TW201906592A - Base fabric for disposable textile product and disposable textile product using same - Google Patents

Abstract

The present invention provides a base fabric for a disposable textile product that excels in moisture transpiration ability, heat dissipation ability, and moisture permeability. The invention also provides a disposable textile product that uses the base fabric for the disposable textile product, which excels in feeling in wearing and contact with skin and also excels in moisture transpiration ability, heat dissipation ability, and moisture permeability. The base fabric for the disposable textile product is configured of a laminated sheet 30 which has first and second fibrous sheets 2, 3 having air permeability and a fiber material 4 interposed between the first and second fibrous sheets 2, 3 and having liquid diffusibility, and in which the first and second fibrous sheets 2, 3 and the fiber material 4 are laminated together with elastic members 5. The laminated sheet 30 forms a composite layer 31 in which fiber layers having air permeability and a fiber layer having liquid diffusibility are laminated. The laminated sheet 30 has a shirring portion 6 in which an uneven surface is formed by the composite layer 31. Elasticity is imparted to the laminated sheet 30.

Description

Materials for disposable fiber products and disposable fiber products using the same

The present invention relates to a material for disposable fiber products used in the manufacture of disposable fiber products such as disposable underwear or diapers, and the present invention relates to a disposable fiber product manufactured using the material.

It is known that in addition to diapers and sanitary products, the materials used in disposable fiber products are also widely used as underwear for travel, disaster prevention, outdoor use, simple or temporary use in hospitals, facilities, hotels, etc. , Clothes, bedding, etc. This material is required to have a good wearing feeling when the material product is worn on the body. For example, in the case of diapers, sanitary products, or underwear, it has a good fit to the body, good touch when in contact with the skin, good breathability, sweat-absorbing and dry-skin moisture evapotranspiration (hereinafter referred to as moisture evapotranspiration) ) Good etc. is more important as the required properties of the material.

In the case of a diaper, which is one of the disposable fiber products, the raw material used is almost always a non-woven material according to its function. For example, Patent Document 1 discloses a disposable diaper having a structure in which an absorbent body such as cotton pulp is interposed between a liquid-permeable top sheet made of a non-woven fabric or the like and a liquid-impermeable property made of polyethylene or the like In the diaper formed between the bottom sheets, an inner pad is mounted on the diaper body, and the inner pad is similarly configured such that absorbent bodies such as cotton pulp are interposed between a liquid-permeable top sheet composed of a non-woven fabric and the like. Made of polyethylene and other liquid-impermeable bottom sheet.

In addition, it has been previously proposed that skin care functions are provided when disposable pajamas are provided to hotel guests and the like. For example, Patent Document 2 discloses a disposable pajamas formed by impregnating or applying a lipophilic humectant to a non-woven material as a skin care function.

Patent Document 1 Japanese Patent No. 3667267 Patent Document 2 Japanese Patent Laid-Open No. 2009-97104

In Patent Document 1, the non-woven fabric used as a raw material of the liquid-permeable top sheet has a problem of low moisture transpiration although it is breathable. In addition, the diaper shown in Patent Document 1 uses a liquid-impermeable bottom sheet in order to prevent excreta such as urine from leaking to the outside. However, the liquid-impermeable bottom sheet is also one having originally low moisture transpiration performance. Moreover, it is also known that the back sheet has moisture permeability in general in a diaper, but it does not contribute to the improvement of moisture transpiration performance. In this way, the conventional materials used for paper diapers do not have sufficient moisture transpiration performance, and water vapor such as sweat will stay inside the diaper, which can not avoid feeling unpleasant such as moist feeling or sticky feeling.

Furthermore, the conventional materials used for paper diapers have the following disadvantages: the heat generated by the body itself is not good in diffusing heat to the outside, and heat is retained in the diaper to cause discomfort. In addition, this material is used for those who have an unpleasant touch to the skin that is unique to fiber materials when wearing a diaper, a cold or dry feeling that is not as comfortable as a cotton material, and lacks the refreshment when wearing. There is room for improvement in the constituent materials of disposable fiber products.

The disposable pajamas in Patent Document 2 have the following disadvantages: the material itself does not have a skin care function, but the skin care function is imparted to the target by post-processing such as impregnation or coating with a lipophilic moisturizer, which is laborious and expensive.

Generally speaking, as a raw material for a disposable fiber product such as direct contact with human skin, the softness of the material itself and the overall softness of the material are required. In addition, as materials for travel, disaster prevention, and outdoor clothing, various designs that can efficiently and effectively express high aesthetics are also required from the standpoint of appearance and recognition, and also have Informational, promotional or advertising media. Furthermore, it is expected that various functions can be provided depending on the application.

An object of the present invention is to provide a material for a disposable fiber product which is excellent in moisture transpiration, heat dissipation, and moisture permeability. In addition, the present invention uses the material of the present invention as a material for a disposable fiber product, and the object is to provide a disposable fiber product that is excellent in wearability or skin contact of the product and has excellent water transpiration, heat dissipation, and moisture permeability.

Moreover, the object of the present invention is to provide a disposable type that can efficiently and effectively express diverse designs or messages and utilize the texture of the raw materials of the materials, and the overall softness or softness of the materials and excellent comfort during use. Materials for textile products. Furthermore, an object of the present invention is to provide a material for disposable fiber products that can efficiently and effectively provide various functions depending on the application and that is easy to manufacture, and to provide a disposable fiber product that exhibits the characteristics of the material.

The material for a disposable fiber product of the present invention is composed of a laminated sheet including first and second fibrous sheets having air permeability, and a sheet interposed between the first and second fibrous sheets. The liquid diffusible fiber material is formed by laminating the first and second fibrous sheets and the fiber material; the laminated sheet forms a composite layer, and the composite layer is a fiber structure layer having air permeability and a liquid diffusion layer. The laminated fibrous structure has a layered structure; the laminated sheet has a pleated portion having an uneven surface formed by the composite layer; and the material for the disposable fiber product has a structure in which elasticity is provided to the laminated sheet.

As a means for imparting elasticity to the laminated sheet, an elastic member is provided between the fibrous material and the second fibrous sheet.

The first fibrous sheet and the fibrous material are preferably intermittently joined via an elastic member, and the second fibrous sheet and the fibrous material are preferably intermittently joined.

It is preferable that the said 1st fibrous sheet and the said fibrous material are joined with a hot-melt adhesive through an elastic member. The second fibrous sheet and the fibrous material are preferably joined by a hot-melt adhesive.

The elastic member is composed of a plurality of linear elastic bodies having elasticity, and the plurality of linear elastic bodies are disposed at intervals in the width direction of the laminated sheet, and are sandwiched between the first fibrous sheet and the fibrous material. Join.

The linear elastic body may be provided in all areas inside the laminated sheet, or may be provided in a part of areas.

As for the material of the present invention, a plurality of pleated portions are formed in the laminated sheet, and the pleated portions are formed in a pattern, and the pleated portions are along the length direction of the linear elastic body in a non-stretched state. Extend in an orthogonal direction.

The fiber material preferably has a soft structure formed by a mechanical softening treatment. The fiber material is preferably subjected to a weakening treatment.

The first fibrous sheet and the second fibrous sheet are preferably composed of a raw material having air permeability and moisture permeability, and a nonwoven fabric is preferably used as the raw material.

The fiber material is preferably composed of a raw material having liquid diffusibility and liquid permeability, and as such a raw material, a paper material is preferably used.

The disposable fiber product of the present invention is constituted by using the materials for the disposable product described above.

The disposable fiber product of the present invention may be constituted as underwear, diapers, fitness clothing, swimwear, tube top, home wear, raincoat, or girdle. [Effect of the invention]

The material of the present invention has excellent moisture transpiration, heat dissipation and moisture permeability. When the material of the present invention is used as a material for disposable fiber products, it can impart a good wearing feeling to the product.

In addition, since the material of the present invention has elasticity, it is excellent in softness and skin-to-body contact, and has the effect that the size of the product can be freed by the elasticity.

The disposable fiber product of the present invention is constructed using the aforementioned materials, has a refreshing wearing feeling and a soft skin contact feeling, and has excellent moisture transpiration, heat dissipation and moisture permeability.

