JP6517400B2 - pad - Google Patents

Description

  The present invention relates to a pad to be attached to a tape-type disposable diaper, and more particularly to a pad folded in three in the front-rear direction in order to maintain projections formed on a surface sheet.

  Conventionally, a convex portion is formed on the surface sheet to improve diffusion of urine or the like discharged to the inner surface, and the left side of the absorber is folded inward centering on the left virtual line divided in two in the width direction of the left side of the absorber. After bending and bending the right side of the absorber inward centering on the right side imaginary line divided in the width direction of the right side of the absorber, the absorber on the front side imaginary line dividing the absorber in the front and rear direction A means has been proposed for bending the rear side of the absorber inward about the rear imaginary line dividing the absorber in the front-rear direction after bending the front side of the inner side. (Patent Document 1)

  Further, in order to prevent the decrease in the diffusibility of the liquid, means has been proposed for forming convex portions on the inner surface of the top sheet by shifting a predetermined pitch in the width direction. (Patent Document 2)

JP, 2015-157047, A Unexamined-Japanese-Patent No. 2004-174234

  However, according to the means of Patent Document 1, since the left and right portions of the absorber that is bent also at the center in the width direction of the absorber polymerize, it faces the center in the width direction of the absorber in the surface sheet. There is a risk that many convex portions formed in the portion can not maintain their shapes by the pressing of the left and right sides of the absorber. Patent Document 2 does not disclose a means for bending the pad.

  Therefore, an object of the present invention is to provide a pad that is folded in three in the front-rear direction to maintain the shape of a large number of convex portions that project to a surface sheet that prevents a decrease in the liquid diffusibility.

The means for solving the above problems are as follows.
The first means is a pad comprising a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorber provided between the top sheet and the back sheet.
The front sheet which forms the convex part which protrudes in the surface sheet and is located in the front side of the front and back direction, the constriction part located in the center part of the front and rear direction, and the back side located in the back side of the front and rear direction And the left front side of the front side extends to the left of the left narrow side of the narrowest width of the narrow side in a plan view, and the right front side of the front side is the narrowest portion of the narrow side The left rear side of the rear side extends to the left of the left narrow side of the narrowest part of the narrow portion in plan view, and The right rear side is extended to the right of the right narrow side of the narrowest portion of the narrow portion, and the left front side and the left rear side are provided close to the left side of the left narrow side. The right front side portion and the right rear side portion are provided close to the right side of the left side narrowing side. A second bending extending in the width direction to the front of a position where the absorber is divided into three in the longitudinal direction in a plan view with the first right bending line extending in the longitudinal direction And a third bending line extending in the width direction on the rear side, and bending the front side part in a state where the left front side part and the right front side part are bent, inside the second bending line as a center The left rear side and the right rear side after bending the rear side in the state where the left rear side and the right rear side are bent inward around the third bending line Part is bent inward around the third bending line, or the front part in a state where the left front part and the right front part are bent, the second fold It bends inward centering on a bending line, and each has a rectangular shape at a portion overlapping the first left bending line and the first right bending line in the front part of the front side. A triangular shape having a top on the front side, provided with a first left front overlapping part and a first right front overlapping part, in a portion overlapping the first left bending line and the first right bending line at the front of the rear side A second left rear polymerization section and a second right rear polymerization section, and the second left rear polymerization section and the second right rear polymerization section are respectively extended to the front side relative to the third bending line It is characterized by

