JP2008125727A - Absorbent article and its manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an absorbent article having a prescribed strength and superior wearing property and operability and having winged flap parts. <P>SOLUTION: This sanitary napkin 1 is provided with a substantially vertically long absorbent body 10 having a liquid-retaining absorptive layer 11 and a liquid-impermeable leakage-preventing layer 12, and a pair of winged flap parts 6 and 6 extending from the both side edges 10a in the longitudinal direction in the absorbent body 10; each of the pair of winged flap parts 6 and 6 is formed to have a layer structure in the thickness direction from nonwoven fabric, and has a central part M as a part having the number of nonwoven fabric layers more than that of a base part 62 in an outward position of the base part 62 in the width direction in the absorbent body 10; and the central part M and a flap adhesion part 61 formed in a skin non-contact face side are stacked on each other. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an absorbent article, and more particularly, to an absorbent article such as a sanitary napkin with a wing-shaped flap, and a method for producing the same.

Conventionally, sanitary napkins provided with wing-shaped flap portions are widely known. This type of sanitary napkin is formed of an absorbent main body and a pair of wing-shaped flap portions provided at both side edges in the longitudinal direction.
In this type of sanitary napkin, the wing-shaped flap portion is provided with a flap adhesive portion on one side, and is used at the edge of the crotch in underwear such as shorts (hereinafter also simply referred to as shorts) when the napkin is used. And is fixed to the outer surface of the undergarment via the flap adhesive portion.

For example, a sanitary napkin in which a side leak-proof portion and a wing-shaped flap portion are formed from a single nonwoven fabric is known (Patent Document 1).
In Patent Document 1, an absorber is interposed between a liquid-permeable top sheet and a liquid-impervious back sheet, and one or more wings projecting laterally for fixing to underwear on both sides. A flap portion is formed, and the liquid-impermeable back sheet has a sheet end at a position slightly beyond the side edge of the absorbent body on both sides of the absorbent article, and the surface of the absorbent article is on the both sides of the absorbent article in the longitudinal direction. A side woven flap is formed by providing a side non-woven fabric along the entire length of the absorbent article and extending a part of the side non-woven fabric to the side, and the non-skin of the wing-shaped flap portion. An absorbent article is disclosed in which a flap adhesive portion is formed on the contact surface side. According to the absorbent article described in Patent Document 1, there is no discomfort due to the presence of the wing-shaped flap, and the feel and breathability are improved. In the case where the side nonwoven fabric is formed of an elastic nonwoven fabric, even if the side nonwoven fabric is fixed to the underwear by the wing-shaped flap portion, it can sufficiently follow the movement of the body.

  Patent Document 2 discloses an absorbent main body composed of a liquid-permeable surface sheet, an impermeable back sheet, and a liquid-absorbent absorbent body interposed between the two sheets, and both longitudinal edges of the absorbent main body. It has a pair of extending wing-shaped flaps, has a flap adhesive part on the non-skin contact surface side of the wing-shaped flap, and the wing-shaped flap is from the side edge of the absorbent main body. A sanitary napkin formed from an extended back sheet, an upper sheet, and a reinforcing layer interposed between both sheets is disclosed. According to the sanitary napkin described in Patent Document 2, it is possible to prevent the wing-shaped flap portions from being twisted due to the low rigidity of the wing-shaped flap portions, and to prevent the flap adhesive portions from adhering to each other.

JP 2002-272786 A Japanese Utility Model Publication No. 5-65319

In the absorbent article described in Patent Document 1, since the wing-shaped flap portion is formed from a single nonwoven fabric, the wing-shaped flap portion is detached from the underwear such as shorts fixed through the flap adhesive portion. When doing so, the wing-shaped flap may be broken.
Further, in the sanitary napkin described in Patent Document 2, the surface on the non-skin contact surface side of the wing-shaped flap portion is formed from an impermeable back sheet, and the back sheet is formed from a resin film. In some cases, the wearing feeling and operability may be inferior.

  Accordingly, an object of the present invention is to provide an absorbent article having a predetermined strength and having a wing-shaped flap portion excellent in wearing feeling and operability, and a method for manufacturing the same.

  The present invention includes an absorbent article having a substantially vertically long absorbent main body having an absorbent layer and a leak-proof layer, and having a pair of wing-shaped flap portions extending from both side edges in the longitudinal direction of the absorbent main body. Each of the pair of wing-shaped flap portions is formed so as to have a layer structure in the thickness direction from the nonwoven fabric, and is located more outward than the base portion in the width direction in the absorbent main body than the base portion. Achieving the above object by providing an absorbent article having a non-woven fabric having a large number of layers, and the overlapping part of the non-skin contact surface with the flap adhesive part. It is.

  Further, the present invention is a method for manufacturing the absorbent article described above, from the raw fabric of the long nonwoven fabric wound in a roll shape, the unwinding step of unwinding the nonwoven fabric continuous body, Each of both sides in the longitudinal direction of the nonwoven fabric continuous body is folded back in the width direction so that the both side portions overlap each other, and the folded nonwoven fabric continuous body is overlapped on both sides. An embossing step of forming a long member by forming a large number of embossed portions with a predetermined width in a portion excluding both side portions of the folded nonwoven fabric so as to include a portion that is folded, and the long shape An application step of continuously applying an adhesive to the portion of the one surface of the member overlapping the both side portions, and the elongate member applied with the adhesive in the width direction and The embossed part First cutting to produce a pair of side leakage preventing part continuous members in which wing-like flap part forming parts are intermittently formed by cutting in the longitudinal direction so as to swing within the predetermined width formed A wing-shaped flap portion forming portion on the skin contact surface side in the longitudinal direction on the skin contact surface side in a separate absorbent main body continuum produced separately from the step and the pair of side leakage preventing portion continuous members. An absorbent article continuum is produced by joining to the absorbent main body continuity so as to extend from both side edges in the longitudinal direction and the applied adhesive faces the non-skin contact surface side. The object is achieved by providing a method for manufacturing an absorbent article comprising a joining step and a second cutting step of cutting the absorbent article continuum into individual absorbent articles.

  According to the absorbent article having the wing-shaped flap portion of the present invention, the wing-shaped flap portion has a predetermined strength and is excellent in wearing feeling and operability.

  Hereinafter, the absorbent article of the present invention will be described based on preferred embodiments with reference to the drawings.