Hereinafter, embodiments of the present invention will be described based on the drawings. FIG. 1 shows an embodiment of the surface state of the material 1 showing the embodiment of the present invention. In FIG. 1, the material 1 is a continuation in the first direction, that is, the x direction. Reference numeral 5 denotes an elastic member provided inside the material, and FIG. 1 shows a state that "a plurality of uneven surfaces are formed by a plurality of elastic members 5." As shown in FIG. 2, a plurality of pleated portions 6 are formed by the plurality of uneven surfaces.

As shown in FIG. 4 and FIG. 5, the material 1 is composed of a laminated sheet 30 that includes a first fibrous sheet 2 having air permeability, a second fibrous sheet 3 also having air permeability, and a medium The liquid diffusible fibrous material 4 is stored between the first and second fibrous sheets 2 and 3, and the laminated sheet 30 is formed by laminating the first and second fibrous sheets 2, 3 and the fibrous material 4. Become. The first and second fibrous sheets 2 and 3 constitute a fiber layer having air permeability, and the fibrous material 4 constitutes a fiber layer having liquid diffusion property. In this way, the laminated sheet 30 forms a composite layer 31 "a layer of air permeable fiber (breathable fiber layer) and a layer of liquid diffusive fiber (liquid diffusive fiber layer) are laminated", and the composite layer 31 consists of the first The air permeable fiber layer, the liquid diffusible fiber layer adjacent to the first air permeable fiber layer, and the second air permeable fiber layer adjacent to the liquid diffusible fiber layer are composed of three layers.

The first fibrous sheet 2 and the fibrous material 4 are intermittently bonded with the elastic member 5 interposed therebetween. Preferably, the bonding of the second fibrous sheet 3 and the fiber material 4 is also intermittent. As the above-mentioned bonding means, bonding, heat welding, ultrasonic bonding, or the like can be used. In terms of ease of work, bonding is preferred. Hereinafter, embodiments of the present invention will be described in a case where a connection book is used as a joining means.

In the bonding as a bonding means, a hot-melt adhesive is preferably used as an adhesive. Hereinafter, embodiments of the present invention in which a hot-melt adhesive is used as an adhesive will be described. Regarding intermittent bonding of the second fibrous sheet 3 and the fibrous material 4 using a hot-melt adhesive, as shown in FIG. 14, the fibrous material 4 is intermittently coated with the hot-melt adhesive (or the second fibrous material may be intermittently applied). The sheet 3 is coated with a hot-melt adhesive, and the two are laminated and joined together. At this time, a non-adhesive portion 8 in which the adhesive layer 7 does not exist is formed between the second fibrous sheet 3 and the fiber material 4, and a space 9 is formed by the non-adhesive portion 8. Moreover, since the elastic member 5 is interposed between the first fibrous sheet 2 and the fibrous material 4, the first fibrous sheet 2 is joined by joining the first fibrous sheet 2 and the fibrous material 4 at the position of the elastic member 5. Discontinuous bonding between 2 and fiber material 4. That is, as shown in FIG. 14, the hot-melt adhesive is blown on the peripheral surface of a plurality of elastic members 5 arranged in parallel at a specific interval, and the elastic member 5 coated with the hot-melt adhesive is positioned at " Between the "face of the fibrous material 4 in the laminated sheet of the second fibrous sheet 3 and the fibrous material 4" and the "first fibrous sheet 2", the surface of the fibrous material 4 in the laminated sheet and the first fibrous sheet The elastic member 5 is sandwiched between 2 and laminated, thereby joining together. The non-adhesive portion 8 where the elastic member 5 faces the first fibrous sheet 2 and the fiber material 4 does not exist, and a space 9 is formed by the non-adhesive portion 8, but it is not particularly illustrated in FIG. 14. FIG. 15 shows a state in which the space 9 formed by the non-adhesion portion 8 is formed in the pleated portion 6. In this way, by forming the structure 9 with the space 9 formed by the non-adhesive portion 8, the functions of the water vapor transmissibility, heat dissipation, and moisture permeability of the material 1 are improved.

As shown in FIG. 4, in the laminated sheet 30, an uneven surface is formed by the composite layer 31, and a pleated portion 6 is formed from the uneven surface. As shown in FIG. 2, FIG. 3, and FIG. 4, the pleated portion 6 is formed by the convex portion 6 a and the concave portion 6 b of the uneven surface, and the convex portion 6 a and the concave portion 6 b are continuously formed, thereby forming a plurality of pleated portions 6.

As a means for forming the pleated portion 6 composed of the convex portion 6a and the concave portion 6b, the elastic member 5 is arranged inside the material 1 as described above. As the elastic member 5, a linear elastic body 5a having elasticity is used, and as the linear elastic body 5a, a filament rubber can be preferably used. Hereinafter, an embodiment in which a linear elastic body 5a is used as the elastic member 5 will be described.

As shown in FIG. 1 and FIG. 2, regarding the linear elastic body 5 a, the line extending direction is arranged in the same direction as the longitudinal direction of the laminated sheet 30 (the x direction in FIG. 1 and FIG. 2), and is a plurality of The linear elastic body 5a is arrange | positioned in parallel at predetermined intervals. That is, a plurality of linear elastic bodies 5 a are arranged at intervals in the width direction (y direction in FIGS. 1 and 2) of the laminated sheet 30, and a plurality of lines of linear elastic bodies are formed.

As shown in FIG. 5, the linear elastic body 5 a is provided between the first fibrous sheet 2 and the fiber material 4. In the present invention, the number of the linear elastic bodies 5a per unit area can be arbitrarily set. Therefore, the interval between the linear elastic bodies 5a in the linear elastic row can also be arbitrarily set. Here, the one fold part 6 extending from one end to the other end along the y direction (a second direction different from the first direction) in FIG. 1 and FIG. 2 is referred to as a “row fold part”. The pleated portions 6 are formed in a plurality of rows at predetermined intervals in the x direction in FIGS. 1 and 2. Here, the joining part of the composite layer 31 in the pleated part 6 and the linear elastic body 5a is called a pleated part support point. As described above, the number of the linear elastic bodies 5a per unit area can be arbitrarily set, but if the number of the linear elastic bodies 5a is increased, the interval between the linear elastic bodies 5a is reduced, thereby folds in a row. Since the number of supporting points of the pleated portion in the portion increases, the convex portions 6a and the concave portions 6b in one row of the pleated portions 6 can be formed into a uniform shape and the shape can be maintained. Thereby, the pleated portion 6 is not deformed, and it is preferable from the viewpoint of increasing the flexibility, moisture transpiration, heat dissipation, and moisture permeability of the material 1. For such a purpose, the interval between the pleats 6, that is, the interval between the convex portions 6 a, is preferably 2 mm to 7 mm. The distance between the convex portions 6a is more preferably 3.00 mm to 6.25 mm. By narrowing the interval between the convex portions 6a, fine texture folds can be formed, so the appearance will be beautiful, and because the contact area between each fold and the skin becomes smaller, the skin feel will be better, Furthermore, since the surface area is increased, the absorbency of sweat and the like is improved. On the other hand, by widening the interval between the convex portions 6a, the elastic force of the filamentary rubber can be moderately suppressed, and the manufacturing cost can be reduced.

Here, an example of a manufacturing method for manufacturing the material 1 of the present invention using a filament rubber as the linear elastic body 5a and a hot-melt adhesive as an adhesive will be described. As described below, it is preferable to use a paper material as the fibrous material 4, and it is preferable to use a non-woven fabric as the first fibrous sheet 2 and the second fibrous sheet 3, respectively. A case where a non-woven fabric is used as the first fibrous sheet 2 and the second fibrous sheet 3 will be described as an example to describe a method for manufacturing the material 1 of the present invention. Here, the nonwoven fabric used as the first fibrous sheet 2 is referred to as a first nonwoven fabric sheet, and the nonwoven fabric used as the second fibrous sheet 3 is referred to as a second nonwoven fabric sheet.

