Shorts-type sanitary napkin

Abstract

To provide a shorts-type sanitary napkin which improves fitness and reduces uncomfortable feeling and flow and leakage of excrement such as menstrual blood in wearing.SOLUTION: In a shorts-type sanitary napkin (1), an absorbent body (10) includes a pair of squeezed parts (17) in which an absorber (11) and a skin side sheet (12) are squeezed in a thickness direction. Each of the pair of the squeezed parts (17) follows in a longitudinal direction of the absorbent body (10), and the squeezed part (17) has a prescribed density part (17a) of a prescribed density and a high density part (17b) with density higher than that of the prescribed density part (17a). In the squeezed part (17), a plurality of the prescribed density parts (17a) and the high density parts (17b) are provided in the longitudinal direction, and the prescribed density part (17a) and the high density part (17b) are arranged alternately. The squeezed part (17) is at least provided in the lower side in a vertical direction relative to a waist expanding and contracting member (23e) provided in the bottom of an abdominal waist part (20).SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a short-type napkin.

Background Art

[0002] As sanitary products, sanitary napkins and short-type napkins are known. Patent Document 1 discloses a so-called two-piece type short-type napkin including an exterior body (exterior back sheet) continuous from the ventral side to the dorsal side and an absorbent body.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In short-type napkins, not only the two-piece type but also a so-called three-piece type short-type napkin in which the front torso area, the rear torso area, and the absorbent body are separate members and these members are joined and fixed is desired. However, in the three-piece type short-type napkin, since the exterior body does not cover the crotch area, the fit during wearing is reduced, and due to the reduction in fit, there is a risk of giving the wearer a sense of discomfort or allowing excrement such as menstrual blood to leak through.

[0005] The present invention has been made in view of the above problems, and an object thereof is to provide a short-type napkin that can improve the fit and easily reduce the sense of discomfort during wearing and the leakage of excrement such as menstrual blood.

Means for Solving the Problems

[0006] The main invention for achieving the above object has an up-down direction, a left-right direction, and a front-back direction that are orthogonal to each other, a ventral body circumference portion, a dorsal body circumference portion that is a separate member from the ventral body circumference portion, and an absorbent body. Both side portions in the left-right direction of the ventral body circumference portion and the dorsal body circumference portion are joined at a joint portion, and end portions in the front-back direction of the absorbent body are respectively fixed to the ventral body circumference portion and the dorsal body circumference portion. It is a short-type napkin, wherein the ventral body circumference portion has a body circumference elastic member that expands and contracts in the left-right direction, the absorbent body has an absorbent body and a skin-side sheet provided on the skin side of the absorbent body, the absorbent body is provided with a pair of squeezing portions obtained by squeezing the absorbent body and the skin-side sheet in the thickness direction, each of the pair of squeezing portions is along the longitudinal direction of the absorbent body, the squeezing portion has a predetermined density portion with a predetermined density and a high-density portion with a density higher than that of the predetermined density portion, in the squeezing portion, a plurality of the predetermined density portions and the high-density portions are respectively provided in the longitudinal direction, and the predetermined density portions and the high-density portions are alternately arranged in the longitudinal direction, and the squeezing portion is provided below the body circumference elastic member provided at least at the lowermost side of the ventral body circumference portion in the up-down direction. Other features of the present invention will be clarified by the description in this specification and the attached drawings.

Effects of the Invention

[0007] According to the present invention, it is possible to provide a short-type napkin that can improve the fit and is likely to reduce the sense of discomfort during wearing and the leakage of excreta such as menstrual blood.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Mode for Carrying Out the Invention

[0009] From the description in this specification and the attached drawings, at least the following matters become clear. (Aspect 1) It has a vertical direction, a left - right direction, and a front - back direction that are orthogonal to each other, a ventral body - surrounding part, a dorsal body - surrounding part that is a separate member from the ventral body - surrounding part, and an absorbent body. Both side parts in the left - right direction of the ventral body - surrounding part and the dorsal body - surrounding part are joined at a joining part. End parts of the absorbent body in the front - back direction are respectively fixed to the ventral body - surrounding part and the dorsal body - surrounding part, and it is a short - type napkin. The ventral body - surrounding part has a body - surrounding elastic member that expands and contracts in the left - right direction. The absorbent body has an absorber and a skin - side sheet provided on the skin side of the absorber. The absorbent body includes a pair of squeezing parts obtained by squeezing the absorber and the skin - side sheet in the thickness direction. Each of the pair of squeezing parts is along the longitudinal direction of the absorbent body. The squeezing part has a predetermined - density part with a predetermined density and a high - density part with a density higher than that of the predetermined - density part. In the squeezing part, a plurality of the predetermined - density parts and the high - density parts are respectively provided in the longitudinal direction, and the predetermined - density parts and the high - density parts are alternately arranged in the longitudinal direction. The squeezing part is provided below the body - surrounding elastic member provided at least at the lowermost part of the ventral body - surrounding part in the vertical direction. It is a short - type napkin characterized by this.

[0010] According to Aspect 1, by having a predetermined - density part and a high - density part alternately arranged in the longitudinal direction, a pair of squeezing parts along the longitudinal direction, and the squeezing part being provided below the body - surrounding elastic member of the ventral body - surrounding part, when worn, a force directed inward in the left - right direction is applied by closing the wearer's thighs inward in the left - right direction, and due to the rigidity difference by the pair of squeezing parts, the absorbent body is deformed to protrude toward the skin side so as to contact the excretion opening such as the wearer's vaginal orifice. Also, due to the predetermined - density parts and the high - density parts alternately arranged in the longitudinal direction, parts where a rigidity difference occurs alternately along the longitudinal direction are provided, so that the absorbent body is likely to bend in a direction intersecting the longitudinal direction, facilitating the deformation of the absorbent body along the roundness of the wearer's body. As a result, the fit of the short - type napkin can be improved, and it is easy to reduce the discomfort during wearing and the leakage of excreta such as menstrual blood.

[0011] (Aspect 2) The ventral torso circumference part or the dorsal torso circumference part includes a nonwoven fabric sheet. The nonwoven fabric sheet includes a nonwoven fabric squeezing part obtained by squeezing only the nonwoven fabric sheet in the thickness direction. The value obtained by subtracting the minimum thickness of the nonwoven fabric squeezing part from the maximum thickness of the nonwoven fabric sheet is smaller than the value obtained by subtracting the minimum thickness of the high-density part from the maximum value of the sum of the thickness of the skin-side sheet and the thickness of the absorbent body. Or, the ventral torso circumference part or the dorsal torso circumference part includes an outer nonwoven fabric and an inner nonwoven fabric. The value obtained by subtracting the minimum thickness of the welded part obtained by welding the outer nonwoven fabric and the inner nonwoven fabric to each other from the sum of the maximum thickness of the outer nonwoven fabric and the maximum thickness of the inner nonwoven fabric is smaller than the value obtained by subtracting the minimum thickness of the high-density part from the maximum value of the sum of the thickness of the skin-side sheet and the thickness of the absorbent body. The short-type napkin of Aspect 1 is characterized by this.

[0012] According to Aspect 2, it is possible to reduce the fear that the ventral torso circumference part or the dorsal torso circumference part becomes excessively hard, improve the texture of the ventral torso circumference part or the dorsal torso circumference part, and reduce the discomfort given to the wearer. In addition, when worn, it becomes easier to follow the delicate movements of the wearer's body. On the other hand, since the value obtained by subtracting the minimum thickness of the high-density part from the maximum value of the sum of the thickness of the skin-side sheet and the thickness of the absorbent body is small, it is possible to make the squeezing part a part that is more strongly squeezed. Due to the rigidity difference provided by the squeezing part, the fit of the absorbent main body is improved, and it becomes easier to follow the shape and movement of the wearer's body.

[0013] (Aspect 3) The ventral torso circumference part or the dorsal torso circumference part includes a nonwoven fabric sheet. The nonwoven fabric sheet includes a nonwoven fabric squeezing part obtained by squeezing only the nonwoven fabric sheet in the thickness direction. The value obtained by subtracting the minimum thickness of the nonwoven fabric squeezing part from the maximum thickness of the nonwoven fabric sheet is smaller than the value obtained by subtracting the minimum thickness of the predetermined density part from the maximum value of the sum of the thickness of the skin-side sheet and the thickness of the absorbent body. The short-type napkin of Aspect 1 or 2 is characterized by this.

[0014] According to Aspect 3, it is possible to reduce the fear that the non-woven fabric sheet of the ventral torso part or the dorsal torso part becomes excessively hard, improve the texture of the ventral torso part or the dorsal torso part, and thus reduce the discomfort given to the wearer. Also, when worn, it becomes easier to follow the delicate movements of the wearer's body. Also, when worn, it becomes easier to follow the delicate movements of the wearer's body. On the other hand, since the value obtained by subtracting the maximum value of the sum of the thickness of the skin-side sheet and the thickness of the absorbent body from the minimum thickness of the high-density part is small, the squeezing part can be made into a part that is more strongly squeezed, and due to the rigidity difference provided by the squeezing part, the fit of the absorbent main body is improved, and it becomes easier to follow the shape and movement of the wearer's body.

[0015] (Aspect 4) One or more of the joining parts are provided, and in the extended state, the length of the joining part in the left-right direction is longer than the length of the high-density part in the left-right direction, which is the shorts-type napkin according to any one of Aspects 1 to 3.

[0016] According to Aspect 4, while improving the fit of the absorbent main body, since the length of the joining part in the left-right direction is longer than the length of the high-density part in the left-right direction, it is easier to give the wearer and the like an impression that the joining of the ventral torso part and the dorsal torso part is stronger than when the length of the joining part in the left-right direction is shorter than the length of the high-density part in the left-right direction, and an impression that the absorbent main body does not become excessively hard even if it has a high-density part.

[0017] (Aspect 5) A plurality of the joining parts are intermittently provided in the up-down direction, and in the extended state, the distance in the up-down direction between the centers of the joining parts adjacent to each other in the up-down direction is longer than the distance in the up-down direction between the centers of the high-density parts adjacent to each other in the up-down direction, which is the shorts-type napkin according to any one of Aspects 1 to 4.

[0018] According to Aspect 5, while improving the fit of the absorbent body, the vertical distance between the centers of the joints adjacent to each other in the vertical direction is shorter than the vertical distance between the centers of the high-density portions adjacent to each other in the vertical direction, so that the impression that the joint between the ventral body circumference portion and the dorsal body circumference portion is stronger and the impression that the absorbent body does not become overly hard even if it has high-density portions are more likely to be given to the wearer and the like than when the vertical distance between the centers of the joints adjacent to each other in the vertical direction is made longer than the vertical distance between the centers of the high-density portions adjacent to each other in the vertical direction.

[0019] (Aspect 6) The ventral body circumference portion or the dorsal body circumference portion includes a nonwoven fabric sheet, and the nonwoven fabric sheet includes a plurality of nonwoven fabric squeezing portions obtained by squeezing only the nonwoven fabric sheet in the thickness direction. The plurality of nonwoven fabric squeezing portions are intermittently provided in the vertical direction. In the stretched state, the vertical distance between the centers of the high-density portions adjacent to each other in the vertical direction is longer than the vertical distance between the centers of the nonwoven fabric squeezing portions adjacent to each other in the vertical direction. The short-type napkin according to any one of Aspects 1 to 5 is characterized in that.

