WO2018030482A1

WO2018030482A1 - Absorbent article and method for producing absorbent article

Info

Publication number: WO2018030482A1
Application number: PCT/JP2017/028979
Authority: WO
Inventors: 山田　菊夫
Original assignee: 山田　菊夫
Priority date: 2016-08-10
Filing date: 2017-08-09
Publication date: 2018-02-15
Also published as: JPWO2018030482A1

Abstract

The present invention provides an absorbent article that is easy to wear for a user and that prevents leakage of bodily fluids. The absorbent article includes: a fitting part that is formed so as to be capable of being fitted to the hip of a user; and an absorbing body including an absorbent core that absorbs the bodily fluids of the user and holds the absorbed bodily fluids, a top sheet disposed on a skin-facing side of the absorbent core, and a back sheet disposed on a non-skin-facing side of the absorbent core. The fitting part is formed of a stretchable member that is formed by layering a plurality of fiber sheets and stretchable elastic members and has an overlapping area overlapping the absorbing body and a non-overlapping area other than the overlapping area. The absorbing body has a first joining part and a second joining part to be joined to the fitting part at side edges thereof in the direction in which the fitting part is stretched, and an idle part that is disposed between the absorbent core and the fitting part and is joined to the fitting part via the first joining part and the second joining part. When the fitting part is stretched by a predetermined amount, the idle part becomes taut as a result of the stretching of the fitting part, and when the fitting part is contracted, the idle part becomes slack as a result of the contraction of the fitting part.

Description

Absorbent article and method of manufacturing absorbent article

The present invention relates to an absorbent article and a method of manufacturing the absorbent article.

BACKGROUND Conventionally, absorbent articles such as disposable diapers, incontinence pads, sanitary napkins and the like are widely used. Among these absorbent articles, mainly in disposable diapers, the pants type worn by the user and the wearing part are not cylindrical before the user wears, and when worn by the user There is a so-called tape type worn by the user after being stopped by a tape fastener or the like provided in the mounting portion.

The pants-type absorbent article is disclosed, for example, in Patent Document 1 shown below. According to the absorbent article disclosed in Patent Document 1, the pants-type absorbent article has a waist opening in which the waist of the user enters and a leg opening in which the legs of the user enter. A wearable body that can be worn on the waist of a person, and an exchange body that absorbs and holds a body fluid, and the exchangeable body is detachably provided to the wearable body. Further, in addition to the absorbent article disclosed in Patent Document 1, as a pants-type absorbent article existing before, an absorbent holding portion located in a wearing body and a crotch is integrally joined. There is also one.

JP 2003-175066 A

Generally, in the absorbent article disclosed in the above-mentioned Patent Document 1 and other absorbent articles which have been present before, an elastic member such as rubber is disposed on the wearing body, and the user who wears it When worn, it is often in close contact with a predetermined tightening strength at the waist to prevent it from falling off. However, the previously existing absorbent article is elastic in the area where the absorbent body holding part is integrally joined to the wearing body or the area where the exchange body is detachably attached to the wearing body. As no members are arranged, the wearable body does not stretch in this area. Therefore, since the wearing body expands and contracts is limited to a part other than the above-described region, there is a problem that the wearing body is hard to stretch as a whole, and it is difficult for the user to wear when wearing. In addition, in the case of the pants-type absorbent article which has existed for a long time, it is difficult to stretch the wearing body, so it is necessary to have a large number of size developments and there is a problem that a large manufacturing cost is required.

On the other hand, when attaching or joining the exchange body or the absorbent body holding part to the wearing body, by attaching or joining the exchange body or the absorbent body holding part in a state where the wearing body is stretched in advance, It can be considered that the growth of the However, in this case, when the elastic member is contracted as much as possible by the elastic force after attaching or joining the exchange body or the absorber holding portion to the wearing body, Another problem has arisen that it is easy for the user to lean on the part attached or joined to the wearing body. If wrinkles come in this way, there is a risk that urine or feces may leak from the portion where the wrinkles are formed to the outside of the wearing body after adding for use in a state worn by the user, as an absorbent article Sometimes it doesn't work.

An object of the present invention is to provide an absorbent article and a method of manufacturing the absorbent article which are easy for the user to wear and which do not leak fluid.

An absorbent article according to a first aspect of the present invention comprises an attachment portion formed so as to be attachable to the waist of a user, and an absorbent core which absorbs the fluid of the user and holds the absorbed fluid. An absorbent article comprising: a top sheet disposed on the skin surface side of the absorbent core; and an absorbent body having a back sheet disposed on the non-skin surface side of the absorbent core, wherein the mounting portion is A stretchable member formed by laminating a plurality of fibrous sheets and an elastic member having stretchability, and having an overlapping region overlapping with the absorbent body and a non-overlapping region other than the overlapping region, the absorption The body is disposed between a first joint and a second joint joined to the mounting portion, a side edge in a direction in which the mounting portion stretches, and the absorbent core and the mounting portion. The first joint portion and the second joint portion It is joined to the attachment portion, and when the attachment portion is stretched by a predetermined amount, it is pulled in accordance with the extension of the attachment portion, and when the attachment portion is contracted, slack is caused by the contraction of the attachment portion. An absorbent article, comprising: a play portion in a raised state.

Further, in the method of manufacturing an absorbent article according to the second aspect of the present invention, there is provided an attachment portion formed so as to be attachable to the waist of a user, and the liquid absorbed by the body fluid of the user and absorbed. A method of manufacturing an absorbent article comprising: an absorbent core to be held, a top sheet disposed on the skin side of the absorbent core, and an absorbent body having a back sheet disposed on the non-skin side of the absorbent core A step of transporting the stretchable elongated body in a stretched state in tension, a step of applying an adhesive to the stretched elongated body, and a part of the absorber A gist of the manufacturing method of an absorbent article is provided with a step of laminating on the stretched elongated body via the adhesive, and a step of cutting the elongated body on which the absorber is stacked at a predetermined position.

According to the present invention, since the mounting portion is formed using an elastic member having stretchability, the mounting portion can be greatly expanded and contracted as a whole. Further, according to the present invention, since the play portion is pulled or slackened along with the expansion and contraction of the mounting portion, the expansion and contraction of the mounting portion can be inhibited even if an absorber that is not expanded and contracted is provided. Instead, it is possible to provide an absorbent article that is easy for the user to wear. In addition, since the position of the absorber can be prevented from changing by the play part, the absorber does not shift from the crotch of the user even when twisting or the like occurs in the absorbent article as when the user turns over. As a result, it is possible to maintain the state where it is placed at the proper place. Therefore, according to the present invention, it is possible to prevent the leakage of body fluid and the like regardless of the state of movement of the user.

In addition, according to the method of manufacturing an absorbent article according to the present invention, an absorbent article which is easy for the user to wear, does not leak body fluid even during wearing, and can not easily feel unpleasant can be easily manufactured, and the manufacturing efficiency Can also be greatly improved.

It is an outline view of an absorptive article concerning a 1st embodiment. It is an exploded view of the absorptive article concerning a 1st embodiment. It is an explanatory view for explaining operation of a shock absorbing member when a wearing part expands and contracts. It is an explanatory view for explaining the composition of an elastic member. It is an explanatory view for explaining the composition of an elastic member. It is an explanatory view for explaining the composition of an elastic member. It is an explanatory view for explaining the composition of an elastic member. It is an explanatory view for explaining the composition of an elastic member. It is explanatory drawing for demonstrating the relationship between the mounting part joined in the 1st-3rd junction part, and a buffer body. It is explanatory drawing for demonstrating the relationship of the absorber and buffer body joined in the 4th to 6th junction part. It is explanatory drawing for demonstrating the relationship of the absorber and buffer body joined in the 4th to 6th junction part. It is an explanatory view showing a manufacturing process of an absorptive article concerning a 1st embodiment. It is an outline view of an absorptive article concerning a 2nd embodiment. It is an explanatory view for explaining operation of a shock absorbing member when a wearing part expands and contracts. It is a top view showing composition of an absorber. It is explanatory drawing for demonstrating the relationship between the mounting part joined in the 1st-3rd junction part, and an absorber. It is explanatory drawing for demonstrating the relationship between the mounting part joined in the 1st-3rd junction part, and an absorber. It is an explanatory view showing composition of an absorber concerning a modification of a 2nd embodiment. It is explanatory drawing for demonstrating the relationship between the mounting part joined in the 1st-3rd junction part, and an absorber. It is explanatory drawing for demonstrating the relationship between the mounting part joined in the 1st-3rd junction part, and an absorber. It is explanatory drawing showing the manufacturing process of the absorbent article which concerns on 2nd Embodiment. It is an explanatory view for explaining a modification of the 1st to 3rd joined part in an absorptive article concerning a 2nd embodiment. It is an explanatory view for explaining a modification of a wearing part in an absorptive article concerning a 2nd embodiment. It is an explanatory view for explaining composition of an absorptive article concerning other embodiments of the present invention. It is an outline view of an absorptive article concerning a 3rd embodiment. It is explanatory drawing for demonstrating the relationship between the mounting part joined in the 1st-3rd junction part, and an absorber. It is explanatory drawing for demonstrating the relationship between the mounting part joined in the 1st-3rd junction part, and an absorber. It is explanatory drawing showing the manufacturing process of the absorbent article which concerns on 3rd Embodiment.

First Embodiment
An absorbent article according to a first embodiment of the present invention will be described based on the drawings. In the present embodiment, although an example applied to a pants-type absorbent article is described as one example of the absorbent article according to the present invention, the absorbent article according to the present invention is a pants-type absorbent For example, the present invention is not limited to the above-described sex articles, and can be applied to, for example, tape-type absorbent articles and other types of absorbent articles.

[Appearance Configuration of Absorbent Article 1]
First, the appearance configuration of the absorbent article 1 according to the present embodiment will be described. As shown in FIGS. 1 to 3, the absorbent article 1 according to the present embodiment is detachably attached to the mounting portion 2 formed so as to be attachable to the user's waist, the buffer 3 and the buffer 3. It is provided so as to be attachable, and comprises an absorbent body 4 which absorbs the body fluid of the user and holds the absorbed body fluid. In the present specification, various fluids such as urine, sweat, blood and lymph can be considered as "body fluid", but in the following description, urine is mainly assumed.

