KR20180000064U - Underpants-type absorbent article - Google Patents

Abstract

An object of the present invention is to provide a pants-type absorbent article in which the leakage of excretion is suppressed while obtaining an underwear-downward appearance.
In the pants-type absorbent article 1, a pair of joining portions 2 for joining the absorbent main body 10 along the longitudinal direction and a pair of belt portions 20 stretching in the transverse direction, And the joining portion 2 is inclined outward in the transverse direction from the side of the waist-hole opening portion BH to the leg-opening portion LH in the longitudinal direction, and between the pair of joining portions 2, The absorbent core 121 has the pressing region 41 and the pressing region 41 has a length in the direction intersecting the water line of the bonding portion 2 and exists on the water line, Is present on the same side as the joining portion with respect to the center line in the transverse direction.

Description

[0001] UNDERPANTS-TYPE ABSORBENT ARTICLE [0002]

The present invention relates to a pants-type absorbent article.

As a pants-like absorbent article, for example, Patent Document 1 discloses an absorbent article having a liquid-retaining absorbent main body, in which abdomen side portions located on the abdomen side of the wearer and both side edges of the abdomen side portions located on the abdomen side are joined, And the leg openings of the leg openings are formed. In this pants-type absorbent article, an elastic member is disposed over the entire periphery of the waist opening to improve fitability, and a plurality of elastic members along the width direction are arranged in the longitudinal direction of the absorbent main body, have.

Patent Document 1: Japanese Patent Application Laid-Open No. 2000-288017

As described above, the pants-type absorbent article in which the elastic member is disposed has less underwear and tends to be inferior in appearance. In order to improve underwear, a pair of stretchable belt portions are arranged on both sides in the transverse direction of the absorbent main body, and a pants-type absorbent member such as an elastic member is not provided between a pair of joint portions in which the absorbent main body and each belt portion are joined. The item is thought. However, in the case of such a pants-type absorbent article, the absorbent main body is pulled by the pair of belt portions, and the absorbent core of the absorbent main body may be wrinkled or twisted. This leads to leakage of excreta.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described conventional problems, and an object thereof is to provide a pants-type absorbent article in which leakage of excretion is suppressed while obtaining an underwear-down appearance.

A main aspect of the present invention to achieve the above object is a pants-type absorbent article having a longitudinal direction, a transverse direction and a longitudinal direction, a waist-hole opening portion and a pair of leg-hole opening portions, the absorbent core including an absorbent core, And a pair of abutment portions which are respectively disposed on both sides of the absorbent main body in the transverse direction and which have a pair of belt portions that extend and contract in the transverse direction and at least the absorbent main body and the pair of belt portions are joined to each other, The joining portions are inclined outward in the transverse direction from the waist-hole opening side toward the leg-hole opening in the longitudinal direction, and the joining portions are inclined outward in the transverse direction from the waist- At least on one side, between the pair of junctions, Wherein the absorbent core has a pressed region in which the density of the absorbent core is higher than that of the surrounding region and which is disturbed in the thickness direction, and wherein the pressed region includes at least one of a repair line to the junction of at least one of the pair of joints Wherein the water absorbent body is present on the same side of the abutting portion with respect to a longitudinal center line extending in the transverse direction by two minutes in the transverse direction, Like absorbent article.

Other features of the present invention will become apparent from the description of the present specification and the accompanying drawings.

INDUSTRIAL APPLICABILITY According to the present invention, it is possible to provide a pants-like absorbent article in which leakage of excretion is suppressed while obtaining an underwear-down appearance.

1 is a schematic perspective view of a pants-type absorbent article 1;
2A is a schematic view of the planar state and the stretched state of the absorbent article 1, and Fig. 2B is a schematic BB sectional view of Fig. 2A.
Fig. 3A is a schematic view of the belt portion 20 of the absorbent article 1 shown in Fig. 2A, which is opened to the outside in the transverse direction by tearing the joint portion 2, and Fig. 3B is a schematic BB sectional view in Fig. 3A.
Fig. 4 is a schematic plan view of the absorbent article 1 in a planar state and in an elongated state and a sectional view of the absorbent core 121. Fig.
5 is a schematic plan view of the absorbent article 1 in a planar state and in an elongated state.
6 is a plan view of the pressing area 40. Fig.

At least the following will become apparent from the description of the present specification and the accompanying drawings.

A pants-like absorbent article having a longitudinal direction, a transverse direction and a longitudinal direction, and having a waist-hole opening and a pair of leg-openings, the absorbent core comprising: an absorbent core along the longitudinal direction; And a pair of joining portions which are arranged on both sides in the transverse direction and which extend and contract in the transverse direction and which at least join the absorbent main body and the pair of belt portions to each other are provided on the front side and the rear side in the front- Wherein the joining portion is inclined outward in the transverse direction from the waist-hole opening side toward the leg-hole opening in the longitudinal direction, and on at least one side of the longitudinal direction, And the absorbent core does not extend or contract in the transverse direction, Wherein the core has a density higher than that of the periphery and has a crushed area in the thickness direction and the crushed area is a region having a length in a direction intersecting with the perpendicular to at least one of the pair of the joints, Wherein the water absorbent article is present on the waterline and is present on the same side of the abutment portion with respect to a longitudinal center line that bisects the absorbent main body in the transverse direction.

According to such a pants-type absorbent article, an underwear-down appearance can be obtained. Further, when the belt portion is pulled up when worn, a force to reduce the width in the direction along the abutment portion acts on the absorbent core, but the pressing region tries to keep the absorbent core in a planar shape against the force. Therefore, wrinkles and twisting occurring in the absorbent core can be reduced, and leakage of the excretion can be suppressed.

The pants-type water absorbent article according to Claim 1, wherein the pinched absorbent article is a pants-like water absorbent article.

According to such a pants-type absorbent article, it is possible to further reduce wrinkles and twists in the absorbent core.

