Pad
11612520 ยท 2023-03-28
Assignee
Inventors
Cpc classification
A61F13/15
HUMAN NECESSITIES
A61F13/15747
HUMAN NECESSITIES
A61F13/49
HUMAN NECESSITIES
A61F13/511
HUMAN NECESSITIES
International classification
A61F13/15
HUMAN NECESSITIES
A61F13/49
HUMAN NECESSITIES
A61F13/511
HUMAN NECESSITIES
Abstract
To provide a pad that folds in three in the front-back direction maintaining the shapes of a large number of convex portions protruding on a front-face sheet that prevents the deterioration of liquid diffusibility. The left front side portion and the left back side portion are folded inward with a first left side folding line which is extending in the front-back direction as the center for the folding and which is provided close to the left side with respect to the left side narrowing edge, and the right front side portion and the right back side portion are folded inward with a first right side holding line which is extending in the front-back direction and which is provided close to the right side with respect to the left side narrowing edge.
Claims
1. A pad comprising a liquid-pervious front-face sheet, a liquid-impervious back-face sheet, and an absorber disposed between the front-face sheet and the back-face sheet, wherein convex portions are formed to protrude on the front-face sheet, the absorber is formed with a front side portion positioned on a front side in a front-back direction, a narrowing portion positioned in a central portion in the front-back direction, and a back side portion positioned on a back side in the front-back direction, in a planar view, a left front side portion of the front side portion is extended to a left side with respect to a left side narrowing edge of a narrowest portion of the narrowing portion, and a right front side portion of the front side portion is extended to a right side with respect to a right side narrowing edge of the narrowest portion of the narrowing portion, in the planar view, a left back side portion of the back side portion is extended to the left side with respect to the left side narrowing edge of the narrowest portion of the narrowing portion, and a right back side portion of the back side portion is extended to the right side with respect to the right side narrowing edge of the narrowest portion of the narrowing portion, the left front side portion and the left back side portion are folded inward with a first left side folding line, which is extending in the front-back direction as a center for folding and which is provided close to the left side with respect to the left side narrowing edge, the right front side portion and the right back side portion are folded inward with a first right side folding line which is extending in the front-back direction as a center for folding and which is provided close to the right side with respect to the right side narrowing edge, in the planar view, a second folding line extending in a width direction is provided on the front side of two positions at which the absorber is divided into three in the front-back direction, and a third folding line extending in the width direction is provided on the back side of the two positions, the front side portion, in a state where the left front side portion and the right front side portion are folded, is folded inward with the second folding line as a center for folding, or the back side portion, in a state where the left back side portion and the right back side portion are folded, is folded inward with the third folding line as a center for folding, after that, the back side portion, in a state where the left back side portion and the right back side portion are folded, is folded inward with the folding line as a center for folding or the front side portion, in a state where the left front side portion and the right front side portion are folded, is folded inward with the third folding line as a center for folding, and the first left side folding line is positioned on the left side narrowing edge, and the first right side folding line is positioned on the right side narrowing edge.
2. The pad according to claim 1, wherein a first left front side overlapping portion and a first right front side overlapping portion each having a rectangular shape are provided at sites overwrapping with the first left side folding line and the first right side folding line, respectively in a front portion of the front side portion, a second left back side overlapping portion and a second right back side overlapping portion each having a triangular shape and having a top portion on the front side are provided at sites overlapping with the first left side folding line and the first right side folding line, respectively in a front portion of the back side portion, and the second left back side overlapping portion and the second right back side overlapping portion are each extended to the front side with respect to the third folding line.
3. The pad according to claim 1, wherein a third left middle side overlapping portion and a third right middle side overlapping portion each having a rectangular shape are provided at sites overlapping with the second folding line on both sides of the narrowing portion, a second left back side overlapping portion and a second right back side overlapping portion each having a triangular shape and having a top portion on the front side are provided at sites overlapping with the first left side folding line and the first right side folding line, respectively in a front portion of the back side portion, and the second left back side overlapping portion and the second right back side overlapping portion are each extended to the front side with respect to the third folding line.