[0020] According to Aspect 6, since the vertical distance between the centers of the nonwoven fabric squeezing portions is shorter than the vertical distance between the centers of the high-density portions, it becomes easier for the ventral body circumference portion or the dorsal body circumference portion to follow delicate movements of the skin or the like than when the vertical distance between the centers of the nonwoven fabric squeezing portions is made longer than the vertical distance between the centers of the high-density portions. On the other hand, since the vertical distance between the centers of the high-density portions is longer than the vertical distance between the centers of the nonwoven fabric squeezing portions, it becomes easier to deform according to the shape and movement of the wearer's body than when the vertical distance between the centers of the high-density portions is made shorter than the vertical distance between the centers of the nonwoven fabric squeezing portions, and the fit of the absorbent body is improved.

[0021] (Aspect 7) The ventral body circumferential portion has a plurality of the body circumferential elastic members above the upper end on the ventral side of the absorbent body. In the extended state, the vertical distance between the centers of the high-density portions adjacent to each other in the vertical direction is shorter than the maximum vertical distance between the centers in the vertical direction of the body circumferential elastic members adjacent to each other in the vertical direction. It is a shorts-type napkin according to any one of Aspects 1 to 6.

[0022] According to Aspect 7, since the vertical distance between the centers of the high-density portions is shorter than the maximum vertical distance of the body circumferential elastic members, compared with the case where the vertical distance between the centers of the high-density portions is made longer than the maximum vertical distance of the body circumferential elastic members in the vertical direction, while reducing the risk of excessive contraction of the ventral body circumferential portion by the body circumferential elastic members, it becomes easier to deform according to the shape and movement of the wearer's body, and the fit of the absorbent body is improved.

[0023] (Aspect 8) The ventral body circumferential portion has a plurality of the body circumferential elastic members below the upper end on the ventral side of the absorbent body. In the extended state, the vertical distance between the centers of the high-density portions adjacent to each other in the vertical direction is shorter than the maximum vertical distance between the centers in the vertical direction of the body circumferential elastic members adjacent to each other in the vertical direction. It is a shorts-type napkin according to any one of Aspects 1 to 7.

[0024] According to Aspect 8, since the vertical distance between the centers of the high-density portions is shorter than the maximum vertical distance of the body circumferential elastic members, compared with the case where the vertical distance between the centers of the high-density portions is made longer than the maximum vertical distance of the body circumferential elastic members in the vertical direction, while reducing the risk of excessive contraction of the ventral body circumferential portion by the body circumferential elastic members, it becomes easier to deform according to the shape and movement of the wearer's body, and the fit of the absorbent body is improved.

[0025] (Aspect 9) In the longitudinal direction, in a region overlapping with the pair of squeezing portions, and in the left-right direction, in an inner region in the left-right direction of the pair of squeezing portions, the skin-side sheet and the absorber do not have a squeezed portion, which is a feature of the underpants-type napkin according to any one of Aspects 1 to 8.

[0026] According to Aspect 9, in the longitudinal direction, the region overlapping with the pair of squeezing portions, and in the left-right direction, the inner region in the left-right direction of the pair of squeezing portions are portions that come into contact with the excretion port such as the vaginal orifice of the wearer during wearing. Therefore, the possibility that the portion coming into contact with this excretion port becomes hard due to the squeezed portion can be reduced, and the possibility of giving a sense of discomfort to the wearer can be reduced.

[0027] (Aspect 10) In the up-down direction, the ventral upper ends of the pair of squeezing portions are located below the lower end of the ventral body circumferential portion, and the dorsal upper ends of the pair of squeezing portions are located above the lower end of the dorsal body circumferential portion, which is a feature of the underpants-type napkin according to any one of Aspects 1 to 9.

[0028] According to Aspect 10, in the thickness direction, the portion of the absorbent body overlapping with the ventral body circumferential portion preferably deforms according to the roundness of the wearer's abdomen. Therefore, it is difficult to cause a deformation that protrudes toward the skin side, and the sense of discomfort given to the wearer can be reduced. On the other hand, in the thickness direction, the portion of the absorbent body overlapping with the dorsal body circumferential portion is likely to maintain a deformation protruding toward the skin side, making it easier to fit into the depression of the buttocks.

[0029] (Aspect 11) The dorsal body circumferential portion includes a dorsal body circumferential stretchable member that stretches in the left-right direction. The dorsal body circumferential portion has a non-stretchable portion where the dorsal body circumferential stretchable member provided at the central portion in the left-right direction of the dorsal body circumferential portion is cut and does not stretch, and a pair of stretchable cut-and-stretch portions provided on both sides in the left-right direction of the non-stretchable region. In the front-back direction, the squeezing portion has a portion overlapping with the non-stretchable portion, which is a feature of the underpants-type napkin according to any one of Aspects 1 to 10.

[0030] According to Aspect 11, it is possible to reduce the risk of the absorbent body being contracted in the left - right direction by the back - side torso - surrounding elastic member, and it becomes easier to maintain the deformed shape of the absorbent body by the squeezing portion up to the back - side torso - surrounding portion. Therefore, it becomes easier to fit the absorbent body to the wearer's body.

[0031] (Aspect 12) The lower end portion in the up - down direction has a folded portion where the absorbent body is folded. The folded portion is along the left - right direction, and the pair of squeezing portions have portions that intersect the folded portion. The disposable short - type diaper is any one of Aspects 1 to 11.

[0032] According to Aspect 12, since the pair of squeezing portions have portions that intersect the folded portion, it is possible to reduce the risk that the deformed shape protruding to the skin side in the crotch portion of the absorbent body is divided by the folded portion, and it becomes easier to maintain the shape protruding to the skin side of the absorbent body also on the buttocks side of the wearer, and it becomes easier to fit the absorbent body to the wearer's body.

[0033] (Aspect 13) The absorbent body includes an absorbent - body elastic member that is stretchable in the longitudinal direction inside the pair of squeezing portions in the left - right direction. The disposable short - type diaper is any one of Aspects 1 to 12.

[0034] According to Aspect 13, by applying force to the absorbent body with the absorbent - body elastic member, it becomes easier to promote the deformation of the absorbent body, and the fit of the absorbent body is improved.

[0035] (Aspect 14) The absorbent - body elastic member is one or a plurality of thread rubbers. In the thickness direction view, the width of the absorbent - body elastic member that overlaps at least a part of the predetermined density portion is shorter than the length in the left - right direction of the predetermined density portion. The disposable short - type diaper is the one of Aspect 13.

[0036] According to Aspect 14, by providing an absorber expansion / contraction member that overlaps with a predetermined density portion when viewed in the thickness direction, it becomes easier to apply a force to the predetermined density portion. In the extended state, when viewed in the thickness direction, since the width of the absorber expansion / contraction member is shorter than the length in the left-right direction of the predetermined density portion, the predetermined density portion has a portion where the absorber expansion / contraction member does not overlap in the left-right direction. Therefore, not only the force of the absorber expansion / contraction member but also the deformation of the absorbent main body due to the shape and movement force of the wearer's body is facilitated.

[0037] (Aspect 15) The lower end portion in the up-down direction has a folded portion where the absorbent main body is folded. The squeezing portion is provided at least on the ventral side of the folded portion. The absorber expansion / contraction member has a portion that intersects the folded portion. In the ventral side of the folded portion in the front-back direction, the upper end of the squeezing portion is located above the upper end of the absorber expansion / contraction member. The shorts-type napkin according to Aspect 13 or 14 is characterized by this.

[0038] According to Aspect 15, since the upper end of the squeezing portion is located above the upper end of the absorber expansion / contraction member, the risk of the absorbent main body being pressed against the wearer's skin or excretory opening due to excessive contraction of the absorber expansion / contraction member is reduced compared to the case where the upper end of the squeezing portion is provided below the upper end of the absorber expansion / contraction member. The natural deformation by the squeezing portion makes it easier for the absorbent main body to fit the wearer's body.

[0039] (Aspect 16) The absorber has a low basis weight portion where the basis weight is lower than the surroundings, and the low basis weight portion is provided inside the pair of squeezing portions in the left-right direction. The shorts-type napkin according to any one of Aspects 1 to 15 is characterized by this.

[0040] According to Aspect 16, in addition to the pair of squeezing portions, the low basis weight portion provided inside the pair of squeezing portions in the left-right direction makes it easier for the central portion of the absorber in the left-right direction to deform. Therefore, the absorber and the absorbent main body are more likely to deform according to the shape and movement of the wearer's body, and the absorber and the absorbent main body are more likely to fit the excretory opening of the excrement.

[0041] (Aspect 17) The absorber includes an absorbent core and a core wrap sheet located at least on the skin side of the absorbent core. The absorbent core and the core wrap sheet have an adhesive portion fixed with an adhesive and a non-adhesive portion not fixed with an adhesive. The non-adhesive portion is provided along the longitudinal direction and at the central portion of the absorbent core in the left-right direction, and is a panty-type napkin according to any one of Aspects 1 to 16.

[0042] According to Aspect 17, since the non-adhesive portion has lower rigidity than the adhesive portion fixed with the adhesive, by providing a portion with low rigidity at the central portion in the left-right direction along the longitudinal direction, the central portion of the absorber in the left-right direction is likely to deform, and the absorber is likely to fit the excretion port of the excrement.

[0043] ===This Embodiment=== <<<Basic Structure of Panty-Type Napkin 1>>> FIG. 1 is a schematic front view of the panty-type napkin 1 seen from the front side. FIG. 2 is a schematic plan view of the napkin 1 in a deployed and stretched state seen from the skin side in the thickness direction. FIG. 3 is a schematic cross-sectional view taken along the center line C-C in FIG. 2. FIG. 4 is a plan view of the absorbent body 10. FIG. 5 is a schematic cross-sectional view taken along the center line CL in FIG. 4. The center line C-C shown in FIG. 2 and the like indicates the center of the napkin 1 in the left-right direction, and the center line CL indicates the center of the napkin 1 in the up-down direction (longitudinal direction) in the deployed state. In FIG. 3 and the like, some members such as the adhesive are omitted.

[0044] The deployed state of the panty-type napkin 1 (hereinafter also referred to as "napkin 1") is a state in which a pair of side joining portions SS provided on both sides of the napkin 1 are separated and the napkin 1 is opened and flattened. The stretched state of the napkin 1 indicates a state in which the elastic member provided in the napkin 1 is stretched until the wrinkles of the napkin 1 are no longer visible. Specifically, it indicates a state in which the dimensions of each member constituting the napkin 1 are extended until they coincide with or are close to the dimensions of the member alone (that is, the dimensions in a state where the elasticity of the elastic member is not exhibited).

