts of the laser with the non-permeability of laser.And, by after overlapping the first and second parts, irradiate laser from first component one side.This laser sees through first component and is absorbed by second component.So, second component is just heated, and then the composition surface melting of the first and second parts solidifies, and two parts become the state having engaged.
In above-mentioned common laser is deposited, must there be parts to there is the non-permeability of laser, for example, in patent documentation 1～3, disclose and between the parts with laser-transmissible, carried out deposited method.In the disclosed method of these documents, make between first component and second component to exist the toner that contains absorbing laser or the resin material of coating, allow this resin material absorbing laser melting, thus the first and second parts are engaged.
Patent documentation 1: Japanese Laid-Open Patent Publication JP 2003-181931 communique
Patent documentation 2: Japanese Laid-Open Patent Publication JP 2004-1071 communique
Patent documentation 3: Japanese Laid-Open Patent Publication JP 2005-238462 communique
Summary of the invention
-invent technical problem to be solved-
But in recent years, for example, for box used for cosmetic, residential equipment with or package member for electric equipment products, outward appearance is paid attention to very much, carry out various design processing.For example, first component to outside and the second component of inner side engage while forming package member, implement printing etc. at the back side of first component with light transmission and form the patterned layer of pattern by being provided with, can when this first component is observed patterned layer, pattern, present stereovision seeing through from the outside of first component.
In the time carrying out such design processing, if use disclosed method in patent documentation 1～3 to carry out laser cladding, become the patterned layer absorbing laser between first component and second component.Then, this patterned layer melting or decomposition carry out deposited to the first and second parts.Once because even patterned layer melting or decomposition also can not restore to the original state cooling, so cause the deterioration of outward appearance.
The present invention completes in view of the premises, and its object is, in the time that the patterned layer that can see from first component one side is set, can make patterned layer melting or decomposition the first and second parts are engaged, thereby make outward appearance more attractive in appearance.
-in order to the technical scheme of technical solution problem-
In order to reach above-mentioned purpose, in the present invention, between first component and second component, be adjacent to patterned layer laser joint intermediate member is being set, not allow the degree laser of patterned layer melting or decomposition heat patterned layer, thereby utilize the heat of this patterned layer having heated to heat intermediate member, the first and second parts are engaged.
The invention of first aspect is characterized in that, with laser to having in the first component of light transmission and joint method that second component engages, in described first component and described second component, at least one parts is made up of the material with laser-transmissible, the non-permeability patterned layer of laser is set so that pattern is presented on the outside of this first component at least one parts in described first component and described second component, between this first component and second component, be adjacent to described patterned layer and be provided for the laser joint intermediate member that described first component and described second component are engaged, irradiate for this patterned layer being heated to become the laser that is no more than the melting of this patterned layer or the set point of temperature of decomposition temperature towards described patterned layer from described parts one side with laser-transmissible, utilize the heat of this patterned layer to heat described intermediate member, described first component and described second component are engaged.
,, being made by the material with laser-transmissible at first component, irradiate laser from first component one side.This laser sees through first component and is absorbed by patterned layer, thereby patterned layer is heated.The heat that recycles this patterned layer heats intermediate member.So because the heated melting of intermediate member or softening this intermediate member are closely bonded on the first and second parts, and these two parts are engaged with the bond strength of regulation.Now patterned layer can melting or decomposition.
, can observe from the outside of first component the pattern of patterned layer, thereby can obtain the design that has levels and feel under the state of the first and second components bonding.Because this patterned layer can melting or decomposition, so outward appearance is more attractive in appearance.
The invention of second aspect is characterized in that, in the invention of first aspect, intermediate member has the adhesiveness sticking on first component and second component.
According to this structure, can, before irradiating laser, utilize intermediate member to make easily the first and second parts integrated.
The invention of the third aspect is characterized in that, first or the invention of second aspect in, intermediate member is by being made by the heat-fusible materials of the heat of patterned layer institute melting.
The invention of fourth aspect is characterized in that, in the invention of the third aspect, heat-fusible materials is thermoplastic elastomer (TPE).
The invention of the 5th aspect is characterized in that, in the invention of the third aspect, heat-fusible materials is acrylic compounds heat-fusible materials.
The invention of the 6th aspect is characterized in that, in the invention of the either side aspect first to five, intermediate member has thermal conductivity filler.
According to this structure, the heat of patterned layer is easy to be transmitted to whole intermediate member by thermal conductivity filler.
The invention of the 7th aspect is characterized in that, in the invention of the either side aspect first to six, intermediate member is configured to, patterned layer adjacent with side Ear Mucosa Treated by He Ne Laser Irradiation opposite direction and described patterned layer, be mixed with the laser absorbent of absorbing laser in described intermediate member.
According to this structure, for example, in the time irradiating laser from first component one side, first the laser that sees through first component absorbed by patterned layer, and in the time that laser is not absorbed by patterned layer completely, a small amount of laser sees through patterned layer and absorbed by the laser absorbent of intermediate member.So, just can heat intermediate member.
-invention effect-
According to the invention of first aspect, the non-permeability patterned layer of laser is set so that pattern is presented on the outside of first component, be provided with laser joint intermediate member because be adjacent to patterned layer between first component and second component, with laser, patterned layer is heated to become the set point of temperature that is no more than melting or decomposition temperature, utilize the heat of patterned layer to heat intermediate member so that the first and second parts are engaged, so patterned layer can melting or decomposition, can obtain the joint product that outward appearance is more attractive in appearance.
According to the invention of second aspect, because intermediate member has the adhesiveness sticking on first component and second component, so can be before irradiating laser, make easily first component and second component integrated and suppress location dislocation, and can fully guarantee bond strength, thereby can obtain the better joint product of outward appearance.
