HUT71826A - Disposable absorbing diaper with improved tightness - Google Patents

Description

FIELD OF THE INVENTION The present invention relates to an improved liquid-tight disposable diaper, for children or incontinent persons, comprising an absorbent pad between a fluid impermeable outer support layer and a fluid impermeable inner wrap.

Such health products are known, for example, from GB-A-2,161,059 (Kimberly-Clark). According to this document, two liquid-tight side wings extend over the absorbent pad, which face each other such that their distal, elasticized edges are positioned side by side. The two fluid-tight side wings are formed by double folding of the fluid-impermeable support layer and the fluid-impermeable inner wrapper layer covering the absorbent pad on this support layer. At the respective ends of the two transverse edges of the diaper pants, the wings are fastened so that they are always turned inward, facing each other without being folded outward, for example, when the health care product is applied to the wearer. These side wings improve the fluid tightness of the health product in the lateral direction, namely between the thighs. In contrast, there is still a risk of fluid leakage in the two belt ranges.

Further, it is known, for example, from GB-A-2,159,693 (Kimberly-Clark) to solve the problem of: Such a health product uses belt pockets extending from the transverse edge of the health product to the opposite wind, and the distal end of this wing may be made flexible, if desired. These pockets improve the fluid tightness only in the belt areas.

It is also known to try to improve the lateral closure of the same health care product, namely the area between the thighs, and simultaneously the fluid closure in the two belt regions. For example, according to US-A-4,662,877 (Williams), the inner wrapping layer of such a health product is covered with an additional sheet having a rectangular opening or cut-out above the absorbent pad having two longitudinal edges elastic. It should be noted that, according to this document, the supplemental sheet is affixed to the fluid-permeable inner wrapping layer along two opposite transverse edges corresponding to the transverse edges of the health product and to the longitudinal edges at opposite edges of the elastic members of the health product. the latter elastic members being located outside two opposed longitudinal edges of the absorbent pad. Such an additional sheet having a rectangular opening made elastic at the longitudinal edges is not satisfactory in all respects, in particular because of the width of this opening (which, for a length of about 30 cm, is approx. 12 cm). In addition, due to the width of the opening of the additional sheet, this sheet itself must be wider than the absorbent pad so that the width of the two side wings is sufficient, which in turn involves the substantial amount of material required to form this additional sheet. On the other hand, for disposable absorbent products, such as diaper pants, it is essential to minimize the amount of material used and thus the cost of manufacturing the product.

Otherwise, a solution has been proposed in a similar manner, for example, in EP-A-0376022 (The Procter & Gamble), to provide an absorbent diaper pant with two liquid-tight side wings and two pockets in the belt area at the same time. However, according to this document, the pockets in the belt area are made with two added transverse straps, which makes the manufacture of diaper trousers more difficult, namely when they are manufactured continuously in the longitudinal direction.

It is an object of the present invention to provide a disposable absorbent nappy which is both simple in construction and fabric and has a sealing hem that extends along the entire circumference of the absorbent pad.

The object of the present invention has been achieved by providing an improved liquid-tight disposable diaper trouser which has a

- 5 absorbent pads of limited shape and attached to the support layer, an inner covering layer covering the absorbent cushion, adhesive fastenings around the waist, elastic members secured to the support layer outside the longitudinal edges of the absorbent cushion, and two layers of absorbent padding it comprises a lateral moisture barrier wing extending above the cushion, the longitudinal edges of the latter being connected to the wrapping layer along longitudinal lines extending just above or slightly from the longitudinal edges of the absorbent cushion, and the lateral moisture barrier wings extending which is characterized in that the side-wings are connected to each other at their distal ends, at least from the transverse edges of the diaper to the absorbent p They form a liquid barrier around the entire circumference of the absorbent pad.

Preferably, the diaper pants of the present invention have a side-waist flap formed from casings fastened along the transverse edges of the diaper pants and flattened along a longitudinal line forming a proximal end of the side-waist flaps, and at least one elastic member is embedded in the sheath. attached to the close ends of the wings.

