TWI600416B - Absorbent article - Google Patents

Description

Absorbent article

The present invention relates to an absorbent article which can be suitably used by disposing an auxiliary absorbent body on the muscle side surface, and a method for producing the same.

In the past, a method in which an absorbent article (auxiliary absorbent body) is additionally disposed on the muscle side surface of an absorbent article such as a disposable diaper has been known. According to this method, first, the auxiliary absorbent body receives urine or the like from the wearer. Therefore, as long as the auxiliary absorbent body is appropriately replaced, the disposable diaper or the like attached to the outside can be continuously used, whereby the absorbent article can be reduced. Total cost of use. Further, by replacing only the auxiliary absorbent body, the caregiver or the like can easily perform the exchange work as compared with the case of replacing the disposable diaper or the like attached to the outer side of the auxiliary absorbent body.

For example, Patent Documents 1 to 6 disclose various absorbent articles as absorbent articles suitable for use in conjunction with an auxiliary absorbent body. In order to be used in combination with an auxiliary absorbent body, there are various ingenuity in these absorbent articles. For example, the absorbent article disclosed in Patent Documents 2 to 4 is formed such that an opening is provided in the absorbent core, and The auxiliary absorber can be disposed in this opening. In the absorbent article disclosed in Patent Document 5, the top sheet body is provided with a pair of left and right protruding portions extending in the front-rear direction of the absorbent article, and the auxiliary absorbent body is disposed between the pair of left and right protruding portions. In the absorbent article disclosed in Patent Document 6, on the muscle side surface of the absorbent article, the front and rear ends are provided with a belt shape joined to the top sheet body. The elastic holding member is disposed on the belt-shaped elastic holding member so that the auxiliary absorbent body is close to the wearer's skin.

Advanced technical literature

Patent literature

Patent Document 1: International Publication No. 2001/039714

Patent Document 2: Japanese Laid-Open Patent Publication No. 2001-293034

Patent Document 3: Japanese Laid-Open Patent Publication No. 2005-323685

Patent Document 4: Japanese Laid-Open Patent Publication No. 2007-185240

Patent Document 5: Japanese Patent Laid-Open Publication No. 2004-24308

Patent Document 6: Japanese Unexamined Patent Publication No. Hei 5-62227

As described above, various absorbent articles suitable for use with the auxiliary absorbent body have been used in the past. When the auxiliary absorbent body is used, the urine excreted by the wearer is absorbed by the auxiliary absorbent body as much as possible, and the urine or the like is prevented from overflowing. A disposable diaper or the like attached to the outside of the auxiliary absorbent body. In this regard, there has been room for improvement in past absorbent articles.

In view of the above, an object of the present invention is to provide an absorbent article which can appropriately receive urine or the like discharged from a wearer when used in conjunction with an auxiliary absorbent body, and can prevent leakage of urine or the like.

An absorbent article of the present invention which can solve the above problems, comprising: an absorbent body having a front-back direction and a wide-width direction, having a top sheet body and a back sheet, And an absorbent core disposed therebetween; the first flap is disposed on the muscle side surface of the absorber and extends in the front-rear direction; and the second flap is disposed on the muscle side of the absorber and extends in the front-rear direction. The first flaps are respectively provided on both sides of the center line in the width direction of the absorbent body, and are provided with a first elastic member extending in the front-rear direction, and are formed to be inclined outward in the width direction. The second flaps are respectively disposed outside the wide direction of the first flap, and are provided with a second elastic member extending in the front-rear direction.

In the absorbent article of the present invention, the auxiliary absorbent body can be placed on the first flap, and the first flap can be raised by the contraction force of the first elastic member, whereby the auxiliary absorbent body can be applied to the wearer. The skin starts to rise. At this time, since the first flap is erected to the outside in the wide direction, the outer portion of the auxiliary absorbent body in the width direction is pushed up closer to the wearer's skin than the central portion in the wide direction. Further, it is possible to more appropriately receive urine discharged from the wearer. In other words, urine or the like discharged by the wearer does not easily overflow in the wide direction on the surface of the auxiliary absorbent body, and urine or the like can be appropriately absorbed by the auxiliary absorbent body. Further, by providing the second flap outside the wide direction of the first flap, even if urine or the like overflows from the auxiliary absorbent body placed on the first flap, it can be prevented from leaking from the absorbent article. .

Preferably, the first flap has an outer surface of the end portion in the front-rear direction joined to the absorber. By joining the end portions of the outer side surface of the first flap in the front-rear direction and the absorber, it is easy to form the first flap to be tilted outward in the width direction.

Preferably, the second flap has an inner side surface of the end portion in the front-rear direction joined to the absorber, and is formed to be poured toward the inner side in the width direction. By forming the second flap to be poured toward the inner side in the wide direction, urine or the like overflowing from the auxiliary absorbent body does not easily leak over the second flap.

Preferably, the first flap and the second flap are formed such that the first flap is located below the second flap in a state of lodging. When the first flap and the second flap are formed as described above, the rising height of the first flap and/or the second flap can be ensured, and the rise of the second flap is not easily caused by the first flap. Obstruction. Therefore, it is possible to appropriately prevent the horizontal leakage of urine or the like by the second flap. Further, by arranging the auxiliary absorber between the second flaps, the operation of being placed on the first flap can be easily performed.

Preferably, in the absorbent body, a third elastic member extending in the front-rear direction is provided in a region within 20 mm from both side ends of the absorbent core in the width direction. Further, it is preferable that the third elastic member is provided outside and inside the both ends of the absorbent core in the width direction. By providing the third elastic member in the absorbent body as described above, both side ends of the absorbent body in the wide direction are lifted toward the wearer's skin, and as a result, the first flap can be formed closer to the wearer. The skin rises. In addition, the leakage prevention effect can be improved by the second flap.

Preferably, the first flap has a first base as a starting point rising from the absorber, and a first free end as a tip rising from the absorber; the first flap is formed from the first The length of the base portion to the first free end is longer than the length of the center line from the first base portion to the width direction of the absorbent body. When the first flap is formed in this way, even if one of the first flaps falls down toward the inside in the width direction, the other first flap causes an obstacle to easily prevent one of the first flaps from completely falling backward. The inner side of the wide direction. Therefore, it is easy to maintain the state in which the first flap is tilted outward in the wide direction.

The absorbent core has an opening formed at a central portion in the width direction thereof, or a concave portion having a small mass per unit area on the left side portion and the right side portion on both sides in the central portion in the width direction; the first flap As risen from the absorber The first base of the starting point is provided at a position overlapping the opening or the recess. When the absorbent article is configured in this manner, the absorbent core is likely to have a concave shape in the opening or the recessed state in a state in which the wearer wears the absorbent article. As a result, the auxiliary absorbent body placed on the first flap is also easily formed into a shape in which the central portion in the wide direction is recessed, and it is easy to appropriately receive urine or the like discharged from the wearer by the auxiliary absorbent body.

Preferably, the opening or the recess is provided on the front side biased toward the absorber. The opening or the recessed portion is provided on the front side of the absorbent body, whereby the central portion of the absorbent body in the wide direction can be formed to be recessed, and the absorbent body (absorbent core) can be formed near the buttocks of the wearer. Wings, which can improve the wearing sense. Preferably, when the front side end is 0% and the rear side end is 100% as the relative position of the front and rear direction of the absorber, the opening or the rear side end of the recess is located below 75% of the front and rear direction of the absorber. Area. When the opening or the recess is formed in this manner, the wearing feeling of the absorbent article in the vicinity of the buttocks of the wearer is improved.

The opening is formed to extend the entire length of the absorbent core in the front-rear direction, and the absorbent core may be divided in the width direction. Further, the concave portion may be formed to extend the entire length of the absorbent core in the front-rear direction. When the opening or the recessed portion is formed so as to penetrate the entire length of the absorbent core in the front-rear direction, the entire absorbent core is easily bent in the wide direction in the front-rear direction, and the absorbent core is likely to maintain a concave shape in the opening or the recess. As a result, the auxiliary absorber placed on the first flap is also easily formed into a concave shape at the center portion in the wide direction. Further, when the auxiliary absorbent body of various sizes is placed on the first flap, it is possible to easily form a depression in the central portion of the auxiliary absorbent body in the wide direction, and it is easy to appropriately receive the wearer from the auxiliary absorbent body. Urine and so on.

It is preferred that the first flap is disposed on the front side of the absorber. When the first flap is placed on the front side of the absorbent body, the absorbent article can be formed so as not to be swollen in the vicinity of the wearer's buttocks, and the wearing feeling of the absorbent article can be improved. In particular, it is preferable that when the front side end is 0% and the rear side end is 100% as the relative position of the absorber in the front-rear direction, the first flap is disposed such that the rear side end of the first flap is located A region of the absorbent body that is 75% or less in the front-rear direction.

The first flap may be formed to extend the entire length of the absorbent body in the front-rear direction. In this case, the auxiliary absorbent body of various sizes can be placed on the first flap, and even if the auxiliary absorbent body has a slight offset in the front-rear direction, the auxiliary absorbent body can be appropriately topped by the first flap. Start.