The second means is a pad comprising a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorber provided between the top sheet and the back sheet.
The front sheet which forms the convex part which protrudes in the surface sheet and is located in the front side of the front and back direction, the constriction part located in the center part of the front and rear direction, and the back side located in the back side of the front and rear direction And the left front side of the front side extends to the left of the left narrow side of the narrowest width of the narrow side in a plan view, and the right front side of the front side is the narrowest portion of the narrow side The left rear side of the rear side extends to the left of the left narrow side of the narrowest part of the narrow portion in plan view, and The right rear side is extended to the right of the right narrow side of the narrowest portion of the narrow portion, and the left front side and the left rear side are provided close to the left side of the left narrow side. The right front side portion and the right rear side portion are provided close to the right side of the left side narrowing side. A second bending extending in the width direction to the front of a position where the absorber is divided into three in the longitudinal direction in a plan view with the first right bending line extending in the longitudinal direction And a third bending line extending in the width direction on the rear side, and bending the front side part in a state where the left front side part and the right front side part are bent, inside the second bending line as a center The left rear side and the right rear side after bending the rear side in the state where the left rear side and the right rear side are bent inward around the third bending line Part is bent inward around the third bending line, or the front part in a state where the left front part and the right front part are bent, the second fold Bending inward centering on the bending line, and at a portion overlapping with the second bending line on both sides of the constricted portion, a rectangular third left middle side overlapping portion and (3) A triangular second left rear side polymerization is provided which is provided with a right middle side polymerization portion and has a top on the front side at a position overlapping the first left side bending line and the first right side bending line at the front of the rear side. A portion and a second right rear side polymerization portion are provided, and the second left rear side polymerization portion and the second right rear side polymerization portion are respectively extended to the front side relative to the third bending line.

  The third means is characterized in that, in the first or second means, the first left bending line is positioned on the left narrow side and the first right bending line is positioned on the right narrow side. I assume.

According to the first means, the projecting portion is formed on the surface sheet, and the absorbent body is located on the front side located in the front side in the front-rear direction, the narrowed portion located in the center in the front-rear direction, and the rear side in the front-rear direction In plan view, the left front side of the front side is extended to the left of the left narrow side of the narrowest width of the narrow side in plan view, and the right front side of the front side is the maximum of the narrow side It extends to the right of the right narrow side of the narrow portion, and in plan view, the left rear side of the rear side extends to the left of the left narrow side of the narrow portion of the narrow portion, and the rear side The right rear side extends to the right of the right narrow side of the narrowest part of the narrow part, and the left front side and the left rear side are provided in the front-rear direction provided close to the left side of the left narrow side Bends inward centering on the first left bending line which extends, and extends in the front-rear direction provided on the right front side and the right rear side in proximity to the right side of the left narrow side Bending inward centering on the first right side bending line, in plan view, a second bending line extending in the width direction on the front side of the position dividing the absorber into three in the front and rear direction, and on the rear side in the width direction Provide the extending third bending line and bend the left front side and the right front side in the bent front side about the second bending line, or the left rear side and the right back After bending the rear side of the folded side inward around the third bending line, the rear side of the folded back side of the left rear side and the right rear side, the third side Since the front side in a state in which the left front side and the right front side are bent inward is bent inward centering on the bending line or inward about the second bending line, the inner surface of the constricted portion A space is formed between the inner surface of the outer portion, and between the outer surface of the outer portion and the inner surface of the front portion, so as to face the front portion, the narrow portion, and the inner side of the surface sheet facing the outer portion. A reduction in the diffusivity of maintaining the shape of the convex portions solution which projects it is possible to prevent me.
A rectangular first left front overlapping portion and a first right front overlapping portion are provided at a portion overlapping the first left bending line and the first right bending line at the front of the front side, and the front of the rear side A triangular second left rear side overlapping portion and a second right rear side overlapping portion are respectively provided on the front side at portions overlapping with the first left side bending line and the first right side bending line in the second left side, Since the side overlapping portion and the second right rear side extending portion are each extended to the front side relative to the third bending line, a larger space is formed between the inner surface of the constricted portion and the inner surface of the front side. Therefore, the convex portion protruding inward of the surface sheet facing the front side portion is not pressed by the constriction, and the convex portion protruding inward of the surface sheet facing the constriction portion is pressed by the front side In addition, the shape of the front side portion and the convex portion protruding toward the inside of the surface sheet facing the constriction portion can be further maintained, and the decrease in the liquid diffusivity can be further prevented.

