JP4494255B2 - Absorbent articles - Google Patents

Description

  The present invention relates to a disposable absorbent article such as a disposable diaper, an infant training pant, or an incontinence pad. More specifically, the sheet can be prevented from being turned over at the time of manufacture or use. The present invention relates to a top sheet of an absorbent article having good performance, and an absorbent article using the top sheet.

  For example, absorbent articles such as disposable diapers usually have at least a liquid-permeable surface sheet disposed on the front surface side (skin contact surface side) and a liquid-impermeable back sheet disposed on the back surface side. And the article main body is comprised by the absorber interposed between these both sheets, and excrement is absorbed and hold | maintained by an absorber via a surface sheet.

  Conventionally, a surface sheet used for such an absorbent article may be composed of a top sheet and a second sheet, for example. In this case, the top sheet is formed by forming a circular or elliptical seal portion at an equal pitch on the back surface side (side facing the absorber) of the top sheet with an adhesive or the like, and the top sheet is interposed via this seal portion. A second sheet is attached to the back side of the sheet.

  Thus, the double-sided topsheet may cause so-called sheet turn-up, in which the second sheet is peeled off from the top sheet at the time of manufacture or use. When the sheet is turned up during production, it causes an operational trouble, and the absorbent article becomes a defective product, so that the productivity is lowered.

  Therefore, as shown in FIG. 15, the pitch P (51) of the seal portion 51 in the MD direction of the topsheet 50 is narrowed, the area ratio of the seal portion 51 is increased, and the adhesive strength of the topsheet 50 is increased. It is proposed to prevent the sheet from being turned up.

  However, since the seal portion 51 is hard and rigid, the pitch P (51) of the seal portion 51 is narrowed to increase the area ratio of the seal portion 51, and the feel and wearing feeling of the absorbent article are significantly deteriorated. was there. Moreover, since the seal | sticker part 51 cannot permeate | transmit excrement, such as a bodily fluid, if the area ratio of the seal | sticker part 51 becomes high, the permeation | transmission speed | rate of a bodily fluid will fall. For this reason, there is also a problem that body fluid retains water on the top sheet 50 (on the skin contact surface of the absorbent article), thereby causing blurring and lateral leakage. Furthermore, in such a surface sheet 50, since the seal portion 51 is provided at an equal pitch P (51) over almost the entire surface sheet 50, the seal portion 51 is also provided at the portion 52 where the wearer's defecation opening abuts. It was provided. For this reason, since especially the transfer to the absorber of stool was inhibited, excrement remains on the surface sheet 50, and the skin of the wearer (for example, baby) is soiled, or the post-treatment of the absorbent article There was also a problem that sometimes the hands of non-wearers (for example, mothers) were soiled.

  The present invention has been made in view of the above-described circumstances, and the object of the present invention is that the sheet is not turned over during manufacturing or use, and the absorptivity has particularly good absorption performance. An object is to provide a surface sheet of an article and an absorbent article using the surface sheet.

The above object of the present invention comprises an article main body comprising at least a top sheet disposed on the front surface side, a back sheet disposed on the back surface side, and an absorber interposed between the sheets. In the absorbent article in which a stool pocket having a depth in the thickness direction of the absorbent body is provided at the buttocks contact portion of the absorbent body, the top sheet has a top surface on which a large number of seal portions are formed. A sheet and a mesh sheet made of non-woven fabric and having fine openings on the entire surface are formed by being stuck through the seal portion, and the mesh sheet is formed to be narrower than the width of the top sheet, and The size of the opening is smaller than the size of the seal portion, and the plurality of seal portions are composed of a plurality of rows arranged in the MD direction of the topsheet, and the number of seal portions in each row is constant. The absorption is characterized in that the pitch in the MD direction is set so as to decrease toward the end flap portion of the absorbent article and is formed in a portion excluding the portion facing the stool pocket of the topsheet. This is achieved by providing a sex article .

Moreover, the said objective of this invention is effectively achieved by providing the absorbent article characterized by the pitch ratio of the said seal part being 80% or less .

Moreover, the said objective of this invention is achieved more effectively by providing the said surface sheet the absorbent article characterized by the area ratio of the said seal part being 0 to 20% .

