JP2507799Y2 - Product packaging bag - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a product packaging bag.

In particular, the present invention relates to a product packaging bag characterized in that the opening can be sealed in a three-dimensionally thick shape.

[Prior Art] It is widely practiced that products, particularly small products, are displayed and sold in a product packaging bag made of a plastic film.

Since these plastic film bags are not stiff and soft, the thickness of the packaging body is formed by the shape of the product, and the bag body portion may be deformed according to the shape of the product, and the appearance of the packaging body may be poor. is there.

In order to avoid such a defect, the bag itself is made to have a flexible shape, and a thick sheet is provided inside the product packaging bag as a product packaging bag to obtain a package having a constant shape regardless of the shape of the product. Was being done.

However, with this thick sheet, the waist of the bag part came out and the appearance of the package was improved a little, but the rectangular lid sheet extending from the opening edge near the opening was bonded to the other opening edge. Since it is attached with an agent, the shape of the package is still unfavorable because it is flat near the opening.

[Problems to be Solved by the Invention] An object of the present invention is to provide a product packaging bag having a feature that the opening of the packaging body can maintain a three-dimensional thickness. That is, it is an object of the present invention to provide a packaging body in which the shape of the packaging bag itself is maintained by this product packaging bag, such as a box made of cardboard.

[Means for Solving the Problem] In order to fix the opening of the package three-dimensionally, the inventors of the present invention installed two thick lid material sheets in close contact with a thin plastic film of the opening. Then, the present invention has been accomplished by contemplating that the two lid portions of the lid material are bent perpendicularly to the opening and the both lid portions are overlapped and sealed.

 That is, the aspect of the present invention includes the following items.

Paragraph 1 Two substantially rectangular thin plastic films are polymerized, and the polymerized side edges are fused to form a bag body. At the opening of the plastic film bag, a thick film having the same width as the opening is formed. Two sheets of lid material made of paper or plastic are installed in close contact with each other inside the opening, both lid material sheets have arched upper edges, and both left and right upper ends of the lid material sheets are An arch-shaped fold line is also provided below the connecting straight line in the lid material sheet, and the cat-shaped portion surrounded by the arch-shaped upper edge and the arch-shaped fold line serves as a lid portion, and both lid portions of the lid material sheet are attached. A merchandise packaging bag characterized in that it is folded substantially perpendicularly to the inside of the bag along a folding line so as to be overlapped with each other, and the openings are three-dimensionally sealed by the two lids.

Item 2. The product packaging bag according to Item 1, wherein an adhesive layer is provided on the upper surface of the thin bag body film which is folded together with the lid portions that are below the lid portions that are stacked on top of each other at the time of sealing or on the lower surface of the lid portion that is above .

Item 3. The product packaging bag according to Item 1 or 2, wherein the bag body is a header-equipped bag body.

The present invention will be described in more detail with reference to the drawings of the embodiment, but the present invention is not limited to this embodiment.

FIG. 1 is a front view of a bag body portion of a product packaging bag of a typical embodiment of the present invention, and FIG. 2 is a vertical sectional view thereof. However, in FIG. 2, the direction of the cross-sectional width is greatly enlarged to clarify the structure. The product packaging bag of this embodiment is formed by inserting the lid material sheet of FIG. 3 into the bag body.

The bag shown in FIGS. 1 and 2 has substantially the same basic structure as that of a commodity packaging bag with a header which is generally widely used, and has a rectangular thin plastic front film 1 and back film. 2 is polymerized and fused at the side edges 6 and 7 to form a bag body portion. In this embodiment, the front film 1
The back film 2 and the back film 2 are continuously connected to each other through a gusset fold 10 at the bottom with an integral material. Further, a header film 3 is integrally extended above the back film 2, and the header film 3 is folded back by wrapping a thick plastic header sheet 4.
At the lower edge of the header sheet 4, the front and back header films 3 and the three header sheets 4 are simultaneously fused and fixed by the fusion portion 5.

The plastic film used here can be used without particular limitation as long as it is made of a thermoplastic resin. For example, a film of polypropylene, polyethylene, nylon, polyester or the like can be used, and a resin laminating film or a laminating film with a metal film can also be used.

A pressure-sensitive adhesive 8 is applied to the outer side of the upper edge of the front film 1, and a release paper 9 is stuck on the pressure-sensitive adhesive 8.

The lid member 11 of the product packaging bag of this embodiment has a shape shown in the front view of FIG. 3 and is made of a thick sheet.

As the material of the lid member 11, a flexible sheet made of paper or plastic can be used.

As the plastic sheet, those having a certain degree of flexibility can be used without particular limitation, but for example, thermoplastic resins such as high-density polyethylene, polypropylene, polystyrene and the like and thermosetting resins such as phenol resin can also be used. Moreover, what added the inorganic filler to these resins can also be used.

