WO2017135248A1

WO2017135248A1 - Absorbent article and method for producing absorbent article

Info

Publication number: WO2017135248A1
Application number: PCT/JP2017/003404
Authority: WO
Inventors: 山田菊夫
Original assignee: 山田菊夫
Priority date: 2016-02-01
Filing date: 2017-01-31
Publication date: 2017-08-10

Abstract

By being provided with a torso-fitting part having a sheet shape that expands and contracts along a first direction, with the first direction being the longitudinal direction, that can be widened and expanded with respect to the waist to fit the torso-fitting part to the torso and an absorber covering the crotch part in a state in which the torso-fitting part is fit to the torso and, with a second direction intersecting the first direction being the longitudinal direction, one end part of the second direction being bonded in place, except for the two ends of the first direction of the torso-fitting part, and the two ends of the first direction of the torso-fitting part being bonded detachably to the other end part of the second direction, the feel of the fit of the absorbent article is improved, and the absorbent article becomes easier to wear or to put on.

Description

Absorbent article and method for manufacturing absorbent article

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

Conventionally, in absorbent articles such as disposable diapers, an elastic member is joined to a sheet material in an expanded state, and the elastic member is contracted to form a gather (a stretchable part having a large number of folds) on the sheet material. Has been done. Moreover, a composite elastic member in which a plurality of elastic members are arranged between two sheet materials and a plurality of ridges extending continuously over the plurality of elastic members is formed as a necessary part of the disposable diaper. The technique used is known (for example, refer to Patent Document 1).

Japanese Patent Laid-Open No. 2005-080859

However, in the above-mentioned Patent Document 1 and the like, although examinations on the feel and appearance of wrinkles have been made, studies on the fit feeling, ease of wearing and ease of wearing of absorbent articles have not been made sufficiently.

The present invention has been made in view of the above problems, and an object thereof is to provide an absorbent article having a good fit, easy to wear or easy to wear, and a method for manufacturing the absorbent article.

The absorbent article of the present invention has a sheet shape that has a first direction as a longitudinal direction and expands and contracts along the first direction, and can be expanded and stretched around the trunk to be mounted on the trunk. The second direction intersecting the first direction is a longitudinal direction, and one end portion of the second direction is joined to a position excluding both ends of the trunk portion mounting portion in the first direction, and the second direction An absorbent body covering the crotch portion with both ends of the body mounting portion in the first direction being detachably joined to the other end portion in the direction and the body mounting portion being mounted on the body portion. It is an absorbent article.

The manufacturing method of the absorbent article of the present invention has a sheet shape that expands and contracts along the longitudinal direction, and can be expanded and extended with respect to the periphery of the trunk, and the trunk mounting section that is mounted on the trunk, and the trunk An absorbent article that covers the crotch portion in a state in which the portion mounting portion is mounted on the trunk portion, and a manufacturing method of an absorbent article, wherein the body mounting portion is at a position excluding both longitudinal ends. A step of joining one end of the absorber in the longitudinal direction, and a step of providing engagement portions that engage with the other end of the absorber in the longitudinal direction at both ends in the longitudinal direction of the body mounting portion. It is a manufacturing method of an absorbent article.

The present invention has an effect of providing an absorbent article that has a good fit and is easy to wear or easy to wear. Moreover, the manufacturing method of the absorbent article of this invention has a good fit, and can manufacture the absorbent article which is easy to wear or is easy to wear.

It is a figure which shows the fabric used for a disposable underwear. It is a perspective view of the cloth of FIG. It is an enlarged view of the cloth of FIG. FIG. 4 is a cross-sectional view taken along line AA in FIG. 3. FIG. 4 is a sectional view taken along line BB in FIG. 3. It is a figure which shows the space formed between a 2nd fiber sheet and a 3rd fiber sheet. It is a figure which shows space. It is sectional drawing of the cloth | dough used as a surface material of an absorber. It is a figure which shows the disposable underwear (open state) of 1st Embodiment. It is a figure which shows the disposable underwear (pants state) of 1st Embodiment. FIG. 11A to FIG. 11E are diagrams for explaining a method of joining the body mounting portion and the absorber. It is a flowchart shown about the manufacturing method of a trunk | drum mounting part. It is a figure which shows the state which looked at the absorber from the skin surface side. It is a figure which shows the state which looked at the absorber from the non-skin surface side. It is a flowchart shown about the manufacturing method of an absorber. It is a figure which shows the disposable underwear (pants state) which concerns on 2nd Embodiment. It is a figure which shows the state which looked at the disposable underwear (open state) which concerns on 2nd Embodiment from the non-skin surface side. It is the figure (one part omitted) which looked at the disposable underwear (open state) from the skin surface side. FIG. 19A and FIG. 19B are views for explaining a method for forming a disposable undergarment according to the second embodiment.

<< First Embodiment >>
Hereinafter, a first embodiment will be described with reference to FIGS. FIG. 1 shows the surface state of the fabric 1 used in the present embodiment. In the present embodiment, the fabric 1 is used for the body mounting portion 11 (see FIGS. 9 and 10) of the disposable underwear 10 that is an absorbent article. FIG. 2 is a perspective view of the fabric 1, and FIG. 3 is an enlarged view of the fabric 1. 4 and 5 are a cross-sectional view taken along line AA and a cross-sectional view taken along line BB in FIG.

(Fabric 1)
In FIG. 1, the fabric 1 is continuous in the longitudinal direction along the surface of the fabric 1. In the example of FIG. 1, the longitudinal direction of the fabric 1 is the X direction. The dough 1 is formed from a laminated sheet 30 (see FIGS. 4 and 5), and the laminated sheet 30 includes a raw material sheet and an elastic structure including an elastic member 5 provided on the raw material sheet. In the cloth 1, an elastic member 5 is provided therein. In the fabric 1 illustrated in FIG. 1, the elastic member 5 is formed by providing a plurality of elastic bodies. The plurality of elastic bodies are provided so as to be spaced apart from each other in a direction crossing the longitudinal direction of the fabric 1, and the extending directions of the respective elastic members 5 are provided so as to coincide with the longitudinal direction of the fabric 1. In the fabric 1, due to the action of the restoring force of the elastic member 5, the concave and convex portions are alternately formed along the longitudinal direction of the fabric 1 as shown in FIG. Moreover, the uneven | corrugated row | line | column which consists of the recessed part and convex part which were formed alternately along the longitudinal direction of the fabric 1 is arranged in multiple rows in the direction (Y direction in the example of FIG. 1) intersecting the longitudinal direction of the fabric 1. It is formed, and the collar portion is formed by the plurality of uneven rows. Further, at least a part of the adjacent concavo-convex rows is formed with a gap therebetween, and the formation position of the gap is a position corresponding to the laying position of the elastic member 5.

(Elastic structure)
In the example of FIG. 1, the elastic structure formed on the fabric 1 is formed from an elastic member 5.

(Elastic member 5)
As described above, the elastic member 5 can be formed from a plurality of elastic bodies. In this case, as the elastic member 5, for example, a linear elastic body 5a having elasticity as shown in FIG. 5 or the like is preferably used, and a thread rubber is preferably used as the linear elastic body 5a. The shape of the elastic member 5 is not limited to a cylindrical shape, and may be a triangular prism shape, a quadrangular prism shape, other polygonal column shapes, or an elliptical column shape. In the example of FIG. 5, the external shape of the linear elastic body 5a is linear and cylindrical, and the cross-sectional shape is circular. The elastic member 5 may be formed from a single elastic body. In this case, the elastic member 5 may be formed from an elastic sheet, for example. As the elastic sheet, an elastic sheet formed in a lattice shape, a stretchable film, or the like may be used. As the stretchable film, a urethane film, a silicone film, an elastomer film, or the like can be used.

The material of the elastic member 5 is preferably urethane, silicone, butadiene, synthetic rubber based on styrene / butadiene, or natural rubber. However, the present invention is not limited to this, and the elastic member 5 may be a combination of any of these synthetic rubber and natural rubber materials.

Further, when the linear elastic body 5a is used as the elastic member 5, the linear elastic body 5a may be a bundle of a plurality of linear members or twisted together.