First, a paper material as the fibrous material 4 is taken out from a roll wound body. A printed layer 4 a is formed on this paper material in advance (see FIGS. 4 and 14). The rolled paper material is passed through an embossing roller and pressed between the rollers, thereby performing mechanical softening treatment. The mechanical softening treatment may be an embossing treatment using a flat roll, or an embossing treatment using an intermeshing roll having a plurality of protrusions on the roll surface. In the latter embossing process, a plurality of fine holes are opened in the paper material. The hot melt adhesive was intermittently blown onto the paper material after the embossing treatment. Furthermore, machining other than embossing may be used. On the other hand, the second nonwoven fabric sheet as the second fibrous sheet 3 is rolled out from the roll wound body, and the second nonwoven fabric sheet and the paper material coated with the hot-melt adhesive are pressed against each other through a flat roll, The two are laminated to produce a bonded body sheet. In this bonded body sheet, the second nonwoven fabric sheet and the paper material are intermittently bonded.

A plurality of filaments are wound from a roll wound body in which a plurality of filaments are wound in parallel. The filament rubber is rolled out under a specific tensile force. A hot-melt adhesive was blown onto the rolled rubber. In this case, the adhesive is continuously blown over the entire length of the filament rubber. The adhesive is applied to the entire peripheral surface of the filamentous rubber. On the other hand, the first nonwoven fabric sheet serving as the first fibrous sheet 2 is rolled out from the roll wound body, and the first nonwoven fabric sheet is fed out so as to face the joint body sheet, and sandwiched as described above. In the form of the filament rubber coated with the adhesive, the filament rubber is supplied between the bonded body sheet and the first nonwoven fabric sheet. In this case, the filiform rubber is supplied between the surface of the paper material of the bonded body sheet and the first nonwoven fabric sheet.

The filament rubber was passed through a flat roller in a state sandwiched between the surface of the paper material of the bonded body sheet and the first nonwoven fabric sheet. The bonded body sheet, the filament rubber, and the first non-woven fabric sheet are pressure-bonded by a flat roll and laminated to form a whole. The first non-woven fabric sheet and the paper material are joined intermittently due to the intervening filament rubber. In this way, a laminated sheet 30 is produced in which the second nonwoven fabric sheet and the paper material are intermittently joined and the first nonwoven fabric sheet and the paper material are intermittently joined. If necessary, the laminated sheet 30 is passed through an embossing roller and mechanically softened. By performing this treatment, the softness of the material 1 can be further improved.

Since the manufactured laminated sheet 30 has a long size, cutting is performed to make the length dimension of the laminated sheet 30 in the longitudinal direction (the x direction in FIGS. 1 and 2) be a specific length. In this cutting, the first nonwoven fabric sheet, the second nonwoven fabric sheet, the paper material, and the filament rubber are cut. By cutting the filiform rubber, the filiform rubber in the stretched state is released from the tensile force and contracted by the restoring force. Due to the shrinkage stress at this time, the composite layer 31 composed of the first nonwoven fabric sheet, the second nonwoven fabric sheet, and the paper material is stressed in a direction in which the length is shortened. Therefore, an uneven surface is formed on the composite layer 31, thereby forming a fold Crotch 6. In this way, a material 1 having a plurality of pleated portions 6 can be manufactured.

If the structure of the material 1 of the present invention is described here, the linear elastic body 5a is in a state that is shortened by the restoring force, that is, a non-stretched state, and a plurality of "linear shapes that are in the non-stretched state are formed" The length direction of the elastic body 5a (the same direction as the length direction of the laminated sheet 30 in FIG. 1 and FIG. 2, that is, the x direction) A direction orthogonal to the width direction of the laminated sheet 30 in FIG. 1 and FIG. 2 (the y direction) The folds 6 extending in the same direction) form a pattern of folds in the laminated sheet 30.

The linear elastic body 5a may be provided in the entire area inside the laminated sheet 30, or may be provided in a part of the area. When the linear elastic body 5a is provided in the entire area inside the laminated sheet 30, since the material 1 is provided with uniform elasticity, the case where the material 1 is used as a cover sheet for disposable shorts or diapers has the following: Advantages: it will stay on the body without risk of falling off.

The linear elastic body 5a arranged inside the laminated sheet 30 imparts elasticity to the laminated sheet 30. Therefore, if the material 1 composed of the laminated sheet 30 is stretched by hand in the x direction in FIG. 1 and FIG. 2, the linear elastic body 5 a is extended, so the material 1 is also extended. If you let go from this state, then The linear elastic body 5a contracts due to its restoring force, whereby the material 1 is also restored to its original size. In this way, since the material 1 has elasticity, when the material 1 is used as a material for disposable fiber products such as underwear and diapers, it will become an excellent fit to the body and can be freely sized.

Furthermore, the material 1 may be formed by laminating two or more laminated sheets 30, and may also be constituted by laminating one or two or more laminated sheets 30 and one or two other laminated sheets.

The material 1 of the present invention can be preferably used as a raw material for disposable fiber products, and is advantageous as a raw material having unprecedented excellent properties. For the disposable fiber products to which the material 1 of the present invention is applied, it is not limited to those who use it once and discard it. Depending on the purpose and purpose of use, it also includes repeated users within a short period of time. The next cleaner.

It is preferable that the first and second fibrous sheets 2 and 3 are made of a material having air permeability and moisture permeability. As such a fiber material having air permeability and moisture permeability, it is preferable to be as described above. Use non-woven fabric.

In the present invention, as the non-woven fabric, a well-known non-woven fabric that has been generally used conventionally can be used. That is, a known non-woven fabric "having a fibrous structure having unidirectional or random alignment of fibers and intertwining, fusing, or bonding between fibers" can be used. Examples of non-woven fiber raw materials include natural fibers such as plant fibers (cellulosic polymers) and animal fibers (protein polymers); refined fibers such as soluble cellulose (Lyocell) and tencel (tencel); 嫘 萦, slime Recycled fibers such as 嫘 萦; semi-synthetic fibers such as acetate; synthetic fibers such as nylon and acrylic fibers; chemical fibers such as PP (polypropylene), PE (polyethylene), and PET (polyethylene terephthalate); One of these may be used alone, or two or more of these may be used in combination. Also, other materials may be included as needed.

The nonwoven fabrics used as the first fibrous sheet 2 and the second fibrous sheet 3 can be appropriately selected according to the type or application of the product of the application material 1. For example, when the material 1 is applied to clothes that are disposable fiber products, and when the first fibrous sheet 2 or the second fibrous sheet 3 is in contact with the user's body when worn, The first fibrous sheet 2 or the second fibrous sheet 3 is preferably a non-woven fabric made of a material that can exhibit functions such as softness, skin feel, and sweat absorption. On the other hand, when the first fibrous sheet 2 or the second fibrous sheet 3 is used without being in contact with the body of the user, the fibrous sheet 3 is preferably used to perform functions different from those described above. Non-woven fabrics such as waterproofness are used as the first fibrous sheet 2 or the second fibrous sheet 3.

Examples of the raw materials of the non-woven fabric used for the first fibrous sheet 2 and the second fibrous sheet 3 include a spun-bonded nonwoven fabric, a heat-bonded nonwoven fabric, a spun lace nonwoven fabric, a dry-laid nonwoven fabric, a wet-laid nonwoven fabric, and a melt Melt blown nonwovens, chemically bonded nonwovens, needle-punched nonwovens, stitch bonding nonwovens, steam-jet nonwovens, and the like are preferred. Among them, spin-bonded nonwovens, heat-bonded nonwovens, and water-jet nonwovens are preferred.

The nonwoven fabric used for the first fibrous sheet 2 and the second fibrous sheet 3 preferably has a weight per unit area of 5 to 60 g / m ² , more preferably 7 to 40 g / m ² . The reason why the basis weight of the non-woven fabric is preferably set in the above range is that if the basis weight is less than 5 g / m ² , for example, when the hot-melt adhesive is applied, the hot-melt adhesive leaks out to the surface of the non-woven fabric. If the weight per unit area exceeds 60 g / m ² , the thickness of the product becomes thick, the manufacturing efficiency is poor, and the packaging operation becomes complicated. When the basis weight of the non-woven fabric is set to 7 to 40 g / m ² , a combination of a bonding method by a hot-melt adhesive and a bonding method by heat sealing or ultrasonic bonding can be used to increase the bonding strength.