[Configuration of Mounting Unit 2]
The mounting portion 2 is an article formed so as to be mounted on the waist of the user, and in the absorbent article 1 according to the present embodiment, on the non-skin surface side opposite to the skin surface of the absorber 4 described later. It is joined to the absorber 4 via a buffer 3 so as to be positioned. The mounting unit 2 includes a front body 5 and a rear body 6. One end 5a of the front body 5 and one end 6a of the rear body 6 are joined by any method such as sewing, heat sealing, adhesion (adhesion using an adhesive such as hot melt), ultrasonic bonding or the like. Further, the other end 5b of the front body 5 and the other end 6b of the rear body 6 are also joined by any method such as sewing, heat sealing, adhesion, ultrasonic bonding or the like. As described above, in the mounting portion 2, the front body 5 and the back body 6 are joined, and the waist opening 7 is formed so as to open upward. The waist opening 7 has a size that allows the user's waist to enter inside, and when worn, the user's leg is made to enter from the waist opening 7 to be positioned around the user's waist. It is designed to fit around the user's waist with an arbitrary tightening strength. In the present embodiment, although the example in which the mounting portion 2 includes the front body 5 and the back body 6 is described, the present invention is not limited to this shape. Alternatively, the mounting portion 2 may be formed by forming a tubular base sheet and bonding a part of the base sheet, or the mounting portion 2 may be formed by another method. In the following, the direction in which the bonding line extends (the x direction in FIG. 1) that occurs when the front body 5 and the back body 6 are joined is referred to as the “longitudinal direction”.

The mounting portion 2 is classified into three regions, such as a waist 11 at the top in the vertical direction, a waist 12 at the middle in the vertical direction, and a leg top 13 at the bottom in the vertical direction. Here, when the mounting portion 2 expands and contracts, the elastic strength of the elastic member 21 included in the mounting portion 2 causes the expansion and contraction strength to be generated in each region of the waist portion 11, the lower waist 12 and the upper leg 13. It is preferable that the stretch strength of the upper portion 13 be formed to be different from the stretch strength of the other waist portions 11 and the lower waist portion 12. As a more preferable aspect, the first aspect is an aspect in which the stretch strength of the upper leg 13 is formed to be stronger than the stretch strength of the waist 11 and the lower waist 12. Thus, in the first preferred embodiment, the absorbent article 1 can be easily fitted on the skin surface of the user as a whole. Therefore, according to the absorbent article 1 of the first aspect, it is possible to greatly reduce the appearance discomfort which the user tends to feel due to wearing the absorbent article 1, whereby the user can It is also possible to soften the sense of resistance which tends to feel excessively with respect to the wearing of the absorbent article 1, and to use the absorbent article 1 more positively.

The second preferred embodiment is an embodiment in which the stretch strength of the upper leg 13 is formed to be weaker than the stretch strength of the waist 11 and the lower waist 12. Thus, in the second preferred embodiment, when the user wears the absorbent article 1, a predetermined space can be formed between the skin surface of the user and the absorbent article 1, and this space The user's stool can be stored. Therefore, in the second preferred embodiment described above, the user's stool is stored in the space formed between the absorbent article 1 and the skin surface of the user until the absorbent article 1 is replaced. To prevent leakage.

The mounting portion 2 has an overlapping area 14 and a non-overlapping area 15. The overlapping area 14 in the present embodiment is an area where the mounting portion 2 and the first buffer 3a as the buffer 3 to be described later overlap when the absorbent article 1 is viewed from the front or the back, And the area | region where the mounting part 2 and the 2nd buffer 3b which is the buffer 3 mentioned later overlap, and is arrange | positioned is said. Further, the non-overlap area 15 means an area other than the overlap area 14. That is, the mounting portion 2 is formed in a tubular shape as described later, and the first buffer 3 a and the second buffer 3 b are disposed on the inner surface thereof. An area in which the body 3a and the second buffer 3b are disposed is an overlapping area 14, and an area in which the first buffer 3a and the second buffer 3b are not disposed is a non-overlap area 15.

The mounting portion 2 is formed of a stretchable member that is entirely stretchable. Here, “generally stretchable” refers to the circumferential direction of the mounting portion 2 (that is, the direction orthogonal to the above-described longitudinal direction, in other words, the direction in which the waist opening 7 of the mounting portion 2 in the absorbent article 1 is expanded. ) Means that expansion and contraction are possible in any of the overlapping area 14 and the non-overlapping area 15 described above. That is, in the overlapping region 14 of the absorbent article 1 according to the present embodiment, the mounting portion 2 and the first buffer 3a and the second buffer 3b are joined by a point-like or linear junction. (This junction will also be described later.) Therefore, even if the mounting portion 2 and the first buffer 3a and the second buffer 3b overlap each other when the absorbent article 1 is viewed from the front or back. The mounting portion 2 can be freely expanded and contracted.

The mounting portion 2 is formed of a stretchable member formed by laminating a plurality of fiber sheets and a stretchable elastic member 21. Here, "fiber sheet" means a member formed in a sheet shape using synthetic fibers or natural fibers, such as various pulp materials including nonwoven fabric, paper, etc., elastic films, etc. Various sheet materials may be used.

Further, as the stretchable member, for example, an elastic member 21 having stretchability such as various rubber materials is used. The shape of the stretchable member is not particularly limited. For example, a string-like, thread-like, or net-like stretchable member is used.

Further, as described above, the stretchable member is formed by laminating the plurality of fiber sheets and the elastic member 21. A mode of laminating the non-woven fabric and the elastic member 21 sequentially from the outer surface to the inner surface of the mounting portion 2 as a laminating mode of the stretchable member, an embodiment of sequentially laminating the non-woven fabric, the elastic member 21 and the non-woven fabric There may be mentioned an aspect in which paper and elastic member 21 are sequentially laminated, an aspect in which nonwoven fabric, paper, elastic member 21 and nonwoven fabric are sequentially laminated, an aspect in which elastic film and elastic member 21 are sequentially laminated, The invention is not limited to the above, and may be another lamination mode.

Next, the structure of the fabric material which becomes an elastic member used for the mounting part 2 is demonstrated in detail. As shown in FIG. 4, the dough material is continuous in the x direction, which is the first direction. The code | symbol 21 in FIG. 4 shows the elastic member 21 provided in the inside of cloth | dough, and a mode that the uneven surface was formed of many elastic members 21 is shown. A large number of ridges 22 are formed by this uneven surface, as shown in FIG.

As shown in FIG. 7, the fabric comprises a first fibrous sheet 23 having breathability, a second fibrous sheet 24 having breathability like the first fibrous sheet 23, Of the first fibrous sheet 23 and the second fibrous sheet 24, and the first fibrous sheet 23 and the second fibrous sheet 24. It is formed of a laminated sheet 26 formed by laminating the fiber material 25. As described above, the laminated sheet 26 forms a composite layer in which the air-permeable fiber layer (air-permeable fiber layer) and the liquid diffusive fiber layer (liquid-diffusing fiber layer) are laminated. The composite layer comprises a first air-permeable fiber layer, a liquid diffusive fiber layer adjacent to the first air-permeable fiber layer, and a second air-permeable fiber layer adjacent to the liquid diffusive fiber layer. It is formed of a layer. Reference numeral 27 in FIG. 7 denotes an adhesive layer.

The second fibrous sheet 24 and the fiber material 25 are partially joined via the elastic member 21. The bonding of the first fibrous sheet 23 and the fiber material 25 is also preferably partial bonding. Bonding, heat fusion, ultrasonic bonding and the like are used as bonding means for partially bonding these, but bonding is preferable from the viewpoint of ease of operation.

In adhesion as a bonding means, it is preferable to use a hot melt adhesive as the adhesive. Hereinafter, the aspect of the elastic member of the absorbent article 1 which concerns on this Embodiment is demonstrated by making into an example the case where a hot-melt adhesive is used as an adhesive agent.

In order to partially bond the first fibrous sheet 23 and the fiber material 25 using a hot melt adhesive, the fiber material 25 is partially applied with a hot melt adhesive as shown in FIG. (Alternatively, the hot melt adhesive may be partially applied to the first fibrous sheet 23), and both are laminated and joined together. At this time, a non-adhesion portion where no adhesive is present is formed between the first fibrous sheet 23 and the fiber material 25, and a space is formed by the non-adhesion portion. Further, since the elastic member 21 intervenes between the second fibrous sheet 24 and the fibrous material 25, the second fibrous sheet 24 and the fibrous material 25 are joined at the location of the elastic member 21, Partial bonding of the second fibrous sheet 24 and the fibrous material 25 is performed. That is, as shown in FIG. 8, a hot melt adhesive is sprayed and applied to the peripheral surfaces of a large number of elastic members 21 arranged in parallel at predetermined intervals, and the elastic member 21 coated with this hot melt adhesive. Is placed between the surface of the fiber material 25 in the laminate of the first fibrous sheet 23 and the fiber material 25 and the second fibrous sheet 24, and the surface of the fiber material 25 in the laminate and The elastic member 21 is sandwiched between the two fibrous sheets 24 and laminated to be joined and integrated. Although not particularly shown in FIG. 8, the opposing surface of the second fibrous sheet 24 and the fiber material 25 in which the elastic member 21 does not exist is a non-adhesive portion, and a space is formed by the non-adhesive portion. It is done. In addition, the space formed by the non-adhered portion in the buttock portion 22 improves the functions of moisture transpiration in the dough (water-absorbing quick drying), heat dissipation, and moisture permeability.

As shown in FIG. 6, in the laminated sheet 26, the uneven surface is formed by the composite layer, and the ridge portion 22 is formed by the uneven surface. As shown in FIGS. 4 to 6, a ridge portion 22 is formed by the convex portion 29 and the concave portion 30 on the uneven surface, and by the convex portion 29 and the concave portion 30 continuing, a large number of ridge portions 22 are formed. Ru.

As a means for forming the ridge portion 22 composed of the convex portion 29 and the concave portion 30, the elastic member 21 is disposed inside the fabric as described above. As the elastic member 21, a linear elastic body 28 having stretchability is used, and is formed of a synthetic rubber based on urethane, silicone, butadiene, or styrene butadiene, natural rubber, or the like. Further, the elastic member 21 may be a combination of any of these synthetic rubbers or natural rubbers. Although a thread-like rubber is suitably used as the linear elastic body 28, the linear elastic body 28 may be any of a cylindrical shape, an elliptic cylindrical shape, a triangular cylindrical shape, a square cylindrical shape, and other polygonal cylindrical shapes. Further, the linear elastic body 28 may be one obtained by bundling or twisting a plurality of linear members. Hereinafter, an embodiment in the case of using the linear elastic body 28 as the elastic member 21 will be described.