  According to the surface sheet of the absorbent article according to the present invention, an absorptivity formed by forming a seal portion on the top sheet and attaching a mesh sheet and / or a second sheet as a nonwoven fabric sheet through the seal portion. It is a surface sheet of the article, and the pitch of the seal part with respect to the MD direction of the surface sheet is set so as to decrease toward the both end edges of the absorbent article, so that the sheet can be prevented from being turned up, Since the permeation of excrement is not hindered, the permeation rate of the body fluid does not decrease, and the absorption performance can be improved.

  Moreover, since the pitch ratio of the seal portion is 80% or less, the flexibility of the waist portion of the absorbent article can be particularly maintained, and the wearing feeling can be further improved.

  Moreover, since a seal | sticker part is not formed in the stool permeation specialization part of a surface sheet, stool permeability can be made more favorable.

  Moreover, since the area ratio of the seal part of the surface sheet is set to 0 to 20%, the absorption performance can be improved, the flexibility of the sheet can be maintained, and the wearing feeling is improved. Can be.

  In addition, since the number of seal portions formed in the MD direction and / or CD direction of the surface sheet is made constant, the seal strength in the CD direction can always be made constant, and the occurrence of sheet turn-up more effectively. Can be prevented.

  Further, an absorption body comprising at least an article body including at least a top sheet disposed on the front surface side, a back sheet disposed on the back surface side, and an absorber interposed between the both sheets. In a functional article, the surface sheet is formed using the surface sheet as described above, so that the sheet is not turned over during production or use, and has excellent absorption performance. Can be prevented.

  Further, by providing a stool pocket for storing and holding excrement at the buttocks contact portion of the absorbent body, excrement, particularly stool, does not remain on the surface sheet.

  Furthermore, since the plane shape of the stool permeation specialization part of the top sheet and the plane shape of the stool pocket provided in the absorbent body are substantially the same shape, the stool permeation performance can be improved.

  Hereinafter, the contents of the present invention will be described based on preferred embodiments. In addition, this invention is not necessarily limited to the following embodiment, and it cannot be overemphasized that the structure can be variously changed in the range which does not deviate from a claim.

  FIG. 1 (A) shows a top view of a surface sheet (hereinafter referred to as “the surface sheet”) 10 used in the absorbent article according to the present invention, and FIG. 1 (B) is FIG. 1 (A). II sectional drawing of is shown. As shown in the figure, the top sheet 10 is formed by sticking a rectangular mesh sheet 12 to the surface side (skin contact surface) of the top sheet 11. In addition, detailed description of the absorbent article will be described later.

  This surface sheet 10 is comprised from the mesh sheet 12 which is the top sheet 11 and a nonwoven fabric sheet. Specifically, a circular sticking part (hereinafter referred to as “seal part”) 13 is formed on the surface side of the top sheet 11, and the mesh sheet 12 is formed on the top surface of the top sheet 11 via the seal part 13. The top sheet 10 is formed by being attached (sealed) on substantially the entire surface.

  The top sheet 10 does not have to have the mesh sheet 12 attached to substantially the entire top surface of the top sheet 11 in this way, but is the top surface of the top sheet 11 and the center of the top sheet 11 in the width direction. It may be attached to only the portion extending in the longitudinal direction. Moreover, you may affix only on the upper surface of the top sheet 11, and the feces transmission specialization part mentioned later.

  The seal portion 13 can be formed by various known methods such as an adhesive such as a hot melt adhesive, or a heat fusion such as ultrasonic bonding or heat seal bonding. However, from the viewpoint of wearing feeling and operability, it is preferable to form by heat fusion.

  Note that the planar shape of the seal portion 13 is not limited to a circular shape as illustrated, but may be an ellipse, a triangle, a rectangle, a picture, or a combination thereof. Further, the seal portion 13 is not limited to a discontinuous shape as shown in the figure, but may be a continuous shape such as a line such as a straight line or a curve. A combination of a continuous shape and a continuous shape may be used. However, since the seal portion 13 has a discontinuous shape, pinpoint adhesion is achieved in a range where the skin of the wearer comes into contact, so that the flexibility of the topsheet 10 can be improved and the usability is improved. Therefore, it is preferable.