Wherein the pants-type absorbent article is characterized in that the angle between the direction in which the pressed region has the length and the waterline is 45 degrees or more and 135 degrees or less.

According to such a pants-type absorbent article, the pressed area can be effectively opposed to the force of reducing the width, and wrinkles and twisting occurring in the absorbent core can be further reduced.

In this pants-type absorbent article, the waterline is a perpendicular bisector of the abutment portion.

According to such a pants-type absorbent article, the pulling force applied to the absorbent main body from the belt portion at the time of wearing is stronger on the vertical bisecting line of the joined portion, so that the pressed region can be provided in the region where wrinkles or twisting tend to occur . Therefore, wrinkles and twisting occurring in the absorbent core can be reliably reduced.

In this pants-type absorbent article, the absorbent core has a front region, a crotch region, and a back region, which contact the abdomen of the wearer, a crotch region contacting the crotch of the wearer, Wherein the pressing region is continuous from one side to the crotch region or from the at least one of the front region and the back region to the crotch region, Wherein the longitudinally spaced apart longitudinally spaced portions of the crimped region and the separate crimped region adjacent in the longitudinal direction and the longitudinally spaced apart crimped regions adjacent thereto in the longitudinally Is shorter than the length in the longitudinal direction of the pressing area Pants type absorbent article.

According to such a pants-type absorbent article, the pressed area is substantially continuous in the longitudinal direction from the front region or the back region to the crotch region, and the pulling force from the belt portion is likely to be transmitted to the crotch region. Therefore, the crotch region can be brought into close contact with the excretion of the wearer, and leakage of excretion can be further suppressed.

In the pants-type absorbent article, the absorbent core has a front region, a crotch region, and a back region contacting the abdomen of the wearer, a crotch region contacting the crotch of the wearer, and a back region contacting the wearer's buttocks. And the pressing region is not provided in the back region.

According to such a pants-type absorbent article, the rigidity of the back region can be lowered, and the back region can be easily deformed in accordance with the wearer's buttocks, resulting in increased fitability. Therefore, the leakage of the excrement can be further suppressed.

The pants-type absorbent article according to claim 1, wherein the absorbent core has a basis weight lower than that of the crotch region.

According to such a pants-type absorbent article, the rigidity of the back region can be lowered, and the back region can be fitted to the wearer's buttocks. Therefore, the leakage of the excrement can be further suppressed.

The pants-type absorbent article according to claim 1, wherein the absorbent core does not exist above the center position of the joining portion in the longitudinal direction.

According to such a pants-type absorbent article, the swelling caused by the absorbent core can be reduced, and the underwear-down appearance can be obtained.

Wherein an angle between the longitudinal center line and the abutment on the front side is larger than an angle formed by the longitudinal center line and the abutment on the rear side.

According to such a pants-type absorbent article, it is possible to prevent the belt portion from inhibiting the movement of the wearer's legs. In addition, since the absorbent article is pulled up to the vicinity of the toe portion above the buttocks, the fitability is increased, and leakage of the excreta can be suppressed.

=== Basic structure of the absorbent article (1) ===

1 is a schematic perspective view of a pants-type absorbent article 1 (hereinafter referred to as an absorbent article 1). 2A is a schematic view of a planar state and a stretched state in which the longitudinal direction of the absorbent main body 10 and the longitudinal direction of the belt portion 20 are matched in the absorbent article 1. 2B is a schematic B-B cross-sectional view in Fig. 2A. 3A is a schematic view of a state in which the abutting portion 2 of the absorbent article 1 in a planar state of Fig. 2A is torn to open the belt portion 20 to the outside in the transverse direction. 3B is a schematic B-B cross-sectional view in Fig. 3A. 2B and 3B show the adhesive or the welded portion for bonding the members adjacent in the thickness direction. 4 is a schematic view of the absorbent article 1 in a planar state and in a stretched state.

The absorbent article 1 can be used, for example, as a sanitary article, a diaper for adults and infants, and has a longitudinal direction, a transverse direction and a longitudinal direction orthogonal to each other in a pants-like state shown in Fig. Further, the absorbent article 1 is formed with a waist-opening BH and a pair of leg-openings LH. In the longitudinal direction, the waist-hole BH side is set as the upper side, and the side corresponding to the crotch of the wearer is set as the lower side. The side corresponding to the wearer's abdomen side is set as the front side and the side corresponding to the wearer's side is set as the back side. In addition, the absorbent article 1 has a thickness direction, a side in contact with the wearer in the thickness direction is the skin side, and the opposite side is the non-skin side.

The absorbent article 1 comprises a water absorbent body 10 folded in two in the longitudinal direction at substantially the center in the longitudinal direction along the longitudinal direction and a water absorbent body 10 folded on both sides in the transverse direction of the absorbent body 10 And a pair of leg gathers 30 disposed on both sides of the absorbent main body 10 in the transverse direction along the longitudinal direction of the absorbent main body 10, . In the following description, the first belt portion 21 on one side of the pair of belt portions 20 in the transverse direction and the second belt portion 22 on the other side in the transverse direction are also called. One of the pair of leg gathers 30 on the one side in the transverse direction is also referred to as a first leg gathering portion 31 and the other side of the lateral direction is referred to as a second leg gathering portion 32. [

The absorbent article 1 is provided with a pair of joining portions 2 for joining the pair of belt portions 20 to the absorbent main body 10 and the pair of leg gathers 30, Are provided on the front side and the rear side, respectively. The joining portion 2 is inclined outward in the transverse direction from the side of the waist-hole opening BH to the side of the leg-openings LH in the longitudinal direction.

Specifically, in the front and rear first joining portions 2A, on one side in the longitudinal direction of the absorbent main body 10 and on one side in the transverse direction and in the longitudinal upper end portion of the first leg gathers 31, And an inner end portion in the transverse direction of one belt portion 21 is joined. In the front and rear second joining portions 2B, on the other side of the absorbent main body 10 in the longitudinal direction and on the other side in the transverse direction and the upper end in the longitudinal direction of the second leg gathering portion 32, And an inner end in the transverse direction of the portion 22 is joined.

