JP6842967B2 - Absorbent article - Google Patents

Description

The present invention relates to an absorbent article that prevents the convex portion of the top sheet from the crotch portion to the buttocks in the package from being crushed by the folded position of the absorber and the shape of the absorber.

Absorbent articles such as urine absorbing pads are generally manufactured and sold in the form of being folded and stored in a package. It may be folded in three in the width direction for storage in the package. For example, the left side of the absorber is centered on the left virtual vertical break line that runs in the front-rear direction (hereinafter also referred to as the vertical direction) that is divided into two in the middle of the width direction (hereinafter also referred to as the horizontal direction) of the left side of the absorber. This is a case where the right side of the absorber is folded inward and divided into two in the middle of the width direction of the right side of the absorber, the right side of the absorber is folded inward with the right virtual vertical section line as the center of the fold, and the two vertical axes are folded in three. .. Further, after folding the front side portion of the absorber inward with the front virtual crossing line that divides the absorber into three in the front-rear direction as the crease center, the absorber is absorbed by the rear virtual crossing line that divides the absorber into three in the front-rear direction as the crease center. This is a case where the rear part of the body is folded inward and then folded in three in the front-back direction (hereinafter, simply referred to as tri-fold). On the other hand, in order to improve the diffusivity of urine and to improve the softness and touch, there is an absorber in which an uneven surface is formed on the top sheet. Therefore, when it is folded and stored in the package as described above, the uneven part of the top sheet is in a state where the convex part is crushed by the storage pressure, so that the diffusivity of urine is lowered, the touch is lowered, and skin troubles due to liquid residue are caused. Will occur. In particular, when the convex part of the crotch part is crushed, the absorption speed is lowered, and when the convex part of the buttocks is crushed, there is a problem that the touch is lowered and skin trouble occurs.

Therefore, when an absorbent article is folded and stored in a package such as a urine absorbing pad, an absorbent article is desired in which the uneven portion of the top sheet can be folded so that the convex portion is not crushed by the storage pressure. There is.

Conventionally, it is a deployable foldable urine absorbing pad that uses a top sheet that has been subjected to uneven processing for an absorbent article (Patent Document 1) and that includes a liquid-permeable top sheet in which a convex portion is formed in this way. Therefore, a urine collecting pad capable of maintaining the shape of a convex portion formed in a predetermined region of the top sheet is known (Patent Document 2).

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

However, even in the conventional product, a portion where the convex portions overlap still remains, and the structure is such that the convex portion is crushed at this portion, and the above problem has not been solved.

Therefore, the main problem of the present invention is an absorbent article that avoids the crushing of the convex portion of the crotch portion due to folding to prevent a decrease in absorption speed, avoids the crushing of the convex portion of the buttocks, and prevents a decrease in touch and skin trouble. Is to provide.

The inventions that solve the above problems are as follows.
In an absorbent article including an exterior body and an absorber provided inside the exterior body, the absorber is placed between a liquid-permeable top sheet, a liquid-impermeable back sheet, and the top sheet and the back sheet. The absorber is formed of an absorbent core composed of pulp fibers and an absorbent polymer provided in the above, and the absorber has a region in which a convex portion is formed on the top sheet, and in the front-rear direction, the front portion of the absorbent core is formed. wherein forming the enlarged portion before extending in the width direction than the middle portion of the absorbent core, the rear portion of the absorbent core, forming an enlargement after extending in the width direction than the middle portion of the absorbent core Then, bulky portions projecting inward are provided on both sides of the rear enlarged portion, and the absorbent core is provided with groove portions extending in the front-rear direction at predetermined intervals in the width direction, and the bulky portion is provided. The height of the portion is formed higher than the height of the groove portion, and both side portions of the absorber are inward along a folding line located between the bulky portion and the groove portion in the width direction and extending in the front-rear direction. It is an absorbent article characterized in that the bulky portion is loosely fitted into the groove portion when folded.