As the material of the first fibrous sheet 2 and the second fibrous sheet 3, any material other than a non-woven fabric may be used as long as it is made of a material having air permeability and moisture permeability. For example, a breathable sheet or a moisture-permeable sheet made of synthetic resin may be used.

When the material 1 of the present invention is used as a raw material of disposable clothes, as shown in FIG. 13a, the second fibrous sheet 3 is rarely arranged on the side in contact with the skin 200 of the user, but the material 1 is used as a discard In the case of a raw material of a bedding (such as a sheet), the second fibrous sheet 3 is often arranged on the side that comes into contact with the skin 200 of the user. As described above, when the second fibrous sheet 3 is in direct contact with the human body, it is preferable to use a non-woven fabric having functions such as softness, skin touch, and sweat absorption as the material of the second fibrous sheet 3.

The fiber material 4 is preferably composed of a raw material having liquid diffusibility and liquid permeability. As such a raw material having liquid diffusibility and liquid permeability, a paper material is preferably used as described above.

In the present invention, as long as the fiber material 4 is a raw material having liquid diffusivity and liquid permeability, materials other than paper materials can be used. As such a material, for example, natural fibers such as kenaf, bamboo fiber, hemp stem, cotton, silk, and sugar cane can be used. Since the use of a paper material as the fiber material 4 is a preferred embodiment of the present invention, a case where the paper material is used as the fiber material 4 is described below as an example.

As the above-mentioned paper material, a paper material made of pulp paper or a material whose main material is pulp can be used. That is, it is possible to use a paper material produced using paper pulp as a raw material and subjected to a paper production process such as a paper making process.

As the raw material pulp, wood pulp, synthetic pulp, waste paper pulp, and the like can be used. In addition, it is not limited to natural fibers such as pulp, and regenerated fibers such as krypton may also be used. Furthermore, the present invention can also use a toilet paper material as a raw material pulp. In this case, for example, a raw material pulp composed of conifer bleached kraft pulp obtained from conifers such as red pine, fish scale spruce, sassafras fir, cedar fir, hemlock fir, and spruce can be used. Further, a blend of broadleaf bleached kraft pulp obtained from the coniferous tree bleached kraft pulp and broadleaf trees obtained from broadleaf trees such as beech, oak, birch, eucalyptus, oak, poplar, and alder may be used. From the viewpoint of manufacturing cost or ease of manufacturing, it is preferable to use the above-mentioned coniferous bleached kraft pulp alone as a raw material pulp.

In the case where the paper material is formed of a material mainly composed of pulp, it is preferred that the blend of pulp is 30% or more, more preferably 50% or more, and most preferably 80% or more. By setting the blending ratio of the pulp to the above-mentioned ratio, the softness of the whole material 1 can be improved, or the production efficiency at the time of manufacturing can be improved. In addition, by increasing the blending ratio of pulp, the waste can be easily decomposed, for example, in soil or the like after being discarded. Therefore, it is possible to further reduce the environmental load and further improve environmental considerations. Further, as the paper material, a paper sheet having good hydrolyzability is preferably used. In addition, the paper material constituting the fiber material 4 is preferably a single-layer structure composed of one sheet of paper, but may be a multi-layer structure composed of a plurality of sheets of paper stacked. In the case of a multi-layer structure, the raw materials or thickness of each layer of paper may be the same or different. The paper material constituting the fibrous material 4 may be obtained by blending the aforementioned pulp with a nonwoven fabric. For example, a paper material obtained by blending the above-mentioned pulp with a water-jet nonwoven fabric or a mixture of the above pulp with an air-laid nonwoven fabric may also be used.

The basis weight of the paper material constituting the fiber material 4 is preferably 7 to 50 g / m ² . If the weight per unit area is less than 7 g / m ² , it is difficult to make the wearing feeling good when wearing the disposable fiber product composed of the material 1 of the present invention, and it is difficult to impart sufficient moisture evaporation performance and heat dissipation performance to the product, and The strength of the material 1 also becomes insufficient. If the weight per unit area exceeds 50 g / m ² , the thickness of the material becomes thick, the wearing feeling is also deteriorated, and the moisture evapotranspiration performance and heat dissipation performance are also reduced. In addition, since the thickness of the product is also increased, it becomes difficult to pack the product during packaging. A more preferable paper material has a basis weight of 10 to 30 g / m ² .

As the paper material constituting the fiber material 4, colored paper can also be used. By constituting in this manner, the material 1 with high aesthetics can be provided.

Preferably, the paper material constituting the fiber material 4 is given a soft structure by a mechanical softening treatment. As the mechanical softening treatment, an embossing treatment is used. As the embossing roller used for the embossing treatment, a pair of embossing rollers formed by forming a plurality of protrusions on a roller surface can be used. If the embossing roller is used for the embossing treatment, a plurality of fine holes are opened in the paper material, and at the same time, the tissue of the paper is weakened, thereby imparting flexibility to the paper material. The hole may be a circular hole, a linear hole, or a slit-shaped hole. By providing a rough surface formed of a plurality of irregularities without making holes in the paper material, the paper material can be similarly provided with flexibility.

The embossing roller used for the embossing process is not limited to a roller having protrusions, and a pair of flat rollers without protrusions and having a smooth roller surface can also be used. By passing the paper material between the flat rollers and pressing between the rollers, the paper tissue is weakened. That is, even if the perforation process is not performed, the paper structure is weakened by the pressing force between the rollers. The embossing treatment for imparting a soft structure to the paper material may be performed by combining the embossing treatment by an embossing roller having protrusions on the roll surface and the embossing treatment by a flat roller.

As described above, by providing a soft structure to the paper material, there is an effect that the material 1 as a whole is also rich in softness, so that the wearing feeling when wearing a disposable fiber product composed of the material 1 is good. In other words, it does not cause the user to feel the discomfort caused by using the paper material as the material of the above-mentioned products, and gives the user the satisfaction that is brought about by the soft wearing feeling.

By providing a soft structure to the paper material, the following effects are produced. That is, if the paper material used as the fibrous material 4 has a soft structure, the laminated sheet 30 becomes a soft structure as a whole, so it is easily deformed. Therefore, when the pleated portion 6 is formed by the shrinkage stress of the linear elastic body 5a, the laminated sheet 30 can be easily The ground is deformed to form a pleated portion 6 having a uniform shape of the convex portion 6a and the concave portion 6b. By forming the pleated portions 6 having a uniform shape of the convex portion 6a and the concave portion 6b, the softness of the material 1 as a whole is also increased. In the disposable fiber product composed of the material 1, it is possible to give the user more softness. Dressing. In addition, by providing flexibility to the paper material, a soft feeling can be imparted to the entire material 1.

In addition, as described later, the fragile treatment of the paper structure by embossing has the effect of providing the material 1 with more excellent water transpiration, heat dissipation, and moisture permeability.

As described above, it is preferable to use a hot-melt adhesive for bonding the second fibrous sheet 3 and the fibrous material 4. Examples of the hot-melt adhesive include EVA (ethylene-vinyl acetate copolymer), PO (polyolefin), PA (polyamine), SR (polysiloxane), and ACR (acrylic). Adhesives such as polyurethane, PUR (polyurethane-moisture curing type), etc., may be used in one kind, or two or more kinds may be used in combination. As the adhesive used for joining the second fibrous sheet 3 and the fibrous material 4, in addition to the hot-melt adhesive, an organic solvent-based adhesive, a water-soluble adhesive, and the like can be used.

Regarding the form in which the second fibrous sheet 3 and the fibrous material 4 are joined, the adhesive may be applied to the front surface of the two contact surfaces, but it is preferable to perform the application intermittently as described above. Compared with coating on the entire surface, intermittent application makes the material 1 soft, and also makes the material 1 good in water evaporation, heat dissipation and moisture permeability. Examples of the intermittent coating method of the adhesive include a method of applying a linear, dot, stripe, spiral, block, or pattern. One of these methods may be used, or Use multiple methods in combination.