As a method for forming the joint portion 2, for example, welding treatment such as heat seal or ultrasonic sealing, and bonding treatment with an adhesive can be exemplified. In the following description, the first bonding portion 2A on one side in the transverse direction and the second bonding portion 2B on the other side in the transverse direction among the pair of bonding portions 2 are also called. It is preferable that the abutment portion 2 is formed on the non-skin side surface and does not reach the leg-hole opening portion LH. By doing so, it is possible to prevent the hard joining portion 2 from contacting the wearer as compared with other portions, and the wearing feeling is improved.

The longitudinally upper end 2A1 of the first joint portion 2A and the longitudinally upper end 2B1 of the second joint portion 2B are laterally spaced. Therefore, in the absorbent article 1 in a pants-like state, the waist-hole BH is formed by the upper end in the longitudinal direction of the pair of belt portions 20 and the upper end in the longitudinal direction of the absorbent main body 10 . The leg-hole opening portion LH is formed by the lower end portion in the longitudinal direction of the belt portion 20 and the lateral side portion of the leg gathers portion 30 in the transverse direction. A portion of the belt portion 20 which becomes the waist opening BH is folded back a plurality of times as shown in Fig. 2B, and the structure is so rigid that the burden on the skin of the wearer is reduced.

The absorbent article 1 is in a planar state shown in Fig. 2A at the final stage of its manufacturing process. In the planar state, the longitudinal direction of the absorbent main body 10, the pair of belt portions 20, and the pair of leg gathers 30 are aligned. Further, a pair of belt portions 20 are superimposed on the absorbent main body 10 and the pair of leg gathering portions 30 so that the skin side faces of the belt main body 10 face each other. In the absorbent article 1 in this planar state, each end 20a of the inner side of the pair of belt portions 20 is stretched outward in the transverse direction, while the absorbent main body 10 is stretched substantially in the longitudinal direction The absorbent article 1 becomes the pants-like state of Fig.

In the planar state, the absorbent article 1 is stretched in the longitudinal direction. This "stretched state" is a state in which the absorbent article 1 is stretched in the longitudinal direction (longitudinal direction) against the contractive force by each elastic member (the elastic elastic member 21 of the belt portion 20, etc., So that the absorbent article 1 is stretched to such an extent that substantially no wrinkles or gathers can be seen in the portion where each elastic member is disposed. That is to say, until the dimensions of the members (such as the two sheets 51 in the sheet member 50 described later) constituting the absorbent article 1 are equal to or close to the dimensions of the members, .

≪ Absorbent main body 10 >

In the absorbent main body 10, the topsheet 11, the absorbent body 12, the backsheet 13, and the outer sheet 14 are stacked in this order from the skin side in the thickness direction. A pair of end sheets 15 are provided on both sides in the longitudinal direction of the absorbent main body 10 (upper end in the longitudinal direction in the pants-like state) on the skin side in the thickness direction than the absorbent body 12.

The top sheet 11 may be a liquid-permeable sheet, and an air-through nonwoven fabric or the like can be exemplified. The backsheet 13 may be a liquid-impermeable sheet, and examples thereof include a polyethylene film and a polypropylene film. The topsheet 11 and the backsheet 13 are sized so as to cover the entire absorbent body 12. In the top sheet 11 of the present embodiment, both side portions in the transverse direction are folded toward the side of the non-skin side of the absorbent body 12. [ The outer sheet 14 and the end sheet 15 may be either a liquid-permeable sheet or a liquid-impervious sheet, and preferably a flexible sheet such as a nonwoven fabric.

The absorbent core 12 includes an absorbent core 121 for absorbing liquid and a core wrap sheet 122 for covering the outer peripheral surface of the absorbent core 121. [ The absorbent core 121 is formed of a liquid absorbent material in a predetermined shape. In the present embodiment, the absorbent core 121 has a substantially rectangular shape in which both ends in the longitudinal direction are curved. As the liquid absorbent material, a liquid absorbent fiber such as pulp fiber or the like may contain a super absorbent polymer (so-called SAP) or the like. As the core wrap sheet 122, liquid-permeable sheets such as tissue paper and nonwoven fabric can be exemplified. Further, the core wrap sheet 122 may be omitted.

Further, the absorbent main body 10 (the absorbent core 121) has a plurality of pressed areas 40. [ The pressing region 40 is a region in which at least a part of the absorbent core 121 is pressed (embossed) in the thickness direction, and the density of the absorbent core 121 is higher than that of the surrounding region, Area. More specifically, as the pressed area 40, the entire thickness direction of the topsheet 11 and the absorbent body 12 is pressed from the skin side in the thickness direction, the thickness direction of the topsheet 11 and the absorbent body 12 And a form in which the back sheet 13 and the absorber 12 are pressed from the non-skin side in the thickness direction.

Further, the comparison of the density of the pressurized region 40 and the surrounding area may be performed by a well-known method. For example, the cross section of the absorbent core 121 cut in the thickness direction is photographed by an electron microscope or the like, and the difference in density between the pressed region 40 and the surrounding region is visually compared, or the number of liquid absorbent materials You can count and compare. In addition, the basis weight (g / cm 2) is calculated by cutting the pressed region 40 and the surrounding region from the absorbent core 121 and dividing the mass of each region by the area, and dividing the basis weight by the thickness, g / cm < 3 >) may be calculated and compared.

