JP2007151597A - Absorbent article and manufacturing method of the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve air permeability and softness of an absorbent article. <P>SOLUTION: The absorbent article is provided with: an exterior sheet 12 having an air permeable outer side layer 12S, an air permeable inner side layer 12H and a plurality of thin and long elastic members 12C interposed between them, spaced at an interval and fixed in a stretched state; and an absorption part 20 provided on the body side of the exterior sheet 12 for absorbing and holding an object, wherein the elastic members 12C are bonded to both of the outer side layer 12S and the inner side layer 12H through an adhesive BA applied to the outer surface of the elastic member 12C, and a part SP without the adhesive BA is provided between the outer side layer 12S and the inner side layer 12H between the adhesion parts of the elastic members 12C. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to disposable absorbent articles such as disposable diapers and sanitary napkins.

In infant and adult tape-type or pants-type disposable diapers, a top sheet that is located on the body side and transmits body fluid, a back sheet that is located on the back side and prevents body fluid from passing through, and is interposed between these sheets. The absorbent body that absorbs excreted body fluid that has passed through the top sheet is used as an absorbent section, and the back sheet side of the absorbent section is joined to the body side of an exterior sheet made of a nonwoven fabric or the like.
Especially in many pants-type diapers, the entire exterior sheet is a two-layer sheet composed of an outer layer and an inner layer, and elastic elastic members such as rubber thread are fixed between these layers with an adhesive, and the waist and abdomen The fit is improved. Fit is important not only for wearing feeling but also for preventing leakage.
JP 2004-208836 A JP 2002-159529 A JP 2002-159528 A

However, the absorbent article having such an exterior sheet has a problem that stuffiness due to moisture of excreta is easily generated and a problem that the exterior sheet is poor in softness.
Therefore, a main problem of the present invention is to improve air permeability and softness.

The present invention that has solved the above problems is as follows.
<Invention of Claim 1>
A breathable outer layer, a breathable inner layer, and an exterior sheet having a plurality of elongated elastic elastic members interposed between them, spaced apart from each other and fixed in an expanded state, In the absorbent article provided with the absorption part that absorbs and holds the object provided on the body side of the exterior sheet,
In the exterior sheet, the elastic elastic member is bonded to both the outer layer and the inner layer via an adhesive, and a small portion having no adhesive between the outer layer and the inner layer between the bonded portions of the elastic elastic member. With an adhesive part,
An absorbent article characterized by the above.

(Function and effect)
As a result of diligent research on the cause of stuffiness, the present inventors have found that stuffiness has occurred due to the shielding effect of the exterior sheet, the exterior sheet has a two-layer structure, and an adhesive for fixing the elastic elastic member is available. It was found that the breathability and softness were extremely deteriorated due to the application. The exterior sheet has a two-layer structure, and the adhesive is applied to fix the elastic stretchable member between the layers. When these are sacrificed to improve the air permeability, the fit is improved. Cannot be improved.
Therefore, as a result of further research, the present inventors continuously applied the adhesive over the entire exterior sheet (solid coating) even though the conventional product does not have an elastic stretchable member so as to cover the entire exterior sheet. I realized that I was doing. The present invention has been made based on such knowledge, and in the exterior sheet, the elastic stretchable member is bonded to both the outer layer and the inner layer via an adhesive, and between the bonded portions of the elastic stretchable member. It is characterized by having a small adhesive part having a part without an adhesive between the outer layer and the inner layer.
As a result, a small adhesive portion having an adhesive only in the portion having the elastic elastic member and not having an adhesive therebetween is formed, and the air permeability and softness are improved by reducing the amount of the adhesive used. Become figured. Moreover, since the elastic elastic member is bonded to the outer layer and the inner layer via an adhesive at the site where the elastic elastic member is present, the same degree of adhesion as in the conventional case is possible.

<Invention of Claim 2>
The absorbent article according to claim 1, wherein the elastic stretchable member in the small adhesive portion is coated with the adhesive at least in the entire circumferential direction.

(Function and effect)
It is preferable that an adhesive is applied to at least the entire circumferential direction of the elastic stretchable member because even if the elastic stretchable member is twisted, it can be securely bonded to both the outer layer and the inner layer.

<Invention of Claim 3>
The exterior sheet has an abdominal part and a dorsal part that cover the user's abdomen and dorsal side, and the elastic stretchable member extends in the width direction within a predetermined range in the front-rear direction of each of the abdomen and dorsal parts The absorbent article according to claim 1, wherein a plurality of the elastic stretch members are arranged as the small adhesive portion along the front and rear sides of the elastic stretch member.

(Function and effect)
In particular, in a pants-type paper diaper or the like, elastic stretchable members are arranged over a wide range in each of the abdominal part and the back part in order to improve the overall fit. In other words, the softness and breathability are reduced by the use of the adhesive. Therefore, the present invention is particularly suitable for such a case.

<Invention of Claim 4>
A part of the small adhesive portion has an auxiliary adhesive intermittently applied along the extending direction of the elastic elastic member between the outer layer and the inner layer between the adhesive portions of the elastic elastic member. The absorbent article according to claim 1 or 2, wherein the outer layer and the inner layer are bonded by an adhesive.

(Function and effect)
As described above, the present invention is characterized in that the exterior sheet is provided with a small adhesive portion. However, since this small adhesive portion uses a small amount of adhesive, the outer portion is not used in a region where force is concentrated. There is a possibility that the layer and the inner layer are peeled off. Therefore, if an auxiliary adhesive is applied intermittently along the extending direction of the elastic stretchable member as described in this section, the adhesion between the outer layer and the inner layer is not impaired without impairing the air permeability. Can be reinforced.

<Invention of Claim 5>
The absorptive article according to any one of claims 1 to 4 with which said exterior sheet is provided with a layer-saving part which does not have said elastic elastic member and at least one of an outside layer and an inside layer.

(Function and effect)
In the conventional product, although the elastic sheet member is not provided on the entire exterior sheet, and it is not necessary, the entire exterior sheet has been made into two layers, so that the air permeability is hindered. Therefore, it is also a preferred form to provide a layer-saving portion with few layers as described in this section. The exterior sheet, which has conventionally been of a two-layer structure, is formed with a portion that does not have at least one of an elastic elastic member, an outer layer, and an inner layer, thereby preventing vaporization by improving air permeability. become.