According to the second means, the projecting portion is formed on the surface sheet, and the absorbent body is located on the front side located in the front side in the front-rear direction, the narrowed portion located in the center in the front-rear direction, and the rear side in the front-rear direction In plan view, the left front side of the front side is extended to the left of the left narrow side of the narrowest width of the narrow side in plan view, and the right front side of the front side is the maximum of the narrow side It extends to the right of the right narrow side of the narrow portion, and in plan view, the left rear side of the rear side extends to the left of the left narrow side of the narrow portion of the narrow portion, and the rear side The right rear side extends to the right of the right narrow side of the narrowest part of the narrow part, and the left front side and the left rear side are provided in the front-rear direction provided close to the left side of the left narrow side Bends inward centering on the first left bending line which extends, and extends in the front-rear direction provided on the right front side and the right rear side in proximity to the right side of the left narrow side Bending inward centering on the first right side bending line, in plan view, a second bending line extending in the width direction on the front side of the position dividing the absorber into three in the front and rear direction, and on the rear side in the width direction Provide the extending third bending line and bend the left front side and the right front side in the bent front side about the second bending line, or the left rear side and the right back After bending the rear side of the folded side inward around the third bending line, the rear side of the folded back side of the left rear side and the right rear side, the third side Since the front side in a state in which the left front side and the right front side are bent inward is bent inward centering on the bending line or inward about the second bending line, the inner surface of the constricted portion A space is formed between the inner surface of the outer portion, and between the outer surface of the outer portion and the inner surface of the front portion, so as to face the front portion, the narrow portion, and the inner side of the surface sheet facing the outer portion. A reduction in the diffusivity of maintaining the shape of the convex portions solution which projects it is possible to prevent me.
A rectangular third left middle polymer part and a third right middle polymer part are provided at portions overlapping with the second bending line on both sides of the constricted part, and the first left bend at the front of the rear side the lines and portions overlapping with the first right fold line, the front side in the second left rear side superimposed portion triangular and the second right rear side superimposed portion provided having a top portion, respectively, and the second left rear side superimposed portion second Since the right rear polymerization portion is extended to the front side relative to the third bending line, a larger space is formed between the inner surface of the constricted portion and the inner surface of the front portion. Therefore, the convex portion protruding inward of the surface sheet facing the front side portion is not pressed by the constriction, and the convex portion protruding inward of the surface sheet facing the constriction portion is pressed by the front side In addition, the shape of the front side portion and the convex portion protruding toward the inside of the surface sheet facing the constriction portion can be further maintained, and the decrease in the liquid diffusivity can be further prevented.

  According to the third means, in addition to the effect of the means described in the first or second aspect, the first left bending line is positioned on the left narrow side and the first right bending line is positioned on the right narrow side Therefore, the left front side of the front side and the left rear side of the rear side are efficiently folded inward along the first left bending line, and the right front side of the front side and the right rear side of the rear side are It can be efficiently bent inward along the first right side bending line.

It is a top view which shows the inner surface of the pad in the unfolded state. It is a top view which shows only the principal part. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is sectional drawing of the convex part of a surface sheet. It is a top view of the convex part of a surface sheet. It is a top view of the outer side absorber in a developed state. It is the top view which bent in the both sides of the outer side absorber. It is a top view which bends the front part of an outside absorption body inside. It is the top view which bent the back side of the outer side absorber inward. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is CC sectional drawing of FIG. FIG. 11 is a cross-sectional view corresponding to the C-C cross-sectional view of FIG. 10 in a state in which the front side portion of the outer absorbent body is bent inward after the rear side portion of the outer absorbent body is bent inward. It is a top view of the outer side absorber of a 2nd embodiment. It is a top view of the outer side absorber of 3rd Embodiment.

  As shown in FIGS. 1 to 4, in the pad according to the first embodiment, from the crotch C, a front body F extending to the front of the crotch C, and a back body B extending to the back of the crotch C It is formed. The dimensions of each part can be appropriately determined. For example, the length L of the pad in the front-rear direction is 350 to 700 mm, the width W in the width direction is 130 to 400 mm, and the length of the front body F in the front-rear direction 50 to 350 mm, The length of the crotch C can be 10 to 150 mm, the length of the back B can be 50 to 350 mm, and the minimum width of the crotch C can be 200 to 260 cm.