≪ Belt portion 20 and leg gathering portion 30 >

In the absorbent article 1 in a pants-like state, the belt portion 20 extends and contracts in the lateral direction, and the leg gathers 30 extend and contract in the longitudinal direction. Therefore, the absorbent article 1 fits around the wearer's waist or leg. Therefore, in the belt portion 20, a plurality of yarn-like elastic members 23 along the longitudinal direction (substantially transverse direction) of the belt portion 20 are arranged in the width direction (substantially vertical direction) of the belt portion 20 . In the leg gathers 30, a plurality of (here, two) elastic elastic members 33 along the longitudinal direction are arranged in the lateral direction. A sheet-like elastic member 52 is disposed at a portion of the belt portion 20 and the leg gathering portion 30 along the leg-hole opening LH.

The thread-like elastic members 23 and 33 may be yarn rubber or the like. As the sheet-like elastic member 52, a so-called gear drawing process is applied to a nonwoven fabric having elastomeric fibers such as polyurethane elastomer and the like and thermoplastic resin fibers such as a polyolefin resin having substantially inelastic properties, Non-woven fabric, and the like.

In the present embodiment, as shown in Fig. 3, the belt portion 20 and the leg gathers 30 are formed of the same sheet member 50. Fig. In the sheet member 50, the belt-like elastic members 23 and 33 and the sheet-like elastic member 52 of the belt portion 20 and the leg gathers 30 are held between the two sheets 51 in a stretched state Is fixed. The two sheets 51 are preferably a flexible sheet such as a nonwoven fabric. A hole LH for a leg-hole opening is formed in a portion of the sheet member 50 where the sheet-like elastic member 52 is present.

In the process of manufacturing the absorbent article 1, a pair of sheet members 50 are disposed on both sides of the absorbent main body 10 in the transverse direction. More specifically, the inner ends of the respective sheet members 50 in the transverse direction are interposed between the absorbent body 12 and the back sheet 13 and joined thereto. The folding line FL passing through the hole LH for the leg-hole opening along the longitudinal direction of the sheet member 50 causes the sheet member 50 to be folded back toward the skin side of the absorbent main body 10 All. A portion of the sheet member 50 that overlaps the absorbent main body 10 in the thickness direction with the fold line FL as a boundary becomes the belt portion 20 and a portion arranged in the transverse direction with the absorbent main body 10 becomes a belt- (30). By forming the pair of bonding portions 2, the folded state of the sheet member 50 is fixed, and the absorbent article 1 in the planar state shown in Fig. 2 is formed. Further, the belt portion 20 and the leg gathers 30 may be formed of separate members.

=== Compression area (40) ===

4 and 5 are schematic plan views of the absorbent article 1 in a planar state and in an elongated state. 6 is a plan view of the pressing area 40. Fig. 4 is a sectional view showing the thickness (basis weight) of the absorbent core 121 on the left and lower sides of the absorbent article 1.

4, the absorbent core 121 includes a front region 121A contacting the abdomen of the wearer, a crotch region 121B contacting the crotch of the wearer, and a back region 121C contacting the hip of the wearer . In the crotch region 121B, both side portions in the transverse direction of the absorbent core 121 are slightly constricted toward the inside in the transverse direction. As described above, the absorbent main body 10 has a plurality of pressed regions 40 to which at least a part of the absorbent core 121 in the thickness direction is squeezed. The plurality of pressed regions 40 are symmetrical with respect to the longitudinal center line CL1 which is two minutes in the transverse direction of the absorbent main body 10. [

Specifically, the front region 121A of the absorbent core 121 is provided with a first compression region 41 which is substantially circular and located at the center in the transverse direction from the front side in the longitudinal direction, A pair of second squeezed areas 42 and a pair of third squeezed areas 43 arranged at intervals in the direction of the pair of third squeezed areas 43 and a fourth squeezed area 44 ). The crotch region 121B is provided with a pair of fifth pressed regions 45 that extend in the longitudinal direction over substantially the entire crotch region 121B and are arranged at intervals in the transverse direction. A pair of sixth pressed regions 46, a pair of seventh pressed regions 47, and a pair of eighth pressed regions 46, which extend in the longitudinal direction and are arranged at intervals in the transverse direction, And a pressing region 48 is provided.

The compression region 40 may be a groove-like region in which the entire region of the region is recessed, or a plurality of recesses may be intermittently arranged in the recessed region. In the pressing region 40 of the present embodiment, as shown in Fig. 6, a plurality of concave portions 40A having a square planar shape are arranged. The plane shape of the concave portion 40A may be a shape other than a square. The pressing region 40 may have a concave portion 40A having a different planar shape. Further, concave portions 40A having different depths may be mixed. The intervals of the concave portions 40A in the pressed region 40 (intervals between the outer shapes) are set at narrow intervals such that the pressed regions 40 are visible in one pattern. Specifically, it is assumed that the interval (for example, d2 in FIG. 6) of the concave portion 40A is narrower than the maximum length (for example, d1 in FIG. 6) of the maximum concave portion 40A of the pressing region 40.

However, in the pants-type absorbent article 1, in particular, when it is used as a diaper for men or as a diaper for men's wear, which is a women's article, an underwear-down appearance is required. As described above, in the absorbent article 1, the pair of joint portions 2 are inclined outward in the transverse direction from the side of the waist-opening BH to the side of the leg-openings LH in the longitudinal direction have. Therefore, the absorbent article 1 has an underwear-down appearance in comparison with, for example, a case where the joint portion extends along the longitudinal direction. In addition, no elastic member is disposed along the transverse direction between the pair of joint portions 2, and the pair of joint portions 2 do not extend and contract in the transverse direction. Therefore, the absorbent article 1 has an underwear-down appearance compared with the case where the elastic elastic members are arranged over the entire circumference of the waist, for example.

Further, by not stretching the pair of joining portions 2 in the transverse direction, the stretching and shrinking region is reduced and the tightening feeling is suppressed. Further, movement of the buttocks or legs moving back and forth of the absorbent article 1 during walking or the like is not hampered by the elastic members. Therefore, the absorbency of the absorbent article 1 is also improved.