  Further, the surface sheet 10 has a pitch of the seal portion 13 with respect to a running direction in the sheet manufacturing process (hereinafter referred to as “MD (machine direction) direction”). It is set so as to become smaller toward the waist). That is, the pitch of the seal portion 13 is set to be smaller toward the end flap portion of the absorbent article, and conversely, the pitch of the seal portion 13 is set to be larger toward the center portion of the absorbent article. Thus, by forming many seal parts 13 in the part equivalent to the end flap part of an absorptive article, when cutting a long sheet in the manufacturing process of this surface sheet 10, for example, mesh sheet 12 Can be prevented from peeling off from the top sheet 11, that is, the sheet can be prevented from being turned over, and the productivity of the topsheet 10 or the absorbent article can be improved. Moreover, since the number of the sealing parts 13 formed in the area | region where many bodily fluids flow decreases, the fall of the permeation | transmission speed | rate of bodily fluids can be prevented, and this surface sheet 10 becomes favorable in absorption performance, and is the absorbent article. Occurrence of fog and lateral leakage can be effectively prevented.

  At this time, it is preferable that the ratio (P1 / P2) (hereinafter referred to as “pitch ratio”) of the smallest pitch P1 and the second smallest pitch P2 of the seal portion 13 is 80% or less. Since the seal part 13 is harder and more rigid than the non-seal part, when the pitch ratio exceeds 80%, the touch of the end flap part of the absorbent article becomes hard, and the wearing feeling is significantly reduced.

  The surface sheet 10 is a portion corresponding to the buttocks contact portion of the main body of the absorbent article, which is a range specialized for fecal permeation, that is, a portion facing a stool pocket (described later) provided in the absorbent body (hereinafter, “ It is preferable that the seal part 13 is not formed on the stool permeation specific part. Since the seal portion 13 is substantially a non-permeate portion, the solid portion such as feces is inhibited by the seal portion 13 by not forming the seal portion 13 in the fecal permeation specific portion 14, and the absorbent body. Without remaining on the skin contact surface of the absorbent article. Therefore, this surface sheet 10 has the advantage that the fecal permeation performance is also improved, the skin of the wearer of the absorbent article is not soiled, and the post-treatment of the absorbent article is easy.

  In particular, when the seal portion is formed after laminating all the constituent articles of the absorbent article, which will be described later, the lower part of the feces permeation specialization section 14 of the absorbent article is a stool pocket provided in the absorbent body, so However, if the stool permeation specialization part 14 is not provided with the seal part 13, the seal part 13 is not formed in the hollow part, so that the peristaltic pressure (seal pressure) can be made constant. There is also.

  In the present embodiment, the plane shape of the fecal permeation specialization section 14 is substantially bowl-shaped, but in addition to this, a home base shape, a rectangular shape corresponding to the plane shape of the feces pocket formed in the absorbent article. Etc., and various shapes can be employed.

  In addition, the feces permeation performance of the front face sheet 10 may be further improved by making the plane shapes of the feces permeation specialization part 14 of the front face sheet 10 and the feces pocket provided in the absorber substantially the same shape. it can.

  Moreover, it is preferable that this surface sheet 10 is 0 to 20% of the area ratio of the seal part 13 (ratio which the total plane area of the seal part 13 accounts with respect to the plane area of this surface sheet 10). When the area ratio of the seal part 13 exceeds 20%, the seal part 13 is a waste non-permeate part as described above, so that the permeation rate of the bodily fluid decreases and the body fluid is retained on the skin contact surface of the absorbent article. In addition, blurring and horizontal leakage occur. Moreover, since the sealing part 13 is rigid, when it is a surface sheet in which the area ratio of the sealing part 13 exceeds 20%, the surface sheet is directly applied to the skin of the wearer when used in an absorbent article. Since it becomes a member to touch, textures, such as the touch of an absorbent article, and softness, will fall remarkably and a feeling of mounting will fall.

  Furthermore, this surface sheet 10 makes the number of the sealing parts 13 formed in the MD direction and / or CD (cross machine direction) direction (direction orthogonal to the above-described MD direction) constant. Thereby, the intensity | strength of MD direction and / or CD direction can be made constant, and the malfunction which arises at the time of manufacture and use can be reduced. That is, for example, as shown in FIG. 1, the number of seal portions 13 formed in one row (vertical row in the figure) in the CD direction of the sheet is formed so that every row is eight. As a result, the occurrence of sheet turning can be further reduced.

  In addition, the formation pattern of the seal | sticker part 13 of this surface sheet 10 is not restricted to a pattern as shown in FIG. 1, For example, it can also be set as a pattern as shown in FIGS.