  The pads are provided on both sides in the width direction of the liquid-impervious back sheet 21, the liquid-permeable top sheet 22, the absorber 23 disposed between the back sheet 21 and the top sheet 22, and the top sheet 22. It is formed by the solid gathers 24 provided.

  The back sheet 21 is provided outside the absorber 23 so as to slightly protrude from the outer peripheral edge of the absorber 23. As the back sheet 21, in addition to a polyethylene film and the like, a sheet having moisture permeability can be used without impairing the water shielding property from the viewpoint of the prevention of the peeling. The water-impervious and moisture-permeable sheet is, for example, a microporous sheet obtained by melt-kneading an inorganic filler in an olefin resin such as polyethylene or polypropylene to form a sheet, and then stretching the sheet in a uniaxial or biaxial direction. It can be used.

  An exterior sheet 27 made of non-woven fabric is provided outside the back sheet 21 so as to slightly protrude from the outer peripheral edge of the back sheet 21. As the exterior sheet 27, various nonwoven fabrics can be used. As raw material fibers constituting the non-woven fabric, synthetic fibers such as olefins, polyesters, and amides such as polyethylene and polypropylene, regenerated fibers such as rayon and cupra, and natural fibers such as cotton can be used.

  A surface sheet 22 is provided inside the absorber 23. In the first embodiment, the width in the width direction of the surface sheet 22 is formed narrower than the width in the width direction of the absorber 23, but the width in the width direction of the surface sheet 22 It can also be formed wider than the width. As the top sheet 22, a non-woven or non-porous non-woven fabric, a perforated plastic sheet or the like is used. As raw material fibers constituting the non-woven fabric, synthetic fibers such as olefins, polyesters, and amides such as polyethylene and polypropylene, regenerated fibers such as rayon and cupra, and natural fibers such as cotton can be used.

  An intermediate sheet 25 is provided between the top sheet 22 and the absorber 23. As the intermediate sheet 25, a material having low water retention and high liquid permeability, such as various non-woven fabrics and mesh films can be used.

  The solid gathers 24 are provided on both sides in the width direction of the surface sheet 22, and the solid gathers 24 have a fixed part fixed to the side part in the width direction of the exterior sheet 27 and a width from the fixed part to the absorber 23 etc. It is formed of a body extending beyond the sides of the direction to the sides of the inner surface of the topsheet 22. Further, the front and rear end portions of the main body portion are fixed to the top sheet 22, and the center portion of the main body portion in the front and rear direction is not fixed to the top sheet 22 and is erected inward. The fixed part of the solid gather 24 is indicated by hatching in FIG.

  The three-dimensional gather 24 is formed of a double gather sheet 24A and an elongated elastic member 24B extending in the front-rear direction. A plastic sheet or a meltblown non-woven fabric can also be used as the material of the gather sheet 24A, but the non-woven fabric can be water-repellent treated with silicon or the like in terms of the feel to the skin. Further, as the elastic member 24B, styrene rubber, olefin rubber, urethane rubber, ester rubber, polyurethane, polyethylene, polystyrene, styrene butadiene, silicone, polyester etc. Commonly used materials can be used. In addition, as shown in FIG. 4, the elastic member 24 </ b> B causes the solid gather 24 to stand up inward by the stretching force.

  The front sheet 22 and the exterior sheet 27 are fixed at the front and rear ends of the pad to form the end flaps EF, and the gather sheet 24A and the exterior sheet 27 are fixed at both ends in the width direction of the pad. The side flap portion SF is formed. In addition, the absorber 23 does not extend in the end flap part EF and the side flap part SF.

  The absorber 23 is formed of an inner absorber 23A located on the inner side, which is the body surface side of the wearer, and an outer absorber 23B located on the outer side. In addition, the inner absorbent 23A and the outer absorbent 23B are based on a pile of pulp fibers, an aggregate of filaments such as cellulose acetate, or a non-woven fabric, and if necessary, mixed with highly absorbent polymer particles such as particles. And the like can be used. Further, the inner absorbent body 23A and the outer absorbent body 23B are preferably wrapped by a packaging sheet 26 such as crepe paper, in order to prevent the falling of the highly absorbent polymer particles and the like.