(Laminated sheet 30 and raw material sheet)
The fabric 1 is formed from a laminated sheet 30. In the example shown in FIGS. 4 and 5, the laminated sheet 30 includes a raw material sheet and an elastic member 5 having elasticity. The raw material sheet includes a first fiber sheet 2 having air permeability, a second fiber sheet 3 having air permeability, and a third fiber sheet 4 having liquid diffusibility. In this example, the third fiber sheet 4 is interposed between the first fiber sheet 2 and the second fiber sheet 3. The 3rd fiber sheet 4 is a sheet | seat provided with the fiber layer which has liquid diffusibility, and has air permeability. And the raw material sheet also has air permeability.

When the dough 1 is trimmed to form the body mounting part 11 of the disposable underwear 10 shown in FIGS. 9 and 10, the first fiber sheet 2 is positioned on the skin surface side of the body mounting part 11. And the 2nd fiber sheet 3 is located in the non-skin surface side on the opposite side to the skin surface side of the trunk | drum mounting | wearing part 11. FIG.

(Number of layers and layer structure of the raw material sheet forming the laminated sheet 30)
In the example shown in FIGS. 4 and 5, the raw material sheet forming the laminated sheet 30 has a three-layer laminated structure of at least a part of the first fiber sheet 2, the second fiber sheet 3, and the third fiber sheet 4. However, the three-layer structure constituting the raw material sheet may be a layer structure in which the second fiber sheet is replaced with the third fiber sheet. The raw material sheet may have a two-layer structure in which the second fiber sheet is removed, or a two-layer structure in which the first fiber sheet and the second fiber sheet are removed. May be.

When the fabric 1 is used as a material for forming the body mounting portion 11 of the disposable underwear 10, the raw material sheet has liquid diffusibility with respect to body fluids (for example, urine, sweat, blood, lymph). Thus, it is preferable to use a sheet containing a cellulose-based component as the third fiber sheet 4, such as paper or an airlaid nonwoven fabric. In addition, the first fiber sheet 2 and the second fiber sheet 3 are preferably made of a hydrophilic nonwoven fabric in order to have air permeability in relation to sweat generated from the body. Specifically, paper is used as the third fiber sheet 4, and any one of thermal bond nonwoven fabric, spunlace nonwoven fabric, spunbond nonwoven fabric and the like is used as the first fiber sheet 2 and the second fiber sheet 3, respectively. It is preferable. In addition, from the viewpoint of air permeability, paper can be used as the first fiber sheet 2 and the second fiber sheet 3, but either the first fiber sheet 2 or the second fiber sheet 3 is a non-woven fabric. Is preferred. On the other hand, if all of the first fiber sheet 2, the second fiber sheet 3, and the third fiber sheet 4 are paper in the fabric 1, there is a risk that a collapsed portion may occur in the fabric 1 when the fabric 1 absorbs body fluid. Is not preferable.

(Joining of raw material sheets forming the laminated sheet 30)
4 and 5, it is preferable that the second fiber sheet 3 and the third fiber sheet 4 forming the raw material sheet are partially joined to each other. The non-joining part formed between the 2nd fiber sheet 3 and the 3rd fiber sheet 4 as shown in FIG. 6 because the 2nd fiber sheet 3 and the 3rd fiber sheet 4 are joined partially. Thus, the space 9 can be formed. And since such a space 9 is formed, the dough 1 becomes more excellent in moisture transpiration, heat dissipation, and moisture permeability. In addition, in FIG. 6, only the 2nd fiber sheet 3 and the 3rd fiber sheet 4 are shown among the structures of the fabric 1 for convenience of explanation.

Moreover, in the example of FIG. 4, FIG. 5, the 1st fiber sheet 2 and the 3rd fiber sheet 4 which form a raw material sheet | seat are partially joined via the elastic member 5, as shown in FIG. . In this way, the first fiber sheet 2 and the third fiber sheet 4 are partially joined, so that the space 40 is formed by the non-joined portion formed between the first fiber sheet 2 and the third fiber sheet 4. Can be formed. And by forming such a space 40, the dough 1 becomes more excellent in moisture transpiration, heat dissipation and moisture permeability.

(Joint of elastic member 5 to raw material sheet forming laminated sheet 30)
For example, after the second fiber sheet 3 and the third fiber sheet 4 are partially joined and integrated so that a part where the second fiber sheet 3 and the third fiber sheet 4 are joined and a part which is not joined are formed, The first fiber sheet 2 is joined to the laminate with the elastic member 5 interposed. By carrying out such joining, a laminated integrated structure of the first fiber sheet 2, the third fiber sheet 4, and the second fiber sheet 3 is formed. As a result, the raw material sheet is formed. Moreover, the elastic member 5 is interposed between the first fiber sheet 2 and the third fiber sheet 4 so that the elastic member 5 is joined to the raw material sheet, and the laminated sheet 30 is formed. Will be.

(Method of joining elastic member 5 to raw material sheet, method of joining second fiber sheet 3 and third fiber sheet 4)
As a method for joining the elastic member 5 to the raw material sheet, adhesion, thermal fusion, ultrasonic bonding, or the like is used, but adhesion is preferable from the viewpoint of ease of work. Moreover, as a joining method of the 2nd fiber sheet 3 and the 3rd fiber sheet 4 which form a raw material sheet, the method which can be used as a joining method of the elastic member 5 with respect to a raw material sheet can be selected suitably.

When bonding is adopted as the bonding method of the elastic member 5 to the raw material sheet and the bonding method of the second fiber sheet 3 and the third fiber sheet 4, it is preferable to use a hot melt adhesive as the adhesive. In order to partially join the second fiber sheet 3 and the third fiber sheet 4 using a hot melt adhesive, as shown in FIGS. 5 and 6, the hot melt adhesive is applied to the third fiber sheet 4. It is partially applied (or a hot melt adhesive may be partially applied to the second fiber sheet 3), and both are laminated and joined together. At this time, a non-adhesive portion 8 where the adhesive layer 7 does not exist is formed between the second fiber sheet 3 and the third fiber sheet 4, and a space 9 is formed by the non-adhesive portion 8. As described above, the structure in which the space 9 is formed by the non-bonded portion 8 improves each function of moisture transpiration, heat dissipation, and moisture permeability in the fabric 1. Also, since the elastic member 5 is interposed between the first fiber sheet 2 and the third fiber sheet 4, by joining the first fiber sheet 2 and the third fiber sheet 4 at the location of the elastic member 5, Partial joining of the first fiber sheet 2 and the third fiber sheet 4 is performed. That is, as shown in FIG. 5, a hot melt adhesive is sprayed and applied to the peripheral surface of a plurality of elastic members 5 arranged in parallel at predetermined intervals, and the elastic member to which this hot melt adhesive is applied. 5 is positioned between the surface of the third fiber sheet 4 and the first fiber sheet 2, and the elastic member 5 is sandwiched and laminated between them to be joined and integrated. As shown in FIG. 7, the opposing surfaces of the first fiber sheet 2 and the third fiber sheet 4 where the elastic member 5 does not exist are non-adhesive portions, and a space 40 is formed by the non-adhesive portions. As described above, the structure in which the space 40 is formed by the non-bonding portion improves each function of moisture transpiration, heat dissipation, and moisture permeability in the fabric 1.

(Uneven row 6 and collar 60)
In the fabric 1, as shown in FIGS. 2 to 4, a plurality of convex portions 6 a and concave portions 6 b are formed, and an uneven surface is formed on the fabric 1. In the fabric 1, a concavo-convex row 6 is formed that includes convex portions 6 a and concave portions 6 b that are alternately and continuously formed along the longitudinal direction of the fabric 1. A plurality of the concavo-convex rows 6 are formed side by side in a direction crossing the longitudinal direction of the fabric 1 along the surface direction of the fabric 1 (Y direction orthogonal to the longitudinal direction (X direction) of the fabric 1 in the example of FIG. 1). And at least one part of the adjacent uneven | corrugated row | line | column 6 is formed with the clearance gap between each other. The portion where the gap is formed corresponds to the installation position of the elastic member 5 in the plan view of the fabric 1. In the fabric 1, such a plurality of uneven rows 6 form the heel portion 60. In order to allow the fabric 1 to be used as a disposable underwear 10 from one end to the other end along the longitudinal direction without waste, the uneven rows 6 are arranged in a row from one end to the other end along the X direction in FIGS. Preferably it extends.