Further preferred are diaper pants according to the invention if:

• · · side moisture barrier wings are single,

4 ·· 4 4 • 4

The wrapper layer is formed by a strip covering the entire length of the diaper pants and a central portion of the width of the diaper panties, the transverse edges corresponding to the transverse edges of the diaper pants and the two longitudinal edges of the longitudinal middle edges a longitudinal notch, the two edges of which are resiliently resiliently formed by the distal ends of the two lateral moisture barrier flaps;

- the lateral moisture barrier flaps are formed of a cladding layer having a longitudinal incision in the central portion along its length, the two edges being elastic and forming the distal ends of the two lateral barrier flaps, and a moisture-wicking cushion between the cladding layer and a strip of equal width is inserted, along the entire length of the diaper pants, the strip piece being secured to the support layer and the wrapper layer and along two transverse edges of the diaper pants, and the two transverse longitudinal wings of the closure layer along;

the central longitudinal incision is filled with two transverse incisions delimiting a channel which folds back one envelope

- 7 ·· ·· · · · · · · · • "• · · · · · · · • · ······ ····· * form, in which stretched flexible elements are provided;

the elastic member being fastened at the two end ends corresponding to the two transverse ends of the diaper when tucked in the jacket;

a second longitudinal elastic member being tensioned attached to the lateral moisture barrier flaps along longitudinal lines forming proximal ends thereof;

- the longitudinal incision is formed by a notch defining an elongated opening which is less than half the width of the absorbent pad;

- two double folds along the entire length of the two lateral moisture barrier flaps or cladding layer, which are located to the right or left of the longitudinal incision into which the lateral moisture barrier flaps are secured by elastic elongation at their distal ends.

In the following, the diaper according to the invention will be described in more detail with reference to the accompanying drawing, in which

Figure 1 is a perspective view of the inner surface of a diaper pant with partially removed portions, according to a first embodiment of the present invention; the

Figure 2 is an enlarged sectional view taken along line II-II in Figure 1; the

Figure 3 is an enlarged sectional view taken along line III-III in Figure 1; a • * · · «♦ ··· ······· · · · · · · · · · · · · · · · · · · · · · · · ·

Figure 4 is a perspective view of the inner surface of a diaper pant with partially removed portions, in accordance with another embodiment of the present invention; the

Figure 5 is an enlarged sectional view taken along the line V-V in Figure 4; the

Fig. 6 is a perspective view of the inner surface of a diaper pant with partially removed portions according to a further embodiment of the invention; the

Figure 7 is an enlarged sectional view taken along line VII-VII in Figure 6; the

Figure 8 is a perspective view of the inner surface of a diaper pant with partially removed portions according to a fourth embodiment of the invention; the

Figure 9 is an enlarged sectional view taken along line IX-IX in Figure 8; the

Figure 10 is a perspective view of the inner surface of diapers with partially removed portions according to a fifth embodiment of the invention; the

Figure 11 is an enlarged sectional view taken along line XI-XI in Figure 10.

1-3. The diapers illustrated in Figures 1 to 4, in a manner known per se, comprise a liquid impervious support layer 1, an absorbent pad 2 formed, for example, from a cellulose fluff, possibly a super absorbent polymer material, and finally a liquid impermeable wrapping layer 3. is made of veil-like textile. The support layer 1 and the cover layer 3 and the wrapping layer 3 are of the same size and shape of an hourglass, i.e. bordered with a rectangular cutout having crescent-shaped cutouts 4 on the two sides, the latter delimiting a narrower thigh 5 between two wider ends 6 and 7. between.

The absorbent pad 2 placed between the support layer 1 and the wrapping layer 3 is also an hourglass, but its dimensions are smaller than the dimensions of the support layer 1 and the wrapping layer 3, the latter being held together with one another, for example by gluing.

Longitudinal elastic members 8 formed of a plurality of elastic strands or an elastic narrow web are fastened to the support layer 1 at least between the thighs 5, between the deepest parts of the crescent cutouts 4 of the support layer 1 and the corresponding deepest parts of the absorbent pads.

In addition, adhesive fasteners 9 are attached to the edges at the end portion 6 of the diaper pants.

Two side dampers 10 are attached to the wrapping layer 3, above the absorbent pad 2, along the entire length of the diaper pants.

The diaper pants designed as described above are of a conventional construction and therefore, no attachment of individual structural elements, such as gluing, is indicated to avoid overcrowding the drawing.

They are formed by a casing 11 made of a permeable material, for example preferably a moisture-repellent or liquid-impermeable nonwoven material, which consists of a tape folded back to itself along a longitudinal line 12 and sealed or welded. The cover 11 is attached to the wrapping layer 3 along a longitudinal line 13 formed by gluing or welding which extends along the entire length of the diaper pant, slightly offset from the edges of the absorbent pad 2 between the thighs 5 (see Figure 2).