<Invention of Claim 6>
The elastic elastic member in the small adhesive portion has a thickness of 1000 dtex or less and is provided at an interval of 1 to 20 mm, and adhesion for bonding the elastic elastic member to both the outer layer and the inner layer The absorbent article according to any one of claims 1 to 5, wherein the agent is applied in an amount of 0.01 to 0.04 g / m per unit length of the elastic elastic member.

(Function and effect)
The thickness, interval, and adhesive application amount of the elastic elastic member are closely related to the softness and breathability of the exterior sheet. If the elastic elastic member is too thick, the interval is too narrow, or the amount of adhesive applied is too large, the softness and air permeability will deteriorate. In addition, when the elastic stretchable member is too thin, the interval is too wide, or the adhesive application amount is too small, the fit property is deteriorated. Therefore, these elements are preferably in the numerical range described in this section.

<Invention of Claim 7>
The adhesive is applied to at least the contact portion with the inner layer and the contact portion with the outer layer of the plurality of elongated elastic stretch members, and the plurality of elastic stretch members coated with these adhesives are spaced apart from each other. A step of producing an exterior sheet by sandwiching and adhering between a breathable outer layer and a breathable inner layer in an open arrangement and extending in the longitudinal direction;
A step of manufacturing an absorption part for absorbing and holding an object;
Attaching the absorber to a predetermined part on the exterior sheet;
The manufacturing method of the absorbent article characterized by including this.

(Function and effect)
According to the invention described in this section, an absorbent article excellent in air permeability and softness similar to that of the invention described in claim 1 can be manufactured.

<Invention of Claim 8>
In applying the adhesive to the elastic elastic member, the elastic elastic member is stretched in the air, and the adhesive is applied along the longitudinal direction of the elastic elastic member from above with a reciprocating width equal to or greater than the circumferential length of the elastic elastic member. The said adhesive agent is apply | coated to at least the whole circumferential direction of the said elastic elastic member by spirally apply | coating and winding the adhesive agent which protrudes on both sides of an elastic elastic member to the lower surface side of an elastic elastic member. Manufacturing method for absorbent articles.

(Function and effect)
According to the invention described in this section, the same effect as that of the invention described in claim 2 can be obtained.

  As described above, according to the present invention, there are advantages such as improved air permeability and softness.

  Hereinafter, one embodiment of the present invention will be described in detail based on an example of a pants-type diaper. The present invention can be applied to general absorbent articles such as tape-fastened paper diapers, sanitary napkins, incontinence pads, and absorbent pads used in combination with diaper covers. These applications are based on this embodiment. Therefore, the explanation is omitted.

<First Embodiment>
An example of a pants-type disposable diaper is shown in FIGS. This pants-type disposable diaper 10 includes an exterior sheet 12 that constitutes an exterior sheet, and an absorbent portion 20 that is fixed to the body side (inner surface side). The absorption part 20 is a part that receives and absorbs and holds excretion such as urine and loose stool (menstrual blood in the sanitary napkin), and the exterior sheet 12 is a part for supporting the absorption part 20 to the wearer. .

(Exterior sheet)
The exterior sheet 12 includes a trunk periphery 12T that is defined as a front-rear direction range that extends from the trunk opening WO to the upper end of the leg opening LO, and an intermediate portion 12L that is defined as a front-rear direction range of a portion that forms the leg opening LO. . The trunk periphery 12T can be conceptually divided into a “trunk upper end” 12W and a “trunk lower” 12U. These lengths in the front-rear direction vary depending on the size of the product, and can be determined as appropriate. For example, the upper part 12W of the waistline can be 15 to 40 mm, and the lower part 12U of the waistline can be 65 to 120 mm. . On the other hand, both side edges of the intermediate portion 12L are constricted along the circumference of the wearer's leg, and this is a portion into which the wearer's leg is placed. As a result, the exterior sheet 12 has a substantially hourglass shape as a whole. In the illustrated example, the width of the exterior sheet 12 in the crotch portion is shorter than that of the absorbing portion 20, but this width relationship may be reversed or the same width.

As shown in FIG. 5, the exterior sheet 12 is formed by laminating a breathable outer layer 12 </ b> S and a breathable inner layer 12 </ b> H with an adhesive such as a hot melt adhesive. The outer layer 12S and the inner layer 12H can be used without any limitation as long as they are breathable materials, but it is preferable to use a water-repellent nonwoven fabric from the viewpoint of touch and waterproofness. Each of the outer layer 12S and the inner layer 12H may be formed by laminating a plurality of materials. The thicknesses of the outer layer 12S and the inner layer 12H can be determined as appropriate, but the thickness of the outer layer 12S is preferably equal to or greater than the thickness of the inner layer 12H. The outer layer 12S and the inner layer 12H are each preferably in the range of 5 to 30 g / m ^{2 in} basis weight. The thickness of the outer layer 12S is preferably 5 mm or less, and the thickness of the inner layer 12H is preferably 1 mm or less.

Between the outer layer 12S and the inner layer 12H in the exterior sheet 12, an elastic elastic member 12C is fixed in an extended state. The elastic stretchable member 12C can be used without particular limitation as long as it is a long and narrow rubber material such as a thread, string or belt.
More specifically, a large number of waist elastic elastic members 12C extending along the width direction between the two layers 12S and 12H in the waist lower portion 12U of the exterior sheet 12 with a predetermined interval in the front-rear direction, for example, 15 About 40 are provided in parallel.

  As shown in FIGS. 9 and 10, the waist elastic elastic member 12 </ b> C is cut by embossing, needle sticking, or the like at the portion overlapping the absorbing portion 20, or the waist elastic elastic member 12 </ b> C is not provided at the portion overlapping the absorbing portion 20. Thus, the contraction force can be eliminated or weakened. In the case of cutting, as disclosed in Japanese Patent Application Laid-Open No. 2002-178428, a plurality of points may be cut at predetermined intervals in the width direction, or only one point may be cut. Thus, if the elastic stretchable member 12C is discontinuous in the portion overlapping with the absorbing portion 20 (either part or all), the contraction force acting on the absorbing portion 20 is lost or weakened, Absorption inhibition due to the contraction of the absorption portion 20 is less likely to occur. The width of the cut or missing portion of the elastic elastic member 12C can be determined as appropriate. Further, unlike the illustrated embodiment, the waist elastic elastic member 12C can be made discontinuous only in either the back side B or the ventral side F.

  In the front-rear direction range having the waist elastic elastic member 12C, as shown in FIG. 7, the waist elastic elastic member 12C is bonded to both the outer layer 12S and the inner layer 12H via the adhesive BA. At the same time, a small adhesive portion having a portion SP having no adhesive between the outer layer 12S and the inner layer 21H between the bonded portions of the elastic elastic member 12C is provided. FIG. 7 is an enlarged view of the main part of the back portion B, but basically the same applies to the ventral side F as easily understood from the comparison with FIG.