In the fabric 1, the convex part 6a and the concave part 6b forming the collar part 60 are formed so as to be deformable in accordance with the stretching force of the plurality of elastic members 5 joined to the raw material sheet.

(Formation pattern of flange 60)
In the dough 1, the formation pattern of the ridge portion 60 is determined by the size and pitch of the convex portions 6a and the concave portions 6b, the width of the concave and convex rows 6, the non-uniformity of the convex portions 6a and the concave portions 6b, and the like. And various conditions such as the arrangement condition of the elastic member 5 are determined.

For example, when the elastic member 5 is a linear elastic body 5a, as shown in FIGS. 1 and 2, the linear elastic body 5a extends in the linear direction in the longitudinal direction of the fabric 1 (FIGS. 1 and 2). 2 in the same direction as the X direction), and a large number of linear elastic bodies 5a are arranged in parallel at predetermined intervals. That is, a large number of linear elastic bodies 5a are arranged at intervals in the Y direction, and a linear elastic body row is formed. The intervals at which the linear elastic bodies 5a are provided in the Y direction may be substantially equal. For example, the linear elastic bodies 5a may be densely arranged by shortening the intervals in the periphery of the fabric 1. . Further, the interval may be gradually shortened from the center portion to the peripheral portion of the fabric 1. Instead of this, or in combination with this, the elastic force of the linear elastic body 5a in the peripheral part of the fabric 1 and the elastic force of the linear elastic body 5a in the central part of the cloth 1 are made different, and the peripheral part The elastic force of the linear elastic body 5a may be made stronger than the elastic force of the central linear elastic body 5a. In the present embodiment, the peripheral portion of the fabric 1 is a range of about 5 to 30% from one end in the Y direction to the center in FIG. 1, and from the other end in the Y direction to the center. The range is about 5 to 30%, and the central part is the range excluding the peripheral part.

In the fabric 1, as shown in FIG. 5, a plurality of linear elastic bodies 5 a are provided at predetermined intervals between the first fiber sheet 2 and the third fiber sheet 4, and adjacent lines The space between the elastic bodies 5a may be set as appropriate. That is, the number of the linear elastic bodies 5a per unit area can be set arbitrarily. However, if the number of the linear elastic bodies 5a is increased and the interval between the adjacent linear elastic bodies 5a is reduced, the convex portions 6a and the concave portions 6b in the one row of the concavo-convex rows 6 can be finely formed. Not only can the number of recesses serving as bodily fluid passages be increased, but the shape can be maintained. Thereby, the shape of the heel portion 60 is not lost, which is preferable from the viewpoint of increasing the flexibility, moisture transpiration, heat dissipation, and moisture permeability of the fabric 1. For this purpose, the interval between the flange portions 60, that is, the pitch interval between the convex portions 6a is preferably 2.00 mm to 7.00 mm. The pitch interval between the convex portions 6a is more preferably 3.00 mm to 6.25 mm. By narrowing the pitch interval between the convex portions 6a, fine wrinkles can be made, so that the appearance is beautiful, and the contact area with one skin per wrinkle is reduced, so that the touch is improved and the unit volume is further increased. Since the surface area per hit is increased, the absorbability of body fluid is improved. On the other hand, by widening the pitch interval between the convex portions 6a, the elastic force of the linear elastic body 5a can be moderately suppressed, and the manufacturing cost can be reduced.

In FIG. 2, the convex portions 6a and the concave portions 6b forming the adjacent concave and convex rows 6 are formed so that the convex portions 6a and the concave portions 6b forming the respective concave and convex rows 6 are continuously connected in the Y direction. However, the convex portion 6a and the concave portion 6b may be discontinuous depending on the number of the linear elastic bodies 5a, the manner of arrangement, and the like. Moreover, the uneven | corrugated row | line | column 6 may be formed in the state which the formation position of the convex part 6a and the recessed part 6b which form an adjacent uneven | corrugated row | line | column shifted | deviated to the X direction mutually. In such a case, the collar part 60 has a part where the convex part 6a and the concave part 6b which form the adjacent uneven | corrugated row | line | column 6 become discontinuous in a Y direction. That is, the collar part 60 is formed in the pattern which formed the convex part 6a and the recessed part 6b nonuniformly.

(Print layer 4a in the case where fabric 1 is used as disposable underwear 10)
When the fabric 1 is used for the disposable underwear 10, the printing layer 4a (see FIG. 4) may be formed in advance on the paper that becomes the third fiber sheet 4 from the viewpoint of improving the design. The print layer 4a can be formed by appropriately printing on paper.

(Manufacturing method of dough 1)
Next, an example of a method for manufacturing the fabric 1 when the linear elastic body 5a is used as the elastic member 5 and a hot melt adhesive is used as the adhesive will be described. In this example, paper is used as the third fiber sheet 4, and non-woven fabric (for example, thermal bond) is used as the first fiber sheet 2 and the second fiber sheet 3.

First, paper as the third fiber sheet 4 is fed out from the wound body. When the fabric 1 is used for the body attachment portion 11 of the disposable undergarment 10, a print layer 4a (see FIG. 4) may be formed on the third fiber sheet 4 in advance to perform various prints.

The fed paper (third fiber sheet 4) is passed through an embossing roll, and mechanically softened by being pressed between the rolls. This mechanical softening process may be an embossing process using a flat roll or an embossing process using a meshing roll having a large number of protrusions on the roll surface. In the latter embossing process, many fine holes are opened in the paper. In this case, when the hot melt adhesive is partially sprayed on the paper after the embossing treatment, the hot melt adhesive penetrates into the fine holes, so that the ease of adhesion to the second fiber sheet 3 can be improved. it can. It should be noted that machining other than embossing may be employed, and a plurality of embossing apparatuses may be provided to perform embossing a plurality of times. In this case, the same embossing apparatus may be used, but for example, a plurality of embossing apparatuses having different embossing directions may be used, or a plurality of embossing apparatuses having different embossing shapes and sizes may be used. By performing the embossing, the flexibility of the third fiber sheet 4 is improved, and the touch can be improved.

On the other hand, the second fiber sheet 3 is fed out from another wound body, and the second fiber sheet 3 and the paper (third fiber sheet 4) to which the hot melt adhesive is applied are passed through a flat roll. The two are laminated together. In this case, the second fiber sheet 3 and the third fiber sheet 4 are partially joined.

Further, a large number of linear elastic bodies 5a are fed out from a wound body in which a large number of linear elastic bodies 5a are wound in parallel. The linear elastic body 5a is drawn out in a state of being pulled with a predetermined pulling force, and a hot melt adhesive is sprayed on the drawn-out linear elastic body 5a. In this case, the adhesive is sprayed continuously over the entire length of the linear elastic body 5a. The adhesive is applied to the entire peripheral surface of the linear elastic body 5a.

On the other hand, the first fiber sheet 2 is fed out from the wound body around which the first fiber sheet 2 is wound, and the first fiber sheet 2 is opposed to the third fiber sheet 4 joined to the second fiber sheet 3. The linear elastic body 5a to which the adhesive is applied is supplied so as to be fed between the first fiber sheet 2 and the third fiber sheet 4.

The third fiber sheet 4 and the first fiber sheet 2 joined to the second fiber sheet 3 are passed through a flat roll with the linear elastic body 5a sandwiched between them. Thereby, the 2nd fiber sheet 3, the 3rd fiber sheet 4, the linear elastic body 5a, and the 1st fiber sheet 2 are pressure-bonded by a flat roll, and are laminated and integrated. In this case, since the 1st fiber sheet 2 and the 3rd fiber sheet 4 are joining via the linear elastic body 5a, both are joined partially. In this way, the laminated sheet 30 in which the second fiber sheet 3 and the third fiber sheet 4 are partially bonded and the first fiber sheet 2 and the third fiber sheet 4 are partially bonded is manufactured. The In addition, you may pass the lamination sheet 30 through an embossing roll as needed, and may perform a mechanical softening process. By performing this treatment, the flexibility of the fabric 1 can be further improved. In addition, as a method of applying the adhesive partially, a method of applying in a line shape, a dot shape, a stripe shape, a spiral shape, a block shape, a pattern shape, and the like can be given, and one of them is used. Alternatively, a plurality of methods may be used in combination.