The absorbent article 1 of 1st Embodiment is a sanitary napkin (henceforth only napkin), and as shown in FIGS. 1-3, the liquid holding | maintenance absorption layer 11 and the liquid impervious leak-proof layer 12 has a substantially vertically long absorbent main body 10 having a pair of wing-shaped flap portions 6, 6 extending from both side edges 10 a in the longitudinal direction of the absorbent main body 10. The absorbent layer 11 of the napkin 1 is composed of a liquid-permeable top sheet 2 and a liquid-retaining absorbent body 4, and the leak-proof layer 12 is composed of a back sheet 3 having air permeability and liquid impermeability.
Moreover, in the napkin 1 of this embodiment, each of a pair of wing-shaped flap parts 6 and 6 is formed so that it may have a layer structure in the thickness direction from a nonwoven fabric, and the width direction in the absorptive main body 10 rather than the base 62 The center part M as a part having more layers of the nonwoven fabric than the base part 62 is provided at the outer side of the base part 62, and the flap part 61 is formed on the center part M and the non-skin contact surface side. Are overlapped (a flap adhesive portion 61 is formed on the non-skin contact surface side of the central portion M).

The napkin 1 of the present embodiment will be further described below.
As for the napkin 1, the longitudinal direction is the front part A, the excretion part opposing part B (part which has the excretion part opposing area | region arrange | positioned facing a wearer's liquid excretion part in the center in the width direction) and back part It is divided into C.

  The napkin 1 of this embodiment is vertically long, and the longitudinal direction thereof coincides with the longitudinal direction of the absorbent main body 10 (hereinafter also referred to as the main body longitudinal direction). Each of the top sheet 2 and the back sheet 3 is vertically long, and the longitudinal direction thereof coincides with the longitudinal direction of the main body. The absorber 4 is vertically long, and its longitudinal direction coincides with the longitudinal direction of the main body, and is sandwiched and fixed between the top sheet 2 and the back sheet 3. The width of the top sheet 2 is substantially the same as the width of the absorber 4 and is formed narrower than the width of the back sheet 3. The top sheet 2 covers the entire surface of the absorbent body 4 on the skin contact surface side. Each of the top sheet 2 and the back sheet 3 extends from both ends of the absorbent body 4 in the longitudinal direction, and is joined to each other by a known joining method such as heat sealing or adhesion using an adhesive.

  In addition, in this specification, a skin contact surface is a surface turned to a wearer's skin side at the time of wear among both surfaces of the absorptive article extended in flat shape, and a non-skin contact surface is flat. Of the expanded absorbent article, the surface is directed to the underwear side (the side opposite to the wearer's skin side) such as shorts when worn. The skin contact surface includes the surface of the absorbent main body 10 on the surface sheet 2 side and the surface of the wing-shaped flap 6 on the surface sheet 2 side, and the non-skin contact surface includes the back sheet of the absorbent main body 10. 3 side and the surface of the wing-shaped flap part 6 on the back sheet 3 side (formation surface of the flap adhesive part 61) are included.

  Further, as shown in FIG. 1, the napkin 1 has a pair of side leakage preventing portions 5, 5, and the skin contact surface side of the absorbent main body 10 by the pair of side leakage preventing portions 5, 5. Both side portions in the longitudinal direction are covered, and each of the pair of side leakage preventing portions 5 and 5 and each of the pair of wing-shaped flap portions 6 and 6 are integrally formed.

Next, the pair of wing-shaped flap portions 6 and 6 will be further described below.
A pair of wing-shaped flap parts 6 and 6 of this embodiment are provided in the excretion part opposing part B of the napkin 1. Each of the pair of wing-shaped flap portions 6 and 6 is vertically long, and the longitudinal direction thereof coincides with the longitudinal direction of the main body.

  Each of the pair of wing-shaped flap portions 6 and 6 has a central portion M in the width direction (hereinafter also referred to as a main body width direction) in the absorbent main body 10 formed of a three-layer nonwoven fabric. An inward portion I located inward in the main body width direction is formed from two layers of nonwoven fabric. Moreover, in this embodiment, the outer part O located in the outer side of this main body width direction from this center part M is formed from the nonwoven fabric of 2 layers. Thus, the wing-shaped flap part 6 has a layer structure in which the number of layers of the nonwoven fabric forming the wing-shaped flap part 6 differs depending on the position in the main body width direction. An inward portion I of the wing-shaped flap portion 6 is a base portion 62 in the wing-shaped flap portion 6. Moreover, the center part M of the wing-shaped flap part 6 is an area | region of the predetermined width centering on the center of the width direction of this wing-shaped flap part 6 literally.

In this embodiment, the wing-shaped flap part 6 is formed from the two wing-shaped flap part formation sheets 6A and 6B which consist of a nonwoven fabric, as shown in FIG.
The wing-shaped flap portion forming sheet 6A extends from the outer edge of the wing-shaped flap portion 6 in the body width direction toward the inside of the body width direction, and the non-skin contact surface of the wing-shaped flap portion 6 A side surface is formed. Further, the wing-shaped flap portion forming sheet 6A extends from the side edge portion 10a in the longitudinal direction of the absorbent main body 10 toward the inner side in the body width direction so as to cover the skin contact surface side of the absorbent main body 10. In the longitudinal direction side of the absorbent main body, facing the skin contact surface side and outward in the main body width direction so as to have a folded end portion 51 inward in the width direction of the absorbent main body 10 After being folded, it extends outward in the width direction of the main body. Further, the wing-shaped flap portion forming sheet 6 </ b> A extends from the longitudinal side edge portion 10 a of the absorbent main body 10 and extends to the central portion M of the wing-shaped flap portion 6. The surface of the skin contact surface side of the part I and the center part M is formed.

  As shown in FIG. 2, the wing-shaped flap portion forming sheet 6B extends from the outer edge in the body width direction of the wing-shaped flap portion 6 to the central portion M of the wing-shaped flap portion 6, The surface of the sheet 6B on the non-skin contact surface side and a part of the surface on the skin contact surface side are covered with the folded wing-shaped flap portion forming sheet 6A.

  As described above, each of the pair of wing-shaped flap portions 6 and 6 according to the present embodiment has a layer structure in the thickness direction. That is, the inward portion I is formed of two layers of opposing nonwoven fabrics of the wing-shaped flap portion forming sheet 6A, and the central portion M is a two-layered portion of opposing portions of the wing-shaped flap portion forming sheet 6A. And a single layer composed of the wing-shaped flap portion forming sheet 6B interposed between the two layers, and the outer portion O is composed of one layer composed of the wing-shaped flap portion forming sheet 6A and the wing-shaped flap portion. It is formed of two layers in which one layer made of the forming sheet 6B is laminated.

  In the present embodiment, each of the pair of wing-shaped flap portions 6, 6 is formed with a large number of embossed portions 63, 63... Has been. In the central part M, the wing-shaped flap part forming sheets 6A opposed to each other and the wing-shaped flap part forming sheet 6B interposed between the sheets are formed. In the outer part O, the wing-shaped flap part forming sheet 6A and the wing-shaped sheet are formed. The flap portion forming sheet 6B is joined to each other.