In the absorbent article according to the present invention, the bulky portions provided on both sides of the rear expansion portion support the rear expansion portion surfaces facing each other in the groove, but the groove does not touch the skin, so that the unevenness of the top sheet in the groove is uneven. May be crushed. By loosely fitting the bulky portion into the groove portion in this way, it is possible to maintain a space between the top sheets facing each other at the time of folding with respect to the portion of the surface of the absorbent article outside the groove portion that is not desired to be crushed. Provided are an absorbent article that avoids crushing of a convex portion of a portion, prevents a decrease in absorption speed, avoids crushing of a convex portion of the buttocks, and prevents a decrease in touch and skin trouble.

In another aspect, the present invention provides an absorbent article in which the absorbent article according to the invention is folded. That is, in the absorber in which the bulky portion is loosely fitted into the groove portion and both side portions are folded inward, the front portion of approximately 1/3 of the absorber in the front-rear direction is the bulky portion in the front-rear direction. It is folded to the center along a second folding line located between the front enlarged portions and extends in the width direction, and the rear portion of approximately 1/3 in the front-rear direction is above the bulky portion and the rear portion in the front-rear direction. An absorbent article that is located between the edges and is folded centrally along a third folding line that extends in the width direction.

In another aspect of the invention, the front enlarged portion is further folded into the central portion in approximately 1/3 of the anteroposterior direction of the absorbent article of the previous aspect of the present invention, and the portion that becomes the surface in contact with the front body when mounted is tri-folded. The tip is already folded along the fold line extending in the front-back direction (hereinafter, the fold along the fold line extending in the front-back direction is called C-fold), and faces the bulky part, and the tip is tri-folded in the front-back direction. A certain amount of space is secured between the part and the crease to prevent the convex part of the top sheet from being crushed when the package is stored. Further, the folding facing surfaces of the absorbent article, which is folded in three in the front-rear direction by folding the rear portion to the center portion in about 1/3 of the front-rear direction, are the outer surface of the exterior sheet and the top sheet surface of the front-rear enlarged portion, and the top sheet and the bulky portion are It is possible to avoid crushing the convex part of the top sheet due to the bulky part without directly facing each other.

As described above, according to the present invention, the crushing of the top sheet surface convex portion of the crotch portion is avoided, the absorption speed is prevented from being lowered, the crushing of the top sheet surface convex portion of the buttocks is avoided, the touch is lowered and the skin trouble is caused. Provide an absorbent article that prevents.

It is a plan view (inner surface side) of the absorbent article in the unfolded state of one Embodiment of the pad which is an absorbent article which concerns on this invention. It is a schematic view of the inner surface side plane of the main part of the same product. FIG. 5 is a schematic cross-sectional view taken along the line AA of FIG. It is sectional drawing of BB of FIG. It is a plan view of the absorbent core in the unfolded state of the same product. It is sectional drawing of the convex part of the top sheet of the same product. It is a plan view of the convex part of the top sheet of the same product. It is a perspective schematic view at the time of folding of the same product. FIG. 8 is a cross-sectional view taken along the line ZZ of FIG. It is a schematic view of the inner surface side plane of the main part of the other embodiment of the pad which is an absorbent article which concerns on this invention. FIG. 5 is a cross-sectional view corresponding to FIG. 9 after the pad shown in FIG. 10 is folded. It is a schematic view of the inner surface side plane of the main part of the modified embodiment of one Embodiment shown in FIG.