  FIG. 2 shows a pattern formed by reducing the pitch in the CD direction of the seal portion 13 formed at the positions on both sides of the feces permeation specialization portion 14 in the CD direction of the sheet. 3 is the same pattern as the formation pattern of the seal portion 13 shown in FIG. 2 except that the planar shape of the seal portion 13 is an ellipse. In FIG. 4, the fecal permeation specialization part 14 has a rectangular shape, the seal part 13 is not formed in this part, and the seal part 13 is provided on the outermost side of both sides of the fecal permeation specialization part 14 in the CD direction of the sheet. It is a formed pattern. 4 is set so that the pitch of the seal portion 13 with respect to the CD direction of the sheet becomes smaller toward the center portion in the CD direction of the sheet. That is, the pitch of the seal portion 13 is set to be smaller toward the both side portions of the absorbent article, and conversely, the pitch of the seal portion 13 is set to be increased toward the center portion in the width direction of the absorbent article. By adopting such a formation pattern of the seal portion 13, the number of the seal portions 13 formed in a region where more body fluid flows is reduced, so that the absorption performance of the topsheet 10 is improved. be able to.

  As a constituent material of the top sheet 11 used for the top sheet 10, a material having liquid permeability and hydrophilicity such as a non-porous or perforated nonwoven fabric or a porous plastic sheet is preferably used. Examples of the material fibers constituting the nonwoven fabric include synthetic fibers such as olefins such as polyethylene or polypropylene, polyesters, and amides, recycled fibers such as rayon and cupra, and natural fibers such as cotton. Also, a core-sheath fiber, a side-by-side fiber, a split fiber, or the like having a fiber having a high melting point as a core and a fiber having a low melting point as a sheath can be used effectively. As for the processing method, a nonwoven fabric obtained by a known appropriate processing method such as a spunlace method, a spunbond method, a thermal bond method, a melt blown method, a needle punch method or the like can be used. Of these processing methods, the spunlace method is excellent in terms of flexibility and drape, and the thermal bond method is excellent in terms of bulkiness and softness. However, the top sheet 11 in the topsheet 10 is not necessarily limited to these. However, the present invention is not limited to these materials or processing methods.

  The mesh sheet 12 is a sheet material composed of a non-woven fabric, and a sheet material having a thickness of 0.1 to 5.0 mm, preferably 0.3 to 2.0 mm, is used on the entire surface of the sheet material. The fine mesh-like openings (mesh) 15 are formed by pin embossing or suction method known in the art.

The opening ratio of the opening 15 is set to 15 to 30%, preferably 18 to 20%, and the numerical aperture is set to 15 pieces / cm ² or less, preferably 6 to 12 pieces / cm ² . The opening 15 has a diameter of 0.1 to 10.0 mm, preferably 0.15 to 5.5 mm.

  The hydrophilicity of the surface of the mesh sheet 12 is preferably regular hydrophilicity or water repellency. Since this surface sheet 10 is used for an absorbent article and its hydrophilicity is too high, the moisture of excrement (especially soft stool) diffuses to the surface, and even if the solid content of stool is absorbed, the spread of moisture Is unfavorable because it is visually uncomfortable to the wearer. Further, the planar shape of the opening 15 is not limited to a circle as shown in the figure, and may be an arbitrary shape such as an ellipse.

  As mentioned above, although 1st Embodiment of the surface sheet which concerns on this invention was described, this invention can change the structure as follows.

  FIG. 5 (A) shows a top view of a top sheet (hereinafter referred to as “the top sheet 10A”) according to the second embodiment of the present invention, and FIG. 5 (B) is a plan view of FIG. 5 (A). A VV sectional view is shown. In addition, this surface sheet 10A is comprised by the top sheet 11, the mesh sheet 12, and the second sheet | seat 16, and other points except having set the planar shape of the feces permeation | transmission specialization part 14 to the home base shape are the surface mentioned above. It is substantially the same as the sheet 10. Therefore, the same code | symbol is attached | subjected to the component corresponding to the component of the surface sheet 10 mentioned above, and the description is abbreviate | omitted.

  That is, as shown in the figure, the top sheet 10A has a rectangular mesh sheet 12 attached to the top sheet 11 and a rectangular sheet on the back side (the side facing the absorber) of the top sheet 11. It is formed by sticking a second sheet 16 which is a non-woven sheet.

