JP2000140002A - Disposable diaper with better touch on skin - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent steaming of skin at mounted parts as caused by moisture due to perspiration from a portion between solid gathers during the wearing of a disposable diaper and that from excrement absorbed in an absorbing body. SOLUTION: Leg gathers 5a and 5b are arranged by joining each one side rim part of side sheets 10a and 10b separately on a liquid impermeable back sheet extended to both outsides of an absorbing body in a long-sized body where the absorbing body 3 is disposed between a liquid permeable top sheet 2 and the liquid impermeable back sheet 1 and the side sheets further extended inward are put together by seal lines 12a and 12b arranged in the longitudinal direction thereof to form the sheet inward from the seal lines into solid gathers 7a and 7b. In a disposable diaper thus arranged, at least the solid gathers are made of a hydrophilic material.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disposable diaper, and more particularly to a three-dimensional gather having a good feel when worn and an excellent wearing feeling.

[0002]

2. Description of the Related Art A disposable diaper basically comprises an absorbent body (3) between a liquid-impermeable back sheet (1) and a liquid-permeable top sheet (2), as shown in FIGS. Intervene,
This is a main body structure in which a central portion in a longitudinal direction is narrowed in a planar shape. And, on both sides of the outer surface of the liquid-impervious back sheet (1) which becomes the back side when worn, one of mechanical fasteners such as fastener tapes (4a) to (4d) using an adhesive or Velcro fasteners. The fastening tape on which the engaging member is formed is extended, and three-dimensional gathers (7a) and (7b) are erected on both sides in the longitudinal direction of the long main body.

The three-dimensional gathers (7a) and (7b) extend inward from side sheets (10a) and (10b) having one side edge fixed to both side edges of the inner surface of the back sheet (1).
At the constricted portion at the center in the longitudinal direction of the absorber (3), it is joined to the top sheet (2) by means such as heat sealing at a position outside the side edge of the absorber, thereby further extending the inner side sheet portion and the tip. It is formed by a three-dimensional gather elastic member (11) provided on the edge. The seal lines (12a) (12b), which are junctions between the top sheet (2) and the side sheets (10a) (10b), are provided linearly in the longitudinal direction, and furthermore, both ends in the longitudinal direction of the leading edge of the three-dimensional gather ( a1) to (a4) are joined to the top sheet (2).

[0004] In addition, a leg gather that is long in the longitudinal direction for forming leg gathers (5a) (5b) is formed at a fixed portion of the central portion of the back sheet (1) with the side sheets (10a) (10b). The fastening tapes (4a) to (4a) are provided on the outer surface of the liquid-impermeable backsheet (1) which is on the abdomen side when the elastic member (6) is sandwiched and further worn.
The other engaging sheet of a polypropylene sheet or a mechanical fastener is fixed as a frontal tape (not shown) to be engaged in (4d).

[0005]

The three-dimensional gathers of such disposable diapers are provided to prevent lateral leakage of excrement while being worn, and are usually made of a hydrophobic material which does not wet with liquid. I have. For this reason, there is a problem that the skin of the wearing part is stuffy due to moisture from sweating from the skin at the portion sandwiched by the three-dimensional gathers being worn and moisture from excrement absorbed by the absorber. In particular, when the three-dimensional gathers (7 ') are inclined outward as shown in FIG. 3, urine leaking laterally from the absorber flows over the surfaces of the three-dimensional gathers (7') and immediately leaks to the outside of the diaper. I got out. Further, there is also a problem that when the urine remains on the surface of the three-dimensional gather (7 ') that has fallen, that is, when there is residual urine, the skin is wet forever.

[0006]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems and has developed a disposable diaper which does not become stuffy when worn and has no residual urine.

That is, one aspect of the present invention is a long body having an absorber disposed between a liquid-permeable top sheet and a liquid-impermeable backsheet, and a liquid-impermeable structure extending to both outer sides of the absorber. One side edge of the side sheet is joined to the backsheet, leg gathers are provided, and the side sheet extended further inward is joined by a seal line provided in the longitudinal direction, and the side sheet inside the seal line is three-dimensional. In a disposable diaper formed in a gather, the disposable diaper has a good touch, characterized in that at least the three-dimensional gather is made of a hydrophilic material, and in this case, a side material is made of a hydrophilic material, or a liquid-permeable top sheet is used. A seal line to which the side sheets are joined is provided inside the both sides of the absorber, or a side line is attached to the liquid-impervious back sheet extended to both outsides of the absorber. When the are joined the door and provided with a seal line, it is effective to or bonded to both side edges of the liquid-pervious topsheet unmoving liquid permeable backsheet.