  Further, a wing-shaped flap portion 6 that is bent along the edge of the shorts crotch portion is fixed to the outer surface of the shorts on the non-skin contact surface side surface of each of the pair of wing-shaped flap portions 6, 6. The flap adhesion part 61 for this is provided. The flap adhesion part 6 is formed in the center part M of the wing-shaped flap part 6, as shown in FIG. The flap adhesive portion 61 is formed by applying an adhesive to the non-skin contact surface side surface of the wing-shaped flap portion 6. Before the napkin 1 is used, the protective sheet is adhered to the flap adhesive portion 61 so as to be peeled off.

The dimension of the wing-shaped flap portion 6 is preferably designed as appropriate according to the size and application of the napkin 1, but generally, the dimension of the wing-shaped flap portion of the sanitary napkin is the length in the longitudinal direction of the main body. It is preferably 30 to 100 mm, and the length in the body width direction is preferably 20 to 40 mm.
And it is preferable that the length of the center part M of the center part M of the wing-shaped flap part 6 is 2-30 mm, and it is 5-20 mm especially that the center part M has rigidity, and a flap adhesion part When the wing-shaped flap portion 6 is removed from the underwear such as shorts fixed through 61, the central portion M preferably has a predetermined strength enough to prevent the wing-shaped flap portion 6 from being broken.
Further, the length of the inner portion I in the width direction of the main body is preferably 5 to 30 mm, and particularly preferably 10 to 20 mm when the wing-shaped flap portion 6 is bent at the base portion 62 and fixed to shorts or the like. From the viewpoint of operability.
Here, the length in the main body width direction of the wing-shaped flap portion 6 and each part thereof is a value in which the length in the main body width direction in the excretory portion facing portion B of the absorbent main body 10 is the largest.

  As a nonwoven fabric for forming the wing-shaped flap portion forming sheets 6A and 6B for forming the wing-shaped flap portion 6, a conventionally known nonwoven fabric can be used without particular limitation. For example, various nonwoven fabrics such as an air-through nonwoven fabric, a spunbond nonwoven fabric, a meltblown nonwoven fabric, a spunlace nonwoven fabric, and a needle punch nonwoven fabric obtained by subjecting a heat-bonded fiber web manufactured by the card method to hot air can be used. There is no restriction | limiting in particular in the coupling | bonding means of the fiber in these nonwoven fabrics, For example, the coupling | bonding by a binder and the coupling | bonding by heat sealing | fusion can be used. Further, instead of fiber bonding, mechanical entanglement of fibers such as spunlace nonwoven fabric may be used. In order to realize a smooth touch and softness in the wing-shaped flap 6 and the side leak-proof part 5, the hot-melt fiber web obtained by the card method is treated with hot air as a non-woven fabric. An air-through nonwoven fabric that is made into a nonwoven fabric without compression is most preferably used.

Moreover, it is preferable that the wing-shaped flap part formation sheet 6A, 6B has a stretching property from the viewpoint of forming the side leak-proof part 5 with the wing-shaped flap part 6, and has water repellency. It is preferable.
The basis weight of the nonwoven fabric forming the wing-shaped flap portion forming sheet 6A is 10 to 80 g / m ² , particularly 20 to 50 g / m ² , and the base portion 62 of the wing-shaped flap portion 6 has flexibility, It is preferable for improving the operability of the wing-shaped flap portion 6 and giving the wing-shaped flap portion 6 and the side leak-proof portion 5 a predetermined strength and a good wearing feeling.
The basis weight of the nonwoven fabric forming the wing-shaped flap portion forming sheet 6B is 10 to 80 g / m ² , particularly 20 to 50 g / m ² , so that the wing-shaped flap portion 6 has a predetermined strength and good wearing feeling. It is preferable in giving.
For example, in order to ensure the predetermined strength at the center portion M while ensuring flexibility in the vicinity of the base portion 62 of the wing-shaped flap portion 6, the basis weight of the nonwoven fabric forming the wing-shaped flap portion forming sheet 6A is set to It is preferable to make it smaller than the shape flap portion forming sheet 6B.

Next, the pair of side leakage preventing portions 5 and 5 will be further described below.
As shown in FIG. 1, each of the pair of side leakage preventing portions 5, 5 of the napkin 1 of the present embodiment is formed in a vertically long shape, and the longitudinal direction thereof coincides with the longitudinal direction of the main body. Each of the pair of side leakage preventing portions 5 and 5 has substantially the same width, and is disposed between both end portions in the longitudinal direction of the main body.

In this embodiment, the side leak-proof part 5 is formed from the wing-shaped flap part formation sheet 6A. As shown in FIG. 2, the wing-shaped flap portion forming sheet 6 </ b> A is joined to the back sheet 3 by the seal portion 8 at the side edge portion 10 a of the absorbent main body 10. The side leak-proof portion 5 has a wing-shaped flap portion forming sheet 6A extending from the side edge portion 10a of the absorbent main body 10 toward the inner side in the width direction of the absorbent main body 10 and having a folded end portion 51. After the wing-shaped flap portion forming sheet 6A is folded outward in the main body width direction, the wing-shaped flap portion forming sheet 6A extends toward the outer side in the main body width direction as it is, and is joined to the back sheet 3 at the seal portion 8 again. The seal portion 8 can be formed by a known joining means such as heat sealing or adhesion with an adhesive.
In the excretion part facing part B, both side edges in the longitudinal direction of the back sheet 3 slightly extend outward in the body width direction from the seal part 8 as shown in FIG. In order to improve the flexibility and operability of the wing-shaped flap portion 6, it is preferable that the extended portion of the back sheet 3 is not joined to the wing-shaped flap portion 6.

  As described above, each of the pair of side leakage preventing portions 5 and 5 and the wing-shaped flap portion 6 on the same side in the longitudinal direction of the main body are integrally formed from one wing-shaped flap portion forming sheet 6A. ing. The wing-shaped flap portion forming sheet 6 </ b> A is divided into a side leak-proof portion 5 and a wing-shaped flap portion 6 with the seal portion 8 as a boundary. The shape of the seal portion 8 is shown in FIG. 1 so that when the continuous wing-shaped flap portion 6 is bent along the edge of the shorts crotch, it easily fits with the edge of the shorts crotch. As shown, it has a shape constricted inward in the body width direction at the center in the longitudinal direction.

  In the present embodiment, as described above, each of the pair of side leakage preventing portions 5 and 5 is formed from a wing-shaped flap portion forming sheet 6A that is a non-woven fabric forming the wing-shaped flap portion 6, as shown in FIG. ing. Since this wing-shaped flap part formation sheet 6A has the basic weight of the range mentioned above, the inner surfaces of the folding | turning edge part 51 are spaced apart at least partially. Therefore, the side leak-proof part 5 has favorable cushioning properties.