  Specifically, the mesh sheet 12 is attached to the upper surface of the top sheet 11 via the seal part 13 formed on the front surface side of the top sheet 11, and the circular attachment part is provided on the back surface side of the top sheet 11. (Hereinafter referred to as “seal part 13 ′”), and through this seal part 13 ′, the second sheet 16 is adhered to the back surface of the top sheet 11 to form the top sheet 10 A. . By forming in this way, the region where the excrement of the absorbent article flows is configured in triplicate by the top sheet 11, the mesh sheet 12, and the second sheet 16, so that the strength of this region is increased, thereby There is an advantage that operability is more stable.

  The seal portion 13 ′ can be formed by various known methods in the same manner as the seal portion 13 described above, and various planar shapes can be employed. Note that the seal portion 13 and the seal portion 13 'do not necessarily have to be formed by the same bonding method, and may have different shapes.

  At this time, if the pitch ratio (P1 ′ / P2 ′) of the seal portion 13 ′ is also 80% or less like the pitch ratio of the seal portion 13, the excrement permeability of the topsheet 10A is not hindered. This is preferable because the absorption performance can be improved. In this case, the pitch ratio of the seal portion 13 and the pitch ratio of the seal portion 13 'do not need to be the same pitch ratio, and different pitch ratios may be used as long as both pitch ratios are 80% or less. good.

  Further, also in the top sheet 10A, it is preferable not to form the seal portions 13 and 13 'in the fecal permeation specific portion 14.

  Further, the surface sheet 10A preferably has an area ratio of the seal portion 13 'of 20% or less similarly to the area ratio of the seal portion 13, and the surface sheet 10A is formed in the CD direction of the sheet. It is preferable that the number of seal portions 13 ′ to be fixed is constant as well as the number of seal portions 13. As a result, the texture of the absorbent article can be impaired, and the feeling of wearing can be prevented from being lowered, and problems occurring during use and manufacturing can be reduced.

  In addition, as a constituent material of the second sheet | seat 16 used for this surface sheet 10A, the thing similar to the top sheet 11 mentioned above can be used.

  Moreover, the surface sheet which concerns on this invention can also change the structure as follows.

  FIG. 6A shows a top view of a surface sheet VI-VI (hereinafter referred to as “the surface sheet 10B”) according to the third embodiment of the present invention, and FIG. A sectional view of A) is shown. The surface sheet 10B is substantially the same as the surface sheets 10 and 10A described above except for the point that the surface sheet 10B includes the top sheet 11 and the second sheet 16. Therefore, the same reference numerals are given to the components corresponding to the topsheets 10 and 10A described above, and the description thereof is omitted.

  That is, as shown in the figure, the top sheet 10 </ b> B is formed by sticking a rectangular second sheet 16 to the back side of the top sheet 11. Specifically, the second sheet 16 is adhered to the back surface of the top sheet 11 via a seal portion 13 ′ formed on the back surface side of the top sheet 11, thereby forming the top sheet 10 </ b> B.

  Hereinafter, the absorptive article concerning the present invention in which the surface sheet mentioned above was used is explained in detail.

  FIG. 7 is a plan view of a tape-type disposable diaper (hereinafter referred to as “the present diaper”) 100 which is an example of an absorbent article according to the present invention, as viewed from the surface side (skin contact surface side). FIG. 8 shows a perspective view of the diaper 100 in use, and FIG. 9 shows a cross-sectional view taken along the line VII-VII in FIG. 9 illustrates only the seal portion 13 of the topsheet 10, and other seal portions (for example, a seal portion for attaching the back sheet and the waterproof film) are omitted (the same applies to FIG. 14). .

  As shown in FIGS. 7 to 9, the present diaper 100 is interposed between the top sheet 10 disposed on the front surface side, the back sheet 20 disposed on the back surface side, and both the sheets 10 and 20. A diaper main body 22 is constituted by the absorbent body 21. Further, the present diaper 100 has an opening (hereinafter referred to as “stool pocket”) for storing and holding excrement in a butt portion contact portion of the diaper main body 22, specifically, a portion where a defecation opening of the wearer of the absorbent body 21 is located. 23) is provided.

  In addition, in this diaper 100, although the surface sheet 10 comprised from the top sheet 11 and mesh sheet 12 which concern on 1st Embodiment mentioned above as a surface sheet is used, surface sheet 10A or 10B is used. The same effect can be obtained.