[0045] The napkin 1 has an up-down direction, a left-right direction, and a front-back direction that are orthogonal to each other. In the up-down direction, when worn, the side on the waist side of the wearer is defined as the "upper side", and the side on the thigh side is defined as the "lower side". In the front-back direction, when worn, the side on the front side of the wearer is defined as the "ventral side", and the side on the back side of the wearer is defined as the "dorsal side". Also, as shown in Fig. 3, the direction in which the respective members are laminated is defined as the "thickness direction", the side that contacts the wearer's skin is defined as the "skin side", and the opposite side is defined as the "non-skin side". Further, in the unfolded napkin 1, the direction corresponding to the up-down direction of the napkin 1 in the shorts shape is also referred to as the "longitudinal direction".

[0046] As shown in Fig. 2 etc., the napkin 1 has an absorbent body 10, a ventral waist portion 20 provided on the non-skin side of the absorbent body 10, and a dorsal waist portion 30. The napkin 1 is of a so-called three-piece type, and the ventral waist portion 20 and the dorsal waist portion 30 are constituted by separate members. In the unfolded state of the napkin 1 shown in Fig. 2, one end of the absorbent body 10 in the front-back direction (longitudinal direction) is disposed at the central portion of the ventral waist portion 20 in the left-right direction, and the non-skin side surface of the one end and the ventral waist portion 20 are joined by an adhesive such as a hot melt adhesive. Similarly, the other end of the absorbent body 10 in the front-back direction (longitudinal direction) is disposed at the central portion of the dorsal waist portion 30 in the left-right direction, and the non-skin side surface of the other end and the dorsal waist portion 30 are joined by an adhesive such as a hot melt adhesive. In the unfolded napkin 1, the absorbent body 10 is folded in two at the center position (center line) CL, and both side portions in the left-right direction of the ventral waist portion 20 and the dorsal waist portion 30 are joined at a pair of side joining portions SS, thereby forming the panty-shaped napkin 1 shown in Fig. 1. The center line CL in Fig. 2 etc. is also the folding portion CL. Examples of the joining method at the side joining portion SS include welding and joining with an adhesive.

[0047] The ventral waist portion 20 is a member that is disposed on the ventral side of the wearer when worn, and is rectangular in plan view in the unfolded and extended state shown in Fig. 2. The ventral waist portion 20 has a skin side sheet 21, a non-skin side sheet 22, and a plurality of ventral waist elastic members 23 that expand and contract in the left-right direction.

[0048] The dorsal body circumferential portion 30 is a member arranged on the back side of the wearer when worn, and has an overlapping portion 30A that overlaps with the ventral body circumferential portion 20 in the front-back direction of the pant-shaped napkin 1, and an extending portion 30B that extends downward from the ventral body circumferential portion 20. The overlapping portion 30A is rectangular in plan view, and the extending portion 30B is trapezoidal in reverse in plan view. The extending portion 30B can cover the buttocks of the wearer. The dorsal body circumferential portion 30 has a skin-side sheet 31 made of a flexible non-woven fabric or the like, a non-skin-side sheet 32, and a plurality of dorsal body circumferential elastic members 33 that expand and contract in the left-right direction.

[0049] As the skin-side sheets 21 and 31 and the non-skin-side sheets 22 and 32 of the ventral body circumferential portion 20 and the dorsal body circumferential portion 30, any flexible sheet may be used. For example, SMS non-woven fabric (spunbond-meltblown-spunbond non-woven fabric), spunbond non-woven fabric, air-through non-woven fabric, plastic sheet, perforated plastic sheet, and laminated sheets thereof can be used.

[0050] Examples of the ventral body circumferential elastic member 23 and the dorsal body circumferential elastic member 33 include filamentous elastic members such as thread rubber and spandex, and elastic sheets. The ventral body circumferential elastic member 23 and the dorsal body circumferential elastic member 33 are respectively arranged side by side at intervals in the vertical direction (longitudinal direction) in the ventral body circumferential portion 20 and the dorsal body circumferential portion 30, and are fixed between the skin-side sheets 21 and 31 and the non-skin-side sheets 22 and 32 with an adhesive or the like in a state of being extended in the left-right direction. The ventral body circumferential portion 20 and the dorsal body circumferential portion 30 fit around the body circumferential portion of the wearer by the ventral body circumferential elastic member 23 and the dorsal body circumferential elastic member 33.

[0051] In addition, an extension member 35 is provided along the lower end of the extension 30B of the back body circumference portion 30. Similar to the back body circumference expansion member 33, the extension member 35 is fixed in an extended state between the skin-side sheet 31 and the non-skin-side sheet 32. The extension member 35 is also a "back body circumference portion" that expands and contracts in the left-right direction. The extension member 35 causes the extension 30B to fit the wearer's buttocks and suppresses the curling of the extension 30B. However, it is not limited to the above. For example, the back body circumference portion 30 may have a rectangular shape in plan view similar to the front body circumference portion 20 and may not be provided with the extension member 35.

[0052] The absorbent body 10 is a member having a rectangular shape in plan view, and includes an absorber 11 that absorbs excretory fluid, a topsheet (skin-side sheet) 12 disposed on the skin side in the thickness direction of the absorber 11, a backsheet 13 disposed on the non-skin side of the absorber 11, an outer sheet 14, and an absorber expansion member 18. However, the absorbent body 10 may be provided with other sheet members. For example, a second sheet (not shown) may be provided between the topsheet 12 and the absorber 11 in the thickness direction. The absorbent body includes a pair of squeezing portions 17 obtained by squeezing at least the absorber 11 and the topsheet 12 in the thickness direction. The squeezing portion 17 will be described later.

[0053] The absorber 11 has an absorbent core 11a and a core wrap sheet 11b. The absorbent core 11a is a member that absorbs and holds excretory fluid such as urine. The absorbent core 11a of the present embodiment includes liquid-absorbent fibers such as pulp fibers and a superabsorbent polymer (SAP). In addition, examples of the absorbent core 11 include a SAP sheet in which a SAP layer is attached to a hydrophilic sheet, and an airlaid sheet obtained by forming liquid-absorbent fibers into a sheet shape by an airlaid method. The absorbent core 11a of the present embodiment has a substantially hourglass shape in plan view (see FIG. 4) with a constricted portion having a narrower width in the left-right direction between the front end and the rear end in the longitudinal direction, but the shape of the absorbent core 11a is not limited to this. The core wrap sheet 11b is a sheet member that covers the outer peripheral surface of the absorbent core 11a. Examples of the core wrap sheet 11b include liquid-permeable sheet members such as tissue paper and non-woven fabric.

[0054] The topsheet 12 is a liquid-permeable sheet, and for example, a hydrophilic air-through nonwoven fabric, a spunbond nonwoven fabric, or the like is used. In the present embodiment, as shown in FIG. 5, it covers substantially the entire skin side surface of the absorber 11. In the present embodiment, the topsheet 12 is provided only on the skin side of the absorber 11, but is not limited thereto. For example, both side portions in the left-right direction of the topsheet 12 may be folded back to the non-skin side so as to enclose the absorber 11.

[0055] The backsheet 13 is a liquid-impermeable sheet, and for example, a resin film or the like is used. The backsheet 13 is provided on the non-skin side of the absorber 11.

[0056] The outer sheet 14 is a member provided on the outermost non-skin side of the absorbent body 10, and in the present embodiment, forms a leakage-preventing wall portion 15 at the left and right ends in the left-right direction of the absorbent body 10. As the outer sheet 14, for example, a flexible hydrophobic nonwoven fabric is used.

[0057] A pair of leakage-preventing wall portions 15 are provided along the up-down direction (the longitudinal direction of the absorbent body 10) on both side portions in the left-right direction of the absorbent body 10. Specifically, in the left-right direction, a part of the outer sheet 14 extends outward from both ends of the absorber 11 and is bent at a plurality of locations on the skin side as shown in FIG. 5, thereby forming a pair of leakage-preventing wall portions 15. A leakage-preventing wall elastic member 16 such as a thread rubber is attached to the skin side end portion (tip portion) of the leakage-preventing wall portion 15 in a state of being extended along the vertical direction. When the napkin 1 is worn, based on the elasticity of the leakage-preventing wall elastic member 16, the leakage-preventing wall portion 15 stands up on the skin side of the wearer, suppressing lateral leakage of excrement. However, the absorbent body 10 may not be provided with the leakage-preventing wall portion 15.

[0058] The absorber expansion and contraction member 18 is a member that expands and contracts the absorbent main body in the vertical direction. The region of the absorbent main body 10 where the absorber expansion and contraction member 18 is provided becomes the region where the absorbent main body 10 expands and contracts in the vertical direction due to the expansion and contraction of the absorber expansion and contraction member 18. In the present embodiment, the absorber expansion and contraction member 18 is provided between the back sheet 13 and the outer sheet 14 in the thickness direction, and in the vertical direction, it is mainly provided below the side joint portion SS that joins both side portions in the left-right direction of the ventral body circumference portion 20 and the dorsal body circumference portion 30. The absorber expansion and contraction member 18 is preferably provided so as to straddle the lower end (near the center line CL) of the napkin 1 and the center line C-C in the left-right direction of the napkin 1. Thereby, during the wearing of the napkin 1, the lower end portion of the absorber 11 (absorbent main body 10) and the central portion in the left-right direction of the absorber 11 (absorbent main body 10) are easily deformed so as to bulge toward the skin side. Thereby, the fit during wearing can be improved. Note that the absorber expansion and contraction member 18 may be provided in a part or the whole region in the vertical direction of the absorbent main body 10. Examples of the absorber expansion and contraction member 18 include stretch members such as thread rubber and sheet-like stretch members. In the absorber expansion and contraction member 18 of the present embodiment, three thread rubbers are provided at intervals in the left-right direction.

[0059] <<<Regarding the fit of the napkin 1>>> Conventionally, as sanitary products, sanitary napkins and shorts-type napkins are known. Sanitary products have a problem that excreta such as menstrual blood leaks from the left and right directions of the sanitary product or from the rear of the sanitary product along the depression of the buttocks during wearing. As for the shorts-type napkin, a so-called two-piece type shorts-type napkin including a continuous outer body from the ventral side to the dorsal side and an absorbent main body is known, but a so-called three-piece type shorts-type napkin in which the front body circumference portion, the dorsal body circumference portion, and the absorbent main body are each constituted by separate members and these members are joined and fixed to each other is desired. However, the three-piece type short napkin has a structure in which the outer body continuous from the torso part does not cover the absorbent body (crotch part), like the two-piece type short napkin. Therefore, the fit during wearing is likely to deteriorate, and there is a risk that excrement such as menstrual blood discharged may leak from the outer sides in the left-right direction of the short napkin or the excrement may leak from the rear of the short napkin along the depression of the wearer's buttocks before being absorbed by the absorbent body. Also, when wearing, if it takes a long time for excrement such as menstrual blood discharged to be absorbed by the absorbent body, the time for the excrement such as menstrual blood to touch the wearer's skin becomes longer, which is likely to cause discomfort to the wearer or adverse effects such as easily causing rough skin of the wearer.