The first flap is preferably constituted by a central sheet of another member different from the absorbent body. In this case, the center piece has a first fixing portion joined to the absorber, and a first rising portion extending from the first fixing portion to form the first flap. When the first flap is constituted by the center piece of the other member different from the absorbent body, the first flap has a desired property, and the function of the first flap can be easily improved.

The center piece body is composed of a left center piece provided on the left side of the absorber and a right center piece provided on the right side of the absorber; the first flap provided on the left side in the width direction of the absorber is provided by the left side The center piece is formed, and the first flap provided on the right side in the width direction of the absorber may be formed by the right center piece. When the first flap is configured as described above, when the first flap on the left side and the first flap on the right side are provided at intervals, the amount of use of the center piece can be reduced. Further, when the center piece is liquid-impermeable, the left center piece and the right center piece are disposed at intervals, thereby overflowing from the auxiliary absorber and flowing to the first Urine or the like in the region between the flaps can be properly absorbed by the absorbent core through the topsheet body of the portion between the left central sheet and the right central sheet. As a result, it is easy to prevent urine or the like from leaking from the absorbent article.

The first flap provided on the left and right sides of the absorber may be constituted by a central sheet. In this case, the first flaps provided on the left and right sides of the absorber can be placed in close contact with each other, and the height at which the first flaps rise can be easily ensured.

The first flap may be formed by folding the top sheet into a corrugated shape. In this case, since the first flap and the top sheet body are integrally formed, the first flap can be formed in the manufacturing process of the top sheet body, and the production equipment of the absorbent article can be simplified.

The absorbent core preferably has a mass per unit area of from 60 g/m ² to 450 g/m ² . When the mass per unit area of the absorbent core is in the above range, the absorption property of urine or the like of the absorbent article can be ensured, and the absorbent article does not expand during the wearer's day.

The present invention also provides a method of producing an absorbent article of the present invention as appropriate. The method for producing an absorbent article according to the present invention includes: a first flap forming program for arranging the first elastic member in the center sheet; and a second flap generating program for arranging the second elastic member in the side sheet; The procedure for joining the first flap to the central portion in the width direction of the top sheet body is such that the first elastic member is located outward in the width direction; and the second flap is joined to the width direction of the top sheet body. a program on both sides that causes the second elastic member to be located inward in the width direction; a procedure for disposing the absorbent core on the back sheet; and a top sheet volume layer to be joined to the first flap and the second flap A program on a back sheet configured with an absorbent core. Manufactured by the present invention According to the method, after the first flap and the second flap are joined to the top sheet, and then laminated on the back sheet on which the absorbent core is disposed, the absorption of the first flap and the second flap can be easily produced. Sexual items.

Preferably, the manufacturing method of the present invention further includes a step of disposing the third elastic member on both sides in the width direction of the back sheet, and the absorbent core is disposed in the program for disposing the absorbent core on the back sheet. It is configured such that the third elastic member is disposed in a region within 20 mm from both side ends of the absorbent core in the wide direction. By arranging the third elastic member in this manner, the absorbent article having the third elastic member can be suitably produced.

According to the absorbent article of the present invention, when the auxiliary absorbent body is placed on the first flap, the outer side portion of the auxiliary absorbent body in the wide direction is pushed up to be closer to the wearer's skin than the central portion in the wide direction. The urine or the like discharged by the wearer can be appropriately received by the auxiliary absorbent body. Therefore, urine or the like discharged by the wearer does not easily overflow in the wide direction on the surface of the auxiliary absorbent body, and urine or the like can be appropriately absorbed by the auxiliary absorbent body. Further, even if urine or the like overflows from the auxiliary absorbent body placed on the first flap, it can be prevented from leaking from the absorbent article by the second flap.

1‧‧‧Absorbables

1A‧‧‧Absorbent articles

1B‧‧‧Absorbables

1C‧‧‧Absorbent articles

2‧‧‧ absorber

2B‧‧‧ rear side

3‧‧‧Top sheet

4‧‧‧ Back film

5‧‧‧Absorbent core

6‧‧‧1st flap

6B‧‧‧1st base

6E‧‧‧ rear side

6F‧‧‧1st free end

7‧‧‧1st elastic member

8‧‧‧ center sheet

8L‧‧‧left center piece

8R‧‧‧Right center piece

9‧‧‧2nd flap

9B‧‧‧2nd base

9F‧‧‧2nd free end

10‧‧‧2nd elastic member

11‧‧‧ side sheet

12‧‧‧ openings

12E‧‧‧ rear side

13‧‧‧ recess

14‧‧‧3rd elastic member

15‧‧‧Low elastic members

16‧‧‧ Attached materials

17‧‧‧Substrate sheet

18‧‧‧Fixed parts

20‧‧‧Assistant absorber

21‧‧‧1st flap manufacturing process

22‧‧‧2nd flap manufacturing process

23‧‧‧1st flap setting procedure

24‧‧‧2nd flap setting procedure

25‧‧‧ Attachment material setting procedure

26‧‧‧3rd elastic member configuration procedure

27‧‧‧Absorbent core configuration procedure

28‧‧‧ Assembly procedure

29‧‧‧Individual cutting procedures

31‧‧‧ center sheet

32‧‧‧1st elastic member

33‧‧‧1st flap

34‧‧‧ side body

35‧‧‧2nd elastic member

36‧‧‧2nd wing

37‧‧‧Top sheet

38‧‧‧ Attached materials

39‧‧‧Composite tablets

40‧‧‧ Back film

41‧‧‧3rd elastic member

42‧‧‧Absorbent core

43‧‧‧Continuous body of absorber

44‧‧‧Absorbables

Fig. 1 is a view showing an example of the absorbent article of the present invention, showing a plan view of the absorbent article viewed from the side of the muscle.

Fig. 2 is a cross-sectional view showing the II-II of the absorbent article shown in Fig. 1.

Fig. 3 is a sectional view showing the III-III of the absorbent article shown in Fig. 1.

Figure 4 shows the shape of the auxiliary absorbent body placed on the absorbent article in Figure 2. An example of use of an absorbent article in a state.

Fig. 5 is a plan view showing an absorbent article according to another example of the absorbent article of the present invention.

Fig. 6 is a cross-sectional view taken along line VI-VI of the absorbent article shown in Fig. 5, showing a state in which the first flap and the second flap are laid down.

Fig. 7 is a cross-sectional view taken along line VI-VI of the absorbent article shown in Fig. 5, showing a state in which the first flap and the second flap are raised.

Fig. 8 is a view showing another example of the absorbent article of the present invention, showing a wide-sectional cross-sectional view of the absorbent article.

Fig. 9 is a view showing an example of a method for producing an absorbent article of the present invention, and showing a schematic diagram of a first flap manufacturing process.

Fig. 10 is a view showing an example of a method for producing an absorbent article of the present invention, and showing a schematic diagram of a second flap manufacturing process.

Fig. 11 is a view showing an example of a method of manufacturing an absorbent article according to the present invention, showing a first flap setting program and a second flap setting program.

Fig. 12 is a view showing an example of a method for producing an absorbent article of the present invention, showing an outline of an absorbent core arrangement program and an assembly program.

The absorbent article of the present invention comprises: an absorbent body having an absorbent core between the top sheet body and the back sheet; and the first flaps are disposed on the muscle side surfaces of the absorbent body and are respectively disposed in the width direction of the absorbent body The two sides of the center line; and the second flap are disposed outside the width direction of the first flap. In the absorbent article of the present invention, an absorbent article (hereinafter referred to as "auxiliary absorbent body" of the other absorbent article) is disposed on the muscle side surface as appropriate, and is provided in the absorbent body. The first flap of the muscle side surface lifts the auxiliary absorbent body toward the wearer's skin, and the auxiliary absorbent body can appropriately receive urine or the like discharged by the wearer. The absorbent article of the present invention has a disposable diaper or a urine pad or the like, and is particularly suitable for a disposable diaper.

The absorber has a front-rear direction and a wide direction. The front-rear direction of the absorbent article is a direction in which the wearer wears the absorbent article in the front-rear direction of the wearer's crotch. The wide direction of the absorbent article is such that the direction perpendicular to the front-rear direction on the same surface of the absorbent article corresponds to the left-right direction of the wearer when the absorbent article is worn. Further, in the present invention, the muscle side surface of the absorbent article is a surface facing the wearer's skin when the absorbent article is worn, and the outer surface of the absorbent article is when the absorbent article is worn. The surface faces the side opposite to the wearer.

The absorber is configured such that an absorbent core is disposed between the top sheet body and the back sheet. The shape of the absorbent body is not particularly limited, and the outer edge of the absorbent body and the outer edge of the absorbent article may or may not be the same in plan view. In the case of the former, the absorbent body may constitute the absorbent article itself.

When the absorbent article is a urine pad, the shape of the absorbent body may be a slightly rectangular shape, an hourglass shape, a gourd shape or the like.

When the absorbent article is a disposable diaper, the absorbent article is composed of a front side portion and a rear side portion and a crotch portion having an absorbent core therebetween. The disposable diaper may be, for example, a muscle side surface of an exterior member formed of a front side portion and a rear side portion and a crotch portion therebetween, and an absorbent body in which an absorbent core is disposed between the top sheet body and the back sheet. At this time, the shape of the absorber is a rectangle or the like. The disposable diaper may be such that the absorbent body forms a front side portion and a rear side portion and a crotch portion therebetween. this At the time, the shape of the absorber is an hourglass shape.

