JP2006116045A - Absorbent article - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an absorbent article which prevents crushing, compressing and dispersion of excrement within the absorbent article and also prevents leakage out of the excrement from the absorbent article. <P>SOLUTION: The absorbent article comprises a top sheet arranged at least on the skin abutting surface side, a back sheet arranged on the outer surface side, an absorber sandwiched between the sheets, side rim sections facing each other and extending in the longitudinal direction of the article body, and end rim sections facing each other and extending in the width direction of the article body. The absorbent article further has a front section and a back section in the longitudinal direction and leg surrounding sections between the front and back sections. A cylindrical compression resisting layer and a cylindrical buffer layer are arranged between the top sheet and the absorber. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an absorbent article such as a disposable paper diaper, a urine pad, and a sanitary napkin, and more particularly to an absorbent article in which excrement is not crushed and compressed by body pressure.

  In recent years, absorbent articles having various configurations have been proposed in order to enhance the excretion absorption function and retention function.

  For example, a tape-type paper diaper 100 as shown in Patent Document 1, as shown in a perspective view in FIG. 12 and in a cross-sectional view along line XX in FIG. 13 is usually disposed on the skin contact surface side. A top sheet 101 made of non-woven fabric and the like, a back sheet 102 arranged on the outer surface side, made of a plastic sheet such as polyethylene, non-woven fabric, or a combination of these, and interposed between these two sheets 101, 102, the whole being tissue, etc. The absorbent body 104 covered with the water absorbent paper 103 constitutes a paper diaper main body 105 whose planar shape is formed in an hourglass shape.

  The tape-type paper diaper 100 has a front body FP and a back body BP in the longitudinal direction (vertical direction) of the diaper main body 105, and leg leg portions LO positioned between the front and back bodies FP and BP. The top sheet 101, the back sheet 102, and the absorber 104 are arranged in the center part in the width direction (lateral direction) of the diaper body 105 of the leg periphery LO, and in the rear half of the leg periphery LO. By making the diaper main body 105 penetrate in the thickness direction, an opening 107 serving as the excreta containing part 106 is formed.

  Further, a liquid-impervious coating sheet 108 is provided on the outer surface of the back sheet 102 so as to cover the opening 107, and water is absorbed on the inner surface of the coating sheet 108, that is, on the excrement storage part 106 side. The interior sheet 109 is provided, and both ends of the interior sheet 109 are attached to the outer surface of the back sheet 102.

  When loose stool is excreted, for example, in the disposable diaper 100 configured as described above, the loose stool passes through the opening 107 and is accommodated in the excreta accommodating part 106, and moisture contained in the loose stool is absorbed by the interior sheet 109. Therefore, only the solid content contained in the soft stool remains on the interior sheet 109. Therefore, since the loose stool does not remain in the excrement container 106 while maintaining high fluidity, the excrement leaks from the opening 107 and reduces the flow of the upper surface of the top sheet 101. I was able to.

However, the above-described disposable diaper 100 causes the absorbent body 104 to be crushed by the body pressure when the weight of the wearer, that is, body pressure is applied to the absorbent body 104 by, for example, sleeping or sitting on the wearer. As a result, the peripheral edge portion 110 of the opening 107 is crushed and the excreta accommodating portion 106 is eliminated. Therefore, when the excrement is particularly hard stool, the excrement is crushed and compressed, diffuses on the top sheet 101, and further, the excrement leaks out from the paper diaper 100, which makes the wearer uncomfortable. Was given. Moreover, since excrement adheres to a wearer's skin, especially when a wearer is an infant, generation | occurrence | production of rough skin was a serious problem. Furthermore, when excrement leaks out from the paper diaper 100, there is also a problem that it is difficult to perform post-processing without soiling the wearer's hand.
JP 2003-275247 A

  The present invention has been made in view of the above-described situation, and the object of the present invention is that excrement is crushed and compressed, diffused into the absorbent article, and further excrement is absorptive. To provide an absorbent article that does not leak from the article.