4. A pad comprising a liquid-pervious front-face sheet, a liquid-impervious back-face sheet, and an absorber disposed between the front-face sheet and the back-face sheet, wherein convex portions are formed to protrude on the front-face sheet, the absorber is formed with a front side portion positioned on a front side in a front-back direction, a narrowing portion positioned in a central portion in the front-back direction, and a back side portion positioned on a back side in the front-back direction, in a planar view, a left front side portion of the front side portion is extended to a left side with respect to a left side narrowing edge of a narrowest portion of the narrowing portion, and a right front side portion of the front side portion is extended to a right side with respect to a right side narrowing edge of the narrowest portion of the narrowing portion, in the planar view, a left back side portion of the back side portion is extended to the left side with respect to the left side narrowing edge of the narrowest portion of the narrowing portion, and a right back side portion of the back side portion is extended to the right side with respect to the right side narrowing edge of the narrowest portion of the narrowing portion, the left front side portion and the left back side portion are folded inward with a first left side folding line, which is extending in the front-back direction as a center for folding and which is provided close to the left side with respect to the left side narrowing edge, the right front side portion and the right back side portion are folded inward with a first right side folding line which is extending in the front-back direction as a center for folding and which is provided close to the right side with respect to the right side narrowing edge, in the planar view, a second folding line extending in a width direction is provided on the front side of two positions at which the absorber is divided into three in the front-back direction, and a third folding line extending in the width direction is provided on the back side of the two positions, the front side portion, in a state where the left front side portion and the right front side portion are folded, is folded inward with the second folding line as a center for folding, the left front side portion is disposed on an inner side of the first left back side portion extending on the front side with respect to the third folding line in the left back side portion, the right front side portion is disposed on an inner side of the first right back side portion extending on the front side with respect to the third folding line in the right back side portion, after that, the back side portion, in a state where the left back side portion and the right back side portion are folded, is folded inward with the third folding line as a center for folding, and the first left side folding line is positioned on the left side narrowing edge, and the first right side folding line is positioned on the right side narrowing edge.
5. The pad according to claim 4, wherein a first left front side overlapping portion and a first right front side overlapping portion each having a rectangular shape are provided at sites overwrapping with the first left side folding line and the first right side folding line, respectively in a front portion of the front side portion, a second left back side overlapping portion and a second right back side overlapping portion each having a triangular shape and having a top portion on the front side are provided at sites overlapping with the first left side folding line and the first right side folding line, respectively in a front portion of the back side portion, and the second left back side overlapping portion and the second right back side overlapping portion are each extended to the front side with respect to the third folding line.
6. The pad according to claim 4, wherein a third left middle side overlapping portion and a third right middle side overlapping portion each having a rectangular shape are provided at sites overlapping with the second folding line on both sides of the narrowing portion, a second left back side overlapping portion and a second right back side overlapping portion each having a triangular shape and having a top portion on the front side are provided at sites overlapping with the first left side folding line and the first right side folding line, respectively in a front portion of the back side portion, and the second left back side overlapping portion and the second right back side overlapping portion are each extended to the front side with respect to the third folding line.
Description
BRIEF DESCRIPTION OF DRAWINGS
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DESCRIPTION OF EMBODIMENTS
(17) As illustrated in
(18) The pad includes a liquid-impervious back-face sheet 21, a liquid-pervious front-face sheet 22, an absorber 23 disposed between the back-face sheet 21 and the front-face sheet 22, and the three-dimensional gathers 24 formed on both the side portions of the front-face sheet 22 in the width direction.
(19) On the outer side of the absorber 23, the back-face sheet 21 is provided so as to slightly protrude from the outer peripheral edge of the absorber 23. As the back-face sheet 21, in addition to a polyethylene film or the like, a sheet having moisture permeability without impairing water interception can be used from the viewpoint of prevention of stuffiness. A microporous sheet can be used for this waterproof/moisture pervious sheet, and the microporous sheet is obtained by melt kneading an olefinic resin such as polyethylene resin and polypropylene resin, and inorganic filler, forming a sheet with the kneaded materials, and then uniaxially or biaxially stretching the sheet.
(20) An outer sheet 27 made of a nonwoven fabric is provided on the outer side of the back-face sheet 21 so as to protrude slightly from the outer peripheral edge of the back-face sheet 21. As the outer sheet 27, various types of nonwoven fabrics can be used. As the material fibers constituting the nonwoven fabric, not only synthetic fibers of olefin type such as polyethylene or polypropylene, polyester type, amide type and the like, regenerated fiber such as rayon and cupra, natural fiber such as cotton can be used.
(21) On the inside of the absorber 23, the front-face sheet 22 is provided. In the first embodiment, the width in the width direction of the front-face sheet 22 is narrower than the width in the width direction of the absorber 23, but the width in the width direction of the front-face sheet 22 can be formed wider than the width in the width direction of the absorber 23. As the front-face sheet 22, a porous or nonporous nonwoven fabric, a porous plastic sheet or the like is used. As the material fibers constituting the nonwoven fabric, not only synthetic fibers of olefin type such as polyethylene or polypropylene, polyester type, amide type and the like, regenerated fiber such as rayon and cupra, natural fiber such as cotton can be used.
(22) Between the front-face sheet 22 and the absorber 23, an intermediate sheet 25 is provided. As the intermediate sheet 25, a material having low water retentivity and high liquid permeability, such as various nonwoven fabrics, mesh films, or the like, can be used.