  It is sufficient that the adhesive BA is interposed at least in contact with the outer layer 12S and the inner layer 21H in the circumferential direction of the waist elastic member 12C, and is continuously interposed in the longitudinal direction of the waist elastic member 12C. Alternatively, it may be interposed intermittently. The adhesive BA is preferably applied to the outer surface of the elastic elastic member 12C, particularly the entire circumferential direction as shown in the figure, but applied to the contact portion of the elastic elastic member 12C in the outer layer 12S and the inner layer 21H. These may be combined or these may be combined. Further, the adhesive BA may be applied to the entire outer surface of the waist elastic elastic member 12C. An example of the application method will be described later.

  In the small adhesive portion, it is preferable that substantially the entire portion between the outer layer 12S and the inner layer 21H between the bonded portions of the elastic elastic member 12C does not have an adhesive. However, the elastic expansion and contraction is partially performed in a portion where the adhesion between the outer layer 12S and the inner layer 12H is insufficient, such as a portion where the arrangement interval of the elastic elastic members 12C is wide or an end portion of the inner layer 12H. The auxiliary adhesive BS is intermittently applied along the extending direction of the elastic elastic member 12C between the outer layer 12S and the inner layer 12H between the bonded portions of the member 12C, and auxiliary adhesion is not performed without the elastic elastic member 12C. It is also possible to bond between the outer layer 12S and the inner layer 12H only through the agent BS. As a specific application form, as shown also in FIG. 6, spiral application, summit application, etc. can be used suitably.

  The thickness and arrangement interval of the elastic elastic member 12C located in the small adhesive portion, the application amount of the adhesive BA can be appropriately determined, but preferably the thickness is 1000 dtex or less, particularly 700 to 400 dtex, the arrangement interval is The application amount of the adhesive BA per unit length of 1 to 20 mm, particularly 1 to 10 mm, and the elastic elastic member 12C is 0.01 to 0.04 g / m, particularly 0.02 to 0.03 g / m. . If the elastic elastic member 12C located in the small adhesive portion is too thick, the interval is too narrow, or the amount of the adhesive BA applied is too large, the softness and the air permeability are lowered. On the contrary, if the elastic elastic member 12C is too thin, the interval is too wide, or the application amount of the adhesive BA is too small, the fit property is lowered.

  In the diaper thus configured, since the adhesive BA is provided only in the portion having the waist elastic elastic member 12C in the waist lower portion 12U, and the portion SP without the adhesive is provided therebetween, the amount of adhesive used is reduced. As a result, air permeability and softness can be improved.

  On the other hand, at the upper end U around the trunk of the exterior sheet 12, the outer layer 12S is folded back inside the exterior sheet 12 at the trunk opening WO, and the edge of the trunk opening WO is between the folded portion 12Z and the exterior sheet 12. A body end elastic elastic member 12D is fixed in an extended state with an interval in parallel with each other. The thickness, interval, and number of the trunk end elastic members 12D can be determined as appropriate. For example, the thickness is preferably 400 to 900 dtex, the interval is 3 to 6 mm, and the number is preferably about 4 to 10.

  In the illustrated form, the adhesive BY is continuously applied between the folded portion 12Z and the exterior sheet 12 over the entire predetermined range including the portion where the trunk end elastic elastic member 12D is disposed. The trunk end elastic elastic member 12D usually has a stronger elastic force than the waist elastic elastic member 12C, and thus is required to be more firmly fixed. Therefore, the bonding form as shown is preferable. However, as with the waist elastic elastic member 12C, it is also possible to provide an adhesive only for the trunk end elastic elastic member 12D and not to provide an adhesive between the adhesive parts (not shown).

  By the way, in this embodiment, almost all of the portions other than the portion where the waistline elastic elastic member 12C is arranged, that is, almost all except the front and rear edges of the intermediate portion 12L in the exterior sheet 12, have the outer layer 12S over the entire width. The layer-saving portion 12P does not have 12H and the waist elastic elastic member 12C. Moreover, although the inner layer 12H is provided individually so as to cover at least the waist portion 12T on the stomach side and the back side of the exterior sheet 12, the inner layers 12H and 12H do not overlap each other. As a result, the air permeability in the crotch part and the part near the crotch where it is easily sultry is drastically improved, and sultry is prevented.

  The length in the front-rear direction of the layer-saving portion 12P is preferably 30% or more, particularly 35-65% or more of the length in the front-rear direction of the article. Further, in terms of the area ratio of the portion that overlaps the back surface of the absorbing portion 20, the transparency improving portion 12P is configured to overlap 30% or more, particularly 35 to 50%, with respect to the entire back surface of the absorbing portion 20. preferable. From the viewpoint of improving the air permeability, the layer saving portion 12P is preferably as large as possible. However, if the layer saving portion 12P is excessively large, there is no portion where the waist elastic elastic member 12C is provided, and the fit property may be impaired.

  The layer saving portion 12P is not limited to the above form, and as shown in FIGS. 11 and 12, all of the inner layer 12H, the outer layer 12S, and the elastic elastic member 12C (in other words, the exterior sheet 12 itself) are provided. Although not shown, although not shown, there are various types such as having an inner layer but not having an outer layer and an elastic expansion / contraction member, providing in the waistline portion 12T, and providing a plurality at intervals in the front-rear direction of the article. Deformation is possible.

(Absorption part)
As shown in FIG. 3, the absorbent portion 20 may include a topsheet 30 made of, for example, a nonwoven fabric that allows body fluid to permeate, and an absorbent element 50 in order from the use surface side. In a normal case, a body fluid impermeable sheet (also called a back sheet) 70 made of a plastic sheet or the like is provided on the back side of the absorbent element 50. In addition, an intermediate sheet (second sheet) 40 can be provided between the top sheet 30 and the absorbent element 50 in order to quickly transfer body fluid that has passed through the top sheet 30 to the absorbent element 50. Furthermore, in order to prevent excrement from leaking on both sides of the absorption part 20, barrier cuffs 60, 60 standing on both sides of the absorption part 20 can be provided. The absorption part 20 can take an arbitrary shape in addition to a rectangular shape as illustrated.
Moreover, as for the absorption part 20, the back surface of a predetermined part (For example, front end part and rear end part like illustration form) is joined with the adhesive agent BZ with respect to the body side surface of the exterior sheet 12. FIG. Appropriate forms such as solid, summit, spiral, etc. can be adopted as the form of application of the adhesive.

