JP2011005345A - Wearable article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wearable article which can suppress liquid from being leaked from a waistline area to the outside.SOLUTION: In the waistline area W, a cuff 8 is formed across a prescribed section P extending from a side edge 2b in the longitudinal direction of a lamination panel 2 to the center, by folding a hydrophobic sheet member 7, which forms a surface layer on the width directional side of the lamination panel 2, outward in the width direction of the lamination panel 2, joining it with the surface layer. In the prescribed section P, an elastic member 9 extending along the longitudinal direction of the lamination panel 2 is provided at the leading edge 8a of the cuff 8 in the width direction of the lamination panel 2 in such a manner that the sheet member 7 is wound to the bent inner side.

Description

  The present invention relates to a wearing article such as a disposable diaper.

  As a conventional wearing article, a substantially rectangular strip-shaped laminated panel having a liquid-permeable top sheet, a liquid-impervious back sheet, and a liquid-absorbent core interposed between the top sheet and the back sheet, and laminated Side flaps that extend laterally on both sides in the longitudinal direction of the panel, and a hydrophobic sheet member in which the widthwise side portions of the laminated panel form the outer layer on each side in the widthwise direction of the laminated panel A cuff formed by folding and extending in the longitudinal direction along the widthwise side edge of the laminated panel and having a standing direction at least in the longitudinal intermediate portion thereof, the longitudinal side portion of the laminated panel and its width A waist area including side flaps projecting on both sides in the direction is formed at two places on both sides in the longitudinal direction, and a laminated panel between the two waist areas and both in the width direction. Those crotch region including a part of the cuff is formed has been known (for example, Patent Document 1).

  In the wearing article disclosed in Patent Document 1, the cuff is laid down inward in the width direction from the fixed end edge in the waist area (both sides in the longitudinal direction of the laminated panel), and the top sheet on the inner side in the width direction than the cuff. It is joined in a state of being in close contact with the top.

Japanese Patent No. 3576034

  However, in the wearing article configured as described above, the cuff lies over a wide range of the waist circumference region. The sheet member forming the cuff (that is, the hydrophobic sheet member in which the side portion in the width direction of the laminated panel forms the outer surface layer) has hydrophobicity.

  For this reason, in the said wearing article, there existed a problem that liquids, such as urine, would be easy to leak outside along the surface of the cuff which lies in a comparatively wide range in the waist circumference region.

  In addition, since the cuff lies over a relatively wide area in the waist area, the area where the laminated panel having the liquid-absorbent core directly contacts the skin of the wearer without using the cuff is narrowed. The lowering of the liquid absorption capability has also contributed to the possibility of leakage to the outside.

  Then, an object of this invention is to obtain the wearing article which can suppress that a liquid leaks outside from the trunk periphery area.

  In the invention of claim 1, a substantially rectangular belt-shaped laminate having a liquid-permeable top sheet, a liquid-impervious back sheet, and a liquid-absorbent core interposed between the top sheet and the back sheet. The panel, side flaps that project on both sides in the longitudinal direction of the laminated panel on both sides in the width direction, and the widthwise side portions of the laminated panel form the outer layer on each side in the width direction of the laminated panel A cuff formed by folding a hydrophobic sheet member, extending in the longitudinal direction along the widthwise side edge of the laminated panel, and having a standing orientation at least in the middle part in the longitudinal direction. A waist region including a side portion and side flaps projecting on both sides in the width direction is formed at two locations on both sides in the longitudinal direction, and a laminated panel between the two waist regions In the wearing article in which the crotch region including the cuffs on both sides in the width direction is formed, at least one of the two waist circumference regions is a predetermined section from the side edge in the longitudinal direction of the laminated panel to the center side Then, the hydrophobic sheet member whose width direction side portion of the laminated panel forms the outer layer of the laminated panel is folded back to the outer side in the width direction of the laminated panel and joined to the surface layer, thereby forming the cuff. In the predetermined section, an elastic member extending along the longitudinal direction of the laminated panel is provided so as to be wound inside the bent end of the cuff in the width direction of the laminated panel. It is characterized by that.

  In the invention of claim 2, within the predetermined section, the base edge of the portion of the laminated panel in which the widthwise side portion of the laminated panel is folded back outward in the widthwise direction of the laminated panel And the position of the tip edge of the portion folded back inward in the width direction are substantially matched in the width direction.