  The object of the present invention is that an article main body is constituted by at least a top sheet disposed on the skin contact surface side, a back sheet disposed on the outer surface side, and an absorbent body interposed between the two sheets, and each other. Opposite side edges extending in the longitudinal direction of the article main body and opposite end edges extending in the width direction of the article main body facing each other, the front body in the longitudinal direction, the back body, In an absorbent article having leg portions positioned between the front and back bodies, a cylindrical compression resistant layer and a buffer layer are provided between the top sheet and the absorber. This is accomplished by providing an absorbent article.

  Further, the above object of the present invention is to provide the absorptivity, wherein the compression resistant layer is provided at a substantially central portion in the width direction of the article body at least between the leg periphery and the back body. This is effectively achieved by providing the article.

  In the above object of the present invention, the absorber is provided with a recess having a plane area smaller than the area of the projection surface of the compression resistant layer at a position corresponding to the hollow part of the compression resistant layer. This is achieved more effectively by providing an absorbent article characterized in that.

  In addition, the object of the present invention is to provide an area of the projection surface of the compression-resistant layer in the absorbent body at a substantially central portion in the width direction of the absorbent body at least between the leg periphery and the back body. A recess having a plane area of the same size as or a plane area larger than the area of the projection surface of the compression-resistant layer is provided, and the compression-resistant layer is provided inside the recess. This is accomplished effectively by providing an absorbent article that does.

Further, the object of the present invention is that the compression-resistant layer has a thickness of 4 mm or more, a width of 5 mm or more and less than the width of the absorber, and the area of the projection surface of the excreta containing part formed by the compression-resistant layer. This is achieved more effectively by providing an absorbent article characterized by a thickness of 1000 mm ² or more.

  Moreover, the said objective of this invention is achieved more effectively by providing the absorbent article characterized by the said buffer layer being provided in the skin contact surface of the said compression-resistant layer.

  Further, the object of the present invention is to provide an absorption characterized in that the buffer layer has a thickness of 1 mm or more and can cover at least the skin contact surface of the edge of the compression resistant layer. This is achieved more effectively by providing a sex article.

  Furthermore, the above object of the present invention can be achieved more effectively by providing an absorbent article characterized in that a cut is provided in the substantially central portion of the buffer layer.

  According to the absorbent article according to the present invention, the excrement container is provided with a compression-resistant layer by providing a cylindrical compression-resistant layer that is not crushed even when body pressure is applied between the top sheet and the absorbent body. It is formed by the hollow part of the layer. Therefore, even if body pressure is applied to the compression-resistant layer, the excrement container can be maintained, so the excrement stored in the excrement container is crushed and compressed by the body pressure and returned to the top sheet. Thus, it is possible to prevent the excrement from leaking out from the absorbent article. As a result, the wearer is not uncomfortable, a good wearing feeling can be given, and excrement does not adhere to the wearer's skin, so that the occurrence of rough skin can also be prevented. . Furthermore, since the excrement can be prevented from leaking from the absorbent article, the post-treatment of the absorbent article is simplified for the wearer.

  By providing a recess at a position corresponding to the hollow portion of the compression-resistant layer of the absorbent body, the thickness of the excrement container can be increased, and the wearer can remove the excrement contained and held in the excrement container. Since the distance to the skin can be made longer, it is possible to prevent the excrement from adhering to the skin of the wearer. As a result, the excrement is crushed and compressed by body pressure. In addition to preventing, the occurrence of rough skin can be prevented. Moreover, since the volume of the excrement storage part can be increased, it is possible to prevent the excrement from overflowing from the excrement storage part.

  Moreover, the wearing feeling of an absorbent article can be improved by providing a buffer layer in the skin contact surface of a compression-resistant layer.

  Furthermore, by forming a cut in the buffer layer, the excrement can be smoothly transferred to and retained in the excrement container.

  Hereinafter, the absorbent article according to the present invention will be described in detail with reference to the drawings, taking as an example the case where the absorbent article is a pants-type paper diaper. In addition, this invention is not necessarily limited to the following embodiment, and it cannot be overemphasized that the structure can be changed suitably in the range which does not deviate from a claim.