(Top sheet)
The top sheet 30 has a property of permeating body fluid. Therefore, the material of the top sheet 30 is sufficient as long as it exhibits this body fluid permeability, and examples thereof include a porous or non-porous nonwoven fabric and a porous plastic sheet. Of these, the nonwoven fabric is not particularly limited as to what the raw fiber is. Examples include synthetic fibers such as polyethylene and polypropylene such as olefins, polyesters and polyamides, recycled fibers such as rayon and cupra, natural fibers such as cotton, and mixed fibers in which two or more of these are used. can do. Furthermore, the nonwoven fabric may be manufactured by any processing. Examples of the processing method include known methods such as a spunlace method, a spunbond method, a thermal bond method, a melt blown method, and a needle punch method. For example, the spun lace method is a preferable processing method when the flexibility and drape properties are required, and the thermal bond method is the preferable processing method when the bulkiness and softness are required.
The top sheet 30 may be composed of a single sheet or a laminated sheet obtained by bonding two or more sheets. Similarly, the top sheet 30 may be composed of one sheet or two or more sheets in the planar direction.

(Intermediate sheet)
In order to quickly transfer the body fluid that has permeated through the top sheet 30 to the absorbent body, an intermediate sheet 40 that is generally referred to as a “second sheet” that has a higher body fluid permeation rate than the top sheet 30 can be provided. The intermediate sheet 40 not only improves the absorption performance by the absorbent body by quickly transferring the body fluid to the absorbent body, but also prevents the “reversal” phenomenon of the absorbed body fluid from the absorbent body, and the top sheet 30 is always dried. It can be made into the state which carried out. The intermediate sheet 40 can be omitted.
Examples of the intermediate sheet 40 include the same materials as the top sheet 30, spunlace, pulp nonwoven fabric, a mixed sheet of pulp and rayon, point bond, or crepe paper. In particular, an air-through nonwoven fabric and a spunbond nonwoven fabric are preferable.
The intermediate sheet 40 in the illustrated form is disposed in the center shorter than the width of the absorber 56, but may be provided over the entire width. The length of the intermediate sheet 40 in the longitudinal direction may be the same as the length of the absorbent body 56 or may be within a short length range centered on the region that receives the body fluid. A typical material for the intermediate sheet 40 is a nonwoven fabric having excellent body fluid permeability.

(Body fluid impermeable sheet)
The body fluid impermeable sheet 70 simply means a sheet disposed on the back surface side of the absorber 56, and in the present embodiment, is a sheet in which the absorber 56 is interposed between the top sheet 30. Therefore, the material of the main body liquid impermeable sheet is not particularly limited. Specifically, for example, an olefin resin such as polyethylene or polypropylene, a laminated nonwoven fabric obtained by laminating a nonwoven fabric on a polyethylene sheet or the like, a nonwoven fabric that substantially ensures liquid impermeability by interposing a waterproof film (in this case, A body fluid impermeable sheet is comprised with a waterproof film and a nonwoven fabric.) Etc. can be illustrated. Of course, in addition to this, materials having liquid impermeability and moisture permeability, which have been used and used in recent years from the viewpoint of preventing stuffiness, can also be exemplified. As the sheet of the material having liquid impermeability and moisture permeability, for example, an inorganic filler is kneaded in an olefin resin such as polyethylene or polypropylene, and the sheet is formed, and then stretched in a uniaxial or biaxial direction. Examples of the microporous sheet obtained in this way can be given.
The body fluid impervious sheet 70 can be prevented from side leakage of body fluid by extending it to the use surface in a so-called forehead form (not shown). This is prevented by interposing a second body fluid impermeable sheet 72 between the double barrier sheets 64 forming 60. According to this embodiment, since the second body fluid impermeable sheet 72 extends until the barrier cuff 60 stands up, the body fluid diffused laterally through the top sheet 30 and the side of the soft stool between the barrier cuffs 60, 60 There is also an advantage that leakage can be prevented.
The bodily fluid impermeable sheet 70 can be provided with a display section for a product name, a function description, a character, a pattern, and the like, and this display section may have a notification function for informing that urination has occurred.

(Barrier cuffs)
Barrier cuffs 60, 60 provided on both sides of the product are provided to prevent urine and soft stool that travel laterally along the top sheet 30 and prevent side leakage. It is.
The illustrated barrier cuff 60 is a doubled water-repellent non-woven sheet, and is formed so as to protrude from the back side of the absorbent body 56 to the lower side of the top sheet 30 and to protrude to the front side. Yes. In order to prevent urine moving in the lateral direction along the top sheet 30, in particular, the side part of the body fluid impermeable sheet 70 is inserted between the double nonwoven fabric sheets, and the barrier cuff 60 protruding from the surface side is provided. It extends halfway.
The shape of the barrier cuff 60 itself can be designed as appropriate. However, in the example shown in the drawing, an elastic elastic member, for example, a rubber thread 62 is fixed to the tip and middle of the protruding portion of the barrier cuff 60 under stretch, The barrier cuff 60 stands up due to the contraction force in use. As shown in FIG. 3, the base side of the barrier cuff 60 is positioned so that the middle rubber thread 62 is positioned at the center side of the front rubber thread 62, 62 and fixed to the front and rear end portions of the top sheet 30. It rises diagonally toward the center side, and the tip part stands up diagonally outward from the intermediate part.

(Absorption element)
The absorbent element 50 includes an absorbent body 56 and a covering sheet 58 that wraps at least the back and side surfaces of the absorbent body 56. The covering sheet 58 can be omitted. Further, in the illustrated embodiment, the holding sheet 80 is provided between the absorber 56 and the back surface side portion (lower part) of the covering sheet 58, but the holding sheet 80 may be omitted.

(Absorber)
As the absorbent body 56, there can be used, for example, a cotton pulp that is widely used in the field of absorbent articles and the like, which is formed by stacking staples, and which is composed of an assembly of filaments 52, 52.
The aggregate of filaments 52, 52... Can be obtained by opening a tow (fiber bundle). Examples of tow fibers include polysaccharides or derivatives thereof (cellulose, cellulose ester, chitin, chitosan, etc.), synthetic polymers (polyethylene, polypropylene, polyamide, polyester, polylactamamide, polyvinyl acetate, etc.). In particular, cellulose esters and cellulose are preferable.