  In the diaper 100 using the top sheet 10 according to the present invention described above, the sheet is hardly turned up during manufacture or use. Moreover, since it is excellent also in absorption performance, a bodily fluid does not hold | maintain water on the surface sheet 10, and generation | occurrence | production of a blurring, a horizontal leakage, etc. can be prevented.

  The planar shape of the diaper main body 22 is a pseudo hourglass shape, and in the longitudinal direction of both side edges of the absorbent body 21, a gather sheet 24 provided on the front surface side, and an elastic elastic member disposed along the inner edge thereof A solid gather 26 standing on the surface side is formed by 25 g. A side flap portion 100SF not including the absorber 21 is formed by the back sheet 20 portion extending to the side of the side edge of the absorber 21 and the outer sheet portion of the gather sheet 24, and between them. A plurality of elastic elastic members 251 are arranged along the longitudinal direction of the diaper main body 22 so that a pleated flat gather 27 is formed in the side flap portion 100SF.

  In the width direction of the back side region 100B of the main diaper 100, a plurality of elastic elastic members 25w are disposed, thereby forming an end flap portion 100EF. Further, a fastening tape 29 having a male material 28 is connected to the left and right overhanging portions in the back side region 100B of the diaper main body 22, that is, the width direction end of the side panel portion 100SP. Furthermore, a rectangular frontal tape 31 having a female material 30 on the surface is attached to the back side of the abdomen side region 100F of the diaper main body 22, that is, the back sheet 20 of the abdomen side region 100F. As shown, when the male material 28 of the fastening tape 29 is mechanically engaged with the female material 30 of the frontal tape 31, the fastening tape 29 is fastened to the frontal tape 31, and the diaper 100 is worn. In addition, the surface of the frontal tape 31 may be provided with a design including a fastening position mark indicating the fastening position of the fastening tape 29 and a pattern such as an animal that the infant prefers, if necessary.

  The absorbent body 21 may be anything that can absorb and retain excreta, particularly bodily fluids. Usually, a mixture of absorbent polymer powder in fluffy pulp is preferably used in terms of absorption function and price. . Such pulp includes cellulose fibers such as chemical pulp and molten pulp obtained from wood, and artificial cellulose fibers such as rayon and acetate. Softwood pulp having a longer fiber length than hardwood pulp functions and It is preferably used in terms of price. The absorbent body 21 in the present diaper 100 is entirely encased in a water absorbent paper 32 such as crepe paper for the purpose of maintaining the shape and diffusing bodily fluids among the excreta quickly and preventing the excrement once absorbed. The planar shape is formed in a rectangular shape. The water absorbent paper 32 may be omitted depending on the purpose and application of the diaper itself, and the planar shape of the absorbent body 21 is changed to an arbitrary shape such as a pseudo hourglass shape, an oval shape, and a saddle shape.

  As described above, the stool pocket 23 is provided at the buttocks contact portion of the absorber 21. As shown in FIG. 7, the plane shape of the stool pocket 23 is from the buttocks contact portion of the diaper main body 22 (specifically, the portion of the absorbent body 21 where the defecation opening of the wearer is located) toward the back side. It is formed in an almost bowl shape that spreads at the end. Moreover, as shown in FIG. 9, the cross-sectional shape of the stool pocket 23 is formed in a divergent shape toward the surface side of the diaper main body 22, so that excrement disposed from the stool opening, particularly soft stool, can be obtained. It flows smoothly into the stool pocket 23, and is realistic from an operational point of view.

  In addition, the shape of the feces pocket 23 provided in the absorber 21 can be changed into various shapes as shown by a planar shape in FIG. 10 and a cross-sectional shape in FIG. 11, for example.

  That is, the absorbent body 21A shown in FIG. 10 (A) is obtained by forming the plane shape of the stool pocket 23A into a triangle that is widened toward the back side, and the absorbent body 21B shown in FIG. 10 (B) is the stool pocket 23B. The planar shape of the absorbent body 21C shown in FIG. 10 (C), which is formed in a home base shape spreading toward the back side, is the one in which the planar shape of the stool pocket 23C is formed in an elliptical shape, and FIG. 10 (D). The absorbent body 21D shown in FIG. 5 can be changed to various ones such as one in which the planar shape of the stool pocket 23D is formed in a heart shape spreading toward the back side. In addition, although the plane shape of the feces pocket 23 can be made into various shapes other than these, in order to prevent wrinkles and kinks in the absorbent body 21, it is preferable to form it by a straight line rather than a curve.