[0060] In contrast, as described above, the napkin 1 of the present invention has a ventral torso part 20, a dorsal torso part 30 which is a separate member from the ventral torso part 20, and an absorbent body 10. The left and right side portions of the ventral torso part 20 and the dorsal torso part 30 are joined at a side joining part SS, and the front and rear end portions of the absorbent body 10 are fixed to the ventral torso part 20 and the dorsal torso part 30 respectively, which is a short-type napkin. The ventral torso part 20 has a ventral torso stretchable member 23 that stretches in the left-right direction, and the absorbent body 10 includes a pair of squeezed parts 17, 17 obtained by squeezing the absorber 11 and the top sheet 12 in the thickness direction. And the squeezed part 17 is provided below the ventral torso stretchable member 23e provided at the lowermost side of the ventral torso part 20. The pair of squeezed parts 17, 17 are respectively along the longitudinal direction of the absorbent body 10, and the squeezed parts 17, 17 have a predetermined density part 17a with a predetermined density and a high-density part 17b with a density higher than that of the predetermined density part 17a. In the squeezed part 17, a plurality of the predetermined density parts 17a and the high-density parts 17b are provided respectively in the longitudinal direction, and the predetermined density parts 17a and the high-density parts 17b are arranged alternately in the longitudinal direction.

[0061] As shown in FIGS. 2, 4, etc., the napkin 1 has a pair of squeezing portions 17 along the longitudinal direction of the absorbent body 10. FIG. 6 is an enlarged view of a portion X in FIG. 4. The squeezing portion 17 is a portion where the absorber 11 and the topsheet 12 are squeezed in the thickness direction. However, when the napkin 1 is provided with a second sheet between the absorber 11 and the topsheet 12, or when there is another member in the thickness direction, it may be a portion where the absorber 11, the topsheet 12, and another member such as the second sheet are squeezed in the thickness direction.

[0062] As shown in FIGS. 2, etc., the pair of squeezing portions 17 of the napkin 1 of the present embodiment are respectively along the longitudinal direction, and are provided below all the ventral body circumference elastic members 23 on the ventral side of the center line CL. Further, on the dorsal side of the center line CL in the vertical direction, a pair of squeezing portions 17 along the longitudinal direction are provided below the overlapping portion 30A that overlaps the ventral body circumference portion 20 in the front-rear direction of the napkin 1 in the pant-like state. Therefore, at least a part of the squeezing portion 17 on the dorsal side is provided below all the ventral body circumference elastic members 23. By providing the squeezing portion 17 at a position away from the ventral body circumference elastic member 23, it becomes easier to maintain the shape of the absorbent body 10 deformed by the squeezing portion 17 during wearing.

[0063] As shown in FIGS. 6 and 7, the pair of squeezing portions 17, 17 have a predetermined density portion 17a with a predetermined density and a high density portion 17b with a density higher than that of the predetermined density portion 17a. In the squeezing portion 17, the predetermined density portion 17a and the high density portion 17b are alternately provided in the longitudinal direction. In other words, the predetermined density portion 17a and the high density portion 17b are repeatedly arranged a predetermined number of times in the order of the predetermined density portion 17a, the high density portion 17b, the predetermined density portion 17a, and the high density portion 17b from one side to the other side in the longitudinal direction. FIG. 7A is a schematic cross-sectional view taken along the line A-A in FIG. 6. FIG. 7B is a schematic cross-sectional view taken along the line B-B in FIG. 6. FIGS. 7A and 7B are diagrams schematically showing the cross-sections of the absorber 11 and the topsheet 12, and the boundaries between the absorber 11 and the topsheet 12 are shown with omissions. The view taken along the line A-A in FIG. 6 is a view taken at the center in the vertical direction between the centers bc of the high density portions 17b adjacent in the vertical direction.

[0064] The predetermined density portion 17a and the high density portion 17b are portions that are squeezed at a predetermined pressure until they reach a density higher than the predetermined density in a state where the absorber 11 and the topsheet 12 are overlapped during the manufacturing process of the absorbent body 10. Note that the squeezing portion 17 (predetermined density portion 17a, high density portion 17b) may be squeezed from the skin side or from the non-skin side. Since the squeezing portion 17 has higher rigidity and is more likely to become hard than the portion where no squeezing is applied, in order to prevent the hard portion of the squeezing portion 17 from contacting the skin of the wearer during wearing, it is more preferable that the absorber 11 and the topsheet 12 are squeezed from the skin side toward the non-skin side to form a squeezing portion 17 having a portion recessed toward the non-skin side.

[0065] When the fibers of the absorber 11 and the topsheet 12 are pressed, as shown in FIGS. 7A and 7B, the predetermined density portion 17a becomes a portion where the thickness of the absorber 11 and the topsheet 12 is thinner and the density is higher than the portion where the squeezing portion 17 is not provided, and the high density portion 17b becomes a portion where the thickness of the absorber 11 and the topsheet 12 is thinner and the density is higher than the predetermined density portion 17a. The predetermined density portion 17a is a portion with a thinner thickness between the high density portions 17b adjacent to each other in the longitudinal direction among the squeezing portions 17. The high density portion 17b is the portion with the thinnest thickness among the squeezing portions 17. That is, as shown in FIGS. 7A and 7B, the predetermined density portion 17a and the high density portion 17b are respectively the "bottom" portions of the portions where the absorber 11 and the topsheet 12 are thinned in the thickness direction to an arbitrary density.

[0066] The comparison of the fiber densities of the portion where the squeezing portion 17 is not provided, the squeezing portion 17, the predetermined density portion 17a, and the high density portion 17b can be performed by a well-known method. For example, it can be confirmed by visual inspection or by observing a cross-section cut in the thickness direction in a state where the absorber 11 and the topsheet 12 are overlapped with an electron microscope or the like.

[0067] Among the absorbent body 10, the portion where the squeezing part 17 is provided has higher rigidity than the portion where the squeezing part 17 is not provided. Among the squeezing parts 17, the high-density part 17b has higher rigidity than the predetermined density part 17a. The boundary of the parts with different rigidities becomes the part where deformation is likely to occur.

[0068] FIG. 8 is a diagram for explaining the deformation of the absorbent body 10. In the napkin 1, in the absorbent body 10, a pair of squeezing parts 17 are provided along the longitudinal direction and below the ventral body circumference elastic member 23e provided at the lowermost side of the ventral body circumference part 20. Thus, when the inward force F in the left-right direction is applied by closing the wearer's thighs inward in the left-right direction during wearing, due to the rigidity difference caused by the pair of squeezing parts 17, as shown in FIG. 8, the central part of the absorbent body 10 in the left-right direction is likely to deform and bulge toward the skin side in the direction of arrow Q so as to contact the excretory opening such as the wearer's vaginal opening. Different from a disposable diaper, the napkin 1 does not need to provide a space for accommodating feces in the part from the crotch to the dorsal side. Therefore, by pushing up the absorbent body 11 etc. toward the skin side to fit it to the wearer's vaginal opening or the groove (depression) of the buttocks, making it difficult to generate a gap between the wearer and the napkin 1, the outer shape of the rear of the absorbent body 10 is made to follow the roundness of the wearer's buttocks, so that leakage of excretions (such as menstrual blood) can be suppressed. In particular, when the napkin 1 fits into the groove of the buttocks, back leakage of excretory fluid can be suppressed. That is, when the absorbent body 11 and the absorbent body 10 have improved fitness to the excretory opening, it becomes easier to quickly absorb the discharged excretions, and the possibility of excretions leaking out to the outside in the left-right direction of the napkin 1 or to the rear of the napkin 1 along the depression of the buttocks can be reduced. Furthermore, in order to make the absorbent body 10 fit more closely to the wearer's body, it is more preferable not to provide an elastic member on the leak-proof wall part 15.

[0069] In addition, the squeezing portion 17 along the longitudinal direction provided in the absorbent body 10 includes a predetermined density portion 17a and a high density portion 17b that are alternately arranged in the longitudinal direction. As a result, in the absorbent body 10, portions with alternately generated differences in rigidity are provided along the longitudinal direction. Therefore, since the absorbent body 10 is likely to bend in a direction intersecting the longitudinal direction, the absorbent body 10 is easily deformed so as to bend in the direction of arrow R shown in FIG. 8 along the roundness of the wearer's body (buttocks) during wearing.

[0070] By facilitating the deformation of the absorbent body 10 in the directions of arrows Q and R, the fit of the absorbent body 10 during wearing can be improved. By improving the fit of the absorbent body 10, even in the case of a so-called three-piece type short napkin, the absorber 11 etc. can be pushed up to the skin side to fit into the vaginal opening and the groove (depression) of the buttocks of the wearer, making it difficult to generate a gap between the wearer and the napkin 1, thereby reducing the discomfort during wearing caused by the absorbent body 10 giving a feeling of separating from the wearer's skin or not following the shape of the wearer's body. Further, due to the deformation of the absorbent body 10, the excretory opening such as the vaginal opening and the absorbent body 10 are brought closer and made to come into contact easily. Therefore, it becomes easier to absorb excretions such as menstrual blood discharged during wearing at a position close to the wearer's skin, reducing the risk of the excretions continuously contacting the wearer's skin, or reducing the risk of the discharged excretions leaking from the rear of the napkin 1 by spreading outside the left and right directions of the napkin 1 or in the depression of the buttocks.

[0071] As shown in FIG. 4 and the like, each of the pair of squeezing portions 17 may be on both sides with the center line C-C in the left-right direction of the absorbent body 10 sandwiched therebetween, and may have a shape along the longitudinal direction that is continuous as a whole and at least in part. Each of the pair of squeezing portions 17 can have an arbitrary shape. For example, in the napkin 1 of the present embodiment, the squeezing portion 17 has a longitudinally separated portion. Specifically, one of the squeezing portions 17 on one side in the left-right direction has a portion provided on the ventral side, a portion provided on the dorsal side, and a portion provided between the portion provided on the ventral side and the portion provided on the dorsal side in the longitudinal direction. In the napkin 1, among the pair of squeezing portions 17, the portions provided on the ventral side are continuous at the ventral ends of the squeezing portions 17 on both sides, and the portions provided on the dorsal side of the pair of squeezing portions 17 are continuous at the dorsal ends of the squeezing portions 17 on both sides, but the present invention is not limited thereto. The pair of squeezing portions 17 may be completely separated in the left-right direction. Further, each of the pair of squeezing portions 17 may have a shape continuous from the ventral side to the dorsal side.

[0072] As shown in FIG. 4 and the like, with respect to the absorbent body 10, it is preferable that in the longitudinal direction, in the region overlapping the pair of squeezing portions 17, and in the left-right direction, in the region inside the pair of squeezing portions 17 in the left-right direction, there is no portion where the absorbent body 11 and the topsheet 12 are squeezed. Among the absorbent body 10, in the region overlapping the pair of squeezing portions 17 in the longitudinal direction and in the region inside the pair of squeezing portions in the left-right direction in the left-right direction, since it is a portion that contacts the excretion port such as the vaginal orifice of the wearer during wearing, it is preferable not to provide a squeezed portion in the portion that contacts this excretion port. Therefore, by not having a portion where the absorbent body 11 and the topsheet 12 are squeezed in the region overlapping the pair of squeezing portions 17 in the longitudinal direction and in the region inside the pair of squeezing portions 17 in the left-right direction in the left-right direction, the possibility that the portion contacting the excretion port of the wearer becomes hard due to the squeezed portion can be reduced, and the possibility of giving a sense of discomfort to the wearer during wearing can be reduced.