Since the manufactured laminated sheet 30 has a long dimension, cutting is performed to make the length dimension of the laminated sheet 30 in the longitudinal direction (X direction in FIGS. 1 and 2) a predetermined length. In this cutting, the first fiber sheet 2, the second fiber sheet 3, the third fiber sheet 4, and the linear elastic body 5a are cut. By cutting the linear elastic body 5a, the linear elastic body 5a that has been in a tensile state is released from the tensile force and contracts due to the restoring force. Due to the shrinkage stress at this time, the laminated sheet 30 composed of the first fiber sheet 2, the second fiber sheet 3, and the third fiber sheet 4 receives a force in a direction in which the length becomes shorter. A surface is formed, whereby a plurality of uneven rows 6 (ridges 60) are formed. In this way, the fabric 1 having the heel part 60 is manufactured.

Elasticity is given to cloth 1 by linear elastic body 5a arranged inside cloth 1. Accordingly, when the fabric 1 is pulled in the X direction of FIGS. 1 and 2, the linear elastic body 5a is stretched to expand the fabric 1, and when this state is released, the linear elastic body 5a is restored by its restoring force. The fabric 1 is contracted, and the cloth 1 is restored to its original dimension. Thus, the fabric 1 has stretchability. Therefore, when the fabric 1 is used as the body attachment portion 11 of the disposable underwear 10, the body attachment portion 11 covers the subject body when the disposable underwear 10 is attached to an object (for example, a person, an animal, etc.). Therefore, the fit to the body (for example, the waistline) is excellent.

When the fabric 1 is used as the torso mounting portion 11 of the disposable underwear 10 as in the present embodiment, for example, body fluids (for example, urine, sweat, blood, lymph fluid, etc.) discharged from a target to which the disposable underwear 10 is to be mounted. It is preferable to make the fabric 1 water-repellent so that it does not touch the subject's body. On the other hand, the fabric 1 can be used as the surface material 15 (see FIG. 9) of the absorbent body 14 that can be attached to and detached from the body mounting portion 11 of the disposable underwear 10, for example. It is preferable to make the dough 1 hydrophilic so that it can be easily absorbed by 14. When the fabric 1 is made water-repellent, a water-repellent treatment is performed by coating a silicone-based, paraffin metal-based or alkylchromic chromoid-based water-repellent agent. What is necessary is just to perform hydrophilic treatment, such as adding a hydrophilizing agent. In this case, if the material of each layer constituting the fabric 1 (laminated sheet 30) is made the same, a reduction in manufacturing cost can be expected. If the material such as nonwoven fabric is changed according to hydrophilicity and water repellency, it can be used according to various applications. In addition, an optimal laminated sheet 30 can be provided.

When a water-repellent nonwoven fabric is used as at least one of the first fiber sheet 2 and the second fiber sheet 3, a spunbond nonwoven fabric, an SMS nonwoven fabric, an SSMMS nonwoven fabric, an olefin fiber nonwoven fabric, or the like can be used. The basis weight of each of the first fiber sheet 2 and the second fiber sheet 3 is preferably 10 to 50 g / m ² as an example. Moreover, when using a hydrophilic nonwoven fabric as at least one of the 1st fiber sheet 2 and the 2nd fiber sheet 3, as a hydrophilic fiber, it is a vinyl alcohol type from the point of adhesiveness with a hydraulic composition, for example. Fibers and hydrophilized polypropylene fibers can be used. The basis weight of each of the first fiber sheet 2 and the second fiber sheet 3 is preferably 10 to 50 g / m ² as an example. Even when a nonwoven fabric suitable for hydrophilicity or water repellency is used, it is preferable to perform the above-described hydrophilic treatment or water repellency treatment.

One of the first fiber sheet 2 and the second fiber sheet 3 is a material (raw material) suitable for hydrophilic or water-repellent use, and the other of the first fiber sheet 2 and the second fiber sheet 3 is hydrophilic or water-repellent. Regardless of the application, a material (raw material) common to one of the first fiber sheet 2 and the second fiber sheet 3 may be used. For example, when the fabric 1 is applied to the body mounting portion 11, the first fiber sheet 2 positioned on the skin surface side is a hydrophilic nonwoven fabric, and the second fiber sheet 3 positioned on the non-skin surface side is water repellent. It is good also as a non-woven fabric. Alternatively, on the contrary, the first fiber sheet 2 may be water repellent and the second fiber sheet 3 may be hydrophilic. By using a hydrophilic nonwoven fabric for either the first fiber sheet 2 or the second fiber sheet 3, the transpiration of the fabric 1 can be improved.

When paper is used as the third fiber sheet 4, pulp paper or paper formed from a material whose main material is pulp can be used. Wood pulp, synthetic pulp, waste paper pulp, etc. can be used as raw material pulp. Moreover, it is not restricted to natural fibers such as pulp, and regenerated fibers such as rayon can also be used. The basis weight of the third fiber sheet 4 is preferably 10 to 50 g / m ² as an example.

(Fabric 1 ')
FIG. 8 is a cross-sectional view (a diagram corresponding to FIG. 5 of the fabric 1) used as the surface material 15 (see FIG. 9) of the absorbent body 14 that can be attached to and detached from the body mounting portion 11. As can be seen by comparing FIG. 8 and FIG. 5, the fabric 1 ′ has a configuration in which the first fiber sheet 2 is omitted from the fabric 1 of FIG. 5. The fabric 1 ′ has an elastic member 5 like the fabric 1, and has elasticity like the fabric 1, and therefore has an excellent fit to the body when used as the surface material 15 of the absorbent body 14. It becomes.

When the fabric 1 ′ is used as the surface material 15 of the absorbent body 14, it is preferable to make the fabric 1 ′ hydrophilic so that body fluid is easily absorbed by the absorbent body 14, for example. In this case, the dough 1 ′ is subjected to a hydrophilic treatment such as adding a hydrophilizing agent.

Note that when the fabric 1 ′ is used as the surface material 15 of the absorbent body 14, the formation of the print layer 4 a (see FIG. 4) on the third fiber sheet 4 may be omitted.

When the fabric 1 ′ is used as the surface material 15 of the absorbent body 14, the second fiber sheet 3 is in contact with a fiber assembly made of pulp fibers or the like, or an absorbent body 14 made of a water absorbent polymer. For this reason, instead of the 2nd fiber sheet 3, you may use the paper material excellent in liquid permeability rather than the nonwoven fabric. Further, the elastic member 5 may be disposed between the second fiber sheet 3 and the third fiber sheet 4. In this case, the second fiber sheet 3 and the third fiber sheet 4 are bonded via the elastic member 5 in the same manner as the first fiber sheet 2 and the third fiber sheet 4 of the fabric 1. May be. Note that it is desirable that the fabric 1 ′ is subjected to mechanical softening treatment on the third fiber sheet 4.

The method for manufacturing the fabric 1 ′ is a method that excludes the processing related to the first fiber sheet 2 from the method for manufacturing the fabric 1 described above. Further, the surface material 15 is manufactured by cutting the dough 1 ′.

(Disposable underwear 10)
9 and 10 are views showing the disposable underwear 10 of the present embodiment. As will be described later, the disposable underwear 10 of the present embodiment can be attached (attached) from an open state as shown in FIG. 9, and is attached (attached) from a pants state as shown in FIG. You can also.

As shown in FIG. 9, the disposable undergarment 10 includes a body mounting portion 11 that has been subjected to water repellent treatment, and an absorber 14 that can be attached to and detached from the body mounting portion 11. The absorber 14 is provided with a surface material 15 that has been subjected to a hydrophilic treatment.

The trunk portion mounting portion 11 has a sheet shape that expands and contracts along the longitudinal direction (first direction), and can be expanded and extended with respect to the periphery of the subject barrel and is mounted on the trunk portion. The body mounting portion 11 is formed by cutting the fabric 1 and then folding back the upper end portion to form the folded portion 12. The central portion in the longitudinal direction of the folded portion 12 is not joined so that the absorber 14 can be inserted, and is joined at both ends (peripheral portions) in the longitudinal direction. Thereby, the pocket part (accommodating part) which accommodates the longitudinal direction one end part (upper end part of FIG. 9) of the absorber 14 in the center part of the folding | turning part 12 is formed. Various joining methods can be applied as the joining method of the peripheral portion, but in this embodiment, joining by ultrasonic joining or hot-melt adhesive is applied.