  FIG. 1 is a perspective view showing a usage state of a pants-type paper diaper (hereinafter referred to as “main paper diaper”) 10 according to the first embodiment of the present invention, and FIG. 2 is a developed view of the paper diaper 10 of FIG. And it is sectional drawing of the width direction at the time of seeing from the skin contact surface side. As will be described later, the present paper diaper 10 is substantially the same as the conventional paper diaper 100 described above except for the provision of a compression resistant layer and a buffer layer between the top sheet and the absorbent body. is there.

  Similar to the conventional paper diaper 100 described above, the present paper diaper 10 includes a top sheet 11 disposed on the skin contact surface side, a back sheet 12 disposed on the non-skin contact surface side (outer surface side), and these A diaper main body 15 having a substantially hourglass shape is formed by an absorbent body 14 interposed between the sheets 11 and 12 and entirely covered with a water absorbent paper 13 such as a crepe paper. The present paper diaper 10 has both side edge portions 10SF facing each other and extending in the longitudinal direction of the diaper main body 15, and both end edge portions 10EF facing each other and extending in the width direction of the diaper main body 15, and furthermore, a diaper. In the longitudinal direction of the main body 15, a front body 10FP, a rear body 10BP, and leg leg portions 10LO located between the front and rear bodies 10FP and 10BP are provided.

  As shown in FIG. 2, the paper diaper 10 is provided with a waterproof film 16 between the back sheet 12 and the absorber 14, and a second sheet 17 between the top sheet 11 and the absorber 14. However, the waterproof film 16 and the second sheet 17 can be omitted as appropriate.

  The top sheet 11 used in the present paper diaper 10 is a sheet that allows excrement to permeate the absorbent body 14, and has a feel close to underwear, and is a fine material with a fine fiber density such as perforated or non-porous. Nonwoven fabrics, porous plastic sheets, and the like are preferably used, but are not necessarily limited to these materials, and various known materials can be used. In addition, when many through-holes are formed in the top sheet 11, excrement will be absorbed more rapidly by the absorber 14, and it will be excellent in dry touch property.

  A sheet material such as transparent or translucent polyethylene or polypropylene is used for the back sheet 12, but in addition to this, a laminated nonwoven fabric obtained by laminating a nonwoven fabric such as a polyethylene sheet, or a waterproof film described later is interposed. A nonwoven fabric sheet (in this case, the back sheet 12 is composed of a waterproof film and a nonwoven fabric) or the like can be used after ensuring liquid impermeability. Note that the back sheet 12 is preferably liquid-impermeable. Further, in recent years, from the viewpoint of preventing stuffiness, those having moisture permeability tend to be used preferably.

  The absorbent body 14 may be any substance that can absorb and retain excrement, and is usually made mainly of cotton-like pulp and mixed with a superabsorbent polymer (SAP). Various known materials such as those made only of cotton-like pulp, SAP sheets, air laid nonwoven fabrics (air laid and SAP) can be used. Further, as shown in FIG. 2, when the absorbent body 14 is covered with a water absorbent paper 13 such as a tissue, the water waste paper 13 quickly diffuses the excrement into the absorbent body 14, and the excrement returns to the top sheet 11. Can be prevented. The water absorbent paper 13 can be omitted as appropriate.

  Further, the length l of one side in the longitudinal direction of the absorbent body 14 is preferably at least 30 mm or more in order to fulfill the absorption function.

  The waterproof film 16 is formed into a sheet by melting and kneading an inorganic filler in an olefin resin such as polyethylene or polypropylene, from the viewpoint of preventing excrement leakage and stuffiness. Thereafter, a microporous sheet obtained by stretching in a uniaxial or biaxial direction is preferably used. Moreover, you may use what coated the acrylic resin, the polyurethane resin, etc. directly on base materials, such as a nonwoven fabric.

  As the second sheet 17, one having a fiber density smaller than that of the top sheet 11 is preferably used. Further, since the second sheet 17 does not directly contact the wearer's skin, a sheet made of a short fiber nonwoven fabric can be used. Furthermore, as the second sheet 17, a mesh-like film, a perforated nonwoven fabric, or the like can be used, and water-retaining fibers may be included. Furthermore, a hydrophilic agent can be added to the second sheet 17.