As shown in FIGS. 4 and 5, the linear elastic members 28 are arranged in the same direction as the longitudinal direction of the laminated sheet 26 (the x direction in FIGS. 4 and 5), and the predetermined distance is The other linear elastic bodies 28 are disposed in parallel with one another. That is, a large number of linear elastic bodies 28 are arranged at intervals in the width direction of the laminated sheet 26 (y direction in FIGS. 4 and 5), and a large number of linear elastic bodies 28 are formed.

The linear elastic body 28 is provided between the second fibrous sheet 24 and the fibrous material 25 as shown in FIG. As the stretchable member of the absorbent article 1 according to the present invention, the number of linear elastic bodies 28 per unit area can be set arbitrarily. Therefore, the spacing between the linear elastic bodies 28 in the row of linear elastic bodies 28 can be set arbitrarily. A large number of ridges 22 are formed at predetermined intervals in the x direction in FIGS. 4 and 5. As described above, although the number of linear elastic bodies 28 per unit area can be set arbitrarily, if the number of linear elastic bodies 28 is increased to reduce the distance between the linear elastic bodies 28, The convex part 29 and the concave part 30 in the ridge part 22 can be formed in a uniform shape, and the shape can be maintained. As a result, there is no deformation of the buttocks 22, which is preferable from the viewpoint of increasing the softness of the fabric, the water evaporation, the heat dissipation and the moisture permeability. From such a point of view, it is preferable that the interval between the ridges 22, that is, the pitch interval between the protrusions 29 be 2.00 mm to 7.00 mm. It is more preferable that the pitch interval between the projections 29 be 3.00 mm to 6.25 mm. By narrowing the pitch interval between the convex portions 29, fine wrinkles can be made, so that the appearance becomes beautiful. In addition, since the contact area with one skin per skin is small, the feel is improved and the surface area is further increased, so the absorbability of sweat etc. is greatly improved. On the other hand, the elastic force of the linear elastic body 28 can be appropriately suppressed by widening the pitch interval between the convex portions 29, and the manufacturing cost can be reduced.

In addition, the linear elastic body 28 is in a contracted state by a restoring force, that is, in a non-tensioned state, and the longitudinal direction of the linear elastic body 28 in this non-tensioned state (longitudinal direction of the laminated sheet 26 in FIGS. That is, a large number of ridges 22 extending in the direction orthogonal to the x direction) (the width direction of laminated sheet 26 in FIGS. 4 and 5, ie, the y direction) is formed, and ridges 22 rows are patterned on laminated sheet 26 .

The linear elastic body 28 may be provided in the entire area inside the laminated sheet 26 or may be provided in a partial area. When the linear elastic body 28 is entirely provided in the inside of the laminated sheet 26, a uniform elastic force is imparted to the fabric, so the above-described fabric as in the absorbent article 1 according to the present embodiment. There is an advantage in that when using the device, the retention to the body becomes reliable and there is no risk of falling off.

An elastic force is applied to the laminated sheet 26 by the linear elastic body 28 disposed inside the laminated sheet 26. Therefore, when the cloth made of the laminated sheet 26 is pulled in the x direction in FIGS. 4 and 5, the cloth also expands and spreads by stretching the linear elastic body 28, and when this state is released, the linear elastic body 28 It shrinks due to restorative force, thereby returning the dough to its original state. As described above, since the fabric has stretchability, the fabric used for the absorbent article 1 according to the present embodiment has an excellent fit with respect to the body and can be free-sized.

In addition, two or more sheets of the lamination sheet 26 can also be laminated | stacked, and one or two sheets or more of the lamination sheet 26 and one sheet or two or more sheets of another sheet can also be laminated | stacked. .

The fabric used in the absorbent article 1 according to the present embodiment is useful as a material having excellent properties not found in the prior art. When this fabric is applied, it is not limited to those discarded in a single use, but also includes those used repeatedly within a short period of time depending on the use purpose and purpose, and several times in the case of those used repeatedly. It includes those that can withstand washing.

Each of the first fibrous sheet 23 and the second fibrous sheet 24 is preferably made of a material having air permeability and moisture permeability, and as such a fibrous material having air permeability and moisture permeability, As mentioned above, it is preferable to use a non-woven fabric.

Here, as the non-woven fabric, a known non-woven fabric generally used before can be used. That is, a known non-woven fabric having a fiber structure in which fibers are unidirectionally or randomly oriented and in which fibers are bonded by entanglement, fusion, or adhesion can be used. Examples of non-woven fiber materials include natural fibers such as plant fibers (cellulose polymers) and animal fibers (protein polymers); purified fibers such as lyocell and tencel; regenerated fibers such as rayon and viscose rayon; Fibers; synthetic fibers such as nylon and acrylic fibers; chemical fibers such as PP (polypropylene), PE (polyethylene), PET (polyethylene terephthalate) and the like, and one of them may be used alone. Alternatively, two or more of them may be used in combination. In addition, composite fibers may be used, and other materials may be included as needed.

The nonwoven fabric used for the first fibrous sheet 23 and the second fibrous sheet 24 can be appropriately selected according to the type and application of the product to which the fabric is applied. For example, in the case of the absorbent article 1 according to the present embodiment, the first fibrous sheet 23 or the second fibrous sheet 24 is used in a state in which the first fibrous sheet 23 or the second fibrous sheet 24 is in close contact with the user's body. In this case, it is preferable to use, as the first fibrous sheet 23 or the second fibrous sheet 24, a non-woven fabric of a material that can exhibit functions such as flexibility, touch, and sweat absorbability. On the other hand, in the case where the first fibrous sheet 23 or the second fibrous sheet 24 is used in a mode in which the first fibrous sheet 23 or the second fibrous sheet 24 is not in contact with the user's body and located on the surface side of the garment, functions different from the above, for example It is preferable to use a non-woven fabric capable of exhibiting waterproofness or the like as the first fibrous sheet 23 or the second fibrous sheet 24.

Examples of nonwoven fabric materials used for the first fibrous sheet 23 and the second fibrous sheet 24 include spunbonded nonwoven fabrics, thermal bonded nonwoven fabrics, spunlace nonwoven fabrics, dry nonwoven fabrics, wet nonwoven fabrics, meltblown nonwoven fabrics, chemically bonded nonwoven fabrics And needle-punched non-woven fabrics, stitch-bonded non-woven fabrics, steam-jet non-woven fabrics, etc., among which spun-bonded non-woven fabrics, thermal-bonded non-woven fabrics and spun-laced non-woven fabrics are preferred.

5 g / m ² to 60 g / m ² is preferable, and 7 g / m ² to 40 g / m ² is more preferable as the preferable coated amount of the non-woven fabric used for the first fibrous sheet 23 and the second fibrous sheet 24. The reason why the weight per unit area of the non-woven fabric is preferably in the above range is that if the weight per unit area is less than 5 g / m ² , the hot melt adhesive exudes on the surface of the non-woven fabric, for example, when a hot melt adhesive is applied. If the weight per unit area exceeds 60 g / m ² , the thickness of the product becomes large, the manufacturing efficiency is poor, and the packaging operation becomes troublesome. When the weight per unit area of the non-woven fabric is 7 g / m ² to 40 g / m ² , the bonding strength can be increased by combining the bonding method using a hot melt adhesive and the bonding method using heat sealing or ultrasonic bonding.

As materials of the first fibrous sheet 23 and the second fibrous sheet 24, any material other than non-woven fabric may be used as long as it is made of a material having air permeability and moisture permeability. For example, an air-permeable or air-permeable sheet or a moisture-permeable sheet made of a synthetic resin can also be used.

In the absorbent article 1 according to the present embodiment, the second fibrous sheet 24 often directly contacts the user's body. In this case, it is preferable to use a non-woven fabric having functions such as flexibility, touch, and sweat absorbability as the material of the second fibrous sheet 24.

The fiber material 25 is preferably made of a material having liquid diffusibility and liquid permeability, and a material containing a cellulose-based component as a material having such liquid diffusivity and liquid permeability (hereinafter referred to as “ It is preferred to use "paper material".

The fiber material 25 may be a material other than a paper material, as long as the material has liquid diffusibility and liquid permeability. As such a material, for example, natural fibers such as kenaf, bamboo fiber, cotton, cotton, cocoon, sugar cane and the like can be used. Since using a paper material as the fiber material 25 is a preferred embodiment of the present invention, the case where a paper material is used as the fiber material 25 will be described below as an example.

As the paper material, a paper material formed from pulp paper or a material mainly composed of pulp can be used. That is, a pulp can be used as a raw material, and a paper material manufactured through a paper manufacturing process such as a paper making process can be used.

As the raw material pulp, any one of wood pulp, waste paper pulp and the like or a combination of at least one or more of them can be used. As wood pulp, for example, raw material pulp comprising softwood-bleached kraft pulp obtained from softwoods such as red pine, zomatsu, todo pine, Douglas fir, heme rock, and spruce can be used. In addition, it is also possible to use a pulp obtained by blending hardwood bleached kraft pulp and softwood bleached kraft pulp obtained from hardwoods such as beech, nara, hippo, eucalyptus, oak, poplar and alder. However, it is preferable to use softwood bleached kraft pulp alone from the viewpoint of production cost and production efficiency.

When the paper material is formed from pulp-based material, the blending ratio of pulp is preferably 30% or more, more preferably 50% or more, and further 80% or more. Is most preferred. By setting the blending ratio of the pulp to the above ratio, it is possible to improve the flexibility as a whole of the dough or to improve the production efficiency at the time of production. In addition, by increasing the blending ratio of pulp, the waste can be easily decomposed in, for example, the ground after disposal. Therefore, environmental impact can be further reduced, and environmental consideration can be further improved. Moreover, as a paper material, it is preferable to use a water-degradable paper sheet. In addition, although the paper material used as the fiber material 25 has a preferable thing of the single layer structure which consists of a sheet of paper, it may be a multilayer structure of laminating a plurality of sheets of paper. In the case of a multi-layered structure, the material and thickness of the paper in each layer may be the same, or some or all of them may be different. In addition, the paper material used as the fiber material 25 may mix | blend the above-mentioned pulp with the nonwoven fabric. For example, it is also possible to use as the paper material a mixture of the above-described pulp in a spunlace nonwoven fabric or a mixture of the above-described pulp in an air laid nonwoven fabric.

The basis weight of the paper material to be the fiber material 25 is preferably 7 g / m ² to 50 g / m ² . If the weight per unit area is less than 7 g / m ² , it will be difficult to make the wearing feeling good when the absorbent article 1 is worn by the user, and the water transpiration performance and heat radiation performance sufficient for the absorbent article 1 In addition to being difficult to apply, the strength as a dough also becomes insufficient. When the weight per unit area exceeds 50 g / m ² , the thickness as the fabric becomes thick, the above-mentioned wearing feeling also deteriorates, and the above-mentioned water transpiration performance and heat radiation performance also deteriorate. In addition, since the product thickness also increases, it becomes difficult to pack the product at the time of packaging. A more preferable basis weight of the paper material is 10 g / m ² to 30 g / m ² .