The non-adhesive portion 8 is formed between the second fibrous sheet 3 and the fibrous material 4 by intermittent application of the adhesive. The area ratio of the non-adhesive portion 8 is better than the area of the second fibrous sheet 3. It is 5 to 85%, more preferably 10 to 80%, and still more preferably 30 to 75%. If the area ratio of the non-adhesive portion 8 is within the above range, the material 1 is excellent in softness, moisture transpiration, heat dissipation, and moisture permeability, and the material 1 is also excellent in softness. In this case, it is considered that the application amount of the adhesive may be an amount necessary to obtain a specific bonding strength, and the application amount is preferably as small as possible.

As described above, regarding the linear elastic body 5a, the line extending direction is arranged in the same direction as the longitudinal direction of the laminated sheet 30 (the x direction in FIGS. 1 and 2), and in the width direction of the laminated sheet 30 (in In FIG. 1 and FIG. 2, a plurality of linear elastic bodies are arranged at intervals in a plurality of rows. When a plurality of linear elastic bodies 5 a are arranged on the laminated sheet 30, the linear elastic bodies 5 a are not limited to being arranged in parallel. The arrangement of the linear elastic body 5a is shown in FIGS. 6a to 6j.

As the configuration of the linear elastic body 5a, the linear elastic bodies 5a may be arranged in parallel as shown in FIG. 6a, or may be arranged in parallel linear lines as shown in FIGS. 6b and 6c. All or a part of the elastic body 5a is provided with a disconnection part, and the curved curved linear body 5a may be arranged side by side as shown in Figs. 6d, 6f and 6g, or as shown in Fig. 6e and Fig. The curved linear elastic bodies 5a shown in 6j are arranged in an irregularly arranged state. In addition, as shown in FIGS. 6h and 6i, the linear elastic bodies 5a may be arranged in a mesh pattern. In the arrangement of the plurality of linear elastic bodies 5a, each linear elastic body 5a preferably has the same expansion ratio, but may also be a combination of linear elastic bodies 5a having different expansion ratios. Although not shown in the drawings, the elastic member 5 is not limited to those having a linear shape, and a sheet-like elastic body provided with a plurality of holes or cutouts and having a specific air permeability may be used. As such a sheet-like elastomer, a rubber material such as a rubber having a base of amine ester, silicon, or the like, or a natural rubber can be used as a raw material. In the present invention, it is preferable to use a linear elastic body 5 a having a linear shape as the elastic member 5.

Regarding a state in which the linear elastic body 5a is bonded between the first fibrous sheet 2 and the fiber material 4, the linear elastic body 5a can be bonded to the first fiber by an adhesive applied to the linear elastic body 5a. The fibrous sheet 2 and the fibrous material 4 may be bonded to the first fibrous sheet 2 and the fibrous material by an adhesive applied to the first fibrous sheet 2 and the fibrous material 4. Between 4. As the said adhesive agent, the same thing as the adhesive agent used when the said 2nd fibrous sheet 3 and the fiber material 4 are joined can be used. As the adhesive, a hot-melt adhesive is preferably used.

The hot-melt adhesive is blown and applied to the peripheral surface of each linear elastic body 5a, and the applied hot-melt adhesive functions to sandwich the linear elastic body 5a between the first fibrous sheet 2 and the fibers. Since these three are joined in the state between the materials 4, it is not necessary to apply a hot-melt adhesive to each of the first fibrous sheet 2 and the fibrous material 4. Further, the adhesive may not be applied to the linear elastic body 5a, and the contact surface of each of the first fibrous sheet 2 and the fiber material 4 and the linear elastic body 5a may be applied.

As described above, the hot-melt adhesive applied by blowing onto the peripheral surfaces of each linear elastic body 5a is sandwiched between the first fibrous sheet 2 and the fibrous material 4 with the linear elastic body 5a sandwiched therebetween. These three are joined, but in this joined state, a part of the hot-melt adhesive is immersed in the layer of the fibrous material 4, and as shown in FIG. 16, an adhesive penetrating portion Z is formed. Since the hot-melt adhesive of the adhesive penetrating portion Z and the peripheral surface of the linear elastic body 5a has been integrated, the adhesive penetrating portion Z performs an anchoring effect when the linear elastic body 5a is bonded to the fiber material 4, so that The bonding between the linear elastic body 5a of the hot-melt adhesive and the fiber material 4 becomes stronger. In this way, the anchoring structure formed by the adhesive is formed in the fiber material 4. Therefore, even if the amount of the adhesive applied to the linear elastic body 5a is small, a specific bonding strength can be obtained, and the strength of the material 1 as a whole can be improved, so that the material 1 having sufficient fastness can be provided. Note that in FIG. 16, the adhesive applied between the second fibrous sheet 3 and the fibrous material 4 is not shown.

In the conventional materials of disposable fiber products, when the non-woven fabrics are bonded to each other by an adhesive, there is a problem that the adhesive exudates to the surface of the material through the fiber gaps of the non-woven fabric. There is a composite layer 31, and the composite layer 31 contains the fiber material 4, so it has the effect of preventing the adhesive from oozing out to the surface of the material by the penetration of the fiber material 4 by the adhesive.

As described above, in the manufacturing step of the material 1, the continuously manufactured laminated sheet 30 is cut to make it into a product having a specific size and length. Since the product has a long size, cutting is performed to make the length dimension in the longitudinal direction of the laminated sheet 30 (the x direction in FIG. 1 and FIG. 2) be a specific length. At this cutting, the linear elastic body 5a is cut, so the linear elastic body 5a in a stretched state is released from the tensile force, and is contracted by the restoring force. Due to the shrinkage stress at this time, an uneven surface is formed on the composite layer 31. Here, the bonding force between the linear elastic body 5a and the first fibrous sheet 2 and the bonding force between the linear elastic body 5a and the fiber material 4 are relatively small. When it is small, a phenomenon called "rubber falling off" occurs, that is, the linear elastic body 5a and the first fibrous sheet 2 and the fibrous material 4 are separated from each other. The composite layer 31 composed of the first fibrous sheet 2 and the fibrous material 4 joined by the elastic body 5a generates shrinkage stress. Because the "rubber falls off", the composite layer 31 is not stressed in a direction in which the length of the composite layer 31 is shortened, so that a concave-convex surface is not formed on the composite layer 31, and thus the pleated portion 6 may not be formed. Here, as shown in FIG. 16, if an adhesive permeation portion Z made of a hot-melt adhesive is formed in the layer of the fibrous material 4, the bonding force between the fibrous material 4 and the linear elastic body 5 a becomes strong. It is possible to prevent "rubber falling off" when the linear elastic body 5a is cut.

The thickness of the material 1 can be arbitrarily set, and it can also be formed thinly. When the thickness of the material is formed thinly, the disposable fiber product formed by using the material 1 can have good air permeability and water permeability, and a good wearing feeling.

When a paper material is used as the fiber material 4, as shown in FIGS. 4 and 14, a printing layer 4 a is formed in the paper material as necessary. As shown in FIG. 14, the printed layer 4 a is formed in the fiber material 4 on the side facing the second fibrous sheet 3. According to the embodiment of the present invention, since it is possible to print on a paper material instead of printing on a non-woven fabric, it is possible to easily and efficiently print clear patterns, and thereby, it is possible to efficiently and effectively express a variety of designs or messages. In particular, by appropriately selecting a design or pattern printed on a paper material, selecting a non-woven fabric for the second fibrous sheet 3, and a method for forming the adhesive layer 7, it is possible to provide materials with overall design and high aesthetics 1 . As a design or a pattern for printing on a paper material, for example, a design, a color, a pattern, a photograph, etc. (henceforth a "pattern etc.") are mentioned.

The paper material as the fibrous material 4 is printed with a pattern or the like by a method such as inkjet, flexographic printing, or gravure printing. The surface of the printed layer 4a can also be subjected to anti-bleaching treatment by, for example, painting or adding an adhesive. Examples of the binder include known materials such as PVA (polyvinyl alcohol), CMC (carboxymethyl cellulose), EVA (ethylene-vinyl acetate copolymer), acrylic acid, and lacquer. It is also possible to use an ink that has been subjected to anti-bleaching treatment.