  Moreover, in this embodiment, as shown in FIG.1 and FIG.3, each of a pair of side leak-proof part 5 and 5 makes the 1st joining line 52 which makes a concave shape toward the width direction inner side of the absorptive main body 10. As shown in FIG. , And the first joint line 52 is joined to the absorbent main body 10 by a second joint line 53 that is positioned before and after the longitudinal direction of the absorbent main body 10 and extends so as to intersect the longitudinal direction. A pocket 52c that is opened when worn is formed between the first joint line 52 and the folded end 51 in each of the leakage preventing parts 5 and 5, and the second joint line 53 is a portion 53a close to the folded end 51. And portions 53b far from the folded end portion 51 alternately, and the distance L2 between the portions 53a close to the adjacent folded end portions 51 is longer than the length L1 of the first joining line 52 in the longitudinal direction. short.

The first joint line 52 of the side leakage preventing part 5 will be further described. The first joint line 52 is provided in the excretory part facing part B of the napkin 1 as shown in FIG.
As shown in FIG. 1, the pair of side leakage preventing parts 5, 5 are joined to the absorbent main body 10 by first joining lines 52. The first joining line 52 is continuous in the longitudinal direction of the absorbent main body 10.

  As shown in FIG. 3, the first joint line 52 extends in the longitudinal direction in an arc shape, and has portions 52 a and 52 a close to the folded end portion 51 and a portion 52 b far from the folded end portion 51. The length L1 in the longitudinal direction of the first joint line 52 (see FIG. 3), the separation distance W1 between the portion 52a near the folded end 51 and the portion 52b far from the folded end 51 of the first joint line 52 (see FIG. 3). Hereinafter, it is also preferable that the relationship of L1> W1 is satisfied. L1 has a length of 10 to 50% with respect to the length of the napkin 1 in the main body longitudinal direction, and W1 has a width of 3 to 30% with respect to the length of the napkin 1 in the main body width direction. preferable. The length in the main body width direction of the napkin 1 here refers to a value in which the length in the main body width direction of the excretory part facing portion B of the absorbent main body 10 is the largest. Further, the terms “near” and “far” as used herein have a relative meaning that they are nearer than a far part and farther than a close part.

  Moreover, it is preferable that a 1st and 2nd joining line is one joining line substantially continuous as a whole. That is, the first joint line and the second joint line are substantially continuous joint lines, and the first joint line and the second joint line are also substantially continuous. preferable. The term “substantially continuous” means that, in addition to the continuous bonding line as in the present embodiment, a plurality of bonding portions that do not overlap with the straight line when an arbitrary straight line parallel to the width direction of the absorbent article is assumed. It is intended to include those that are arranged continuously so that there is no such thing, and those that consist of many joints that are discontinuous when viewed microscopically but that form linear joints when viewed as a whole In addition, a joining line formed by arranging a number of joining portions in the longitudinal direction of the napkin 1 so as to overlap each other is also included.

  The length L1 (see FIG. 3) of the first joint line 52 provided in the excretory part facing part B is substantially the same as the length of the base part 62 of the wing-shaped flap part 6, as shown in FIG.

As shown in FIG. 2, the first joining line 52 in the present embodiment joins a part of the portion of the side leakage preventing portion 5 located near the center in the body width direction to the topsheet 2 by heat embossing. Is formed.
The first joint line 52 is formed by bonding the side leak-proof portion 5 only to the top sheet 2 as in the present embodiment, or the side leak-proof portion 5 is fixed to the absorber 4 together with the top sheet 2. However, when the groove | channel is not formed in the said 1st junction line equivalent part of this absorber 4, an absorbent article becomes still softer and it is preferable at the point which the fit property to a body improves.

  The first joint line 52 may be formed by pressing the side leak-proof portion 5 together with the top sheet 2 and the absorbent body 4. In this case, there is an advantage that liquid bleeding and diffusion are suppressed by the groove formed in the first joint line 52 portion.

  A portion 52d (see FIG. 3) between the folded end portion 51 and the first joining line 52 in each of the pair of side leakage preventing portions 5 and 5 is not joined to the topsheet 2, and the portion 52d and the topsheet 2 A pocket 52c (see FIG. 2; hereinafter also referred to as a large pocket) is formed. The pocket 52c is opened at least when worn, and the body fluid that has moved in the width direction of the body of the napkin 1 is captured in the opened pocket 52c. Therefore, leakage prevention can be improved. Moreover, since it can be easily understood that the leak-proof property in the width direction of the main body is high, it is preferable from the viewpoint of giving the wearer a sense of security.

Furthermore, since at least a part of the first joining line 52 overlaps with the absorber 4 in a plan view, the liquid captured by the pocket 52c is smoothly absorbed by the absorber, and the leak-proof property is further improved. preferable. The liquid caught in the pocket 52c is absorbed by the absorber 4 while moving from the front of the pocket 52c to the back, or is absorbed by the absorber 4 after reaching the back of the pocket 52c.
That it overlaps with the absorber 4 in a plan view means that the whole or part of the first joint line 52 exists in the region where the absorber 4 is disposed. The first joining line 52 preferably has a part of the swinging width W1 overlapping the absorber 4, and more preferably the entire swinging width W1 overlaps the absorber 4. In the present embodiment, the first joining line 52 has the entire swinging width W1 overlapping the absorber 4 over the entire length thereof.

In the napkin 1 of the present embodiment, as shown in FIG. 1, a second joint line 53 is connected and provided before and after the first joint line 52. The second joint line 53 is formed in the side leakage preventing part 5 of the front part A and the rear part C.
As shown in FIG. 2, the pair of side leakage preventing parts 5, 5 are joined to the absorbent main body 10 by a second joining line 53. The second joining line 53 is continuous in the longitudinal direction of the absorbent main body 10.

As shown in FIG. 3, the second joining line 53 meanders so as to alternately have portions 53 a close to the folded end portion 51 and portions 53 b far from the folded end portion 51, and more specifically, It has a zigzag shape along the direction. Between the portion 53a close to the folded end portion 51 and the portion 53b far from the folded end portion 51, the joining line forming the second joining line 53 extends and is connected so as to intersect the longitudinal direction.
More specifically, the second joining line 53 has a shape in which arc-shaped portions convex toward the center side in the body width direction and arc-shaped portions concave toward the center side in the body width direction are alternately connected. There is no portion parallel to the longitudinal direction.

In the second joint line 53, the distance L2 between the portions close to the adjacent folded end portions 51 is shorter than the length L1 in the longitudinal direction of the first joint line 52, as shown in FIG. The distance L <b> 2 is a length obtained by measuring the distance between the points closest to the respective folded end portions 51 in the portions 53 a close to the adjacent folded end portions 51 along the longitudinal direction of the main body.
Further, a separation distance W3 (refer to FIG. 3, hereinafter also referred to as a swinging width) between the portion 53a near the folded end portion 51 and the portion 53b far from the folded end portion 51 of the second joining line 53 is the first by heat embossing. It is preferably longer than the seal width W2 of the joining line 52 (see FIG. 3). The first joint line 52 has a predetermined width, and both side edges of the first joint line 52 can be regarded as two parallel straight lines microscopically. Therefore, the seal width W2 is between the two parallel straight lines. The distance.