The flaps 11 so attached to the cladding layer 3 are flattened on the cladding layer 3 so as to extend inwardly from the edges defined by the longitudinal line 13, substantially to the middle of the width of the absorbent pad 2, such that the distal ends 14 of the moisture barrier wings are in contact or very close to each other.

Inside the casings 11 of each side moisture barrier flap 10, at the distal end 14 of the side barrier flap 10, a longitudinal first elastic member 15 is disposed and a second longitudinal elastic member 16 is disposed within the casing 11 at an extended position. . It should be noted that the two longitudinal elastic members 15 and 16 are complete on the lateral moisture barrier flap 10.

it extends along its length, i.e. along the entire length of the diaper pant, and is attached to the sole 11 only longitudinally at its two ends so that it can move freely between the two ends. Incidentally, the casings 11 of the side moisture barrier flaps 10 are secured to the casing layer 3 in a flattened condition in the region of the two transverse edges of the diaper pants along the glue lines 17 shown in FIG.

Finally, the two opposite side moisture barrier flaps 10 are joined by their distal ends 14, from the two transverse edges of the diaper pants to the two transverse edges of the absorbent pad 2, respectively, by means of fastening regions 18, e.g. are shown in Figures.

When the diaper pants thus formed are worn and take on a curved trough shape, the elastic members 15 and 16 lift the side moisture barrier flaps 10 from the absorbent pad 2, so that the distal ends 14 of the two side barrier flaps 10 are spaced apart the degree of deflection increases from the two transverse edges of the diaper pants towards the center of the thigh portion as indicated by the dotted line in FIG. The two opposing lateral moisture barrier flaps 10 thus form two longitudinal fluid barrier barriers and, being secured to the cladding layer 3 at the end portions 6 and 7, form a pocket whose depth depends on the length of the anchoring region 18.

• · · · · · · · ·

In the embodiment of Figures 4 and 5, the side moisture barrier flaps 10 are formed by a single piece of tape 19 mounted on the wrap layer 3 along the entire length of the diaper pants and substantially the width of the portion 5 of the absorbent pad 2 between the thighs. The strip 19 is made of an air-permeable and preferably moisture-impermeable or impermeable material which is glued to the wrapping layer 3 along two longitudinal lines 13 and also transverse to two glue lines 17, 1-3. 4 to 7.

A longitudinal notch 20 is provided in the central portion of the band piece 19, the two edges of which are provided with two longitudinal elastic members 15 which are tensioned to the respective edges of the band piece 19. In this way, the distal ends of the two lateral moisture barrier flaps 10 are obtained, the proximal ends of which are defined by longitudinal lines 13 of adhesive.

In the two end portions 6 and 7 of the diaper pants, the uncut portions of the band piece 19 form pockets at the waistband, the depth of which depends on the length of the band piece 19 not cut in the end portions 6 and 7.

Also in this embodiment, when the wearer wears diaper pants and wears a curved trough shape, the elastic members 15 raise the side moisture barrier flaps 10 so that the distal ends 14 of these side barrier flaps 10 between the thighs · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · as indicated by dashed lines in Figure 5.

6 and 7, the longitudinal notch 20 of the ribbon piece 19 shown in Figures 4 and 5 is extended at both ends in the region of the intersection of the thighs 5 to the end portions 6 and 7, with a transverse notch 21 with its notch, it defines two channels 22 which can be folded outward, as shown in Fig. 7, and fixed in a bent state, for example by gluing along a line 23 to form a narrow casing and in which the casing is longitudinally stretched a resilient member 15 secured at the distal end 14, which is therefore preferably spaced apart by the folds in a manner similar to that of the embodiment shown in Figures 4 and 5. Thus, a notch 24 is formed between the distal ends 14 of the two lateral moisture barrier flaps 10, which is wider than the longitudinal notch 20 of FIGS. 4 and 5.

When the diaper pants are worn by the wearer and take up the curved trough shape, the elastic members 15 raise the side moisture barrier flaps 10 and, in this case too, remove the distal ends 14 of the side barrier flaps 10.

In the embodiment of Figures 8 and 9, a diaper having the same general structure as the previous examples (1 support layer, 2 absorbent pad, 3 cover layer, hourglass) is shown again.