The printed layer 4a is preferably formed by flexographic printing. The flexographic printing method has the following advantages: the contact area between the plate and the paper material is small, and the printing pressure is low. Therefore, it is easy to peel the paper material from the plate, and it is particularly suitable for forming the printing layer 4a when the thickness of the paper material is thin. In addition, there are many types of inks that can be used in flexographic printing. In this respect, compared with the inkjet printing method in which ink is ejected through a nozzle or the like, there is no disadvantage of being affected by the viscosity of the ink. When a pattern or the like is displayed on the printing layer 4a, the pattern or the like printed by the printing plate is printed in accordance with the state in which the laminated sheet 30 is stretched in the stretching direction (the x direction in FIG. 2) of the linear elastic body 5a. Designs for stretched designs, etc. When the stretched state of the linear elastic body 5a is released, the original target design (unstretched design) or the like is shown. In the above case, the stretch rate of the printed pattern and the like in the x direction is determined by the stretch rate of the linear elastic body 5a. For example, the original target design (unstretched design) can be printed by stretching the length in the x direction to 1.1 times to 3.5 times.

By embossing the paper material to form a plurality of concave portions or convex portions, a three-dimensional pattern or the like can be displayed on the printed layer 4a, and a design or the like that differs depending on the angle of observation can be displayed. As shown in FIG. 14, the printed layer 4 a is formed in the space 9 and the printed layer 4 a is formed in the position covered by the adhesive layer 7. The combination of the printed layers 4 a makes it possible to express the appearance Design becomes a richer change. If the proportion of space 9 is large, the printed layer 4a shown in the appearance has a sense of haze, and if the proportion of space 9 is small, the printed layer 4a shown in the appearance is clearly recognized. .

Since the printed layer 4a can be viewed from the outside through the second fibrous sheet 3, it is possible to efficiently and effectively express various designs or messages in the material 1. In order to allow the printed layer 4a to be accurately recognized from the outside and to give it aesthetic appearance, it is preferable to use a non-woven fabric as the second fibrous sheet 3.

In the disposable fiber product constructed using the material 1 of the present invention, as shown in FIG. 13a, when sweat 300 is attached to the skin 200, the pleats 6 are wiped by moving the body as shown in FIG. 13b. 300, the sweat 300 thus wiped is absorbed into the fiber material 4 (paper material) in the composite layer 31 (see FIG. 4). Moreover, as shown in FIG. 13C, the unsweated sweat 300 evaporates in the space formed by the pleated portion 6, and is similarly absorbed into the fiber material 4 (paper material). With this, the material 1 does not adhere to the skin 200 due to the sweat 300, and the sweat 300 absorbed into the fiber material 4 (paper material) can be efficiently evaporated to the outside (FIG. 13c). Therefore, the drying of sweat 300 is faster, and there is no sticky feeling caused by sweat 300, and it can be comfortably worn by the wearer.

Various additives can be added to the material 1 according to the properties of the product in the case where the material 1 of the present invention is applied to a disposable fiber product. Examples of the additive include a deodorant, an insect repellent, a fragrance, a water repellent, an antifouling agent, an antibacterial agent, and a softener. One or two or more of these can be added to the material 1. As a state of being added to the material 1, the additive may be added to any one of the first fibrous sheet 2, the second fibrous sheet 3, and the fiber material 4 or may be added to two or more of them. As an addition means, an additive is applied to the surfaces of the first fibrous sheet 2, the second fibrous sheet 3, and the fiber material 4. In the case of adding to the first fibrous sheet 2 and the second fibrous sheet 3, the additives may be kneaded in advance in the fibers constituting these sheets. When it is added to the paper material as the fibrous material 4, an additive may be added to water and paper-making in advance in the papermaking step of papermaking, so that the additive is contained in the paper. When the printing layer 4a is formed on the material 1, an additive may be mixed in the printing ink in advance, and printing may be performed using the printing ink containing the additive.

Specific examples of the above-mentioned deodorant include catechins, epigallocatechins, epigallocatechins, epigallocatechins, catechins, and tannins-like extracts derived from plants. Epicatechin gallate, epigallocatechin gallate, gallotannin, ellagitannin; iron-ascorbic acid chelate compound; Zirconium hydroxide; Lanthanide hydroxide; Zn, Cu, Fe and other metal salts (such as ZnSO ₄ ) and so on. Examples of deodorants with adsorption include activated carbon; zeolites; silicon dioxide; ceramics; Otani stone; charcoal polymers; carbon nanotubes; carbon nanohorn; organic acids such as citric acid and succinic acid; Acids; inorganic acids such as sulfuric acid, boric acid, phosphoric acid; ion exchangers; anions, ammonia, amines, olefins, alkynes, aromatics and other nucleophiles; cations, boron fluoride, aluminum chloride, iron bromide, chloride Electrophilic agents such as zinc and acetone. One of these deodorants may be used, or two or more of them may be used in combination.

Specific examples of the insect repellent include N, N-diethyl-m-toluidine (DEET), dipropylpyridine-2,5-diformate, pyrethrin, and phthalate Dimethyl formate, 2,3,4,5-bis (2-endebutyl) tetrahydrofurfural, citronella, geraniol, lemongrass oil (essential oil), eugenol, p-menthane-3,8 -Diol, ethylbutylacetamidate propionate, 1-piperidinecarboxylic acid 2- (2-hydroxyethyl) ester 1-methylpropyl ester and the like. In addition, natural plant oils, citronella oil, lemongrass oil, cinnamon oil, eucalyptus oil, clove oil, cinnamon oil, lemon eucalyptus oil, cypress leaf oil, lavender oil, sweet orange oil, grapefruit Oil, cedar wood oil, gerbera oil, thyme white oil, peppermint oil, etc. are used as insect repellents. Furthermore, citronellal, citronellol, citral, linalool, dihydro linalool, tetrahydro linalool, dehydrogenarol, pinoresinol, menthol, menthol, p-menthane-3,8 can be used. -Insectants such as diols, pinene, methyl salicylate, pinene, limonene, geraniol, borneol, geranyl formate, etc. One of these insect repellents may be used, or two or more of them may be used in combination.

Specific examples of the aforementioned spices include fruits such as orange, lemon, lime, and peach; flowers such as rose and lavender; essential oils such as mint and white sandalwood (herb). Generally, the aromatic component is oily or water-alcohol soluble. Examples of oily fragrances include phenylethyl alcohol, linalool, jasmonone, hexyl cinnamaldehyde, α-limonene, α-pinene, bromostyrene, citronellal, trichloroacetaldehyde, pinoresinol, and mint Brain, cinnamic acid, etc. One of these spices may be used, or two or more of them may be used in combination.

As the antibacterial agent, a carbendazim derivative or the like having antibacterial properties can be used.

As the antifouling agent and softening agent, cationic surfactants such as alkylated quaternary ammonium salts commonly used as hair conditioners or softeners for clothes can be used. Examples of the cationic surfactant include chlorinated chloride. Dicocoyl dimethyl ammonium, alkyltrimethyl ammonium chloride, etc. Glycerin, propylene glycol, butylene glycol, dipropylene glycol, liquid paraffin, and the like can also be used as the antifouling agent and softening agent. One of these antifouling agents and softeners may be used, or two or more of them may be used in combination.

The material 1 of the present invention is used as a material for disposable fiber products, and is particularly useful when it is used as a constituent material of disposable underwear or disposable diapers such as disposable shorts. In addition to the above, as the disposable fiber product constructed by using the material 1 of the present invention, there may also be mentioned: underwear or T-shirt 100 as shown in FIG. 7, flat mouth 101 as shown in FIG. 8, and FIG. 9. The abdominal belt 102 shown, the rain gear 103 such as the raincoat shown in FIG. 10, the protective belt 104 used on the body's hands, arms, wrists, knees, and ankles as shown in FIGS. 11a to 11e, and Bandages 105 and the like shown in FIG. Also, although not specifically shown, it can also be applied to fitness clothes, sportswear, sweat-absorbent linings, swimwear, and home wear as disposable fiber products. Moreover, when the material 1 of the present invention is applied to a hat that is a disposable fiber product, the fiber material 4 can be worn by containing water. In this case, the head of the user can be obtained by gasification of water. Ministry of cooling effect.