  In the invention of claim 3, the laminated panel in the crotch region is provided with an elastic member extending along the widthwise side edge at a position separated from the fixed end edge of the cuff to the outside in the width direction of the laminated panel. The fixed edge of the portion where the hydrophobic sheet member in which the widthwise side portion of the laminated panel forms the surface layer of the laminated panel within the predetermined section is raised to the surface layer side of the laminated panel in an unfolded state of the laminated panel. Further, the present invention is characterized in that the elastic member is spaced apart from the position where the elastic member is provided inward in the width direction.

  In the invention of claim 4, within the predetermined section, the hydrophobic sheet member in which the widthwise side portion of the laminated panel forms the outer surface of the laminate panel is folded back outward in the widthwise direction of the laminated panel. It is characterized in that it is folded back inward in the width direction at a position spaced outward in the width direction from the position joined to the head.

  According to the invention of claim 1, in at least one of the two waist circumference regions, the width direction side portion of the laminated panel extends over a predetermined section from the side edge in the longitudinal direction of the laminated panel to the center side. Since the cuff is formed by the hydrophobic sheet member forming the surface layer of the glue being folded back on the outer side in the width direction of the laminated panel and bonded onto the surface layer, the region where the cuff lies in the waist area. In other words, since the width dimension of the liquid-permeable top sheet can be increased, it is possible to prevent the liquid from leaking to the outside along the surface of the cuff. .

  In addition, since the hydrophobic sheet member whose width direction side portion of the laminated panel forms the outer layer is folded back to the outer side in the width direction and joined to the surface layer, the cuff is more laminated in the waist area than the conventional structure. An area where the laminated panel having the liquid-absorbent core is in direct contact with the skin of the wearer without using the cuff is disposed at both sides in the width direction. It can be secured more widely. Therefore, the liquid absorptivity in the waist area can be increased, and leakage of liquid to the outside can be reduced.

  According to invention of Claim 2, the position of the base edge of the part which turned the hydrophobic sheet | seat sheet | seat which the width direction side part of the said laminated panel forms the surface of a fold back to the width direction outer side, and a sheet | seat is further widthwise inner side Since the position of the tip edge of the folded back portion is made to substantially coincide with the width direction, the area of the area where the cuff lying in the waist area is in close contact with the skin can be made narrower. Accordingly, it is possible to further suppress the leakage of the liquid to the outside.

  According to the invention of claim 3, it is possible to obtain a state in which the cuff is raised in the crotch region due to the contraction of the elastic member, and the state where the cuff and the elastic member are arranged at appropriate positions (that is, the cuff is thigh). In the state where the elastic member is disposed on the undercarriage portion, and the desired leakage prevention function can be obtained.

  According to the invention of claim 4, the cuff is on the surface side of the top sheet because the extra length region of the sheet member is formed between the position where the sheet member is joined on the surface layer and the position where the sheet member is folded back in the width direction. To be able to inflate. For this reason, at the boundary between the part where the cuff stands at the center in the longitudinal direction of the laminated panel and the part lying on the side in the longitudinal direction and in close contact with the skin, the adhesion of the cuff to the skin is enhanced, and the leakage resistance by the cuff is improved. Can be increased.

The perspective view of the wearing article concerning the embodiment of the present invention. The perspective view which expands and shows a part of wearing article concerning 1st Embodiment of this invention. III-III sectional drawing of FIG. The figure which shows the state which the cuff shown in FIG. 3 expanded. Sectional drawing in the same cross section as FIG. 3 about the wearing article concerning 2nd Embodiment of this invention.

(First embodiment)
1 is a perspective view of a wearing article according to the present embodiment, FIG. 2 is an enlarged perspective view showing a part of the wearing article (near the waist area), and FIG. 3 is a cross-sectional view taken along line III-III in FIG. 4 is a diagram showing a state where the cuff shown in FIG. 3 is inflated. In addition, below, it illustrates about the case where a wear article is implemented as a disposable diaper.

  As shown in FIG. 1, the laminated panel 2 includes a liquid-permeable top sheet 3, a liquid-impermeable back sheet 4, and the top sheet 3 and the back sheet 4. The liquid-absorbent core 5 is bonded to at least one of the back sheets 4 and has a substantially rectangular belt shape as a whole in the developed state.

  In addition, a pair of side flaps 6 and 6 are provided on both side portions in the longitudinal direction of the laminated panel 2 so that both sides in the width direction overhang.