According to the invention of the third aspect, because intermediate member is heat-fusible materials, so can obtain the adhesive strength of the first and second enough parts.
According to the invention of fourth aspect, because intermediate member is thermoplastic elastomer (TPE), so can utilize the heat of patterned layer to obtain reliably bonding force.
According to the invention of the 5th aspect, because intermediate member is acrylic compounds heat-fusible materials, so can reduce costs and obtain enough adhesive strengths.
According to the invention of the 6th aspect, because be mixed with thermal conductivity filler in intermediate member, so the heat of patterned layer is easy to be transmitted to whole intermediate member, thereby makes reliably intermediate member melting or soften and reliably the first and second parts engaged.
According to the invention of the 7th aspect, because be mixed with laser absorbent at intermediate member, so can allow intermediate member absorb the laser not absorbed by patterned layer.So, just can effectively utilize laser to heat intermediate member.
Brief description of the drawings
Fig. 1 is the cutaway view of the related joint product of embodiment;
Fig. 2 is the cutaway view of the state before representing each parts to engage.
Description of reference numerals
1 joint product
2 base materials (second component)
3 light transparent member (first component)
4 patterned layer
5 intermediate members
L laser
Detailed description of the invention
Below, with reference to the accompanying drawings embodiments of the present invention are elaborated.Should illustrate, below embodiment be preferred example in essence, do not limit the intentions such as the present invention, application of the present invention or purposes scope of the present invention.
Fig. 1 represents to utilize the related joint method of embodiments of the present invention to engage formed joint product 1.These joint product 1 for example as box used for cosmetic, residential equipment with or electric equipment products package member use, to form the base material 2 of inner side and stacked the formed joint product of light transparent member 3 in formation outside of this package member, in light transparent member 3, to be provided with the patterned layer 4 that can see from outside.Base material 2 and light transparent member 3 are engaged and make them integrated.Light transparent member 3 is first component of the present invention, and base material 2 is second component of the present invention.
Base material 2 is the plate-shaped members that do not allow the material of the non-permeability of laser that laser sees through make by having.The non-permeability of laser is the laser absorption of absorbing laser, even if refer to that part sees through and/or reflected the laser as heating source, also can absorb the character of the laser of remainder, also comprises the situation that laser is all absorbed.As the material with this character, for example, except metal, pottery, the material that also has in resin or rubber hybrid pigment or dyestuff to form.As the non-photopermeability of laser, for example transmitance of the laser of optimal wavelength 940nm is less than 15%.In the present embodiment, base material 2 is made up of metal material.
Light transparent member 3 is by water white transparency and has the plate-shaped member that allows the material of the laser-transmissible that laser sees through make.Laser-transmissible refers to, can reflect hardly the laser that allows with laser also not absorbing as heating source sees through, even or see through and/or reflected a part of laser can melting yet, and the character that remaining laser is seen through, also comprise the situation that makes the whole permeable materials of laser itself.Light transparent member 3 for example can be made up of thermoplastic resin, particularly can list: polyethylene (high density polyethylene (HDPE) (HDPE), low density polyethylene (LDPE) (LDPE), Linear low-density polyethylene (LLDPE), very low density polyethylene (VLDPE), ultra-low density polyethylene (ULDPE), VHD polyethylene (UHDPE), polyethylene), polypropylene (polypropylene copolymer (PP Co-Polymer), polypropylene homopolymer (PP Homo-Polymer), polypropylene terpolymer (PP Ter-Polymer)), polyvinyl chloride (PVC), polystyrene (PS), polymethyl methacrylate (PMMA), acrylonitrile-butadiene-styrene resin (ABS), SAN (SAN), K-resin, SBS resin (SBS resin), polyvinylidene chloride resin (PVDC resin), ethylene-vinyl acetate resin (EVA resin), acrylic resin, butyral resin, silicones, polyamide (PA, PA6, PA66, PA46, PA610, PA612, PA6/66, PA6/12, PA6T, PA12, PA1212, PAMXD6), ethylene tetrafluoroethylene copolymer, liquid crystal polymer, polybutylene terephthalate, polyether-ether-ketone, polyether-ketone, PEKK, PEN, PETG, polyimides, polyacetals, polyamide-imides, polyphenylene oxide, polyphenylene oxide, Merlon, polyphenylene sulfide, polysulfones, poly-second sulphur sulfone (polythioethylsulfone), polytetrafluoroethylene (PTFE), polyether sulfone and PEI etc.
In addition, thermoplastic resin also comprises chemical bonding polar functional group and the modified resin that forms, particularly can list: acrylic acid modified olefin resin, maleic acid modified olefin resin, chlorination modified olefin resin (chlorinated polypropylene (CPP), haloflex (CPE)), silane-modified olefin resin, ionomer resin, modified nylon olefin resin, epoxy modified resin, ethylene-vinyl alcohol resin (EVOH), ethylene vinyl acetate resin, the resins such as hot melt adhesive resin, can also be mixture or the composition of these resins and above-mentioned thermoplastic resin.
Light transparent member 3 can be thermoplastic elastomer (TPE), particularly can list: phenylethylene elastomer, olefin type elastomer, polyester elastomer, polyvinyl chloride-base elastomer, polyamide-based elastomer, polybutadiene elastomer, isoprenoid elastomer, ion beam and amorphous polyethylene class elastomer (commodity example: DUPONT-MITSUI POLYCHEMICALS CO., LTD. Ha イ ミ ラ Application processed), haloflex and amorphous polyethylene class elastomer (commodity example: the ミ ラ processed プ レ of Mitsubishi Chemical mono-Application), fluorine class elastomer, polyurethanes elastomer, acrylic elastomer etc.