  The outer absorbent body 23B is formed of a front side portion 30 located on the front body F of the pad, a constricted portion 31 located on the crotch portion C of the pad, and a rear side portion 32 located on the back body B of the pad. The narrowed portion 31 is formed by cutting out both sides in the width direction located on the front side portion 30 and the rear side portion 32 of the outer side absorber 23B in a substantially trapezoidal shape.

  The minimum width of the constricted portion 31 is formed to be 50 to 65% of the width W 1 of the front side portion 30 and the rear side portion 32. 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 constricted portion 31 is disposed at 10 to 25%, and the rear end of the constricted portion 31 is 40 to 65 It arranges in%, and the part used as the minimum width of neck 31 is arranged in 25-30%.

  The inner absorber 23A is formed in a substantially rectangular shape extending in the front-rear direction with a predetermined interval in the width direction. The length of the inner absorbent body 23A in the front-rear direction is 60 to 90% of the length L1 of the outer absorbent body 23B in the front-rear direction, and the width of the inner absorbent body 23A in the width direction is the width direction of the outer absorbent body 23B 60 to 90% of the width W1. Further, at a portion of the inner side absorber 23A facing the narrow portion 31 of the outer side absorber 23B, a predetermined distance is provided in the width direction, and a predetermined distance is provided in the width direction. A pair of rectangular slits 40 are formed.

  As shown in FIG. 5, in a portion of the surface sheet 22 facing the slits 40 of the inner absorbent body 23A, a large number of convex portions 41 projecting inward are staggered in a longitudinal direction and a width direction at predetermined intervals. It is formed.

  Thereby, as shown in FIG. 6, the urine excreted at the urination position Z on the surface sheet 21 is a convex portion 41 adjacent to the convex portion 41 projecting to the surface sheet 21 rather than flowing in the front-rear direction or the width direction. Since a large amount of urine which has flowed in an oblique direction and urinated at the urination position Z flows into the slits 40 formed on both sides of the urination position Z, the fit of the crotch C is suppressed while the decrease in the absorbable amount is suppressed. It is excellent in quality and also excellent in anti-reverting property.

  The protrusions 41 can be formed by extruding the top sheet 22 from the outside to the inside using embossing. Moreover, the shape of the convex part 41 can be formed in circular shape, elliptical shape, and polygonal shape.

  Next, a method of bending the pad for preventing the crushing of the convex portion 41 protruding to the top sheet 22 will be described. In addition, below, in order to make an understanding easy, the bending method of the outer side absorber 23B which removed the solid gathers 24, the surface sheet 22, the inner side absorber 23A, the back surface sheet 21 grade | etc., Of a pad is demonstrated.

  As shown in FIGS. 7 and 8, the first left bending line 33A extending in the longitudinal direction of the phantom located on the left narrow side 31A forming the left end of the minimum width of the narrow portion 31 of the outer absorber 23B. The left front side portion 30A of the front side portion 30 and the left rear side portion 32A of the rear side portion 32 located on the left side of the first left side bending line 33A are bent inward. Similarly, a first right-side bending line 33B extending on the virtual front and rear direction located on the right side narrow side 31B forming the right side end of the minimum width in the narrow portion 31 of the outer side absorber 23B is the first The right front side 30B of the front side 30 and the right rear side 32B of the rear side 32 located on the right side of the right side folding line 33B are bent inward. The first left bending line 33A and the first right bending line 33B are collectively referred to as a first bending line 33. Further, the first left bending line 33A is set at a position deviated from the left narrow side 31A of the narrow portion 31 to the left narrow side 31A in the width direction of the left front side 30A, and the first right bending line 33B is narrow It can be set to a position deviated from the right side narrow side 31B of the portion 31 to the right side narrow side 31B in the width direction of the right front portion 30B.

