JP5384682B2 - Absorbent articles - Google Patents

Description

  The present invention relates to an absorbent article that suppresses skin troubles.

Absorbent articles such as sanitary napkins, panty liners, incontinence pads, disposable paper diapers are generally impervious sheets such as polyethylene sheets or polyethylene sheet laminated nonwoven fabrics and liquid permeable surfaces such as nonwoven fabrics or liquid permeable plastic sheets. It has a structure in which an absorbent body made of cotton pulp or the like is interposed between the sheet and the sheet.
In this type of absorbent article, in recent years, various kinds of functional materials, for example, skin care substances added to a surface sheet or the like have been proposed for the gentleness of the wearer to the skin. For example, an oil-soluble skin astringent such as an oil-soluble polyphenol so as not to cause fogging even when worn for a long time (see Patent Document 1), tannin on an absorbent base material to prevent diaper fogging, Reduces irritation with skin containing polyphenols such as gallic acid (see Patent Document 2), application of pH adjuster to absorbent articles to prevent fogging (see Patent Document 3) Therefore, a product containing a lotion composition (see Patent Document 4) has been proposed.
In addition, the present inventor has proposed that a phosphorylcholine group-containing polymer is applied to the skin contact sheet so as not to cause skin troubles even if the person is allergic to chemical or physical irritation. (Patent Document 5). The phosphorylcholine group-containing polymer is a kind of biocompatible substance, and has a moisturizing property, ability to form a protective film, and an effect of suppressing rough skin, and is suitable for a person who is sensitive to chemical or physical irritation. Is particularly preferable as a moisturizing agent for absorbent articles because it can effectively eliminate skin troubles such as fogging, rubbing, and rough skin.

JP 2003-12490 A Japanese Patent Laid-Open No. 3-268751 Japanese Patent Laid-Open No. 2-1265 Special Table 2000-505682 JP 2006-271852 A

However, when a phosphorylcholine group-containing polymer is applied to the skin contact sheet, the hydrophilicity of the skin contact sheet is improved, and liquid residue (water retention) is generated in the skin contact sheet when excretion is absorbed. In the process. When there is such a liquid residue, the wet feeling and the sticky feeling become high, and the wearing feeling deteriorates. Further, the remaining liquid in the skin contact sheet may cause skin troubles depending on the degree.
SUMMARY OF THE INVENTION An object of the present invention is to provide an absorbent article that can supply a skin care substance having a moisturizing effect to the skin while suppressing the deterioration of the wearing feeling due to the liquid residue and the occurrence of skin troubles.

The present invention that has solved the above problems is as follows.
<Invention of Claim 1>
The surface of the skin contact sheet that comes into contact with the skin has a recess by embossing with a width of 1 to 10 mm and a depth of 1 to 5 mm, and a phosphorylcholine group-containing polymer is applied as a humectant only to the bottom of the recess,
During wearing, the skin contact sheet is compressed in the thickness direction with a compressive force equal to or higher than a predetermined level, the concave portion is crushed, and the bottom of the concave portion is pushed up to the skin side to supply the moisturizing agent to the skin. When the compressive force applied in the thickness direction of the skin contact sheet is less than a predetermined level , the bottom of the recess is held at a position far from the skin and is configured not to contact the skin.
An absorbent article characterized by the above.

(Function and effect)
In the present invention, a recess having a width of 1 to 10 mm and a depth of 1 to 5 mm is formed on the surface of the skin contact sheet, a moisturizing agent is applied to the bottom of the recess, and the moisturizing agent is near the top of the recess and on the outside of the recess. When the skin contact sheet is compressed in the thickness direction with a compressive force equal to or higher than a predetermined level, such as when the wearer takes a sitting position, the concave portion is crushed and the bottom is pushed up to the skin side. Supplies moisturizer to the skin by touching the skin. When the wearer is standing, etc., when the compressive force applied in the thickness direction of the skin contact sheet is less than a predetermined level, the recess is not crushed at all, and the bottom is held away from the skin and does not contact the skin. . Therefore, while the skin care substance having a moisturizing effect can be supplied to the skin, the moisturizing application site where the hydrophilicity becomes high at the time of absorption is maintained at a position far from the skin, and the hydrophilicity of the skin contact part is high as in the past. Don't be. In addition, the hydrophilicity of the bottom of the concave portion of the skin contact sheet is relatively high, and the liquid content of the skin contact sheet is easily transferred to the bottom of the concave portion. As a result, the bottom surface of the skin contact sheet is changed from the bottom of the concave portion. It becomes easy to move to a member. Therefore, compared with the case where the moisturizer is not simply applied to the skin contact sheet, there is no inferior effect in preventing the deterioration of the wearing feeling due to the remaining liquid of the skin contact sheet and preventing skin troubles.