<One Embodiment>
Hereinafter, the pad 1, which is an embodiment of the absorbent article of the present invention, will be described in detail with reference to the accompanying drawings.
As shown in FIGS. 1 and 2, the pad 1 is an absorbent article including an exterior body 27 and an absorber 23 provided inside the exterior body 27, wherein the absorber 23 is a liquid-permeable top sheet 22. , The liquid-impermeable back sheet 21 and the absorbent core 26 made of pulp fiber and absorbent polymer provided between the top sheet 22 and the back sheet 21 are formed, and the absorber has a convex portion on the top sheet. has a region formed in the longitudinal direction L, the front 30 of the absorbent core 26, forming a pre-enlarged portion 30A, 30B extending in the width direction W than the middle portion of the absorbent core 26 and, wherein the rear 32 of the absorbent core 26, enlarged portion 32A after extending in the width direction W than the middle portion of the absorbent core 26, 32B is formed, on both sides of the rear expansion portion 32, respectively Bulky portions 100A and 100B projecting inward are provided, and the absorbent core 26 is provided with groove portions 40 extending in the front-rear direction L at predetermined intervals in the width direction W, and the bulky portions 100A and 100B are provided. The absorption is formed so that the height is higher than the height of the groove 40, and is located between the bulky portions 100A and 100B and the groove 40 in the width direction W and extends along the folding lines 33A and 33B extending in the front-rear direction. It is an absorbent article characterized in that when both side portions of the sex core 26 are folded inward, the bulky portions 100A and 100B are loosely fitted into the groove portions 40.

The dimensions of each part can be appropriately determined. For example, the length L of the pad 1 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 is 50 to 350 mm. The length of the crotch portion C in the anteroposterior direction can be 10 to 150 mm, the length of the back body B2 in the anteroposterior direction can be 50 to 350 mm, and the minimum width of the crotch portion C can be 200 to 260 cm.

The absorber 23 of the pad 1 includes a liquid-impermeable backsheet 21, a liquid-permeable topsheet 22, an absorbent core 26 arranged between the backsheet 21 and the topsheet 22, and a topsheet 22. It is formed of three-dimensional gathers 24 provided on both sides in the width direction of the.

The back sheet 21 is provided on the outer edge of 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 or the like, a sheet having moisture permeability without impairing water shielding can be used from the viewpoint of preventing stuffiness. This water-impervious / moisture-permeable sheet is 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 the uniaxial or biaxial direction. Can be used.

On the outside of the back sheet 21, an exterior body 27 made of a non-woven fabric is provided so as to slightly protrude from the outer peripheral edge of the back sheet 21. As the exterior body 27, various non-woven fabrics can be used. As the material fiber constituting the non-woven fabric, olefin-based fibers such as polyethylene or polypropylene, synthetic fibers such as polyester-based and amide-based fibers, recycled fibers such as rayon and cupra, and natural fibers such as cotton can be used.

A top sheet 22 is provided on the inner edge of the absorber 23. As the top sheet 22, a perforated or non-perforated non-woven fabric, a perforated plastic sheet, or the like is used. As the material fiber constituting the non-woven fabric, olefin-based fibers such as polyethylene or polypropylene, synthetic fibers such as polyester-based and amide-based fibers, recycled fibers such as rayon and cupra, and natural fibers such as cotton can be used.

Between the topsheet 22 and the absorbent core 26, intermediate sheet 25 is provided. As the intermediate sheet 25, a material having low water retention and high liquid permeability, for example, various non-woven fabrics and mesh films can be used.

Three-dimensional gathers 24 are provided on both sides of the top sheet 22 in the width direction, and the three-dimensional gathers 24 have a fixed portion fixed to the side portion in the width direction of the exterior body 27 and a width from the fixed portion to the absorber 23 and the like. It is formed from a main body portion that extends beyond the side portion in the direction to the side portion of the inner surface of the top sheet 22. Further, the front-rear end portions of the main body portion in the front-rear direction are fixed to the top sheet 22, and the central portion of the main body portion in the front-rear direction is not fixed to the top sheet 22 and stands up inward. In FIG. 1, the fixed portion of the three-dimensional gather 24 is shown by an oblique line.

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. As the material of the gather sheet 24A, a plastic sheet or a melt-blown non-woven fabric can be used, but in terms of the feel to the skin, a water-repellent treatment such as silicon can be used for the non-woven fabric. The elastic member 24B includes styrene rubber, olefin rubber, urethane rubber, ester rubber, polyurethane, polyethylene, polystyrene, styrene butadiene, silicon, polyester, etc., which are formed in a thread shape, a string shape, a strip shape, or the like. Commonly used materials can be used. As shown in FIG. 4, the elastic member 24B causes the three-dimensional gather 24 to stand inward by its elastic force.