[Configuration of Absorber 4]
As shown in FIGS. 1 and 2, the absorber 4 is detachably attached to the mounting portion 2, absorbs the body fluid of the user, and holds the absorbed body fluid.

The absorbent body 4 is an elongated rectangular member, for example, a top sheet (not shown), a back sheet 32, an absorbent core 31 disposed between the top sheet and the back sheet 32, and a folded portion Is equipped. When the user wears the absorbent article 1 according to the present embodiment, the fold formed on the outer peripheral portion (side edge in the width direction) of the absorbent core 31 stands up, and in the longitudinal direction of the absorbent core 31 It becomes a side gather as a gather part 33 formed along.

The gather portion 33 may be a so-called single gather in which only one side gather is formed, or may be a so-called double gather in which two side gathers are formed on one side. The gather portion 33 in the case of double gather has a first gather portion 34 formed along the longitudinal direction at a position close to the absorbent core 31 and a distance away from the absorbent core 31 than the first gather portion 34. And at least a second gather portion 35 formed to stand up at the position.

The back sheet 32 is disposed on the non-skin surface side of the absorbent core 31 and laminated with the absorbent core 31. When the back sheet 32 and the absorbent core 31 are laminated, the back sheet 32 and the absorbent core 31 are joined at a predetermined position. Examples of the bonding method include adhesion with an adhesive, as well as adhesion with a suture, heat seal, ultrasonic bonding, double-sided tape, etc., but are not limited thereto. Moreover, you may join combining the method mentioned above.

The back sheet 32 comprises at least a moisture permeable film. The moisture-permeable film is a film that transmits a gas such as water vapor and does not transmit a liquid such as water. The back sheet 32 may further have a non-woven fabric laminated on the non-skin side of the moisture-permeable film.

As shown in FIGS. 9 to 11, the fourth bonding portion 44 and the fifth bonding portion 45 are respectively formed on one end side and the other end side in the longitudinal direction of the absorber 4, and the longitudinal direction of the absorber 4 is The first buffer 3a as a buffer 3 described later is joined at both ends in the short direction on one end side of the second buffer. Further, the fourth bonding portion 44 and the fifth bonding portion 45 bond both end portions in the width direction on the other end side in the longitudinal direction of the absorber 4 with the second buffer 3 b as the buffer 3 described later. That is, the fourth bonding portion 44 and the fifth bonding portion 45 are formed on one end side in the longitudinal direction of the absorber 4 to be bonded to the first buffer 3a, and the absorber 4 to be bonded to the second buffer 3b. The fourth bonding portion 44 and the fifth bonding portion 45 are also formed on the other end side in the longitudinal direction. Although the details will be described later, the first buffer 3 a and the second buffer 3 b are respectively joined to the inner surface side of the mounting portion 2. And the 4th junction part 44 and the 5th junction part 45 of absorber 4 concerning this embodiment are joined to the inner surface side of these 1st buffer 3a and 2nd buffer 3b.

The sixth bonding portion 46 bonds one end side in the longitudinal direction of the absorber 4 to the first buffer 3 a between the fourth bonding portion 44 and the fifth bonding portion 45, and the other in the longitudinal direction of the absorber 4 The end side and the second buffer 3b are joined. The sixth bonding portion 46 prevents the fourth bonding portion 44 and the fifth bonding portion 45 from being affected by the expansion and contraction of the mounting portion 2 and causing the absorber 4 to shift from a predetermined position, from the viewpoint of that It is preferable to be provided so as to be located at the center of the fourth bonding portion 44 and the fifth bonding portion 45.

Examples of the bonding method of the fourth bonding portion 44, the fifth bonding portion 45, and the sixth bonding portion 46 include bonding with an adhesive, as well as bonding with suture, heat seal, ultrasonic bonding, double-sided tape, etc. It is not limited to this. Moreover, you may join combining the method mentioned above. Furthermore, a surface fastener, a hook, a button or the like may be used for bonding between the mounting portion 2 and the buffer 3.

When the above-described gather portion 33 is a single gather, at least a part of the second gather portion 35 is joined to the mounting portion 2 when the gather portion 33 and the above gather portion 33 are double gathers. Is preferred. In this manner, by connecting the gather portion 33 (the second gather portion 35 in the case of double gather) to the mounting portion 2, tension can be easily applied to the thread-like elastic body forming the gather portion 33. Accordingly, the gather portion 33 can be more easily erected accordingly. Therefore, when the user wears the absorbent article 1, when the leg is taken out from the leg opening 47, the gather portion 33 is kept in close contact with the leg, thereby eliminating the leakage of body fluid at the time of wearing. It can be done.

[Configuration of First Buffer 3a and Second Buffer 3b]
As shown in FIG. 2, the first buffer 3 a and the second buffer 3 b are disposed on the inner surface of the mounting portion 2 so as to be located between the mounting portion 2 and the absorber 4. For the first buffer 3a and the second buffer 3b, a fabric material to be a stretchable member used for the mounting portion 2 or a synthetic fiber such as a non-woven fabric is used. The details of the former dough material are omitted since they have already been described. As a constituent material of the latter non-woven fabric, for example, synthetic fibers such as olefins, polyesters and polyamides such as polyethylene and polypropylene, regenerated fibers such as rayon and cupra, and natural fibers such as cotton are used. A nonwoven fabric obtained by an appropriate processing method such as a thermal bond method, a meltblown method, a needle punch method or the like can be used. Further, a core / sheath bicomponent non-woven fabric in which a fiber having a high melting point is cored and a fiber having a low melting point is sheathed, or a non-woven fabric by secondary moving fibers such as side-by-side fibers or split fibers can be used. This bicomponent non-woven fabric is preferable because it can be excellent in heat fusion. In addition, the first buffer 3a and the second buffer 3b may be formed of a material having a stretch function in order to impart stretchability.

Further, as shown in FIGS. 9 to 11, the first buffer 3a and the second buffer 3b are formed to have a width larger than the size in the width direction of the absorber 4 described above, and thus the absorption It is preferable that the central portion in the width direction of the body 4 and the central portion in the width direction of the first buffer 3 a and the second buffer 3 b be arranged to coincide with each other. Further, the first buffer 3a and the second buffer 3b have play portions 48 by a predetermined width on both end sides. A first bonding portion 41 and a second bonding portion 42 are formed at the outer end where the play portion 48 is formed. In the first bonding portion 41 and the second bonding portion 42, the first bonding portion 41 and the second bonding portion 42 The buffer 3 a and the second buffer 3 b are bonded to the inner surface of the mounting portion 2. At this time, the first buffer 3a and the second buffer 3b are joined to the mounting portion 2 in such a manner that when the mounting portion 2 is expanded, the play 48 is also expanded. That is, when the mounting portion 2 is in an extended state, the play portion 48 is in an expanded state, and as the mounting portion 2 contracts, the play portion 48 starts to contract from the expanded state, and the mounting portion 2 contracts by a predetermined amount The play 48 is designed to be slackened. That is, the slack portion is generated in the slack portion 48 by the contraction of the mounting portion 2 to prevent the occurrence of the displacement of the absorbent body 4 from the predetermined position due to the expansion and contraction of the mounting portion 2. It has become. The first bonding portion 41 and the second bonding portion 42 are preferably bonded in a point or line shape.

Further, the first buffer 3 a and the second buffer 3 b are not only joined at the first joint 41 and the second joint 42, but also between the first joint 41 and the second joint 42. It is preferable that the mounting portion 2 and the first buffer 3 a and the second buffer 3 b be bonded to each other by the third bonding portion 43. As described above, by forming the third joint portion 43, it is possible to prevent the displacement of the first buffer 3a and the second buffer 3b from the predetermined position, and in the case where there is expansion and contraction of the mounting portion 2. Even if it does, the influence accompanying the expansion and contraction can be absorbed. In addition, it is preferable that the 3rd junction part 43 is joined in the shape of a point or linear. Moreover, in the first bonding portion 41, the second bonding portion 42, and the third bonding portion 43 described above, bonding may be performed in the same mode, or may be performed in a different mode.

As shown in FIG. 3, a first space 49 as a space of a predetermined size is formed between the absorber 4 and the first buffer 3 a and the second buffer 3 b. In addition, a second space 50 as a space of a predetermined size is formed between the mounting portion 2 and the first buffer 3a and the second buffer 3b. In the first space 49 or by causing the slack portion to enter the first space 49 or the second space 50 by the occurrence of the slack as the attaching portion 2 contracts as described above. It is formed so as to be retracted into the second space portion 50 or to advance from the inside of the first space portion 49 or the inside of the second space portion 50. Further, the air permeability of the absorbent article 1 as a whole can be improved by the first space 49 and the second space 50.

[Operation and Effect of Absorbent Article 1 According to First Embodiment]
Next, the effects of the absorbent article 1 according to the present embodiment will be described.
First, the operation of the absorbent article 1 when the mounting portion 2 is stretched will be described. In this case, for example, the mounting unit 2 is stretched by the hand of the user. At that time, in the absorbent article 1 according to the present embodiment, the mounting portion 2 stretches in both the overlapping region 14 and the non-overlapping region 15. Therefore, for example, the amount of extension can be greatly increased as compared with that in which only the non-overlap region 15 extends. Therefore, in this case, when the user wears the absorbent article 1, the user can wear the absorbent article 1 in a state of being greatly expanded, and thus a more easy-to-wear state can be created. When the mounting portion 2 is extended in this manner, in the mounting portion 2, the play portion 48 of the first buffer 3 a and the play portion 48 of the second buffer 3 b are also expanded.

In this case, the positional relationship between the first bonding portion 41, the second bonding portion 42, the third bonding portion 43, the fourth bonding portion 44, the fifth bonding portion 45, and the sixth bonding portion 46 is shown in FIGS. It will be. That is, when the mounting portion 2 is extended, the first joint portion 41, the second joint portion 42 and the third joint portion 43 respectively include the mounting portion 2, the first buffer 3a and the second buffer 3b. Because bonding is performed, with the extension of the mounting portion 2, the spaces between the first bonding portion 41 and the third bonding portion 43 and between the second bonding portion 42 and the third bonding portion 43 are expanded, Each becomes L1 (see FIG. 9). On the other hand, since the fourth bonding portion 44, the fifth bonding portion 45 and the sixth bonding portion 46 bond the first buffer 3a and the second buffer 3b to the absorber 44, the mounting portion 2 is stretched. However, the distance between the fourth bonding portion 44 and the sixth bonding portion 46 and the distance between the fifth bonding portion 45 and the sixth bonding portion 46 are substantially the same L2 as before stretching, without being affected by that. (See Figure 11).