[0073] As shown in FIG. 2 and the like, in the vertical direction, it is preferable that the upper end 17eb on the back side of the pair of squeezing portions 17 is located above the lower end 30e of the back-side body surrounding portion 30. Thereby, in the thickness direction, while maintaining the state in which the portion of the absorbent body 10 overlapping with the back-side body surrounding portion 30 protrudes toward the skin side promoted by the squeezing portion 17 (the bulge in the direction of arrow Q in FIG. 8), it becomes easier to promote the deformation (arrow R in FIG. 8) corresponding to the roundness of the wearer's buttocks at the back rear of the absorbent body 10. Then, while fitting the absorbent body 10 into the hollow of the wearer's buttocks, it becomes easier to promote the deformation corresponding to the roundness of the buttocks.

[0074] In the napkin 1 of the present embodiment, in the vertical direction, the upper end 17eb on the back side of the pair of squeezing portions 17 is located above the lower end 30e of the back-side body surrounding portion 30, and the upper end 17eu on the ventral side of the pair of squeezing portions 17 is provided above the lower end 20e of the ventral-side body surrounding portion 20, but it is not limited thereto. For example, in the vertical direction, the upper end 17eb on the back side of the pair of squeezing portions 17 may be located above the lower end 30e of the back-side body surrounding portion 30, and the upper end 17eu on the ventral side of the pair of squeezing portions 17 may be provided below the lower end 20e of the ventral-side body surrounding portion 20. Thereby, in the thickness direction, the portion of the absorbent body 10 overlapping with the back-side body surrounding portion 30 is fitted into the hollow of the wearer's buttocks, and it is easy to promote the deformation corresponding to the roundness of the buttocks. While it is preferable that the portion of the absorbent body 10 overlapping with the ventral-side body surrounding portion 20 deforms according to the roundness of the wearer's abdomen in the thickness direction, by making it difficult to cause a deformation that protrudes toward the skin side of the portion of the absorbent body 10 overlapping with the ventral-side body surrounding portion 20 in the thickness direction, the discomfort given to the wearer can be reduced.

[0075] Also, as described above, the lower end portion in the vertical direction of the panty-shaped napkin 1 has a folding portion CL where the absorbent body 10 is folded. The folding portion CL is a portion where the absorbent body 10 is folded along the left-right direction with the skin side facing inward. In the napkin 1, the center line CL is used as the folding portion, but it is not limited thereto. The folding portion may be provided at a position different from the position of the center line.

[0076] In the napkin 1 provided with the folding portion CL, it is preferable that the pair of squeezing portions 17 have a portion intersecting with the folding portion. As shown in FIGS. 2 and 4, in the unfolded napkin 1, the squeezing portion 17 and the folding portion CL intersect. In addition, in the unfolded state, when the squeezing portion 17 and the folding portion CL intersect, in the panty-type state shown in FIG. 1, it is obvious that the squeezing portion 17 and the folding portion CL intersect. If the squeezing portion 17 is provided on the abdominal side of the folding portion CL and the squeezing portion 17 does not intersect with the folding portion CL, although the abdominal side of the folding portion CL is deformed such that the absorbent body 10 protrudes toward the abdominal side, the deformed shape protruding toward the skin side is blocked by the folding portion CL, and there is a possibility that the back side of the folding portion CL does not cause a deformation protruding toward the skin side. On the other hand, since the absorbent body 10 has a portion where the squeezing portion 17 and the folding portion CL intersect, it is possible to reduce the possibility that the deformed shape (arrow Q in FIG. 8) protruding toward the skin side in the crotch portion of the absorbent body 10 is divided by the folding portion CL. And, since it becomes easier to maintain the deformed shape of the absorbent body 10 by the squeezing portion 17 from the abdominal side to the back side, it becomes easier to fit the absorbent body 10 to the wearer's body.

[0077] As described above, the back torso portion 30 includes a back torso expansion and contraction member 33 and an extension portion expansion and contraction member 35 that expand and contract in the left-right direction. In this back torso portion 30, at the center portion in the left-right direction of the back torso portion, the back torso expansion and contraction member 33 and the extension portion expansion and contraction member 35 are cut, and the back torso portion 30 has a non-expandable portion R2 that does not expand and contract. On both sides in the left-right direction of the non-expandable portion R2, there are a pair of expandable cut expansion and contraction portions R1, R1. The non-expandable portion R2 is an area where the back torso portion 30 and the absorbent body 10 do not expand and contract in the left-right direction, and the cut expansion and contraction portions R1, R1 are areas that overlap the non-expandable portion R2 in the up-down direction and are areas that can expand and contract in the left-right direction. As shown in FIG. 2, when the napkin 1 including the cut expansion and contraction portions R1, R1 and the non-expandable portion R2 is viewed in the front-back direction (thickness direction), it is preferable that the squeezing portion 17 has a portion that overlaps the non-expandable portion R2. By having a portion where the squeezing portion 17 overlaps the non-expandable portion R2 when viewed in the front-back direction, in the portion where the squeezing portion 17 overlaps the non-expandable portion R2, the possibility that the absorbent body 10 is shrunk in the left-right direction by the back torso expansion and contraction member 33 and the extension portion expansion and contraction member 35 can be reduced. As a result, it becomes easier to maintain the deformation of the absorbent body 10 by the squeezing portion 17 (see FIG. 8) up to the portion of the back torso portion 30 that overlaps the absorbent body 10 when viewed in the thickness direction, so that the absorbent body 10 can be easily fitted to the wearer's body.

[0078] Regarding the ventral body circumferential part 20, it is preferable that the ventral body circumferential part 20 includes a non-woven fabric sheet, and the non-woven fabric sheet includes a non-woven fabric squeezing part EB obtained by squeezing only the non-woven fabric sheet in the thickness direction. For the skin-side sheet 21 and the non-skin-side sheet 22 of the ventral body circumferential part 20 of the present embodiment, non-woven fabric sheets of spunbond non-woven fabric are used. Further, in this example, single fibers of polypropylene (PP), a representative example of a thermoplastic resin, are used as the constituent fibers (heat-fusible fibers) f of the non-woven fabric sheet (see FIG. 9), but it is not limited thereto. For example, single fibers of other thermoplastic resins such as polyethylene (PE) may be used, or further, composite fibers having a sheath-core structure such as PE and PP may be used, and the constituent fibers f may be non-thermoplastic fibers. Also, either one of the skin-side sheet 21 and the non-skin-side sheet 22 (for example, the skin-side sheet 21) may be formed of a non-woven fabric sheet of spunbond non-woven fabric, and the other sheet (for example, the non-skin-side sheet 22) may be formed of a flexible sheet member other than the spunbond non-woven fabric.

[0079] In the present embodiment, since the skin-side sheet 21 and the non-skin-side sheet 22 are sheets having the same configuration, hereinafter, the skin-side sheet (non-woven fabric sheet) 21 will be described, but the same applies to the non-skin-side sheet 22. FIG. 9A is a schematic enlarged view of a portion Y in FIG. 2. In FIG. 9, the ventral body circumferential expansion member 23 is omitted. A plurality of dot-shaped (circular) non-woven fabric squeezing parts EB for squeezing the constituent fibers f of the non-woven fabric sheet are provided at multiple points on the skin-side sheet 21. In the skin-side sheet 21, the plurality of non-woven fabric squeezing parts EB are provided in a substantially staggered pattern with spaces in the vertical and horizontal directions. The non-woven fabric squeezing part EB is a portion where the skin-side sheet 21 (constituent fibers f) is crushed in the thickness direction, and in the skin-side sheet 21, it is a portion having a thinner thickness and a higher fiber density than the surroundings. By providing the non-woven fabric squeezing part EB on the skin-side sheet 21, it becomes easier to hold the constituent fibers f in a sheet shape. Note that the non-woven fabric squeezing part EB does not join the skin-side sheet 21 and the non-skin-side sheet 22. Further, instead of the non-woven fabric squeezing part EB, it may be a fused part obtained by applying heat, pressure, ultrasonic waves, etc. to fuse the constituent fibers f together.

[0080] FIG. 9B is a schematic cross-sectional view taken along line G-G in FIG. 9A. It is preferable that the value obtained by subtracting the minimum thickness Hf of the nonwoven fabric squeezing portion EB from the maximum thickness H21 of the skin-side sheet 21 is smaller than the value obtained by subtracting the minimum thickness Hb of the high-density portion 17b from the maximum value H0 of the sum of the thickness of the absorber 11 and the thickness of the topsheet 12 (H21 - Hf < H0 - Hb).

[0081] The maximum thickness H21 of the skin-side sheet 21 is the length in the thickness direction of the thickest portion of the skin-side sheet 21 that constitutes the ventral body circumferential portion 20. The minimum thickness Hf of the nonwoven fabric squeezing portion EB is the length in the thickness direction of the thinnest portion among the plurality of nonwoven fabric squeezing portions EB. The maximum value H0 of the sum of the thickness of the absorber 11 and the thickness of the topsheet 12 is the length in the thickness direction of the thickest portion in the state where the absorber 11 and the topsheet 12 are overlapped. The minimum thickness Hb of the high-density portion 17b is the length in the thickness direction of the portion where the thickness of the high-density portion 17b is the thinnest among the plurality of high-density portions 17b. The value obtained by subtracting the thickness of the nonwoven fabric squeezing portion EB from the thickness of the skin-side sheet 21 is also the depth Df of the squeezing portion obtained by squeezing the skin-side sheet 21 in the thickness direction. Similarly, the value obtained by subtracting the thickness of the high-density portion 17b from the sum of the thickness of the absorber 11 and the thickness of the topsheet 12 is also the depth Db of the squeezing portion obtained by squeezing the absorber 11 and the topsheet 12 in the thickness direction. That is, since the value obtained by subtracting the minimum thickness Hf of the nonwoven fabric squeezing portion EB from the maximum thickness H21 of the skin-side sheet 21 is smaller than the value obtained by subtracting the minimum thickness Hb of the high-density portion 17b from the maximum value H0 of the sum of the thickness of the absorber 11 and the thickness of the topsheet 12 (H21 - Hf < H0 - Hb), the depth Df of the squeezing portion obtained by squeezing the skin-side sheet 21 in the thickness direction is shallower than the depth Db of the squeezing portion obtained by squeezing the absorber 11 and the topsheet 12 in the thickness direction.

[0082] The maximum thickness H21 of the skin-side sheet 21 of the napkin 1 in this embodiment is 0.5 mm, and the minimum thickness Hf of the non-woven fabric squeezing part EB is 0.1 mm. On the other hand, the maximum value H0 of the sum of the thickness of the absorber 11 and the thickness of the top sheet 12 is 6 mm, and the minimum thickness Hb of the high-density part 17b is 1 mm. Therefore, the depth Df of the non-woven fabric squeezing part EB of the skin-side sheet 21 is 0.1 mm, and the depth Db of the high-density part 17b is 3 mm.