Light transparent member 3 can be also thermosetting resin, particularly can list: phenolic resins (phenolresin), Lauxite, melamine resin, epoxy resin, unsaturated polyester resin etc.
Light transparent member 3 can also be to have heat cured rubber, particularly can enumerate: natural rubber, isoprene rubber, ethylene propylene diene rubber, EPM, butadiene-styrene rubber, butadiene rubber, CSM, isoprene rubber, chloroprene rubber, acrylic rubber, ECD, polyurethane rubber, acrylonitrile-butadiene rubber, hydrogenated nitrile-butadiene rubber, fluorubber and silicon rubber etc.
And, can make light transparent member 3 by mix the compound resin that reinforcing material or packing material make in above-mentioned thermoplastic resin or thermosetting resin.
In above-mentioned resin, elastomer, for example can mix following additive: be selected from least one additive in the group of heat stabilizer, antioxidant, ultra-violet stabilizer, conductive agent, nucleator, releasing agent, fire retardant, antistatic additive, processing aid, painted and functional pigment or dyestuff, crosslinking agent, plasticizer and vulcanizing agent.In the time mixing colouring pigment or dyestuff, combined amount wants to guarantee the laser-transmissible of regulation.
Except above-mentioned resin, light transparent member 3 can also be made up of such as soda-lime glass, lead glass, Pyrex etc.And, can also be safety glass, laminated glass, laminated glass etc.As laser-transmissible, for example the transmitance of the laser of optimal wavelength 940nm is more than 20%, more preferably more than 50%.In addition, light transparent member 3 is not limited to colourless, can be also light color, as long as have the light transmission that can see from outside patterned layer 4.
The thickness of base material 2 and light transparent member 3 is according to the kind of package member etc. and different, and thickness is number mm left and right.And base material 2 can be made up of laser-transmissible parts.
Be to be provided with patterned layer 4 so that pattern is presented on the outside of light transparent member 3 on the face of base material 2 one sides at the back side of light transparent member 3.This patterned layer 4 is made up of printing film, and the back side that printing film is attached to light transparent member 3 by the ink that makes to contain dyestuff or pigment forms.For curability ink compound, for example, can list: acrylate, urethane acrylate (urethane acrylate), epoxy acrylate, carboxy-modified epoxy acrylate, polyester acrylate, unsaturated polyester resin, Copolymer acrylate, polyacrylic acid acrylic ester (polyacrylacrylate), cycloaliphatic epoxy resin, glycidyl ester type epoxy resin, vinethene compound, oxetane compound etc.Curability ink for example can list: natural drying curing type, utilize the dry thermohardening type forming of sintering, use curing agent dual-pack reaction-curable, make it curing radiating light curing type, paint etc. by ultraviolet ray or electron ray etc.Even if as long as the next ink thermoplasticity of laser irradiation condition below melting point is also no problem.And as dyestuff, as long as having the dyestuff of the non-permeability of laser, the kinds such as synthetic dyestuffs, fluorescent dye such as the natural dyes such as madder, safflower, reaction, sulfuration, naphthols are all no problem.As pigment, as long as there is the pigment of the non-permeability of laser, for example can list the inorganic pigment such as carbon black or composite oxides class pigment, the organic pigments such as phthalocyanine pigment, azo pigment, mordant pigment, many lopps pigment, can use the various pigment that have with the corresponding non-permeability of optical maser wavelength.Print film by use and form patterned layer 4, can obtain exquisite pattern.As printing process, for example, can use the various printing processes such as letterpress, intaglio printing, flexographic printing, hectographic printing, serigraphy, intaglio printing (gravure printing), laser printing, ink jet printing.
The pattern being made up of patterned layer 4 for example comprises word, figure, symbol, picture, gradual change pattern (gradationpattern), by various forms such as monochromatic coating comprehensively or the patterns that formed by above combinations of patterns.As the thickness of patterned layer 4, for example, more than 1 μ m below 100 μ m, but be not limited to this scope.For example, and as the non-permeability of laser of patterned layer 4, the transmitance of the laser of optimal wavelength 940nm is less than 15%.
Patterned layer 4 except being formed by printing film as mentioned above, for example, can also form by vapor-deposited film, pad pasting, barrier coating coating (primer) etc.The in the situation that of vapor-deposited film, patterned layer 4 as thin as a wafer.And not needing whole patterned layer 4 is all the non-permeability of laser, can only have a part corresponding with the bonding part of base material 2 and light transparent member 3 is the non-permeability of laser.
Be on the face of light transparent member 3 one sides, to be provided with laser to engage with intermediate member 5 on the surface of base material 2, this intermediate member 5 is adjacent to patterned layer 4.
Intermediate member 5 is made up of sheet elastomeric element.Particularly intermediate member 5 is by because being made by the heat-fusible materials of the heat melting of the patterned layer 4 after LASER HEATING, preferably near normal temperature, demonstrates in the polymer substance (binding agent or elastomer) of caoutchouc elasticity and has thermoplastic material.That is, can use the material as intermediate member 5 such as above-mentioned binding agent or thermoplastic elastomer (TPE) or cross-linked rubber etc., be not particularly limited, can list rubber-like, acrylic compounds, carbamates, silicon class etc. as binding agent.As thermoplastic elastomer (TPE), for example can list: phenylethylene elastomer, olefin type elastomer, polyester elastomer, polyvinyl chloride-base elastomer, polyamide-based elastomer, polybutadiene elastomer, isoprenoid elastomer, ion beam and amorphous polyethylene class elastomer (commodity example: commodity example: DUPONT-MITSUIPOLYCHEMICALS CO., LTD. Ha イ ミ ラ Application processed), haloflex and amorphous polyethylene class elastomer (commodity example: the ミ ラ processed プ レ of Mitsubishi Chemical mono-Application), fluorine class elastomer, polyurethanes elastomer, acrylic elastomer etc.Thermoplastic elastomer (TPE) is very common as the matrix of rubber-like binding agent, is not particularly limited, and can coordinate tackifier or oily, aqueous oligomer, crosslinking agent etc. to form binding agent.