As cellulose, cellulose derived from plants such as cotton, linter, and wood pulp, and bacterial cellulose can be used. Regenerated cellulose such as rayon may be used, and the regenerated cellulose may be a spun fiber.
Examples of cellulose esters that can be suitably used include organic acid esters such as cellulose acetate, cellulose butyrate, and cellulose propionate; mixed acid esters such as cellulose acetate propionate, cellulose acetate butyrate, cellulose acetate phthalate, and cellulose nitrate acetate. And cellulose ester derivatives such as polycaprolactone-grafted cellulose ester can be used. These cellulose esters can be used alone or in admixture of two or more. The viscosity average degree of polymerization of the cellulose ester is, for example, about 50 to 900, preferably about 200 to 800. The average substitution degree of the cellulose ester is, for example, about 1.5 to 3.0 (for example, 2 to 3).
The average degree of polymerization of the cellulose ester can be, for example, 10 to 1000, preferably 50 to 900, more preferably about 200 to 800, and the average degree of substitution of the cellulose ester is, for example, about 1 to 3, preferably 1 to 1. 2.15, more preferably about 1.1 to 2.0. The average degree of substitution of the cellulose ester can be selected from the viewpoint of enhancing biodegradability.
As the cellulose ester, an organic acid ester (for example, an ester with an organic acid having about 2 to 4 carbon atoms), particularly cellulose acetate is suitable. The degree of acetylation of cellulose acetate is often about 43 to 62%, but about 30 to 50% is particularly preferable because it is excellent in biodegradability. A particularly preferred cellulose ester is cellulose diacetate.

The tow constituent fiber may contain various additives such as a heat stabilizer, a colorant, an oil agent, a yield improver, a whiteness improver, and the like.
The fineness of the tow constituting fiber is, for example, 1 to 16 denier, preferably 1 to 10 denier, and more preferably 1 to 6 denier. The tow constituent fiber may be a non-crimped fiber, but is preferably a crimped fiber. The crimped degree of the crimped fiber can be, for example, 5 to 75, preferably 10 to 50, and more preferably about 15 to 50 per inch. In addition, a crimped fiber that is uniformly crimped is often used. When crimped fibers are used, a bulky and light absorbent body can be produced, and a tow with high unity can be easily produced by entanglement between the fibers. The cross-sectional shape of the tow constituting fiber is not particularly limited, and may be any one of, for example, a circular shape, an oval shape, an irregular shape (for example, a Y shape, an X shape, an I shape, an R shape) or a hollow shape. Also good. The tow constituting fibers are used in the form of tows (fiber bundles) formed by bundling, for example, about 1,000 to 1,000,000, preferably about 2,000 to 1,000,000 single fibers. can do. The fiber bundle is preferably formed by bundling about 1,000 to 1,000,000 continuous fibers.
Cellulose diacetate tow bales that can be suitably used in the present invention are commercially available from Celanese and Daicel Chemical Industries. Cellulose diacetate tow bale has a density of about 0.5 g / cm ³ and a total weight of 400-600 kg. From this bale, the tow is peeled off and spread into a wide band so as to have a desired size and bulk. The opening width of the tow is arbitrary, and can be, for example, a width of 50 to 2000 mm, preferably about 50 to 300 mm, which is the width of the product absorber. Moreover, the density of an absorber can be adjusted by adjusting the degree of tow opening.

Preferably, as shown in FIG. 3, superabsorbent polymer particles 54, 54. It is desirable that at least in the body fluid receiving region, the superabsorbent polymer particles (SAP particles) are dispersed substantially throughout the thickness direction with respect to the aggregate of continuous fibers 52, 52. The state of being substantially dispersed throughout the thickness direction is conceptually shown as an enlarged view of the main part of FIG.
If there is no SAP particle in the upper part, the lower part, and the middle part of the absorber 56, or if there is very little, it cannot be said that the "absorbed throughout the thickness direction". Therefore, “distributed throughout the thickness direction” means “distributed unevenly in the upper, lower, and / or middle portions of the continuous fiber aggregate in addition to the form“ uniformly ”distributed throughout the thickness direction. However, it is still included in the form of being dispersed in the upper, lower and middle portions. Further, a form in which some SAP particles remain on the surface of the continuous fibers 52, 52... Without entering the aggregate, and some SAP particles pass through the aggregate of continuous fibers 52, 52. The form on the covering sheet 58 and the form on the holding sheet 80 as will be described later are not excluded.

(Superabsorbent polymer particles)
In the form using the superabsorbent polymer 54, the superabsorbent polymer particle 54 includes “powder” in addition to “particle”. As the particle diameter of the superabsorbent polymer particles 54, those used for this type of absorbent article can be used as they are, and those having a particle size of 1000 μm or less, particularly 150 to 400 μm are desirable. The material of the superabsorbent polymer particles 54 can be used without any particular limitation, but those having a water absorption of 50 g / g or more are suitable. Examples of the superabsorbent polymer particles 54 include starch-based, cellulose-based and synthetic polymer-based polymers, such as starch-acrylic acid (salt) graft copolymer, saponified starch-acrylonitrile copolymer, and sodium carboxymethylcellulose. A cross-linked product or an acrylic acid (salt) polymer can be used. The shape of the superabsorbent polymer particles 54 is preferably a granular material that is usually used, but other shapes can also be used.
As the superabsorbent polymer particles 54, those having a water absorption speed of 40 seconds or less are preferably used. When the water absorption speed exceeds 40 seconds, so-called reversion in which the body fluid supplied into the absorber 56 returns to the outside of the absorber 56 is likely to occur.
Moreover, as the superabsorbent polymer particles 54, those having a gel strength of 1000 Pa or more are preferably used. Thereby, even if it is a case where it is set as the bulky absorber 56, the stickiness after a bodily fluid absorption can be suppressed effectively.
The basis weight of the superabsorbent polymer particles 54 can be appropriately determined according to the amount of absorption required for the use of the absorber 56. Therefore, although it cannot be said unconditionally, it can be set to 50 to 350 g / m ² . By setting the basis weight of the polymer to 50 g / m ² or less, it is possible to prevent the lightening effect from being hardly exhibited by adopting the synthetic continuous fiber due to the weight of the polymer. If it exceeds 350 g / m ² , not only will the effect be saturated, but an excessively high superabsorbent polymer particle 54 will give a sense of incongruity.
If necessary, the superabsorbent polymer particles 54 can adjust the spray density or spray amount in the plane direction of the absorber 56. For example, the body fluid excretion site can be applied in a larger amount than other sites. When gender differences are taken into account, men can increase the front spray density (amount), while women can increase the center spray density (amount). In addition, a portion where no polymer exists locally (for example, in a spot shape) in the planar direction of the absorber 56 can also be provided.
If necessary, as the superabsorbent polymer particles 54, a plurality of particles having different particle size distributions are prepared, sequentially supplied in the thickness direction, those having a small particle size distribution on the lower side in the absorber 56, and particles having a large particle size distribution on the upper side. Things can be distributed.
The ratio between the superabsorbent polymer particles 54 and the continuous fibers determines the absorption characteristics. As a weight ratio in a planar area of 5 cm × 5 cm in the region directly receiving the body fluid in the absorbent body 56, it is desirable that the superabsorbent polymer particle / continuous fiber weight is 1 to 14, particularly 2 to 9.