[0083] The ventral body circumference part 20 is a part that is likely to move according to the wearer's breathing. Therefore, in the ventral body circumference part 20, the value obtained by subtracting the minimum thickness Hf of the non-woven fabric squeezing part EB from the maximum thickness H21 of the skin-side sheet 21 is smaller than the value obtained by subtracting the minimum thickness Hb of the high-density part 17b from the maximum value H0 of the sum of the thickness of the absorber 11 and the thickness of the top sheet 12. By making the value obtained by subtracting the minimum thickness Hf of the non-woven fabric squeezing part EB from the maximum thickness H21 of the skin-side sheet 21 larger than the value obtained by subtracting the minimum thickness Hb of the high-density part 17b from the maximum value H0 of the sum of the thickness of the absorber 11 and the thickness of the top sheet 12, the risk that the skin-side sheet 21 itself becomes overly hard can be reduced. By improving the texture and flexibility of the ventral body circumference part 20, it becomes easier to respond to the delicate movements of the body, and the discomfort during wearing can be reduced. Also, during wearing, it becomes easier to follow the wearer's body. In particular, since the skin-side sheet 21 that contacts the wearer's skin during wearing has such a configuration, the uncomfortable feeling such as roughness given to the wearer's skin can be reduced.

[0084] On the one hand, in the absorbent body 10, the value obtained by subtracting the minimum thickness Hf of the non-woven fabric squeezing part EB from the maximum thickness H21 of the skin-side sheet 21 is smaller than the value obtained by subtracting the minimum thickness Hb of the high-density part 17b from the maximum value H0 of the sum of the thickness of the absorbent body 11 and the thickness of the top sheet 12. By making the value obtained by subtracting the minimum thickness Hf of the non-woven fabric squeezing part EB from the maximum thickness H21 of the skin-side sheet 21 larger than the value obtained by subtracting the minimum thickness Hb of the high-density part 17b from the maximum value H0 of the sum of the thickness of the absorbent body 11 and the thickness of the top sheet 12, the squeezing part 17 (high-density part 17b) can be made into a more firmly squeezed part. Therefore, due to the rigidity difference provided by the squeezing part 17, the absorbent body 10 is more likely to be deformed. As a result, the fit of the absorbent body 10 is improved, and it becomes easier to follow the shape and movement of the wearer's body.

[0085] Also, the ventral body circumferential part 20 may have a part where the skin-side sheet (inner non-woven fabric) 21 and the non-skin-side sheet (outer non-woven fabric) 22 are welded. For example, in the ventral body circumferential part 20 of the present embodiment, the skin-side sheet 21 and the non-skin-side sheet 22 are joined via an adhesive for fixing the ventral body circumferential elastic member 23. However, the skin-side sheet 21, the non-skin-side sheet 22, and the body circumferential elastic member 23 may be fixed to each other at a plurality of welded parts without using an adhesive. In such a case, it is preferable that the value obtained by subtracting the minimum thickness of the welded part where the skin-side sheet 21 and the non-skin-side sheet 22 are welded to each other from the sum of the maximum thickness of the skin-side sheet 21 and the maximum thickness of the non-skin-side sheet 22 is smaller than the value obtained by subtracting the minimum thickness of the high-density part 17b from the maximum value of the sum of the thickness of the absorbent body 11 and the thickness of the top sheet 12.

[0086] As a result, in the ventral body circumferential portion 20, the value obtained by subtracting the minimum thickness of the welded portion where the skin-side sheet 21 and the non-skin-side sheet 22 are welded to each other from the sum of the maximum thickness of the skin-side sheet 21 and the maximum thickness of the non-skin-side sheet 22 is larger than the value obtained by subtracting the maximum value of the sum of the thickness of the absorber 11 and the thickness of the topsheet 12 from the minimum thickness of the high-density portion 17b. This reduces the risk of the ventral body circumferential portion 20 becoming overly hard, improves the feel and flexibility of the ventral body circumferential portion 20, and reduces the discomfort during wearing. Also, during wearing, it becomes easier to conform to the wearer's body. Further, in the absorbent body 10 as well, since the squeezing portion 17 (high-density portion 17b) can be made into a portion that is more strongly squeezed, the difference in rigidity provided by the squeezing portion 17 makes it easier to promote deformation of the absorbent body 10. As a result, the fit of the absorbent body 10 is improved and it becomes easier to conform to the shape and movement of the wearer's body.

[0087] Also, regarding the non-woven fabric squeezing portion EB of the skin-side sheet 21 in the ventral body circumferential portion 20, it is preferable that the value obtained by subtracting the minimum thickness Hf of the non-woven fabric squeezing portion EB from the maximum thickness H21 of the skin-side sheet 21 (H21 - Hf) is smaller than the value obtained by subtracting the minimum thickness Ha of the predetermined density portion 17a from the maximum value H0 of the sum of the thickness of the absorber 11 and the thickness of the topsheet 12 (H0 - Ha) (H21 - Hf < H0 - Ha).

[0088] The minimum thickness Ha of the predetermined density portion 17a is the length in the thickness direction of the portion where the thickness of the plurality of predetermined density portions 17a is the thinnest. The value obtained by subtracting the thickness of the predetermined density portion 17a from the sum of the thickness of the absorber 11 and the thickness of the topsheet 12 is also the depth Da of the squeezing portion obtained by squeezing the absorber 11 and the topsheet 12 in the thickness direction. That is, the value obtained by subtracting the minimum thickness Hf of the non-woven fabric squeezing portion EB from the maximum thickness H21 of the skin-side sheet 21 (H21 - Hf) is smaller than the value obtained by subtracting the minimum thickness Ha of the predetermined density portion 17a from the maximum value H0 of the sum of the thickness of the absorber 11 and the thickness of the topsheet 12 (H0 - Hb) (H21 - Hf < H0 - Ha), so that the depth Df of the squeezing portion obtained by squeezing the skin-side sheet 21 in the thickness direction is shallower than the depth Da of the squeezing portion obtained by squeezing the absorber 11 and the topsheet 12 in the thickness direction.

[0089] In the napkin 1 of the present embodiment, as described above, the maximum thickness H21 of the skin-side sheet 21 is 0.5 mm, the minimum thickness Hf of the non-woven fabric squeezing portion EB is 0.1 mm, and the maximum value H0 of the sum of the thickness of the absorber 11 and the thickness of the topsheet 12 is 6 mm. And the minimum thickness Ha of the predetermined density portion 17a is 2 mm. Therefore, the depth Da of the predetermined density portion 17a is 4 mm.

[0090] In this way, in the ventral body circumferential portion 20, the value obtained by subtracting the minimum thickness Hf of the non-woven fabric squeezing portion EB from the maximum thickness H21 of the skin-side sheet 21 is smaller than the value obtained by subtracting the minimum thickness Ha of the predetermined density portion 17a from the maximum value H0 of the sum of the thickness of the absorber 11 and the thickness of the topsheet 12. Thus, compared with the case where the value obtained by subtracting the minimum thickness Hf of the non-woven fabric squeezing portion EB from the maximum thickness H21 of the skin-side sheet 21 is made larger than the value obtained by subtracting the minimum thickness Ha of the predetermined density portion 17a from the maximum value H0 of the sum of the thickness of the absorber 11 and the thickness of the topsheet 12, the ventral body circumferential portion 20 (skin-side sheet 21) can be prevented from becoming overly hard, the texture and flexibility of the ventral body circumferential portion 20 can be improved, and the discomfort can be reduced. Also, when worn, it becomes easier to follow the wearer's body. In particular, since the skin-side sheet 21 that contacts the wearer's skin when worn has such a configuration, discomfort such as a feeling of roughness given to the wearer's skin can be reduced. Also, in the absorbent main body 10, the squeezing portion 17 (high-density portion 17b) can be made into a portion that is more firmly squeezed. Therefore, due to the rigidity difference provided by the squeezing portion 17, the absorbent main body 10 is more likely to be deformed. As a result, the fit of the absorbent main body 10 is improved, and it becomes easier to follow the shape and movement of the wearer's body.

[0091] In addition, as shown in FIG. 9A, a plurality of nonwoven fabric squeezing portions EB provided on the skin-side sheet 21 are intermittently provided in the vertical direction. In the stretched state of the napkin 1, it is preferable that the vertical distance Lb (see FIG. 6) between the centers bc of the high-density portions 17b adjacent to each other in the vertical direction is longer than the vertical distance Le between the centers ec of the nonwoven fabric squeezing portions EB adjacent to each other in the vertical direction (Lb > Le). Since the vertical distance Le between the centers ec of the nonwoven fabric squeezing portions EB adjacent to each other in the vertical direction is shorter than the vertical distance Lb between the centers bc of the high-density portions 17b adjacent to each other in the vertical direction, compared to the case where the vertical distance Le between the centers ec of the nonwoven fabric squeezing portions EB is made longer than the vertical distance Lb between the centers bc of the high-density portions 17b, the ventral body circumferential portion 20 (skin-side sheet 21) is more easily deformed, so that the ventral body circumferential portion 20 can more easily follow the delicate movements of the wearer's skin or the like. On the other hand, since the vertical distance Lb between the centers bc of the high-density portions 17b is longer than the vertical distance Le between the centers ec of the nonwoven fabric squeezing portions EB, compared to the case where the vertical distance Lb between the centers bc of the high-density portions 17b is made shorter than the vertical distance Le between the centers ec of the nonwoven fabric squeezing portions EB, the absorbent body 10 can be more easily deformed according to the body shape with a large radius of curvature such as the wearer's buttocks, so that the fit of the absorbent body 10 during wearing is improved.

[0092] Regarding the nonwoven fabric squeezing portion EB (welding portion), although the skin-side sheet 21 of the ventral body circumferential portion 20 has been described, the skin-side sheet 31 and the non-skin-side sheet 32 of the dorsal body circumferential portion 30 may have the same configuration.

[0093] As shown in FIG. 9, the side joint SS for forming the napkin 1 into a panty shape is composed of one or more. A plurality of welded joints (joints) 70 are provided at the side joint SS of the napkin 1 of the present embodiment. The side joint SS of the napkin 1 is a region formed by providing two rows in the left - right direction of rows along the vertical direction in which a plurality of substantially rectangular welded joints 70 are arranged at intervals in the vertical direction. Examples of the welded joint 70 include welded joints such as thermal welding joints and ultrasonic welding joints. The skin - side sheets 21, 31 and the non - skin - side sheets 22, 32 of the ventral body - surrounding part 20 and the dorsal body - surrounding part 30 are overlapped, and the thermoplastic resin fibers of each sheet are fusion - welded.

[0094] In the extended state of the napkin 1, it is preferable that the length Ws in the left - right direction of one of the plurality of welded joints 70 is longer than the length Wb in the left - right direction of the high - density part 17b (Ws>Wb). The length Ws in the left - right direction of the welded joint 70 of the napkin 1 of the present embodiment is 2.4 mm, and the length Wb in the left - right direction of the high - density part 17b is 0.8 mm.