Another object of the present invention is to provide a long body in which an absorber is arranged between a liquid-permeable top sheet and a liquid-impermeable back sheet, on both sides in the longitudinal direction of the liquid-permeable top sheet. In a disposable diaper having leg gathers in the longitudinal direction of both side edges of the liquid-impermeable backsheet having three-dimensional gathers standing along and extending to both outer sides of the absorbent body, both sides of the liquid-impermeable backsheet The hydrophobic side sheet having leg gathers formed by joining one side edge to each edge is extended inward and joined with a seal line along the longitudinal direction, and a three-dimensional gather made of a hydrophilic material is formed from the seal line. This is a disposable diaper that has a good touch and is characterized by being erected.In this case as well, a liquid-impervious backsheet is provided in which the sealing line is provided inside the both sides of the absorber or extended to both outsides of the absorber. If the seal line is provided in, it is effective for joining the both side edges of the liquid-pervious topsheet unmoving liquid permeable backsheet.

The above-mentioned hydrophobic materials include woven fabrics, non-woven fabrics, films and the like of polyethylene, polypropylene, PET and the like. As the hydrophilic materials, the above-mentioned materials are subjected to a hydrophilic treatment, and the fiber cross section of the above-mentioned materials is hollowed or deformed. Or a woven fabric such as rayon or pulp, a nonwoven fabric, a film and the like.

[0010]

Embodiments of the present invention will be described below.

Example 1 In a disposable diaper having the shape shown in FIG. 1, the entire side sheets (10a) and (10b) were made of a nonwoven fabric made of polyethylene subjected to a hydrophilic treatment. According to such a diaper, three-dimensional gathers (7
a) The part (7b) is also hydrophilic, so that sweat and vapor are absorbed, so that the skin covered with the diaper does not get stuffy.
Further, since the urine that leaks out and flows through the three-dimensional gather portion penetrates into the three-dimensional gather portion, it does not leak out from the diaper to the outside, and the residual urine of the three-dimensional gather portion can be prevented. In other words, even when the three-dimensional gathers fall outward as shown in FIG.
The water absorption works effectively not only in the absorbent part but also in the three-dimensional gathers and the side sheet part which fall down, so that urine can be absorbed in a wider area. In FIG. 1, the seal line (1
Although 2a) and (12b) are formed outside the both sides of the absorber (3), they may be formed inside the both sides of the absorber (3), that is, in the upper surface area of the absorber. Thus, the seal line (1)
The seal line (12a) provided with 2a) and (12b) in the upper surface area of the absorber (3) does not change the size of the diaper main body from the seal line formed outside both side edges of the absorber. If the length between (12) and (12b) is the same, the width of the absorber can be made larger, so that the absorption amount of the absorber can be increased. In FIG. 1, the seal lines (12a) and (12b) correspond to the side sheets (10a) (1).
0b) and the liquid-permeable topsheet (2) are shown, but may be further bonded to the liquid-impermeable backsheet (1).

(Example 2) As shown in FIG. 4, one side edge of the hydrophilic side sheets (10a) and (10b) is attached to both side edges of the liquid-impermeable back sheet (1), respectively. The leg gathers (5a) and (5b) are formed by joining with the member (6) interposed therebetween, and the leg gathers (5a) and (5b) are joined to the back sheet (1) inside thereof so that the first seal line (1
2a) and (12b) were provided and further extended inward to form three-dimensional gathers (7a) and (7b). Next, both side edges of the liquid-permeable top sheet (2) are extended downward to abut against the liquid-impermeable back sheet (1), and the both side edges are joined to the back sheet, thereby extending in the longitudinal direction. Are provided with second seal lines (13a) and (13b). According to such a configuration, a disposable diaper having the same effects as in the first embodiment can be obtained.

(Example 3) As shown in FIG. 5, a three-dimensional gather (7a) (7b) made of a hydrophilic nonwoven fabric is sealed on a liquid-permeable top sheet (2) in the upper surface area of the absorber in a longitudinally linear seal. Side sheet (10a) joined by lines (12a) (12b) and joined to both side edges of the back sheet (1) to form leg gathers (5a) (5b)
(10b) is extended inward to seal line (12).
a) Simultaneously joined to (12b). That is, hydrophilic three-dimensional gathers (7a) and (7b) and hydrophobic side sheets (10
a) and (10b) as separate members, the seal edge of the hydrophilic three-dimensional gathers (7a) (7b) and the inner edge of the hydrophobic side sheets (10a) (10b) are simultaneously sealed. (12a) It joined to the liquid-permeable topsheet (2) by (12b). The disposable diaper having such three-dimensional gathers also has the effect of preventing stuffiness on the skin similarly to the case of the first embodiment. However, as shown in FIG. (10a) A long side pocket space (b) is formed in a portion reaching the back sheet (1) through (10b),
The excrement that tends to flow in the horizontal direction even when the load due to the movement or weight of the wearer is held in this space (b), so that it does not immediately flow in the horizontal direction.