<Invention of Claim 2>
The absorbent article according to claim 1, wherein the skin contact sheet is a nonwoven fabric, a film, or a laminate sheet of a nonwoven fabric and a film having a basis weight of 10 to 100 g / m ² and a thickness of 0.1 to 10 mm.

(Function and effect)
When the material of the skin contact sheet is within the range described in this section, it is advantageous for exerting the effect of the present invention.

<Invention of Claim 3>
The concave portions of the skin contact sheet have an opening area of 3 to 400 mm ² , and are provided on the surface of the skin contact sheet in the form of dots at intervals of 0.1 to 10 mm in the front-rear direction and 0.1 to 10 mm in the width direction. The absorbent article according to claim 1 or 2, wherein

(Function and effect)
As described in this section, it is preferable that the concave portions having the dimensions described in this section are provided in the form of scattered dots because the moisturizing agent can be supplied uniformly to a predetermined range of the skin.

<Invention of Claim 4>
The depth of the recessed part provided in the one part area | region of the said skin contact sheet is deeper than the depth of the recessed part provided in the other area | region of the said skin contact sheet. Absorbent articles.

(Function and effect)
In the present invention, the depth of the unevenness can be changed according to the unevenness of the body surface, for example, according to the site on the surface of the skin contact sheet. Specifically, it is preferable to reduce the depth of the concave portion of the skin contact sheet in the portion corresponding to the concave portion on the body surface, and to increase the depth of the concave portion of the skin contact sheet in the portion corresponding to the convex portion on the body surface. Thereby, the moisturizing agent supply action by the crushing of the recessed part of this invention can be exhibited uniformly.

<Invention of Claim 5>
An absorbent body is interposed between the liquid-permeable top sheet and the back sheet,
The skin contact sheet is the top sheet,
At least one of a recessed portion in which a concave portion by embossing of the skin contact sheet is accommodated and a bulging portion in contact with a bottom portion of the concave portion by embossing of the skin contact sheet is provided on the skin contact sheet side surface of the absorbent body. The absorbent article of any one of Claims 1-4 currently provided.

(Function and effect)
The structure which covers the surface side of an absorber with the surface sheet which is a skin contact sheet like description of this term is employ | adopted in many types of absorbent articles. The invention described in this section is based on this structure, and is formed on the surface of the absorbent body on the skin contact sheet side, in which the recess of the skin contact sheet is accommodated, and the bulge that contacts the bottom of the recess of the skin contact sheet At least one of the above is provided. In this case, since the absorber has high rigidity, the recess of the skin contact sheet is hardly crushed by the recess, and the recess of the skin contact sheet is easily crushed by the bulge. Therefore, for example, in the absorber, it is preferable to provide a bulging portion at a portion corresponding to the concave portion on the body surface and to provide a recess portion at a portion corresponding to the convex portion on the body surface. Thereby, the crushing action of the recessed part of this invention can be exhibited uniformly.

<Invention of Claim 6>
The phosphorylcholine group-containing polymer, wherein the content per unit area in the coating portion is the 0.021 g / m ² or more in terms of solid content, the absorbent according to any one of claims 1 to 5 Goods.

(Function and effect)
If the content of the phosphorylcholine group-containing polymer is in the range described in this section, a sufficient effect is exhibited. In the present invention, even if the coating amount of the phosphorylcholine group-containing polymer is increased, a liquid residue as in the conventional case is hardly generated, so that the coating amount can be increased as compared with the conventional case, for example, 0.35 g / m ² or more. It can also be.