[0095] By being the napkin 1 provided with the squeezing part 17, while improving the fit of the absorbent body 10, since the length Ws in the left - right direction of the welded joint 70 is longer than the length Wb in the left - right direction of the high - density part 17b, it is easier for the wearer etc. to get the impression that the joint of the ventral body - surrounding part 20 and the dorsal body - surrounding part 30 (the joint of the side joint SS) is stronger than the case where the length Ws in the left - right direction of the welded joint 70 is shorter than the length Wb in the left - right direction of the high - density part 17b. On the other hand, regarding the high - density part 17b, even if the absorbent body 10 is provided with the high - density part 17b, since the length Ws in the left - right direction of the welded joint 70 is longer than the length Wb in the left - right direction of the high - density part 17b, it is easier for the wearer etc. to get the impression that it does not become overly hard compared to the case where the length Ws in the left - right direction of the welded joint 70 is shorter than the length Wb in the left - right direction of the high - density part 17b.

[0096] Also, as shown in FIG. 9A, for the plurality of welding joints 70 intermittently provided in the vertical direction of the body circumferential parts 20 and 30, in the extended state, the vertical distance Ls between the centers 70c of the welding joints 70 adjacent to each other in the vertical direction is preferably longer than the vertical distance Lb (see FIG. 6) between the centers bc of the high-density parts 17b adjacent to each other in the vertical direction (Ls > Lb). By being the napkin 1 provided with the squeezing part 17, while improving the fit of the absorbent body 10, the distance Ls between the centers 70c of the welding joints 70 adjacent to each other in the vertical direction is longer than the distance Lb between the centers bc of the high-density parts 17b adjacent to each other in the vertical direction, so that the impression that the joining of the side joint SS of the ventral body circumferential part 20 and the dorsal body circumferential part 30 is stronger is more likely to be given to the wearer or the like than when the distance Ls between the centers 70c of the welding joints 70 adjacent to each other in the vertical direction is made shorter than the distance Lb between the centers bc of the high-density parts 17b adjacent to each other in the vertical direction. Also, even if the absorbent body 10 is provided with the high-density part 17b having high rigidity, it is more likely to give the impression to the wearer or the like that it does not become overly hard.

[0097] Regarding the ventral body circumferential part 20, as shown in FIG. 2, it is preferable to provide a plurality of ventral body circumferential elastic members 23 above the upper end 10eu on the ventral side of the absorbent body 10. The ventral body circumferential elastic member 23 provided above the upper end 10eu on the ventral side of the absorbent body 10 is a part that fits to the abdomen of the wearer during wearing. In the extended state, the vertical distance Lb between the centers bc of the high-density parts 17b adjacent to each other in the vertical direction is preferably shorter than the maximum vertical distance L23a between the centers in the vertical direction of the ventral body circumferential elastic members 23 adjacent to each other in the vertical direction above the upper end 10eu on the ventral side of the absorbent body 10 (Lb < L23a).

[0098] In general, the radius of curvature of the roundness in the vertical direction of the human body's abdomen (waist area) is larger than the radius of curvature of the roundness in the vertical direction of the lower thigh. Also, the smaller the vertical distance between the stretchable members and the vertical distance between the high-density portions 17b, the more likely the radius of curvature of the deformation applied to the member provided with each member will be smaller. Therefore, by making the vertical distance Lb between the centers bc of the vertically adjacent high-density portions 17b in the extended state shorter than the maximum vertical distance L23a between the centers in the vertical direction of the ventral waist stretchable members 23 that are vertically adjacent above the upper end 10eu on the ventral side of the absorbent body 10, compared to the case where the vertical distance Lb between the centers bc of the vertically adjacent high-density portions 17b in the extended state is made longer than the maximum vertical distance L23a between the centers in the vertical direction of the ventral waist stretchable members 23 that are vertically adjacent, it is possible to reduce the risk of excessive contraction of the ventral waist stretchable members 23 while making it easier for the absorbent body 10 to deform according to the shape and movement of the wearer's body, and improve the fit of the absorbent body 10.

[0099] Also, regarding the ventral waist area 20, as shown in FIG. 2, it is preferable to provide a plurality of ventral waist stretchable members 23 below the upper end 10eu on the ventral side of the absorbent body 10. The ventral waist stretchable members 23 provided below the upper end 10eu on the ventral side of the absorbent body 10 are portions that fit from the wearer's abdomen to the lower thigh during wearing. In the extended state, it is preferable that the vertical distance Lb between the centers bc of the vertically adjacent high-density portions 17b is shorter than the maximum vertical distance L23b between the centers in the vertical direction of the ventral waist stretchable members 23 that are vertically adjacent to each other below the upper end 10eu on the ventral side of the absorbent body 10 (Lb < L23b). Thereby, compared to the case where the vertical distance Lb between the centers bc of the vertically adjacent high-density portions 17b in the extended state is made longer than the maximum vertical distance L23b between the centers in the vertical direction of the ventral waist stretchable members 23 that are vertically adjacent to each other, it is possible to reduce the risk of excessive contraction of the ventral waist stretchable members 23 while making it easier for the absorbent body 10 to deform according to the shape and movement of the wearer's body, and improve the fit of the absorbent body 10.

[0100] As shown in FIG. 4 and the like, it is preferable that the absorbent body 10 includes an absorber expansion and contraction member 18 that can expand and contract in the longitudinal direction inside the pair of squeezing portions 17 in the left - right direction. In the napkin 1 of the present embodiment, as the absorber expansion and contraction member 18, three thread rubbers are provided in a state of being separated in the left - right direction between the back sheet 13 and the outer cover sheet 14, and this absorber expansion and contraction member 18 is provided inside the pair of squeezing portions 17 in the left - right direction. When the absorber expansion and contraction member 18 contracts in the longitudinal direction, the absorbent body 10 can easily contact the crotch portion of the wearer. Further, the contraction of the absorber expansion and contraction member 18 facilitates the deformation of the absorbent body 10 as shown in FIG. 8, and the fit of the absorbent body 10 can be improved. Note that the absorber expansion and contraction member 18 is not limited to thread rubber and may be an expandable and contractible sheet member or the like.

[0101] Also, the lower end portion in the up - down direction of the napkin 1 in the pant - type state has a folded portion CL where the absorbent body 10 is folded. The folded portion CL is a portion where the absorbent body 10 is folded along the left - right direction with the skin - side on the inside. In the absorbent body 10, it is preferable that the squeezing portion 17 is provided at least on the ventral side of the folded portion CL. And it is preferable that the absorber expansion and contraction member 18 has a portion that intersects the folded portion CL, and on the ventral side of the folded portion CL in the front - rear direction, the upper end 17eu of the squeezing portion 17 is preferably located above the upper end of the absorber expansion and contraction member 18. In this way, on the ventral side, since the upper end 17eu of the squeezing portion 17 is located above the upper end of the absorber expansion and contraction member 18, compared with the case where the upper end 17eu of the squeezing portion 17 is provided below the upper end of the absorber expansion and contraction member 18, the risk of the absorbent body 10 being pressed against the skin or the excretory opening of the wearer due to excessive contraction of the absorber expansion and contraction member 18 can be reduced. Also, the absorbent body 10 reduces the influence of excessive contraction of the absorber expansion and contraction member 18 and makes it easier for the absorbent body 10 to undergo natural deformation by the squeezing portion 17, so that the absorbent body 10 can be more easily fitted to the body of the wearer.

[0102] Furthermore, when the absorber expansion / contraction member 18 is formed of one or a plurality of thread rubbers, the napkin 1 may include an absorber expansion / contraction member 18 that overlaps at least a part of the predetermined density portion 17a in the extended state when viewed in the thickness direction. It is preferable that the width (thickness) of the absorber expansion / contraction member 18 overlapping the predetermined density portion 17a is shorter than the length Wa in the left-right direction of the predetermined density portion 17a. In the napkin 1 of the present embodiment, in the extended state, the width (thickness) of one absorber expansion / contraction member 18 is about 0.5 mm, and the length Wa in the left-right direction of the predetermined density portion 17a is about 3 mm. By providing the absorber expansion / contraction member 18 that overlaps the predetermined density portion 17a when viewed in the thickness direction, it becomes easier to apply a force to the predetermined density portion 17a. And, when viewed in the thickness direction, since the width of the absorber expansion / contraction member 18 is shorter than the length in the left-right direction of the predetermined density portion 17a, the predetermined density portion 17a has a portion that overlaps the absorber expansion / contraction member 18 and a portion that does not overlap the absorber expansion / contraction member 18 in the left-right direction. Therefore, the portion where the predetermined density portion 17a and the absorber expansion / contraction member 18 do not overlap easily promotes the deformation of the absorbent body 10 due to not only the force of the absorber expansion / contraction member 18 but also the shape and movement force of the wearer's body.

[0103] In addition, when the absorber 11 of the absorbent body 10 includes an absorbent core 11a and a core wrap sheet 11b located at least on the skin side of the absorbent core 11a, the absorbent core 11a and the core wrap sheet 11b have an adhesive portion 11c fixed with an adhesive such as a hot melt adhesive, and a non - adhesive portion 11d not fixed with an adhesive. FIG. 10 is a diagram for explaining the adhesive portion 11c and the non - adhesive portion 11d of the absorber 11. For the sake of convenience, in FIG. 10, members such as the absorbent core 11a and the absorbent body elastic member 18 are omitted, the squeezing portion 17 is shown by a dotted line, and the adhesive portion 11c is shown by a solid line. The adhesive portion 11c shown in FIG. 10 is a portion where the absorbent core 11a and the core wrap sheet 11b are fixed with an adhesive. Specifically, it is a portion where an adhesive such as a hot melt adhesive is applied. The non - adhesive portion 11d is a portion where the absorbent core 11a and the core wrap sheet 11b are not fixed with an adhesive. Specifically, it is a portion where an adhesive such as a hot melt adhesive is not applied. And for this non - adhesive portion 11d, as shown in FIG. 10, the non - adhesive portion 11d has a portion D provided along the longitudinal direction and at the central portion in the left - right direction of the absorbent core 11a. Specifically, the portion D which is the non - adhesive portion 11d is a portion including the center line C - C in the left - right direction and is a continuous region from the front end to the rear end of the absorber 11. Usually, the portion where no adhesive is provided (non - adhesive portion 11d) has lower rigidity than the portion where the adhesive is provided (adhesive portion 11c). Therefore, in the absorber 11, by providing the non - adhesive portion 11d along the longitudinal direction at the central portion in the left - right direction, a portion with low rigidity can be provided at the central portion in the left - right direction of the absorbent body 10 (absorber 11). As a result, the central portion in the left - right direction of the absorbent body (absorber 11) is likely to be deformed, so that the central portion in the left - right direction of the absorbent body 10 (absorber 11) is easily deformed into a shape bulging toward the skin side. Therefore, when worn, the absorbent body 10 (absorber 11) easily fits to the excretion port of the excrement.