(Absorber size / weight)
On the other hand, the size of the absorber 56 is preferably such that the planar projection area is 400 cm ² or more and the thickness is 1 to 10 mm, particularly 1 to 5 mm. When the size of the absorbent body 56 is within this range, it is extremely advantageous in improving the resilience without increasing the weight, thickness, and cost. The weight of the absorber 56 is preferably 35 g or less, particularly 10 to 30 g. When the weight of the absorber 56 is within this range, the advantage of not using a dedicated member becomes particularly significant.

(Compressive properties of absorber)
The compression resilience RC of the absorbent body 56 is preferably 40 to 60%, particularly 50 to 60%. Thereby, sufficient restoring property can be exhibited with the absorber itself.
Furthermore, it is preferable that the compression energy WC of the absorbent body 56 is 4.0 to 10.0 gf · cm / cm ² , since it can be compressed compactly to the same level as before or during packaging.
These compression characteristics can be adjusted by adjusting the fiber density of the aggregate of continuous fibers by opening or the like, selecting the fiber material, selecting the type of binder such as a plasticizer, adjusting the degree of processing, or a combination thereof. .
Here, the compression energy (WC) is an energy consumption amount when pressing the center part of the test piece cut to a length of 200 mm and a width of 50 mm up to 50 g.
This compression energy can be measured by a handy compression tester (KES-G5, manufactured by Kato Tech). The measurement conditions in the case of this testing machine are: SENS: 2, force meter type: 1 kg, SPEED RANGE: STD, pressure area: 2 cm ² , take-in interval: 0.1 (standard), STROKE SET: 5.0 The upper limit load is 50 gf / cm ² .
On the other hand, the compression resilience (RC) is a parameter representing the recoverability when the fiber is compressed. Therefore, if the recoverability is good, the compression resilience increases. This compression resilience can be measured with a handy compression tester (KES-G5, manufactured by Kato Tech). The measurement conditions for this tester are the same as for the compression energy.

(Enveloping sheet)
When the covering sheet 58 is used, as the material, tissue paper, particularly crepe paper, non-woven fabric, polylaminated non-woven fabric, a sheet with small holes, or the like can be used. However, it is desirable that the superabsorbent polymer particles be a sheet that does not escape. When a nonwoven fabric is used instead of the crepe paper, a hydrophilic SMMS (spunbond / meltblown / meltblown / spunbond) nonwoven fabric is particularly suitable, and polypropylene, polyethylene / polypropylene, etc. can be used as the material. The basis weight is preferably 5 to 40 g / m ² , particularly 10 to 30 g / m ² .
As shown in FIG. 3, the covering sheet 58 wraps only the back and side surfaces of the layer of the continuous fibers 52, 52... And the superabsorbent polymer particles 54, 54. It may be covered. Although not shown, only the upper and side surfaces of the absorbent body 56 are covered with crepe paper or nonwoven fabric, and the lower surface is covered with a body fluid-impermeable sheet such as polyethylene, and the upper surface of the absorbent body 56 is covered with crepe paper or nonwoven fabric. For example, the lower surface may be covered with a body fluid impermeable sheet such as polyethylene (each of these materials becomes a component of the covering sheet). If necessary, the aggregate of continuous fibers 52, 52... And the layer of superabsorbent polymer particles 54, 54... May be sandwiched between two upper and lower sheets or disposed only on the lower surface. This is not a desirable form because it is difficult to prevent the movement of particles.

(Holding sheet)
In the case where the holding sheet 80 is provided, the superabsorbent polymer particles 54 can be interposed between the holding sheet 80 and the absorbent body 56 by spraying or the like. The superabsorbent polymer particles 54 may pass through the aggregate of continuous fibers 52 at the time of supply to the aggregate of continuous fibers 52 or in a subsequent process, or in a distribution process until use by a consumer. The unevenness of the superabsorbent polymer particles that have passed through the aggregate of continuous fibers gives a sense of incongruity when touched by the hand when the consumer uses it. Therefore, it is also a preferable form that a holding sheet 80 having a holding performance of the superabsorbent polymer 54 is interposed between the absorbent body 56 and the covering sheet 58. The holding sheet 80 reinforces the stiffness that is not sufficient only by the covering sheet 58 such as tissue paper (crepe paper), and reduces or prevents a sense of incongruity when touched by the hand when the consumer uses it.
The material of the holding sheet 80 is not particularly limited as long as it has a holding performance of the superabsorbent polymer 54. Specifically, for example, non-woven fabric, crimped pulp, low-absorbency cotton fiber (for example, non-degreased cotton fiber, degreased cotton fiber, rayon fiber treated with a water repellent or a hydrophobizing agent, etc.). ), Polyethylene fiber, polyester fiber, acrylic fiber, polypropylene fiber, silk, cotton, hemp, nylon, polyurethane, acetate fiber and the like.
If the holding sheet 80 and the nonwoven fabric, its holding sheet 80, the compression energy 0.01~10.00gfcm / cm ² based on KES test, preferably, at 0.01~1.00gfcm / cm ^2, and compressed The non-woven fabric has a resilience of 10 to 100%, preferably 70 to 100%.
The reason for providing the holding sheet 80 is to hold, for example, the superabsorbent polymer 54 that has fallen down (dropped out) from the absorbent body 56 as described above. Therefore, since the superabsorbent polymer particles 54 that have come out come into contact with the user via the covering sheet 58 and the holding sheet 80, there is no possibility of being transmitted to the user as a sense of incongruity. In particular, when the nonwoven fabric has the above-described compression energy and compression resilience, its function is sufficiently exhibited.
Further, since the superabsorbent polymer 54 that has slipped out is held by the holding sheet 60 and does not move on the covering sheet 58, there is no possibility of uneven distribution of absorption capacity. In particular, in order to prevent the superabsorbent polymer particles 54 from moving on the holding sheet 80, an adhesive hot melt adhesive or the like can be applied on the holding sheet 80 in advance. Alternatively, the upper surface of the holding sheet 80 (surface toward the use surface side) may be a rough surface to prevent the superabsorbent polymer particles 54 from moving on the holding sheet 80. Examples of the roughening or fluffing means for this purpose include a non-net surface that is not a net surface during the production of the nonwoven fabric, a marble process, a needle punch process, a brushing process, and the like.
The holding sheet 80 may be provided only below the absorber 56 as shown in FIG. 3 or the like, or may be wound up and extended to the upper surface of the absorber 56 through the side surface of the absorber 56 (not shown). . It is also possible to use a plurality of holding sheets 80 in a stacked manner.
The above example is an example in which the holding sheet 58 is provided between the absorber 56 and the back side portion of the covering sheet 58, but the holding sheet may be on the back side from the covering sheet (the form is shown in the figure). In short, if a holding sheet is provided on the back side with respect to the absorbent body 56, it is possible to reduce or not cause a crisp discomfort when touching from the back side of the product.