  Further, on the both sides in the width direction of the laminated panel 2, the sheet members 7 forming the width direction side portions of the laminated panel 2 and the surface layers of the side flaps 6 are folded back in the longitudinal direction along the width direction side edge 2 a. Extending cuffs 8, 8 are formed.

  The cuff 8 is formed by being bent so as to protrude with a substantially constant width (height) on the surface of the top sheet 3 at the central portion in the longitudinal direction of the laminated panel 2, and the tip edge 8a has, for example, a string shape. The elastic member 9 is attached in a stretched state. By this elastic member 9, the tip edge 8 a of the cuff 8 is contracted in the longitudinal direction to form a gather of the cuff 8, and a force pulling both sides in the longitudinal direction of the laminated panel 2 to the center side acts through the cuff 8. The laminated panel 2 has a tendency to bend in the longitudinal direction with the top sheet 3 side inward, and to have the cuff 8 stand up like a wall at the longitudinal center of the laminated panel 2.

  Further, in the center portion in the longitudinal direction of the laminated panel 2, the width direction side edge 2 a and the fixed portion are located at a position spaced apart from the fixed end edge 8 b of the cuff 8 to the width direction outer side (width direction side edge 2 a side). For example, a string-like elastic member 10 is provided in an extended state along the end edge 8b. Due to the elastic member 10, a gather is generated on the side in the width direction of the laminated panel 2.

  On the other hand, the cuff 8 is folded and joined to lie on the surface of the top sheet 3 at both sides in the longitudinal direction of the laminated panel 2. The detailed shape of this part will be described later.

  In the disposable diaper 1 having such a configuration, each side portion in the longitudinal direction of the laminated panel 2 and a pair of side flaps 6 and 6 projecting to both sides in the width direction become the waist regions W and W. These two waist regions W and W are in close contact with the abdomen and back sides of the wearer's waist in the mounted state, and are provided by tape fasteners 11 and 11 provided at the ends of the pair of side flaps 6 and 6, respectively. Connected together to form a series of annular regions around the wearer's torso.

  In addition, a belt-like elastic member (not shown) is provided in a stretched state on both side portions in the longitudinal direction of the laminated panel 2 along the longitudinal side edges 2b. Elasticity is given.

  The crotch region I is formed by the laminated panel 2 between the two waistline regions W and the pair of cuffs 8 and 8 provided on both sides in the width direction. The crotch region I is applied to the crotch of the wearer, and the cuffs 8, 8 having a propensity for standing up serve as leak-proof walls, so that the liquid contacts the top sheet 3 side of the laminated panel 2 (the skin of the wearer). Side) to prevent leakage to the outside.

  In the state in which the diaper 1 is worn, the elastic member 10 provided along the widthwise side edge 2a on the both sides in the width direction in the center portion in the longitudinal direction of the laminated panel 2 serving as the crotch region I is provided by the wearer. It will bear the function of bringing the lateral side of the laminated panel 2 into close contact with the base of the leg.

  Here, the structure of the cuff 8 in the longitudinal direction side part of the laminated panel 2 is demonstrated.

  In the waist area W, the sheet member 7 in which the width direction side portion of the laminated panel 2 forms a surface layer over the predetermined section P (FIG. 2) from the longitudinal side edge 2b of the laminated panel 2 to the center side. The laminated panel 2 is folded back on the outer side in the width direction with the base edge A as a starting point, and is joined on the surface layer in a joining region B. The sheet member 7 is joined to the top sheet 3 in the joining area C, and the edge C1 on the inner side in the width direction of the joining area C is a fixed edge D where the cuff 8 rises to the surface layer side of the top sheet 3. It becomes.

  Further, the sheet member 7 is folded back inward in the width direction starting from a bent end edge E that is spaced further outward in the width direction than the end edge B1 in the width direction of the joining region B.

  The sheet member 7 is folded back to the top sheet 3 side at the leading edge F that is folded back at the bent edge E, and the folded portion is joined onto the top sheet 3 in the joining region G. At this time, the joining area G is spaced apart from the front end edge F in the width direction. The leading edge F also becomes the leading edge 8a of the cuff 8 at the longitudinal center (inseam region I) of the laminated panel 2, and is elastically wound around the bent inner side of the sheet member 7 at the leading edge 8a. A member 9 is provided. In the waist area W, the cushion layer 12 is sandwiched between the top sheet 3 and the back sheet 4.