In addition, the material 1 of the present invention can be used as a diaper bag to store used diapers, various physiological products for women, various disposable clothes used in camping and outdoor activities, cooling or warming scarves, towels, hospitals or accommodation facilities, etc. Disposable clothes, bedding, panties, bras, shorts, bathrobes, stockings, headscarves, hair bands, massage clothes, nursing clothing, etc. are provided to patients or guests.

An embodiment of a disposable underwear 10 constituted as a disposable fiber product using the material 1 of the present invention is shown in FIG. 17. The underwear 10 shown in FIG. 17 is a so-called shorts-type diaper worn on the abdomen of the user P, and includes an abdomen wearing portion 12 made of the material 1 of the present invention, covering the entire abdomen of the user P, and including A portion of the lower abdomen is lightly squeezed; and a waist wearing portion 14 is provided on the upper side of the abdominal wearing portion 12 and includes elastic members such as rubber, and is worn around the waist of the user P. An elastic sheet 16 is placed on the inner side of the abdominal wearing part 12 (the side that is in contact with the body), between the front and the back of the abdominal wearing part 12, and is mounted on the inner side of the elastic sheet 16 (the skin abutting side of the user P). Upper excretion absorbent absorbent body 18.

The underwear 10 shown in FIG. 17 has a function as a diaper as described above, and can be used as an diaper for adults or as a diaper for infants. The diaper using the material 1 of the present invention has a softer touch than a conventional diaper, has excellent moisture transpiration, heat dissipation and moisture permeability, and has better cold and warm sensibility. The underwear 10 using the material 1 of the present invention has characteristics similar to ordinary underwear (shorts) when worn, and has characteristics not found in the disposable diapers that are less resistant to use. Therefore, caregivers who are concerned about incontinence, women who have aged after giving birth, or women who have menstrual blood leakage can be used as disposable underwear without any sense of resistance and peace of mind. Furthermore, in the case where a paper material is used as the constituent material of the material 1 of the present invention, that is, the fibrous material 4, the paper material is less charged due to friction, so that the generation of static electricity during use can be prevented.

The function and effect of the material of the present invention configured as described above and the disposable fiber product constructed using the material of the present invention will be described. Since the pleated portion 6 is formed in the laminated sheet 30 in the material 1 of the present invention, it has the following effects: The contact with the skin of the body is soft, and the entire material can exhibit softness.

The laminated sheet 30 includes a first fibrous sheet 2 having air permeability, a second fibrous sheet 3 also having air permeability, and a fibrous material 4 having liquid diffusibility as a laminated constituent material, and a fibrous layer having air permeability. It exists adjacent to the fiber layer having liquid diffusivity. In this way, the laminated sheet 30 is formed with the composite layer 31 "a fiber layer having air permeability and a fiber layer having liquid diffusivity are laminated next to each other". When a disposable fiber product composed of the material 1 of the present invention is worn such that the first fibrous sheet 2 abuts the skin side of the body, sweat generated on the body is passed through the first fibrous sheet 2 When absorbed into the layer of the fibrous material 4, sweat diffuses in the layer of the fibrous material 4. The sweat diffused and widely dispersed in the layer is evaporated to the outside through the second fibrous sheet 3. Therefore, sweat does not locally stay in the part in contact with the material, and sweat is efficiently evaporated.

That is, since the composite layer 31 in the laminated sheet 30 exists adjacent to the liquid diffusive functional layer, the gas permeable functional layer interacts with the liquid diffusive functional layer, and the sweat evapotranspiration efficiency is caused by this interaction. And it has increased dramatically. That is, since the moisture path in the breathable functional layer and the moisture path in the liquid diffusive functional layer are continuous adjacent to each other, the efficiency of sweat absorption and drying is extremely high. In addition, since the pleated portion 6 formed in the laminated sheet 30 is a pleated portion having a structure having an uneven surface formed by the composite layer 31, the breathable functional layer and the liquid diffusive functional layer in the composite layer 31 become uneven As a result, it becomes a state with a large surface area. As a result, the evapotranspiration efficiency of the sweat from the composite layer 31 is further improved.

The material 1 of the present invention can efficiently diffuse the heat radiated from the body, and is excellent in heat dissipation. The heat emitted from the body is transmitted to the layer of the fibrous material 4 through the first fibrous sheet 2, and the heat is diffused in the layer of the fibrous material 4. The fibrous material 4 has the characteristics of liquid diffusibility, and by having liquid diffusivity, it also exhibits thermal diffusivity. The heat diffused and widely dispersed in the layer is diffused to the outside through the second fibrous sheet 3. Therefore, heat does not stay between the body and the material 1, and heat is efficiently dissipated. As in the case of the above-mentioned effect of sweat evapotranspiration, the reason why the material 1 of the present invention can exert such excellent heat dissipation is that the laminated sheet 30 has a composite layer 31, which is a fiber layer having air permeability and a liquid layer The diffusible fiber layers are laminated next to each other, and in the composite layer 31, the air permeable functional layer and the liquid diffusive functional layer interact with each other.

Furthermore, the material 1 of the present invention is also excellent in moisture permeability. In general, in a laminated sheet obtained by laminating a plurality of constituent materials, the moisture permeability tends to decrease as the number of constituent layers increases. In the present invention, the material layer of the fibrous material 4 is increased as compared with a normal laminated sheet formed by laminating two fibrous sheets, so that the number of constituent layers is larger. However, compared with a conventional product having good moisture permeability, it is surprising that the material 1 of the present invention did not show a decrease in moisture permeability, and exhibited the same moisture permeability as a conventional product having good moisture permeability. Although the number of constituent layers is increased, good moisture permeability can be maintained, and it is considered to be a unique effect of the present invention. As described above, it is considered that the reason why such an effect can be exerted is that the laminated sheet 30 has a composite layer 31 which is a fiber layer having air permeability and a fiber layer having liquid diffusivity which are laminated next to each other. In the composite layer 31, the breathable functional layer and the liquid diffusive functional layer interact with each other.

In the case where the fibrous material 4 in the material 1 of the present invention is a paper material, if the paper material is subjected to the embossing treatment as described above and the paper tissue is weakened, the interaction between the breathable functional layer and the liquid diffusion function is further Increasing it can further improve the evapotranspiration, heat dissipation and moisture permeability.

In addition, as an embodiment of the present invention, by printing material 1, it is possible to efficiently and effectively express various designs or messages. The material 1 according to the embodiment of the present invention can exhibit the texture of the raw material of the material, and has excellent overall softness or softness, and can efficiently and effectively provide various functions. Furthermore, the material 1 of the present invention has advantages such that it can be produced economically and is easy to produce. Examples

Hereinafter, specific examples of the stretchable composite sheet used in the present invention will be described to explain the present invention in more detail. (Example 1)

As the breathable sheet, a spun-bonded non-woven fabric was used, and as a liquid diffusive fiber sheet, 100% pulp paper (paper sheet for toilet paper: 18 g / m ² ) was used without printing. Linear elastomer using 620 dtex urethane rubber. Paper and urethane rubber were then passed between two sheets of non-woven fabric with a hot-melt adhesive (total basis weight of the hot-melt adhesive 1.2 g / m ² ), and the obtained total basis weight was 38 g / m ² The sheet material was used as Example 1. (Comparative Example 1)

Using the same non-woven fabric and urethane rubber as in Example 1, sandwiching the urethane rubber between the non-woven fabrics with the hot-melt adhesive (the total weight of the hot-melt adhesive was 1.2 g / m ² ), and the total unit area A sheet material having a weight of 20 g / m ² was used as Comparative Example 1. (Comparative Example 2)

Sheet material to nonwoven front and back surfaces of the as spun bonding nonwoven fabric and in between the non-woven media there rubber diameter of 620 dtex of amine acetate rubbers total basis weight of 24 g / m ² of conventional product of Comparative Example 2. (Comparative Example 3)

As a comparative example 3, a sheet material of a conventional product whose front and back non-woven fabrics are heat-bonded non-woven fabrics with a total unit weight of 22 g / m ² of an urethane rubber having a rubber diameter of 620 dtex is interposed between the non-woven fabrics. (Comparative Example 4)

As a comparative example 4, a non-woven fabric on the front and back sides was made of a heat-bonded non-woven fabric, and a wavy 620 dtex urethane rubber having a total unit area weight of 22 g / m ² was used as a comparative example 4. (Comparative Example 5)

As a comparative example 5, a non-woven fabric with a front surface and a back surface which is a heat-bonded non-woven fabric and a uranium ester rubber having a rubber diameter of 620 dtex and a total basis weight of 20 g / m ² was used as Comparative Example 5.