  Next, as shown in FIGS. 8 and 9, the second bending line located on the front side of the second and third bending lines 34 and 35 extending in the width direction that divides the outer absorbent body 23B into approximately three in the front-rear direction The front side portion 30 in a state in which the left front side portion 30A and the right front side portion 30B are bent is bent inward toward the center of 34.

  As a result, the outer surface of the left front side portion 30A overlaps the outer surface of the first left rear side portion 36A extending forward of the third bending line 35 in the left rear side portion 32A, and the third fold in the right rear side portion 32B. The outer surface of the right front portion 30B overlaps the outer surface of the first right rear side portion 36B extending forward of the bending line 35, and as shown in FIGS. 11 and 12, the inner surface of the narrow portion 31 in the central portion in the width direction A large space S1 is formed between the inner surfaces of the front side 30. Therefore, the projecting convex portion 41 of the surface sheet 22 positioned at the center in the width direction of the front side portion 30 is not pressed by the inner surface of the constricted portion 31, and the surface sheet 22 positioned at the center in the width direction of the sheet 22. Since the protruding convex portion 41 is not pressed by the inner surface of the front side portion 30, the shape of the convex portion 41 can be maintained. Further, as shown in FIG. 13, since the space S1 is formed in a portion biased to the front side of the constricted portion 31, the convex portion 41 near the urination position Z can be maintained, so the absorbable amount is reduced. Thus, it is possible to maintain the pad which is excellent in the fit of the crotch C and excellent in the anti-reverting property.

  Next, as shown in FIGS. 9 and 10, with respect to the third bending line 35, the left rear side portion 32A and the right rear side portion 32B are folded inward toward the rear side portion 32 in a bent state. Bend.

  Thereby, the outer surface of the second left rear side portion 37A extending to the rear side of the third bending line 35 in the left rear side portion 32A overlaps the outer surface of the front side portion 30, and the outer surface of the front side portion 30 is the right rear side. The outer surface of the outer surface of the second right rear side portion 37B extending rearward of the third bending line 35 in the portion 32B overlaps, and as shown in FIGS. A space S2 is formed between the outer surface and the inner surface of the rear side 32. Therefore, the convex part 41 which the surface sheet 22 located in the center part of the width direction of the back side part 32 can suppress the press by the outer surface of the constriction part 31, and can maintain the shape of the convex part 41. The height of the space S2 in the inner and outer direction is approximately half the height of the space S1 in the inner and outer direction, and the ratio of maintaining the shape of the convex portion 41 is small.

  In the first embodiment, after the left rear side portion 32A and the right rear side portion 32B are bent inward around the third bending line, the left front side portion 30A and the right front side centering on the second bending line The portion 30B can also be bent inward.

  Thereby, as shown in FIG. 14, space S3 is formed in the inner surface of the constriction part 31 and the inner surface of the outer side part 32, and space S4 is formed between the outer surface of the outer side part 32 and the inner surface of the front side part 30. Accordingly, the shapes of the convex portion 41 on the inner surface of the constricted portion 31 and the outer portion 32 and the convex portion 41 on the inner surface of the front side portion 30 can be maintained. The height of the space S3,4 in the inward / outward direction is approximately half of the height in the inward / outward direction of the space S1, and the ratio of maintaining the shape of the convex portion 41 is small.

Second Embodiment
Next, the pad of the second embodiment will be described. The same parts as those of the first embodiment are indicated by the same reference numerals and the description thereof is omitted. As shown in FIG. 15, the front and rear direction end portions of the outer side absorbent body 23B have predetermined intervals in the width direction at positions facing the first left side bending line 33A and the second right side bending line 33B, respectively. The first left front overlapping portion 50A and the first right front overlapping portion 50B are provided. Further, the first left front overlapping portion 50A and the first right front overlapping portion 50B can be formed by increasing the basis weight of the fiber stack of pulp fibers forming the outer absorbent body 23B.