  In such a configuration, as described above, the sheet member 7 is folded back to the outer side in the width direction of the laminated panel 2, and further folded back to the inner side in the width direction, whereby the region (width X) in which the cuff 8 lies in the waist region W. It can be made narrower than the conventional structure. For this reason, it is possible to suppress the liquid from leaking to the outside along the surface 8c of the cuff 8.

  Further, since the sheet member 7 is folded on the outer side in the width direction and joined to the surface layer, the cuff 8 is formed in the above-described conventional structure in the waist area W. The laminated panel 2 having the liquid-absorbent core 5 is interposed through the cuff 8 at the center in the width direction of the waist region W. Therefore, it is possible to secure a wider area Y (FIG. 1) that directly contacts the wearer's skin. For this reason, the liquid absorptivity in the waist area W can be improved, and the leakage of the liquid to the outside can be reduced.

  Furthermore, as described above, the sheet member 7 whose side in the width direction of the laminated panel 2 forms the outer layer is folded back to the outer side in the width direction and joined to the surface layer (joining zone B, edge B1). Since the sheet is folded back inward in the width direction at a position (bent edge E) spaced outward in the width direction, an extra length region of the sheet member 7 between the width direction outer edge B1 and the bent edge E of the joint region B As shown in FIG. 4, the cuff 8 can swell toward the surface side of the top sheet 3. For this reason, the cuff 8 has improved adhesion to the skin at the boundary portion between the portion where the cuff 8 stands in the crotch region I and the portion where the cuff 8 lies in the waist region W and is in close contact with the wearer's skin. Leak-proof property can be improved.

  In the present embodiment, the joining region G (end edge G1) in which the portion of the sheet member 7 folded back at the leading edge F is joined on the top sheet 3 is spaced apart from the leading edge F in the width direction. Therefore, an extra length region is also formed between the leading edge F and the edge G1 on the inner side in the width direction of the joining region G, and the cuff 8 is likely to bulge to the surface side of the top sheet 3.

  Furthermore, in the present embodiment, the laminated panel 2 in the crotch region I has, as described above, the width direction side edge 2a at a position separated from the fixed end edge 8b of the cuff 8 to the outside in the width direction of the laminated panel 2. As shown in FIG. 2, the fixed edge D of the portion where the sheet member 7 rises to the surface layer side of the laminated panel 2 in the predetermined section P is provided as shown in FIG. Thus, the elastic member 10 is spaced from the position H where the elastic member 10 is provided. For this reason, it is possible to suppress both the crotch region I and the waistline region W from being pulled by the elastic member 10 so that the shape of the cuff 8 cannot maintain the desired shape.

(Second Embodiment)
FIG. 5 is a cross-sectional view of the wearing article according to the present embodiment in the same cross section (same cross section as FIG. 3) as the III-III cross section of FIG. In addition, the diaper concerning this embodiment is equipped with the component similar to the diaper concerning the said 1st Embodiment. Therefore, in the following description, common constituent elements are denoted by common reference numerals and redundant description is omitted.

  The diaper according to this embodiment is completely different from the diaper 1 according to the first embodiment except that the folded shape of the cuff 8A in the waist area W is different from the folded shape of the cuff 8 according to the first embodiment. It has the same configuration.

  In the present embodiment, within the predetermined section P, the position of the base edge A of the portion where the hydrophobic sheet member 7 in which the width direction side portion of the laminated panel 2 forms the outer layer of the laminated panel 2 is folded outward in the width direction; Further, the position of the front edge F of the portion folded back inward in the width direction is made to substantially coincide with the width direction.

  According to such a configuration, since the sheet member 7 forming the cuff 8A is double-folded with the same width, the area (width XA) of the region where the cuff 8A lying in the waist area W is in close contact with the skin is minimized. Therefore, it is possible to further suppress the leakage of the liquid to the outside through the cuff 8A.

  In each of the above embodiments, the top sheet 3 is a liquid-permeable sheet such as a nonwoven fabric or an apertured plastic film, preferably a liquid-permeable and hydrophobic sheet. On the other hand, a liquid-impermeable plastic film or a laminate sheet of a plastic film and a hydrophobic nonwoven fabric, preferably a gas-permeable liquid-impermeable sheet is used for the back sheet 4.