  FIG. 3 is an assembly view of the absorbent body 14, the compression resistant layer 18 and the buffer layer 19 used in the paper diaper 10, and FIG. 4 is a perspective view of the absorbent body 14 after assembly. As shown in the drawing, the present paper diaper 10 is provided at least between the second sheet 17 (the top sheet 11 when the second sheet 17 is omitted) and the absorber 14, that is, on the skin contact surface of the absorber 14. A cylindrical compression-resistant layer 18 is provided between the leg-surrounding portion 10LO and the back body 10BP at a substantially central portion in the width direction of the diaper main body 15, and on the skin contact surface of the compression-resistant layer 18. The buffer layer 19 is provided so as to cover the skin contact surface of the edge 20 of the compression resistant layer 18.

  The compression-resistant layer 18 is a layer that is formed in a cylindrical shape and that can maintain the hollow portion 21 of the cylinder without being crushed even when the weight (body pressure) of the wearer is applied.

  As a material for forming the compression-resistant layer 18, various known materials such as a material capable of withstanding body pressure, such as a thermoplastic fiber structure (airlaid nonwoven fabric), a synthetic resin foam, a cellular soft urethane sponge, etc. Can be used.

  Since the compression-resistant layer 18 is formed in a cylindrical shape as described above, when provided on the skin contact surface of the absorbent body 14, excretion is stored and retained by the hollow portion 21 of the compression-resistant layer 18. The object accommodating part 22 can be formed.

  Further, when the compression resistant layer 18 is provided at least at a position between the leg periphery 10LO and the back body 10BP of the diaper main body 15, the diaper 10 is worn at a substantially central portion of the excrement storage part 22 when the paper diaper 10 is worn. Since the person's anus is located, the excrement of soft stool and hard stool can be reliably transferred to the excreta containing part 22. Therefore, since the excrement does not adhere to the wearer's skin, rough skin can be prevented. In addition, the water | moisture content, such as excrement urine, is absorbed and hold | maintained at the absorber 14, like the conventional paper diaper 100.

  Moreover, since the compression-resistant layer 18 can maintain the hollow part 21 of the compression-resistant layer 18, that is, the excrement accommodation part 22 is not crushed by a wearer's body pressure, It is possible to prevent the stored excrement from being crushed and compressed and diffusing on the top sheet 11. Therefore, it is possible to give the wearer a comfortable wearing feeling and to further prevent excrement from adhering to the wearer's skin. Moreover, since excrement can also be prevented from leaking out from the paper diaper 10, the post-treatment of the paper diaper 10 is simplified for the wearer.

  The compression resistant layer 18 has a thickness d1 of at least 4 mm or more, preferably 10 to 25 mm, and a width (length in the width direction of the diaper body 15) w of 5 mm or more and preferably less than or equal to the width of the absorber 14, preferably 50 to 130 mm. When the compression resistant layer 18 has such a thickness d1 and width w, it can withstand body pressure, and the compression resistant layer 18 can be further prevented from being crushed.

Moreover, when the compression resistant layer 18 is viewed from above (when viewed from the arrow A side in FIG. 3), the projection surface of the excreta containing part 22 formed by the hollow portion 21 of the compression resistant layer 18 (in FIG. 3). When the area of 23) is 1000 mm ² or more, a sufficiently large excreta accommodating part 22 can be formed. Therefore, even if excreta is excreted in large quantities, It is possible to prevent the waste from overflowing from the waste storage part 22, excretion of the waste on the top sheet 11, and leakage from the paper diaper 10.

In addition, the shape of the projection surface 23 of the excrement container 22 is not limited to the circular shape as shown in FIGS. 3 and 4, and the other is applicable as long as the area of the projection surface 23 is 1000 mm ² or more. Various known shapes such as a star shape, a square shape, a triangle shape, and an animal shape can be used.

  In addition, as long as the compression resistant layer 18 is formed in a cylindrical shape, the compression resistant layer 18 is not limited to the cylindrical shape as shown in FIGS. 3 and 4. The shape of the projection surface 23 ′ can be various known shapes such as a star shape, a quadrangle, a triangle, and an animal shape.