The front side portion corresponds to a portion that comes into contact with the ventral side of the wearer when the disposable diaper is worn, and the rear side portion corresponds to a portion that comes into contact with the back side of the wearer when the disposable diaper is worn. The crotch portion is located between the front side portion and the rear side portion and contacts the portion of the wearer's day.

In the case where the absorbent article is a disposable diaper, the disposable diaper may be an open type disposable diaper (belt type) provided with a pair of attachment members at the left and right side ends of the rear side portion, by means of the attached member. The pants shape at the time of wearing is formed, and a pants-type disposable diaper may be formed which forms a waist opening portion and a pair of leg opening portions which are joined by the front side portion and the rear side portion. The pants-type disposable diaper is formed, for example, by providing an absorbent body on a muscle side surface of an exterior member which can be formed into a pants shape.

The top sheet body is a sheet body on the wearer side when the absorbent article is worn, and is preferably liquid permeable. The top sheet may be a non-woven fabric formed of a hydrophilic fiber such as cellophane, anthracene, or cotton, or a polyolefin (for example, polypropylene, polyethylene, or polyester) (for example, polypropylene, polyethylene, or polyester) A non-woven fabric formed of a hydrophobic fiber such as polyester (for example, PET) or a polyamine (for example, nylon), or a material obtained by hydrophilic treatment with a surfactant on the surface of the hydrophobic fiber. Further, the top sheet body may be made of a woven fabric, a braided cloth, a plastic film having an opening, or the like.

The back sheet is a sheet which is located on the opposite side of the wearer, that is, the outer side, when the disposable diaper is worn, which is preferably liquid-impermeable. The back sheet may be a polyolefin (for example, polypropylene, polyethylene, polyester (for example, PET), polyamine (for example: Non-woven fabric formed of hydrophobic fibers such as nylon), or a plastic film. Further, a laminate of a non-woven fabric and a plastic film may also be used. In the present invention, the so-called liquid impermeability also includes the meaning of water repellency.

The exterior member may be liquid permeable or liquid impervious, and a sheet material which can be used for the top sheet or the back sheet can be used. The outer member is formed such that the outer sheet volume layer is preferably on the inner sheet, and the liquid impermeable outer sheet volume layer is more preferably on the hydrophilic inner sheet.

When a nonwoven fabric is used as the sheet material described above, the nonwoven fabric may be a spun bond nonwoven fabric, an air through nonwoven fabric, a point bond nonwoven fabric, a meltblown nonwoven fabric, or a paper fiber ( Air-laid) Non-woven fabrics, SMS non-woven fabrics, etc. are preferred.

The absorbent core is not particularly limited as long as it contains an absorbent material capable of absorbing excrement such as urine. For example, a shaped body in which an absorbent material is formed into a specific shape can be used as the absorbent core. The absorbent core may be covered with a sheet member such as a paper sheet (for example, a face paper or a thin leaf paper) or a liquid permeable non-woven fabric. The absorbent material contained in the absorbent core is, for example, a hydrophilic fiber such as cellulose fibers (for example, pulverized wood pulp fibers), or a polyacrylic acid, asparagin, or cellulose. A water-absorbent resin such as a starch or an acrylonitrile system. Further, the absorbent material may include a polyolefin fiber such as polyethylene or polypropylene, or a heat-fusible fiber such as a polyester fiber such as PET or a polyamine fiber such as nylon. These heat-fusible fibers can be hydrophilically treated with a surfactant to improve their affinity with body fluids such as urine.

In terms of improving the absorption speed of urine, etc., absorbent materials It is preferred to include a hydrophilic fiber. Further, in terms of improving the absorption capacity, the absorbent material preferably contains a water absorbent resin. Therefore, the absorbent core preferably contains a water absorbent resin (particularly wood pulp fibers) and a water absorbent resin. In this case, for example, it is preferred to use a mixture of a water-absorbent resin mixed or dispersed in an aggregate of hydrophilic fibers.

Water-absorbent fibers can be used as the absorbent material. The water-absorbing fiber is a fiber containing a carboxyl group which is protonated or salted. For example, it is disclosed in Japanese Patent Publication No. Sho 52-42916 that the acrylic fiber can be hydrolyzed to convert a nitrile group in the acrylic fiber into a carboxyl group to obtain a water-absorbent fiber. At this time, the carboxyl group contained in the water absorbent fiber is preferably an alkali metal salt or an ammonium salt. Further, the water-absorbent fiber can be produced by immersing the hydrophilic fiber in acrylic acid to precipitate acrylic acid on the surface of the fiber. When the absorbent core is made of water-absorbent fibers, it can be formed into a thin absorbent core, and even when the absorbent article is used in combination with the auxiliary absorbent body, the absorbent article is not enlarged by the user's day. Wear feeling.

The mass per unit area of the absorbent core is not particularly limited. However, in order to ensure the absorption performance of urine and the like, and the absorbent article is not easily swollen between the user's crotch, it is in the range of 60 g/m ² to 450 g/m ² . can. Further, the mass per unit area of the absorbent core is preferably changed as appropriate depending on the kind of the absorbent material to be used. For example, when the absorbent core contains hydrophilic fibers or more includes a water-absorbent resin, the absorbent core The mass per unit area is preferably from 100 g/m ² to 450 g/m ² (preferably from 120 g/m ² to 300 g/m ² ). When the absorbent core is composed of water-absorbent fibers, the mass per unit area of the absorbent core is preferably 60 g/m ² to 150 g/m ² (preferably 70 g/m ² to 120 g/m ² ).

The shape (planar shape) of the absorbent core is not particularly limited. The shape of the absorbent core may be appropriately determined in accordance with the use, for example, a rectangular shape, an hourglass shape, a gourd shape, a feather shape, or the like. Further, the absorbent core may be formed as an opening or divided in a wide direction as will be described later.

The absorbent core is preferably disposed at a slightly center in the front-rear direction with respect to the absorbent body. That is, the center of the front-rear direction of the absorbent core and the center of the front-rear direction of the absorbent body are almost uniform, and specifically, the center of the front-rear direction of the absorbent core is preferably within 20 mm of the center of the front-rear direction of the absorbent body. Better within 15mm. Further, the length of the absorbent core in the front-rear direction is preferably 75% or more of the length of the absorbent body in the front-rear direction, more preferably 80% or more, further preferably 95% or less, more preferably 90% or less. By disposing the absorbent core in the absorbent body as described above, it is possible to prevent urine or the like from leaking from the absorbent core and to secure a sufficient absorption capacity.

In the absorbent article of the present invention, the first flaps extending in the front-rear direction are provided on both sides of the center line of the absorbent body in the width direction (the center line extending in the front-rear direction) on the muscle side surface of the absorbent body. The first flap is provided to mount the auxiliary absorber. The first elastic member is provided in the first elastic member, and the first elastic member is raised by the contraction force of the first elastic member, whereby the auxiliary absorbent body placed on the first flap is oriented. The wearer's skin is lifted up.

In the present invention, the center line in the wide direction of the absorbent body is determined in a state in which the contraction force of the elastic member provided on the absorbent article is released. That is, in the case where the elastic member is provided on the absorbent article, the elastic member is removed from the absorbent article, or the elastic member is cut into pieces without the contraction force of the elastic member. In this state, the center line of the absorbent body in the width direction is specified.

The first flap is formed to be dumped to the outside in the wide direction. In other words, the first flap is formed to rise toward the wearer's skin by the contraction force of the first elastic member. However, at this time, the first flap is formed to stand up to be tilted outward in the width direction. When the first flap is erected and tilted toward the outside in the wide direction, the outer portion of the auxiliary absorbent body in the wide direction is pushed up closer to the wearer's skin than the central portion in the wide direction. The auxiliary absorbent body more appropriately receives urine or the like discharged from the wearer. In other words, urine or the like discharged by the wearer does not easily overflow in the wide direction on the surface of the auxiliary absorbent body, and urine or the like can be appropriately absorbed by the auxiliary absorbent body.

The first flap has a first base which is a starting point rising from the absorber, and a first free end which is a tip which rises from the absorber. The first flap is formed such that a portion between the first base and the first free end rises from the absorber.

It is preferable that the first elastic member is disposed on the first flap in the extended state. It is preferable that the first elastic member is provided in the vicinity of the first free end of the first flap, and for example, at least within 15 mm from the first free end (more preferably within 10 mm).

Since the first flap is formed to be inclined outward in the wide direction, it is preferable that the first flap has the outer surface of the end portion in the front-rear direction joined to the absorber. In this case, the first flap has better outer surface and the absorber at the end portion in the front-rear direction in the vicinity of the first free end, and the entire width direction is better joined to the absorber. Further, in the first flap, the outer surface of both end portions in the front-rear direction is preferably joined to the absorber. In addition, the outer side surface of the first flap is an outer side surface in the width direction of the first flap in a state where the first flap is raised. The joining of the first flap and the absorber can be performed by a bonding method such as an adhesive, a hot melt, or a supersonic fusion. The outer side of the end portion in the rear direction before the first flap is joined to the absorption In the case of the body, the first elastic member is not provided at the end portion in the rear direction of the first flap, and the intermediate portion in the front-rear direction of the first flap is preferable.