According to the configuration shown in FIG. 5, the left and right side portions of the absorber (3) are doubled by both side edges of the liquid-permeable top sheet (2) and the side sheets (10a) (10b). As a result, the shape does not collapse due to the movement of the wearer or the like, so that the absorption amount can be prevented from lowering. Further, in FIG. 5, even when the seal lines (12a) and (12b) are provided not on the upper surface area of the absorber but on both sides of the absorber, the stuffiness prevention effect is effective.

(Embodiment 4) As shown in FIG. 6, the seal line between the hydrophobic side sheets (10a) (10b) and the hydrophilic three-dimensional gathers (7a) (7b) is formed outside the both sides of the absorber (3). First sealing lines (12a) and (12b) are provided on the liquid-impermeable back sheet (1) in the longitudinal direction, and both side edges of the liquid-permeable top sheet (2) are extended downward to form the back sheet. And the second seal lines (13a) and (13b) were provided.

[0016]

As described above, according to the present invention, the disposable diaper can be prevented from stuffiness of the wearer's skin, furthermore, sweat can be removed and residual urine can be prevented. Is obtained. In addition, the water absorption area can be increased, and this has the effect of reducing lateral leakage.

[Brief description of the drawings]

FIG. 1 shows a disposable diaper, in which (a) is a plan view and (b) is a cross-sectional view taken along line AA ′ of (a).

FIG. 2 is a perspective view of the same.

FIG. 3 is a cross-sectional view showing a state where the three-dimensional gathers have fallen outward.

FIG. 4 is a cross-sectional view showing a disposable diaper according to a second embodiment of the present invention.

FIG. 5 is a transverse sectional view showing a disposable diaper according to a third embodiment of the present invention.

FIG. 6 is a cross-sectional view illustrating a disposable diaper according to a fourth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Impermeable back sheet 2 Liquid permeable top sheet 3 Absorber 4a-4d Fastening tape 5a, 5b Leg gather 6 Leg gather elastic member 7a, 7b, 7 'Solid gather 10a, 10b Side sheet 11 Solid gather elastic Member 12a, 12b (First) Seal line 13a, 13b Second seal line

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Kanae Kuki 6-22-1, Nishi-Shinjuku, Shinjuku-ku, Tokyo Fukui term in Crecia Co., Ltd. (reference) 3B029 BB05 BB06 BD12 BD13 BD14 BD22 4C098 AA09 CC10 CC12 CE07 CE08 DD10 DD25 DD26

Claims (7)

[Claims] 1. A long body in which an absorber is arranged between a liquid-permeable top sheet and a liquid-impermeable backsheet, and a sidesheet attached to the liquid-impermeable backsheet extending to both outer sides of the absorber. One side edge of each is joined to provide a leg gather,
Further, in a disposable diaper in which a side sheet extending inward is joined by a seal line provided in a longitudinal direction and a side sheet inside the seal line is formed into a three-dimensional gather, at least the three-dimensional gather is made of a hydrophilic material. Disposable diapers with a good touch. 2. The side sheet is made of a hydrophilic material.
Disposable diapers with a good touch as described. 3. The disposable diaper according to claim 2, wherein a seal line in which the side sheet is joined to the liquid-permeable top sheet is provided inside both side edges of the absorber. 4. When a side sheet is joined to a liquid-impervious backsheet extended to both outsides of an absorber to form a seal line, both side edges of the liquid-pervious topsheet are covered with the liquid-impervious backsheet. 3. The disposable diaper according to claim 1, wherein the disposable diaper is joined to a back sheet. 5. A three-dimensional gather is provided along both longitudinal sides of the long body in which an absorber is disposed between a liquid-permeable top sheet and a liquid-impermeable back sheet, on both sides in the longitudinal direction of the liquid-permeable top sheet. In addition, in a disposable diaper provided with leg gathers in the longitudinal direction of both side edges of the liquid-impermeable backsheet extended to both outer sides of the absorbent body, one side edge is provided on each of both side edges of the liquid-impermeable backsheet. The hydrophobic side sheet formed with leg gathers by joining the parts is extended inward and joined by a seal line along the longitudinal direction, and a three-dimensional gather made of a hydrophilic material is erected from the seal line. Disposable diapers with good touch. 6. The disposable diaper according to claim 5, wherein the seal line is provided inside both side edges of the absorber. 7. A liquid-impervious backsheet extended to both outer sides of an absorber and provided with seal lines, wherein both side edges of a liquid-pervious topsheet are joined to the liquid-impervious backsheet. Item 5. A disposable diaper having a good touch according to item 5.