  A portion 53d (see FIG. 3) between the second joining line 53 and the folded end portion 51 in each of the pair of side leakage preventing portions 5 and 5 is not joined, and the portion 53d and the top sheet 2 are not joined. Has a pocket 53c (hereinafter also referred to as a small pocket). The pocket 53c is preferably opened.

  Similarly to the first joint line 52, the second joint line 53 in the present embodiment joins a part of the portion located near the center of the side leakage preventing part 5 in the body width direction to the topsheet 2 by heat embossing. Is formed. In addition, the description of the first bonding line 52 described above is appropriately applied to the bonding between the second bonding line 53 and the absorbent main body 10.

  Furthermore, since at least a part of the second bonding line 53 overlaps the absorber 4 in plan view, the liquid captured by the pocket 53c is smoothly absorbed by the absorber, and the leak-proof property is further improved. preferable. In the present embodiment, the entire width of the second joining line 53 overlaps the absorber 4 over the entire length thereof. In addition, for the overlap between the second joint line 53 and the absorbent main body 10, the description of the first joint line 52 described above is appropriately applied.

In each of the pair of side leakage preventing portions 5, 5, it is sufficient that one small pocket 53 c formed by the second joining line 53 is formed before and after the large pocket 52 c, and a plurality of small pockets 53 c are preferably formed. .
The region of the small pocket 53c formed by the second bonding line is preferably 10% or more in the front-rear direction with respect to the length L1 of the first bonding line. The length of the pocket 53c in the longitudinal direction is preferably 4% or more with respect to L1.

The length L1 in the main body longitudinal direction of the first joint line 52 in the napkin 1 of the present embodiment is preferably 40 to 100 mm, and the length in the main body longitudinal direction of the second joint line 53 (region where meandering is repeated). Is preferably 4 to 50 mm, and L1 is preferably longer.
Moreover, it is preferable that the said distance L2 in the 2nd joining line 53 is 4-30 mm. L2 / L1 is preferably 4 to 75%.
Further, the swing width W1 of the first joint line 52 is preferably 2 to 15 mm, and the swing width W3 of the second joint line 53 is preferably 2 to 15 mm. W1 is preferably the same as W3 or larger than W3.

The napkin 1 of this embodiment is further demonstrated.
As shown in FIG. 1, a groove 7 is provided on the skin contact surface side of the absorbent main body 10 in the napkin 1. The groove 7 is formed of a pair of embossed grooves extending in the longitudinal direction of the main body and double arc-shaped embossed grooves extending in the width direction of the main body at both ends in the longitudinal direction of the embossed groove. In addition, the pair of embossed grooves extending in the longitudinal direction of the main body has a shape confined inside. The top sheet 2 and the absorber 4 are joined by the groove 7.
The folded end portion 51 of the side leakage preventing portion 5 is located just outside the groove 7 as shown in FIG.

  Moreover, the napkin 1 of this embodiment is interposed between the surface sheet 2 and the absorber 4, and the polymer sheet 41 is arranged. As the polymer sheet 41, fluff pulp and a sheet formed by mixing a superabsorbent polymer into a fiber and the like are used, and as a sheet formed by mixing a superabsorbent polymer into a sheet, a superabsorbent is used. Any of those in which the conductive polymer is dispersed in a layered manner or in a three-dimensional manner can be used.

  The other forming materials constituting the napkin 1 of the present embodiment will be described. The forming material for the top sheet 2, the back sheet 3, the adhesive, the absorbent body 4 or the polymer sheet 41 is an absorbent article such as a sanitary napkin. Various materials conventionally used can be used without any particular limitation.

According to the sanitary napkin 1 of this embodiment described above, the vicinity of the base portion 62 of the wing-shaped flap portion 6 is flexible, excellent in operability, and the central portion M where the flap adhesive portion 61 is formed is: The wing-shaped flap portion 6 is prevented from being broken when the wing-shaped flap portion 6 is detached from underwear such as shorts that has rigidity and a predetermined strength and is fixed via the flap adhesive portion 61. Has been.
Moreover, since it has the 1st joining line 52 which forms the big pocket 52c in the excretion part opposing part B which is easy to produce a twist at the time of wear, and has the 2nd joining lines 53 and 53 before and behind that, it twists to the napkin 1 Even if this occurs, the small pocket 53c formed by the second bonding line 53 is deformed and the torsion of the napkin 1 is absorbed. Therefore, the large pocket 52c in the excretory part opposing part B can catch the bodily fluid which moved to the width direction, without being crushed by twist. Further, the napkin 1 is likely to be twisted at the hip portion when worn, but the rear portion C also has the second joining line 53, so that the leak-proof property is further enhanced.

  Next, a sanitary napkin according to a second embodiment of the present invention will be described below with reference to FIGS. Regarding the second embodiment, the description in detail regarding the above-described embodiment is applied as appropriate to points that are not particularly described. Moreover, in FIG.4 and FIG.5, the same code | symbol is attached | subjected to the same member as FIGS. 1-3.

As shown in FIGS. 4 and 5, the sanitary napkin 1 according to the second preferred embodiment of the present invention has a wing-shaped flap portion 6 formed of a member different from the side leak-proof portion 5.
The wing-shaped flap part 6 is formed from two wing-shaped flap part forming sheets 6C and 6D made of a nonwoven fabric. As shown in FIG. 5, the wing-shaped flap portion forming sheet 6 </ b> C extends from the center portion M of the wing-shaped flap portion 6 toward the outside in the width direction of the main body, and is in contact with the center portion M and the outer portion I. A surface side surface is formed, and toward the non-skin contact surface side and inward of the body width direction so as to form a folded edge at the outer side of the wing-shaped flap portion 6 in the body width direction. After being folded back, it extends inward in the width direction of the main body to form a surface on the non-skin contact surface side of the wing-shaped flap portion 6, and the seal portion 8 at the side edge 10 a of the absorbent main body 10. Is joined to the back sheet 3.

  Further, as shown in FIG. 5, the wing-shaped flap portion forming sheet 6D extends from the center portion M of the wing-shaped flap portion 6 toward the inside in the width direction of the main body, and is on the skin contact surface side of the inner portion I. The side surface 10a of the absorbent main body 10 is joined to the back sheet 3 and the wing-shaped flap portion forming sheet 6C by the seal portion 8. The wing-shaped flap portion forming sheet 6D is sandwiched and fixed at the central portion M by wing-shaped flap portion forming sheets 6C facing each other. A flap adhesive portion 61 is formed on the non-skin contact surface side of the central portion M of the wing-shaped flap portion 6 as in the previous embodiment.