<Invention of Claim 7>
The absorbent article according to any one of claims 1 to 6, wherein the absorbent article is a sanitary napkin, a panty liner, an incontinence pad, or a disposable paper diaper.

(Function and effect)
The present invention is particularly suitable for these absorbent articles.

  As described above, according to the present invention, while it is possible to supply a skin care substance having a moisturizing effect to the skin, it is possible to suppress the deterioration of the wearing feeling due to the liquid residue and the occurrence of skin troubles. It is.

It is a partially broken perspective view of a sanitary napkin. It is a top view which shows the other example of the sanitary napkin. It is a partially broken perspective view of a disposable diaper. It is a principal part expanded sectional view. It is the schematic which shows a manufacturing method. It is the schematic which shows a manufacturing method.

  The present invention is used for absorbent articles such as sanitary napkins, panty liners, incontinence pads, and disposable paper diapers. FIG. 1 is a partially broken perspective view of a thin sanitary napkin 1. This sanitary napkin 1 includes an absorbent 4 or a crepe paper between a liquid-impermeable back sheet 2 and a liquid-permeable surface sheet 3 (hereinafter simply referred to as a surface sheet), as shown in FIG. The absorbent body 4 surrounded by 5 is interposed, and a hydrophilic intermediate sheet (second sheet) 6 is disposed between the top sheet 3 and the absorbent body 4. Around the absorber 4, the liquid-impermeable back sheet 2 and the top sheet 3 are joined by an adhesive means such as a hot melt adhesive.

  The liquid-impervious back sheet 2 is made of a sheet material having at least water shielding properties such as polyethylene, polypropylene, etc. In addition to this, a non-woven fabric sheet ( In this case, a water-impermeable back sheet is comprised with a waterproof film and a nonwoven fabric.) Etc. can be used. In recent years, those having moisture permeability tend to be suitably used from the viewpoint of preventing stuffiness. The water- and moisture-permeable sheet material is a microporous material obtained by melting and kneading an inorganic filler in an olefin-based resin such as polyethylene or polypropylene to form a sheet, and then stretching in a uniaxial or biaxial direction. A sheet is preferably used.

  As the absorbent body 4, for example, a material in which a highly water-absorbing resin is mixed in pulp or a material in which chemical fibers are mixed in a pulp and a material having a highly water-absorbing resin is mixed is used. As shown in the figure, it is desirable that the absorbent body 4 is wrapped in an absorbent sheet 5 such as crepe paper in order to keep its shape and rapidly diffuse menstrual blood and prevent reverse return of menstrual blood once absorbed. Examples of pulp include cellulose fibers such as chemical pulp and molten pulp obtained from wood, and artificial cellulose fibers such as rayon and acetate. Softwood pulp with a longer fiber length is more functional and more expensive than hardwood pulp. It is preferably used in terms of

  Examples of the highly water-absorbing resin include polyacrylate cross-linked products, self-crosslinked polyacrylates, saponified acrylate-vinyl acetate copolymer cross-linked products, cross-linked isobutylene / maleic anhydride copolymer, polysulfone Examples include cross-linked acid salts, and partially cross-linked water-swellable polymers such as polyethylene oxide and polyacrylamide. Among these, those based on acrylic acid or acrylate that are excellent in water absorption and water absorption speed are preferred. A highly water-absorbing resin having water absorption performance can adjust the water absorption force and the water absorption speed by adjusting the crosslinking density and the crosslinking density gradient in the production process.

It is desirable that the basis weight of the absorbent 4 is about 50 to 600 g / m ² and the thickness is about 1 to 50 mm. Also, the basis weight of the superabsorbent polymer is desirably about 1~600g / m ^2. If the content of the superabsorbent resin is too small, sufficient absorbability cannot be provided, and if it is too large, the entanglement between the pulp fibers is lost, and twisting or cracking is likely to occur.