In the absorbent article of the present invention, the first flap and the second flap are provided on the muscle side surface of the absorbent body. The second flaps extend in the front-rear direction and are respectively disposed outside the first flap in the width direction. In other words, the second flaps are respectively disposed outward in the width direction of the first flaps provided on both sides of the center line in the wide direction. Therefore, a total of four flaps are provided on the muscle side of the absorbent body together with the first flap and the second flap. The second flap is provided to prevent leakage of urine or the like. The second flap is equivalent to a leak-proof flap provided on a general absorbent article.

The second flap is provided with a second elastic member extending in the front-rear direction, and the second flap is raised by the contraction force of the second elastic member, whereby even the urine is placed on the first flap. When the upper auxiliary absorber overflows, it can also be prevented from leaking from the absorbent article. The second flap has a second base that serves as a starting point for rising from the absorber, and a second free end that is a tip that rises from the absorber. The second flap is formed such that a portion between the second base and the second free end rises from the absorber.

It is preferable that the second elastic member is disposed on the second flap in the extended state. It is preferable that the second elastic member is provided in the vicinity of the second free end of the second flap, and for example, at least within 15 mm from the second free end (better than 10 mm).

It is preferable that the second flap is formed to be poured toward the inner side in the wide direction. In other words, the second flap is formed to stand up against the skin side of the wearer by the contraction force of the second elastic member. In this case, it is preferable that the second flap is formed so as to stand up to the inner side in the wide direction. By the second flap formed to be poured into the inner side in the wide direction, from the auxiliary absorption The urine overflowing from the body does not easily leak over the second flap.

Since the second flap is formed to be poured toward the inner side in the width direction, the inner side surface of the end portion of the second flap in the front-rear direction is preferably joined to the absorber. At this time, the second flap has a better inner side surface of the end portion in the front-rear direction in the vicinity of the second free end and the absorber, and the entire width direction is better joined to the absorber. Further, in the second flap, the inner side surfaces of the both end portions in the front-rear direction are preferably joined to the absorber. In addition, the inner side surface of the second flap is an inner side surface in the width direction of the second flap in a state where the second flap is raised. The joining of the second flap and the absorber can be carried out by a bonding method such as an adhesive, a hot melt, or a supersonic fusion. When the inner side surface of the end portion in the rear direction before the second flap is joined to the absorber, the second elastic member is not provided at the end portion in the rear direction before the second flap, but is provided on the second flap. The intermediate portion in the front-rear direction is preferred.

The second flap may be provided so as to penetrate the entire length of the absorbent body in the front-rear direction, or may be provided in a part of the front-rear direction of the absorbent body. In addition, the length of the second flap is 60% or more in the front-rear direction of the absorber by the second flap to prevent leakage of urine or the like from the absorbent article (70% or more, more preferably 80% or more). Good) better.

It is preferable that the second flap is not overlapped with the first flap. That is, it is preferable that the first flap and the second flap are formed to be separated from each other in the collapsed state. When the first flap and the second flap are formed in this manner, it is easy to raise both the first flap and the second flap when the absorbent article is used. In addition, the first flap and the second flap are in a state of lodging, and the first flap and the second flap are placed on the absorber.

The first flap and the second flap may be arranged to overlap. In this case Next, the first flap and the second flap are formed such that, in the collapsed state, the first flap is preferably located on the lower side of the second flap. When the first flap and the second flap are formed in this manner, the height of the first flap and/or the second flap can be ensured, and the rise of the second flap is not easily blocked by the first flap. It is possible to prevent leakage of urine or the like by the second flap. Further, by arranging the auxiliary absorber between the second flaps, the operation of placing the auxiliary absorber on the first flap can be easily performed.

In the absorbent article of the present invention, it is preferable that the third elastic member is provided in the vicinity of both sides in the width direction of the absorbent core. Specifically, in the absorbent body, a region extending within 20 mm from both side ends of the absorbent core in the wide direction (better within 15 mm, and preferably within 10 mm) is provided in the front-rear direction. 3 elastic members are preferred. By providing the third elastic member to the absorber in this manner, the both side ends of the absorbent body in the wide direction are lifted toward the wearer's skin, and as a result, the first flap can be formed closer to the wearer. Stand up with the skin. In addition, the leakage prevention effect of the second flap can also be improved. In addition, the third elastic member is provided at least 20 mm from both sides in the width direction of the absorbent core in at least the central portion in the front-rear direction of the absorbent core (the portion including the center of the absorbent core in the front-rear direction). The area within can be.

The third elastic member is disposed closer to the outer side than the both side ends in the wide direction of the absorbent core, and is preferably provided on the inner side. By providing the third elastic member in this manner, it is easy to push the both side ends of the absorbent body in the wide direction toward the wearer's skin.

The third elastic member may be attached to any of the members constituting the absorbent body, but it is preferably mounted on the back sheet. By attaching the third elastic member to the back sheet, it is easy to lift the absorbent core toward the wearer's skin. For example, the third bomb The position of the member is preferably described later between the back sheet and the top sheet, between the back sheet and the absorbent core, and between the back sheet and the sheet member of the second flap (the side sheet to be described later, etc.). .

As the elastic member described above, an elastic stretchable material generally used for an absorbent article such as a polyurethane wire, a polyurethane film, or a natural rubber can be used. The elastic member is preferably fixed in a stretched state by means of a hot melt adhesive, a hot melt, a supersonic fusion or the like. For example, the polyurethane line having a fineness of 100 to 2,500 dtex is stretched to a magnification of 1.1 to 5.0 times and then set and fixed. The joining method is preferably a rubber-based hot melt adhesive.

The first flap of the absorbent article provided in the present invention will be described in more detail. The first flaps are respectively disposed on both sides of the center line of the absorbent body in the width direction. However, in order to appropriately raise the auxiliary absorbent body by the first flap, the first flap is provided as the slave flap. It is preferable that the first base portion of the starting point at which the absorbent body rises is located in the vicinity of the center line in the width direction of the absorbent body. Specifically, the first base portion is provided in a region within 25 mm from the center line in the width direction of the absorbent body, and the region within 20 mm is more preferable, and the region within 15 mm is particularly preferable. Further, the length between the first base portions of the first flaps provided on both sides of the center line in the width direction of the absorbent body is preferably 50 mm or less, more preferably 40 mm or less, and particularly preferably 30 mm or less.

The first flap formation is preferably as long as the length from the first base which is the starting point rising from the absorber to the first free end which is the tip rising from the absorber, and is longer than the width from the first base to the absorber. The length of the centerline of the direction. When the first flap is formed in this manner, it is easy to maintain the state in which the first flap is tilted outward in the wide direction. That is, even if one of the first flaps falls to the inner side in the width direction, The first flap of the other side will cause an obstacle to easily prevent one of the first flaps from completely falling into the inner side of the wide direction. In addition, it is easy to ensure the height at which the first flap rises, and it is easy to bring the auxiliary absorbent body to the vicinity of the wearer's skin. More preferably, the first flap is formed to have a length from the first base portion to the first free end, and is longer than a length between the first base portions of the first flaps provided on both sides of the center line in the width direction of the absorbent body.

The first flap is provided, for example, to extend the entire length of the absorber in the front-rear direction. In this case, the auxiliary absorbent body of various sizes can be placed on the first flap, and even if the auxiliary absorbent body has a slight offset in the front-rear direction, the auxiliary absorbent body can be appropriately topped by the first flap. Start.

The first flap may be provided in a part of the front and rear direction of the absorber. In this case, it is preferable that the first flap is provided on the front side of the deflecting absorber. When the first flap is provided on the front side of the deflecting absorber, the absorbent article can be formed so as not to be swollen in the vicinity of the wearer's buttocks, and the wearing feeling of the absorbent article can be improved. When the auxiliary absorbent body is disposed on the muscle side surface of the absorbent article of the present invention, the length of the auxiliary absorbent body in the front-rear direction is often shorter than that of the absorbent body. In this case, the auxiliary absorbent body is disposed in the deflecting absorbent body. Front side. In other words, by providing the first flap on the front side of the deflecting absorber, the first flap can be provided in the portion where the auxiliary absorbent body is disposed, and the rear side portion of the absorbent body in which the auxiliary absorbent body is disposed is not provided. Set the 1st flap. As a result, when the absorbent article is worn, the first flap is not present near the buttocks of the wearer, and the wearing feeling of the absorbent article in the vicinity of the buttocks can be improved. In particular, when the absorbent article of the present invention is used in a state of supine position, the first flap is provided on the front side of the deflecting body, and is formed to be refreshed near the buttocks of the absorbent article, and the wearer It is not easy to feel uncomfortable feeling near the buttocks.