As tackifier, particularly for example can list rosin based tackifying resin, be the unmodified rosin such as gum rosin, wood rosin, toll oil rosin (natural rosin), utilize the methods such as hydrogenation, disproportionation, polymerization these unmodified rosin to be carried out to the modified rosin (Foral, disproportionated rosin, newtrex and the rosin that forms through other chemical modification etc.) of modification formation, can list in addition various rosin derivatives etc.As above-mentioned rosin derivative, for example can list: with alcohols, unmodified rosin is carried out the ester compounds of the rosin of esterification formation, or with alcohols, the modified rosins such as Foral, disproportionated rosin, newtrex are carried out the rosin ester classes such as the ester compounds of the modified rosin of esterification formation; The unrighted acid modified rosin class of unmodified rosin or modified rosin (Foral, disproportionated rosin, newtrex etc.) being carried out to modification formation with unrighted acid; With unrighted acid, rosin ester class is carried out the unrighted acid modified rosin ester class of modification formation; Carboxyl in unmodified rosin, modified rosin (Foral, disproportionated rosin, newtrex etc.), unrighted acid modified rosin class or unrighted acid modified rosin ester class is reduced and processes the rosin alcohols forming; The slaine of the rosin based (particularly rosin ester class) such as unmodified rosin, modified rosin or various rosin derivatives.As rosin derivative, can use and utilize acid catalyst to make rosin based (unmodified rosin, modified rosin or various rosin derivatives etc.) and phenol generation addition reaction and carry out rosin phenol resin that thermal polymerization obtains etc.
As terpene tackifying resin, for example can list: the terpene resins such as australene polymer, beta-pinene polymer, cinene polymer, or these terpene resins are carried out to the modification terpene resin (for example, terpene phenolic air aldehyde resin, phenylethene modified terpene resin, aromatic series modification terpene resin, hydrogenation terpene resin etc.) of modification (phenol modification, aromatic series modification, hydrogenation modification, hydrocarbon modification etc.) formation etc.
As hydro carbons tackifying resin, for example can list: the aliphatic category hydrocarbon resin [terpenes that carbon number is 4～5 or the diene (terpenes such as butene-1, isobutene, amylene-1, the diene such as butadiene, 1,3-pentadiene, isoprene etc.) etc. aliphatic hydrocarbon polymer etc.]; Fragrance same clan hydrocarbon resin [polymer of the fragrant same clan hydrocarbon (styrene, vinyltoluene, AMS, indenes, methyl indenes etc.) containing vinyl that carbon number is 8～10 etc.]; Aliphatic category cyclic hydrocarbon resin [the ester ring type hydrocarbon resins etc. that so-called " C4 petroleum distillate " or " C5 petroleum distillate " is carried out to the polymer of polymerization forms again after Cyclodimerization body ester ring type hydrocarbon resins, cyclic diolefine compound (cyclopentadiene, bicyclopentadiene, ethylidene norbornene, cinene etc.) or its hydride, the aromatic rings of fragrant same clan hydrocarbon resin or aliphatic, fragrant same clan Petropols is carried out to hydrogenation formation]; Aliphatic, fragrant same clan Petropols (styrene-olefinic copolymer etc.); Aliphatic, alicyclic ring same clan Petropols; Hydrogenated hydrocarbon resins; Benzofuran resinoid; The various hydrocarbon resins such as coumarone-indene resinoid.Can from roughly divide into the oil of paraffinic, cycloalkane, aromatic hydrocarbons, select.
As aqueous oligomer, can be selected from rubber-like, polyesters, other molecular weight such as acrylic compounds, phenylethylene, polyisoprene or butadiene is the high-viscosity polymer of hundreds of～thousands of left and right.In addition preferably use as required at least one in the group that is selected from heat stabilizer, antioxidant, ultra-violet stabilizer, conductive agent, nucleator, releasing agent, fire retardant, antistatic additive, processing aid, painted and functional pigment or dyestuff, crosslinking agent, plasticizer and vulcanizing agent.
As cross-linked rubber, for example, can list: natural rubber, isoprene rubber, ethylene propylene diene rubber rubber, EPM, butadiene-styrene rubber, butadiene rubber, CSM, isoprene rubber, chloroprene rubber, acrylic rubber, ECD, polyurethane rubber, acrylonitrile-butadiene rubber, hydrogenated nitrile-butadiene rubber, fluorubber and silicon rubber etc.Can in these cross-linked rubbers, coordinate as required various additives.For example can list: aromatic mercaptans class, aromatic disulfides class, aromatic mercaptans zinc class peptizer; Organic acid, nitroso compound class, sulfonamide antiscorchiag agent; Paraffinic, the fragrant same clan, cycloalkane, aqueous rubber-like plasticizer; The synthetic resin tackifier such as rosin derivative class, terpene natural resin class tackifier or benzofuran (indenes) resinae, Petropols class, alkyl phenol resin class, dimethylbenzene, formaldehyde resin; Halogen, metal hydrate class, silicon class, phosphorus type flame retardant; Antioxidant; Heat stabilizer; Light stabilizer; Ultra-violet absorber; Lubricant; Pigment; Crosslinking agent; Crosslinking coagent; Anti-recovery agent; Silane coupler, these common rubber plastic fiting chemical products of titanate coupling agent.
The melt temperature of intermediate member 5 is set as lower than the melting of patterned layer 4 or decomposition temperature.
When material using binding agent or cross-linked rubber as intermediate member 5, situation about declining for fear of the deposited property being caused by laser, the preferably low material of the degree of cross linking.