  As the surface sheet 3, a perforated or non-porous nonwoven fabric or a porous plastic film sheet is preferably used. Examples of the material fibers constituting the nonwoven fabric include synthetic fibers such as polyethylene or polypropylene, synthetic fibers such as polyester and polyamide, recycled fibers such as rayon and cupra, and natural fibers such as cotton. A nonwoven fabric obtained by an appropriate processing method such as a lace method, a spun bond method, a thermal bond method, a melt blown method, a needle punch, an air through method, or a point bond method can be used. As the plastic film sheet, for example, olefin resins such as polyethylene and polypropylene, polyamide resins such as polyester and nylon, ethylene-vinyl acetate copolymer (EVA), and the like can be preferably used.

  Characteristically, as shown in FIG. 3, the surface sheet 3 has a recess 3c having a width (diameter) of 1 to 10 mm and a depth of 1 to 5 mm on the surface, and a moisturizing agent is placed on the bottom b in the recess 3c. It is applied, and the moisturizing agent is not applied to the vicinity of the upper portion of the recess 3c and the portion outside the recess 3c. The moisturizing agent may or may not be applied near the bottom b of the recess 3c. The recess 3c is preferably protruded as a convex portion on the back side as shown in the figure, but may not protrude on the back side.

  When such a top sheet 3 is provided, when the top sheet 3 is compressed in the thickness direction with a compressive force of a predetermined level or more, such as when the wearer takes a sitting position, the recess 3c is crushed and its bottom b is skin side The moisturizer is transferred to the skin when the bottom b of the recess 3c comes into contact with the skin. In the case of the illustrated embodiment, the crushing of the recess 3c is the same as the crushing of the rear side protruding portion (projection) of the recess 3c. On the other hand, when the wearer is standing or the like, when the compressive force applied in the thickness direction of the topsheet 3 is less than a predetermined level, the recess 3c is not crushed at all or is hardly crushed and the bottom b is held at a position far from the skin. Does not come into contact with skin. Therefore, the moisturizer application site where the hydrophilicity becomes high at the time of absorption is maintained at a position far from the skin while the moisturizer can be supplied to the skin, and the hydrophilicity of the skin contact portion does not increase as in the conventional case. In addition, the hydrophilicity at the bottom b of the recess 3c of the top sheet 3 is relatively high, and the liquid content of the top sheet 3 is likely to move to the bottom b of the recess 3c, resulting in the surface from the bottom b of the recess 3c to the surface. It becomes easy to shift to a member on the back surface side of the sheet 3 (in the illustrated form, the intermediate sheet 6 and the absorber 4).

The material used for the top sheet 3 is preferably a nonwoven fabric, a film, or a laminate sheet of a nonwoven fabric and a film having a basis weight of 10 to 100 g / m ² and a thickness of about 0.1 to 10 mm. If it is out of this range, the compression / restoration property of the surface sheet 3 is lowered, and the recess 3c may not be sufficiently crushed or may not be restored after the recess 3c is crushed.

As the recess 3c, it is preferable that a predetermined shape such as a circle or a polygon is provided in a scattered shape. In this case, the opening area of the recess 3c is 3 to 400 mm ² and 0.1 to 10 mm. Are preferably provided with a distance d2 in the front-rear direction and a distance d1 in the width direction of 0.1 to 10 mm. In addition, it is also a preferable form to provide groove-like recesses in a stripe shape or a lattice shape. In this case as well, each groove-like portion has an interval in the front-rear direction of 0.1 to 10 mm and / or a width of 0.1 to 10 mm. It is preferable that they are provided at intervals in the direction. The concave portion 3 c may be provided only in a partial region of the top sheet 3.