When the mounting portion 2 is contracted from the extended state, the idler 48 of the first buffer 3a and the idler 48 of the second buffer 3b also contract. Furthermore, when the amount of contraction of the mounting portion 2 exceeds a predetermined amount, slack starts to occur in the play portion 48 of the first buffer 3 a and the play portion 48 of the second buffer 3 b. The slack gradually increases in the direction in which the mounting portion 2 contracts, and further retracts into the first space 49 and the second space 50. That is, in the absorbent article 1 according to the present embodiment, when the first buffer 3 a and the second buffer 3 b have the play portion 48, the influence due to the expansion and contraction of the mounting portion 2 is obtained at the play portion 48. It can be an absorbable buffer area. Therefore, expansion and contraction of the mounting portion 2 causes, for example, unnecessary tension to act on the absorber 4 to be pulled, or conversely, contraction of the mounting portion 2 causes, for example, unnecessary wrinkles to occur on the absorber 4. Can prevent such problems. In addition, by forming the absorbent article 1 in this manner, it is possible to eliminate problems such as damage to the absorbent body 4 and leakage of body fluid from the absorbent article 1.

In addition, in the absorbent article 1 according to the present embodiment, since the mounting portion 2 is formed of a stretchable member and can expand and contract in the overlapping region 14 and the non-overlapping region 15, for example, only the non-overlapping region 15 Compared with the absorbent article 1 of the aspect which can be expanded and contracted, it is possible to soften the fit feeling and the wearing feeling as a whole when worn by the user and to improve the wearing comfort. Since this expands and contracts in the overlap area 14 and the non-overlap area 15 as described above, it is possible to use the elastic member 21 having a smaller expansion and contraction force than in the case of expanding and contracting with the elastic member 21 of only a local part. Therefore, the wearing feeling when the user wears can be made softer.

Moreover, since the mounting part 2 fits the body of the user as a whole in this way, it can be worn in a form more suited to the shape of the user's body. Therefore, according to the absorbent article 1 according to the present embodiment, the sense of resistance when the user wears can be significantly reduced.

Furthermore, according to the absorbent article 1 according to the present embodiment, since the mounting portion 2 and the absorber 4 are joined via the respective junctions from the first junction portion 41 to the sixth junction portion 46, Even when the user wears and moves, the absorber 4 can be prevented from shifting from the predetermined position of the user's crotch, and thereby occurrence of leakage of body fluid and the like can be prevented. Can maintain body fluid, and can also improve hygiene.

In particular, according to the absorbent article 1 according to the present embodiment, since the first buffer 3a and the second buffer 3b having the play portion 48 are interposed between the mounting portion 2 and the absorber 4, Even if there is a large movement of the user, it is possible to make the absorber 4 less susceptible to the influence of the movement of the play portion 48 of the first buffer 3a and the second buffer 3b. Therefore, according to the absorbent article 1 according to the present embodiment, leakage of body fluid can be further prevented more easily, and discomfort felt not only by the user but also by the carer, for example, can be further reduced. it can. Further, this effect can be further improved by forming the third bonding portion 43 and the sixth bonding portion 46.

As described above, according to the absorbent article 1 according to the present embodiment, it is possible to significantly improve the wearing feeling when used by the user, and in addition, the absorbent body 4 does not leak body fluid of the user. Internally absorbed fluid can be retained. Therefore, it is possible to provide a more hygienic absorbent article 1 also in terms of hygiene.

[Method of Manufacturing Absorbent Article 1 According to First Embodiment]
Next, a method of manufacturing the absorbent article 1 according to the first embodiment of the present invention will be described. As shown in FIG. 12, the absorbent article 1 according to the present embodiment is formed while the first elongated body 53 serving as the front body 5 and the second elongated body 54 serving as the back body 6 are sequentially conveyed. . At this time, the first elongated body 53 and the second elongated body 54 flow in a state where a predetermined tension is applied in the transport direction. In other words, the first elongated body 53 and the second elongated body 54 flow in the transport direction in a state of being stretched by an amount corresponding to the tension compared to the natural length. The amount of elongation at this time can be set arbitrarily, but the first elongated body 53 and the second elongated body 54 may be transported in a fully stretched state (this state is referred to as 100% stretched state). Is preferred.

As described above, when the first elongated body 53 and the second elongated body 54 flow in the direction A in FIG. 12 in the state of being 100% stretched, the first bonding portion 41, the

second Adhesives

41a, 42a, 43a to be the joint 42 and the third joint 43 are applied. Next, a sheet of non-woven fabric to be the first buffer 3a and the second buffer 3b is laminated on the applied

adhesives

41a, 42a, 43a. By laminating the sheets of non-woven fabric in this manner, the first bonding portion 41 and the second bonding portion 42 are formed at both ends in the conveyance direction (direction A in FIG. 12) of the non-woven fabric sheet, and these first bonding portions The third joint 43 is formed between the second joint 41 and the second joint 42. As described above, although the first elongated body 53 and the second elongated body 54 are in a state of being stretched by 100% also at this time, non-woven sheets used for the first buffer 3a and the second buffer 3b. Is laminated without such tension.

Next, on the first buffer 3a and the second buffer 3b,

adhesives

44a, 45a, 46a to be the fourth bonding portion 44, the fifth bonding portion 45, and the sixth bonding portion 46 are applied. At this time, it is preferable that the amounts, intervals, and the like to which the

adhesives

44a, 45a, 46a are applied be uniform.

Next, the absorber 4 is stacked on the

adhesives

44 a, 45 a, 46 a to be the fourth bonding portion 44, the fifth bonding portion 45 and the sixth bonding portion 46. The absorber 4 laminated here is manufactured by another process. That is, the absorbent body 4 flows so that the longitudinal direction corresponds to the transport direction (direction B in FIG. 12) in a state of being processed into a substantially rectangular shape as a whole. Then, in the next step, the absorber 4 is rotated 90 degrees (C direction in FIG. 12), and is further transported in the D direction in FIG. 12, and the fourth bonding portion 44 and the fifth bonding portion 45 described above It laminates on the 1st buffer 3a and the 2nd buffer 3b to which the adhesive agent used as the 6th junction part 46 was applied.

Then, in the next step, the first elongated member 53 and the second elongated member 54 are disposed so as to overlap with each other by being folded back at the central portion of the absorber 4. Also, after being stacked in this manner, the first elongated body 53 and the second elongated body 54 are joined by an optional method such as heat sealing. Next, when the first elongated body 53 and the second elongated body 54 are joined, they are cut by a cutter or the like at the joined portion, and the absorbent article 1 is formed.

When cut in this manner, the first elongated body 53 and the second elongated body 54 are released from the state of being stretched by 100%, and no tension is applied. When the tension is not applied, the mounting portion 2 is contracted from the pulled state, and is contracted as much as possible by the elastic force of the elastic member. When the mounting portion 2 is contracted, in the inside of the absorbent article 1, the play portion 48 is retracted into the first space portion 49 and the second space portion 50, and the absorber 4 is disposed at a predetermined position. The state is maintained.

Thus, the absorbent article 1 according to the present embodiment is manufactured. As manufactured in this manner, and in particular, the first elongated body 53 and the second elongated body 54 are produced in a stretched state by 100%, it is possible to create a more stretchable state at the time of use. In the present embodiment, the first elongated body 53 and the second elongated body 54 have been described using an example of manufacturing in a state of being stretched by 100%, but the first elongated body 53 and the second elongated body are described. The rate of stretching 54 is not limited to 100%. For example, the first elongated body 53 and the second elongated body 54 have the amount of elongation when stretched by an amount corresponding to the tension compared with the length of the natural length, On the other hand, it may be in a stretched state by 80% (this state is referred to as an 80% stretched state), or may be stretched by an elongation amount other than 80%. In addition, the first elongated body 53 and the second elongated body may be gradually stretched from the state of 0% which is the natural length, and may be stretched 80%, or from the state of 0%. It may be stretched to a% stretched state and then contracted from a 100% stretched state to an 80% stretched state. In addition, when the first elongated body 53 and the second elongated body 54 are contracted from the 100% stretched state, the first elongated body 53 and the second long body 54 are returned from the 100% stretched state at a rate of 5% to 50% (return rate). May be That is, the first elongated body 53 and the second elongated body 54 may be contracted from the 100% stretched state, and may be stretched in any range within the range of 95% stretched and 50% stretched. However, it is not necessary to necessarily go through the 100% stretched state, and the desired stretched state may be made directly from the 0% state.

Second Embodiment
Next, an absorbent article 61 according to a second embodiment of the present invention will be described using FIGS. 13 to 17. In the description of the second embodiment, the description of the same configuration as that of the first embodiment will be omitted.

The absorbent article 61 according to the present embodiment is different in configuration from the first embodiment in that the first buffer and the second buffer are not provided. That is, the absorbent article 61 according to the present embodiment includes the mounting portion 62 and the absorber 63, and the mounting portion 62 has the mounting portion 62 when the absorbent article 61 is viewed from the front or back. It is formed to be able to expand and contract in any region of the overlapping region 64 where the absorber 63 overlaps and the non-overlapping region 65 which is a region other than the overlapping region 64. In addition, the absorbent body 63 includes, for example, a top sheet (not shown), a back sheet 69, and an absorbent core 66 disposed between the top sheet and the back sheet 69. The absorbent core 66 absorbs and holds the body fluid. In the back sheet 69, a first bonding portion 70 and a second bonding portion 71 are formed. The detailed description is the same as that described in the first embodiment, and thus the description thereof is omitted.

As shown in FIG. 13 and FIG. 14, the absorbent article 61 according to the present embodiment has one end portion 63 a in the longitudinal direction of the absorber 63 and the absorber on the inner surface of the mounting portion 62 formed in a tubular shape. The other end 63 b in the longitudinal direction 63 is disposed, and the back sheet 69 of the absorber 63 is joined to the mounting portion 62. At this time, as shown in FIG. 15, the first bonding portion 70 and the second bonding portion 71 are formed on the back sheet 69 of the absorber 63. The first bonding portion 70 and the second bonding portion 71 are bonding portions for mounting the absorber 63 to the mounting portion 62 at both ends of the overlapping region 64. The first bonding portion 70 and the second bonding portion 71 may be dot-like or linear. In addition, a third bonding portion 72 in which the back sheet 69 and the mounting portion 62 are bonded is formed between the first bonding portion 70 and the second bonding portion 71. That is, the absorbent article 61 according to the present embodiment is joined at three points by the first joining unit 70, the second joining unit 71, and the third joining unit 72. In addition, the number to be joined is not limited to three. Further, the location where the third bonding portion 72 is formed may be between the first bonding portion 70 and the second bonding portion 71, but the absorber 63 does not shift from the predetermined position when the mounting portion 62 is expanded or contracted. It is preferable to be located at the center between the first joint 70 and the second joint 71 from the viewpoint of preventing the occurrence of the leakage of the body fluid.