  The second left rear side overlapping portion 51A and the second right rear side opposite side overlapping portion 51B on the substantially triangular shape are respectively provided in portions opposite to the third bending line 35 in both side portions in the width direction of the outer side absorbent body 23B. Further, the front side portion of the second left rear side overlapping portion 51A extends to the front side of the third bending line 35, and the rear side portion of the second left rear side overlapping portion 51A is after the third bending line 35. It extends to the side. Similarly, the front side portion of the second right rear side overlapping portion 51B extends to the front side of the third bending line 35, and the rear side portion of the second right rear side overlapping portion 51B is of the third bending line 35. It extends to the rear side. The second left rear polymerizing portion 51A and the second right rear polymerizing portion 51A can be formed by increasing the basis weight of the fiber stack of pulp fibers forming the outer absorbent body 23B.

  Thereby, the outer side absorber 23B is bent inward toward the first bending line 33, and the front side portion 30 of the outer side absorber 23B is bent inward toward the second bending line 34, and the third bending is performed. The surface located in the central portion of the front side portion 30 by forming the heights inside and outside of the space S1 formed when the rear side portion 32 of the outer absorber 23B is bent inward toward the center of the bending line 35 The shapes of the convex portion 41 of the sheet 22 and the convex portion 41 of the surface sheet 22 positioned at the central portion of the constricted portion 31 can be more maintained.

Third Embodiment
Next, the pad of the third embodiment will be described. The same parts as those of the first embodiment are indicated by the same reference numerals and the description thereof is omitted. As shown in FIG. 16, rectangular portions extending in the front-rear direction at predetermined intervals in the width direction at portions facing the second bending line 34 in both side portions in the width direction of the outer side absorber 23 B A left middle polymerization section 52A and a third right middle polymerization section 52B are provided. Further, the front side portion of the third left middle side overlapping portion 52A extends to the front side of the second bending line 34, and the rear side portion of the third left middle side overlapping portion 52A is after the second bending line 34. It extends to the side. Similarly, the front side portion of the third right middle side overlapping portion 52B extends to the front side of the second bending line 34, and the rear side portion of the third right middle side overlapping portion 52B is of the second bending line 34. It extends to the rear side. Further, the third left middle polymerizing portion 52A and the third right middle polymerizing portion 52B can be formed by increasing the basis weight of the fiber stack of pulp fibers forming the outer absorbent body 23B.

  The second left rear side overlapping portion 51A and the second right rear side opposite side overlapping portion 51B on the substantially triangular shape are respectively provided in portions opposite to the third bending line 35 in both side portions in the width direction of the outer side absorbent body 23B. Further, the front side portion of the second left rear side overlapping portion 51A extends to the front side of the third bending line 35, and the rear side portion of the second left rear side overlapping portion 51A is after the third bending line 35. It extends to the side. Similarly, the front side portion of the second right rear side overlapping portion 51B extends to the front side of the third bending line 35, and the rear side portion of the second right rear side overlapping portion 51B is of the third bending line 35. It extends to the rear side. The second left rear polymerizing portion 51A and the second right rear polymerizing portion 51A can be formed by increasing the basis weight of the fiber stack of pulp fibers forming the outer absorbent body 23B.

  Thereby, the outer side absorber 23B is bent inward toward the first bending line 33, and the front side portion 30 of the outer side absorber 23B is bent inward toward the second bending line 34, and the third bending is performed. The surface located in the central portion of the front side portion 30 by forming the heights inside and outside of the space S1 formed when the rear side portion 32 of the outer absorber 23B is bent inward toward the center of the bending line 35 The shapes of the convex portion 41 of the sheet 22 and the convex portion 41 of the surface sheet 22 positioned at the central portion of the constricted portion 31 can be more maintained.

  The present invention is applicable to an absorbent article.