  Furthermore, the shape of the projection surface 23 of the excrement container 22 and the projection surface 23 'of the compression resistant layer 18 are not necessarily the same shape. For example, the shape of the projection surface 23 of the excrement container 22 Is a star shape, and the shape of the projection surface 23 ′ of the compression resistant layer 18 may be a different shape such as a quadrangle.

  The compression resistant layer 18 is formed of a material having a certain degree of hardness so as not to be crushed even when a body pressure is applied as described above, so that the compression resistant layer 18 contacts the wearer's skin. If it does, a feeling of wear will worsen and there is also a possibility of damaging a wearer's skin. Therefore, the paper diaper 10 improves the feeling of wear by providing the cushioning layer 19 having cushioning properties on the skin contact surface of the compression resistant layer 18 and reducing the impact of the compression resistant layer 18.

  The material for forming the buffer layer 19 is not particularly limited as long as it is a material that has cushioning properties such as sponge or sponge rubber and can reduce the impact of the compression resistant layer 18. Various known materials that can improve the feeling of wearing, such as plastic films and other synthetic resins with holes, can be used. Further, when the buffer layer 19 formed of such a material is further covered with a nonwoven fabric, a laminated nonwoven fabric, or the like, the wearing feeling can be further improved.

  Since the buffer layer 19 is formed of a material such as a sponge as described above, the water permeability is excellent, but the permeability of solid matter such as feces is poor, and excrement is transferred to the excrement storage unit 22. It is hard to do. That is, the solid matter of excrement remains on the skin contact surface of the buffer layer 19, and as a result, the excrement returns to the top sheet 11 and diffuses.

  Therefore, as shown in the figure, a notch 24 is provided at a substantially central portion of the buffer layer 19. As a result, the excrement can be smoothly transferred to the excretion container 22 through the cut 24. Therefore, excrement can be prevented from being crushed by body pressure and returning to the top sheet 11.

  The thickness d2 of the buffer layer 19 is at least 1 mm or more, preferably 3 to 15 mm. If the thickness d2 is less than 1 mm, the cushioning effect of the buffer layer 19 cannot be obtained, and the wearing feeling is lowered. On the other hand, if the thickness d2 of the buffer layer 19 is too thick, the excrement will be prevented from moving to the excreta accommodating part 22.

  Further, the size of the buffer layer 19 does not have to be the same size as the compression resistant layer 18 as shown in the figure, and is a size that can cover at least the skin contact surface of the edge 20 of the compression resistant layer 18. If it exists, since a compression-resistant layer 18 does not contact | abut a wearer, a feeling of wear can be improved.

  Since the shape of the projection surface of the buffer layer 19 is not particularly limited, any shape that can cover at least the skin contact surface of the edge 20 of the compression-resistant layer 18 is shown in FIGS. In addition to the circular shape as shown in Fig. 1, various other known shapes such as a quadrangle, a triangle, an animal shape, a star shape, and a cross shape can be used.

  Further, as shown in FIGS. 3 and 4, the shape of the projection surface of the compression resistant layer 18 and the buffer layer 19 is not necessarily the same, and the skin contact surface of the edge portion 20 of the compression resistant layer 18 is not necessary. If it is covered with the buffer layer 19, for example, the shape of the projection surface 23 'of the compression resistant layer 18 is a quadrangle, and the shape of the projection surface of the buffer layer 19 is a circular shape. Also good.

  In addition, as shown in FIG. 2, if the cuts 25 are formed in the top sheet 11 and the second sheet 17 at positions corresponding to the positions of the cuts 24 provided in the buffer layer 19, the excrement can be smoothly and reliably performed. It becomes possible to move to the excrement storage part 22, and excrement does not stay on the top sheet 11. Therefore, while being able to improve a feeling of wear more, it can prevent effectively that excrement leaks from paper diaper 10. Note that the shape of the cut 25 is not limited to a straight line, but may be various shapes such as a wavy line and a cross.

  In addition, the paper diaper 10 as described above is usually provided with a waterproof film 16, an absorbent body 14, a compression resistant layer 18, a buffer layer 19, a second sheet 17, and a back sheet 12, as in the case of the conventional absorbent article 100. The top sheet 11 is laminated in order.