Specifically, when the first flap is provided in a part of the front-rear direction of the absorber, it is preferable to provide the first flap as a position to be described later. That is, when the first flap is 0% and the rear end is 100% as the relative position of the absorber in the front-rear direction, the first flap is set such that the first flap is The rear side end is located in a region of 75% or less of the front-rear direction of the absorbent body. It is more preferable that the rear end of the first flap is located at 70% or less of the front-rear direction of the absorbent body, and it is particularly preferable that the rear end of the first flap is located at a region of 65% or less of the front-rear direction of the absorbent body. By arranging the first flap on the absorber as described above, the first flap can be eliminated in the vicinity of the buttocks of the wearer. Further, it is preferable that the rear end of the first flap is located at a region of 50% or more of the front-rear direction of the absorbent body. Although the position of the front side end of the first flap is not particularly limited, it is preferably in the range of 0% to 25% in the front-rear direction of the absorbent body, and more preferably in the region of 0% to 20%.

The method of forming the first flap is not particularly limited. The first flap may be formed by attaching another member to the absorber, or the member constituting the absorber may be appropriately folded back to form the first flap. The constituent material of the first flap is not particularly limited, and it may be liquid permeable or liquid impermeable.

For example, the first flap is composed of a central sheet of another member different from the absorbent body. The center sheet can use a sheet material that can be used for the top sheet or the back sheet. When the first flap is configured by the center piece, the center piece has a first fixing portion joined to the absorber, and a first rising portion extending from the first fixing portion to form the first flap. The first fixing portion of the center sheet is joined to the top sheet body such as the absorbent body. The first standing portion is not joined to the absorber. If the first flap is formed by the central sheet of another member different from the absorbent body, the first flap has a desired property. For example, when the center sheet is joined to the top sheet body, 1 The flap is formed to be liquid impermeable unlike the top sheet. Further, by using a center piece having a large mass per unit area, it is easy to make the first flap have rigidity. The central sheet may be joined to the absorbent body by means of an adhesive, heat fusion followed by ultrasonic fusion.

The first flaps provided on the left and right sides in the width direction of the absorbent body may be composed of one central sheet body or may be composed of different center sheets. In the former case, the first fixing portion is formed at the center portion in the width direction of the center sheet, and the first rising portion is formed on both sides in the width direction of the center portion. In this case, the first flaps provided on the left and right sides of the absorber can be placed in close contact with each other, and the height at which the first flaps rise can be easily ensured.

In the case where the first flaps provided on the left and right sides of the absorber are respectively formed of different center sheets, the center sheet body is composed of a left center sheet body disposed on the left side of the absorber and a right center sheet body disposed on the right side. The first flap provided on the left side in the width direction of the absorbent body is formed by the left center sheet body, and the first flap provided on the right side in the width direction of the absorbent body is formed by the right center sheet body. That is, the first rising portion of the left center piece body forms the first flap provided on the left side, and the first rising portion of the right center sheet body forms the first flap provided on the right side. When the first flap is configured as described above, when the first flap on the left side and the first flap on the right side are provided at intervals, the amount of use of the center piece can be reduced. Further, when the center sheet is liquid-impermeable, the left central sheet body and the right central sheet body are provided at intervals, and the urine overflows from the auxiliary absorbent body and flows to the region between the first flaps. The top core of the portion between the left central sheet and the right central sheet can be properly absorbed by the absorbent core. As a result, it is easy to prevent urine or the like from leaking from the absorbent article.

The first flap may be formed by folding the top sheet into a wrinkle shape. In this case, the first flap and the top sheet body are formed integrally. Therefore, the first flap can be formed in the manufacturing process of the top sheet body, and the production equipment of the absorbent article can be simplified.

The method of forming the second flap is not particularly limited. The second flap may be formed by attaching another member to the absorber, or the member constituting the absorber may be appropriately folded back to form the second flap. The constituent material of the second flap is not particularly limited, and it is preferably liquid-impermeable.

For example, the second flap is composed of a side panel of another member different from the absorbent body. The side sheet body can use a sheet material which can be used for the back sheet. In the case where the second flap is constituted by the side panel of the other member different from the absorbent body, the side panel is provided on both sides in the width direction of the absorbent body. The side panel body has a second fixing portion joined to the absorber, and a second rising portion that extends from the second fixing portion in the width direction to form the second flap, and the second fixing portion of the side sheet body and, for example, the top sheet body The sides of the wide direction are joined. The second rising portion is not joined to the absorber. If the second flap is formed by the side panel of the other member different from the absorbent body, the second flap has a desired property. The side panels may be joined to the absorbent body by means of an adhesive, heat fusion followed by ultrasonic fusion.

The second flap can be formed by folding back the back sheet along both side ends of the absorbent core in the width direction toward the muscle side of the absorbent body. For example, when the absorber is formed in a substantially rectangular shape, the second flap can be formed as described above.

In the absorbent article of the present invention, in order to more appropriately exhibit the function of the first flap, it is preferable to form an opening in the central portion in the wide direction of the absorbent core. Or, the left side portion on both sides of the absorbent core is formed in the central portion in the wide direction. It is preferable that the concave portion having a small mass per unit area on the right side portion. Further, it is preferable that the first base of the first flap is superposed on the opening or the recess. That is, it is preferable that the first base portion of the first flap is provided at a position overlapping the opening or the recess. When the absorbent article is configured as described above, the absorbent core is likely to have a concave shape in the opening or the recessed portion in a state in which the wearer wears the absorbent article, that is, a V-shaped cross section in the wide direction. As a result, the auxiliary absorbent body placed on the first flap is also easily formed into a shape in which the central portion in the wide direction is recessed, and it is easy to appropriately receive urine or the like discharged from the wearer by the auxiliary absorbent body. In addition, the center portion in the wide direction of the absorbent core is defined as a portion having a center in the width direction of the absorbent core and having a predetermined length in the width direction.

The opening is formed to penetrate the thickness direction of the absorbent core, and the absorbent core is divided in the width direction. The recess is formed such that the mass per unit area of the absorbent core is small. For example, it is preferable that the concave portion is formed in a central portion in the width direction of the absorbent core, and the mass per unit area is 60% by mass or less (more preferably 50% by mass or less). It is preferably 40% by mass or less, preferably. Further, the concave portion may not necessarily be formed as a concave side of the muscle side or the outer side surface of the absorbent core.

The opening or the recess is provided along the first base, and it is preferably extended in the front-rear direction to the absorbent core. Specifically, the opening or the recess is formed such that the length in the front-rear direction is larger than the length in the wide direction.

For example, the opening or the recess is formed to extend the entire length of the absorbent core in the front-rear direction. When the opening is formed to penetrate the entire length of the absorbent core in the front-rear direction, the absorbent core is divided in the width direction. In this case, the absorptive core consists of a left absorptive core disposed on the left side in the width direction, and The right side absorbent core on the right side of the broad direction forms a groove with no absorbent core between the left absorbent core and the right absorbent core. When the opening or the recessed portion is formed to extend the entire length of the absorbent core in the front-rear direction, the entire length of the absorbent core in the entire front-rear direction is easily bent in the wide direction, so that the absorbent core easily maintains the shape of the opening or the recessed portion. . As a result, the auxiliary absorber placed on the first flap is also easily formed into a shape in which the central portion in the wide direction is recessed. Further, even when the auxiliary absorbent body of various sizes is placed on the first flap, it is easy to form the central portion of the auxiliary absorbent body in the wide direction into a concave shape, and even if the auxiliary absorbent body has a slight offset in the front-rear direction At this time, it is also easy to form the central portion of the auxiliary absorbent body in the wide direction into a concave shape. As a result, it is easy to appropriately receive urine or the like discharged by the wearer with the auxiliary absorbent body.

The opening or recess may also be provided in a portion of the absorbent core in the fore and aft direction. In this case, it is preferable that the opening or the recess is provided on the front side of the deflecting body. The length of the auxiliary absorbent body in the front-rear direction is mostly shorter than that of the absorbent body. In this case, the auxiliary absorbent body is disposed on the front side of the deflecting absorbent body. In other words, by providing the opening or the recessed portion on the front side of the deflecting body, the central portion of the auxiliary absorbent body in the wide direction can be formed into a concave shape, and the absorbent body (absorbent core) can be placed on the wearer's buttocks. The flaps are formed nearby, and the wearing feeling can be improved. When the absorbent article of the present invention is formed as described above, in particular, when the absorbent article of the present invention is used in a state of supine position, it is easy to appropriately receive urine or the like discharged from the wearer by the auxiliary absorbent body.

Specifically, in the case where the opening or the recess is provided in a part of the front-rear direction of the absorber, the opening or the recess is preferably provided as will be described later. That is, when the front side end is 0% and the rear side end is 100% as the front and rear direction phase of the absorber In the case of the position, the opening or the recess is provided such that the rear end of the opening or the recess is located in a region of 75% or less of the front-rear direction of the absorber. The rear end of the opening or the recess is preferably located in a region of 70% or less of the front-rear direction of the absorbent body, and the rear end of the opening or the recess is preferably located in a region of 65% or less of the front-rear direction of the absorbent body. By providing an opening or a recess as described above, the absorbent body (absorbent core) can form a flap near the buttocks of the wearer. Further, it is preferable that the rear end of the opening or the recess is located in a region of 50% or more of the front-rear direction of the absorber. Although the position of the front end of the opening or the recess is not particularly limited, it is preferably 0% to 25% in the front-rear direction of the absorber, and more preferably 3% to 20%.