  Thus, the wing-shaped flap part 6 has a layer structure in which the number of nonwoven fabrics forming the thickness direction of the wing-shaped flap part 6 differs depending on the position in the main body width direction. In the present embodiment, each of the pair of wing-shaped flap portions 6 and 6 is formed of a nonwoven fabric having two layers in the width direction inner portion I of the absorbent main body 10, and the center portion M in the width direction has three layers. The outer portion O in the width direction is formed of two layers of nonwoven fabric.

  Moreover, in this embodiment, the side leak-proof part 5 is formed from 5 A of side leak-proof part formation sheets which consist of one sheet of nonwoven fabric, as shown in FIG. The side leakage preventing part forming sheet 5A is joined to the back sheet 3 together with the two wing-shaped flap part forming sheets 6C and 6D by the seal part 8 at the side edge part 10a of the absorbent main body 10. The side leak-proof portion 5 has a side leak-proof portion-forming sheet 5 </ b> A extending from the side edge 10 a of the absorbent main body 10 inward in the width direction of the absorbent main body 10, and the skin contact surface of the absorbent main body 10. Covers the side of the side. One end portion in the longitudinal direction of the side leak-proof portion forming sheet 5A is fixed to the back sheet 3 or the like by the seal portion 8, and the other end portion forms a free end portion at the side portion of the absorbent main body 10. is doing.

  According to the napkin 1 of this embodiment mentioned above, the effect similar to 1st Embodiment is show | played.

The absorbent article of the present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the gist of the present invention.
For example, in the absorbent article of the present invention, in each of the above-described embodiments, the flap adhesive portion 61 is formed only in the central portion M of the wing-shaped flap portion 6, but the flap adhesive portion 61 extends from the central portion M. Further, it may be formed to extend to the inner part I or the outer part O.

The absorbent article of the present invention may be a sanitary napkin, but may be a panty liner, an incontinence pad, or the like.
All the parts of only the one embodiment described above can be used together as appropriate.

  Next, the manufacturing method of the absorbent article of this invention is demonstrated, referring drawings based on the embodiment of the preferable manufacturing method of the sanitary napkin mentioned above.

  The first embodiment of the method for manufacturing the napkin 1 according to the first embodiment described above is a raw fabric (not shown) of a long nonwoven fabric wound in a roll shape as shown in FIGS. From the unwinding step of unwinding the nonwoven fabric continuum 60, both the longitudinal side portions 60a, 60a of the unwoven fabric continuum 60 unfolded are folded in three in the width direction so that the both sides overlap each other. The folded nonwoven fabric continuum 60 ', and the folded nonwoven fabric continuum 60' on both sides 60a ', 60a' so as to include a portion P where both sides 60a, 60a overlap. An embossing step for forming a long member 64 by forming a large number of embossed portions 63, 63,... With a predetermined width in a portion to be removed, and a portion where both sides of one surface of the long member 64 overlap. P The coating step of continuously applying the agent, and the long member 64 coated with the adhesive are swung in the width direction and within the predetermined width where the embossed portions 63, 63... Are formed. As described above, the first cutting step for producing the pair of side leakage preventing part continuous members 50 and 50 in which the wing-shaped flap part forming part 65 is intermittently formed by cutting in the longitudinal direction, and the pair of side leakage preventing parts The wing-shaped flap portion forming portions 65 are arranged on both side edges in the longitudinal direction of the absorbent main body continuity on the skin contact surface side longitudinal sides of the absorbent main body continuum produced separately. Joining the absorbent body continuum to produce the absorbent article continuum 1A so as to extend from the part and the applied adhesive faces the non-skin contact surface, and absorption Cutting of the continuous absorbent article 1A into individual absorbent articles Process.

  More specifically, in the present embodiment, the nonwoven fabric continuum 60 has air permeability, and after the feeding step, hot air is blown to the nonwoven fabric continuum 60 in an air-through manner to increase the bulk of the nonwoven fabric continuum 60. It has a hot air treatment process.

  To explain further, in this embodiment, in the joining step, the portion where the embossed portion 63 of the pair of side leakage preventing portion continuous members 50, 50 is not formed is arranged on the inner side in the width direction of the absorbent main body continuous body. A first bonding line 52 that is concave toward the first bonding line 52, and a second bonding line 53 that is positioned in the longitudinal direction of the absorbent body continuum of the first bonding line 52 and extends so as to intersect the longitudinal direction. Join the absorbent body continuum.

This embodiment will be described in further detail below.
First, in the feeding step, the nonwoven fabric continuous body 60 is fed out from a raw material (not shown) of a long nonwoven fabric wound in a roll shape.

The nonwoven fabric continuous body 60 has air permeability. Although the width | variety of the nonwoven fabric continuous body 60 is mentioned in detail later, it has the dimension which can form the side leak-proof part 5 and the wing-shaped flap part 6 in the napkin 1 in the state folded into three in this width direction. Is preferred.
The nonwoven fabric continuous body 60 in a state of being wound in a roll shape has its bulk (thickness) reduced by the winding pressure. In order to recover the bulk of the nonwoven fabric continuous body 60 in this state by the hot air treatment step, the fed nonwoven fabric continuous body 60 is sent to the hot air treatment step.

  In the hot air treatment step, hot air is blown to the fed nonwoven fabric continuous body 60 to restore the bulk. As a method for recovering the volume of the wound nonwoven fabric, for example, there is a method described in the specification of JP-A-2004-137655.

  The hot air treatment process will be further described. Hot air is blown onto the nonwoven fabric continuous body 60 by an air-through method. That is, hot air is blown to the nonwoven fabric continuous body 60, and the blown hot air penetrates the nonwoven fabric continuous body 60. By the operation of blowing hot air, the bulk of the nonwoven fabric continuous body 60 in a state where the bulk is reduced is increased and recovered to the same level as that before winding.

  The nonwoven fabric continuous body 60 subjected to the hot air treatment as described above is sent to the folding step.

In the folding step, as shown in FIG. 6 (a), both side portions 60a, 60a in the longitudinal direction of the nonwoven fabric continuous body 60 are folded in the width direction so that the both side portions overlap each other, and are folded in three. . When the side portions 60a and 60a are folded back, it is preferable that the side portions 60a and 60a are folded back so that the folded end portion 51 does not fold.
The width of the portion P where both side portions 60a and 60a overlap is 1 to 20%, particularly 3 to 13%, with respect to the width of the nonwoven fabric continuous body 60. It is preferable in securing each dimension.

As a device for folding both side portions 60a, 60a of the nonwoven fabric continuous body 60, various devices conventionally used for folding members of absorbent articles can be used. It is preferable to use a folding guide device that performs folding processing.
Then, the folded nonwoven fabric continuous body 60 'is sent to the embossing process.