Preferably the thickness of intermediate member 5 is for example more than 10 μ m below 1000 μ m, but is not limited to this scope.When intermediate member 5, it is film-form as thin as a wafer time, and when thicker, it is tabular.
As the heat-fusible materials of making intermediate member 5, can be for example more specifically to there is at normal temperatures flexible acrylic compounds block polymer.As heat-fusible materials, for example, can be styrene-isoprene-phenylethene (SIS), s-B-S (SBS), styrene-hydrogenated butadiene-styrene (SEBS) etc.
In intermediate member 5, be mixed with thermal conductivity filler.As thermal conductivity filler, for example, the metal oxides such as aluminium oxide, silica, magnesia, or the inorganic nitride such as silicon nitride, boron nitride, aluminium nitride, titanium nitride, zirconium nitride, tantalum nitride, niobium nitride etc.
As other thermal conductivity filler, can list: potassium titanate, aluminium borate, magnesium sulfate, calcium carbonate etc. and their whisker, glass fibre, carbon fiber, metallic fiber, aramid fiber, asbestos, carborundum, pottery, barium sulfate, calcium sulfate, white bole, clay, silica, pyrophyllite, bentonite, sericite, zeolite, montmorillonite, mica (mica), mica, nepheline syenite, talcum, attapulgite, wollastonite, polycrystalline mullite fibre (PMF), ferrite, calcium silicates, magnesium carbonate, dolomite, zinc oxide, titanium oxide, magnesia, iron oxide, molybdenum bisuphide, graphite, gypsum, bead, glass dust, glass hollow ball, quartz, quartz glass etc.The filler using can be hollow.And these fillers can be used together two or more, can also carry out using after pretreatment with coupling agents such as silanes, titanium classes as required.
Can use the part as intermediate member 5 such as thermal conductivity film, cloth, aluminium foil or Copper Foil.Preferably the thickness of aluminium foil is for example 50 μ m left and right, and preferably the thickness of Copper Foil is for example 30 μ m left and right.And be not limited to aluminium foil or Copper Foil, also can use various metallic films or the sheet metal part as intermediate member 5.
In intermediate member 5, be mixed with the laser absorbent of absorbing laser.As laser absorbent, for example, in black absorption agent, can list: the inorganic pigment such as carbon black, dim, boneblack, graphite or metal oxide iron oxide black (magnetite), titanium are black, chromium oxide; The organic pigments such as AZOpigments, many lopps pigment.
The absorbent that absorbs near infrared region wavelength also can use as laser absorbent, for example can preferably use anthocyanin pigment, thionyl nickel complex, two (cis-1, 2-toluyl groups) ethene-1, 2-bis-mercaptan nickel (bis (cis-1, 2-toluyl) ethylene-1, 2dithiolate nickel), two (1-chloro-3, 4 two mercaptan) metal complex such as nickel TBuA, and can use and under 830nm, have the lignocaine of maximum absorption wavelength naphthols side acid cyanines (diethylaminonaphthol squarylium), side's sour cyanines (squarylium) pigments such as dimethylamino naphthols side acid cyanines.And can preferably use polymethine class pigment, (two) inferior amine salt (immonium) class pigment, phthalocyanines pigment, triarylmethane class pigment, naphthalene Quinone Pigments etc.
Laser absorbent is not limited to above-mentioned laser absorbent, as long as the material of absorbing laser heating just can make its dissolving or disperse to use.
In intermediate member 5, be mixed with tackifier.So, intermediate member 5 just has adhesiveness at the face of base material 2 one sides with at the face of light transparent member 3 one sides.Therefore, intermediate member 5 sticks in base material 2 and light transparent member 3.The adhesion of intermediate member 5 is set as: according to 10.4 of JIS Z0237 determine to SUS304 plate 180 degree peel adhesion more than 0.1N/25mm.
Can list above-mentioned tackifier as tackifier.
The SP value (solubility parameter) of the resinous principle of intermediate member 5 and patterned layer 4 more approach that thus intermiscibility is just better can obtain very high bond strength.
Then, the manufacture main points of above-mentioned joint product 1 are described.First, form patterned layer 4 at the back side of light transparent member 3.Make the coloring printing ink that contains pigment be attached to the back side of light transparent member 3 with printing machine etc.
In the situation that making patterned layer 4 for vapor-deposited film, utilize evaporation coating device to make the back side of the evaporation thing evaporations such as metal in light transparent member 3; In the time making patterned layer 4 for film, at the back side of light transparent member 3 sticking film; In the time making patterned layer 4 for subbing, at the back side of light transparent member 3 barrier coating coating.
And, can irradiate for example UV (ultraviolet ray), EB (electron ray) to base material 2, or use ozone etc.So, just can make the bonding force after Ear Mucosa Treated by He Ne Laser Irradiation improve.
Configuration intermediate member 5 is configured between base material 2 and light transparent member 3, by overlapping to base material 2, intermediate member 5 and light transparent member 3.Now, because intermediate member 5 has adhesiveness, so light transparent member 3 and base material 2 stick on intermediate member 5.So, because light transparent member 3 becomes the state being temporarily fixed on base material 2, so in the time irradiating aftermentioned laser, even if two parts 2,3 are not clamped and can suppress location dislocation yet.In addition, also can clamp base material 2 and light transparent member 3 by through-thickness, because by clamping material 2 and light transparent member 3, the generation of bubble between the base material 2 that the heating can suppress by irradiation laser time causes and expansion, base material 2 and the light transparent member 3 of light transparent member 3, so can further improve the reliability of joint.
