JP5766937B2 - Disposable diapers - Google Patents

Description

  The present invention relates to a disposable diaper such as a deployable disposable diaper and a pants-type disposable diaper.

Conventionally, various disposable diapers to which a skin care agent is applied have been proposed.
For example, Patent Document 1 describes a disposable diaper in which a skin care composition is disposed on a cuff or a cuff and a top sheet. Patent Document 1 describes that the skin care composition is selected to improve the barrier properties of cuffs.
However, Patent Document 1 does not describe at all that the skin care composition to be arranged on the top sheet contains a diamide derivative.

With regard to the diamide derivative, the present applicant firstly has a water-soluble skin care agent on the surface sheet, and is an oily skin care comprising a specific diamide derivative on the water-soluble skin care agent and on the skin side of the water-soluble skin care agent. The absorbent article in which an agent exists was proposed (refer patent document 2, patent document 3).
However, in Patent Documents 2 and 3, the surface sheet is less likely to absorb body fluid, and a skin care composition having a high skin care effect is applied, so that the body fluid does not easily permeate into the three-dimensional gathers or leg gathers. There is no description about applying a skin care composition having a high skin care effect and applying the skin care composition separately at each site.

Special table 2002-509457 gazette Japanese Patent No. 4084278 Japanese Patent No. 4084279

  Therefore, the subject of this invention is providing the disposable diaper which can eliminate the fault which the prior art mentioned above has.

  The present invention comprises a liquid-permeable top sheet, a liquid-impermeable back sheet, and a vertically long absorber disposed between the sheets, and a pair of three-dimensional gathers and / or on both sides in the vertical direction. A pair of leg gathers is a disposable diaper formed by disposing an elastic member, respectively, and a hydrophilic agent that hydrophilizes the surface sheet is held on a part or the whole of the surface sheet, and a pair of three-dimensional A skin care agent that is also a water repellent for repelling gathers is retained in part or all of the gather and / or the pair of leg gathers, and the hydrophilic agent is a skin care agent containing a specific diamide derivative. A disposable diaper is provided.

  According to the disposable diaper of the present invention, the skin care effect on the skin is high and the leak-proof property is also excellent.

FIG. 1 is a plan view showing a partially broken state in which the unfolded disposable diaper according to the first embodiment of the present invention is expanded and expanded. 2 is a cross-sectional view taken along line X1-X1 of FIG. FIG. 3 is a plan view (corresponding to FIG. 1) showing a partially broken state in which the unfolded disposable diaper according to the second embodiment of the present invention is extended and expanded. 4 is a cross-sectional view taken along line X2-X2 of FIG. 3 (corresponding to FIG. 2). FIG. 5 is a plan view (corresponding to FIG. 1) showing a partially broken state in which the unfolded disposable diaper according to the third embodiment of the present invention is expanded and expanded. 6 is a cross-sectional view taken along line X3-X3 of FIG. 5 (corresponding to FIG. 2). FIG. 7 is a development plan view of a pants-type disposable diaper according to a fourth embodiment of the present invention, which is expanded and viewed from the surface sheet side, and shows the application position of the water repellent agent to be held on the outer layer body. It is a figure explaining. FIG. 8 is a developed plan view of the pants-type disposable diaper according to the fifth embodiment of the present invention, which is expanded and viewed from the top sheet side, and shows the application position of the water repellent agent to be held by the outer layer body. It is a figure explaining.

  Hereinafter, the disposable diaper of this invention is demonstrated, referring FIGS. 1-2 based on the preferable 1st Embodiment.

  A disposable diaper 1A of the first embodiment (hereinafter also referred to as “diaper 1A”) is disposed between a liquid-permeable top sheet 21, a liquid-impermeable back sheet 22, and the sheets 21, 22. 1 and 2, a pair of three-dimensional gathers 3, 3 and a pair of leg gathers 4, 4 are provided on both sides 1s, 1s in the longitudinal direction (Y direction), as shown in FIGS. These are so-called unfolded disposable diapers formed by arranging elastic members 30 and 40, respectively. As shown in FIG. 1, the diaper 1A is formed symmetrically with respect to a center line CL extending in the longitudinal direction of the diaper 1A. The “Y direction” shown in each figure is a direction parallel to the center line CL, and is also the same direction as the vertical direction of the diaper. The “X direction” shown in each figure is a direction orthogonal to the center line CL, and is also the same direction as the width direction of the diaper.

The diaper 1A will be described in detail. As shown in FIG. 1, the diaper 1A includes a topsheet 21, a backsheet 22, and an absorber 23 disposed between the sheets 21 and 22, as shown in FIG. A pair of fastenings extending outward in the X direction to the absorbent body 2 divided into the ventral side A, the back side B, and the crotch C, and both sides 2s, 2s of the back side B of the absorbent body 2 The tape 5, 5 and the abdomen A of the absorbent main body 2 have a target sheet (not shown) that engages with the fastening tape 5.
The ventral part A is a part located on the abdomen side of the wearer at the time of wearing, the dorsal part B is a part located on the dorsal side of the wearer at the time of wearing, and the crotch part C is a part of the ventral part A and the dorsal part. It is a part arranged between B.

  As shown in FIG. 1, the absorbent main body 2 has a shape that is long in the Y direction, and both side edges in the Y direction are constricted inwardly in the central portion in the Y direction, and the width of both end portions in the Y direction. However, it is wider than the width of the central part in the Y direction. As shown in FIG. 1, the absorbent main body 2 includes a liquid-permeable top sheet 21 that forms the inner surface of the diaper 1 </ b> A, a liquid-impermeable back sheet 22 that forms the outer surface of the diaper 1 </ b> A, and these sheets 21 and 22. And a liquid retaining absorbent 23 interposed therebetween. As shown in FIG. 1, each of the top sheet 21 and the back sheet 22 covers the entire skin contact surface side and the non-skin contact surface side of the absorber 23, and extends from the periphery of the absorber 23. ing. Further, as shown in FIG. 2, the length of the top sheet 21 in the X direction is shorter than the length of the back sheet 22 in the X direction.

  In the absorbent main body 2 of the diaper 1 </ b> A, as shown in FIG. 1, side sheets 24 are arranged on both side portions 2 s and 2 s in the Y direction via a surface sheet 21. As shown in FIG. 1, the side sheet 24 is disposed and fixed over the entire side portion in the Y direction on the skin contact surface side of the top sheet 21. As shown in FIG. 1, the end portion of each side seat 24 in the X direction (near the center line CL) is a free end, and an elastic portion for forming a three-dimensional gather is formed near the free end of the crotch portion C. The member 30 is disposed and fixed in an elongated state in the longitudinal direction (Y direction), and when worn, a portion having a predetermined width from the free end is separated from the top sheet 21 by the contraction force of the elastic member, and the three-dimensional gather 3 is Form.