At the front-rear end portions of the pad in the front-rear direction, the top sheet 22 and the exterior body 27 are fixed to form the flap portion EF. At both end portions in the width direction of the pad, the gather sheet 24A and the exterior body 27 are fixed to form the side flap portion SF. The absorbent core 26 does not extend to the flap portion EF and the side flap portion SF.

The absorber 23 is an absorbent core 26 made of a liquid-permeable top sheet 22, a liquid-impermeable back sheet 21, and a pulp fiber and an absorbent polymer provided between the top sheet 22 and the back sheet 21. It is formed. Further, the absorbent core 26 is based on a pulp fiber stack, an aggregate of filaments such as cellulose acetate, or a non-woven fabric, and if necessary, highly absorbent polymer particles such as particles are mixed and fixed. Can be used. Further, the absorbent core 26 is preferably wrapped with a wrapping sheet (not shown) such as crepe paper in order to prevent the highly absorbent polymer particles from falling off.

The absorbent core 26 forms the central portion 31 of the shaped constricted crotch portion C of the pad, the front 30 of the absorbent core 26, before extending in the width direction W than the middle portion of the absorbent core 26 enlarged portion 30A, 30B is formed, at the rear 32 of the absorbent core 26, enlarged portion 32A after extending in the width direction W than the middle portion of the absorbent core 26, 32B is formed, the rear expansion portion Bulky portions 100A and 100B protruding inward are provided on both sides of 32A and 32B, respectively, and extend in the front-rear direction L at a predetermined interval in the width direction W on the absorbent core 26. A substantially rectangular groove 40 having long sides in the front-rear direction is formed.

The absorbent core 26 is formed so as to have a constricted shape at the central portion 31 and a substantially trapezoidal shape at the front enlarged portions 30A and 30B. The minimum width of the central portion 31 is formed to be 50 to 65% of the width W1 of the front side portion 30 and the rear side portion 32. Further, when the front end of the absorbent core 26 is 0% and the rear end of the absorbent core 26 is 100%, the front end of the central portion 31 is arranged at 10 to 25%, and the rear end of the central portion 31 is 40 to 65. The portion having the minimum width of the central portion 31 is arranged at 25 to 30%.

As shown in FIG. 6, in one embodiment, a large number of convex portions 41 projecting inward over substantially the entire top sheet are spaced apart from each other in the front-rear direction and the width direction on the surface portion of the absorber 23 in the top sheet 22. It is formed in a staggered pattern separated by. The region where the convex portion is formed on the top sheet does not need to be specified and may be formed over almost the entire area as in the present embodiment, but the convex portion 41 does not necessarily have to be formed over the entire area of the top sheet. , At least the periphery of the groove 40, which will be described in detail later, is preferably included in the region. The convex portion 41 of the top sheet 22 may be formed by any method. For example, a part of the top sheet 22 is joined to the intermediate sheet 25 by pressure welding of an intermittent joining pattern, and the top sheet 22 is added. A concave portion may be formed in the pressure-welded portion and a convex portion 41 may be reflexively formed around the concave portion.

As a result, the top sheet exhibits uneven portions when the absorbent article is formed, and as shown in FIG. 7, the urine urinated at the urination position ZZ on the top sheet 22 flows in the front-back direction or the width direction rather than flowing in the top sheet 22. Most of the urine that flows diagonally between the convex portion 41 protruding toward the surface and the adjacent convex portion 41 and is urinated at the urination position ZZ flows into the grooves 40 formed on both sides of the urination position ZZ, and thus is absorbed. While suppressing a decrease in the possible amount, the fit of the crotch portion C is excellent, and the reversion prevention property is also excellent.

The convex portion 41 can be formed by extruding the top sheet 22 from the outside to the inside using embossing. Further, the shape of the convex portion 41 can be formed into a circular shape, an elliptical shape, or a polygonal shape.