Then, as shown in Figure 1, irradiate laser L from light transparent member 3 one sides towards patterned layer 4.The device that irradiates this laser L can use well-known device.As the kind of laser L, can be for example any laser such as gas laser, Solid State Laser, semiconductor laser, the kind of laser L does not limit.The kind of laser L can see through degree etc. according to the laser of the melting of the thickness of the material of base material 2 and light transparent member 3, light transparent member 3, patterned layer 4 or decomposition temperature, light transparent member 3 and suitably select.And laser L can be single wavelength laser, can be also the laser with more than two wavelength.
The power output of laser irradiation device is set as the low value of several watts of left and right, and the size of power output is that patterned layer 4 can not seen through light transparent member 3 and arrive the laser L of patterned layer 4 and the degree of melting or decomposition.For the sweep speed of laser L, being set as patterned layer 4 can melting or the speed of decomposition.In the time that engagement range is wider than the irradiation diameter of laser L, the mobile lasing light emitter in one side or joint object (base material 2, intermediate member 5 and light transparent member 3) carry out the irradiation of laser L on one side as required.
The laser L irradiating sees through light transparent member 3 and arrives patterned layer 4.The laser L that has arrived patterned layer 4 is absorbed by patterned layer 4, and patterned layer 4 is just heated by this laser L.Because the power output of laser L is set to low power output as above, so becoming, the temperature of patterned layer 4 is no more than the melting of patterned layer 4 or the temperature of decomposition temperature.
The heat of patterned layer 4 conducts to the intermediate member 5 of adjacency.Because be mixed with thermal conductivity filler in intermediate member 5, so the heat of patterned layer 4 is easy to conduct to whole intermediate member 5.Thereby being heated to, intermediate member 5 becomes melt temperature melting.Intermediate member 5 one meltings, are just closely bonded in the patterned layer 4 of light transparent member 3, and are also closely bonded on base material 2.Now, because the power output of laser L has been carried out to above-mentioned setting, so patterned layer 4 can melting or decomposition.
Sometimes a part of laser L (the several % in the laser L having irradiated) can see through patterned layer 4.The a small amount of laser L that has seen through patterned layer 4 arrives intermediate member 5.Because be mixed with laser absorbent in this intermediate member 5, absorbed by intermediate member 5 so see through the laser L of patterned layer 4.So, intermediate member 5 also can be by this small amount of LASER HEATING, so can effectively utilize laser L.
As mentioned above, according to this joint method, as long as because laser L has the low power output of several watts of left and right, damage (burn or be out of shape) so can suppress base material 2 or light transparent member 3 because of heat, and, in the time that there are other parts or machine in the surrounding of base material 2, can also suppress the damage these parts or machine being caused by heat.Therefore, this joint method is of many uses.
Then,, after the irradiation of laser L finishes, intermediate member 5 is cooling, curing.Intermediate member 5 solidifies, so base material 2 and light transparent member 3 are engaged the joint product 1 that obtain.If observe this joint product 1 from the outside of light transparent member 3, the pattern of patterned layer 4 sees through light transparent member 3 and is presented on inside, thereby shows stereovision in pattern.Because this patterned layer 4 is not dissolved, so outward appearance is more attractive in appearance.
When the irradiation that utilizes laser L, base material 2 and light transparent member 3 are carried out when deposited, just accept cooling such thermal cycle again after heating.Now, because the difference of the linear expansion coefficient of base material 2 and light transparent member 3 etc. can produce stress sometimes on joint interface.To this, because intermediate member 5 is made up of binding agent or elastomer, so can relax the stress of joint interface.So, just can prevent the decline of bond strength or peel off.
In the joint product 1 of gained, thermal stress or mechanical force increase and on the joint interface of base material 2 and light transparent member 3, produce stress in use sometimes, and such stress also can be relaxed because of the existence of intermediate member 5.Therefore, even if use for a long time joint product 1 also can maintain bond strength.
As described above, the joint method related according to present embodiment, the non-permeability patterned layer 4 of laser is set so that pattern is presented on the outside in light transparent member 3, between light transparent member 3 and base material 2, be adjacent to patterned layer 4 intermediate member 5 is set, utilize laser L patterned layer 4 to be heated to become the set point of temperature that is no more than melting or decomposition temperature, because utilize the heat of patterned layer 4 to heat intermediate member 5 so that base material 2 and light transparent member 3 are engaged, so can obtain the joint product 1 that outward appearance is more attractive in appearance.
Because intermediate member 5 has the adhesiveness sticking in base material 2 and light transparent member 3, so before irradiating laser L, can make easily base material 2 and light transparent member 3 integrated to suppress location dislocation, thereby can obtain enough bond strengths, and can obtain outward appearance and better engage product 1.
Owing to making intermediate member 5 for heat-fusible materials, so can obtain enough adhesive strengths.
Owing to having mixed thermal conductivity filler in intermediate member 5, so the heat of patterned layer 4 is easy to conduct to whole intermediate member 5, make reliably intermediate member 5 meltings, engage and just can carry out reliably.
Owing to being mixed with laser absorbent in intermediate member 5, so can make intermediate member 5 absorb the laser not absorbed by patterned layer 4.So, just can effectively utilize laser L and heat intermediate member 5.
In addition, in the above-described embodiment, irradiate laser from light transparent member 3 one sides, but be not limited to this, can form base material 2 by the parts with laser-transmissible, and irradiate laser from base material 2 one sides.Now, intermediate member 5 becomes the parts with laser-transmissible.So,, because the laser having irradiated from base material 2 one sides arrives patterned layer 4 and patterned layer 4 is heated, so utilize as mentioned above the heat of patterned layer 4 to heat intermediate member 5, base material 2 and light transparent member 3 are engaged.
And, can form intermediate member 5 by core layer and the adhesion layer that is separately positioned on core layer two sides.