Further, in the vicinity of both end portions in the longitudinal direction of the body mounting portion 11, engagement portions 13 for adjusting the dimensions of the body periphery are provided. As shown in FIG. 10, the engaging portion 13 engages with the non-skin surface side (the side opposite to the side where the surface material 15 is provided) of the absorber 14. The engaging portion 13 may be anything as long as it can repeatedly engage with the absorbent body 14, in addition to an adhesive tape (for example, double-sided tape) and a hook-and-loop fastener, and other mechanical engagement methods. A mating member or mechanism may be used.

In FIG. 9, a total of four engaging portions 13 are provided, two in the vicinity of one end portion and the other end portion in the longitudinal direction of the body mounting portion 11. However, the number and size of the engaging portions 13 are not limited to the example shown in FIG. 9 and may be any method as long as the dimensions of the waistline can be adjusted. For example, the size of the engaging portion 13 may be set to a size that fits within the width of the folded portion 12.

In this example, as is apparent from FIG. 9, it is assumed that the elastic member 5 is not provided at the upper end portion (near the mountain fold line) of the folded portion 12 of the fabric 1 used for the body mounting portion 11. . As will be described later, the upper end portion of the folded-back portion 12 serves as a portion where the absorber 14 is joined. Therefore, by not providing the elastic member 5 at this portion, the elastic member 5 can be expanded and contracted by the elastic member 5. Can be prevented. By not generating wrinkles in the absorbent body 14, it is possible to reduce or eliminate the uncomfortable feeling that occurs around the back and waist when the disposable underwear 10 is worn. Depending on the elastic force of the elastic member 5, the elastic member 5 may be provided also at the upper end portion of the folded portion 12.

As described above, the body mounting portion 11 includes the first fiber sheet 2, the elastic member 5, the third fiber sheet 4, and the second fiber sheet 3 from the skin surface side, and printing is performed on the third fiber sheet 4. Is applied to form the printed layer 4a (see FIG. 4). In this embodiment, since the inside of the 2nd fiber sheet 3 (for example, nonwoven fabric) is the 3rd fiber sheet 4, when visually recognizing from the outside, the printed layer 4a of the disposable underwear 10 is easy to see.

The absorbent body 14 has a longitudinal direction in a direction intersecting the longitudinal direction (first direction) of the body mounting portion 11 (a direction orthogonal to the second direction in FIG. 9 and a second direction), and one end portion in the longitudinal direction (the upper end in FIG. Part) is joined to a position excluding both ends in the longitudinal direction of the body mounting part 11 (the center part in FIG. 9). Moreover, the engaging part 13 provided in the trunk | drum mounting part 11 can be detachably engaged with the non-skin-surface side of the other end part of the longitudinal direction of the absorber 14. FIG. The absorber 14 covers the crotch of the subject in a state where the subject wears the disposable underwear 10.

The absorber 14 absorbs body fluid (for example, urine, sweat, blood, lymph fluid, etc.) discharged from the subject to which the disposable undergarment 10 is worn, and the upper end of the absorber 14 in FIG. It is inserted into the pocket formed at the center. A bonding member 16 such as a tape (see FIG. 11A) is provided on the non-skin surface side of the absorbent body 14, and the body mounting portion 11 and the absorbent body 14 are bonded by the bonding member 16. Can do. In addition, the detail about joining to the trunk | drum mounting part 11 and the absorber 14 is mentioned later. Thus, even if body fluid flows into the upper end portion of the absorbent body 14 by inserting the upper end portion of the absorbent body 14 into the pocket portion of the folded portion 12, the upper end portion of the absorbent body 14 is sandwiched between the pocket portions. Therefore, it is possible to suppress body fluid from being transmitted to the back of the subject (user).

In order to simplify the drawings, in FIG. 9 and FIG. 10, the illustration of the elastic member 5 of the surface material 15 provided in the absorber 14 is omitted, but the direction of the arrow indicated by the straight line in FIG. The elastic member 5 is provided along the vertical direction), and the surface material 15 and thus the absorber 14 expands and contracts in the direction of the arrow indicated by a straight line.

The disposable underwear 10 in which the absorber 14 is joined to the body mounting portion 11 has a T-shape as shown in FIG. Further, the body portion mounting portion 11 has a dimension in the arrow direction indicated by a straight line shorter than the dimension in the same direction of the absorber 14 and the surface material 15. In this embodiment, since it is not necessary to provide the cloth | cover which covers the absorber 52 in the crotch part (non-skin surface side) of the absorber 52, the cost can be suppressed. Moreover, since the absorber 14 is provided in the trunk | drum mounting part 11 so that attachment or detachment is possible, by exchanging the absorber 14, the trunk | drum mounting part 11 can be used repeatedly and is economical. In addition, since the trunk | drum mounting | wearing part 11 can endure several washings, the disposable underwear 10 of this embodiment is hygienic and economical also from this point.

An infant is suitable as a target to which the disposable underwear 10 of this embodiment is attached, but the target may be an adult or an animal such as a pet.

Note that the disposable undergarment 10 of the present embodiment is provided with the engaging portion 13, and therefore can be worn (opened) in an open state (expanded state) as shown in FIG. If the subject cannot be a baby or a care recipient, the disposable underwear 10 can be attached to the subject in the state shown in FIG. 9 (open state). On the other hand, the lower side of the absorber 14 is bent forward from the state of FIG. 9 (see the arrow indicating the folding direction), and the engaging portion 13 is engaged with the folded absorber 14 as shown in FIG. Pants. If the subject can stand, as shown in FIG. 10, the disposable underwear 10 is put into a pants state so that the subject wears the subject while standing in the same manner as normal pants or sitting on a chair (the subject is made to wear). can do.

* After wearing (wearing) the disposable underwear 10, the subject adjusts the position of one of the engaging portions 13 according to the body shape of the subject. For example, if the engaging portion 13 is adjusted along the horizontal direction (waist direction), the waist size can be adjusted by the expansion and contraction of the elastic member 5, and if the engaging portion 13 is adjusted along the vertical direction, The vertical mounting position of the body mounting portion 11 can be adjusted. Further, by adjusting the engaging portion 13 in an oblique direction, the waistline and the mounting position can be adjusted at a time. Thus, the disposable underwear 10 of this embodiment can be fitted according to the body shape of each object. Thus, in this embodiment, since the elastic member 5 can be expanded and contracted and the position of the engaging portion 13 can be adjusted, the margin for adjustment around the waist of the disposable underwear 10 is large. Or M size and L size can be combined. In this way, the disposable underwear 10 that is also used in two sizes can be realized.

Moreover, in this embodiment, the state of the absorber 14 can be confirmed in a state in which the subject wears the disposable underwear 10 by visually recognizing the portion where the absorber 14 is not covered by the body mounting portion 11, and the absorber The necessity of exchange of 14 can also be easily confirmed.

FIG. 11A is a diagram illustrating an example of a method of joining the body mounting portion 11 and the absorber 14. FIG. 11A is a view showing an example in which a tape is provided along the longitudinal direction on the non-skin surface side of the absorbent body 14 as the joining member 16. A hook-and-loop fastener may be provided along the longitudinal direction instead of the tape. In addition, as shown to Fig.11 (a), joining to the trunk | drum mounting part 11 and the absorber 14 is longitudinal so that the elastic member 5 of the absorber 14 may not inhibit the expansion-contraction in the longitudinal direction (vertical direction). The joining area (contact area) is preferably small along the direction. However, the present invention is not limited to this, and as shown in FIG. 11 (b), along the short direction (left-right direction) of the absorbent body 14, the body mounting portion 11 and the absorption with a larger joint area than FIG. 11 (a). The body 14 may be joined. Also in this case, a detachable joining method such as a tape or a hook-and-loop fastener can be used as appropriate.

Moreover, as shown in FIG.11 (c), while inserting the end (upper end) of the longitudinal direction of the absorber 14 in the pocket part of the folding | returning part 12, an absorber is below the folding | returning part 12 of the trunk | drum mounting part 11. FIG. 14 and the body mounting portion 11 may be joined by the joining member 16. In this case, the absorber 14 does not expand and contract in the longitudinal direction (vertical direction) at two locations joined by the joining member 16, but in other portions (above the joining member 16 and below the joining member 16). Since it expands and contracts in the longitudinal direction (vertical direction), the absorber 14 can be fitted to the object. In addition, the front-end | tip (upper end) of the absorber 14 is only inserted in the pocket part, and the elastic force of the elastic member 5 of the trunk | drum mounting part 11 does not act so much to the absorber 14. FIG. Therefore, wrinkles do not occur in the absorbent body 14 and the wearing comfort of the target can be improved. In addition, in FIG.11 (c), although the joining member 16 is provided in two places, you may provide in one place and may provide in three or more places.