Next, the bulky portion 100 arranged in the absorbent article for preventing the convex portion 41 protruding from the top sheet 22 from being crushed will be described. The bulky portion 100 is drawn as a black-painted rectangular portion in a plan view in FIG. 1 which is a developed view, and is drawn as bulky portions 100A and 100B protruding inward on both side portions of the rear enlarged portion 32, respectively. When the absorbent article 1 is packaged, the absorbent core is located between the bulky portions 100A and 100B and the groove portion 40 in the width direction W and extends along the folding lines 33A and 33B extending in the front-rear direction. Both sides of 26 are folded inward (C fold). In this case, the bulky portions 100A and 100B are loosely fitted into the groove portion 40. After C-folding in the width direction, as shown in FIG. 8, first, the front portion of approximately 1/3 in the front-rear direction including the front expansion portion 32 is the bulky portions 100A and 100B and the front expansion portion in the front-rear direction L. It is folded toward the center along the second folding line 34 located between 32 and extending in the width direction W as shown by the arrow on the back side in FIG. The rear portion is located between the bulky portions 100A and 100B and the rear end in the front-rear direction L and extends in the width direction W along the third folding line 35 in the front-rear direction as shown by the arrow on the front side in FIG. It is folded to the center in L. In this way, it is folded in three at a predetermined position to a length approximately three equal parts in the front-rear direction L, but before that, a folding line extending in the front-rear direction L in the width direction W, two points in FIG. Along the fold lines indicated by the chain lines 33A and 33B, the folds are folded into a C shape in the width direction to a length of approximately three equal parts (the virtual C fold fold line is also referred to as a C fold line below). When one of the width directions is folded along the C-fold fold lines 33A and 33B, the bulky portions 100A and 100B and the groove portions 40A and 40B, which are close to the C-fold line, are loosely fitted to each other and the left and right C-fold lines. Are arranged line-symmetrically. More specifically, the bulky portion 100 is a rectangular parallelepiped, and the groove portion 40 is slightly larger than this rectangular parallelepiped. The groove portions 40A and 40B and the bulky portions 100A and 100B are loosely fitted to each other and are arranged symmetrically with respect to the C folding lines 33A and 33B, respectively. It is installed. Rear enlargement portions 32A and 32B extending in the width direction W from the intermediate portion of the absorbent core 26 are formed, and bulky portions 100A projecting inward on both side portions 32A and 32B of the rear expansion portion 32, respectively. , 100B is provided, and the absorbent core 26 is provided with a groove portion extending in the front-rear direction L at a predetermined interval in the width direction W, and the height of the bulky portions 100A and 100B is set to be higher than the height of the groove portion 40. Both sides of the absorbent core 26 are folded inward along the folding lines 33A and 33B which are formed high and are located between the bulky portions 100A and 100B and the groove portions 40 in the width direction W and extend in the front-rear direction. When folded, the bulky portions 100A and 100B are loosely fitted into the groove portions 40.

At the time of C folding, the groove 40 on the right side in a plan view is loosely fitted when the bulky portion 100 on the right side is folded toward the center in the width direction along the C folding line, and the heights of the bulky portions 100A and 100B are the groove portions 40. When the bulky portion 100 hits the bottom surface of the groove portion 40, it supports both side portions 32A and 32B of the rear enlarged portion 32 on the folding side. In this way, the surfaces of the top sheet 22 facing the groove are supported by the bulky portion and the bottom surface of the groove, and the surfaces of the bulky portions 100A and 100B and the top sheet 22 of the absorber 23 which is not the groove 40 surface are opposed to each other. Since the space was secured even when folded between them and the convex portion 41 was not crushed, urine was urinated to the urination position ZZ on the top sheet 22 along the concave portion formed between the convex portions 41 even after being attached to the human body. Most of the urine flows diagonally in the space formed between the convex portion 41 protruding from the top sheet 22 and the adjacent convex portion 41 rather than flowing in the anteroposterior direction or the width direction, and is urinated at the urination position ZZ. Urine can flow into the grooves 40 formed on both sides of the urination position ZZ.