  As shown in FIG. 1, the side sheet 24 and the back sheet that extend outward in the X direction are provided on both sides 2 s and 2 s of the absorbent main body 2 of the diaper 1 </ b> A, respectively. 22 and the side flap part 25 are formed. Further, as shown in FIG. 1, a side sheet 24 and a back sheet 22 that extend outward in the width direction (X direction) are joined to both side portions 2 s and 2 s of the absorbent main body 2 in the crotch portion C. A leg flap portion 26 is formed. An elastic member 40 for forming leg gathers is disposed and fixed in the longitudinal direction (Y direction) in the crotch C at the leg flap portion 26. A gather 4 is formed.

  The topsheet 21 holds a hydrophilizing agent 6 for hydrophilizing the topsheet 21 on a part or the whole of the topsheet 21. In the diaper 1A, as shown in FIGS. The hydrophilizing agent 6 for hydrophilizing the topsheet 21 is held in a part of 21. Here, being hydrophilized means that the contact angle by the contact angle method is 80 degrees or less. For the measurement of the contact angle, a contact angle meter MCA-J manufactured by Kyowa Interface Science Co., Ltd. is used. Specifically, after the ion-exchanged water is dropped (about 20 picoliters) on the surface sheet 21 after the application of the hydrophilizing agent 6, the contact angle is measured immediately using the contact angle meter. The measurement is performed at five or more locations on the surface sheet 21 after the hydrophilizing agent 6 is applied.

  In the diaper 1 </ b> A, as shown in FIGS. 1 and 2, the hydrophilizing agent 6 is held at the center in the width direction (X direction) of the topsheet 21. As shown in FIG. 1, the hydrophilizing agent application region 60 of the diaper 1 </ b> A for applying the hydrophilizing agent 6 to the surface sheet 21 is a pair of three-dimensional gathers 3, 3 that are expanded and expanded in the X direction. In the Y direction, it is formed across both ends of the absorbent main body 2 in the Y direction. The ratio of the hydrophilizing agent application region 60 to the total surface area of the surface sheet 21 (surface sheet area between the base fixing positions of the left and right three-dimensional gathers 3) is determined by the agent transferability and skin care effect on the wearer's skin, the surface From the viewpoint of the permeability of the body fluid to the sheet 21, the difficulty of seeping of the body fluid from the three-dimensional gather 3, and the leakproof property, it is preferably 15 to 75%, more preferably 20 to 55%.

The hydrophilizing agent 6 for hydrophilizing the topsheet 21 is a skin care agent containing a diamide derivative represented by the following formula (I).

  The diamide derivative represented by the above formula (I) is a diamide derivative of the invention described in International Publication No. WO00 / 61097, and has a medicinal effect of improving the moisture retention ability and barrier function of the stratum corneum. ing.

  Only one type of diamide derivative may be used, or two or more types of diamide derivatives may be used. If necessary, it can be used in combination with other skin care agents. As the other skin care agent, any skin care agent that does not interfere with the role as the hydrophilizing agent of the diamide derivative of the above formula (I) for hydrophilizing the surface sheet 21 can be used without particular limitation, for example, in the field of cosmetics. And the like used as emollients can be used.

Specific examples of the other skin care agents include liquid paraffin, silicone oil, animal and vegetable oils (olive oil, jojoba oil, safflower oil, squalane and squalene, etc.), monoglyceride, diglyceride, triglyceride, aliphatic ether (myristyl-1,3- Dimethylbutyl ether, palmityl-1,3-dimethylbutyl ether, stearyl-1,3-dimethylbutyl ether, palmityl-1,3-methylpropyl ether, stearyl-1,3-methylpropyl ether, etc.), isostearyl-cholesterol ester, paraffin waxes, C ₁₂ -C ₂₂ fatty acids, C ₁₂ -C ₄₄ fatty ethers, C ₁₂ -C ₂₂ fatty alcohols, vaseline, fatty acid sorbitan esters (monoesters, diesters, and any of triesters .), Polyoxyethylene fatty acid sorbitan ester (any of monoester, diester, and triester), metal exploration (magnesium stearate, etc.), sucrose fatty acid ester, cyclodextrin fatty acid ester, silicone, silicone resin etc., and include emollients such as for use in the invention described in Japanese Patent 3,217,792 discloses and patent 3,217,793 is, from the viewpoint of not lowering the permeability of body fluid on the topsheet, C ₁₂ -C ₂₂ A mixture of stearyl alcohol in the fatty alcohol and the diamide derivative of the above formula (I) can be preferably used. The mixing ratio of stearyl alcohol and the diamide derivative of the above formula (I) (stearyl alcohol / diamide derivative) is from the viewpoint of transferability to the skin and skin care effect, feel during use, and permeability of body fluid to the surface sheet 21. It is preferable that it is 90 / 10-50 / 50 (weight%).

  The holding of the hydrophilic agent 6 on the surface sheet 21 is performed by adding the solid or semi-solid hydrophilic agent 6 to the tank of the coating device (applicator) at room temperature and heating it to increase its fluidity. 21 by coating. After the surface sheet 21 is coated with the hydrophilizing agent 6, the hydrophilizing agent 6 becomes solid or semi-solid by being left at room temperature, and the hydrophilizing agent 6 is adhered and held on the top sheet 2.

  Examples of the coating method include a die coater method, a slot spray method, a curtain spray method, a melt blown method, a spiral spray method, a gravure method, and a bead method.

The coating amount of the hydrophilizing agent 6 (meaning the coating amount in the region where the hydrophilizing agent 6 is actually applied (hydrophilizing agent coating region 60)) is the transferability to skin and skin care. effect, feel of use, from the viewpoint of permeability of the body fluid to the surface sheet 21, is preferably in the range of 0.1 to 2.0 g / m ^2, of 0.2 to 1.0 g / m ² range More preferably.

  The pair of three-dimensional gathers 3 and 3 and / or the pair of leg gathers 4 and 4 repels the gathers in part or all of the pair of three-dimensional gathers 3 and 3 and / or the pair of leg gathers 4 and 4. A skin care agent that is also a water repellent agent 7 is held, and in the diaper 1A, as shown in FIGS. 1 and 2, a water repellent that repels the gathers in a part of a pair of three-dimensional gathers 3 and 3 The skin care agent that is also the agent 7 is retained. Here, being water-repellent means that the contact angle by the contact angle method is 90 degrees or more. For the measurement of the contact angle, a contact angle meter MCA-J manufactured by Kyowa Interface Science Co., Ltd. is used in the same manner as the measurement of the contact angle for hydrophilization described above. Specifically, ion-exchanged water is dropped (about 20 picoliters) on the gather after application of the water repellent agent 7, and then the contact angle is measured immediately using the contact angle meter. The measurement is performed at five or more locations in the gather after application of the water repellent agent 7.