Further, as shown in FIGS. 11D and 11E, the body mounting portion 11 and the absorber 14 may be indirectly joined. In the example of FIG. 11D and FIG. 11E, the body mounting portion 11 and the absorber 14 are indirectly joined via the interposed member 29. The intervening member 29 is preferably a member that does not have elasticity so that wrinkles do not occur in the absorbent body 14, and for example, a nonwoven fabric can be used. The interposition member 29 is desirably water-repellent. In order to give the interposition member 29 elasticity, the elastic member 5 may be applied. Even when the interposition member 29 is used, as described above, a detachable joining method such as a tape or a hook-and-loop fastener can be used.

Further, as shown in FIG. 11 (e), a cut may be formed in the interposition member 29. Thus, by providing the notch in the interposition member 29, the elastic force of the trunk portion mounting portion 11 is less likely to act on the absorber 14, and wrinkles are less likely to occur in the absorber 14. Note that the interposition member 29 may be provided in the folded portion 12 of the body mounting portion 11.

(Manufacturing method of the body mounting part 11)
FIG. 12 is a flowchart showing a method for manufacturing the body mounting portion 11 of the present embodiment. Hereinafter, the manufacturing method of the trunk | drum mounting part 11 is demonstrated based on FIG. Manufacture of the body mounting portion 11 is executed under the control of a control device (not shown) having a CPU (Central Processing Unit) and the like.

In step S1 of FIG. 12, the dough 1 is manufactured as described above. Here, in order to manufacture the fabric 1 for the body mounting portion 11, a water repellent treatment is performed by coating a water repellent. In addition to this, or instead of this, at least one of the first fiber sheet 2 and the second fiber sheet 3 may be made of a spunbond nonwoven fabric, an SMS nonwoven fabric, an SSMMS nonwoven fabric, an olefin fiber nonwoven fabric or the like to have water repellency. Good.

In the next step S2, the fabric 1 is cut. Specifically, the cloth 1 is cut by a cutting machine (not shown) according to the size of the body mounting portion 11.

In the next step S3, the folded portion 12 is formed. In this case, the folded portion is formed so that the upper end portion of the body portion mounting portion 11 cut in step S2 is folded back to the front side (skin surface side) by a predetermined amount and a pocket portion into which the absorbent body 14 is inserted is formed. 12 both ends (peripheral parts) in the longitudinal direction are joined using various joining methods such as ultrasonic joining and joining with a hot melt adhesive. In addition, when indirectly joining the trunk | drum mounting part 11 and the absorber 14, it replaces with manufacture of a pocket part and joins the interposed member 29 to the trunk | drum mounting part 11 by ultrasonic bonding or a hot-melt-adhesive. What is necessary is just to join by various joining methods, such as.

In the next step S4, the engaging portion 13 is attached to both ends in the longitudinal direction on the skin surface side of the trunk portion mounting portion 11. As the engaging portion 13, a member (such as an adhesive tape or a hook-and-loop fastener) that can be repeatedly attached to and detached from the absorber 14 can be employed. In addition, what is necessary is just to join using various joining methods, such as joining by ultrasonic bonding and a hot-melt-adhesive, when attaching a surface fastener to the trunk | drum mounting part 11. FIG. In addition, since the non-skin surface side of the absorber 14 is comprised with a moisture-permeable film, a hook-and-loop fastener is hard to engage. In such a case, a material that can be easily engaged with the hook-and-loop fastener may be provided in a portion where the hook-and-loop fastener engages. For example, the fabric 1 may be bonded to a part of the absorber 14 by ultrasonic bonding or hot melt bonding. In this case, the elastic member 5 may be omitted from the fabric 1, and the third fiber sheet 4 may be omitted. Instead of this, or in combination with this, either the first fiber sheet 2 or the second fiber sheet 3 may be omitted. In addition, what is necessary is just to set the magnitude | size and the number of the engaging parts 13 suitably.

(Absorber 14)
Next, the absorber 14 will be described in detail. The state which looked at the absorber 14 to which the surface material 15 was attached from the skin surface side is shown by FIG. FIG. 14 shows a state in which the absorber 14 is viewed from the non-skin surface side.

As shown in FIG. 14, a joining member 16 such as a tape is provided in the vicinity of one end portion in the longitudinal direction (X direction) on the non-skin surface side of the absorbent body 14. It is detachably joined to the mounting part 11 (see FIG. 11A, etc.). As described above, the surface material 15 is manufactured by cutting the dough 1 ′.

As shown in FIGS. 13 and 14, the absorbent body 14 includes a left gather portion 21 </ b> L provided on the skin surface side, a right gather portion 21 </ b> R, and a film 24 provided on the non-skin surface side. The absorber 14 has an absorber 22 provided on the skin surface side of the film 24, and the surface material 15 is provided on the skin surface side of the absorber 22.

The left gather part 21L and the right gather part 21R have a gather 17 and an inner collar part 19.

The gather 17 prevents leakage of urine in the Y direction (lateral leakage). The gather 17 has a nonwoven fabric and an elastic member similar to the elastic member 5. A part of the gather 17 and a part of the surface material 15 are bonded by a bonding method such as ultrasonic bonding, thermal fusion, or hot melt adhesive.

The inner collar portion 19 includes Y-direction end portions (a portion indicated by reference numeral “20”) of the left gather portion 21L and the right gather portion 21R, and a Y-direction end portion (a portion indicated by reference numeral “27”) of the film 24 of FIG. Are bonded to each other by thermal fusion or the like, and are formed in a portion that does not overlap the absorber 22 of the surface material 15 by the elastic force of the elastic member 5 of the surface material 15 (stretching force in the X direction). It is.

The absorption unit 22 is a well-known unit that absorbs bodily fluids discharged from a subject wearing the disposable underwear 10. The absorbent portion 22 includes an absorbent core having a fiber material containing a cellulose component (for example, paper or airlaid nonwoven fabric) and / or a super absorbent polymer (SAP). It is desirable to add a deodorant to the absorption part 22 for deodorizing excrement. As the deodorant, activated carbon, zeolite, silica, ceramic, Oya stone, charcoal polymer, carbon nanotube, carbon nanohorn, organic acid such as citric acid and succinic acid, alum (potassium alum) and the like can be used.

In addition, joining of the edge part 20 of the gather part 21 mentioned above and the edge part 27 of the film 24 is performed in the state which has arrange | positioned the absorption part 22 to the skin surface side of the film 24. FIG.

The film 24 is a well-known moisture-permeable film that transmits vapor without transmitting liquid, and the absorbing portion 22 is disposed inside the film 24.

The film 24 and the surface material 15 are bonded by ultrasonic bonding, hot melt bonding, or the like with the absorbing portion 22 interposed therebetween.

In addition, on the non-skin surface side of the film 24, as described above, a material that can easily engage the engaging portion 13 is provided so that the engaging portion 13 (for example, a hook-and-loop fastener) can be easily engaged. Also good.

As shown in FIG. 13, the absorbing portion 22 is partially joined to the surface material 15 by a plurality of surface material coupling portions 23. A plurality of surface material coupling portions 23 are arranged at predetermined intervals in the XY direction. In the example of FIG. 13, two rows in which four surface material coupling portions 23 are arranged at predetermined intervals along the X direction are provided at predetermined intervals in the Y direction. In the present embodiment, partial bonding between the absorbing portion 22 and the surface material 15 is performed by ultrasonic bonding. Instead of joining the absorbing portion 22 and the surface material 15, the absorbing portion 22 and the surface material 15 may be pressed by embossing in a state where the surface material 15 is provided on the absorber 14. Since the non-skin surface of the surface material 15 (for example, the third fiber sheet 4 excellent in liquid permeability) and the absorption portion 22 come into contact with each other by bonding or pressing between the absorption portion 22 and the surface material 15, body fluid is quickly removed. Can be guided to the absorption part 22. Moreover, since the surface material 15 becomes smooth by ventilation | gas_flowing by the space 9 shown in FIG. 6, it does not get steamed. Furthermore, the presence of the flange portion 6 in the laminated sheet 30 increases the surface area compared to the case where the flange portion 6 is not present. Thereby, even when there is much quantity of a bodily fluid, a bodily fluid can be rapidly guide | induced to the absorption part 22. FIG. Furthermore, since the elastic force of the elastic member 5 is not lost, the feeling of fitting and wearing is not reduced.