On the other hand, when the absorbent article 1 is worn, the pair of belt portions 20 are respectively pulled outward in the transverse direction and obliquely upward. Accordingly, the absorbent main body 10 is pulled out in the transverse direction both outward through the pair of joints 2 and in the direction perpendicular to the joints 2. [ 5, a force F for reducing the width in the direction along the joining portion 2 acts on the absorbent main body 10 between the pair of joining portions 2 and in the vicinity thereof. However, in the absorbent article 1, no elastic member is provided to closely contact the wearer with the absorbent main body 10 between the pair of abutment portions 2. Therefore, wrinkles and twisting tend to occur between the pair of joining portions 2 and the absorbent main body 10 in the vicinity thereof due to the force F to be reduced in width. For example, wrinkles along the transverse direction and wrinkles along the direction orthogonal to the joint portion 2 are liable to occur. In addition, when the absorbent core (121) is wrinkled or twisted particularly in the absorbent main body (10), the excreta tend to leak.

Thus, in the absorbent article 1, as the pressed region 40 having a length in the direction intersecting the vertical bisector Lb of at least one of the pair of bonded portions 2, The absorbent core 121 has a pressed region 40 existing on the line Lb and existing on the same side of the longitudinal center line CL1 as the lateral side of the joint portion 2. [ In order to distinguish such a squeezed area 40 (squeezed area in the present invention) from another squeezed area 40, it is also referred to as a "main squeezed area" in the following description. 5) and a point on the other end (for example, 2A2 in Fig. 5) of the joint portion 2 is connected to the joint portion 2 The vertical bisecting line of the line may be the vertical bisecting line Lb of the joint 2. [

In the present embodiment, the first pressing region 41 corresponds to the main pressing region. Specifically, as shown in Fig. 6, the first compression region 41 is formed on the front side in the front-rear direction (longitudinal direction) and the vertical bisector Lb1 of the front side first bonding portion 2A Has a length d3 in an intersecting direction D1 and is also present on the vertical bisector Lb1. The portion having the length d3 in the direction D1 intersecting with the vertical bisector Lb1 in the first pressing region 41 is formed so as to extend from the first joining portion 2A to the side Lt; / RTI > direction. The first pressing area 41 has a length d4 in a direction intersecting the vertical bisector Lb2 of the front second joining part 2B and a part having the length d4 is perpendicular Is present on the bisector Lb2 and on the same side as the second junction 2B in the transverse direction with respect to the longitudinal center line CL1.

The portion of the absorbent core 121 provided with the pressing region 40 has a high rigidity and is difficult to deform. The absorbent core 121 in which the force F to be reduced in width along the joining portion 2 acts acts on the absorbent core 121 in the direction along or near the joining portion 2, The main pressing region having a length in the direction intersecting with the perpendicular bisector Lb of the first and second parallel lines Lb and 2 may be provided. By doing so, the main pressing region (the first pressing region 41 in this embodiment) tends to keep the absorbent core 121 in a planar shape against the force F to be reduced in width. Therefore, wrinkles and twisting occurring between the pair of joining portions 2 and the absorbent core 121 in the vicinity thereof can be reduced. As a result, leakage of the excrement can be suppressed. In addition, the wearing comfort and the appearance of the wearer are improved.

The pulling time of the absorbent article 1 and the pulling force from the belt portion 20 are applied to the absorbent main body 10 from the center of the joined portion 2 to form the vertical bisectors Lb ). ≪ / RTI > Therefore, wrinkles and twists of the absorbent core 121 can be more surely relieved by the presence of the pressing region 40 (the first pressing region 41) on the vertical bisector Lb. That is, the pressing region 40 is provided on the vertical bisector Lb or in the vicinity of the vertical bisector Lb where wrinkles and twisting are liable to occur, so that the planar shape of the absorbent core 121 is more easily maintained.

The tensile force from the first belt portion 21 through the first joint portion 2A mainly acts on the absorbent core 121 on the first joint portion 2A side with respect to the longitudinal centerline CL1, The tensile force from the second belt portion 22 through the joint portion 2B mainly acts on the absorbent core 121 on the second joint portion 2B side with respect to the longitudinal centerline CL1. Therefore, the main pressing region such as having a length in the direction intersecting with the perpendicular bisector Lb of a certain joint portion 2 is formed on the same side of the joining portion 2 as the longitudinal center line CL1 .

The length of the pressing region 40 in the direction intersecting the vertical bisector Lb of the bonding portion 2 may be the width of the pressing region 40. The length of the pressing region 40 in the direction in which the pressing region 40 extends Length. For example, a length in a direction in which a plurality of recesses 40A of the pressing region 40 are arranged and a length in a direction in which the groove of the pressing region 40 extends. By doing so, the squeeze region 40 exists over a wide range in the direction intersecting the vertical bisector Lb, so that the planar shape of the absorbent core 121 is more easily maintained. Therefore, the wrinkle and twist of the absorbent core 121 can be further reduced.

The main pressing region for reducing the wrinkles on the first bonding portion 2A side may be different from the main pressing region for reducing the wrinkles on the second bonding portion 2B side. For example, the second squeezed area 42 on one side in the transverse direction has a length in the direction intersecting the vertical bisectors Lb1 of the first abutment 2A, and the second squeezed area 42 on the other side in the transverse direction. Has a length in the direction intersecting the vertical bisector Lb2 of the second joint portion 2B. Although not shown, the vertical bisector Lb1 passes through the second squeezed area 42 on one side in the transverse direction and the vertical bisector Lb2 passes through the second squeezed area 42 on the other side in the transverse direction As shown in Fig.

The plurality of compression regions 40 of the absorbent core 121 may be asymmetric with respect to the longitudinal center line CL1. Therefore, although the absorbent core 121 has a main pressing area for reducing the wrinkles on the side of one of the pair of abutting parts 2, the wrinkle on the other side of the abutting part 2 is reduced Or may not have a main pressing area.