In the diaper 1A, a part of the pair of three-dimensional gathers 3 and 3, that is, as shown in FIG. Is held. The pair of three-dimensional gathers 3 and 3 of the diaper 1A are so-called inwardly-folded three-dimensional gathers whose tips rise toward the center line CL when worn. As shown in FIG. The water repellent agent 7 is held on a part of the skin contact surface). The water repellent application area 70 of the diaper 1 </ b> A for applying the water repellent 7 to each of the pair of three-dimensional gathers 3, 3 is a three-dimensional gather in each of the pair of three-dimensional gathers 3, 3 in an expanded state. 3 is formed on a part of the outer surface (skin contact surface) of the side sheet 24 that forms 3. As shown in FIG. 1, the water repellent application region 70 of the diaper 1 </ b> A has a position of the side sheet 24 corresponding to the position of the edge in the X direction of the topsheet 21 and a three-dimensional gather formation. Among the plurality of elastic members 30, the outermost elastic member 30 in the X direction (the elastic member 30 furthest away from the center line CL) is narrower than the position of the side seat 24 corresponding to the position of the elastic member 30. In the Y direction, the absorbent main body 2 is formed across both ends in the Y direction. In the crotch part C, the water repellent application region 70 of the diaper 1 </ b> A is directed from the position of the side sheet 24 corresponding to the position of the edge in the X direction of the topsheet 21 toward the tip of the three-dimensional gather 3 in the X direction. It is formed in the rising portion 3R. When the boundary between the three-dimensional gather 3 and the leg gather 4 is the position of the side sheet 24 corresponding to the position of the edge in the X direction of the top sheet 21, the total surface area of the three-dimensional gather 3 (from the base fixed position of the three-dimensional gather 3) The ratio of the water-repellent agent coating area 70 to the three-dimensional gather 3's three-dimensional area) is such that the body fluid from the three-dimensional gather 3 is difficult to bleed out and leaks, the skin care effect on the skin, and the feel during use. From the viewpoint, it is preferably 10 to 100%, and more preferably 30 to 60%.
From the viewpoint of preventing leakage of body fluid from the three-dimensional gather 3 and improving the leak-proof property, the position of the coating region 70 is preferably arranged closer to the root fixing position of the three-dimensional gather 3 than to the tip of the three-dimensional gather 3. Further, in the case where the application region 70 is applied in a stripe shape, the total of the plural pieces is taken as the ratio of the application region 70.

Further, in the diaper 1A, as shown in FIG. 2, the skin care which is also the water repellent 7 in each of the rising facing portions 21R and 21R of the top sheet 21 facing the rising portions 3R of the pair of three-dimensional gathers 3 and 3, respectively. The agent is retained. The water repellent application region 70 ′ of the diaper 1 </ b> A for applying the water repellent 7 to the top sheet 21 is formed to face the water repellent application region 70 of the above-described three-dimensional gather. Water repellent application region 70 ′ (water repellent application region 70 on both side portions 2s, 2s) with respect to the entire surface area of the surface sheet 21 (the area of the surface sheet 21 between the root fixing positions of the left and right three-dimensional gathers 3) The ratio of “total” is that the body fluid hardly moves in the X direction in the vicinity of the rise of the three-dimensional gather 3 on the top sheet 21, the body fluid does not easily exude from the three-dimensional gather 3 (water repellency), and the leak-proof property is enhanced. The content is preferably 5 to 50%, more preferably 10 to 30%.
Moreover, without reducing the skin care effect of the hydrophilic agent of the topsheet 21 and the permeability of the body fluid to the topsheet 21, it is difficult for the body fluid to move in the X direction, and the body fluid does not easily ooze out from the three-dimensional gather 3, thereby improving leakage prevention. From the viewpoint, the water repellent application region 70 ′ of the rising facing portions 21 R and 21 R of the facing surface sheet 21 is opposed to the water repellent application region 70 of the rising portion 3 R of each of the pair of three-dimensional gathers 3 and 3. It is preferable that the width is narrower.

The skin care agent that gathers any water-repellent agent 7 which water-repellent, C ₁₂ -C ₂₂ fatty alcohols, vaseline, liquid paraffin, silicone oil, animal and vegetable oils (olive oil, Hooba oil, safflower oil, squalane and squalene, etc.) , Diglyceride, triglyceride, paraffin wax, C ₁₂ -C ₂₂ fatty acid, silicone, silicone resin, and the like. From the viewpoint of skin care effect on the skin, water repellency, and feel during use, C ₁₂ -C ₂₂ fatty alcohol Among them, a mixture of stearyl alcohol and petrolatum can be preferably used. The mixing ratio of stearyl alcohol and petrolatum (stearyl alcohol / petroleum) is 80/20 to from the viewpoint of difficulty in exudation of body fluid from the three-dimensional gather 3 and leakage prevention, skin care effect on the skin, and feel during use. It is preferable that it is 50/50 (weight%).

  Gather water repellent agent 7 is retained at normal temperature by putting solid or semi-solid water repellent agent 7 into the tank of the coating device (applicator) and heating to increase its fluidity. By coating. After coating the water repellent agent 7 on the gather, the water repellent agent 7 becomes solid or semi-solid by leaving it at room temperature, and the water repellent agent 7 adheres to the gather and is held. As the coating method, a method similar to the method of the hydrophilizing agent 6 described above can be used.

The coating amount of the gathered water repellent 7 (meaning the coating amount in the region where the water repellent 7 is actually applied (water repellent coating region 70)) is a three-dimensional gather. From the viewpoints of difficulty in exudation of body fluid from 3 and leakage prevention, skin care effect on the skin, and feel during use, the range of 0.1 to 20.0 g / m ² is preferable. More preferably, the range is 10.0 g / m ² .

  As described above, the water-repellent agent 7 on the top sheet 21 is retained by the water-repellent agent 7 coated on the gathers after the fluidity is increased by heating and passes through the side sheets 24 forming the three-dimensional gathers 3. As a result, the water repellent agent 7 adheres to the top sheet 21 and is held. Accordingly, in the diaper 1 </ b> A, as shown in FIG. 2, the water repellent agent 7 is held in each of the rising facing portions 21 </ b> R and 21 </ b> R of the surface sheet 21 that faces the rising portions 3 </ b> R of the pair of three-dimensional gathers 3 and 3. It becomes like this. From the viewpoint of allowing the water repellent 7 to permeate the side sheet 24, the rising portion 3R of the three-dimensional gather is preferably formed from one side sheet 24 as shown in FIG. In this case, each of the rising facing portions 21R and 21R of the topsheet 21 facing the rising portion 3R of the three-dimensional gather formed from one side sheet 24 holds more water repellent 7.