  Therefore, the paper diaper 10 can be manufactured by laminating the buffer sheet 19 in which the cuts 24 are formed in advance and the top sheet 11 and the second sheet 17 in which the cuts 25 are formed. Then, after bonding, the paper diaper 10 can also be manufactured by forming the cuts 24 and the cuts 25 at positions corresponding to the buffer layer 19 from the top sheet 11.

  Further, for bonding the compression resistant layer 18 and the buffer layer 19, the compression resistant layer 18 is attached to the upper surface of the absorbent body 14 by various known means such as an adhesive such as a hot melt adhesive, a pressure sensitive adhesive, and bonding by heat fusion. The buffer layer 19 can be adhered to the compression resistant layer 18 and the second sheet 17.

  FIG. 5 is an assembly diagram of the absorbent body 14 ′, the compression resistant layer 18, and the buffer layer 19 ′ used in the paper diaper according to the modified example of the paper diaper 10 according to the first embodiment described above. It is sectional drawing of the width direction of the paper diaper 10 using absorber 14 'shown in FIG. The absorbent body 14 ′ according to this modification is substantially the same as the disposable diaper 10 according to the first embodiment described above except for the shape of the cut 24 ′ formed in the buffer layer 19. Therefore, in the following description, corresponding constituent elements are denoted by the same reference numerals.

  As shown in the drawing, when the planar shape of the cut 24 ′ is circular and the buffer layer 19 ′ is provided with an opening, the excrement can be transferred to the excretion container 22 more smoothly. The planar shape of the notch 24 'is not limited to the circular shape as shown in FIG. 5 as long as it can cover at least the skin contact surface of the edge 20 of the compression resistant layer 18. Various known shapes such as a triangle, a star, and a cross may be used.

  As mentioned above, although the absorbent article which concerns on this invention was demonstrated based on one Embodiment, this invention can change the structure as follows.

  FIG. 7 is an assembly diagram of the absorbent body 14A, the compression resistant layer 18 and the buffer layer 19 used in the disposable diaper according to the second embodiment of the present invention, and FIG. 8 uses the absorbent body 14A shown in FIG. It is sectional drawing of the width direction of the paper diaper. The other configuration of the paper diaper according to the present embodiment except for the structure of the absorber 14A is substantially the same as that of the paper diaper 10 according to the first embodiment described above. Are described with the same reference numerals.

  As shown in the figure, the paper diaper according to the present embodiment is similar to the paper diaper according to the first embodiment, on the skin contact surface of the absorbent body 14A, at least between the leg periphery 10LO and the back body 10BP. A cylindrical compression-resistant layer 18 is provided at a substantially central portion in the width direction of the diaper main body 15, and the skin contact surface of the edge 20 of the compression-resistant layer 18 is provided on the skin contact surface of the compression-resistant layer 18. A buffer layer 19 in which cuts 24 are formed is provided so as to cover the surface. The difference from the first embodiment described above is that the absorber 14A has a recess having a plane area smaller than the area of the projection surface 23 'of the compression resistant layer 18 at a position corresponding to the hollow part 20 of the compression resistant layer 18. 26 is provided.

  As described above, when the concave portion 26 having a plane area smaller than the area of the projection surface 23 ′ of the compression resistant layer 18 is provided at a position corresponding to the hollow portion 20 of the compression resistant layer 18 of the absorbent body 14 </ b> A, the compression resistance is prevented. Since the excrement accommodation part 22 is formed by the hollow part 20 and the recessed part 26 of the layer 18, the thickness d3 of the excrement accommodation part 22 is the thickness d1 of the compression resistant layer 18 and the thickness (depth) d4 of the recessed part 26. And the total thickness. Therefore, since the distance between the wearer's skin and the excrement retained in the excrement container 22 is increased, the excrement can be further prevented from adhering to the wearer's skin. As a result, the excrement can be prevented from being crushed and compressed by body pressure, and the occurrence of rough skin can be further prevented.