(23) The three-dimensional gathers 24 are provided on both side portions in the width direction of the front-face sheet 22. Each of the three-dimensional gathers 24 is formed of a fixed portion fixed to a side portion in the width direction of the outer sheet 27 and a main unit section extending from the fixed portion to the side portion of the inner surface of the front-face sheet 22 beyond the side portion in the width direction of the absorber 23 and the like. In addition, the front and back end portions of the main unit section in the front-back direction are fixed to the front-face sheet 22, and the central portion in the front-back direction of the main unit section is not fixed to the front-face sheet 22 but rises inward. In
(24) The three-dimensional gather 24 is formed of a double gather sheet 24A and an elongated elastic member 24B extending in the front-back direction. As the material of the gather sheet 24A, a plastic sheet or a meltblown nonwoven fabric can be used, but a water repellent treatment can be used for the nonwoven fabric with silicone or the like from the viewpoint of texture to the skin. In addition, as the elastic member 24B, the materials which are usually used, such as styrene rubber, olefin rubber, urethane rubber, ester rubber, polyurethane, polyethylene, polystyrene, styrene butadiene, silicone, polyester, and the like which are formed in a thread-like shape, a stripe-like shape, a band-like shape, and the like can be used. As illustrated in
(25) At the front and back end portions in the front-back direction of the pad, the front-face sheet 22 and the outer sheet 27 are fixed to form end flap portions EF, and at both side end portions in the width direction of the pad, the gather sheets 24A and the outer sheet 27 are fixed to form side flap portions SF. Note that the absorber 23 does not extend in the end flap portions EF and the side flap portions SF.
(26) The absorber 23 is formed of an inner absorber 23A positioned on the inner side of a wearer's body surface side and an outer absorber 23B positioned on the outer side. In addition, the inner absorber 23A and the outer absorber 23B are accumulated bodies of pulp fibers, assemblies of filaments such as cellulose acetate, or nonwoven fabrics, and as necessary, super absorbent polymer particles in the form of particulates, etc. can be mixed and fixed. In addition, it is preferable that the inner absorber 23A and the outer absorber 23B are wrapped with a wrapping sheet 26 such as crepe paper or the like in order to prevent super absorbent polymer particles from falling off or the like.
(27) The outer absorber 23B is formed by a front side portion 30 positioned at the front body F of the pad, a narrowing portion 31 positioned at the crotch portion C of the pad, and a back side portion 32 positioned at the back body B of the pad. The narrowing portion 31 is formed by notching, in substantially trapezoidal shape, both side portions in the width direction positioned in the front side portion 30 and the back side portion 32 of the outer absorber 23B.
(28) The minimum width of the narrowing portion 31 is formed to be 50 to 65% of the width W1 of the front side portion 30 and the back side portion 32. Further, when the front end of the outer absorber 23B is 0%, and the rear end of the outer absorber 23B is 100%, the front end of the narrowing portion 31 is disposed at 10 to 25%, the back end of the narrowing portion 31 is disposed at 40 to 65%, and a portion having the minimum width of the narrowing portion 31 is disposed at 25 to 30%.
(29) The inner absorber 23A is formed in a substantially rectangular shape extending in the front-back direction at a predetermined interval in the width direction. The length in the front-back direction of the inner absorber 23A is formed to be 60 to 90% of the length L1 in the front-back direction of the outer absorber 23B, and the width in the width direction of the inner absorber 23A is formed to be 60% to 90% of the width W1 of in the width direction of the outer absorber 23B. In addition, in the inner absorber 23A, at a part facing the narrowing portion 31 of the outer absorber 23B, a pair of substantially rectangular slits 40 having a long side in the front-back direction and a predetermined length in the width direction is provided with a predetermined interval in the width direction.
(30) As illustrated in
(31) Accordingly, as illustrated in
(32) The convex portion 41 can be formed by extruding the front-face sheet 22 from the outside to the inside by embossing. Further, the shape of the convex portion 41 can be formed in a circular shape, an elliptical shape, or a polygonal shape.
(33) Next, a folding method of the pad for preventing the convex portion 41 projecting on the front-face sheet 22 from being crushed will be described. In the following description, a folding method of the outer absorber 23B in which the three-dimensional gathers 24, the front-face sheet 22, the inner absorber 23A, the back-face sheet 21, and the like of the pad are removed will be described for easy understanding.