Furthermore, since a plurality of surface material coupling portions 23 are provided at predetermined intervals in the Y direction, entry of urine in the Y direction is prevented. Accordingly, the side leakage of urine can be prevented by the surface material bonding portion 23.

In the disposable underwear 10 of this embodiment, the absorbent body 14 provided with the surface material 15 is detachably joined to the trunk portion mounting portion 11 with a joining member 16 such as a tape. As is clear from FIGS. 9 and 10, the body mounting portion 11 is expanded and contracted in the left-right direction by the elastic member 5, and can be fitted to the target waist as described above. On the other hand, since the surface material 15 is expanded and contracted in the vertical direction (arrow direction) by the elastic member 5, the elastic force of the elastic member 5 acts on the portion that contacts the crotch of the object, and the surface material 15 fits the object. Furthermore, since the elastic force acts when the absorber 14 is likely to shift downward due to the weight of body fluid (such as urine), the absorber 14 can be prevented from shifting.

(Manufacturing method of the absorber 14)
FIG. 15 is a flowchart showing a method for manufacturing the absorber 14 provided with the surface material 15 of the present embodiment. The absorber 14 is manufactured under the control of a control device (not shown) provided with a CPU and the like.

In step S11 of FIG. 15, the dough 1 'is manufactured as described above. Here, since the fabric 1 ′ is used as the surface material 15, the hydrophilic treatment is performed on the fabric 1 ′. In addition to this, or instead of this, as the second fiber sheet 3, vinyl alcohol fiber or hydrophilic polypropylene fiber may be used.

In the next step S12, the surface material 15 is manufactured by cutting the dough 1 'in accordance with the dimensions of the absorber 14. In the next step S13, the elastic member is joined to the nonwoven fabric, and the gathers 17 are manufactured. In the next step S14, the gather 17 manufactured in step S13 is joined to the surface material 15.

In the next step S15, the absorption part 22 is supplied to the skin surface side of the film 24. In addition, you may provide the raw material which the engaging part 13 can engage easily on the non-skin surface side of the film 24 as mentioned above. Next, in step S <b> 16, the surface material 15 and the film 24 are joined in a state where the absorbing portion 22 is sandwiched.

Next, in step S17, the end 20 of the gather 17 and the end 27 of the film 24 are joined by, for example, heat sealing. In place of heat fusion, either one of the end portion 20 and the end portion 27 is bent to the other side, and then the gather 17 and the film 24 are joined by a hot melt adhesive or the like. Good.

Next, in step S18, the surface material 15 and the absorbing portion 22 are partially joined at the plurality of surface material coupling portions 23. Instead of partial joining, mechanical pressing such as embossing may be used. By the above, the absorber 14 provided with the surface material 15 can be manufactured. Note that the flowchart of FIG. 15 is merely an example, and the order of each step may be appropriately changed depending on manufacturing convenience. Further, the joining member 16 may be provided in the vicinity of one end portion in the X direction of the absorbent body 14 at an appropriate timing during the processing of FIG. 15 or after the processing of FIG.

(Method for forming disposable underwear 10)
The body mounting part 11 manufactured according to the flowchart of FIG. 12 and the absorbent body 14 manufactured according to the flowchart of FIG. 15 are joined by the joining member 16 (tape or the like) (FIG. 11 ( a) to FIG. 11 (e)), a disposable undergarment 10 is formed.

In addition, it sells in the state which the trunk | drum mounting part 11 and the absorber 14 isolate | separated, and a purchaser may join the trunk | drum mounting part 11 and the absorber 14 with the joining member 16. FIG.

The disposable underwear 10 of the first embodiment surrounds the entire circumference of the subject's trunk by the longitudinal end of the absorber 14 and the trunk mounting portion 11 in a state where the subject is wearing the disposable undergarment 10. It is out. Thereby, since the elasticity of the waist part of the disposable underwear 10 can be made high, the disposable underwear 10 can be easily or easily worn in a pants state. In addition, it is possible to improve the fit to the waistline (waist) when the disposable underwear 10 is worn.

In the first embodiment, a pattern or the like can be applied to the printing layer 4a of the body mounting portion 11 or the film 24 of the absorber 14. In this case, a disposable underwear with high designability can be realized by making the design of the body mounting portion 11 and the absorbent body 14 the same design or a unified design. Thereby, for example, the disposable underwear 10 does not look like a diaper or underwear, and even if a subject wearing the disposable underwear 10 goes out as it is, there is no sense of incongruity, and it is necessary to wear clothes, a diaper cover, etc. from above the disposable underwear 10. Since it disappears, it is possible to suppress stuffiness.

As mentioned above, although 1st Embodiment has been demonstrated, it cannot be overemphasized that it is not restricted to the said content and various changes and an appropriate combination are possible. For example, the arrangement of the linear elastic bodies 5a is not limited to a linearly extending one, but may be an intermittent linear elastic body 5a, and curved curved linear elastic bodies 5a are arranged in parallel. Alternatively, the linear elastic bodies 5a having a curved shape may be arranged in an irregular manner. In the arrangement of a large number of linear elastic bodies 5a, each linear elastic body 5a may be a combination of linear elastic bodies 5a having different expansion / contraction ratios. The elastic member 5 is not limited to a linear shape, and a sheet-like elastic body provided with a large number of holes or notches and having a predetermined air permeability can also be used.

Alternatively, the absorbent body 14 that is not provided with the surface material 15 may be joined to the body mounting portion 11 to form the disposable underwear 10.

In addition, although the 1st Embodiment demonstrated the case where the one end part (upper end part of FIG. 9) of the absorber 14 was joined to the center part of the longitudinal direction of the trunk | drum mounting part 11, it does not restrict to this. The absorber 14 may be bonded to a position excluding both ends in the longitudinal direction of the body mounting portion 11 and may not necessarily be bonded to the central portion in the longitudinal direction.

<< Second Embodiment >>
Hereinafter, the second embodiment will be described in detail with reference to FIGS.

FIG. 16 is a view showing a pants state of the disposable underwear 110 according to the second embodiment, and FIG. 17 is a view of a state (open state) in which the disposable underwear 110 is unfolded as viewed from the non-skin surface side. . FIG. 18 is a view (partially omitted) of a state (open state) in which the disposable underwear 110 is unfolded as viewed from the skin side.

The disposable underwear 110 according to the second embodiment includes the body mounting portion 51 and the absorbent body 52 as well as the engagement fabric 53 as in the first embodiment.

The body mounting portion 51 is made of a stretchable fabric 1 as in the first embodiment, and extends, for example, in the lateral direction of FIG. Moreover, in the trunk | drum mounting | wearing part 51, as shown in FIG. 18, the edge part (upper end part of FIG. 18) is turned back and joined by predetermined length, and the waist part 55 is formed. In the present embodiment, in a state where the trunk portion mounting portion 51 is extended in the longitudinal direction, one end portion (the upper end portion in FIG. 18) of the absorbent body 52 is overlaid on the waist portion 55, and in this state, the absorbent body 52 is placed on the trunk portion. The attachment part 51 is joined detachably or non-detachably. In addition, about the attachment method of the absorber 52, it mentions later as description of the formation method of the disposable underwear 110.

As shown in FIG. 18, the skin surface side of the end portion (upper end portion in FIG. 18) of the absorbent body 52 joined to the body mounting portion 51 is covered with a fabric piece 56. The cloth piece 56 is, for example, a non-woven fabric, and is joined to the waist portion 55 in a state where the end portion of the absorbent body 52 is sandwiched between the waist portion 55. Engaging portions (surface fasteners) 54 are joined to both ends of the body mounting portion 51, respectively.

As shown in FIG. 18, the body mounting portion 51 has an oblique shape from the boundary with the absorber 52 to both ends of the body mounting portion 51 (near the portion where the engaging portion 54 is attached). Thereby, for example, it is possible to easily fit the torso mounting portion 51 to an object in which the abdomen is raised (for example, when the object is an infant).