  Moreover, the volume of the excrement storage part 22 can be increased by increasing the thickness d4 of the excrement storage part 22. Therefore, more excrement can be accommodated and held, and excrement can be prevented from overflowing from the excrement accommodation part 22. Furthermore, since the water | moisture content of excrement can also be absorbed from the peripheral part of the recessed part 26 of the absorber 14, when excrement is especially soft stool, it isolate | separates loose stool quickly into a water | moisture content and a solid substance with low fluidity | liquidity. Since only the solid matter can be accommodated and retained in the excrement accommodating part 22, the excrement can be prevented from flowing back onto the top sheet 11, and the wearer can feel comfortable wearing. Can be given.

  Moreover, even if the thickness d1 of the compression resistant layer 18 is reduced, the thickness d4 of the excreta container 22 can be maintained, so that the skin contact surface of the disposable diaper 10 can be made substantially flat. Therefore, the wearing feeling of the paper diaper 10 can be further improved. Furthermore, it becomes easy to appropriately adjust the thickness d3 of the excreta accommodating part 22 according to needs, such as reducing the thickness d1 of the compression resistant layer 18 and increasing the thickness (depth) d4 of the recess 26.

  Note that the planar shape of the recess 26 is not limited to the circular shape as shown in FIG. 7, and may be, for example, a rectangular shape as long as it has a plane area smaller than the area of the projection surface 23 ′ of the compression resistant layer 18. It is possible to adopt various known planar shapes such as an elliptical shape, a triangular shape, a hexagonal shape, and a star shape. Further, the planar shape of the recess 26 is not necessarily the same as the shape of the projection surface of the compression resistant layer 18 or the buffer layer 19 as shown in FIG. The shape of the projection surface 23 ′ of the compression layer 18 may be different, such as a circular shape, the shape of the projection surface of the buffer layer 19 may be a square shape, and the planar shape of the recess 26 of the absorber 14A may be a star shape.

  Furthermore, the structure of the absorbent article according to the present invention can be changed as follows.

  FIG. 9 is an assembly diagram of the absorbent body 14B, the compression resistant layer 18 and the buffer layer 19 used in the disposable diaper according to the third embodiment of the present invention, and FIG. 10 is an assembled view of the absorbent body 14B shown in FIG. FIG. 11 is a cross-sectional view in the width direction of the disposable diaper 10 using the absorbent body 14B shown in FIGS. 9 and 10. The paper diaper according to the present embodiment is substantially the same as the paper diaper 10 according to the first embodiment and the second embodiment described above except for the structure of the absorber 14B. Components will be described with the same reference numerals.

  As shown in FIGS. 9 to 11, the absorbent body 14B according to the present embodiment has at least the leg periphery 10LO on the skin contact surface of the absorbent body, similarly to the paper diaper 10 according to the second embodiment described above. A cylindrical compression-resistant layer 18 is provided between the rear body 10BP and a substantially central portion in the width direction of the diaper main body 15, and a compression-resistant layer is provided on the skin contact surface of the compression-resistant layer 18. A buffer layer 19 in which cuts 24 are formed is provided so as to cover the skin contact surface of the 18 edge portions 20. Further, similarly to the absorbent body 14A according to the second embodiment described above, the absorbent body 14B is provided with a recess 26B at a position corresponding to the hollow portion 21 of the compression resistant layer 18, but with the second embodiment, The difference is that the flat area of the recess 16B is the same as the area of the projection surface 23 'of the compression resistant layer 18 or larger than the area of the projection surface 23' of the compression resistant layer 18. is there.

  Thus, when the planar area of the recess 26B provided in the absorber 14B is the same size as the area of the projection surface of the compression resistant layer 18 or an area larger than the area of the projection surface of the compression resistant layer 18, The compression resistant layer 18 can be provided inside the recess 26B, that is, the recess 26B of the absorbent body 14B can be filled with the compression resistant layer 18, and the excreta accommodating part 22 formed by the hollow portion 21 of the compression resistant layer 18. Is formed inside the absorber 14B. Therefore, as shown in FIG.10 and FIG.11, since the skin contact surface of the paper diaper 10 can be formed flat, a feeling of wear can be improved more.

  Further, even if the excrement storage part 22 is formed inside the absorbent body 14B, the excrement storage part 22 is constituted by the compression resistant layer 18, so that it is pushed even if the wearer's body pressure is applied to the absorbent body 14B. The excrement stored in and retained in the excreta accommodating part 22 is not crushed and is not crushed and compressed. Therefore, excrement can be prevented from returning and diffusing on the top sheet 11, and excrement can be prevented from leaking out of the paper diaper 10.