[0104] In the above-described embodiment, the basis weight of the liquid-absorbent fibers, superabsorbent polymer (SAP), etc. of the absorber 11 (absorbent core 11a) was made substantially constant, but it is not limited thereto. The absorber 11 (absorbent core 11a) may include a low-basis-weight portion having a lower basis weight than the surroundings or a high-basis-weight portion having a higher basis weight than the surroundings. For example, when the absorber (absorbent core 11a) of the napkin 1 includes a low-basis-weight portion, it is preferable that the low-basis-weight portion is provided inside the pair of squeezing portions 17 in the left-right direction. By having the absorber 11 with such a low-basis-weight portion, in addition to facilitating deformation by the pair of squeezing portions 17, the low-basis-weight portion provided inside the pair of squeezing portions 17 in the left-right direction makes the central portion of the absorber 11 in the left-right direction (inside the pair of squeezing portions 17 in the left-right direction) more likely to deform. Therefore, the absorber 11 and the absorbent main body 10 are more likely to deform according to the shape and movement of the wearer's body, and the fit of the absorber 11 and the absorbent main body 10 to the excretion port of the wearer's excrement is improved.

[0105] ===Other Embodiments=== As described above, the above embodiments are for facilitating the understanding of the present invention and are not for limiting and interpreting the present invention. It goes without saying that the present invention can be changed and improved without departing from its gist, and equivalents of the present invention are included therein.

[0106] For example, the above-described napkin 1 may have a configuration including a post-treatment tape (not shown). The shorts-type napkin 1 is larger in size than a general napkin that is excreted and used inside underwear and does not have an adhesive portion for fixing to the underwear. Therefore, by providing a post-treatment tape on the shorts-type napkin 1, when discarding the used shorts-type napkin 1, the state in which the napkin 1 is rolled up can be held by the post-treatment tape. Therefore, it is difficult for the excreted liquid absorbed by the napkin 1 to be exposed, and the used napkin 1 can be made into a compact state. Thus, it becomes easier to discard the shorts-type napkin 1.

Description of Reference Numerals

[0107] 1 Napkin (shorts-type napkin), 10 Absorbent body, 11 Absorbent 11a Absorbent core, 11b Core wrap sheet, 12 Top sheet (skin side sheet), 13 Back sheet, 14 Exterior sheet, 15 Leakage prevention wall portion, 16 Leakage prevention wall expansion member, 17 Squeezing portion, 17a Predetermined density portion, 17b High density portion, 18 Absorbent expansion member, 20 Abdominal torso portion, 21 Skin side sheet (non-woven sheet, inner non-woven fabric), 22 Non-skin side sheet (outer non-woven fabric), 23 Abdominal torso expansion member (torso expansion member), 30 Dorsal torso portion, 30A Overlapping portion, 30B Extended portion, 31 Skin side sheet, 32 Non-skin side sheet, 33 Dorsal torso expansion member, 35 Extended portion expansion member (dorsal torso expansion member), 70 Welded joint portion (joint portion), SS Side joint portion (joint portion)

Claims

1. having a vertical direction, a left - right direction, and a front - back direction that are mutually orthogonal, having a ventral body - surrounding portion, a dorsal body - surrounding portion which is a separate member from the ventral body - surrounding portion, and an absorbent body, both side portions in the left - right direction of the ventral body - surrounding portion and the dorsal body - surrounding portion are joined at a joining portion, end portions in the front - back direction of the absorbent body are respectively fixed to the ventral body - surrounding portion and the dorsal body - surrounding portion, and are a shorts - type napkin, the ventral body - surrounding portion has a body - surrounding stretchable member that stretches and contracts in the left - right direction, the absorbent body has an absorbent body and a skin - side sheet provided on the skin side of the absorbent body, the absorbent body includes a pair of squeezing portions obtained by squeezing the absorbent body and the skin - side sheet in the thickness direction, each of the pair of squeezing portions is along the longitudinal direction of the absorbent body, the squeezing portion has a predetermined - density portion with a predetermined density and a high - density portion with a density higher than that of the predetermined - density portion, in the squeezing portion, a plurality of the predetermined - density portions and the high - density portions are respectively provided in the longitudinal direction, and the predetermined - density portions and the high - density portions are alternately arranged in the longitudinal direction, the squeezing portion is provided below the body - surrounding stretchable member provided at least at the lowermost side of the ventral body - surrounding portion in the vertical direction, and is characterized by a shorts - type napkin.

2. The shorts - type napkin according to Claim 1, wherein the ventral body - surrounding portion or the dorsal body - surrounding portion includes a non - woven fabric sheet, the non - woven fabric sheet includes a non - woven fabric squeezing portion obtained by squeezing only the non - woven fabric sheet in the thickness direction, a value obtained by subtracting the minimum thickness of the non - woven fabric squeezing portion from the maximum thickness of the non - woven fabric sheet is smaller than a value obtained by subtracting the minimum thickness of the high - density portion from the maximum value of the sum of the thickness of the skin - side sheet and the thickness of the absorbent body, or, the ventral body - surrounding portion or the dorsal body - surrounding portion includes an outer non - woven fabric and an inner non - woven fabric, a value obtained by subtracting the minimum thickness of a welded portion where the outer non - woven fabric and the inner non - woven fabric are welded to each other from the sum of the maximum thickness of the outer non - woven fabric and the maximum thickness of the inner non - woven fabric is smaller than a value obtained by subtracting the minimum thickness of the high - density portion from the maximum value of the sum of the thickness of the skin - side sheet and the thickness of the absorbent body, and is characterized by a shorts - type napkin.

3. The shorts - type napkin according to Claim 1 or 2, wherein the ventral body - surrounding portion or the dorsal body - surrounding portion includes a non - woven fabric sheet, the non - woven fabric sheet includes a non - woven fabric squeezing portion obtained by squeezing only the non - woven fabric sheet in the thickness direction, The value obtained by subtracting the minimum thickness of the non-woven fabric squeezing part from the maximum thickness of the non-woven fabric sheet is smaller than the value obtained by subtracting the maximum value of the sum of the thickness of the skin-side sheet and the thickness of the absorbent body from the minimum thickness of the predetermined density part. A short-type napkin characterized by this.

4. The short-type napkin according to claim 1 or 2, One or more of the joints are provided, In the extended state, the length of the joint in the left-right direction is longer than the length of the high-density part in the left-right direction. A short-type napkin characterized by this.

5. The short-type napkin according to claim 1 or 2, A plurality of the joints are provided intermittently in the up-down direction, In the extended state, the distance in the up-down direction between the centers of the joints adjacent to each other in the up-down direction is longer than the distance in the up-down direction between the centers of the high-density parts adjacent to each other in the up-down direction. A short-type napkin characterized by this.

6. The short-type napkin according to claim 1 or 2, The ventral body circumference part or the dorsal body circumference part includes a non-woven fabric sheet, The non-woven fabric sheet includes a plurality of non-woven fabric squeezing parts obtained by squeezing only the non-woven fabric sheet in the thickness direction, A plurality of the non-woven fabric squeezing parts are provided intermittently in the up-down direction, In the extended state, the distance in the up-down direction between the centers of the high-density parts adjacent to each other in the up-down direction is longer than the distance in the up-down direction between the centers of the non-woven fabric squeezing parts adjacent to each other in the up-down direction. A short-type napkin characterized by this.

7. The short-type napkin according to claim 1 or 2, The ventral body circumference part has a plurality of body circumference elastic members above the upper end on the ventral side of the absorbent main body, In the extended state, the distance in the up-down direction between the centers of the high-density parts adjacent to each other in the up-down direction is shorter than the maximum distance in the up-down direction between the centers in the up-down direction of the body circumference elastic members adjacent to each other in the up-down direction. A short-type napkin characterized by this.

8. The short-type napkin according to claim 1 or 2, The ventral body circumference part has a plurality of body circumference elastic members below the upper end on the ventral side of the absorbent main body, In the extended state, the distance in the up-down direction between the centers of the high-density parts adjacent to each other in the up-down direction is shorter than the maximum distance in the up-down direction between the centers in the up-down direction of the body circumference elastic members adjacent to each other in the up-down direction. A short-type napkin characterized by this.

9. The panties-type napkin according to claim 1 or 2, wherein in the longitudinal direction, in a region overlapping the pair of squeezing portions, and in the left-right direction, in an inner region in the left-right direction of the pair of squeezing portions, there is no portion where the skin-side sheet and the absorber are squeezed. A panties-type napkin characterized by this.

10. The panties-type napkin according to claim 1 or 2, wherein in the vertical direction, the upper end on the ventral side of the pair of squeezing portions is located below the lower end of the ventral body circumference portion, the upper end on the dorsal side of the pair of squeezing portions is located above the lower end of the dorsal body circumference portion. A panties-type napkin characterized by this.

11. The panties-type napkin according to claim 1 or 2, wherein the dorsal body circumference portion is provided with a dorsal body circumference elastic member that expands and contracts in the left-right direction, the dorsal body circumference portion has a non-elastic portion where the dorsal body circumference elastic member provided at the central portion in the left-right direction of the dorsal body circumference portion is cut and does not expand and contract, and a pair of cut-elastic portions that can expand and contract provided on both sides in the left-right direction of the non-elastic region, when viewed in the front-rear direction, the squeezing portion has a portion overlapping the non-elastic portion. A panties-type napkin characterized by this.

12. The panties-type napkin according to claim 1 or 2, wherein the lower end portion in the vertical direction has a folded portion where the absorbent body is folded, the folded portion is along the left-right direction, the pair of squeezing portions has a portion intersecting the folded portion. A panties-type napkin characterized by this.

13. The panties-type napkin according to claim 1 or 2, wherein the absorbent body is provided with an absorber elastic member that can expand and contract in the longitudinal direction, inside the pair of squeezing portions in the left-right direction. A panties-type napkin characterized by this.

14. The panties-type napkin according to claim 13, wherein the absorber elastic member is one or more thread rubbers, in the extended state, when viewed in the thickness direction, the width of the absorber elastic member overlapping at least a part of the predetermined density portion is shorter than the length in the left-right direction of the predetermined density portion. A panties-type napkin characterized by this.

15. The panties-type napkin according to claim 13, wherein the lower end portion in the vertical direction has a folded portion where the absorbent body is folded, the squeezing portion is provided at least on the ventral side of the folded portion, the absorber elastic member has a portion intersecting the folded portion. A panty-type napkin, characterized in that, on the ventral side of the folding portion in the front-rear direction, the upper end of the squeezing portion is located above the upper end of the absorber expansion and contraction member.

16. The panty-type napkin according to claim 1 or 2, wherein the absorber has a low basis weight portion with a lower basis weight than the surroundings, and the low basis weight portion is provided inside the pair of squeezing portions in the left-right direction. A panty-type napkin characterized by this.

17. The panty-type napkin according to claim 1 or 2, wherein the absorber includes an absorbent core and a core wrap sheet located at least on the skin side of the absorbent core, and the absorbent core and the core wrap sheet have an adhesive portion fixed with an adhesive and a non-adhesive portion not fixed with an adhesive, and the non-adhesive portion is provided along the longitudinal direction and at the center portion of the absorbent core in the left-right direction. A panty-type napkin characterized by this.

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