  In the embossing step, the folded nonwoven fabric continuum 60 'includes the portion P where both side portions 60a and 60a overlap as shown in FIG. A number of embossed portions 63, 63... Are formed with a predetermined width in a portion excluding both side portions 60a ′, 60a ′ of 60 ′, that is, in the central portion in the width direction of the folded nonwoven fabric continuous body 60 ′. A long member 64 is produced. An embossed portion 63 is formed in a band shape on the folded nonwoven fabric continuous body 60 '. It is preferable that the width | variety which forms the embossed part 63 is 20 to 60% with respect to the width | variety of the folded nonwoven fabric continuous body 60 ', especially 30 to 50%. The widths of both side portions 60a 'and 60a' where the embossed portion is not formed are substantially the same.

The embossed portion 63 can be formed using, for example, a pair of embossed rolls in which embossed convex portions are regularly arranged on the peripheral surface.
And the elongate member 64 is sent to the said application | coating process.

  In the coating step, a pressure-sensitive adhesive such as a hot melt adhesive is continuously applied to the portion P where both sides overlap. The surface to be applied may be on either side of the elongated member 64, but in this embodiment, the adhesive is applied to the side of the nonwoven fabric continuous body 60 where the side ends 60 a and 60 a are not folded back. The surface to which the adhesive is applied is a surface that forms the non-skin contact surface side of the wing-shaped flap portion 6, and the portion to which the adhesive is applied becomes the flap adhesive portion 61. As an apparatus for applying the adhesive, various apparatuses conventionally used for applying an adhesive for absorbent articles can be used. In particular, after being applied to release paper or the like, it is transferred to the flap portion. A slot coating method and a slot spray method in which the coating is directly applied to the flap portion are preferable.

In addition, a long protective sheet (not shown) on which one surface is peeled off can be peeled off on the part where the pressure-sensitive adhesive has been applied so that the peeled surface comes into contact with the pressure-sensitive adhesive. Adhere to.
And the elongate member 64 with which the adhesive was apply | coated is sent to a said 1st cutting process.

In the first cutting step, as shown in FIG. 6C, the long member 64 coated with the adhesive is shaken in the width direction and within the predetermined width where the embossed portion 63 is formed. A pair of side leakage preventing portion continuous members 50 and 50 in which wing-shaped flap portion forming portions 65 are intermittently formed are produced by cutting in the longitudinal direction so as to move. As an apparatus for cutting, various apparatuses conventionally used for cutting members of absorbent articles can be used, and a rotary cutter or the like is particularly preferable.
The cutting is preferably performed so as to oscillate between both ends in the width direction in the belt-like portion where the embossed portion 63 is formed. The protective sheet protecting the adhesive is also cut at the same time.

In this way, as shown in FIG. 6D, the long member 64 is continuous in the side leak-proof portion forming portion 54 and discontinuous in the wing-shaped flap portion forming portion 65. The side leakage preventing portion continuous member 50 having a large number of leakage portion forming portions 54 and wing-shaped flap portion forming portions 65 is produced. The side leakage preventing part forming part 54 is a part of the side leakage preventing part continuous member 50 that forms the side leakage preventing part 5, and the wing-shaped flap part forming part 65 is the side leakage preventing part that forms the wing-shaped flap part 6. It is a part of the continuous member 50.
And a pair of side leak-proof part continuous members 50 and 50 are sent to the said joining process.

  In the joining step, as shown in FIG. 7 (a), the pair of side leak-proof portion continuous members 50, 50 are provided on both side portions in the longitudinal direction on the skin contact surface side in the separately produced topsheet continuous body 20. The top sheet continuous body 20 is formed such that the wing-shaped flap part forming part 65 extends from both side edges in the longitudinal direction of the top sheet continuous body 20 and the adhesive faces the non-skin contact surface side. Bonding to produce a surface sheet composite continuous body 20 '. As an apparatus for the bonding, various apparatuses conventionally used for bonding absorbent article members can be used. In particular, bonding using an adhesive such as a hot-melt adhesive or fusion bonding such as heat sealing. Is preferred.

  More specifically, the portion where the embossed portion 63 is not formed in each of the pair of side leakage preventing portion continuous members 50, 50, that is, the side leakage preventing portion forming portion 54, the width direction inner side of the topsheet continuous body 20. A first joining line 52 (not shown) having a concave shape toward the surface, and a second joining line 52 that is positioned before and after the longitudinal direction of the surface sheet continuous body 20 of the first joining line 52 and extends so as to intersect the longitudinal direction. The top sheet continuous body 20 is joined by a joining line 53 (not shown).

  The first joint line 52 is formed in the side leakage preventing part forming part 54 adjacent to the wing-shaped flap part forming part 65, and the first joining line 52 and the second joining line 53 positioned before and after the first joining line 52 are combined. Each of the second bonding lines 53 is formed so that the length is the length of one napkin. Each of the first bonding line 52 and the second bonding line 53 is preferably formed in the same manner as the napkin 1 of the first embodiment described above.

Next, as shown in FIG. 7 (b), the top sheet composite continuous body 20 ′ is separately prepared and bonded onto the back sheet continuous body 30 on which the absorber 4 is placed and bonded at a predetermined interval. Thus, the absorbent article continuum 1A is produced. As an apparatus for the bonding, various apparatuses conventionally used for bonding absorbent article members can be used. In particular, bonding using an adhesive such as a hot-melt adhesive or fusion bonding such as heat sealing. Is preferred.
The top sheet composite continuous body 20 ′ is such that the wing-shaped flap portion forming portion 65 extends from both side edges in the longitudinal direction of the back sheet continuous body 30 and the applied adhesive is on the non-skin contact surface side. The back sheet continuous body 30 is bonded so as to face. Moreover, it is preferable to place and join a polymer sheet 41 separately prepared and prepared on the absorber 4.

  More specifically, the top sheet composite continuum 20 ′ is formed along the boundary between the side leakage preventing part forming part 54 and the wing-shaped flap part forming part 65. It joins to back sheet continuum 30 so that the side of a direction may be covered. Further, the upper and lower surfaces are joined across the width direction at a predetermined interval corresponding to the length of the napkin 1 to form a seal portion. Thus, the laminated body continuous body including the top sheet continuous body 20, the back sheet continuous body 30, and the absorbent body 4 that is interposed and spaced apart from both continuous bodies forms the absorbent main body continuous body. is doing. Thus, in order to join the pair of side leakage preventing part continuous members 50, 50 to the absorbent main body continuum, a pair of members (surface sheet continuous body 20) constituting the absorbent main body continuum is previously provided. Forming the absorbent main body continuity after joining the side leakage preventing part continuation members 50, 50.

Thereafter, the absorbent article continuum 1A is sent to the second cutting step, and in the second cutting step, the absorbent article continuum 1A is intermittently moved in the longitudinal direction as shown in FIG. The seal part as the formed cut part is cut across the width direction to obtain the napkin 1 as each absorbent article of the present invention. As the apparatus for cutting, various apparatuses conventionally used for cutting absorbent articles can be used, and a rotary cutter or the like is particularly preferable.
In addition, in this embodiment, the member which is not demonstrated especially including the surface sheet continuous body 20 grade | etc., Is manufactured in accordance with a conventional method.