Intermediate member 5 can not can because of heat melting or the decomposition of patterned layer 4, be only softening.This point can realize by changing the power output of laser or the material of intermediate member 5 etc.Because by making intermediate member 5 softening, also can make intermediate member 5 closely be bonded in base material 2 and light transparent member 3, so can carry out reliably bonding.
Intermediate member 5 can be made up of adhesive tape.Now, by making intermediate member 5 softening and closely engage, can suppress bonding part to exist the situation of bubble, air-tightness and watertightness improve.Particularly, use the narrow adhesive tape of width, the successful that air-tightness and watertightness improve.
And, patterned layer 4 can be set on base material 2, at the arranged outside intermediate member 5 of patterned layer 4.Now, because the intermediate member 5 non-permeability parts that are laser, so in the time irradiating laser from light transparent member 3 one sides, laser sees through intermediate member 5 patterned layer 4 is heated, the heat of this patterned layer 4 conducts to intermediate member 5.
Joint method involved in the present invention, except box used for cosmetic, residential equipment use or electric equipment products are with package member, can also be applicable to manufacture the situation of various joint product.
[embodiment]
According to table 1, embodiments of the invention are described.
[table 1]
Light transparent member 3 is all same parts in all comparative examples and embodiment 1～4, is methacrylic resin (PMMA) sheet material, and thickness is that 2mm, laser transmittance are 93%.
Patterned layer 4 is all identical in all comparative examples and embodiment 1～4, uses the black (JUJO CHEMICAL CO., LTD. system: レ イ キ ユ ア GA4100) in UV screen printing ink to carry out serigraphy to form the pattern of thickness as 10 μ m.Laser transmittance is 4%.
Base material 2 and light transparent member 3 are overlapping in the scope of wide 25mm × dark 35mm.Intermediate member 5 is wide 25mm × dark 5mm, becomes the state being clipped by base material 2 and light transparent member 3, so that whole intermediate member 5 is all between base material 2 and light transparent member 3.
Laser irradiates with 0mm focal length, scans (scanning distance 25mm) along the width of base material 2 and light transparent member 3.
1, comparative example
Intermediate member 5 is acrylic compounds hot-melt adhesive, and thickness is 50 μ m.Acrylic compounds hot-melt adhesive for example, for example, is mixed by acrylate copolymer (, KURARAY CO., LTD. LA2250 processed), tackifier (SE-A-115 processed of Arakawa Chemical Industries, Ltd.).
Base material 2 is stainless steel (SUS304) sheet material, and thickness is 1mm.
Laser is semiconductor laser, and wavelength 940nm, power output 30W, sweep speed 6m/ divide.
Before irradiating laser, bond strength is low to moderate the degree that is difficult to tolerate actual use.Particularly, bond strength is if base material 2 is pulled open with light transparent member 3 with hand, is easy to the degree just separating.
The test method of bond strength is carried out in the following ways: on shear direction, edge applies pulling force (draw speed 5mm/ divides) with the direction that the scanning direction of laser intersects vertically to the base material 2 under engagement state and light transparent member 3.Before comparing routine Ear Mucosa Treated by He Ne Laser Irradiation, if the power when peeling off is converted into stress, below 0.5MPa.
If base material 2 and light transparent member 3 are immersed in water, water will be invaded between base material 2 and light transparent member 3.
After irradiating laser, identical with pre-irradiation, bond strength is low to moderate the degree that is difficult to tolerate actual use., in above-mentioned test method stress value below 0.5MPa.In addition, water can be invaded between base material 2 and light transparent member 3.Patterned layer 4 produces ink and decomposes the also phenomenon of albefaction.This is to strengthen caused phenomenon by the power output of laser.
2, embodiment 1
Intermediate member 5 is identical with comparative example with base material 2.
Laser is semiconductor laser, and wavelength 808nm, power output 2W, sweep speed 0.6m/ divide.
Before irradiating laser, bond strength is low to moderate the degree that is difficult to tolerate actual use, and in above-mentioned test method, stress value is below 0.5MPa.And water can be invaded between base material 2 and light transparent member 3.
After irradiating laser, bond strength reaches the actual level using of enough tolerances.Particularly, in above-mentioned test method stress value more than 1.2MPa.Bond strength more than 1.2MPa is to use hand that base material 2 and light transparent member 3 are pulled open and be also difficult for the degree peeled off.
And water is not invaded base material 2 and light transparent member 3.Patterned layer 4 does not change.
3, embodiment 2
Intermediate member 5 is acrylic compounds adhesive tape, and thickness is 100 μ m.This adhesive tape is Nitto Denko Corp's system, production code member No.5000NS.
The sheet material that base material 2 is Merlon, thickness is 2mm.Merlon is the ス テ ラ S300 In あ Ru of Mitsubishi Plastics Inc's system.
Laser is semiconductor laser, and wavelength 808nm, power output 3W, sweep speed 0.6m/ divide.
Before irradiating laser, bond strength can obtain guarantee to a certain extent, but water can be invaded between base material 2 and light transparent member 3.
After irradiating laser, bond strength reaches the actual level using of enough tolerances.Particularly, in above-mentioned test method stress value more than 1.0MPa.And water can not invaded between base material 2 and light transparent member 3.The residual vestige that irradiated laser in patterned layer 4, but outward appearance is more attractive in appearance compared with comparative example.
4, embodiment 3
Intermediate member 5 is in acrylic compounds hot-melt adhesive, to have mixed the parts that boron nitride (thermal conductivity filler) is made, and thickness is 50 μ m.Boron nitride is the product of ESK CERAMICS Co., Ltd. system, and average grain diameter is 2 μ m.The addition of boron nitride is 10 % by weight.
Base material 2 is identical with comparative example.
Laser is semiconductor laser, and wavelength 808nm, power output 3W, sweep speed 0.6m/ divide.