When a plastic sheet is used, there is an advantage that the lid member 11 can be fused and fixed to the plastic bag body portion, and it is convenient to fix the lid material to the bag body portion. In addition, a lid made of paper has an advantage that it is elastic and easy to bend.

The lid members 11 and 11 ′ are composed of two sheets which are formed by extending arch-shaped upper edges 12 and 13 on the upper side of a rectangular sheet having substantially the same shape as the front film 1, and the two sheets are separated by a crease line 16. It is continuous. In this embodiment, the two lid material sheets have a structure of two continuous sheets. However, in the present invention, the two lid material sheets are fused separately from both sides even if they are separated separately. However, it is desirable that the both sides are fixed and the two are in the shape of a tube because the strength of the three-dimensional shape is increased.

In addition, one or both edges of the two lid members that are continuous through the crease line 16 have a narrow width, which is a strip-shaped strip sheet.
20 can be provided through the folds. By attaching this, if it is adhered at this glue margin, it has the advantage that the shape is fixed like the above-mentioned tubular lid material, and it has the effect of fixing the joint edge even if it is not used with an adhesive material. There is an advantage that the shape becomes strong.

In this embodiment, a sheet in which the lid material sheets on the front side and the back side are formed integrally with each other and is separated from each other is used, but in the present invention, the two lid material sheets are separated. It can be preferably used even if it is fixed to the bag body portion.

Then, symmetrically with respect to the line connecting the points A, B and C at the upper end corners of the sheet, the arch-shaped fold lines 14, 15 which are the same as the upper end are formed.
Is provided, and the cat-eye-shaped portion above the fold line of the lid material is the lid portion H.

This embodiment can be formed by inserting the lid members 11 and 11 'shown in FIG. 3 into the bag body portion shown in FIGS.

Bend the lid materials 11 and 11 'along the central bending line 16 to
The lid material sheet 11 is inserted into the bag body from the opening D shown in the drawing while being in close contact with the inside of the front film 1, and the lower edges 18 and 19 of the lid material are the front and back bottoms F of the bag gusset 10. , G to match. At this time, since the slit 17 is provided, the central fold E of the gusset fold 10 can be installed so as to straddle it.

When sealing the product packaging bag of this embodiment, the product is first stored in the bag body, and then the lid portion H is first folded from the fold line 14 of the front side sheet, and then the fold line 15 of the opposite back side sheet is moved upward. Raise the edge 12. At the time of this bending, the upper edge of the front film 1 having the adhesive layer 8 is also bent. Next, the fold line 15 of the back sheet 11 'is folded, and the upper edge 13 of the back sheet is folded along the fold line 14 which has already been folded. The lower surface of the bent upper edge 13 is fixed to the upper surface of the front film 1 by the adhesive layer 8 and sealed as shown in FIG. In this way, when the front film 1 is placed under the upper edge 13 of the facing lid material sheet, only the upper edge 13 appears on the upper surface of the opening and the appearance is good. Of course, in some cases, the upper edge 12 may be bent, then the upper edge 13 may be overlapped, and finally the upper edge of the front film 1 may be overlapped. in this case,
The adhesive 8 needs to be applied to the back of the front film 1.

In the case of sealing in this manner, the cat's-eye lid portions H of the lid material sheets on both sides are overlapped and fixed to the opening of the product packaging bag, and the opening is three-dimensionally fixed.

In this fixing, since the lid portion has an elasticity that is warped and inverted, even if the lid portion is not bonded with an adhesive, the opening portion does not open with a weak force.

However, it is preferable to fix the polymerized lid with an adhesive or the like in order to prevent the product from falling off.

Further, when the portions indicated by M and N at the upper and left portions of the portion corresponding to the adhesive layer 8 of the front film 1 in FIG. 1 are separated from the side edges of the bag body portion, the upper edge of the front film 1 is 2 It is desirable that when it is polymerized between the lid portions of the sheet, the adhesive layer 8 is completely hidden under the upper edge 13 of the back side lid material sheet 11 'and is not exposed to the surface.

The shape of the packaging body using the product packaging bag of the present invention becomes three-dimensional, and many packaging bodies are unified into almost the same shape. For example, it is possible to three-dimensionally wrap the product in such a manner that the product will not change much in shape even if the product is stored in an empty state.

Instead of the lid material 11 of this embodiment, a lid material to be installed only in the opening portion as shown in FIG. 8 can be used. In this case, the bag main body has a thickness depending on the stored product, and the opening has a thickness due to the lid member, so that a three-dimensional opening packaging can be formed.