The presence of the main pressing region on the vertical bisector Lb of the abutment portion 2 may be such that the end of the main pressing region is located on the vertical bisector Lb. However, it is preferable that the main pressing region crosses the vertical bisector Lb. 6, the portion of the first compression region 41 having the length d3 in the direction intersecting the vertical bisectors Lb1 of the first joint portion 2A is divided into the vertical 2 And intersects the even line Lb1. The portion of the first pressed region 41 having the length d4 in the direction intersecting the vertical bisector Lb2 of the second bonded portion 2B crosses the vertical bisector Lb2. By doing so, the main pressing region is provided over a wide range of the region where the tensile force from the belt portion 2 strongly acts, that is, the portion where wrinkles and twisting are likely to occur, so that the planar shape of the absorbent core 121 is easily maintained. Therefore, wrinkles and twisting occurring in the absorbent core 121 can be further reduced.

It is preferable that the angle formed between the direction perpendicular to the vertical bisector Lb and the vertical bisector Lb is 45 degrees or more and 135 degrees or less. In this embodiment, as shown in Fig. 6, for example, the angle formed by the direction D1 having the length d3 and the vertical bisector Lb1 of the first bonding portion 2A 1) is 45 degrees or more and 135 degrees or less. Since the force F to be reduced in width along the joining portion 2 acts on the absorbent core 121, the main pressing region (the first pressing region 41) is formed in the direction along or close to the joining portion 2, May extend and have a length. Therefore, in the direction in which the angle formed by the vertical bisector Lb of the joint portion 2 is close to 90 degrees, that is, the angle formed by the vertical bisector Lb is 45 degrees or more and 135 degrees or less, The pressing region may extend and have a length. By doing so, the main pressing area can be reliably and efficiently opposed to the force F to be reduced in width. Therefore, wrinkles and twisting occurring in the absorbent core 121 can be further reduced.

Further, the straight main pressing region extending in the direction along the joining portion 2 can most effectively reduce wrinkles and twist of the absorbent core 121. [ However, in many cases, a curved contact area 40 having a high design property is employed, like the contact area 40 of the present embodiment. When the main pressing region is curved, the main pressing region has a length in a plurality of directions. Therefore, at least one direction among the plurality of directions in which the main pressing region has the length and the angle formed by the vertical bisector Lb may be 45 degrees or more and 135 degrees. The direction in which the main pressing region has a length may be, for example, a direction orthogonal to the width direction at a certain portion of the main pressing region, a direction connecting one end in the transverse direction of the main pressing region, A direction along an approximate straight line, and the like.

In addition, the absorbent core 121 may not have the squeezed area 40 other than the first squeezed area 41 as the main squeezed area.

The second pressing region 42 and the third pressing region 43 between the pair of joining portions 2 and in the vicinity thereof are arranged in such a manner that the length (in the direction of intersection) with the vertical bisector Lb of the joining portion 2 6, d5, d6). Therefore, the pressed region 40 exists over a wide range in the direction intersecting the vertical bisector Lb, and the planar shape of the absorbent core 121 is easily maintained. Therefore, wrinkles and twisting occurring in the absorbent core 121 can be further reduced.

The middle portion of the absorbent core 121 in the transverse direction can be easily deformed convexly toward the wearer by the pair of fifth to eighth pressed regions 45 to 48 and can be brought into close contact with the cleaved portion of the wearer's orgasm easy. Therefore, the leakage of the excretion can be further suppressed.

6) and a tangent line (not shown) between the first pressing region 41 and the second pressing region 42 and a tangent line (not shown) between the second pressing region 42 and the third pressing region 43 (For example,? 2 in FIG. 6) formed between the vertical bisector Lb of the joint portion 2 is preferably 45 degrees or more and 135 degrees or less. In other words, a plurality of the pressing regions 40 may be arranged along a direction along or near the joining portion 2, which is a direction in which the width is to be reduced. By doing so, it is possible to resist the force F to be narrowed down by the plurality of pressed regions 40, so that wrinkles and twisting occurring in the absorbent core 121 can be further reduced.

Although not shown, the absorbent article 1 may have a main pressing region (the first pressing region 41 in this embodiment). That is to say, the pressing region 40 having a length in the direction intersecting with the perpendicular to at least one of the joining portions 2 of the pair of joining portions 2 exists on the water line and is located on the vertical center line CL1 And a compression region 40 (second compression region 42 or third compression region 43 in the present embodiment, etc.) existing on the same side of the bonding portion 2 in the transverse direction at least at the absorbent core 121 ). The waterline may be a waterline from any position on the joint 2.

Even in this case, the force F that is to be reduced in width along the joining portion 2 can be reduced in the direction along or near the joining portion 2, that is, in the direction intersecting the water line to the joining portion 2 The absorbent core 121 is likely to be held in a planar shape. Therefore, wrinkles and twisting occurring between the pair of joining portions 2 and the absorbent core 121 in the vicinity thereof can be reduced. Also in this case, when the pressure area 40 intersects the water line, or the angle formed by the water line and the direction in which the pressure area 40 has a length is 45 degrees or more and 135 degrees or less, Therefore, it is more preferable.

In addition, when the absorbent article 1 is worn, the hands are put from the lower end side of the belt section 20 so that the absorbent main body 10 is fit to the crotch of the wearer after the absorbent article 1 is raised to some extent, The article 1 is often raised further. In this case, a force is applied from the lower end portion of the joint portion 2, and the wrinkle or twist of the absorbent core 121 is apt to occur on the repaired portion of the lower end portion of the joint portion 2. Therefore, a pressing region (the third pressing region 43 or the fifth pressing region 45 in this embodiment) having a length in the direction intersecting the waterline is formed on the water line from the lower end portion of the joint portion 2 And the absorbent core 121 may be provided. By doing so, wrinkles and twisting occurring in the absorbent core 121 can be reliably reduced.