The back sheet 69 is formed of, for example, various synthetic fibers such as non-woven fabric, and has flexibility. Further, in the back sheet 69, a portion where the first bonding portion 70 and the second bonding portion 71 are formed is formed to extend in the width direction, and the play portion 73 is formed in this portion. The play portion 73 is formed so as to cause slack by extension and contraction of the mounting portion 62, and the distance between the first joint portion 70 and the side edge of the absorbent core 66 and the second joint portion 71 and the absorbent core The distance to the side edge of 66 is formed to be L3 respectively (see FIG. 15).

Further, when the mounting portion 62 expands and contracts, the distance between the first joint portion 70 and the third joint portion 72 and the distance between the second joint portion 71 and the third joint portion 72 along with the expansion and contraction. Is preferably made to expand and contract. In this way, when the mounting portion 62 expands and contracts, the slack of the play portion 73 can prevent the absorber 63 from being displaced from the predetermined position as the mounting portion 62 expands and contracts. In this case, it is preferable that the absorber 63 shrinks to such an extent that the absorbent core 66 is not wrinkled.

A space 74 having a predetermined distance is formed between the inner surface of the mounting portion 62 and the back sheet 69 of the absorber 63. The space 74 is for evacuating the above-mentioned play 73 in the space 74. That is, the space portion 74 retracts the idle portion 73 or allows the idle portion 73 to move out of the space portion 74 depending on the slack state of the idle portion 73. For example, when the mounting portion 62 contracts, the slack portion retracts into the space portion 74. Conversely, when the mounting portion 62 extends, the slack portion from the space portion 74 is out of the space portion 74. It is intended to be advanced to the At this time, the size of the space portion 74 is a space where the play portion 73 can be retracted in a state in which the mounting portion 62 is not stretched, that is, in a state in which the user does not apply any force in the absorbent article 61 Is preferred.

[Operation and Effect of Absorbent Article 61 According to Second Embodiment]
Next, the function and effect of the absorbent article 61 according to the present embodiment will be described. In the same manner, the same effects as those described above will not be described.

In the absorbent article 61 according to the present embodiment, for example, when the mounting portion 62 is stretched by the user's hand during use, the mounting portion 62 stretches in any of the overlapping region 64 and the non-overlapping region 65. . Therefore, the amount of expansion can be further increased. At this time, when the mounting portion 62 is extended, the play portion 73 of the back sheet 69 joined at the first joint portion 70 and the second joint portion 71 is pulled. That is, in the state before use, the play portion 73 is in a state of being retracted into the space portion 74, but along with the extension of the mounting portion 62, the play portion 73 also goes from the space portion 74 to the outside of the space portion 74. To advance. Then, when the user is in a sufficiently extended state, the play portion 73 goes out of the space portion 74 and is in a state of being pulled up to the maximum (see FIGS. 15 and 16).

Next, when the mounting portion 62 is contracted from the stretched state, the pulling of the play portion 73 of the back sheet 69 is released. Then, when the amount of contraction of the mounting portion 62 exceeds a predetermined amount, slack starts to occur in the play portion 73. The slack gradually increases in the direction in which the mounting portion 62 contracts, and is further sequentially retracted into the space portion 74 (see FIG. 14B). That is, in the absorbent article 61 according to the present embodiment, when the back sheet 69 has the play portion 73, the play portion 73 can absorb the influence due to the expansion and contraction of the mounting portion 62. Therefore, the expansion and contraction of the mounting portion 62 can prevent, for example, such a defect that the absorbent body 63 gets extra wrinkles. Moreover, by doing in this way, the failure of the damage of the absorber 63 and the leak of the bodily fluid from the absorbent article 61 can also be eliminated.

Further, in the absorbent article 61 according to the present embodiment, since the mounting portion 62 is formed of a stretchable member and can expand and contract in the overlapping region 64 and the non-overlapping region 65, for example, only in the non-overlapping region 65. Compared with those of the embodiment which can be expanded and contracted, it is possible to make the fit feeling and the wearing feeling as a whole when worn by the user soft and comfortable to wear. This is because, as described above, since the mounting portion 62 expands and contracts in the overlapping area 64 and the non-overlap area 65, it is possible to use an elastic member having a smaller expansion and contraction force than in the case of expansion and contraction by local elastic members only. It is possible to make the wearing feeling softer when worn by the user.

Thus, the absorbent article 61 according to the present embodiment can exhibit the effects described above by different actions. Therefore, also in the absorbent article 61 according to the present embodiment, the mounting portion 62 and the absorber 63 are joined via the respective joining portions of the first joining portion 70, the second joining portion 71, and the third joining portion 72. Therefore, even when the user moves while wearing the absorbent body 63, the absorbent body 63 can be prevented from shifting from the predetermined position of the crotch of the user, thereby preventing the occurrence of leakage of body fluid, etc. In 63, the body fluid can be held, and the improvement in hygiene can be achieved.

<Modification of Second Embodiment>
Next, modified examples of the absorbent article 61 according to the second embodiment will be described based on FIG. 18 to FIG. This modification is different from the configuration of the absorber 63 described above. That is, in the present modification, at the portion where the first bonding portion 70 and the second bonding portion 71 are formed, the extension of the back sheet 69 in the expansion and contraction direction of the mounting portion 62, in other words, the width direction of the back sheet 69. The length L0 is formed to be longer than the extension length L10 at other locations than the locations where the first bonding portion 70 and the second bonding portion 71 are formed. That is, in the back sheet 69 of the absorber 63, the extension length in the width direction at the portion where the first bonding portion 70 and the second bonding portion 71 are formed is longer than the extension length at the other portions. Ears 75 are formed. The ear portion 75 functions as a play portion, and the extension length at the portion where the ear portion 75 is formed is L0, and the portion other than the portion where the ear portion 75 is formed. The extension length in the width direction at the portion is formed to be L10. These extension lengths satisfy L0> L10, and the extension length of the ear portion 75 is formed to be longer than the other extension lengths. Further, in the present modification, the first bonding portion 70 and the second bonding portion 71 are formed in the ear portion 75, and the side edges of the first bonding portion 70 and the absorbent core disposed in the back sheet 69. And the distance between the second bonding portion 71 and the side edge of the absorbent core 67 are both L4. A relationship of L4> L3 is established such that the interval L4 is larger than the interval L3 described above.

Thus, by forming the first joint 70 and the second joint 71 in the ear 75, the amount of play in the play can be increased. Therefore, according to this modification, even if the amount of expansion and contraction of the attachment portion 62 is large, the play portion flexibly follows and the buffer portion can absorb the influence due to the expansion and contraction of the attachment portion 62. It can perform its function well. Therefore, problems such as liquid leakage can be eliminated more.

[Method of Manufacturing Absorbent Article 61 According to Second Embodiment]
Next, a method of manufacturing the absorbent article 61 according to the present embodiment will be described. As shown in FIG. 21, the absorbent article 61 according to the present embodiment is formed while the first elongated body 75 serving as the front body of the mounting portion 62 and the second elongated body 76 serving as the back body are sequentially conveyed. Be done. At this time, the first elongated body 75 and the second elongated body 76 flow in a state in which a predetermined tension is applied in the transport direction (direction A in the drawing). In other words, the first elongated body 75 and the second elongated body 76 flow in the transport direction in a state of being stretched by an amount corresponding to the tension compared with the natural length. Although the amount of extension can be set arbitrarily, the first elongated body 75 and the second elongated body 76 are transported in a state where they are maximally stretched (this state is referred to as 100% stretched state or maximal stretched state). It is preferable to do.

As described above, when the first elongated body 75 and the second elongated body 76 flow in the A direction in FIG. 21 in the state of being 100% stretched, the first bonding portion 70 and the second bonding in the first step are performed.

Adhesives

70a, 71a, 72a to be the portion 71 and the third bonding portion 72 are applied. At this time, it is preferable that the amounts, intervals, and the like of the adhesive 70a, 71a, 72a to be the first bonding portion 70, the second bonding portion 71, and the third bonding portion 72 be uniform.

Next, an absorber 63 is stacked on the

adhesives

70 a, 71 a, 72 a which become the first bonding portion 70, the second bonding portion 71 and the third bonding portion 72. At this time, as described above, the first elongated body 75 and the second elongated body 76 are conveyed in the A direction with 100% extension, but the absorber 63 is not stacked in the extended state. . Therefore, in the present embodiment, no tension is applied to the absorber 63 at this time.

Here, the absorber 63 is manufactured in a process different from the process in which the first elongated body 75 and the second elongated body 76 are transported. That is, the absorber 63 flows so that the longitudinal direction corresponds to the transport direction (the B direction in FIG. 21) in a state of being processed into a substantially rectangular shape as a whole. Then, in the next step, the absorber 63 is rotated by 90 degrees (C direction in FIG. 21), and is further transported in D direction in FIG. The adhesive 70a, 71a, 72a to be the joint portion 71 and the third joint portion 72 is laminated on the coated long body.

Then, in the next step, the first elongated member 75 and the second elongated member 76 are disposed at a position where they are folded back at the central portion of the absorber 63. Further, after being stacked in this manner, the first elongated body 75 and the second elongated body 76 are joined by an optional method such as heat sealing. Next, when the first elongated body 53 and the second elongated body 54 are joined, they are cut by a cutter or the like at the joined portion, and the absorbent article 61 is formed.

When cut in this manner, the first elongated body 75 and the second elongated body 76 are released from the state of being 100% stretched, and no tension is applied. When the tension is not applied, the mounting portion 62 is contracted from the pulled state, and is contracted as much as possible by the elastic force of the elastic member. When the mounting portion 62 is contracted, in the inside of the absorbent article 61, the play portion is retracted into the space portion, and the absorber 63 is maintained at the predetermined position.