- 14 (1), 2 absorbent pads and 3 wraps (8 elastic members between the thighs) in the shape of a support layer. This diaper pants also has two side moisture barrier wings 10, which, however, are made of the same material as the wrapper layer 3, which has a longitudinal notch 25 at the middle of its length. Two elastic members 26 are secured in tension to the outer surface of the two edges of the incision 25 extending to the two transverse ends of the diaper. In addition, a liquid-permeable, for example, non-woven webbing strip 27 is disposed over the entire length of the diaper pants centrally between the absorbent pad 2 and the wrapping layer 3, which is at least as wide as the absorbent pad 2 across the thighs. This strip 27 is attached to the support layer at two transverse edges of the diaper pants. Incidentally, the wrapping layer 3 is secured to this strip 27 at both transverse edges of the diaper pants and along two longitudinal lines 28, which may be in the form of, for example, glue lines and slightly inclined between the thighs 5 with the side edges of the absorbent pad. . These fixing lines 28 define the proximal ends of the two lateral moisture barrier flaps 10, the distal ends 29 of which are provided with elastic members 26 and are defined by a notch 25.

10 and 11, the embodiment shown in FIGS.

9 and 9 are different from the embodiment illustrated in FIGS

99 9 9 99 9 99 that the longitudinal notch 25 formed in the cladding layer 3 defines the distal ends 29 of the two lateral moisture barrier flaps 10 in this case, it forms a notch that defines an elongated, preferably rectangular, opening which is much narrower than the width of the absorbent pad 2, preferably less than half the width of the absorbent pad 2 between the thighs 5. In addition, in this embodiment, the wrapping layer 3 is provided with two Z-shaped double folds 30 along its entire length, which are folded downward (towards the absorbent pad 2) and located to the right and left of the incision 25 and the two lateral moisture sealing flaps 29. the elastic member 26 extending along its distal ends is tensioned in the upper or lower folds of these double folds 30 and the double folds 30 are bonded or otherwise secured so that the cladding layer 3 is secured or stiffened there, and thus facilitate cutting through the material of the incision 25, which in practice is done retrospectively.

It is understood that a shape other than Z-shape can be used for the double fold 30. For example, the double fold 30 may be S-shaped, and the elastic members 26 may be secured to the upper or lower fold S as before.

On the other hand, the material cut out by incision 25 can, if desired, be glued either to the strip 27 or directly to the 2 absorbent pairs • «···«

• · 4 • * · «• · ·

B «« «4 * ·· ·· • 9« · »·« · *, and this can be used to form 27 strips.

Finally, in this embodiment, a strip 27 of fluid permeable and slightly wider than the thighs 5 portion of the absorbent pad 2 is attached to the wrapper layer 3 along two longitudinal gluing or welding lines 28 which extend slightly along the edges 5 of the edges of the absorbent pad 2. which extend the transverse dimension, i.e. the width or height of the lateral moisture barrier flaps 10, the proximal ends of which are bounded by lines 28.

It is to be understood that the embodiments described and described above are illustrative only and are not intended to be limited thereto and that many modifications and variations are possible.

1-3. In the embodiment of Figs. 6 to 9, the two side moisture barrier flaps 10 may, instead of being in the form of tubular casings 11, be formed of flat strips whose distal ends 14 may otherwise slightly overlap, which would simplify the fastening of the distal ends 14. 7, for example, by simply gluing or welding them together.

6 and 7, wherein the wider notch 24 is formed between the two lateral moisture barrier flaps 10, it is also possible in the embodiment of FIGS. 8 and 9, i.e. where side moisture barrier wings are made of the material of the 3 cladding layers •.

The double fold 30 of the wrapping layer 3 according to Figs. 10 and 11 may also be realized in the embodiment of Figs. 8 and 9, and similar double folds may be provided in the strip 19 in Figs. 4, 5 and 6, 7. 1, for fastening the longitudinal elastic members.

In a further embodiment, the two lateral moisture barrier flaps 10 are formed of two parallel longitudinal strips, are transversely displaced and disposed above the absorbent pad 2 and the wrapping layer 3, and whose longitudinal inner edges of the lateral moisture barrier flaps 10 are the longitudinal axis 14 of the diaper pants, formed with a shaped profile in relation to the longitudinal axis of the diaper, forms a symmetrical sinus and thus forms a longitudinally extending aperture in the center, the ends of which overlap each other and secured to each Thus, the central opening in question is formed in such a way that no cuts are made in the strips.

It is to be noted at this point that in all embodiments shown and described, the side moisture barrier flaps 10 are preferably made of air-permeable but preferably moisture-impermeable or liquid-impermeable material, such as a nonwoven moisture-impervious or moisture-barrier insulating coating. t · · · · · ·········································· ·

provided material. In this way, one liquids not for her viable we get a dam, which the 2 hygroscopic pillow complete perimeter stretching along, and so effectively may

to prevent urine or feces from being trapped around the user's thighs, that is, between the thighs 5, and to his waist, i.e., the end portions 6 and 7.