Before irradiating laser, bond strength is low to moderate the degree that is difficult to tolerate actual use, and in above-mentioned test method, stress value is below 0.5MPa.And water can be invaded between base material 2 and light transparent member 3.
After irradiating laser, bond strength reaches the actual level using of enough tolerances.Particularly, in above-mentioned test method stress value more than 2.4MPa.Bond strength more than 2.4MPa is to use hand that base material 2 and light transparent member 3 are pulled open, only otherwise apply the degree that very strong power just can not be peeled off.
Water can not invaded between base material 2 and light transparent member 3.Patterned layer 4 does not change.
5, embodiment 4
Intermediate member 5 for to have mixed the parts that near infrared ray absorption is made in acrylic compounds hot-melt adhesive, and thickness is 50 μ m.Near infrared ray absorption is the IR-13F of Showa Denko K. K's system.And the addition of near infrared ray absorption is 0.5 % by weight.
Base material 2 is identical with comparative example.
Laser is semiconductor laser, and wavelength 808nm, power output 3W, sweep speed 0.6m/ divide.
Before irradiating laser, bond strength is low to moderate the degree that is difficult to tolerate actual use, and in above-mentioned test method, stress value is below 0.5MPa.And water can be invaded between base material 2 and light transparent member 3.
After irradiating laser, bond strength reaches the actual level using of enough tolerances.Particularly, in above-mentioned test method stress value more than 2.4MPa.And water can not invaded between base material 2 and light transparent member 3.Patterned layer 4 does not change.
6, embodiment 5
Intermediate member 5 for having mixed the parts that near infrared ray absorption is made in phenylethylene elastomer hot-melt adhesive.Particularly, 0.5 part of 50 parts of SBS elastomer (TR-2601 processed of JSR Corp.), 50 parts of tackifier (the ヤ ス Ha ラ ケ ミ カ Le TO-115 processed of Co., Ltd.), infrared absorbent (the カ ヤ processed ソ mono-プ IGR-068 of Nippon Kayaku K. K) is dissolved in toluene, obtain solid constituent and be 40% solution, with the thickness of 100 μ m by this solution coat to the two sides of the PET film of thickness 25 μ m, make two sides and there is adhering two sides adhesion material.This material is intermediate member 5.In addition, the illuminate condition of laser is identical with embodiment 4 etc.
Before irradiating laser, bond strength is low to moderate the degree that is difficult to tolerate actual use, and in above-mentioned test method, stress value is below 0.5MPa.And water can be invaded between base material 2 and light transparent member 3.
After irradiating laser, bond strength reaches the actual level using of enough tolerances.And water can not invaded between base material 2 and light transparent member 3.Patterned layer 4 does not change.
7, embodiment 6
Intermediate member 5 contains and in phenylethylene elastomer hot-melt adhesive, has mixed the mixture that near infrared ray absorption forms.Particularly, 0.5 part, 50 parts, styrene-isoprene-phenylethene elastomer (5200P processed of JSR Corp.), 50 parts of tackifier (the ヤ ス Ha ラ ケ ミ カ Le P-115 processed of Co., Ltd.), infrared absorbent (the カ ヤ processed ソ mono-Block IGR-068 of Nippon Kayaku K. K) is dissolved in toluene, obtain solid constituent and be 40% solution, with the thickness of 100 μ m by this solution coat to the two sides of the PET film of thickness 25 μ m, make two sides and there is adhering two sides adhesion material.This material is intermediate member 5.In addition, the illuminate condition of laser is identical with embodiment 4 etc.
Before irradiating laser, bond strength is low to moderate the degree that is difficult to tolerate actual use, and in above-mentioned test method, stress value is below 0.5MPa.And water can be invaded between base material 2 and light transparent member 3.
After irradiating laser, bond strength reaches the actual level using of enough tolerances.And water can not invaded between base material 2 and light transparent member 3.Patterned layer 4 does not change.
-industrial applicability-
As described above, use involved in the present invention the joint method of laser for example can be used in manufacture box used for cosmetic, residential equipment with or electric equipment products package member.

Claims (7)

  1. With laser to thering is the first component of light transmission and the joint method that second component engages, it is characterized in that:
    In described first component and described second component, at least one parts is made up of the material with laser-transmissible;
    The non-permeability patterned layer of laser is set so that pattern is presented on the outside of this first component at least one parts in described first component and described second component;
    Between described first component and second component, be adjacent to described patterned layer and be provided for the laser joint intermediate member that described first component and described second component are engaged;
    Irradiate for this patterned layer being heated to become the laser that is no more than the melting of this patterned layer or the set point of temperature of decomposition temperature towards described patterned layer from described parts one side with laser-transmissible, utilize the heat of this patterned layer to heat described intermediate member, described first component and described second component are engaged.
  2. 2. joint method according to claim 1, is characterized in that:
    Described intermediate member has the adhesiveness sticking on described first component and described second component.
  3. 3. joint method according to claim 1 and 2, is characterized in that:
    Described intermediate member is by being made by the heat-fusible materials of the heat of described patterned layer institute melting.
  4. 4. joint method according to claim 3, is characterized in that:
    Described heat-fusible materials is thermoplastic elastomer (TPE).
  5. 5. joint method according to claim 3, is characterized in that:
    Described heat-fusible materials is acrylic compounds heat-fusible materials.
  6. 6. joint method according to claim 1, is characterized in that:
    In described intermediate member, there is thermal conductivity filler.
  7. 7. joint method according to claim 1, is characterized in that:
    Described intermediate member is configured to described patterned layer adjacent with side Ear Mucosa Treated by He Ne Laser Irradiation opposite direction and described patterned layer;
    In described intermediate member, be mixed with the laser absorbent of absorbing laser.
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