  Further, with respect to the cross-sectional shape, the absorbent body 21W shown in FIG. 11A has a depth equal to the thickness of the absorbent body 21W, that is, the absorbent body 21W is provided with a through hole to form a stool pocket 23W. The cross-sectional shape of the pocket 23W is formed in a divergent shape toward the surface side of the diaper main body 22, and the absorbent body 21X shown in FIG. 11B is a recess having a depth up to the middle of the thickness direction of the absorbent body 21X. The stool pocket 23X is formed, and the cross-sectional shape of the stool pocket 23X is formed in a rectangular shape. The absorbent body 21Y shown in FIG. 11C has a depth to the middle in the thickness direction of the absorbent body 21Y. The stool pocket 23Y is formed by providing a recess having a cross section, and the absorbent body 21Z shown in FIG. 11D has a depth equal to the thickness of the absorbent body 21Z. , I.e., by providing a through hole in the absorber 21Z form a feces pocket 23Z, it is possible to change the cross-sectional shape of the feces pocket 23Z like those formed in a rectangular shape, a variety of things.

  In the diaper 100, a waterproof film 33 is disposed between the back sheet 20 and the absorbent body 21, and the waterproof film 33 is provided as necessary.

  For the back sheet 20 and the waterproof film 33, a liquid-impermeable material made of a plastic sheet such as polyethylene or polypropylene, a nonwoven fabric, or the like, or a material equivalent thereto is preferably used. Other examples include meltblown or film materials made of polypropylene or polyolefin copolymers. Examples of the copolymer include ethylene vinyl acetate, ethylene methyl acetate, ethylene ethyl acrylate, polyvinyl chloride, and the like. Further, a single spunbonded layer made of each of the above materials, two layers made of spunbonded and a meltblown material, and the like can be given. By using such a spunbonded material, the back sheet 20 can be given a cloth-like feel. In addition to the material having liquid impermeability, a sheet material having air permeability and moisture permeability is applied to the material of the back sheet 20 from the viewpoint of preventing stuffiness. As such a sheet material, a microporous sheet obtained by melting and kneading an inorganic filler in an olefin resin such as polyethylene or polypropylene to form a sheet and then stretching in a uniaxial or biaxial direction is preferable. Used for. Thus, the sheet material having liquid impermeability, air permeability, and moisture permeability is particularly preferably used for the waterproof film 33.

  As the gather sheet 24 that forms the three-dimensional gather 26, a water-repellent nonwoven fabric or a plastic film is effective in preventing leakage of excrement. Therefore, a material having such characteristics or a material obtained by processing these characteristics is selected.

  Usually, a thread-like elastic rubber is applied to the elastic elastic members 25g, 25l, and 25w. As such a rubber material, materials such as styrene rubber, olefin rubber, urethane rubber, ester rubber, polyurethane, polyethylene, polystyrene, styrene butadiene, silicone, and polyester can be used. The material for forming the elastic elastic members 25g, 25l, and 25w is not necessarily limited to such materials. For example, various known elastic materials such as thermoplastic elastomers, plastic sheets, and rubber sheets may be used. Can be used. Of these materials, it is particularly preferable to use a thermoplastic elastomer. Examples of the thermoplastic elastomer include styrene elastomers, olefin elastomers, polybutadiene elastomers, polyester elastomers, polyamide elastomers, and urethane elastomers. Various known materials such as vinyl chloride elastomers, fluorine elastomers, ionomer resins and silicone resins can be used. These thermoplastic elastomers may be used alone or in combination of two or more. Among these, it is particularly preferable to use a styrene elastomer or an olefin elastomer.

  As mentioned above, although content was described about the absorbent article which concerns on this invention about one Embodiment, the structure of the absorbent article which concerns on this invention can also be changed into various things as follows.

  FIG. 12 shows a plan view of a pants-type disposable diaper (hereinafter referred to as “the present diaper 100A”), which is another example of the absorbent article according to the modified example of the present invention, viewed from the surface side, FIG. 13 is a perspective view of the diaper 100A in use, and FIG. 14 is a cross-sectional view taken along line XII-XII in FIG. The other configuration of the diaper 100A is substantially the same as that of the diaper 100 described above except that the absorbent body 21 'in which no stool pocket is formed is used. Therefore, the same code | symbol is attached | subjected to the component corresponding to the component of the diaper 100 mentioned above, and the description is abbreviate | omitted.