  As shown in FIGS. 10 and 11, the compression resistant layer 18 and the buffer layer 19 are provided in the recess 26B of the absorber 14B, and the skin contact surface of the absorber 14B is formed to be a flat surface. In addition, although not shown, the compression resistant layer 18 may be provided in the recess 26B of the absorbent body 14B, and the buffer layer 19 may be provided so as to protrude from the skin contact surface of the absorbent body 14B.

The present invention is not limited to the above-described pants-type paper diapers, but can be applied to various other known absorbent articles such as tape-type paper diapers and incontinence pads.

1 is a perspective view of a pants-type paper diaper according to the present invention. It is sectional drawing of the width direction of the figure which expand | deployed FIG. 1 and was seen from the upper surface. It is an assembly drawing of the absorber which concerns on 1st Embodiment, a compression-resistant layer, and a buffer layer. It is an expansion perspective view after the assembly of the absorber shown in FIG. It is an assembly drawing of the absorber which concerns on the example of a change of 1st Embodiment. FIG. 6 is a cross-sectional view in the width direction of a paper diaper using the absorbent body shown in FIG. 5. It is an assembly drawing of the absorber which concerns on 2nd Embodiment, a compression-resistant layer, and a buffer layer. It is the width direction sectional drawing of the paper diaper which uses the absorber shown in FIG. It is an assembly drawing of the absorber which concerns on 3rd Embodiment, a compression-resistant layer, and a buffer layer. It is an expansion perspective view after the assembly of the absorber shown in FIG. It is sectional drawing of the width direction of the paper diaper which uses the absorber shown in FIG.9 and FIG.10. It is a perspective view of the tape-type paper diaper which is the conventional absorbent article. It is XX sectional drawing of FIG.

Explanation of symbols

10, 100 Paper diaper 11, 101 Top sheet 12, 102 Back sheet 14, 14A, 14B, 104 Absorber 15, 105 Diaper body 18 Compression layer 19 Buffer layer 20 Edge of compression layer 21 Hollow portion 22 of compression layer Excrement storage part 24 Cut 26.26B Recess 107 Opening 108 Cover sheet 109 Interior sheet 110 Peripheral part of opening

Claims (8)

  An article main body is configured by at least a top sheet disposed on the skin contact surface side, a back sheet disposed on the outer surface side, and an absorbent body interposed between the two sheets. Both side edges extending in the longitudinal direction and both end edges facing each other and extending in the width direction of the article body are located between the front body, the back body, and the front and back bodies in the longitudinal direction. An absorbent article having a leg periphery, wherein a cylindrical compression resistant layer and a buffer layer are provided between the top sheet and the absorber.   The absorbent article according to claim 1, wherein the compression-resistant layer is provided at a substantially central part in the width direction of the article main body at least between the leg periphery and the back body.   The concave portion having a plane area smaller than the area of the projection surface of the compression-resistant layer is provided in the absorbent body at a position corresponding to the hollow portion of the compression-resistant layer. The absorbent article according to claim 2.   In the absorber, a plane area having the same size as the area of the projection surface of the compression-resistant layer is provided at a substantially central portion in the width direction of the absorber at least between the leg periphery and the back body, or The concave portion having a plane area larger than the area of the projection surface of the compression resistant layer is provided, and the compression resistant layer is provided inside the concave portion. The absorbent article as described. The compression-resistant layer has a thickness of 4 mm or more, a width of 5 mm or more and a width of the absorber or less, and an area of the projection surface of the excrement container formed by the compression-resistant layer is 1000 mm ² or more. The absorbent article according to any one of claims 1 to 4.   The absorbent article according to any one of claims 1 to 5, wherein the buffer layer is provided on a skin contact surface of the compression resistant layer.   The thickness of the said buffer layer is 1 mm or more, and is a magnitude | size which can cover the skin contact surface of the edge part of the said compression-resistant layer at least. Absorbent article as described in 1.   The absorbent article according to any one of claims 1 to 7, wherein a cut is provided in a substantially central portion of the buffer layer.

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