The shape of the bulky portion 100 can be various as long as it is loosely fitted with the groove portion 40, and in one embodiment, even the bulky portion 100 protruding in a rectangular parallelepiped shape with respect to the linear groove-shaped groove portion 40 has a circular shape. The protruding bulky portion (not shown) or the protruding bulky portion (not shown) may be loosely fitted in any shape.

The arrangement of the groove portions 40 is not limited to the parallel straight line arrangement, and may be arranged in a C shape. The shape of the bulky portion 100 to be loosely fitted is a rectangular parallelepiped shape, which is convenient for manufacturing.

FIG. 9 is a schematic view showing a Z cross section of the pad 1 which is an absorbent article when folded as shown in FIG. FIG. 9 shows a ZZ cross-sectional view after folding of the absorbent core 26 along the folding lines 33A and 33B located between the bulky portion and the groove portion in the width direction and extending in the front-rear direction. It shows how the bulky portion is loosely fitted into the groove portion when both side portions are folded inward. The front magnified portions 30A, 30B of the front portion 30 of the absorbent core 26 folded inward along the folding lines 33A, 33B (not shown) and the rear magnifying portions 32A, 32B of the rear portion 32 are schematically shown and front. The portion 30 is folded in the front-rear direction toward the center along the second folding line (not shown), and the rear portion 32 is folded in the front-rear direction toward the center so as to face the outer surface of the exterior body of the front portion. It is shown conceptually. In this way, when the C-fold is folded, the bulky portion 100 is loosely fitted into the groove portion 40 provided in the absorbent core 26. The groove 40 and the bulky portion 100 are arranged symmetrically with respect to the folding lines 33A and 33B so as to be loosely fitted to each other, and the height of the bulky portion 100 is higher than the height from the bottom surface to the opening of the groove 40. The bulky portion 100 is thickened at the bulky portion so as to be high. As a result, a space is formed between the facing surfaces of the folds other than the loose fitting portion at the time of packaging. Therefore, the convex portion 41 of the top sheet 22 is not crushed at the time of packaging.
(Example of implementation modification)
Note that FIG. 12 further shows an embodiment in which the bulky portions 100C and 100D are provided on both sides of the rear end portions of the rear enlarged portions 32A and 32B. In the embodiment pad 2 shown in FIG. 12, the space can be held up to the back side, and the space between the top sheets 22 facing each other when folded to maintain the uneven shape of the top sheet 22 can be held in a wider area.

<Other Embodiments>
A folded absorbent article according to the present invention of another embodiment is shown in FIG. That is, the absorbent article is the absorbent article shown in FIG. 1 including the outer body 27 and the absorbent body 23 provided inside the outer body 27, and the absorbent core 26 is formed along the folding lines 33A and 33B. Both side portions 30A, 30B, 32A, 32B are folded inward, the bulky portion 100 is loosely fitted into the groove portion 40, and the front portion of approximately 1/3 of the absorber 23 in the front-rear direction is the bulky portion in the front-rear direction L. It is folded to the central portion 31 along the second folding line 34 located between the 100 and the front enlarged portion 30 and extends in the width direction W, and the rear portion 32 of approximately 1/3 in the front-rear direction is in the front-rear direction L. It is an absorbent article that is located between the bulky portion 100 and the rear end and is folded to the central portion 31 along a third folding line 35 extending in the width direction W. In the present embodiment, the center-side end of the bulky portion located behind the constricted portion of the beginning of the absorbent core 26, a distance J between the absorbent core 26 rear is the longitudinal length of the non-constricted portions of the substantially rear However, the bulky portion is arranged so that the entire portion is on the central side in the front-rear direction with respect to the folding line 35.