The coating amount of the water repellent agent 7 on the surface sheet 21 (meaning the coating amount in the region where the water repellent agent 7 is applied (water repellent agent coating region 70 ')) is the surface. without reducing the permeability of the body fluid of the sheet 21, it is difficult to transition body fluids in the X-direction, in view of enhancing the leakage preventing body fluids hardly oozes from the stereoscopic gather 3, of 0.1 to 2.0 g / m ² It is preferable to set it as a range, and it is still more preferable to set it as the range of 0.2-1.0 g / m < ² >.
From the viewpoint of allowing the water repellent 7 of the three-dimensional gather 3 to easily pass through the side sheet 24, the coating amount of the water repellent 7 of the gather 3 (the region where the water repellent 7 is applied (the water repellent) The coating region 70)) is preferably larger than the coating amount of the water repellent 7 on the top sheet 21.
From the viewpoint of not reducing the body fluid permeability of the topsheet 21, the coating amount of the water repellent 7 on the topsheet 21 (the region where the water repellent 7 is applied (the water repellent coating region 70 '). )) Is preferably smaller than the coating amount of the water repellent 7 of the three-dimensional gather 3.

The material for forming the diaper 1A of the present embodiment will be described.
As the surface sheet 21, the back sheet 22, and the absorbent body 23 constituting the absorbent main body 2, any one can be used without particular limitation as long as it is usually used for absorbent articles such as disposable diapers. For example, a hydrophilic and liquid-permeable non-woven fabric can be used as the top sheet 21, and a liquid-impermeable or water-repellent resin film or a laminate of a resin film and a non-woven fabric is used as the back sheet 22. As the absorbent body 23, an aggregate of fibers such as pulp fibers (which may be a nonwoven fabric) or an absorbent core formed by holding particles of a water-absorbing polymer in the fiber core is used. The thing coated with the core wrap sheet which consists of can be used. As the side sheets 24 forming the three-dimensional gather 3 and the leg gather 4, each can be used without particular limitation as long as it is usually used for absorbent articles such as disposable diapers. A woven fabric or a laminated sheet thereof can be used. As the elastic member 30 for forming a three-dimensional gather and the elastic member 40 for forming a leg gather, natural rubber, polyurethane, polystyrene-polyisoprene copolymer, polystyrene-polybutadiene copolymer, polyethylene-α such as ethyl acrylate-ethylene, etc. A thread-like stretchable material made of an olefin copolymer or the like can be used.

  The engagement protrusion and the target sheet (not shown) of the fastening tape 5 can be used without particular limitation as long as they are normally used for absorbent articles such as disposable diapers. For example, as the engagement protrusion, “Magic Tape (registered trademark)” (manufactured by Kuraray Co., Ltd.), “Quicklon (registered trademark)” (manufactured by YKK), “Majikurosu (registered trademark)” (manufactured by Kanebo Bell Touch) The male member etc. in etc. can be used. As the target sheet (not shown), a target sheet that can fasten the engaging protrusion by pressing the engaging protrusion can be used without particular limitation. For example, the female member in the various well-known mechanical hook-and-loop fastener mentioned above and the nonwoven fabric rich in engagement can be used.

  For fixing the top sheet 21, the back sheet 22, the side sheet 24, the fastening tape 6 and the target sheet (not shown), adhesives, heat embossing, ultrasonic embossing, high frequency, which are usually used for absorbent articles such as disposable diapers, etc. A fusing means such as embossing is used.

Next, the effect at the time of using the disposable diaper 1A of 1st Embodiment of this invention mentioned above is demonstrated.
As shown in FIG. 1 and FIG. 2, the diaper 1 </ b> A holds a hydrophilizing agent 6 containing a diamide derivative represented by the above formula (I) on a part of the topsheet 21, A skin care agent that is also a water repellent agent 7 is retained in part. Thus, in the diaper 1A, a skin care agent containing the diamide derivative of the hydrophilizing agent 6 that has a high skin care effect and is difficult to reduce the absorption performance of body fluid on the surface sheet 2 having the largest area in contact with the wearer's skin. Since the skin care agent which is also the water repellent agent 7 is held in the pair of three-dimensional gathers 3 and 3, the skin care effect on the skin is high, and the three-dimensional gathers 3 and 3 hold the skin care agent. Further, the body water is not easily oozed out by the water repellent 7 and is excellent in leakage prevention. As described above, the diaper 1A has a high skin care effect on the skin and is excellent in leakage prevention.

  Moreover, since the skin care agent which is also the water repellent agent 7 is hold | maintained in each rising part 3R of a pair of solid gathers 3 and 3, as shown in FIG. 1, FIG. It is difficult to ooze out and has excellent leak-proof properties. Further, as shown in FIG. 2, the three-dimensional gather 3 of the diaper 1A is an internally folded three-dimensional gather, and a skin care agent that is also a water repellent 7 is held on a part of the outer surface of the internally folded three-dimensional gather 3. Therefore, the skin care effect on the skin is even higher. Further, as shown in FIGS. 1 and 2, the diaper 1 </ b> A holds the water repellent agent 7 in each of the rising facing portions 21 </ b> R and 21 </ b> R of the topsheet 21, so that the body fluid in the X direction in the topsheet 21 Is difficult to migrate, and it is difficult for the body fluid to ooze out from the three-dimensional gather 3 and is excellent in leakage prevention.

Next, the disposable diaper of 2nd Embodiment of this invention is demonstrated based on FIG. 3, FIG.
About the disposable diaper 1B of 2nd Embodiment (henceforth "diaper 1B"), a different point from 1A of disposable diapers of 1st Embodiment is demonstrated. The point which is not demonstrated especially is the same as that of the diaper 1A, and description of the diaper 1A is applied suitably.

  As shown in FIGS. 3 and 4, the diaper 1 </ b> B of the second embodiment is an unfolded disposable diaper, like the diaper 1 </ b> A. In the diaper 1 </ b> B, as shown in FIGS. 3 and 4, a hydrophilizing agent 6 that hydrophilizes the topsheet 21 is held at the center in the width direction (X direction) of the topsheet 21 that is a part of the topsheet 21. Has been. As shown in FIG. 3, the hydrophilizing agent application region 60 of the diaper 1 </ b> B for applying the hydrophilizing agent 6 to the topsheet 21 is a pair of three-dimensional gathers 3, 3 that are expanded and expanded in the X direction. In the Y direction, it is formed between both ends of the absorbent main body 2 in the Y direction.