The absorber 52 absorbs the bodily fluid discharged from the object, like the absorber 14 in the first embodiment. The absorbent body 52 is joined to the body mounting part 51 in a detachable or non-detachable manner in a state where the end in the longitudinal direction (the end on the upper side in the drawing in FIG. 18) is overlapped with the body mounting part 51. . Specifically, as shown in FIG. 19 (b), the absorber 52 is joined to the body mounting portion 51 at three joint portions 59 spaced apart in the short direction of the absorber 52, In FIG. 19 (b), the body side mounting portion 51 is joined at the short side portion 58 located above the joining portion 59. On the other hand, as shown in FIG. 17, an engagement fabric 53 is affixed to the end of the absorbent body 52 on the side opposite to the side to be joined to the body mounting portion 51 and on the non-skin surface side. Since the short side portion 58 of the absorber 52 is joined to the trunk portion mounting portion 51 in a state in which the trunk portion mounting portion 51 is stretched, when the stretched state of the trunk portion mounting portion 51 is released, the absorber 52 The short side portion 58 on the waist portion 55 side is contracted to form a heel. This wrinkle forms a space between the subject wearing the disposable underwear 110 and the absorbent body 52, and excrement such as stool is induced along this wrinkle, particularly when the subject is sleeping. . Thereby, since excrement, such as stool, is accommodated in the space, leakage from the disposable underwear 110 can be suppressed.

As shown in FIG. 17, the engagement fabric 53 is, for example, a non-woven fabric or the fabric 1 and is attached to the non-skin surface side of one end of the absorbent body 52. The engagement fabric 53 engages with an engagement portion 54 (for example, a hook-and-loop fastener) provided on the body mounting portion 51. Note that the type of the engagement fabric 53 may be changed according to the type of the hook-and-loop fastener 54 or may not be provided.

In the second embodiment, since the disposable underwear 110 has the above-described configuration, the absorbent body 52 is covered on the crotch portion (non-skin surface side) of the absorbent body 52 as in the first embodiment. There is no need to provide dough, and the cost can be reduced.

Also in the second embodiment, as in the first embodiment, as shown in FIG. 16, the disposable underwear 110 is put into a pants state, and the disposable underwear 110 in a pants state is made like a normal pant, It can be worn while the subject is standing or sitting on a chair or the like. Then, by adjusting the engaging position between the engaging portion 54 and the engaging fabric 53 while pulling the trunk mounting portion 51, the trunk mounting portion 51 can be fitted to the target trunk.

In addition, the joining in the second embodiment employs an appropriate method among joining with an adhesive (for example, hot melt adhesive), thermal fusion, ultrasonic joining, stitching, mechanical locking, and the like. be able to.

(Method for forming disposable underwear 110)
FIG. 19A and FIG. 19B are views for explaining a method of forming the disposable undergarment 110 according to the second embodiment. FIG. 19A is a diagram illustrating a state in which the waist portion 55 is formed in the trunk portion mounting portion 51. As shown in FIG. 19 (a), the end portion of the fabric 1 forming the body mounting portion 51 is folded back by a predetermined length at a location indicated by a two-dot chain line, and the overlapping surfaces are joined to each other to join the waist portion. 55 is formed.

FIG. 19 (b) is a diagram showing a state where the absorber 52 is attached to the body mounting portion 51. As shown in FIG. 19B, the body mounting portion 51 in which the waist portion 55 is formed is extended in the lateral direction indicated by the arrow, and in this state, the end of the absorber 52 (the upper end of FIG. 19B) Part) is overlapped with the waist part 55, and the absorber 52 is joined to the trunk part mounting part 51 at the overlapped position. As described above, the joint portions are the three joint portions 59 and the short side portion 58.

Further, in a state where the trunk portion mounting portion 51 is extended, a fabric piece 56 (see FIG. 18) is joined to the waist portion 55 so as to cover the end portion of the absorber 52. Thereby, since the edge part of the absorber 52 can be covered, the appearance and the feeling of touch can be improved.

After the absorbent body 52 and the fabric piece 56 are joined to the body mounting part 51, the stretched state of the body mounting part 51 is released. Thereby, as shown in FIG. 18, the edge part by the side of the waist part 55 of the absorber 52 contracts, and a wrinkle is formed.

The above-described embodiment is an example of a preferred embodiment of the present invention. However, the present invention is not limited to this, and various modifications can be made without departing from the scope of the present invention.

US provisional application 62 / 289,609 filed on February 1, 2016, US provisional application 62 / 416,940 filed on November 3, 2016, US provisional application 62 / 418,489 filed on November 7, 2016 The contents included in are all incorporated herein by reference.

1 fabric 1 'fabric 2 1st fiber sheet 3 2nd fiber sheet 4 3rd fiber sheet 5 3 elastic member 6 elastic part 10 disposable underwear 11 trunk mounting part 12 folding part 13 engaging part 14 absorber 15 surface part 21 gathering part 24 film 30 laminated sheet 51 trunk mounting part 52 absorber 54 engaging part 55 waist part 56 fabric piece 58 short side part 59 joint part 110 disposable underwear

Claims

A body part mounting portion that has a first shape as a longitudinal direction and has a sheet shape that expands and contracts along the first direction.
The second direction intersecting the first direction is a longitudinal direction, and one end portion of the second direction is joined to a position excluding both ends of the trunk portion mounting portion in the first direction, and the other end portion in the second direction. An absorbent body that covers the crotch portion in a state where both ends in the first direction of the torso attaching part are detachably joined, and the torso attaching part is attached to the torso,
An absorbent article comprising:
2. The device according to claim 1, wherein, in a state where the trunk portion mounting portion is mounted on the trunk portion, the entire circumference of the trunk is surrounded by the other end portion of the absorber in the second direction and the trunk portion mounting portion. Absorbent articles.
The absorbent article according to claim 1, wherein one end portion of the absorbent body in the second direction is detachably joined to the body mounting portion.
The absorbent article according to claim 1, wherein the trunk portion mounting portion is a laminated sheet in which a first nonwoven fabric, paper, an elastic member, and a second nonwoven fabric are laminated.
The absorptive article according to claim 1 provided with an engaging part which is provided in both ends in said 1st direction of said body part mounting part, and engages with the other end part of said 2nd direction of said absorber.
2. The absorption according to claim 1, further comprising an accommodating portion formed so as to fold back an edge portion extending in the first direction of the trunk portion mounting portion by a predetermined width and accommodate one end portion of the absorber in the second direction. Sex goods.
The absorbent article according to claim 1, wherein the absorber expands and contracts along the second direction.
The absorbent article according to claim 5, wherein the other end portion of the absorbent body in the second direction is provided with an engaging fabric that engages with the engaging portion provided in the body mounting portion.
The absorbent article according to claim 1, wherein the body mounting portion is provided with a fabric piece that covers one end of the absorbent body joined to the body mounting portion in the second direction.
2. The absorbent article according to claim 1, wherein the absorbent body is joined to the body mounting portion at at least three locations that are separated by a predetermined distance in the first direction.
A body mounting portion that has a sheet shape that expands and contracts along the longitudinal direction and that can be expanded and stretched around the body and is mounted on the body, and the body mounting portion is mounted on the body An absorbent article that covers the crotch portion in a state, and an absorbent article manufacturing method comprising:
Bonding one end in the longitudinal direction of the absorber to a position excluding both ends in the longitudinal direction of the body mounting portion;
Providing an engaging portion that engages with the other end portion in the longitudinal direction of the absorber at both ends in the longitudinal direction of the body mounting portion;
The manufacturing method of the absorbent article containing this.
The method for manufacturing an absorbent article according to claim 11, wherein, in the joining step, one end portion in the longitudinal direction of the absorbent body is joined in a state where the body mounting portion is elongated in the longitudinal direction.
The absorbent article according to claim 12, wherein in the joining step, one end portion in the longitudinal direction of the absorbent body and the trunk portion mounting portion are joined at at least three positions spaced apart by a predetermined distance in the first direction. Production method.
The absorbent article according to claim 12, comprising a step of covering one end portion of the absorbent body in the longitudinal direction with a piece of fabric in a state where the trunk portion mounting portion is elongated in the longitudinal direction after the joining step. Production method.