Finally, in all embodiments shown and described, the diaper pants and its absorbent pad 2 are in the form of an hourglass, but the invention may also be embodied in the form of diapers having, for example, a rectangular pad.

In this connection, it should be noted that, if it is of interest in the description, the lateral wings 10, the width of the absorbent pad 2 or the longitudinal edges of the absorbent pad 2 are always referred to as the width or edges of the thighs 5.

It is to be noted, inter alia, that in the description, each side of the diaper pants is referred to as the outer side which faces outward when the diaper is worn by the wearer. By contrast, the term "inward" or "inner" is used to indicate that each element is facing the wearer or wearer when using diapers.

First

Disposable Diaper with Enhanced Liquid Closure

Claims (9)

Patent claims comprising trousers having a rectangular-shaped support layer, a rectangular-shaped, moisture-wicking cushion 1, an inner wrapping layer covering an absorbent cushion, an elastic-waisted, elastic-wound closure at the waist it comprises two lateral moisture barrier flaps located above the wrapping layer and extending above the absorbent pad, the longitudinal edges of the latter being joined to the wrapping layer along longitudinal lines which extend over or slightly apart from the longitudinal edges of the absorbent pad. and the distal ends thereof being located close to each other, characterized in that the lateral moisture barrier wings (10) are connected to each other at their distal ends. at the ends of the diaper pants (14, 19), they form a fluid barrier which extends from the transverse edges of the diaper pants to at least the corresponding transverse edges of the absorbent pad (2) and thus extends along the entire circumference of the absorbent pad (2). Diaper pants according to claim 1, characterized in that the side moisture barrier flap (10) is located along the transverse edges of the diaper pants and is close to the side moisture barrier flaps (9). »···· · (·· · 4 ·) are formed of flaps (11) attached to the flaps (11) flattened in a flattened state, and at least one elastic member (15) inserted into the flaps (11) and attached to the proximal ends of the moisture barrier wings (10). Diaper pants according to claim 1, characterized in that the side moisture barrier wings (10) are formed by a single strip (19) covering the wrapping layer (3) along the entire length of the diaper pants and in the middle of the width of the diaper panties. ) are secured along transverse edges of the diaper pants and two longitudinal lines (13) forming proximate ends of the side moisture barrier flaps (10), provided with a central longitudinal incision (20) at a central portion of the length of the webbing (19). the two edges being elastic by means of resilient members (15) forming the distal ends (14) of the two lateral moisture barrier flaps (10). Diaper trousers according to claim 1, characterized in that the side moisture barrier wings (10) are formed of a wrapping layer (3) having a longitudinal cut (25) in its central part which is elastic at its two edges and formed at the distal ends (29) of two side moisture barrier flaps (10) and one between the wrapping layer (3) * 9 9 · * ···· ······················································ a strip (27) of width equal to the width of the absorbent pad (2) is inserted, attached to the support layer (1) and the wrapping layer (3) and along the two transverse edges of the diaper, along the entire length of the diaper. reinforced along the longitudinal line (28) of two opposed longitudinal ends of the two lateral moisture barrier flaps (10). Diaper pants according to claim 3 or 4, characterized in that the central longitudinal incision (20, 25) is filled with two transverse incisions (21) defining a channel (22) which folds back to form one jacket, comprising tensioned elastic members (15). Diaper pants according to claim 2, characterized in that the elastic member (15) is fastened at the two ends at the transverse ends of the diaper pants when tensioned. 7. Diaper pants according to any one of claims 1 to 3, characterized in that a second longitudinal elastic member (16) is fastened in the tensioned position to the lateral moisture barrier flaps (10) along the longitudinal lines (13, 28) forming the proximal ends of the latter. 8th with Diaper pants according to claim 3 or 4, characterized in that the longitudinal incision (20, 25) is in the form of an elongated cut which is less than half the width of the absorbent pad (2). A diaper according to any one of claims 3, 4 or 8, characterized in that the double piece (19) or the wrapping layer (19) forming the two side-wings (10) is provided with two double folds (30) along its entire length, located on the right and left sides of the longitudinal incision (20, 25), in which longitudinal elastic members (15, 26) are elasticly bonded to the distal ends (14, 29) of the lateral barrier flaps (10).