21 back sheet 22 front sheet 23 absorber 30 front side portion 30A left front side portion 30B right front side portion 31 narrow portion 31A left narrow side 31B right side narrow side 32 rear side 32A left rear side 32B right rear side 33A first left fold Bending line 33B first right bending line 34 second bending line 35 third bending line 36A first left rear side portion 36B first right rear side portion 41 convex portion 50A first left front overlapping portion 50B first right front side Second polymerization section 51A second left rear polymerization section 51B second right rear polymerization section 52A third left middle polymerization section 52B third right middle polymerization section

Claims (3)

In a pad comprising a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorber provided between the top sheet and the back sheet,
Forming a projecting portion on the surface sheet;
The absorbent body is formed by a front side located at the front side in the front-rear direction, a constricted portion located at the center in the front-rear direction, and a rear side located at the rear side in the front-rear direction,
In plan view, the left front side of the front side is extended to the left of the left narrow side of the narrowest width of the narrow side, and the right front side of the front side is the right narrow side of the narrowest portion of the narrow Extend to the right more than
In plan view, the left rear side of the rear side is extended to the left of the left narrow side of the narrowest width of the narrow portion, and the right rear side of the rear side is the narrowest width of the narrow portion Extend to the right of the right-hand side of the
Bending the left front side portion and the left rear side portion inward about a first left bending line extending in the front-rear direction provided close to the left side of the left side narrow side;
Bending the right front side portion and the right rear side portion inward about a first right side bending line extending in the front-rear direction provided close to the right side of the left side narrow side;
In plan view, a second bending line extending in the width direction is provided on the front side of the position where the absorber is divided into three in the front-rear direction, and a third bending line extending in the width direction on the rear side
The front side in a state in which the left front side and the right front side are bent is bent inward around the second bending line, or in a state in which the left rear side and the right rear side are bent After the back side is bent inward around the third bending line,
A state in which the rear side in a state in which the left rear side and the right rear side are bent is bent inward around the third bending line, or a state in which the left front side and the right front side are bent Bending the front side of the inner side about the second bending line,
A rectangular first left front overlapping portion and a first right front overlapping portion are provided in a portion overlapping the first left bending line and the first right bending line in the front portion of the front side portion,
A triangular second left rear side overlapping portion and a second right rear side overlapping portion each having an apex on the front side at a portion overlapping the first left side bending line and the first right side bending line in the front portion of the rear side portion Provide
A pad characterized in that the second left rear side overlapping portion and the second right rear side overlapping portion are respectively extended to the front side relative to the third bending line. In a pad comprising a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorber provided between the top sheet and the back sheet,
Forming a projecting portion on the surface sheet;
The absorbent body is formed by a front side located at the front side in the front-rear direction, a constricted portion located at the center in the front-rear direction, and a rear side located at the rear side in the front-rear direction,
In plan view, the left front side of the front side is extended to the left of the left narrow side of the narrowest width of the narrow side, and the right front side of the front side is the right narrow side of the narrowest portion of the narrow Extend to the right more than
In plan view, the left rear side of the rear side is extended to the left of the left narrow side of the narrowest width of the narrow portion, and the right rear side of the rear side is the narrowest width of the narrow portion Extend to the right of the right-hand side of the
Bending the left front side portion and the left rear side portion inward about a first left bending line extending in the front-rear direction provided close to the left side of the left side narrow side;
Bending the right front side portion and the right rear side portion inward about a first right side bending line extending in the front-rear direction provided close to the right side of the left side narrow side;
In plan view, a second bending line extending in the width direction is provided on the front side of the position where the absorber is divided into three in the front-rear direction, and a third bending line extending in the width direction on the rear side
The front side in a state in which the left front side and the right front side are bent is bent inward around the second bending line, or in a state in which the left rear side and the right rear side are bent After the back side is bent inward around the third bending line,
A state in which the rear side in a state in which the left rear side and the right rear side are bent is bent inward around the third bending line, or a state in which the left front side and the right front side are bent Bending the front side of the inner side about the second bending line,
A rectangular third left middle polymerization portion and a third right middle polymerization portion are provided at portions overlapping with the second bending line in both side portions of the constricted portion,
A triangular second left rear side overlapping portion and a second right rear side overlapping portion each having an apex on the front side at a portion overlapping the first left side bending line and the first right side bending line in the front portion of the rear side portion Provide
A pad characterized in that the second left rear side overlapping portion and the second right rear side overlapping portion are respectively extended to the front side relative to the third bending line.   The pad according to claim 1 or 2, wherein the first left bending line is located on the left side and the first right side bending line is located on the right side.

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