  For the sheet member 7 (cuff 8), a breathable liquid-impervious nonwoven fabric sheet or a breathable liquid-impervious stretchable nonwoven sheet is used. When using a stretchable nonwoven fabric sheet, the elastic member 9 can be omitted by fixing the cuff 8 on the laminated panel 2 in a stretched state. As the nonwoven fabric, a nonwoven fabric such as a spunbond nonwoven fabric, a spunlace nonwoven fabric, or a melt blown nonwoven fabric made of fibers having a basis weight of 7 to 35 g / m 2 (more preferably 10 to 20 g / m 2) can be used. Moreover, you may use the nonwoven fabric which consists of synthetic fibers which use thermoplastic resins, such as polyethylene, a polypropylene, and polyester, as a raw material. Furthermore, in order to improve softness and leakproofness, a moisture-permeable film may be used alone or in combination (bonding or sandwiching) with the above-mentioned nonwoven fabric.

  The liquid absorbent core 5 is a mixture of fluff pulp and superabsorbent polymer, compressed to a required thickness, and entirely covered with a water-permeable sheet such as tissue paper.

  Moreover, various agents and joining techniques, such as a hot-melt-adhesive agent, an adhesive, heat welding, and sonic embossing, can be utilized for joining sheets and attaching an elastic member. In addition, it is not indispensable to make a joining area | region substantially parallel along the width direction side edge, and you may provide it diagonally.

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above embodiments, and various modifications can be made. The present invention can also be implemented as an open-type disposable diaper, a pants-type disposable diaper, a diaper cover formed of a liquid-impervious plastic film or a laminate sheet of a plastic film and a hydrophobic nonwoven fabric, and the like. is there.

1 Diaper (wearing articles)
2 Laminated panel 3 Top sheet 4 Back sheet 5 Absorbent core 6 Side flap 7 Sheet member 8, 8A Cuff 9 Elastic member A Base edge C Joint area D Fixed edge E Bend edge F Tip edge H Elastic member 9 Position I provided Inseam area W Waist circumference area

Claims (4)

A substantially rectangular strip-shaped laminated panel having a liquid-permeable top sheet, a liquid-impermeable back sheet, and a liquid-absorbent core interposed between the top sheet and the back sheet;
Side flaps in which both sides in the width direction overhang on both sides in the longitudinal direction of the laminated panel,
Each of the widthwise side portions of the laminated panel is formed by folding back the hydrophobic sheet member forming the surface layer of the laminated panel, and the longitudinal direction along the widthwise side edge of the laminated panel. And a cuff having a propensity to stand at least in the longitudinal middle portion thereof,
With
A waistline region including a longitudinal side portion of the laminated panel and side flaps extending on both sides in the width direction is formed at two locations on both sides of the longitudinal direction, and a laminated panel between the two waistline regions; In the wearing article in which the crotch region including the cuffs on both sides in the width direction is formed,
At least one of the two waist circumference regions is hydrophobic in which the widthwise side portion of the laminated panel forms a surface layer across the predetermined section from the side edge in the longitudinal direction of the laminated panel to the center side. The sheet member is folded back to the outer side in the width direction of the laminated panel and bonded onto the surface layer, whereby the cuff is formed,
Within the predetermined section, an elastic member extending along the longitudinal direction of the laminated panel is provided so as to be wound inside the bent end of the cuff at the leading edge of the cuff in the width direction of the laminated panel. Wearing article characterized by.   Within the predetermined section, the position of the base edge of the portion where the hydrophobic sheet member forming the outer surface of the laminated panel in the width direction of the laminated panel is folded back outward in the width direction of the laminated panel, and the laminated panel is further widened. The wearing article according to claim 1, wherein the position of the tip edge of the portion folded back in the direction is substantially coincided with the width direction. The laminated panel in the crotch region is provided with an elastic member extending along the width direction side edge at a position spaced apart from the fixed end edge of the cuff to the outside in the width direction of the laminated panel,
Within the predetermined section, the fixed edge of the portion where the hydrophobic sheet member that forms the surface layer of the laminated panel in the width direction of the laminated panel rises to the surface side of the laminated panel, and the elastic state in the expanded state of the laminated panel The wearing article according to claim 1, wherein the wearing article is spaced apart inward in the width direction from the position where the member is provided.   Within the predetermined section, the hydrophobic sheet member forming the surface layer of the laminate panel in the width direction is folded outward in the width direction from the position where the hydrophobic sheet member is folded back to the outside in the width direction of the laminate panel and joined on the surface layer. The wearing article according to any one of claims 1 to 3, wherein the wearing article is folded back inward in the width direction at a spaced position.

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