In the absorbent article 1 in a pants-like state, it is preferable that the absorbent core 121 does not exist above the center position of the joining portion 2 in the longitudinal direction. In the present embodiment, as shown in Fig. 5, the length L2 of the first joint portion 2A is set to be the length d7 downward from the upper end 2A1 of the first joint portion 2A, The upper end 121a of the absorbent core 121 is positioned below the center position CL2 on the upper side by the length d7. The absorbent core 121 becomes thick, and the expansion of the absorbent core 121 becomes visible even from the outside. Therefore, the underwear-down appearance can be obtained by not providing the absorbent core 121 longer than necessary.

It is preferable that the absorbent core 121 is wrinkled or twisted as compared with the region 10A formed only of the sheet above the absorbent core 121 so that the leakage of the excretion and the deterioration . Therefore, as described above, the area where the absorbent core 121 is present between the pair of joining portions 2 and in the vicinity thereof can be made as small as possible without making the absorbent core 121 longer than necessary . By doing so, it is possible to reduce the area of the absorbent core 121 where wrinkles and twisting tend to occur.

The corrugation or twist in the absorbent core 121 can be reduced in the main pressing area (first pressing area 41) as described above, but the main pressing area is not present in the area 10A composed of the sheet only Do not. However, since the interval between the pair of joining portions 2 becomes narrower toward the upper side in the longitudinal direction, regular wrinkles (wrinkles having the same height and the like) are generated in the region 10A composed of only the sheet easy. Therefore, the area 10A composed of only the seat and the close contact area of the wearer are secured, and the leakage of the excretion is suppressed. In the absorbent main body 10 of the present embodiment, an end sheet 15 is provided in a region 10A composed of an upper end portion in the longitudinal direction, i.e., only a sheet. Therefore, the rigidity of the region 10A composed of only the sheet is increased, and occurrence of wrinkles and twisting can be reduced.

It is sufficient that the main pressing region is provided on at least one side in the longitudinal direction of the absorbent article 1. In this embodiment, as shown in Fig. 4, the first pressing area 41, which is the main pressing area, is provided on the front area 121A (front side) of the absorbent core 121, A compression region is not provided. Therefore, in the back road region 121C, the area where the pressed region 40 is present can be made small, and the rigidity of the back road region 121C can be made low. Therefore, the backward region 121C is easily deformed in accordance with the wearer's buttocks, the fitability is increased, and the backward leakage of the excretion can be suppressed.

Further, when the absorbent article 1 is worn, the front side is more likely to be grasped than the rear side in the front-rear direction. Therefore, the absorbent core 121 on the rear side as compared with the front side is less susceptible to the tensile force from the belt portion 20, and wrinkles and warpage between the pair of joint portions 2 and the vicinity thereof are less likely to occur. Therefore, even if the main pressing region is not provided in the back region 121C, there is little concern about leakage of the excrement due to wrinkling or twisting of the absorbent core 121. [

However, the present invention is not limited to this, and the main pressing region may be provided in the back region 121C. It is also possible to provide the main pressing region only in the back region 121C without providing the main pressing region (first pressing region 41) in the front region 121A.

4 shows a sectional view of the absorbent core 121 at the longitudinal center CL1 on the left side of the absorbent article 1 and shows a cross section of the absorbent core 121 on the lower side of the absorbent article 1 in the crotch region 121B Sectional view of the absorbent core 121. Fig. As shown in the figure, the absorbent core 121 has a plurality of regions having different thicknesses. Further, the density of the absorbent core 121 is made substantially constant. Therefore, the absorbent core 121 has a plurality of regions having different basis weights of the absorbent core 121 (liquid absorbent material).

Specifically, a "low basis weight region 121D (for example, a thickness of 15 mm)" is provided on the back side and the front side region 121A in the longitudinal direction of the back side region 121C, (For example, a thickness of 25 mm) is provided on the front side in the longitudinal direction of both side portions and the back side region 121C and a "high basis weight region 121F (for example, having a thickness of 35 mm) "

Therefore, in the absorbent core 121 of the present embodiment, the basis weight of the absorbent core 121 is lower in the backward region 121C than in the crotch region 121B. Therefore, the excrement can be reliably absorbed in the crotch region 121B contacting the excretion of the wearer. On the other hand, since the stiffness is further lowered in the backward region 121C, the backward region 121C is easily deformed in conformity with the wearer's buttocks, and the fitability is increased. Therefore, the leakage of the excretion is further suppressed. The comparison of the basis weight between the crotch region 121B and the back-side region 121C may be made by comparing the average basis weight or the maximum basis weight. As a method for obtaining the basis weight (g / cm 2), for example, a method of cutting a target portion from the absorbent core 121, measuring the mass, and dividing the mass by the area can be exemplified.

In the absorbent core 121, the first compression region 41, which is the main compression region, extends from the front region 121A to the crotch region 121B on both sides in the transverse direction with respect to the longitudinal center line CL1, (The pressing area in the present invention) and the second pressing area 42, the third pressing area 43 and the fifth pressing area 45 (separate pressing areas in the present invention) And are arranged in the longitudinal direction (longitudinal direction).

The fact that they are arranged substantially in the longitudinal direction means that the distance in the longitudinal direction of the pressing area 40 adjacent in the longitudinal direction (for example, the third pressing area 43 and the fifth pressing area 45 shown in FIG. 5) Is shorter than the length (d9 in Fig. 5) in the longitudinal direction of the first press contact region 41. [0086] Specifically, it is sufficient that the distance in the longitudinal direction of the pressed regions 40 adjacent in the longitudinal direction is 1 cm or less. Since the first pressing region 41 and the second pressing region 42 overlap each other in the longitudinal direction, the interval in the longitudinal direction between the first pressing region 41 and the second pressing region 42 is Is shorter than the length d9 of the first pressing region 41 in the longitudinal direction.