(34) As illustrated in
(35) Next, as illustrated in
(36) As a result, an outer surface of the left front side portion 30A overlaps on an outer surface of the first left back side portion 36A extending to the front side with respect to the third folding line 35 in the left back side portion 32A, and an outer surface of the right front side portion 30B overlaps on an outer surface of the first right back side portion 36B extending on the front side with respect to the third folding line 35 in the right back side portion 32B. As illustrated in
(37) Next, as illustrated in
(38) As a result, an outer surface of the second left back side portion 37A extending to the back side with respect to the third folding line 35 in the left back side portion 32A overlaps on an outer surface of the front side portion 30, and an outer surface of the second right back side portion 37B extending on the back side with respect to the third folding line 35 in the right back side portion 32B overlaps on an outer surface of the front side portion 30. As illustrated in
(39) In the first embodiment, after the left back side portion 32A and the right back side portion 32B are folded inward with the third folding line as the center for the folding, the left front side portion 30A and the right front side portion 30B can be folded inward with the second folding line as the center for the folding.
(40) As a result, as illustrated in
Second Embodiment
(41) Next, a pad according to a second embodiment will be described. The same parts as those of the pad according to the first embodiment are denoted by the same reference signs, and description thereof will be omitted. As illustrated in
(42) A second left back side overlapping portion 51A and a second right back side overlapping portion 51B which are substantially triangular in shape are provided at sites facing the third folding line 35 in both side portions in the width direction of the outer absorber 23B. In addition, the front side portion of the second left back side overlapping portion 51A extends to the front side with respect to the third folding line 35, and the back side portion of the second left back side overlapping portion 51A extends to the back side with respect to the third folding line 35. Similarly, the front side portion of the second right back side overlapping portion 51B extends to the front side with respect to the third folding line 35, and the back side portion of the second right back side overlapping portion 51B extends to the back side with respect to the third folding line 35. In addition, the second left back side overlapping portion 51A and the second right back side overlapping portion 51A can be formed by increasing the weight per unit area of each accumulated body of pulp fibers or the like forming the outer absorber 23B.
(43) Consequently, by increasing the height in the inner-outer direction of the space S1 formed when the outer absorber 23B is folded inward with the first folding line 33 as the center for the folding, the front side portion 30 of the outer absorber 23B is folded inward with the second folding line 34 as the center for the folding, and the back side portion 32 of the outer absorber 23B is folded inward with the third folding line 35 as the center for the folding, it is possible to further maintain the shapes of the convex portions 41 of the front-face sheet 22 positioned at the central portion of the front side portion 30 and the convex portions 41 of the front-face sheet 22 positioned at the central portion of the narrowing portion 31.
Third Embodiment
(44) Next, a pad according to a third embodiment will be described. The same members as those of the pad according to the first embodiment are denoted by the same reference signs, and description thereof will be omitted. As illustrated in
(45) A second left back side overlapping portion 51A and a second right back side overlapping portion 51B which are substantially triangular in shape are provided at sites facing the third folding line 35 in both side portions in the width direction of the outer absorber 23B. In addition, the front side portion of the second left back side overlapping portion 51A extends to the front side with respect to the third folding line 35, and the back side portion of the second left back side overlapping portion 51A extends to the back side with respect to the third folding line 35. Similarly, the front side portion of the second right back side overlapping portion 51B extends to the front side with respect to the third folding line 35, and the back side portion of the second right back side overlapping portion 51B extends to the back side with respect to the third folding line 35. In addition, the second left back side overlapping portion 51A and the second right back side overlapping portion 51A can be formed by increasing the weight per unit area of each accumulated body of pulp fibers or the like forming the outer absorber 23B.
(46) Consequently, by increasing the height in the inner-outer direction of the space S1 formed when the outer absorber 23B is folded inward with the first folding line 33 as the center for the folding, the front side portion 30 of the outer absorber 23B is folded inward with the second folding line 34 as the center for the folding, and the back side portion 32 of the outer absorber 23B is folded inward with the third folding line 35 as the center for the folding, it is possible to further maintain the shapes of the convex portions 41 of the front-face sheet 22 positioned at the central portion of the front side portion 30 and the convex portions 41 of the front-face sheet 22 positioned at the central portion of the narrowing portion 31.
INDUSTRIAL APPLICABILITY
(47) The present invention is applicable to an absorbent article.
REFERENCE SIGNS LIST
(48) 21 back-face sheet 22 front-face sheet 23 absorber 30 front side portion 30A left front side portion 30B right front side portion 31 narrowing portion 31A left side narrowing edge 31B right side narrowing edge 32 back side portion 32A left back side portion 32B right back side portion 33A first left side folding line 33B first right side folding line 34 second folding line 35 third folding line 36A first left back side portion 36B first right back side portion 41 convex 50A first left front side overlapping portion 50B first right front side overlapping portion 51A second left back side overlapping portion 51B second right back side overlapping part 52A third right middle side overlapping portion 52B third right middle side overlapping portion