In the absorbent article, the first flap is provided to be biased toward the front side in the front-rear direction of the absorbent body, and it is preferable that the opening or the recess is also provided to the front side in the front-rear direction of the absorbent body. When the absorbent article is configured as described above, the wearing feeling of the absorbent article in the vicinity of the buttocks can be improved. Further, when the first flap and the opening or the recess are 0% of the front end and 100% of the rear end are the relative positions of the absorber in the front-rear direction, the rear end of the first flap and the rear of the opening or recess It is preferable that the side ends are located at a region of 75% or less of the front-rear direction of the absorbent body.

Next, the absorbent article of the present invention will be described with reference to the drawings. An open type (belt type) disposable diaper is shown as an absorbent article in the drawings. Further, the present invention is not limited to the embodiment shown in the drawings.

Figs. 1 to 4 show an example of the absorbent article of the present invention. Fig. 1 is a plan view showing an absorbent article of an open type disposable diaper viewed from a muscle side, Fig. 2 is a cross-sectional view taken along line II-II of the absorbent article shown in Fig. 1, and Fig. 3 is a view showing absorption in Fig. 1. III-III cross-sectional view of the sexual article, and FIG. 4 shows the use of the absorbent article in the state where the auxiliary absorbent body is placed on the absorbent article in FIG. example. In the drawing of the present invention, the arrow x indicates the width direction, the arrow y indicates the front-rear direction, and the vertical direction with respect to the plane formed by the arrow x and the arrow y indicates the thickness direction z. Further, in the first drawing, the upper side of the drawing corresponds to the front side in the front-rear direction, and the lower side of the drawing corresponds to the rear side in the front-rear direction. In addition, in the first figure, the first flap and the second flap are in a state of being laid down. However, in the second diagram, the first flap and the second flap are in a state of being raised.

In the absorbent article 1 (1A), the absorbent core 5 is disposed between the top sheet body 3 and the back sheet 4, and the absorber 2 having the front-back direction y and the width direction x is provided. The top sheet body 3 is disposed to face the wearer's skin, and allows excrement such as urine to pass through. The excretion through the topsheet 3 is absorbed by the absorbent core 5.

A pair of attachment members 16 are provided at the left and right end portions of the rear side portion of the absorber 2 in the front-rear direction y. The attachment member 16 is configured such that a fixing member 18 is provided on the base sheet body 17. The absorbent article 1A can be worn by abutting the absorbent body 2 between the wearer's crotch and joining the fastener 18 to the outer side surface of the front side portion of the absorbent body 2. A hook/loop/unbuttoned hook member or an adhesive may be used as the fixing member 18.

As shown in Fig. 1, the center sheet body 8 is attached to the central portion of the absorbent body 2 in the width direction x of the muscle side surface of the absorbent body 2. In detail, the left center piece 8L is provided on the left side of the width direction x of the absorber 2, and the right center piece 8R is provided on the right side of the width direction x of the absorber 2. The center piece 8 has a first fixing portion joined to the absorber 2, and a first rising portion that extends from the first fixing portion and is not joined to the absorber 2, and the first flap 6 is formed by the first rising portion.

The first flaps 6 extend in the front-rear direction y and are respectively provided on both sides of the center line C of the absorbent body 2 in the width direction x. In the first flap 6, a first elastic member 7 extending in the front-rear direction y is provided. The first flap 6, as shown in Figure 3, before and after When the outer surface of the end portion of the direction y is joined to the absorber 2 and is raised by the contraction force of the first elastic member 7, as shown in Fig. 2, it is formed to be poured outward in the width direction x. Look like. In the absorbent article 1A, by providing the first flap 6, the auxiliary absorbent body 20 can be placed on the first flap 6 as shown in Fig. 4, and the auxiliary absorbent body 20 can be worn by the first flap 6. The user's skin is lifted up. At this time, the outer portion of the auxiliary absorbent body 20 in the width direction x is pushed up closer to the wearer's skin than the central portion in the wide direction x, and as a result, the auxiliary absorbent body 20 can be more appropriately received. Wear urine from the user.

As shown in Fig. 2, the first flap 6 has a first base portion 6B as a starting point rising from the absorber 2, and a first free end 6F as a tip end rising from the absorber 2, which is formed as The length from the first base portion 6B to the first free end 6F is longer than the length from the first base portion 6B to the center line C in the width direction x of the absorber 2. When the first flap 6 is formed in this manner, it is easy to maintain the state in which the first flap 6 is tilted outward in the wide direction x.

In the absorbent article 1A, the second flap 9 extending in the front-rear direction y is provided on the muscle side surface of the absorbent body 2 outside the width direction x of the first flap 6. As shown in Fig. 2, the second flaps 9 are formed by arranging the side sheets 11 on both sides in the width direction x of the top sheet body 3. The side panel body 11 has a second fixing portion joined to the absorber 2 and a second rising portion that extends from the second fixing portion to form the second flap 9, and the second flap 9 is formed by the second rising portion. As shown in FIG. 2, the second flap 9 has a second base portion 9B as a starting point rising from the absorber 2, and a second free end 9F as a tip end rising from the absorber 2.

The second flap 9 is provided with a second elastic member 10 extending in the front-rear direction y, and the second flap 9 is raised by the contraction force of the second elastic member 10. By the second The wing 9 can prevent leakage from the absorbent article 1A even when urine or the like overflows from the auxiliary absorbent body 20 placed on the first flap 6. In the absorbent article 1A, as shown in Fig. 3, the second flap 9 is joined to the absorbent body 2 at the end surface of the end portion in the front-rear direction y, and is raised by the contraction force of the second elastic member 10. At the time of the drawing, as shown in FIG. 2, it is formed so as to fall inward in the width direction x.

In the absorbent article 1A, an opening 12 is formed in a central portion of the absorbent core 5 in the width direction x, and the first base portion 6B of the first flap 6 and the opening 12 are overlapped. In the absorbent article 1A, the opening 12 is formed so as to penetrate the entire length of the absorbent core 5 in the front-rear direction y, and the absorbent core 5 is divided in the width direction x. As a result, in the absorbent article 1A, the cross section of the absorbent core 5 in the width direction x is easily formed into a substantially V shape, whereby the auxiliary absorbent body 20 placed on the first flap 6 is also formed into a wide width. The shape of the central portion of the direction x is concave. Therefore, it is easy to appropriately receive urine or the like discharged from the wearer by the auxiliary absorbent body 20.

In the absorber 2, a third elastic member 14 extending in the front-rear direction y is provided in the vicinity of both side ends of the absorbent core 5 in the width direction x. The third elastic member 14 is disposed closer to the outer side than both side ends of the absorbent core 5 in the width direction x, and is also provided inside. By providing the third elastic member 14 in the absorber 2 as described above, both end faces of the absorbent body 2 in the width direction x are pushed up toward the wearer's skin, and as a result, the first flap 6 can be formed. Stand up closer to the wearer's skin. In addition, the leakage prevention effect can be improved by the second flaps 9.

The absorbent article 1A is provided at both end portions of the absorbent body 2 in the front-rear direction y, and is provided with a waist elastic member 15 extending in the width direction x. The waist elastic wrap 15 forms a waist wrinkle around the wearer's waist, and prevents excrement such as urine from leaking from the back side or the ventral side.

Next, referring to Figs. 5 to 7, an absorbent article different from the absorbent article shown in Figs. 1 to 4 will be described. Fig. 5 is a plan view showing an absorbent article of an open type disposable diaper viewed from the side of the muscle, and Fig. 6 is a cross-sectional view taken along line VI-VI of the absorbent article shown in Fig. 5. In the fifth and sixth figures, the state in which the first flap and the second flap are laid down is shown. Fig. 7 also shows a cross-sectional view taken along line VI-VI of the absorbent article shown in Fig. 5, but Fig. 7 shows a state in which the first flap and the second flap are erected. In the description of the fifth to seventh embodiments, the description of the portions in which the above description is repeated will be omitted.

In the absorbent article 1 (1B) shown in FIGS. 5 to 7, the first flap 6 provided on the left and right sides in the width direction x of the absorbent body 2 is composed of one center piece 8. The center piece 8 has a central portion in the width direction x fixed to the muscle side surface of the absorber 2, and a first flap 6 is formed on both sides of the central portion in the width direction x.

In the absorbent article 1B, as shown in Fig. 5, the first flap 6 is provided on the front side of the deflecting body 2. Further, when the front side end 2A is 0% and the rear side end 2B is 100% as the relative position of the front-rear direction y of the absorbent body 2, the first flap 6 is disposed to be located at the rear side end 6E of the first flap 6 A region of 75% or less of the front-back direction y of the absorber 2. By arranging the first flaps 6 as described above, the absorbent article 1B can be formed so as not to be swollen in the vicinity of the buttocks of the wearer, and the wearing feeling can be improved.