The force from the belt portion 20 which is pulled up diagonally when the absorbent article 1 is worn by the pressing region 40 as described above is applied to the pressing region which is substantially continuous in the longitudinal direction Is transmitted from the front region 121A of the absorbent core 121 to the crotch region 121B by the first pressing region 41, the second pressing region 42, the third pressing region 43 and the fifth pressing region 45) It gets easier. Therefore, the crotch region 121B is lifted up to the wearer's side and is brought into close contact with the excretion of the wearer, so that leakage of the excretion can be further suppressed. Further, the fit property is increased, and the feeling of fit is also improved.

In the case where the main pressing region is also provided on the rear side, it is preferable that the pressing region separate from the main pressing region is arranged continuously in the longitudinal direction from the back region 121C to the crotch region 121B. Further, the main pressing region may continuously extend from the front region 121A or the back region 121C to the crotch region 121B. In these cases, the same effect as described above can be obtained.

4, the angle? 3 formed by the longitudinal center line CL1 and the joining portion 2 on the front side is smaller than the angle? 3 between the longitudinal centerline CL1 and the joining portion 2 on the rear side, Is larger than the angle &thetas; The angle? 3 on the front side may be in the range of 20 to 70 degrees, more preferably in the range of 30 to 60 degrees. The angle? 4 of the rear side may be in the range of 10 degrees to 60 degrees, and more preferably in the range of 20 degrees to 50 degrees.

By doing so, the belt portion 20 tilts upward toward the outside in the transverse direction on the front side where the inclination of the joint portion 2 is gentle, and conversely, on the rear side, the belt portion 20 tilts It tends to be inclined upward. Therefore, it is possible to prevent the movement of the wearer's leg, such as walking, from being inhibited by the belt portion 20 on the front side. On the other hand, on the back side, the absorbent article 1 is pulled up to the vicinity of the toe portion located above the buttocks of the wearer. Therefore, puckering of the absorbent article 1 in the crotch region 121B is suppressed, and the fitability of the absorbent article 1 is increased, so that leakage of the excretion can be suppressed. However, the angle? 3 is not limited to the above, and the angle? 3 may be equal to or less than the angle? 4.

Although the embodiments of the present invention have been described above, the embodiments are for facilitating understanding of the present invention and are not for limiting the present invention. Further, the present invention can be changed or improved without departing from the gist, and it goes without saying that the present invention includes its equivalents.

1 Absorbent article (pants-type absorbent article), 2 abutment, 2A first abutment, 2B second abutment, 10 Absorbent body, 11 Top sheet, 12 Absorber, 121 Absorbent core, 121A Forward area, 121B Crotch area, 121D low basis weight region, 121E medium weight region, 121F high basis weight region, 122 core lap sheet, 13 back sheet, 14 outer sheet, 15 end sheet, 20 belt portion, 21 first belt portion, 22 second belt portion, A first pressing part (pressing part), 42 a second pressing part (pressing part), and a second pressing part (second pressing part) (Another pressing area), 43 a third pressing area (another pressing area), 44 a fourth pressing area, 45 a fifth pressing area (another pressing area), 46 a sixth pressing area, 47 seventh pressing area, 48 The sheet-like elastic member, the BH waist opening, the LH leg opening, the CL1 vertical center line, the Lb number Line, vertical bisector

Claims (9)

A pants-like absorbent article having a longitudinal direction, a transverse direction and a longitudinal direction, a waist-hole opening portion and a pair of leg-hole opening portions,
An absorbent article comprising: an absorbent core having an absorbent core,
A pair of belt portions disposed on both sides of the absorbent main body in the transverse direction and extending and contracted in the transverse direction,
At least a pair of joining portions joining at least the absorbent main body and the pair of belt portions are provided on the front side and the rear side in the front-
The joining portion is inclined outward in the transverse direction from the waist-hole opening side toward the leg-hole opening in the longitudinal direction,
In one or both of the forward and backward directions,
The pair of joining portions do not extend and contract in the transverse direction,
Wherein the absorbent core has a density of the absorbent core that is higher than that of the surrounding area,
Wherein the compression region is a region having a length in a direction intersecting with the water line for one or both of the pair of the joint portions and is present on the water line, Those located on the same side of the joining portion as the longitudinal center line with respect to the transverse direction
Wherein the absorbent article is a pants type absorbent article. The method according to claim 1,
And the pressing region crosses the waterline. 3. The method according to claim 1 or 2,
Wherein an angle between the direction in which the pressed region has the length and the water line is 45 degrees or more and 135 degrees or less. 3. The method according to claim 1 or 2,
Wherein the waterline is a perpendicular bisector of the joint. 3. The method according to claim 1 or 2,
The absorbent core has a front region contacting the abdomen of the wearer, a crotch region contacting the wearer ' s crotch, and a back region contacting the hip of the wearer,
Wherein the pressing region is continuous from one or both of the front region and the back region to the crotch region,
Wherein the pressing region and one or more separate pressing regions are arranged in the longitudinal direction from one or both of the front region and the back region to the crotch region,
It is preferable that an interval between the longitudinal direction of the crimped region adjacent to the longitudinal direction and a distance between the longitudinal direction of the separate crimped region and the longitudinal direction of the separate crimped regions adjacent to each other in the longitudinal direction is larger than the longitudinal Shorter than the length of the direction
Wherein the absorbent article is a pants type absorbent article. 3. The method according to claim 1 or 2,
The absorbent core has a front region contacting the abdomen of the wearer, a crotch region contacting the wearer ' s crotch, and a back region contacting the hip of the wearer,
The pressing region is provided in the front region, and the pressing region is not provided in the rear region
Wherein the absorbent article is a pants type absorbent article. The method according to claim 6,
Wherein a backlash area of the absorbent core is lower than a basis weight of the absorbent core as compared with the crotch region. 3. The method according to claim 1 or 2,
And the absorbent core does not exist above the center position of the joining portion in the longitudinal direction. 3. The method according to claim 1 or 2,
And an angle formed by the longitudinal center line and the front joint is greater than an angle formed by the longitudinal center line and the joining portion on the rear side.

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