  In the diaper 1B, as shown in FIG. 3 and FIG. 4, a skin care agent that is also a water repellent 7 that repels the gathers is formed on the whole of the pair of three-dimensional gathers 3, 3 and the pair of leg gathers 4, 4. Is retained. The pair of three-dimensional gathers 3 and 3 of the diaper 1B are so-called inwardly-folded three-dimensional gathers whose tips rise toward the center line CL when worn. As shown in FIGS. The water repellent agent 7 is held on the entire outer surface (skin contact surface) of the leg gathers 4, and the water repellent agent 7 is held on the entire outer surfaces (skin contact surfaces) of the leg gathers 4 and 4. The water repellent application area 70 of the diaper 1 </ b> B for applying the water repellent 7 to the three-dimensional gather and the leg gather 4 includes a pair of three-dimensional gathers 3 and 3 and a pair of leg gathers 4 in an expanded state. 4 is formed on the entire outer surface (skin contact surface) of the side sheet 24 that forms the three-dimensional gather 3 and the leg gather 4. As shown in FIG. 3, the water repellent application region 70 of the diaper 1 </ b> B is located between both ends in the X direction of each side sheet 24, that is, an end on the inner side in the X direction of each side sheet 24 (center line CL side). ) And an end on the outer side in the X direction, and is formed between both ends of the side sheet 24 in the Y direction.

  In the diaper 1 </ b> B, as shown in FIG. 4, the water repellent 7 is not held on the top sheet 21. The side sheet 24 forming the three-dimensional gather 3 includes a melt blown so that the water repellent 7 whose fluidity is increased by heating is difficult to permeate so that the top sheet 21 does not hold the water repellent 7. The side sheet 24 is preferably used.

  The formation material of the disposable diaper 1B of 2nd Embodiment is demonstrated. About the disposable diaper 1B of 2nd Embodiment, it is the same as that of the formation material of 1 A of disposable diapers of 1st Embodiment.

The effect at the time of using the disposable diaper 1B of 2nd Embodiment of this invention mentioned above is demonstrated.
About the effect of the disposable diaper 1B of 2nd Embodiment, a different point from the effect of the disposable diaper 1A of 1st Embodiment is demonstrated. The point which is not demonstrated especially is the same as the effect of 1 A of disposable diapers of 1st Embodiment, and description of the effect of 1 A of disposable diapers of 1st Embodiment is applied suitably.

  As shown in FIGS. 3 and 4, the diaper 1 </ b> B has a hydrophilizing agent 6 that hydrophilizes the topsheet 21 at the center in the width direction (X direction) of the topsheet 21. , 3 and the pair of leg gathers 4, 4 hold a skin care agent that is also a water repellent 7 for making the gathers water repellent. As described above, in the diaper 1B, the skin sheet containing the diamide derivative of the hydrophilizing agent 6 is applied to the surface sheet 2 that is in contact with the skin of the wearer, which hardly absorbs body fluids and has a high skin care effect. Since the skin care agent, which is also the water repellent 7 that is difficult to exude body fluid, is held on the whole of the pair of three-dimensional gathers 3 and 3 and the pair of leg gathers 4 and 4 in contact with the wearer's skin, It excels in skin care and does not exude body fluids.

Next, the disposable diaper of 3rd Embodiment of this invention is demonstrated based on FIG. 5, FIG.
About the disposable diaper 1C of 3rd Embodiment (henceforth "diaper 1C"), a different point from 1A of disposable diapers of 1st Embodiment is demonstrated. The point which is not demonstrated especially is the same as that of the diaper 1A, and description of the diaper 1A is applied suitably.

  The diaper 1C of 3rd Embodiment is an unfolded | expanded disposable diaper like the diaper 1A, as shown in FIG.5, FIG.6. In the diaper 1 </ b> C, as shown in FIGS. 5 and 6, a hydrophilizing agent 6 that hydrophilizes the topsheet 21 is held at the center in the width direction (X direction) of the topsheet 21 that is a part of the topsheet 21. Has been. As shown in FIG. 5, the hydrophilizing agent application region 60 of the diaper 1 </ b> C in which the hydrophilizing agent 6 is applied to the top sheet 21 is a pair of three-dimensional gathers 3, 3 that are expanded and expanded in the X direction. In the Y direction, it is formed between both ends of the absorbent main body 2 in the Y direction.

  In the diaper 1C, as shown in FIGS. 5 and 6, a skin care agent that is also a water repellent 7 that repels the gathers is formed on the whole of the pair of three-dimensional gathers 3, 3 and the pair of leg gathers 4, 4. Is retained. The pair of three-dimensional gathers 3 and 3 of the diaper 1C are so-called inwardly-folded three-dimensional gathers whose tips rise toward the center line CL when worn, and as shown in FIGS. The water repellent agent 7 is held on the entire outer surface (skin contact surface) of the leg gathers 4, and the water repellent agent 7 is held on the entire outer surfaces (skin contact surfaces) of the leg gathers 4 and 4. The water repellent application region 70 of the diaper 1 </ b> C for applying the water repellent 7 to the three-dimensional gather and the leg gather 4 includes a pair of three-dimensional gathers 3 and 3 and a pair of leg gathers 4 in an expanded state. 4 is formed on the entire outer surface (skin contact surface) of the side sheet 24 forming the three-dimensional gather 3 and the leg gather 4, and the end of the side sheet 24 on the inner side in the X direction (center line CL side) Beyond that, a part of the topsheet 21 is also formed at such a position. Thus, as shown in FIG. 5, the water repellent application region 70 of the diaper 1 </ b> C is located between both ends in the X direction of each side sheet 24, i.e., inward in the X direction of each side sheet 24 (center line). (CL side) and an end on the X direction outer side, and the end of the topsheet 21 beyond the inner side (center line CL side) end of the side sheet 24 in the X direction. It is formed to extend to a position over the part.

In the diaper 1 </ b> C, as shown in FIG. 6, the skin care agent that is also the water repellent 7 is held in each of the facing portions 21 </ b> O and 21 </ b> O of the top sheet 21 that faces the pair of three-dimensional gathers 3 and 3. Yes. The water repellent application region 70 ′ of the diaper 1 </ b> C for applying the water repellent 7 to the top sheet 21 is formed to face the water repellent application region 70 of the three-dimensional gather 3 described above. As shown in FIGS. 5 and 6, the water repellent application region 70 ′ of the diaper 1 </ b> C is the same as the water repellent application region 70 ′ of the three-dimensional gather 3 and the leg gather 4. The water-repellent agent 7 that is formed on the entire contact surface and increases the fluidity by heating and then passes through the side sheet 24 through the gathered water-repellent agent 7 adheres to the surface sheet 21. Held and formed.
The water repellent agent 7 of the opposing portions 21O, 21O is a three-dimensional formed from one side sheet 24 from the opposing portion 21O facing the tip of the three-dimensional gather 3 formed by folding back the side sheets 24. The facing portion 21O facing the gathering rising portion 3R is more retained.