  As shown in FIGS. 12 to 14, the present diaper 100 </ b> A is similar to the above-described diaper 100, the top sheet 10 </ b> A ′ disposed on the front side, the back sheet 20 disposed on the back side, and these The diaper main body 22 is comprised by the absorber 21 'interposed between both sheets 10A' and 20.

  The present diaper 100A relates to a modified example of the topsheet 10A composed of the topsheet 11, the mesh sheet 12, and the second sheet 16 according to the above-described second embodiment as a topsheet, and the mesh sheet 12 is a topsheet. The top sheet 10A ′ that is provided on the top surface of the sheet 11 and only at the center in the width direction of the top sheet 11 is used. In addition, this diaper 100A can also be formed using the surface sheet 10,10A, 10B mentioned above as a surface sheet similarly to the diaper 100 mentioned above. Thereby, since the usage-amount of the mesh sheet | seat 12 can be reduced, manufacturing cost can be reduced by that much.

  The contents of the present invention have been described above for the case where the absorbent article is a disposable diaper for infants or adults. However, the present invention is not limited to such a disposable diaper. Furthermore, the present invention can also be applied to various absorbent articles known in the art, such as training pants for infants.

It is a figure which shows the surface sheet which concerns on this invention. It is a top view which shows the example of a change of the formation pattern of the seal part of the surface sheet which concerns on this invention. It is a top view which shows the other example of a change of the formation pattern of the seal part of the surface sheet which concerns on this invention. It is a top view which shows the other example of a change of the formation pattern of the seal part of the surface sheet which concerns on this invention. It is a figure which shows the surface sheet which concerns on the example of a change of this invention. It is a figure which shows the surface sheet which concerns on the other modification of this invention. It is an expansion top view of a tape type disposable diaper which is an absorptive article concerning the present invention. It is a perspective view at the time of use of the diaper shown in FIG. It is VII-VII sectional drawing of FIG. It is a top view which shows the example of a change of the feces pocket of the absorbent article which concerns on this invention. It is sectional drawing which shows the example of a change of the feces pocket of the absorbent article which concerns on this invention. It is an expansion | deployment top view of the underpants type disposable diaper which is the example of a change of the absorbent article which concerns on this invention. It is a perspective view at the time of use of the diaper shown in FIG. It is XII-XII sectional drawing of FIG. It is a top view which shows the conventional surface sheet.

Explanation of symbols

10, 10A, 10B, 10A ', 50 Top sheet 11 Top sheet 12 Mesh sheet 13, 13', 51 Seal part 14, 52 Stool permeation specific part 15 Opening 16 of mesh sheet 12 Second sheet 100, 100A Disposable diaper (absorption) Sex goods)
20 Back sheets 21, 21A to 21D, 21W to 21Z Absorber 22 Diaper body (article body)
23, 23A-23D, 23W-23Z Stool pocket 24 Gather sheets 25g, 25l, 25w Elastic elastic member 26 Solid gather 27 Flat gather 32 Water absorbent paper 33 Waterproof film 100SF Side flap part 100EF End flap part 100SP Side panel part 100B Back side area 100F Ventral region

Claims (3)

The article main body is configured to include at least a top sheet disposed on the front surface side, a back sheet disposed on the back surface side, and an absorbent body interposed between the sheets. In the absorbent article in which a stool pocket having a depth in the thickness direction of the absorbent body is provided at the contact portion, the topsheet is a topsheet having a large number of seal portions formed on the surface side, and a non-woven fabric. And a mesh sheet having a fine opening is attached through the seal portion, the mesh sheet is formed to be narrower than the width of the top sheet, and the size of the opening is The seal portion is formed smaller than the size of the seal portion, and the plurality of seal portions are composed of a plurality of rows arranged in the MD direction of the topsheet, and the number of seal portions in each row is constant, and the MD direction Kicking pitch is set smaller as towards the end flaps of the absorbent article, and an absorbent article which is characterized in that it is formed in a portion except for the portion facing the flight pocket of said topsheet. The absorbent article according to claim 1, wherein a pitch ratio of the seal portions is 80% or less. The absorbent article according to claim 1 or 2, wherein the surface sheet has an area ratio of the seal portion of 0 to 20%.

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