In the absorbent article 1B, the opening 12 is provided in the absorbent core 5, but the opening 12 is provided on the front side of the deflecting body 2. When the front side end 2A is 0% and the rear side end 2B is 100% as the relative position of the front-rear direction y of the absorbent body 2, the opening 12 provided in the absorbent core 5 is disposed such that the rear side end 12E of the opening 12 is located A region of the absorber 2 that is 75% or less of the front-rear direction y. Further, the first base portion 6B of the first flap 6 and the opening 12 are overlapped (see FIGS. 6 and 7). With this in The absorbent core 5 is provided with an opening 12 so that the central portion of the auxiliary absorbent body in the width direction x has a concave shape, and the absorbent body 2 (absorbent core 5) is formed in the vicinity of the wearer's buttocks, thereby improving Wear feeling.

As shown in Fig. 6, the absorbent article 1B is formed such that the first flap 6 is positioned on the lower side of the second flap 9 in a state where the first flap 6 and the second flap 9 are laid down. When the first flap 6 and the second flap 9 are formed in this manner, the auxiliary absorber is disposed between the second flaps 9, and the operation of placing the first flaps 6 on the first flaps 6 can be easily performed. Further, lateral leakage of urine or the like is appropriately prevented by the second flaps 9.

In Fig. 8, a wide-sectional sectional view of another aspect of the absorbent article is shown. In the description of Fig. 8, the description of the portions overlapping the above description will be omitted.

In the absorbent article 1 (1C) shown in Fig. 8, the first flap 6 is formed by folding the top sheet body 3 into a corrugated shape. Further, a concave portion 13 is formed in a central portion of the absorbent body 2 in the width direction x, and the first base portion 6B of the first flap 6 is provided at a position overlapping the opening 13. In the present invention, the absorbent article can also be formed in this manner.

Next, a method of manufacturing the absorbent article of the present invention will be described. The absorbent article of the present invention is preferably produced by a method having the following procedure: a procedure of disposing a first elastic member in a center sheet to obtain a first flap (a first flap manufacturing program); and a second elastic structure The material is disposed on the side panel to obtain the second flap (the second flap manufacturing program); the first flap is joined to the central portion of the top sheet in the width direction so that the first elastic member is located wide Program for the outer side in the web direction (the first flap setting program); a program for joining the second flap to the both sides in the width direction of the top sheet body so that the second elastic member is located inside the width direction (2nd flap setting procedure); program for configuring the absorptive core on the back sheet (absorbent core configuration procedure) The procedure of the topsheet volume layer joined to the first flap and the second flap on the backsheet on which the absorbent core is disposed (assembly procedure). According to the manufacturing method of the present invention, the first flap and the second flap are joined to the top sheet body, and then laminated on the back sheet on which the absorbent core is disposed, whereby the first absorbent flap can be easily produced. Absorbent articles for flaps and 2nd flaps.

In the first flap manufacturing process, the first elastic member is placed on the center piece to obtain the first flap. When the first flap is continuously produced, the continuous body of the center sheet is successively discharged, and the first elastic member is successively discharged in the conveying direction of the center sheet and simultaneously disposed in the center sheet. In the first flap manufacturing process, it is preferable to apply the adhesive to the center sheet, and to arrange the first elastic member in the portion of the center sheet to which the adhesive is applied. Further, after the first elastic member is placed on the center sheet, the center sheet is folded back in the width direction to sandwich the first elastic member between the folded center sheets.

The first elastic member may be disposed on both sides in the width direction of the center sheet or on one side in the width direction. In the former case, two first flaps are simultaneously produced from one center piece, that is, the first flaps provided on both sides in the width direction of the absorber. In the latter case, one first flap is produced from one center piece, that is, the first flap provided on the left side or the right side in the width direction of the absorber.

In the second flap manufacturing process, the second elastic member is placed on the side panel to obtain the second flap. When the second flap is continuously produced, the side sheets are successively discharged, and the second elastic members are successively discharged in the conveying direction of the side sheets and simultaneously disposed on the side sheets. In the second flap manufacturing process, it is preferable to apply the adhesive to the side panel, and the second elastic member is disposed in the side panel and coated with the adhesive. Part of the agent. Further, after the second elastic member is placed on the side panel, the side panel is folded back in the width direction to sandwich the second elastic member between the folded side panels.

In the first flap setting program, the first flap is joined to the center portion in the width direction of the top sheet so that the first elastic member is located outward in the width direction. The central portion in the width direction of the top sheet body is defined to include a portion having a specific width of the center line in the width direction of the top sheet body. In the case where the absorbent article is continuously produced, the continuous body of the top sheet body may be successively discharged. At this time, the continuous body of the first flap may be released to be joined to the top sheet body, and the individually cut first flap and the top sheet may be joined. For example, when the first flap is provided over the entire length of the absorbent body in the front-rear direction, the first flap is joined to the top sheet by the former method, which is characterized in that it is easy to manufacture. When the first flap is joined to the top sheet body, the first flap is joined to the top sheet body such that the first elastic member is located closer to the width direction than the joint position of the first flap and the top sheet body. Just fine.

In the second flap setting program, the second flap is joined to both sides in the width direction of the top sheet so that the second elastic member is positioned inward in the width direction. Both sides of the top sheet in the width direction are defined as portions located closer to the outer side in the width direction than the central portion of the top sheet body. In the case where the absorbent article is continuously produced, the continuous body of the top sheet body may be successively discharged. At this time, it is preferable to successively release the continuous body of the second flap to be joined to the top sheet body. When the second flap is joined to the top sheet body, the second flap is joined to the top sheet body such that the second elastic member is located closer to the width direction than the joint position of the second flap and the top sheet body. Just fine.

The order of the first flap setting program and the second flap setting program is not particularly limited. The second flap setting program may be performed after the first flap setting program, and the first flap setting program may be performed after the second flap setting program. In addition, it will From the viewpoint of the ease with which the first flap and the second flap are provided on the top sheet body, it is preferable to perform the second flap setting program after the first flap setting program. That is, in the second flap setting program, it is preferable to join the second flap to the top sheet joined to the first flap. Further, by providing the first flap and the second flap to the top sheet body in this manner, the first flap is not placed on the upper side of the second flap. As a result, the erection of the second flap is not easily hindered by the first flap, and the horizontal flap of urine or the like can be appropriately prevented by the second flap.

In the absorptive core configuration program, the absorptive core is placed on the back sheet. In the case where the absorbent article is continuously produced, the continuous body of the back sheet may be successively discharged. At this time, the absorbent core may be disposed on the back sheet at a specific interval corresponding to the length of the front-rear direction of the absorber.

When the third elastic member is provided in the absorbent body, it is preferable to provide a program (third elastic member placement program) for arranging the third elastic members on both sides in the width direction of the back sheet before the absorbent core arranging step. In the case where the absorbent article is continuously produced, the continuous body of the back sheet is successively discharged, and the third elastic member is successively discharged in the conveyance direction of the back sheet and simultaneously disposed on the back sheet. In the third elastic member arranging program, it is preferable to apply the adhesive to the back sheet, and to arrange the third elastic member in the portion of the back sheet to which the adhesive is applied.

In the case where the third elastic member configuration program is provided, it is preferable to execute the absorptive core configuration program after the third elastic member configuration program. At this time, in the absorbent core disposing program, it is preferable to arrange the third elastic member in a region within 20 mm from both side ends in the wide direction of the absorbent core, and then to arrange the absorbent core on the back sheet.

The assembly process is performed after the absorption core configuration program. In the group In the loading procedure, the topsheet volume layer joined to the first flap and the second flap is on the backsheet on which the absorbent core is disposed. Then, by joining the topsheet body and the backsheet, the topsheet body and the absorbent core and the backsheet are integrally formed to obtain an absorbent body. The top sheet joined to the first flap and the second flap is laminated on the back sheet on which the absorbent core is placed, whereby the absorption of the first flap and the second flap in the absorbent body can be easily produced. Sexual items.

In the case of continuously manufacturing an absorbent article, in the assembly process, the continuous volume layer of the topsheet body joined to the first flap and the second flap is on the continuous body on the backsheet on which the absorbent core is disposed, and A continuous body of the absorber provided with the first flap and the second flap can be obtained. In this case, an individual cutting program is provided after the assembly process, and in the individual cutting program, the continuous body of the absorbent body is cut by a cutting line extending in the width direction, whereby individual settings can be obtained. There are absorbers for the first flap and the second flap. In the individual cutting procedure, the continuous body of the absorbent body may be cut between the absorbent cores arranged at predetermined intervals.

In the method for producing an absorbent article of the present invention, the absorbent body provided with the first flap and the second flap obtained in the assembly procedure or the individual cutting procedure may be directly used as the absorbent article. Further, a necessary program may be appropriately added in accordance with the type of the absorbent article to be manufactured. For example, it is also possible to provide an attachment member setting program in the assembly process or before the assembly process, which is to attach the attachment member to both sides of the top sheet in the width direction and the width direction of the back sheet. A program for the outer end of the second flap in the wide direction of the second flap or the top flap. An open type (belt type) disposable diaper can be manufactured as an absorbent article by providing an attachment member setting program. In addition, after the assembly process, a slit forming program may be provided which is provided with the absorption of the first flap and the second flap. An arc-shaped slit is formed on both sides in the width direction of the body, whereby an absorbent article that improves the wearability around the wearer's leg can be manufactured.