The absorbent article of another embodiment according to the present invention has the absorbent body as a folded configuration along a C-folded folding line located between the bulky portion and the groove portion in the width direction and extending in the front-rear direction. By folding both sides of the inside and loosely fitting the bulky part into the groove part, the convex part of the part other than the loosely fitted part on the surface of the absorber in contact with the top sheet is not crushed. Fold the front enlarged part to the center in about 1/3 of the front-back direction, and the tri-fold tip of the part that will be in contact with the front body when mounted faces the already C-folded bulky part, and the tri-fold tip in the front-back direction A certain amount of space is secured between the part and the crease to prevent the convex part of the top sheet from being crushed when the package is stored. Further, in the absorbent article in which the rear portion is folded into the central portion in about 1/3 of the front-rear direction and folded in three in the front-rear direction, the last folding facing surface is the outer surface of the exterior sheet and the top sheet surface of the rear expansion portion, and the top sheet and the top sheet. The bulky portion does not directly face each other, and it is possible to avoid crushing the convex portion of the top sheet due to the bulky portion.

In this way, the present invention prevents a decrease in the absorption speed of the absorber, and the convex portion of the absorber surface in contact with the top sheet of the back body B in contact with the top sheet of the portion that is in contact with the front body F when mounted. An absorbent article is provided that avoids crushing of the skin and prevents deterioration of the touch and skin troubles.

The pad 2, which is another embodiment of the absorbent article of the present invention, will be described with reference to the schematic plan view (inner surface side) of the absorbent article in the unfolded state shown in FIG. In another embodiment, there is only one groove 40. With two grooves, the surface area in contact with urine increases and absorption performance increases, and with two grooves, the pad folds into a W shape, so there is the advantage that the mountain part easily fits the urination port. Yes, but as in other embodiments shown in FIG. 10, one may be substantially centered in the width direction.

When there is only one groove, first loosely fit the bulky portion 100A on one side into the groove 40, and then fold the other bulky portion 100B inward so as to overlap the groove 40 position to complete the C-fold. (See FIG. 11). In this case, the bulky part of the surface in contact with the top sheet to be further overlapped is in direct contact with the back sheet, and the uneven surface of the surface in contact with the top sheet is not directly pressed, so that almost the same effect can be obtained, but the groove portion is 2 Since the surface area of the book in contact with urine increases and the absorption performance increases, two grooves are more preferable overall.

The present invention can be used for absorbent articles.

1 Pad 2 Pad 21 backsheet 22 The topsheet 23 absorbent body 26 absorbent core 27 exterior body 30 front 30A before the enlargement portion 30B before the enlargement portion 31 the central portion 32 the rear 32A after enlargement section 32B after the expansion portion 33A fold line 33B fold line 34 Second folding line 35 Third folding line 40 Groove 40A Groove 40B Groove 41 Convex 100 Convex 100A Bulk 100B Bulky L Front-back direction W Width direction

Claims (2)

In an absorbent article having an exterior body and an absorber provided inside the exterior body,
The absorber is formed of a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent core made of pulp fibers and an absorbent polymer provided between the top sheet and the back sheet, and absorbs the absorbent body. The body has an area of convexity on the top sheet,
In the longitudinal direction, a front portion of said absorbent core, said to form an enlarged portion before extending in the width direction than the middle portion of the absorbent core, the rear portion of said absorbent core, an intermediate portion of said absorbent core Forming a posterior enlargement that extends in the width direction
Bulky portions projecting inward are provided on both sides of the rear enlarged portion.
The absorbent core is provided with grooves extending in the front-rear direction at predetermined intervals in the width direction.
The height of the bulky portion is formed higher than the height of the groove portion,
When both sides of the absorber are folded inward along a folding line located between the bulky portion and the groove portion in the width direction and extending in the front-rear direction, the bulky portion is loosely fitted into the groove portion. An absorbent article characterized by the fact that. Both sides of the absorber are folded inward along the folding line, and the bulky portion is loosely fitted into the groove.
Approximately one-third of the front portion of the absorber in the front-rear direction is located between the bulky portion and the front enlargement portion in the front-rear direction and is folded toward the center along a second folding line extending in the width direction. ,
The first aspect of claim 1, wherein the rear portion of approximately 1/3 in the front-rear direction is located between the bulky portion and the rear end in the front-rear direction and is folded toward the center along a third folding line extending in the width direction. Absorbent article.

Images