In the case of such a short cover material, the position of the cover material may move up and down, so the width of the cover material should be exactly the same as the width of the bag body, or the opening should be made by fusion or adhesive. It is desirable to fix it in the proper position on the part.

Furthermore, the lid member of FIG. 9 can be used for the product packaging bag of the present invention. This is an intermediate shape between FIG. 3 and FIG. 8, and the product looks good when a sheet with a long lid material is installed on the front side in particular. Such a long lid material sheet,
When applied to a bag reinforced with a thick sheet on one side of the thin film constituting the bag, after all, a thick reinforcing sheet exists on both front and back sides, and the long two-sheet lid material sheet shown in FIG. 3 was used. The same effect can be exhibited.

Also in the case of these lid members, it is possible to make them into a tube shape similarly to the lid member of FIG. 3 or to extend a glue margin strip at the end.

In addition, when one or both of the lid material sheets are short and the thick sheet of the core material is inserted and combined in the product packaging bag that is joined to the bag body from the beginning, the header material sheet is used. It can be extended to a sheet to form an integral thick sheet. In this case, when the bag is manufactured without providing the separation seal that is usually used between the header portion and the bag body portion, and the thick core material sheet is placed on the front side, the appearance of the packaging body becomes very good. In this case, it is more desirable to make the core sheet transparent so that the products inside can be seen well.

As a method of fixing the sealing part of the present invention, as shown in FIG.
A method of stacking the upper edge of the front film 1 on the top can be used. In this case, instead of the bag shown in FIG. 2, a bag having a sectional structure as shown in FIG. 11 can be used.

The product packaging bags of these examples can be hung and displayed by the hanging holes in the header portion.

The embodiment of the present invention is a product packaging bag with a header,
Although the bag having the opening at the top has been described, the present invention can be applied without limitation to a product packaging bag with a header having an opening at the bottom and a product packaging bag having no header.

[Effect of the Invention] The product packaging bag of the present invention has the advantage that the packaging body can look good because the packaging body, especially the shape of the opening, can have a three-dimensional shape.

Also, the present invention can be applied to various product packaging bags such as a product packaging bag with a header and a reinforcing sheet,
Since it gives a high-class feeling to the packaging of various plastic bags, it has an advantage of promoting sales of products.

[Brief description of drawings]

FIG. 1 is a front view of a bag body portion of a product packaging bag according to an embodiment of the present invention, FIG. 2 is a longitudinal sectional view thereof, and FIG. 3 is a plan view of a lid member to be inserted into the bag body portion. FIG. 4 is a front view of a package using the product packaging bag of the same embodiment, FIG. 5 is its side view, FIG. 6 is its top view, and FIG. 7 is the present invention. FIG. 8 is a partial cross-sectional view showing a closed state of the opening of one embodiment, FIGS. 8 and 9 are plan views showing other shapes of the lid member of this embodiment, and FIG. 10 is a view of the present invention. FIG. 11 is a partial cross-sectional view showing a closed state of the opening of another embodiment, and FIG. 11 is a cross-sectional view of the product packaging bag. The reference numerals in the drawing are: 1; front film, 2; back film, 3; header film, 4; header sheet, 5; header lower edge fused portion, 6, 7; side edge fused portion, 8; pressure sensitive adhesive Agent layer, 9; Release paper, 1
0; Gazette fold, 11, 11 '; Lid sheet, 12, 13; Arched upper edge, 14, 15; Arched fold line, 16; Fold line, 1
7; Thrits, 18, 19; Lower edge, 20; Strips, A, B, C; Upper corner of lid material sheet, D; Opening portion, H; Lid portion, M, N; Bag side film side edge release It is a department.

Claims (3)

(57) [Scope of utility model registration request] 1. An opening of a plastic film-made bag in which two substantially rectangular thin plastic films are superposed and the superposed side edges are fusion-bonded to form a bag body portion, the width being the same as the width of the opening. Thick paper or plastic lid sheet 2
Sheets are closely attached to the inside of the opening, the lid material sheets have arch-shaped upper edges, and the arch-shaped crease line is also formed under the straight line connecting the left and right upper ends of the lid material sheets. Is provided on the lid material sheet, and the cat-shaped portion surrounded by the arch-shaped upper edge and the arch-shaped fold line is used as a lid portion, and both lid portions are opposed to each other inside the bag along the folding line of the lid material sheet. As described above, the product packaging bag is characterized in that it is bent substantially vertically and polymerized, and the opening can be three-dimensionally sealed by the two lids. 2. An adhesive layer is provided on the upper surface of the thin bag body film which is folded together with the lid portions below both lid portions which are vertically stacked upon sealing and the lower surface of the lid portion which is above. Product packaging bag. 3. The product packaging bag according to claim 1, wherein the bag body portion is a header body bag portion.