  The degree of compression in the thickness direction applied to the top sheet 3 varies depending on the part of the body surface that comes into contact. Therefore, the depth of the unevenness is changed according to the part of the surface sheet 3, the depth of the recess 3 c of the surface sheet 3 is made shallower in the part corresponding to the recess on the body surface, and the part corresponding to the recess on the body surface It is preferable to increase the depth of the recess 3c of the topsheet 3. For example, in the case of women, the concave portion 3c of the topsheet 3 is made shallower than the other portions in the portions corresponding to the urination port, blood discharge port, and defecation port, and in the case of men, the concave portion is formed in the urination port portion. If the recess 3c of the surface sheet 3 is made shallower at a portion corresponding to the defecation opening, the moisturizing agent supplying action due to the collapse of the recess 3c can be exhibited evenly.

  For the same purpose, as shown in FIG. 2 and FIG. 3 to be described later, the recess 4c in which the concave portion 3c of the topsheet 3 is accommodated and the concave portion of the topsheet 3 on the surface of the absorbent body 4 on the topsheet 3 side. It is also a preferable form to provide at least one of the bulging portions 4b that come into contact with the bottom of the bulge. The number of the recesses 3c accommodated in one recess 4c and the number of the recesses 3c in contact with one bulge 4b may be plural or one. When such a dent 4c and a bulging part 4b are provided, the rigidity of the absorber 4 is relatively high, so that the recess 3c that fits in the dent 4c is not easily crushed, and the recess 3c on the bulge 4b. Will be crushed easily. Therefore, for example, in the case of women, the bulging portion 4b is provided in the portion corresponding to the urination port, blood discharge port, and defecation port in the absorber 4, and in the case of men, the portion of the urination port in the absorber 4 is provided. If the dent 4c is provided and the bulging part 4b is provided at the portion corresponding to the defecation opening, the moisturizing agent supply action due to the collapse of the recess can be exhibited evenly. In addition, since the hollow part 4c and the bulging part 4b of such an absorber 4 can be easily manufactured only by changing the molding shape at the time of fiber stacking when the absorber 4 is a pulp fiber stack, It is preferable.

  The intermediate sheet 6 disposed between the top sheet 3 and the absorber 4 is preferably one having hydrophilicity with respect to the body fluid. Specifically, by using recycled fibers such as rayon and cupra, natural fibers such as cotton, the material itself has hydrophilicity, or synthesis of olefins such as polyethylene or polypropylene, polyesters, polyamides, etc. The fiber which surface-treated with the hydrophilizing agent and provided the hydrophilic property can be used. However, it is preferable that the convexity of the topsheet 3 is the highest in hydrophilicity, and then the concaveness of the topsheet 3 and the intermediate sheet 6 are lowered in this order. The intermediate sheet 6 can be bonded to the top sheet 3 by hot melt adhesive, ultrasonic sealing, heat sealing, heat embossing or the like.

As the humectant of the present invention, a phosphorylcholine group-containing polymer is used. The phosphorylcholine group-containing polymer is a polymer of 2-methacryloyloxyethylphosphocholine (MPC) having both a phospholipid polar group (phosphorylcholine group) that is a component of a biological membrane and a polymerizable methacryloyl group in one molecule ( Hereinafter referred to as MPC polymer). An excellent moisturizing effect can be given by attaching the MPC polymer to the skin. Furthermore, the MPC polymer forms a hydrated film on the skin surface, thereby blocking physical irritation such as rubbing and chemical irritation by body fluids. It is possible to effectively prevent skin troubles such as blurring, itching, rubbing, and rough skin. In particular, since the MPC polymer has high biocompatibility, even an allergic person can expect the same effect. The content per unit area in the coated part of the MPC polymer is preferably 0.021 g / m ² or more in terms of solid content. If the amount applied is too small, the skin irritation suppressing effect cannot be expected. The larger the coating amount of MPC polymer, the better. However, from the viewpoint of cost effectiveness, it is preferably 1.0 g / m ² or less, particularly preferably 0.5 g / m ² or less.