After the assembly process, an absorber configuration program for attaching the absorber having the first flap and the second flap to the exterior member may be provided. For example, if the exterior member can be formed into a pants shape, the absorber having the first flap and the second flap is attached to the exterior member in the absorber arrangement program, and the exterior member is formed into The pants shape, whereby a pants-type disposable diaper can be manufactured as an absorbent article.

Next, an example of a method for producing an absorbent article of the present invention will be described with reference to Figs. In the figures 9 to 12, an example of a method of continuously producing the absorbent articles shown in Figs. 1 to 3 is shown. Fig. 9 is a schematic view showing a first flap manufacturing program, Fig. 10 is a schematic view showing a second flap manufacturing program, and Fig. 11 is a schematic view showing a first flap setting program and a second flap setting program. Figure 12 shows an overview of the absorptive core configuration program and assembly procedure.

In the first flap manufacturing program 21, the first elastic member 32 is placed on the center piece 31 to obtain the first flap 33. The center sheet body 31 is successively discharged in the conveyance direction w1, and the first elastic member 32 is successively discharged in the conveyance direction w1 of the center sheet body 31, and is simultaneously disposed and fixed to the center sheet body 31. The first elastic member 32 is provided on one side in the width direction of the center sheet body 31 (the direction perpendicular to the conveyance direction w1 on the center sheet body 31), and after the first elastic member 32 is disposed on the center sheet body 31, The fabric is folded back in the width direction to sandwich the first elastic member 32. In Fig. 9, a continuum of the first flaps 33 is produced as described above.

In Fig. 10, in the second flap manufacturing program 22, the second elastic member 35 is placed on the side panel 34 to obtain the second flap 36. In the handling direction w2 land The side panel body 34 is continuously discharged, and the second elastic member 35 is successively discharged in the conveyance direction w2 of the side panel body 34, and is simultaneously fixed and fixed to the side panel body 34. The second elastic member 35 is provided on one side in the width direction of the side panel body 34 (the direction perpendicular to the conveyance direction w2 on the side panel body 34), and after the second elastic member 35 is disposed on the side panel body 34, The fabric is folded back in the width direction to sandwich the second elastic member 35. In Fig. 10, a continuum of the second flaps 36 is produced as described above.

In Fig. 11, the top sheet body 37 is successively discharged in the conveyance direction w3, and in the first flap setting program 23, the width direction of the first flap 33 and the top sheet body 37 (on the top sheet body 37) The central portion of the direction perpendicular to the conveyance direction w3 is joined such that the first elastic member is located outward in the wide direction, and then the second flap 36 and the top sheet 37 are provided in the second flap setting program 24. The both sides in the wide direction are joined such that the second elastic member is positioned inward in the wide direction, thereby producing the top sheet body 37 joined to the first flap 33 and the second flap 36. In Fig. 11, the first flaps 33 are respectively disposed on both sides of the center line in the width direction of the top sheet body 37. After the second flap setting program 24, the attachment member 38 is attached to the outer end of the second flap 36 in the width direction in the attachment member setting program 25 to obtain the composite sheet 39.

In Fig. 12, the back sheet 40 is successively fed in the conveyance direction w4, and in the third elastic member placement program 26, in the width direction of the back sheet 40 (the direction perpendicular to the conveyance direction w4 on the back sheet 40) The third elastic member 41 is disposed on both sides. The third elastic members 41 are successively discharged in the conveyance direction w4 of the back sheet 40 and are disposed and fixed to the back sheet 40 at the same time.

Next, in the absorptive core configuration program 27, the absorptive core 42 is disposed on the back sheet 40. The absorbent core 42 is in accordance with the predetermined direction in the transport direction w4 The spacers are disposed on the back sheet 40. Further, the absorbent core 42 is disposed on the back sheet 40 such that the third elastic member 41 is disposed in a region within 20 mm of both sides of the wide direction in the center portion of the absorbent core 40 in the front-rear direction.

Next, in the assembly program 28, the composite sheet 39 formed by bonding the first flap and the second flap to the top sheet body is laminated on the back sheet 40 on which the absorbent core 42 is disposed. Thereby, the continuous body 43 which provided the absorber of the 1st flap and 2nd flap was obtained. This is cut in the individual cutting program 29, whereby the absorbent article 44 provided with the first flap and the second flap is obtained. The absorbent article 44 can be used as an open type (belt type) disposable diaper.

The present application claims the benefit of priority based on Japanese Patent Application No. 2012-286134, filed on Dec. 27, 2012. The entire contents of the specification of Japanese Patent Application No. 2012-286134, filed on Dec. 27, 2012, are incorporated herein by reference.

1, 1A‧‧‧absorbent articles

2‧‧‧ absorber

3‧‧‧Top sheet

4‧‧‧ Back film

5‧‧‧Absorbent core

6‧‧‧1st flap

6B‧‧‧1st base

6F‧‧‧1st free end

7‧‧‧1st elastic member

9‧‧‧2nd flap

9B‧‧‧2nd base

9F‧‧‧2nd free end

10‧‧‧2nd elastic member

11‧‧‧ side sheet

14‧‧‧3rd elastic member

Claims (21)

An absorbent article comprising: an absorbent body having a front-back direction and a wide direction, having a top sheet body and a back sheet, and an absorbent core disposed therebetween; the first flap disposed on the muscle side of the absorber And extending in the front-rear direction; and the second flap is disposed on the muscle side of the absorber and extending in the front-rear direction; wherein the first flaps are respectively disposed on two sides of the center line of the wide direction of the absorber, a first elastic member extending in the front-rear direction is formed to be inclined outward in the width direction; and the second flaps are respectively disposed outside the width direction of the first flap, and are provided before and after a second elastic member extending in a direction; the absorbent core forming an opening at a central portion in the width direction thereof, or forming a mass per unit area of the left side portion and the right side portion on both sides in a central portion in the width direction thereof a small recess; the first base portion of the first flap as a starting point rising from the absorber is disposed at a position overlapping the opening or the recess; and the auxiliary absorber is placed on the first flap and is the second The inside of the flap is used in the wide direction. The absorbent article according to claim 1, wherein the first flap has an outer surface of the end portion in the front-rear direction joined to the absorbent body. The absorbent article according to claim 2, wherein the second flap has an inner side surface of the end portion in the front-rear direction joined to the absorbent body and is formed to be poured inward in the width direction. The absorbent article of claim 3, the first flap and the first flap The second flap is formed such that the first flap is located on the lower side of the second flap in a state of lodging. The absorbent article according to any one of claims 1 to 4, wherein the absorbent body is provided in a region extending within 20 mm from both side ends of the absorbent core in the width direction. The third elastic member. The absorbent article according to claim 5, wherein the third elastic member is disposed outside and inside the both ends of the absorbent core in the width direction. The absorbent article according to any one of claims 1 to 4, wherein the first flap has a first free end as a tip end rising from the absorber; and the first flap is formed from the first base The length to the first free end is longer than the length from the first base to the center line in the width direction of the absorbent body. The absorbent article according to any one of claims 1 to 4, wherein the opening or the recess is provided on a front side of the absorbent body. The absorbent article according to any one of claims 1 to 4, wherein when the front side end is 0% and the rear side end is 100% as the relative position of the absorbent body in the front-rear direction, the opening or the The rear end of the recess is located in a region of 75% or less of the front-rear direction of the absorber. The absorbent article according to any one of claims 1 to 4, wherein the opening is formed to extend through the entire length of the absorbent core in the front-rear direction, and the absorbent core is divided in the width direction. The absorbent article according to any one of claims 1 to 4, wherein the concave portion is formed to extend through the entire length of the absorbent core in the front-rear direction. The absorbent article according to any one of claims 1 to 4, wherein The first flap is disposed on the front side of the absorber. The absorbent article according to any one of claims 1 to 4, wherein the first side is 0% and the rear side is 100% as the relative position of the absorbent body in the front-rear direction. The rear end of the wing is located in a region of 75% or less of the front-rear direction of the absorbent body. The absorbent article according to claim 8, wherein the first flap is disposed on a front side of the absorbent body. The absorbent article according to claim 14, wherein when the front side end is 0% and the rear side end is 100% as the relative position of the absorbent body in the front-rear direction, the rear side end of the first flap is located. A region of the absorbent body that is 75% or less in the front-rear direction. The absorbent article according to any one of claims 1 to 4, wherein the first flap is formed to extend the entire length of the absorbent body in the front-rear direction. The absorbent article according to any one of claims 1 to 4, wherein the first flap is composed of a central sheet of another member different from the absorbent body, the central sheet having: a first fixing portion that is joined to the absorber, and a first rising portion that extends from the first fixing portion to form the first flap. The absorbent article according to claim 17, wherein the central sheet body is composed of a left central sheet body disposed on a left side of the absorbent body and a right central sheet body disposed on a right side of the absorbent body; The first flap on the left side in the width direction of the body is formed by the left center sheet, and the first flap provided on the right side in the width direction of the absorber is formed by the right center sheet. An absorbent article according to claim 17, which is provided in the absorbent body The first flap on the left and right sides is composed of a central piece. The absorbent article according to any one of claims 1 to 4, wherein the first flap is formed by folding the top sheet into a corrugated shape. The absorbent article according to any one of claims 1 to 4, wherein the absorbent core has a mass per unit area of from 60 g/m ² to 450 g/m ² .