(Embossing)
Although not shown in the drawings, a recess E by embossing may be formed in the thickness direction from the surface side of the top sheet 30. In this case, the embossed recess E is formed only on the top sheet 30, the embossed recess E is formed on both the top sheet 30 and the intermediate sheet 40, or the thickness of the absorber 56 is increased from the surface side of the top sheet 30. A recess by embossing can be formed so as to reach a part or almost the entire length. In order to form the recesses E by embossing on both the top sheet 30 and the intermediate sheet 40, the intermediate sheet 40 has a basis weight of 10 to 80 g / m ² , a thickness of 0.2 to 5 mm, and the top sheet 30 It is desirable that the basis weight is in the range of 10 to 40 g / m ² and the thickness is in the range of 0.2 to 5 mm in that embossing can be sufficiently performed under the condition that does not impair liquid permeability.
Moreover, you may form the recessed part by embossing only in the intermediate sheet 40, without forming a recessed part in the top sheet 30, and also emboss only in the absorption element 56, without forming a recessed part in the top sheet 30 and the intermediate sheet 40. In addition, the embossed recess may be formed only in the absorbent body 58 without forming the recess in the top sheet 30, the intermediate sheet 40, and the covering sheet 58.
The recess E has an effect of inducing and diffusing body fluid in the direction in which the recess E extends. Therefore, when the recesses E are substantially continuous in a groove shape (including the case where a plurality of recesses are arranged at intervals and form a single groove), the body fluid reaches the absorber before reaching the absorber. It becomes diffused along the recess E, so that a wider part of the absorber can be used for absorption. Therefore, the absorbent capacity of the entire product is increased, and the absorbent article is less likely to cause side leakage or reversal due to insufficient absorbent capacity.
On the other hand, the absorbent body 56 made of continuous fibers is likely to be less rigid than the conventional pulp material, but it is preferable to form a recess by embossing in the absorbent body 56 because the rigidity can be increased. Although not shown, in order to increase the rigidity of the absorbent element 50, it is also a preferred form to form a concave portion by embossing in the thickness direction from the back surface side (the side opposite to the top sheet 30 side) of the absorbent body 56. In order to form the recess on the back surface side, embossing is performed integrally so as to reach the absorber 56 from the back surface side of the holding sheet 80, the covering sheet 58, the body fluid impermeable sheet 70 or the exterior sheet 12. Can do. Moreover, it is preferable to form such a concave portion on the back surface side together with the concave portion E on the front surface side, but it is also possible to form only the concave portion on the back surface side without forming the concave portion E on the front surface side. When the concave portions are provided on both the front and back sides, the shape of the concave portions may be common to the front and back sides, or may be different from each other.
The embossed recess has the effect of inducing and diffusing body fluid in the extending direction. It also has the effect of increasing rigidity. Therefore, it is desirable to determine the shape of the embossed recess in consideration of these effects. For example, the recesses are substantially continuous in the shape of a groove (including the case where a plurality of recesses are arranged in a row and form a single groove), and the plurality of recesses are arranged in a dotted pattern at intervals. It may be. In addition, as the planar pattern, groove-shaped or dot-shaped concave portions are arranged in the longitudinal direction, the width direction, a lattice shape combining these, a zigzag shape (zigzag shape) reciprocating in the width direction, or irregularly arranged. Forms can be taken. Furthermore, appropriate forms such as a pin shape, a Mt. Fuji shape, and a bellows shape can be adopted.

(Other)
In addition, although not shown in figure, about fixed parts other than the fixed part mentioned above, it can carry out using solid, beads, spiral application | coating, etc., such as a hot-melt-adhesive.

(Production method)
Although not shown in the drawings, on the continuous belt-shaped outer layer 12S, a waist elastic elastic member 12C in which an adhesive BA is applied to at least a contact portion with the inner layer 12H and a contact portion with the outer layer 12S is disposed. The continuous belt-shaped inner layer 12H is overlaid and pressure-bonded thereon, and then the leg openings LO are punched to form the continuous belt-shaped exterior sheet 12.
In addition to or instead of application of the adhesive BA to the waist elastic member 12C, the adhesive is continuously or intermittently applied along the contact portion of the outer layer 12S and the inner layer 12H with the waist elastic member 12C. It may be applied.
Further, as shown in FIGS. 9 and 10, when the waist elastic elastic member 12C is cut by embossing or the like in a portion overlapping with the absorbing portion 20, and the contraction force is partially lost or weakened, the inner layer 12H is pressed. Later, a predetermined part is cut. In this case, the cut portion and the non-cut portion are different depending on whether or not the waist elastic stretch member 12C is cut, but both become small adhesive portions, and the waist elastic stretch member 12C is applied via the adhesive BA applied to the outer surface thereof. In addition, the portion SP is bonded to both the outer layer 12S and the inner layer 12H, and a portion SP having no adhesive is provided between the outer layer 12S and the inner layer 21H between the bonded portions of the elastic elastic member 12C.
Next, the adhesive BZ is applied to the absorbent portion installation position on the continuous belt-shaped exterior sheet 12, and the separately manufactured absorbent portion 20 is placed thereon and bonded. Next, the adhesive BY is applied on the front and rear end portions of the exterior sheet 12, and after the trunk end elastic elastic member 12D having the adhesive applied on the upper surface side is disposed thereon, the exterior sheet 12 is disposed. The front and rear end portions are folded and fixed on the front end portion and the rear end portion of the absorbing portion 20, respectively. Next, after the waistline portion 12T of the exterior sheet 12 is cut off at the side portions and separated into individual pieces, it is folded back and forth so that the abdomen F and the back B overlap, and the abdomen F and back of the exterior sheet 12 are folded. The joining regions 12A on both sides of B are joined by heat fusion or the like. Thus, a pants-type disposable diaper having a structure shown in FIG. 1 and having a trunk opening WO and a pair of leg openings LO is obtained.
The method for applying the adhesive to the waist elastic member 12C is not particularly limited as long as the adhesive can be applied to at least the contact portion with the inner layer 12H and the contact portion with the outer layer 12S, but at least in the entire circumferential direction. What can apply | coat the said adhesive agent is preferable. As a coating method, non-contact coating such as summit spray, spiral spray, and control seam can be used in addition to contact coating, and coating by a Nordson company's Surerup nozzle is particularly preferable. As schematically shown in FIG. 8, this coating method stretches an elongated elastic elastic member 12C in the air, and applies adhesive BA from above along the longitudinal direction of the elastic elastic member 12C. Spiral coating is performed with a reciprocating width of 12C or more, and the adhesive BA that protrudes on both sides of the elastic elastic member 12C is wound around the lower surface side of the elastic elastic member 12C as indicated by arrows in FIG. That's it. According to this method, the adhesive BA is applied to at least the entire circumferential direction of the elastic elastic member 12C, and intermittently applied in the longitudinal direction of the elastic elastic member 12C as can be seen from FIG. The Therefore, it is possible to reliably adhere to both the outer layer 12S and the inner layer 12H with a very small amount of adhesive used.