  On the other hand, the following method is proposed as a method for manufacturing the topsheet 3. That is, as shown in FIG. 5, the first method is an abutment with an embossing roll (corresponding to a concavo-convex roll) 10 having a predetermined pattern on the outer peripheral surface, and the outer peripheral surface of the embossing roll 10. An emboss receiving roll (corresponding to an opposing roll) 11 having an outer peripheral surface pressed against the unevenness of the outer peripheral surface, a transfer roll 12 having a smooth outer peripheral surface in contact with the outer peripheral surface of the embossing roll 10, and the transfer roll 12 Humectant supply means 13 for supplying a humectant to the outer peripheral surface of the film (in the illustrated embodiment, a storage portion of the humectant liquid 14 in which the lower part of the transfer roll is immersed) is used. As the emboss receiving roll 11, a rubber roll that does not have unevenness on the outer peripheral surface, or a roll that has unevenness that fits into the unevenness of the embossing roll 10 can be used.

  The sheet material 20 is sandwiched between the embossing roll 10 and the embossing receiving roll 11, and after being embossed by the unevenness on the outer peripheral surface of the embossing roll 10, the fit between the sheet material and the unevenness on the outer peripheral surface of the embossing roll is pressed. While maintaining the state, only the portion of the sheet material 20 that is sandwiched between the embossing roll 10 and the transfer roll 12 and overlaps the convex portion of the outer peripheral surface of the embossing roll 10 is brought into contact with the outer peripheral surface of the transfer roll 12, so The moisturizing agent supplied to the outer peripheral surface of the transfer roll 12 by the agent supply means 13 is applied only to the portion of the sheet material 20 that overlaps the convex portion of the outer peripheral surface of the embossing roll 10. Thus, a sheet in which the moisturizing agent is applied only to the bottom of the recess by embossing can be obtained.

  In addition, in order to maintain the fitting state of the sheet material 20 and the embossing roll 10 at the time of embossing, when the tension of the sheet material 20 is not sufficient, an intake hole is provided on the outer peripheral surface of the embossing roll 10 as necessary. Many sheets can be provided and the sheet material 20 can be kept in a fitted state by suction from the embossing roll 10. Moreover, when using the roll which has the unevenness | corrugation fitted to the unevenness | corrugation of the embossing roll 10 as an embossing receiving roll 11, the transfer roll 12 is contact | abutted by making this embossing receiving roll 11 into an uneven | corrugated roll, A sheet material after embossing may be sandwiched between the transfer roll 12 and the moisturizing agent may be transferred (not shown). Further, as the transfer roll 12, a roll having a predetermined pattern corresponding to the embossing roll 10 can be used as in the second method described below.

  As shown in FIG. 6, the second method includes an embossing roll (corresponding to an unevenness roll) 10 having a predetermined pattern on the outer circumferential surface, and an outer circumferential surface of the embossing roll 10. The embossing receiving roll (corresponding to the opposing roll) 11 having a surface pressed against the unevenness of the surface, the transfer roll 15 having the unevenness of a predetermined pattern corresponding to the embossing roll 10, and supplying a moisturizing agent to the outer peripheral surface of the transfer roll 15 The humectant supply means 13 (similar to the first method) is used.

  The sheet material 20 is sandwiched between the embossing roll 10 and the embossing receiving roll 15, and after being embossed by the unevenness on the outer peripheral surface of the embossing roll 20, the unevenness of the sheet material 20 matches the unevenness on the outer peripheral surface of the transfer roll 15. Only the moisturizing agent that is in contact with the transfer roll 15 and supplied to the convex portion of the outer peripheral surface of the transfer roll 15 by the moisturizing agent supplying means 13 is applied to the sheet material 20. Thus, a sheet in which the moisturizing agent is applied only to the bottom of the recess by embossing can be obtained. As can be seen from the second method, the embossing step and the moisturizing agent applying step can be divided into two steps.

(Other)
In the above example, the sanitary napkin in which the contact surface with the skin is only the top sheet 3 has been described. However, as shown in FIG. In the case of the sanitary napkin 1A in which the three-dimensional gathers 7 and 7 are formed by the above, the moisturizer holding sheet 6 similar to the above example is interposed on the back side of the top sheet 3, and the three-dimensional gathers 7 and 7 and / or The moisturizing agent holding sheet 6 similar to the above example may be interposed on the back surface side of the side nonwoven fabrics 9 and 9. That is, the three-dimensional gathers 7 and 7 and the side nonwoven fabrics 9 and 9 are different from the top sheet 3 and do not have the absorber 4 on the back side, but are in contact with the skin, and the skin of the present invention. It is included in the contact sheet. These three-dimensional gathers 7 and 7 and side nonwoven fabrics 9 and 9 also have a technical significance in applying the present invention because they become a portion into which the excrement liquid penetrates.