Thus, the absorbent article 61 according to the present embodiment is manufactured. According to the manufacturing method according to the present embodiment, in particular, since the first elongated body 75 and the second elongated body 76 are manufactured in a stretched state by 100%, it is possible to create a more stretchable state at the time of use. Becomes possible. In the present embodiment, the first elongated body 75 and the second elongated body 76 have been described using an example of manufacturing in a state of being stretched by 100%, but the first elongated body 75 and the second elongated body are described. The rate of stretching 76 is not limited to 100%. For example, the first elongated body 75 and the second elongated body 76 have the amount of elongation when stretched by an amount corresponding to the tension compared with the length of the natural length, On the other hand, it may be in a stretched state by 80% (this state is referred to as an 80% stretched state), or may be stretched by an elongation amount other than 80%. In addition, the first elongated body 75 and the second elongated body 76 may be stretched gradually from the 0% state, which is the natural length, to an 80% extended state, or from the 0% state It may be stretched to a 100% stretched state, and then contracted from a 100% stretched state to an 80% stretched state. In addition, when the first elongated body 75 and the second elongated body 76 are contracted from the 100% stretched state, the first elongated body 75 and the second long body 76 are returned from the 100% stretched state at a rate (return rate) of 5% to 50%. May be That is, the first elongated body 75 and the second elongated body 76 may be contracted from the 100% stretched state to have an arbitrary amount of stretching within the range of 95% stretched and 50% stretched. However, it is not necessary to necessarily go through the 100% stretched state, and the desired stretched state may be made directly from the 0% state.

Third Embodiment
Next, an absorbent article 111 according to a third embodiment of the present invention will be described using FIG. 25 to FIG. In the description of the third embodiment, the description of the same parts as those of the first and second embodiments will be omitted.

The absorbent article 111 according to the present embodiment is an absorbent article 111 in a form called a so-called tape type. First, the configuration of the tape-type absorbent article 111 will be described with reference to FIG. The absorbent article 111 according to the present embodiment is disposed at the wearing portion 112 formed so as to be attachable to the waist of the user, and at the time of wearing, in the crotch of the user to absorb and absorb the body fluid of the user. And an absorber 115 for holding a body fluid.

The mounting portion 112 is made of a stretchable member that is entirely stretchable, as described in the first embodiment and the like. The configuration and the like of the stretchable member used for the mounting portion 112 is the same as that described above, and thus the detailed description is omitted here. Further, the mounting portion 112 is formed to have a length capable of orbiting the waist of the user's waist, and the first mounting portion 116 and the second mounting portion 117 are provided at both ends in the longitudinal direction. Is provided. For example, a surface fastener or a re-peeling seal is attached to the first attachment portion 116 and the second attachment portion 117, and can be attached to and detached from the first attached portion 118 and the second attached portion 119 described later. It is supposed to be.

The absorbent body 115 includes, for example, a top sheet (not shown), a back sheet 114, and an absorbent core 113 disposed between the top sheet and the back sheet 114. Further, although not shown in FIG. 25, the absorber 115 is also provided with a gather portion. In the absorbent body 115, the respective configurations of the absorbent core 113, the back sheet 114, and the like are the same as described above, and thus the description thereof is omitted here. The absorber 115 is joined to the mounting portion 112 at the end on one end side of the back sheet 114, and the end on the other end side of the back sheet 114 is a free end.

Further, as shown in FIG. 25, at the end on the other end side of the back sheet 114, a first mounted portion 118 and a second mounted portion 119 are provided. As the first mounting portion 118 and the second mounting portion 119, those which can be attached to and detached from the first mounting portion 116 and the second mounting portion 117 are used. For example, in the case where a surface fastener is used for the first attachment portion 116 and the second attachment portion 117, the first attachment portion 116 and the second attachment portion are also provided to the first attached portion 118 and the second attached portion 119. The part 117 can be attached and detached. For example, in the case where surface fasteners are used for the first attachment portion 116 and the second attachment portion 117, a hook surface (in which a large number of fine hook-like projections are formed on the first attachment portion 116 and the second attachment portion 117) A first bonding surface is attached, and a loop surface (second bonding surface) in which a large number of circular ring-shaped fibers are folded is attached to the first attached portion 118 and the second attached portion 119. When the user wears the absorbent article 111, the hook-like projections of the first joint surface can be worn by being caught on the fibers of the loop surface of the second joint surface. In addition, when the user removes the absorbent article 111, the user can remove the absorbent article 111 by releasing the hook-like protrusion of the first bonding surface and the fiber of the loop surface of the second bonding surface. There is. The configurations of the first attachment portion 116 and the second attachment portion 117, and the first attached portion 118 and the second attached portion 119 may be other configurations.

Next, the joining configuration of the back sheet 114 and the mounting portion 112 will be described. As described above, also in the present embodiment, the absorber 115 and the mounting portion 112 are joined via the play portion 120. In the present embodiment, the play portion 120 is formed by lengthening the extension length in the width direction at one end portion in the longitudinal direction of the back sheet 114. That is, the length in the width direction of the back sheet 114 is the length in the width direction of the absorbent core 113 to be disposed and joined to the back sheet 114 and the length in the width direction necessary for providing gathered portions not shown. In addition, it has a length in the width direction to form the play portion 120. The play portion 120 is formed on both ends in the width direction of the back sheet 114, the first bonding portion 121 is formed on one end side of the back sheet 114, and the second bonding portion 122 is formed on the other end side. Further, in the present embodiment, the third bonding portion 123 is formed at the center in the width direction of the back sheet 114. The first bonding portion 121, the second bonding portion 122, and the third bonding portion 123 are bonded to the mounting portion 112 in the same manner as described above. In addition, since the specific structure of these 1st junction part 121, the 2nd junction part 122, and the 3rd junction part 123 is the same as having demonstrated previously, description here is abbreviate | omitted.

As shown in FIGS. 26 and 27, the mounting portion 112 has a first area 124 and a second area 125. The first region 124 is a region formed between the first bonding portion 121 and the second bonding portion 122, and the second region 125 means a region other than the first region 124. . The mounting portion 112 is formed such that the amount of elongation in the first region 124 and the amount of elongation in the second region 125 are different. Specifically, the extension amount in the second region 125 is formed to be larger than the extension amount in the first region 124, and a state in which a normal tensile force is not applied, in other words, in a state of natural length. When the length of the mounting portion 112 is 1 (the distances L11 and L12 shown in FIG. 26), the maximum expansion ratio in the first region 124 is 1.6 times (the distance L13 shown in FIG. 27). The region 125 is formed so that the maximum expansion rate in the region 125 is 2.6 (the distance L14 shown in FIG. 27). As a result, it is possible to prevent the absorbent 115 from being wrinkled by being subjected to excessive tensile force, and as a result, body fluid leaks to the outside of the absorbent 115 along the wrinkles generated in the absorbent 115 or When the user wears the absorbent article 111, it is possible to prevent an uncomfortable feeling at the time of wearing due to the occurrence of wrinkles.

In addition, the first bonding portion 121 and the second bonding portion 122 are bonded to the mounting portion 112 within the overlapping region when the mounting portion 112 is in the extended state excluding the maximum extended state in which the mounting portion 112 is expanded. There is.

[Operation and Effect of Absorbent Article 111 According to Third Embodiment]
Next, the effects of the absorbent article 111 according to the present embodiment will be described. In addition, also about the effect concerning this Embodiment, description is abbreviate | omitted about the same point as having demonstrated previously.

In the absorbent article 111 according to the present embodiment, for example, when the mounting portion 112 is stretched by the user's hand during use, the mounting portion 112 stretches in both the overlapping region and the non-overlapping region. In this case, since the idler 120 is retracted into the space having the same configuration as that described above formed in the overlapping region when not in use, the first joint is obtained by the extension of the mounting portion 112. The positions of the first bonding portion 121 and the second bonding portion 122 are different from the positions when not in use, and the first bonding portion 121 and the second bonding portion 122 sequentially move away from each other. Therefore, the idler 120 which has been retracted into the space when not in use is pulled out of the space. At this time, even if the mounting portion 112 is extended, the absorber 115 causes the absorbent core 113 and the back sheet 114 to be subjected to an excessive load due to the extension of the mounting portion 112 as the idle portion 120 is pulled out. Etc. can be prevented. In addition, since such a load is not applied, the position of the absorbent core 113 or the like does not greatly shift even when worn by the user, so that the ease of wearing can be maintained.

As described above, the idler 120 is sequentially pulled out from the space following the extension of the mounting portion 112 until the mounting portion 112 extends to a length of 1.6 times the natural length. That is, when extending to a length of 1.6 times the natural length, the mounting portion 112 extends in the overlapping region and the non-overlapping region, in other words, in any of the first region 124 and the second region 125. Do. And when it becomes 1.6 times from the above-mentioned natural length, all the play parts 120 will be pulled out from the inside of a space part, and it will be in the state which stretched without slack. Thereafter, when the mounting portion 112 is extended by a factor of 1.6 or more from the above-mentioned natural length, in this case, the play portion 120 maintains a stretched state without slack, so It will not be possible to stretch. On the other hand, the second area 125 is sequentially stretched without being affected by the play portion 120. The second region 125 can then be stretched to a length of 2.6 times the natural length described above. Therefore, according to the absorbent article 111 according to the present embodiment, the amount of stretching can be made to differ depending on the first area 124 and the second area 125 in the mounting portion 112, whereby the time of expansion can be achieved. Excessive tension on the absorber 115 can be prevented.

Moreover, according to the absorbent article 111 according to the present embodiment, it is possible to prevent the occurrence of wrinkles due to the application of excessive tension to the absorbent body 115, specifically to the absorbent core 113 and the back sheet 114, It is possible to eliminate discomfort when the user wears, and it is possible to prevent leakage through a bag when the user excretes body fluid or the like.

[Method of Manufacturing Absorbent Article 111 According to Third Embodiment]
Next, a method of manufacturing the absorbent article 111 according to the present embodiment will be described. As shown in FIG. 28, the absorbent article 111 according to the present embodiment is formed while the long bodies 126 to be the mounting portion 112 are sequentially transported. At this time, the elongated member 126 flows in a state where a predetermined tension is applied in the transport direction (direction A in the drawing). In other words, the elongated member 126 flows in the transport direction in a state of being stretched by an amount corresponding to the tension compared with the length of the natural length. The amount of extension can be set arbitrarily, but it is preferable to transport while the elongated member 126 is fully stretched (this state is referred to as a 100% stretched state or a maximum stretched state).

As described above, when the elongated member 126 flows in the A direction in FIG. 28 in a state of 100% extension, in the first step, the first bonding portion 121, the second bonding portion 122, and the third bonding portion 123 The adhesive 121a, 122a, 123a is provided by any method such as coating. At this time, it is preferable that the amount, the interval, and the like of the adhesive to be applied to the first bonding portion 121, the second bonding portion 122, and the third bonding portion 123 be uniform.