  As shown in FIGS. 5 and 6, the diaper 1 </ b> C has a pair of weakly water-repellent regions 21 </ b> C and 21 </ b> C in a part of the topsheet 21. Each weakly water-repellent region 21 </ b> C is formed in a part of the topsheet 21 that is located inward from the X-direction inner end (end on the center line CL side) of each side sheet 24. As described above, in the diaper 1 </ b> C, the water repellent application region 70 is formed between the end in the X direction inner side (end on the center line CL side) and the end in the X direction outer side of each side sheet 24. It is formed so as to extend between the end of each side sheet 24 on the inner side in the X direction (end on the center line CL side) and to a position over a part of the top sheet 21. The water repellent agent 7 is adhered and held at a part of the surface sheet 21. Further, as described above, in the diaper 1C, as shown in FIGS. 5 and 6, the pair of three-dimensional solids in a state where the hydrophilizing agent coating region 60 of the topsheet 21 is expanded and expanded in the X direction. It is formed between the tips of the gathers 3 and 3. Therefore, in the X direction, the portion of the hydrophilic agent coating region 60 and the water repellent agent coating region 70 are overlapped at a part of the surface sheet 21, and the hydrophilic agent 6 and The water-repellent agent 7 is mixed, and a pair of weakly water-repellent regions 21C and 21C are formed in a part of the top sheet 21 of the diaper 1C.

Here, the weak water repellency means that the contact angle by the contact angle method is in the middle range between the contact angle of the hydrophilizing agent coating 6 of the topsheet 21 and the contact angle of the three-dimensional gathered water repellent 7. . The contact angle is measured using a contact angle meter MCA-J manufactured by Kyowa Interface Science Co., Ltd. in the same manner as the above-described measurement of the hydrophilic contact angle.
The ratio of the weakly water-repellent region 21C (the total of the regions 21C of the two side portions 2s and 2s) to the total surface area of the surface sheet 21 decreases the skin care effect of the hydrophilic agent of the surface sheet 21 and the permeability of body fluid to the surface sheet 21. From the standpoint of improving body leakage and preventing leakage of body fluid in the X direction of the topsheet 21, the content is preferably 3 to 30%, and more preferably 7 to 20%.

  A material for forming the disposable diaper 1 </ b> C of the third embodiment will be described. About the disposable diaper 1C of 3rd Embodiment, it is the same as that of the formation material of 1 A of disposable diapers of 1st Embodiment.

The effect at the time of using the disposable diaper 1C of 3rd Embodiment of this invention mentioned above is demonstrated.
About the effect of 1 C of disposable diapers of 3rd Embodiment, a different point from the effect of 1 A of disposable diapers of 1st Embodiment is demonstrated. The point which is not demonstrated especially is the same as the effect of 1 A of disposable diapers of 1st Embodiment, and description of the effect of 1 A of disposable diapers of 1st Embodiment is applied suitably.

  As shown in FIGS. 5 and 6, the diaper 1 </ b> C has a weak water repellency in each of the pair of intermediate portions 21 </ b> C of the topsheet 21, so that body fluid does not easily move in the width direction (X direction) of the topsheet 2. Excellent leakage resistance.

Next, the disposable diaper of 4th Embodiment of this invention is demonstrated based on FIG.
About the disposable diaper 1D of 4th Embodiment (henceforth "diaper 1D"), a different point from 1A of disposable diapers of 1st Embodiment is demonstrated. The point which is not demonstrated especially is the same as that of the diaper 1A, and description of the diaper 1A is applied suitably.

  As shown in FIG. 7, the diaper 1 </ b> D of the fourth embodiment includes a top sheet 21, a back sheet 22, and an absorber 23, and a pair of three-dimensional bodies on both sides 1 s and 1 s in the longitudinal direction (Y direction). The gathers 3 and 3 and the pair of leg gathers 4 and 4 are so-called pants-type disposable diapers formed by arranging elastic members 30 and 40, respectively. As shown in FIG. 7, the diaper 1 </ b> D includes a top sheet 21, a back sheet 22, a vertically long absorbent body 2 having an absorbent body 23 interposed between both sheets 21 and 22, and the back sheet 22 side of the absorbent body 2. The outer layer body 8 is arranged and fixed to the outer layer body 8, and both side edge portions 8 a, 8 a of the ventral side A of the outer layer body 8 and both side edge portions 8 b, 8 b of the back side portion B are fused to each other. A pants-type disposable diaper.

  As shown in FIG. 7, the outer layer body 8 is formed of an outer layer sheet 81 that is the outermost surface of the pants-type disposable diaper and an inner layer sheet 82 that is disposed on the inner surface side of the outer layer sheet 81. Between the outer layer sheet 81 and the inner layer sheet 82 constituting the outer layer body 8, a plurality of elastic members are provided between both side edges 8a and 8a of the ventral side A and between both side edges 8b and 8b of the back side B. Members are arranged. More specifically, a waist elastic member (not shown), a waist elastic member (not shown), and a leg elastic member 40 are disposed between the outer layer sheet 81 and the inner layer sheet 82 that constitute the outer layer body 8. A waist elastic area (waist gather), a waistline elastic area (waistline gather), and a pair of annular leg gathers 4 and 4 are formed across both side edges 8a, 8a, 8b, 8b of the part A and the back side part B. Has been.

  As shown in FIG. 7, the leg gather 4 of the diaper 1D has a plurality of leg elastic members 40 on the ventral side A from the side edge 8a on one side (left side in FIG. 7) of the ventral side A. It adheres along one side (left side in FIG. 7) of the side portion A, passes through the crotch C, and passes through the crotch C to the other side (right side in FIG. 7). It is formed by being fixed in a stretched state until reaching the side edge portion 8a on the right side in FIG. 7 and cutting at the center portion (a portion including the center line CL) of the crotch portion C. Similarly, the leg gather 4 of the diaper 1D has a plurality of leg elastic members 40 on the back side B, as shown in FIG. 7, on one side edge (left side in FIG. 7) of the back side B. 8b is fixed along one side (left side in FIG. 7) of the back side portion B, passes through the crotch C, and passes along the other side (right side in FIG. 7) of the back side portion B. The other side (right side in FIG. 7) of the other side (right side in FIG. 7) is fixed in an elongated state and is cut at the center of the crotch C.

  A skin care agent that is also a water repellent agent 7 is held on a part or the whole of the inner surface of the outer layer body 8, and in the diaper 1D, the inner surface (skin contact surface) of the inner layer sheet 82 that constitutes the outer layer body 8. The water repellent 7 is retained. Specifically, as shown in FIG. 7 (a), the water repellent 7 may be held on the entire inner surface (skin contact surface) of the inner layer sheet 82 constituting the outer layer body 8. As shown in (b), the outer side of the absorptive main body 2 is in the width direction (X direction) and repels the inner surfaces (skin contact surfaces) of the stomach side portion A and the back side portion B of the inner layer sheet 82. The hydrating agent 7 may be held, and as shown in FIG. 7 (c), the abdomen A and the dorsal side B are respectively outside the absorbent body 2 in the longitudinal direction (Y direction). The water repellent 7 may be held on the inner surface (skin contact surface) of a so-called waist elastic region (waist gather) of the inner layer sheet 82.