  The present invention is suitable for manufacturing absorbent bodies in absorbent articles such as paper diapers, sanitary napkins, incontinence pads, and absorbent pads used in combination with diaper covers.

It is a perspective view of a pants-type diaper. It is a body side top view of a diaper of a deployment state. FIG. 3 is a cross-sectional view taken along line III-III in FIG. 2. It is an outer surface side top view of a diaper of a deployment state. FIG. 5 is a schematic cross-sectional view taken along line VV in FIG. 2. It is an outer surface side top view showing the adhesive application part. It is a principal part expanded sectional view. BRIEF DESCRIPTION OF THE DRAWINGS It is (a) top view and (b) sectional drawing which show an adhesive agent coating system roughly. It is a perspective view of a pants-type diaper. It is an outer surface side top view of a diaper of a deployment state. It is an outer surface side top view of a diaper of a deployment state. FIG. 12 is a schematic cross-sectional view taken along line XI-XI in FIG. 11.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Pants type disposable diaper, 10A ... Tape-type disposable diaper, 12 ... Exterior sheet, 12A ... Joining region, 12S ... Outer layer, 12H ... Inner layer, 12C ... Trunk elastic elastic member, 12D ... Trunk end elastic elastic member, BA, BS, BY, BZ ... adhesive, 12P ... permeability improving part, 20 ... absorbent part, 30 ... top sheet, 40 ... intermediate sheet, 50 ... absorbent element, 52 ... continuous fiber, 53 ... body fluid diffusion layer, 52X ... Veil, 52Y ... Tow, 52Z ... Aggregation of continuous fibers, 54 ... Superabsorbent polymer particles, 56 ... Absorber, 56A ... First continuous fiber layer, 56B ... Second continuous fiber layer, 58 ... Covering Sheet 60, 60A ... Barrier cuff, 64 ... Barrier sheet, 70 ... Body fluid impermeable sheet, 72 ... Second body fluid impermeable sheet, 80 ... Holding sheet.

Claims (8)

A breathable outer layer, a breathable inner layer, and an exterior sheet having a plurality of elongated elastic elastic members interposed between them, spaced apart from each other and fixed in an expanded state, In the absorbent article provided with the absorption part that absorbs and holds the object provided on the body side of the exterior sheet,
In the exterior sheet, the elastic elastic member is bonded to both the outer layer and the inner layer via an adhesive, and a small portion having no adhesive between the outer layer and the inner layer between the bonded portions of the elastic elastic member. With an adhesive part,
An absorbent article characterized by the above.   The absorbent article according to claim 1, wherein the elastic stretchable member in the small adhesive portion is coated with the adhesive at least in the entire circumferential direction.   The exterior sheet has an abdominal part and a dorsal part that cover the user's abdomen and dorsal side, and the elastic stretchable member extends in the width direction within a predetermined range in the front-rear direction of each of the abdomen and dorsal parts. The absorbent article according to claim 1, wherein a plurality of the elastic stretch members are arranged as the small adhesive portion along the front and rear sides of the elastic stretch member.   A part of the small adhesive portion has an auxiliary adhesive intermittently applied along the extending direction of the elastic elastic member between the outer layer and the inner layer between the adhesive portions of the elastic elastic member. The absorbent article according to any one of claims 1 to 3, wherein the outer layer and the inner layer are bonded by an adhesive.   The absorptive article according to any one of claims 1 to 4 with which said exterior sheet is provided with a layer-saving part which does not have said elastic elastic member and at least one of an outside layer and an inside layer.   The elastic elastic member in the small adhesive portion has a thickness of 1000 dtex or less and is provided at an interval of 1 to 20 mm, and adhesion for bonding the elastic elastic member to both the outer layer and the inner layer The absorbent article according to any one of claims 1 to 5, wherein the agent is applied in an amount of 0.01 to 0.04 g / m per unit length of the elastic elastic member. The adhesive is applied to at least the contact portion with the inner layer and the contact portion with the outer layer of the plurality of elongated elastic stretch members, and the plurality of elastic stretch members coated with these adhesives are spaced apart from each other. A step of producing an exterior sheet by sandwiching and adhering between a breathable outer layer and a breathable inner layer in an open arrangement and extending in the longitudinal direction;
A step of manufacturing an absorption part for absorbing and holding an object;
Attaching the absorber to a predetermined part on the exterior sheet;
The manufacturing method of the absorbent article characterized by including.   In applying the adhesive to the elastic elastic member, the elastic elastic member is stretched in the air, and the adhesive is applied along the longitudinal direction of the elastic elastic member from above with a reciprocating width equal to or greater than the circumferential length of the elastic elastic member. The said adhesive agent is apply | coated to at least the whole circumferential direction of the said elastic elastic member by spirally apply | coating and winding the adhesive agent which protrudes on both sides of an elastic elastic member to the lower surface side of an elastic elastic member. Manufacturing method for absorbent articles.

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