Next, the absorber 115 is stacked on the

adhesives

121a, 122a, and 123a to be the first bonding portion 121, the second bonding portion 122, and the third bonding portion 123. At this time, as described above, although the elongated member 126 is transported in the A direction with 100% extension, the absorber 115 is not stacked in the extension. Therefore, in this embodiment, no tension is applied to the absorber 115 at this time.

Here, the absorber 115 is manufactured in a process different from the process in which the long body 126 is transported. That is, the absorbent body 115 flows so that the longitudinal direction corresponds to the transport direction (the B direction in FIG. 28) in a state of being processed into a substantially rectangular shape as a whole. Then, in the next step, the absorbent core 113 is placed on the back sheet 114.

Next, the back sheet 114 on which the absorbent core 113 is disposed, that is, the absorbent body 115 is rotated by 90 degrees (C direction in FIG. 28), and further conveyed in the D direction in FIG. It laminates | stacks on the elongate body to which the adhesive agent used as the 1st junction part 121, the 2nd junction part 122, and the 3rd junction part 123 was applied.

Then, in the next step, the absorbent article 111 is formed by cutting at a predetermined place with a cutter or the like.

When cut in this manner, the state of the elongated body 126 in the state of being 100% stretched is released, and a state in which tension is not applied is obtained. When the tension is not applied, the mounting portion 112 is contracted from the pulled state, and is contracted as much as possible by the elastic force of the elastic member. When the mounting portion 112 is contracted, in the inside of the absorbent article 111, the play portion 120 is retracted into the space, and the absorber 115 is maintained in the predetermined position.

Thus, the absorbent article 111 according to the present embodiment is manufactured. According to the manufacturing method of the absorbent article 111 according to the present embodiment, in particular, since the long body 126 is manufactured in a stretched state by 100%, it is possible to create a more stretchable state at the time of use. . In the present embodiment, although the example in which the elongated body 126 is manufactured by being stretched by 100% is described, the stretching ratio of the elongated body 126 is not limited to 100%. For example, compared with the natural length, the elongated body 126 is stretched by an amount corresponding to 80% with respect to the above-mentioned stretch amount in the state of 100% stretch when the stretch amount corresponds to the tension applied. It may be in an expanded state (this state is referred to as an 80% expanded state), or may be expanded by an amount other than 80%. In addition, the elongated member 126 may be gradually stretched from the 0% state, which is the natural length, to an 80% stretched state, or from the 0% state to a 100% stretched state. Then, it may be contracted from the state of 100% elongation to be in the state of 80% elongation. In addition, when the elongated body 126 is contracted from the 100% stretched state, the elongated body 126 may be returned from the 100% stretched state at a rate (return rate) of 5% to 50%. That is, the elongated member 126 may be contracted from the 100% stretched state to have an arbitrary amount of stretching within the range of the 95% stretched state and the 50% stretched state. However, it is not necessary to necessarily go through the 100% stretched state, and the desired stretched state may be made directly from the 0% state.

As mentioned above, although the absorbent article which concerns on embodiment of this invention was demonstrated in detail, above only illustrated the absorbent article which concerns on this invention, in the range which does not deviate from the meaning of this invention, it changes suitably You may For example, as shown in FIG. 22, a plurality of

buffer members

85a, 85b, 85c, and 85d are provided in the absorber 81, and the first bonding portion 82, the second bonding portion 83, and the third bonding portion 84 are formed for each. , And may be formed to be bonded to the mounting portion. By forming in this manner, the influence of expansion and contraction of the mounting portion can be absorbed by the play portion, thereby preventing the absorber from shifting from the predetermined position and preventing the occurrence of leakage and the like due to the shift. it can.

Further, in the present specification, with regard to the pants-type absorbent article, the front and back body portions of the mounting portion have been described using an embodiment having the same size in the longitudinal direction, but as shown in FIG. The longitudinal size (length) of the front body 92 and the back body 93 of the portion 91 may be different. In FIG. 23, an example is given in which the longitudinal size of the back body 93 is larger than the longitudinal size of the front body 92, but the longitudinal size of the front body 92 is It may be formed to be larger than the longitudinal size of the back part 93.

Moreover, in this specification, although the mounting part demonstrated as a cylindrical form with which the front body and the back body were joined, this invention is not limited to this. For example, as shown in FIG. 24, joints such as surface fasteners or releasable seals may be attached to both longitudinal end portions of the front body 101 and longitudinal end portions of the rear body 102. Specifically, when the surface fastener 103 is used, a hook surface (first joint surface) on which a large number of fine hook-like projections are formed is attached to both end portions of the front body 101 in the longitudinal direction. A loop surface (second joint surface) in which a large number of circular ring-shaped fibers are folded is attached to both longitudinal ends, and when attaching to the user, the hook surface and the loop surface facing each other are joined to form an annular attachment portion In the form of Thus, the front body 101 and the rear body 102 may be detachable. As a result, the entire mounting unit can be expanded in the expanding direction by the front and back bodies having elasticity as a whole, so that the adjustment width for fitting the mounting unit to the user can be increased. Can. The attachment position of the hook surface and the loop surface is not particularly limited.

Also, in the present specification, the third joint and the sixth joint are not necessarily required.

1, 61, 111

Absorbent article

2, 62, 91, 112 Mounting portion 3 Buffer 3a First buffer

3b Second buffer

4, 63, 81

Absorber

5, 92, 101

Front body

6, 93, 102 Back Body 11 Waist 12 Lower waist 13

Upper leg

14, 64

Overlap area

15, 65

Non-overlap area

31, 66, 113

Absorbent core

32, 64, 119 Back sheet 33 Gathered part 34 First gathered part 35 Second gathered

part

41 , 70, 82, 121 first

joint portion

42, 71, 83, 122 second

joint portion

43, 72, 84, 123 third

joint portion

48, 73, 120 play portion 49 first space portion 50 second space portion 75 Ear 123 First area 124 Second area 126 Long body

Claims

A mounting part formed so as to be attachable to the waist of the user, an absorbent core for absorbing the body fluid of the user and holding the absorbed body fluid, and a top disposed on the skin surface side of the absorbent core An absorbent article comprising: a sheet; and an absorbent body having a back sheet disposed on the non-skin surface side of the absorbent core,
The mounting portion is formed of a stretchable member formed by laminating a plurality of fiber sheets and an elastic member having stretchability, and has an overlapping region overlapping the absorber and a non-overlapping region other than the overlapping region. And
The absorber is
A first joint portion and a second joint portion joined to the mounting portion at a side edge in a direction in which the mounting portion extends and contracts;
The mounting portion is disposed between the absorbent core and the mounting portion, and is joined to the mounting portion via the first joint portion and the second joint portion, and the mounting portion is stretched by a predetermined amount. An absorbent article comprising: a play portion which is in a state of being pulled along with the expansion of the sleeve and becomes a state in which slack occurs as the attachment portion is contracted when the attachment portion is contracted.
The absorbent article according to claim 1, wherein the absorbent comprises a third joint that joins the absorber and the mounting part between the first joint and the second joint.
The distance between the first bonding portion and the third bonding portion and the distance between the second bonding portion and the third bonding portion expand and contract when the mounting portion expands and contracts. Absorbent articles.
A space is formed between the mounting portion and the absorber;
The absorbent article according to claim 1, wherein the play portion retracts into the space portion when the mounting portion contracts, and the play portion advances from the space portion when the mounting portion expands.
The absorbent article according to claim 1, wherein the absorbent is bonded at the first bonding portion and the second bonding portion in the overlapping region in the mounting portion in the stretched state excluding the maximum stretched state.
The mounting portion has a first region which is a region between the first bonding portion and the second bonding portion, and a second region which is a region other than the first region,
The absorbent article according to claim 1 formed so that the amount of extension of said 1st field at the time of extension of said mounting part and the amount of extension of said 2nd field may differ.
The absorbent article according to claim 6, wherein the amount of stretching in the second region is formed to be larger than the amount of stretching in the first region.
The shock absorber further includes a buffer disposed between the back sheet and the mounting portion,
The absorption according to claim 1, wherein the first bonding portion and the second bonding portion are formed in the buffer body, and the back sheet is bonded between the first bonding portion and the second bonding portion. Sex goods.
The absorbent article according to claim 1, wherein the first joint and the second joint are formed on the back sheet.
In the back sheet, the length of the extending portion in the direction in which the mounting portion expands and contracts is longer than the length of the extending portion at the other portion at the portion where the first bonding portion and the second bonding portion are formed. The absorbent article according to claim 1, wherein the absorbent article is formed to be
The absorber has a gather portion provided along the longitudinal direction of the absorbent core,
The absorbent article according to claim 1, wherein the gather portion is fixed to the mounting portion at at least a part of the portion.
The gather portion includes at least a first gather portion formed at a position close to the absorbent core, and a second gather portion formed at a position farther from the absorbent core than the first gather portion. Have,
The absorbent article according to claim 11, wherein the second gather portion is fixed to the mounting portion.
The mounting portion has a front body located on the front side of the user at the time of mounting, and a rear body located on the rear side of the user at the time of mounting.
The absorbent article according to claim 1, wherein the first joint portion and the second joint portion are formed on at least one of the front body and the back body.
The absorbent article according to claim 1, wherein the mounting portion is formed such that the lower portion has a higher tensile strength than the other portions.
The absorbent article according to claim 1, wherein the mounting portion is formed such that the lower portion has a lower stretch strength than the other portions.
A mounting portion formed so as to be attachable to the waist of the user, an absorbent core which absorbs the fluid of the user and holds the absorbed liquid, and a top disposed on the skin surface side of the absorbent core An absorbent body comprising a sheet and a back sheet disposed on the non-skin surface side of the absorbent core;
Conveying the stretchable elongated body in a tensioned and stretched state;
Applying an adhesive to the stretched elongated body;
Laminating a part of the absorber to the stretched elongated body via the adhesive;
Cutting at a predetermined position a long body on which the absorbers are stacked;
The manufacturing method of the absorbent article which has.
The elongated body having a first elongated body and a second elongated body;
The adhesive is applied to the first elongated body and the second elongated body,
The end of the absorbent body is laminated with the first elongated body at one end, and the end of the other end is laminated with the second elongated body,
The absorber is folded after being stacked on the first elongated body and the second elongated body, and the first elongated body and the second elongated body are stacked, and the stacked body is stacked. Joining predetermined portions of the first elongated body and the second elongated body,
The manufacturing method of the absorbent article of Claim 16 cut | disconnected in the junction part which joined the said 1st elongate body and the said 2nd elongate body.