  Moreover, in the above example, the sanitary napkin in which the contact surface with the skin is only the top sheet 3 has been described. However, as shown in FIG. In the case of the sanitary napkin 1A in which the three-dimensional gathers 7 and 7 are formed of the side nonwoven fabric, the surface sheet 3 is provided with irregularities and a moisturizing agent is applied in the same manner as in the above example, and the three-dimensional gathers 7 and 7 and / or The side nonwoven fabrics 9 and 9 may be provided with irregularities, and a moisturizing agent may be applied similarly to the above example. That is, such three-dimensional gathers 7 and 7 and side nonwoven fabrics 9 and 9 do not have an absorber on the back side, unlike the surface sheet 3, but are in contact with the skin, and the skin contact of the present invention. It is included in the sheet. These three-dimensional gathers 7 and 7 and side nonwoven fabrics 9 and 9 also have a technical significance in applying the present invention because they become a portion into which the excrement liquid penetrates.

  In the above example, the case where the present invention is applied is described taking the sanitary napkin as an example. However, as shown in FIG. 3, it can be applied to the disposable paper diaper 1B in exactly the same manner. Therefore, the same reference numerals are given in FIG. Although not shown, the present invention can also be applied to other absorbent articles such as panty liners and incontinence pads.

  DESCRIPTION OF SYMBOLS 1 ... Sanitary napkin, 2 ... Impervious back sheet, 3 ... Impervious surface sheet, 4 ... Absorber, 5 ... Crepe paper, 6 ... Second sheet.

Claims (7)

The surface of the skin contact sheet that comes into contact with the skin has a recess by embossing with a width of 1 to 10 mm and a depth of 1 to 5 mm, and a phosphorylcholine group-containing polymer is applied as a humectant only to the bottom of the recess,
During wearing, the skin contact sheet is compressed in the thickness direction with a compressive force equal to or higher than a predetermined level, the concave portion is crushed, and the bottom of the concave portion is pushed up to the skin side to supply the moisturizing agent to the skin. When the compressive force applied in the thickness direction of the skin contact sheet is less than a predetermined level , the bottom of the recess is held at a position far from the skin and is configured not to contact the skin.
An absorbent article characterized by the above. The absorbent article according to claim 1, wherein the skin contact sheet is a nonwoven fabric, a film, or a laminate sheet of a nonwoven fabric and a film having a basis weight of 10 to 100 g / m ² and a thickness of 0.1 to 10 mm. The concave portions of the skin contact sheet have an opening area of 3 to 400 mm ² , and are provided on the surface of the skin contact sheet in the form of dots at intervals of 0.1 to 10 mm in the front-rear direction and 0.1 to 10 mm in the width direction. The absorbent article according to claim 1 or 2, wherein   The depth of the recessed part provided in the one part area | region of the said skin contact sheet is deeper than the depth of the recessed part provided in the other area | region of the said skin contact sheet. Absorbent articles. An absorbent body is interposed between the liquid-permeable top sheet and the back sheet,
The skin contact sheet is the top sheet,
At least one of a recessed portion in which a concave portion by embossing of the skin contact sheet is accommodated and a bulging portion in contact with a bottom portion of the concave portion by embossing of the skin contact sheet is provided on the skin contact sheet side surface of the absorbent body. The absorbent article of any one of Claims 1-4 currently provided. The phosphorylcholine group-containing polymer, wherein the content per unit area in the coating portion is the 0.021 g / m ² or more in terms of solid content, the absorbent according to any one of claims 1 to 5 Goods.   The absorbent article according to any one of claims 1 to 6, wherein the absorbent article is a sanitary napkin, a panty liner, an incontinence pad, or a disposable paper diaper.

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