  The holding of the water repellent agent 7 of the outer layer body 8 is carried out after placing the solid or semi-solid water repellent agent 7 into the tank of the coating apparatus (applicator) at room temperature and heating to increase its fluidity. It is performed by coating the interior sheet 82 of the outer layer body 8. After coating the water repellent 7 on the interior sheet 82, the water repellent 7 becomes solid or semi-solid by being left at room temperature, and the water repellent 7 is adhered and held on the outer layer body 8. . As the coating method, a method similar to the method of the hydrophilizing agent 6 described above can be used.

  In the diaper 1D, as in the diaper 1A, as shown in FIG. 7, the hydrophilizing agent 6 is held in the center portion in the width direction (X direction) of the topsheet 21, and a pair of three-dimensional gathers 3, 3 The water-repellent agent 7 is held in a part of each of the three-dimensional gathers 3 and 3 rising from the top sheet 21 at the time of wearing. In the diaper 1D, as in the diaper 1A, as shown in FIG. 7, the water repellent agent 7 is also held in each of the rising facing portions 21R of the topsheet 21 facing the rising portions 3R of the three-dimensional gather 3. Yes.

  The formation material of the disposable diaper 1D of 4th Embodiment is demonstrated. About disposable diaper 1D of 4th Embodiment, a different point from the formation material of disposable diaper 1A of 1st Embodiment is demonstrated.

  The outer layer sheet 81 and the inner layer sheet 82 constituting the outer layer body 8 can be used without particular limitation as long as they are usually used for absorbent articles such as disposable diapers. For example, as the outer layer sheet 81 and the inner layer sheet 82, a nonwoven fabric can be used.

The effect at the time of using the disposable diaper 1D of 4th Embodiment of this invention mentioned above is demonstrated.
About the effect of disposable diaper 1D of 4th Embodiment, a different point from the effect of disposable diaper 1A of 1st Embodiment is demonstrated. The point which is not demonstrated especially is the same as the effect of 1 A of disposable diapers of 1st Embodiment, and description of the effect of 1 A of disposable diapers of 1st Embodiment is applied suitably.

  As shown in FIG. 7, the diaper 1D is a pants-type disposable diaper. Since the skin care agent that is also the water repellent agent 7 is held on a part or the whole of the inner surface of the outer layer body 8, It has a skin care effect on the skin that reduces redness caused by rubber marks, and has a leak-proof effect that prevents exudation of body fluid to the outside.

Next, the disposable diaper of 5th Embodiment of this invention is demonstrated based on FIG.
About the disposable diaper 1E of 5th Embodiment (henceforth "diaper 1E"), a different point from 1A of disposable diapers of 1st Embodiment is demonstrated. The point which is not demonstrated especially is the same as that of the diaper 1A, and description of the diaper 1A is applied suitably.

  As shown in FIG. 8, the diaper 1E of the fifth embodiment includes a top sheet 21, a back sheet 22, and an absorber 23, and a pair of three-dimensional bodies on both sides 1s and 1s in the longitudinal direction (Y direction). The gathers 3 and 3 are so-called pants-type disposable diapers formed by arranging the elastic members 30. As shown in FIG. 8, the diaper 1 </ b> E is arranged on the front side sheet 21, the back sheet 22, the vertically long absorbent main body 2 having the absorbent body 23 interposed between both sheets 21 and 22, and the wearer's stomach side. A horizontally-long rectangular abdominal sheet member 9A and a horizontally-long rectangular back-side sheet member 9B arranged on the back side of the wearer, and the absorbent main body 2 includes the abdominal-side sheet member 9A and the back-side sheet member. This is a pants-type disposable diaper that is fixed over 9B and is formed by joining both side edges 9a, 9a of the abdominal sheet member 9A and both side edges 9b, 9b of the back sheet 9B. In the diaper 1E, the abdominal sheet member 9A and the back sheet member 9B are present outside the absorbent main body 2 and are outer layer bodies.

  As shown in FIG. 8, each of the abdominal sheet member 9 </ b> A and the back sheet 9 </ b> B is arranged to be separated in the vertical direction (Y direction) and extended in the width direction (X direction). It has an elastic member (not shown). As shown in FIG. 8, the ventral sheet member 9 </ b> A and the back sheet member 9 </ b> B in the diaper 1 </ b> E both have an outer layer sheet 91 that forms the outer surface of the diaper, an inner layer sheet 92 disposed on the inner surface side of the outer layer sheet 91, A plurality of elastic members (not shown) that are extended in the width direction (X direction) are provided between the sheets 91 and 92. More specifically, a waist elastic member (not shown) and a waist elastic member (not shown) are arranged between the outer layer sheet 91 and the inner layer sheet 92 constituting the abdominal sheet member 9A and the back sheet 9B, respectively. Each of the abdominal side A and the back side B is formed with a waist elastic region (waist gather) and a waistline elastic region (waistline gather). The diaper 1E does not have leg gathers as shown in FIG.

  A skin care agent that is also a water repellent agent 7 is held on a part or all of the inner surfaces of the ventral sheet member 9A and the back sheet 9B that are outer layers, and in the diaper 1E, the ventral sheet member 9A. And the water repellent agent 7 is hold | maintained at the inner surface (skin contact surface) of the inner layer sheet | seat 92 which comprises each back sheet | seat 9B. Specifically, as shown in FIG. 8A, the inner surface (skin contact surface) of the inner layer sheet 92 of the abdominal sheet member 9A is outward in the width direction (X direction) from the absorbent main body 2. Further, the water repellent 7 may be held on the inner surface (skin contact surface) of the inner layer sheet 92 of the back sheet 9B, and as shown in FIG. (Y direction) Water repellent on the inner surface (skin contact surface) of the so-called waist elastic region (waist gather) of the inner layer sheet 92 of the abdominal sheet member 9A and the inner layer sheet 92 of the back sheet 9B. The agent 7 may be held.

  The holding of the water repellent agent 7 on each of the abdominal sheet member 9A and the back sheet 9B is performed by putting the solid or semi-solid water repellent agent 7 into the tank of the coating apparatus (applicator) at room temperature and heating it. After the fluidity is improved, the inner layer sheet 92 of each of the abdominal sheet member 9A and the back sheet 9B is coated. After coating the water repellent agent 7 on the interior sheet 92, the water repellent agent 7 becomes solid or semi-solid by leaving it at room temperature, and the water repellent agent 9A and the back sheet 9B are respectively repelled. 7 is adhered and held. As the coating method, a method similar to the method of the hydrophilizing agent 6 described above can be used.

  In the diaper 1E, as in the diaper 1A, as shown in FIG. 8, the hydrophilizing agent 6 is held at the center in the width direction (X direction) of the topsheet 21, and a pair of three-dimensional gathers 3, 3 The water-repellent agent 7 is held in a part of each of the three-dimensional gathers 3 and 3 rising from the top sheet 21 at the time of wearing. Further, in the diaper 1E, as in the diaper 1A, as shown in FIG. 8, the water repellent agent 7 is also held in each of the rising facing portions 21R of the surface sheet 21 facing the rising portions 3R of the three-dimensional gather 3. Yes.