  According to this embodiment described above, the side leakage preventing portion 5 and the wing-shaped flap portion 6 can be integrally formed from a single long nonwoven fabric continuous body 60, so that the manufacturing process is simplified. In addition, variable costs can be reduced.

  The manufacturing method of the absorbent article of this invention is not restrict | limited to the embodiment mentioned above, and can be suitably changed unless it deviates from the meaning of this invention.

FIG. 1 is a plan view showing a first embodiment of a sanitary napkin as an absorbent article of the present invention. 2 is an enlarged sectional view taken along line XX in FIG. FIG. 3 is an enlarged plan view showing a joining line in the side leakage preventing portion of the sanitary napkin shown in FIG. FIG. 4 is a plan view showing a second embodiment of the sanitary napkin as the absorbent article of the present invention. FIG. 5 is an enlarged sectional view taken along line YY in FIG. Each of FIGS. 6A to 6D is an explanatory diagram of a first embodiment of a preferable method for producing an absorbent article of the present invention. 7 (a) and 7 (b) are diagrams for further explaining the preferred method for producing an absorbent article of the present invention shown in FIG.

Explanation of symbols

1 Sanitary napkin (absorbent article)
DESCRIPTION OF SYMBOLS 1A Absorbent article continuous body 10 Absorbent main body 10a Side edge part in the longitudinal direction of the absorbent main body 101 Absorbent main body continuous body 11 Absorbent layer 12 Leakproof layer 2 Top sheet 3 Back sheet 4 Absorber 41 Polymer sheet 5 Side leakproof Part 50 Side leakage prevention part continuous member 5A Side leakage prevention part forming sheet 51 Folding end part 52 First joint line 52a Part close to the folding end part 52b Part far from the folding end part 52c Pocket 53 Second joining line 53a On the folding end part Near part 53b Far part from folded end part 53c Pocket 6 Wing-like flap part 6A, 6B, 6C, 6D Wing-like flap part forming sheet 60 Non-woven fabric continuous body 60 'Folded nonwoven fabric continuous body 60a Both sides of longitudinal direction of nonwoven fabric continuous body Part 60a 'both sides of the longitudinal direction of the folded nonwoven fabric continuous body 61 flap viscosity Outer portion of the central portion O wing-shaped flaps of the inner portion M wing-shaped flaps parts 62 base 63 embossed portion 64 elongated member 7 groove 8 sealing portion 100A raw I wing-shaped flap portion

Claims (8)

In an absorbent article comprising a substantially longitudinal absorbent main body having an absorbent layer and a leak-proof layer, and having a pair of wing-shaped flap portions extending from both side edges in the longitudinal direction of the absorbent main body,
Each of the pair of wing-shaped flap portions is formed so as to have a layer structure in the thickness direction from the nonwoven fabric, and the nonwoven fabric is positioned more outwardly in the width direction in the absorbent main body than the base portion. The absorbent article which has a part with many layers, and this part and the flap adhesion part formed in the non-skin contact surface side have overlapped.   In each of the pair of wing-shaped flap portions, the central portion in the width direction of the absorbent main body is formed of a three-layer nonwoven fabric, and the inner portion positioned inward in the width direction from the central portion is 2 The absorbent article of Claim 1 currently formed from the nonwoven fabric of the layer. It has a pair of side leak-proof portions, and the pair of side leak-proof portions cover both longitudinal sides on the skin contact surface side of the absorbent main body, and each of the pair of side leak-proof portions And each of the pair of wing-shaped flap portions are integrally formed,
The absorbent article according to claim 1 or 2, wherein a plurality of embossed portions are formed in each of the pair of wing-shaped flap portions.   Each of the pair of side leak-proof portions is formed of the non-woven fabric forming the wing-shaped flap portion, and the non-woven fabric is outward in the width direction so that the absorbent main body has a folded end portion in the width direction. The absorbent article according to claim 3, wherein the inner surfaces of the folded end portions are at least partially separated from each other. Each of the pair of side leak-proof portions is positioned in the longitudinal direction of the absorbent main body of the first joint line, the first joint line having a concave shape toward the inner side in the width direction of the absorbent main body. And joined to the absorbent main body by a second joining line extending so as to intersect the longitudinal direction,
Between the first joint line and the folded end portion in each of the pair of side leakage preventing portions, a pocket that is opened when worn is formed,
The second joint line alternately has portions close to the folded end and portions far from the folded end, and a distance between adjacent portions close to the folded end is the first joint. The absorbent article of Claim 4 shorter than the length of the longitudinal direction of a line | wire. It is a manufacturing method of the absorptive article according to claim 3,
From the raw fabric of the long nonwoven fabric wound in a roll shape, a feeding step of feeding out the nonwoven fabric continuous body;
A folding step of folding each of the both sides in the longitudinal direction of the unwoven fabric that has been drawn out into three to fold in the width direction so that the both sides overlap each other;
Forming a plurality of embossed portions with a predetermined width in a portion excluding both sides of the folded nonwoven fabric continuous body so that the folded nonwoven fabric continuous portion includes a portion where both side portions overlap; An embossing process for producing a long member;
On the one surface of the elongated member, an application step of continuously applying an adhesive to the portion where the both side portions overlap,
The long member coated with the adhesive is cut in the longitudinal direction so as to swing in the width direction and within the predetermined width in which the embossed portion is formed, and a wing-shaped flap portion A first cutting step for producing a pair of side leakage preventing part continuous members formed intermittently;
A pair of the side leakage preventing part continuous members are separately formed on both sides of the skin contact surface side in the longitudinal direction of the skin contact surface side of the absorbent body continuous body, and the wing-shaped flap part forming portions are in the longitudinal direction of the absorbent body continuous body. Joining the absorbent body continuum to produce an absorbent article continuum so that the applied adhesive extends to the non-skin contact surface side so as to extend from both side edges of the ,
The manufacturing method of an absorbent article which comprises the 2nd cutting process of cut | disconnecting the said absorbent article continuous body into each absorbent article.   The said nonwoven fabric continuous body has air permeability, and has a hot-air process process which increases the volume of this nonwoven fabric continuous body by spraying a hot air to this nonwoven fabric continuous body by an air through method after the said drawing-out process. Manufacturing method for absorbent articles. In the joining step, a portion where the embossed part in the pair of side leakage preventing part continuous members is not formed,
The first joint line that is concave toward the inner side in the width direction of the absorbent main body continuity, and the first joint line is positioned before and after the longitudinal direction of the absorbent main body continuum and intersects the longitudinal direction. The manufacturing method of the absorbent article of Claim 6 or 7 joined to this absorptive main body continuous body by the 2nd joining line extended so that it may extend.

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