  The formation material of the disposable diaper 1E of 5th Embodiment is demonstrated. About the disposable diaper 1E of 5th Embodiment, a different point from the formation material of 1 A of disposable diapers of 1st Embodiment is demonstrated.

  The outer layer sheet 91 and the inner layer sheet 92 constituting the abdominal sheet member 9A and the back sheet 9B, which are outer layer bodies, can be used without particular limitation as long as they are normally used for absorbent articles such as disposable diapers. Can do. For example, as the outer layer sheet 91 and the inner layer sheet 92, a nonwoven fabric can be used.

The effect at the time of using the disposable diaper 1E of 5th Embodiment of this invention mentioned above is demonstrated.
About the effect of the disposable diaper 1E of 5th Embodiment, a different point from the effect of the disposable diaper 1A of 1st Embodiment is demonstrated. The point which is not demonstrated especially is the same as the effect of 1 A of disposable diapers of 1st Embodiment, and description of the effect of 1 A of disposable diapers of 1st Embodiment is applied suitably.

  As shown in FIG. 8, the diaper 1E is a pants-type disposable diaper, and a part or all of the inner surfaces of the abdomen-side sheet member 9A and the back-side sheet 9B, which are outer layers, are also water repellents 7. Since the skin care agent is retained, it has a skin care effect on the skin that reduces redness due to sweat and rubber marks, and also has a leak-proof effect that prevents exudation of body fluid to the outside.

  The disposable diaper of the present invention includes the disposable diaper 1A of the first embodiment, the disposable diaper 1B of the second embodiment, the disposable diaper 1C of the third embodiment, the disposable diaper 1D of the fourth embodiment, and the fifth embodiment. The disposable diaper 1E is not limited at all, and can be changed as appropriate. Moreover, each component in the disposable diaper of the above-mentioned 1st, 2nd, 3rd, 4th, 5th embodiment can be implemented suitably combining in the range which does not impair the meaning of this invention.

  For example, in the disposable diapers 1A, 1B, 1C, 1D, and 1E of the first, second, third, fourth, and fifth embodiments described above, FIG. 2, FIG. 4, FIG. 6, FIG. As shown, each of the pair of three-dimensional gathers 3 and 3 is an inwardly-folded three-dimensional gather, but may be an outer-folded three-dimensional gather. In the case of an outer-folded three-dimensional gather, a part of the inner surface of the three-dimensional gather Alternatively, it is preferable that the water repellent agent 7 is retained throughout.

  In the disposable diapers 1A, 1B, 1C, 1D, and 1E of the first, second, third, fourth, and fifth embodiments described above, FIG. 1, FIG. 3, FIG. 5, FIG. As shown, the surface sheet 21 constituting the absorbent main body 2 has a hydrophilizing agent coating region 60 formed between both ends in the Y direction of the absorbent main body 2 in the Y direction. It may not be formed in between. For example, the absorptive property is such that the hydrophilizing agent 6 is held at the center in the Y direction of the topsheet 21 constituting the absorbent main body 2 and the hydrophobizing agent 7 is held at both ends of the absorbent main body 2 in the Y direction. You may form the water-repellent agent application area | region 70 extended in a X direction in each both ends of the Y direction of the main body 2. FIG.

  The disposable diaper of the present invention may be a disposable diaper for infants or adults.

1A, 1B, 1C, 1D, 1E Disposable diapers 1s side part 2 absorbent main body 2s side part 21 surface sheet 21R rising facing part 21O facing part with three-dimensional gather 22 back sheet 23 absorber 24 side sheet 25 side flap part 26 leg Flap part 3 Solid gather 3R Standing part 30 Elastic member 4 for forming solid gather 4 Leg gather 40 Elastic member 5 for forming leg gather 5 Fastening tape 6 Hydrophilizing agent 60 Hydrophilizing agent coating region 7 Water repellent agent 70, 70 ' Water repellent coating region 8 Outer layer body 8a, 8b Side edge portion 81 Outer layer sheet 82 Inner layer sheet 9A Abdominal side sheet member 9B Back side sheet member 9a, 9b Side edge portion 91 Outer layer sheet 92 Inner layer sheet

Claims (6)

A liquid-permeable top sheet, a liquid-impermeable back sheet, and a vertically long absorber disposed between the sheets, and a pair of three-dimensional gathers and / or a pair of leg gathers on both sides in the longitudinal direction Are disposable diapers formed by arranging elastic members,
A hydrophilic agent for hydrophilizing the surface sheet is held on a part or the whole of the surface sheet,
Some or all of at least the stereo gathers the pair of standing gathers及beauty a pair of leg gathers is held skin care agent which is also a water repellent to water-repellent gather,
The hydrophilizing agent has the following formula (I)

In Ri skincare der containing diamide derivative represented by,
The water repellent agent is applied to each of the three-dimensional gathers in an expanded state in the width direction, and exceeds the inner side end of each of the three-dimensional gathers in an expanded state. It is applied to a position that covers a part of the surface sheet,
The hydrophilizing agent is applied to the topsheet across the inner ends of the pair of three-dimensional gathers in a state of being expanded in the width direction,
In each of the surface sheets coated with the water repellent agent, the hydrophilic agent is applied in an overlapping manner, and the water repellent agent and the hydrophilic agent are mixed to weakly repel water. Disposable diaper in which the area of is formed .   The disposable diaper according to claim 1, wherein the water-repellent agent is held at each rising portion of the pair of three-dimensional gathers that rise from the top sheet when worn. Pair of standing gathers disposable diaper according to claim 1 or 2 wherein the water-repellent agent on each rising portion opposed to each rising portion facing the top sheet is held raised from the topsheet during instrumentation wear. When each of the pair of three-dimensional gathers is an inwardly folded three-dimensional gather, the water repellent is held on a part or the whole of the outer surface of the three-dimensional gather, and each of the pair of three-dimensional gathers is folded outward. In the case of a three-dimensional gather, the disposable diaper according to any one of claims 1 to 3 , wherein the water repellent agent is held on a part or the whole of the inner surface of the three-dimensional gather. The disposable diaper includes an absorbent main body including the top sheet, the back sheet, and the absorber, and an outer layer body arranged and fixed on the back sheet side of the absorbent main body. A pants-type disposable diaper formed by fusing both side edges of the ventral side and both side edges of the back side,
The disposable diaper according to any one of claims 1 to 4 , wherein the water repellent is held on a part or the whole of the inner surface of the outer layer body. The disposable diaper according to any one of claims 1 to 5, wherein a ratio of the weakly water-repellent region to a total surface area of the topsheet is 3 to 30%.

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