First, the water-absorbing quick-drying properties (evapotranspiration) and moisture permeability of the sheet raw materials of Examples 1 and Comparative Examples 1 to 5 were evaluated.

First, the water absorption and quick-drying property (evapotranspiration) is subjected to the evapotranspiration (II) test (Japanese Textile Inspection (BOKEN) Standard BQEA028) to comprehensively evaluate both water absorption and fast-drying properties.

A test piece with a diameter of about 9 cm was prepared for each of the sheet materials of Example 1 and Comparative Examples 1 to 5, and the mass (W) of each test piece and the petri dish was measured. Next, 0.1 mL of water was added dropwise to the petri dish, and a test piece was placed thereon to measure the mass (W0). It was placed in a standard state (20 ° C, humidity 65% RH), and the mass (Wt) was measured after a certain period of time (5 minutes, 10 minutes, and every 10 minutes below up to 60 minutes). Based on the measured masses W, W0, and Wt, the following formula (1) is used to calculate the evapotranspiration rate (%) after a specific time elapses.

Evapotranspiration rate (%) = {(W0-Wt) / (W0-W)} × 100 (1)

The results are shown in Table 1.

[Table 1]

From the results of the evapotranspiration rates shown in Table 1, it is clear that the evapotranspiration rates in Comparative Examples 3 to 5 are less than 20% even after 60 minutes have elapsed. In Comparative Examples 1 and 2, the evapotranspiration rate has not reached 20 after 20 minutes. %, Even after 60 minutes, the evapotranspiration rate is still less than 40%. In contrast, in Example 1, after 10 minutes, the evapotranspiration rate exceeded 20%. After 20 minutes, the evapotranspiration rate exceeded 40%. After 30 minutes, the evapotranspiration rate exceeded 60%, after 40 minutes, the evapotranspiration rate exceeded 75%, after 50 minutes, the evapotranspiration rate exceeded 85%, and after 60 minutes, the evapotranspiration rate exceeded 90%.

In addition, in the Japanese textile inspection (BOKEN) standard BQEA028, it is described as follows: As an evaluation standard, when the evapotranspiration rate after 20 minutes from the start of the test is used for sports, it is preferably 50% for woven fabric The above is 40% or more in terms of knitted fabrics. In the case of general use, it is preferably 40% or more in terms of woven fabrics and 30% or more in terms of knits.

Therefore, since the sheet material of Example 1 can obtain an evapotranspiration rate of 40% or more, it can be considered that it can be comfortably worn regardless of sports use or general use.

From the above, it can be seen that the disposable clothes of the present invention using the sheet raw material of Example 1 have extremely high water-absorbing and quick-drying properties (evapotranspiration).

Next, the moisture permeability was evaluated by performing A-1 method (calcium chloride method) of JIS-L1099 (2012), and determining the moisture permeability (g / m ² · h).

In addition, the moisture permeability is defined by converting the mass (g) of water vapor that passes through a fiber product at a specified temperature and humidity into 1 m ^{2 of} the fiber product per hour.

The test piece was collected from the sheet raw materials of Example 1 and Comparative Examples 1 to 5 in accordance with 6.3 (cloth-like sample and test piece) of JIS L0105.

Devices and materials such as a moisture permeable cup, a constant temperature-humidity device, a circular plate, and a hygroscopic agent specified by the calcium chloride method were prepared and tested.

First, add about 33 g of hygroscopic agent to a moisture-permeable cup heated to about 40 ° C, shake the moisture-permeable cup to make the hygroscopic agent uniform, and then smooth the surface with a medicine spoon and use a circular plate. Adjust so that the distance between the hygroscopic agent and the lower surface of the test piece is 3 mm.

Next, for the sheet raw materials of Example 1 and Comparative Examples 1 to 5, three test pieces having a diameter of about 70 mm were collected in accordance with 6.3 of JIS L0105 (cloth-like samples and test pieces) thereof.

Place the surface of each test piece toward the hygroscopic agent side and place it in a concentric circle with respect to the moisture-permeable cup, install the pads and rings in order, fix them with a wing nut, and then install the sides A test body was produced by sealing with a vinyl adhesive tape. The test body was placed on a test piece in a constant temperature-humidity device at a temperature of 40 ° C ± 2 ° C and humidity (90 ± 5)% RH at a position where the wind speed at an upper portion of about 10 mm did not exceed 0.8 m / s. The test body was removed after 1 hour, and the mass (a1) was immediately measured up to 1 mg. After the measurement, the test body was again placed in the same position of the constant temperature-humidity device, and the test body was taken out after 1 hour, and the mass (a2) was measured up to 1 mg. Based on the measured masses a1 and a2, the moisture permeability PA1 (g / m ² · h) was calculated using the following formula (2).

Moisture permeability PA1 (g / m ² · h) = (a2-a1) / SA1 (2)

In the formula (2), a2-a1 is the mass change amount (g / h) of the test body per hour, and SA1 is the moisture permeability area (m ² ).

The test results are expressed in whole numbers according to the rule of JIS Z8401 (rounding method), which is an average of three times. The obtained results are shown in Table 2.

[Table 2]

It is clear from the results of the moisture permeability shown in Table 2 that in Comparative Examples 2, 3, and 5, the moisture permeability was 500 g / m ² · h or less, and that in Comparative Example 1 was 563 g / m ² · h. In Comparative Example 4, the moisture permeability was 526 g / m ² · h. On the other hand, it was 564 g / m ² · h in Example 1, which was higher than that in Comparative Example.

From the above, it can be known that the functional raw materials of the present invention are very stable and have good moisture permeability.

Table 3 shows the results of the moisture permeability evaluation and the results of the evapotranspiration evaluation after 20 minutes and 60 minutes for Example 1 and Comparative Examples 1 to 5.

From the moisture permeability evaluation results and evapotranspiration evaluation results shown in Table 3, it is clear that the functional material raw materials of the present invention in Example 1 are more moisture-permeable than the functional material raw materials of Comparative Examples 1 to 5. , And evapotranspiration, showing higher moisture permeability and higher evapotranspiration rate.

According to the above, the effect of the functional material raw materials for disposable products and disposable textile products of the present invention is significant.

[table 3]

Furthermore, of course, the present invention is not limited to the embodiments described above, and includes all embodiments that can achieve the purpose of the present invention.

Next, the cold contact feeling (cold feeling) and the wet cold contact feeling (sweatiness during sweating) of the contact between the raw material of the sheet with the paper interposed between the non-woven fabrics and the raw material of the sheet with no paper interposed between the non-woven fabrics were tested. (Examples 2 to 5)

Using the same nonwoven fabric, paper, hot-melt adhesive, and urethane rubber as in Example 1, the sheet material was adjusted. The paper used in Examples 2 and 3 was subjected to embossing treatments as shown in Table 4 using a pair of flat rolls. Table 4 shows the basis weight of the paper used, the total basis weight of the hot-melt adhesive, and the total basis weight of the sheet material. For the raw materials of these flakes, the following methods are used to measure the cold feeling of contact and the cold and warm feeling of wet contact. The results of contact cold feeling, wet contact cold and warm feeling, and the ratio of contact cold feeling to wet contact cold and warm feeling (contact cold feeling / wet contact cold and warm feeling) are shown in 5.

Contact cold sensation: Contact cold sensation refers to the degree of coolness and freshness when worn, and it is measured by the following method using a precision rapid thermophysical property measuring device (KES-F7 Thermo Lab II manufactured by Kato Tech Co., Ltd.).

A test piece (6 cm × 6 cm) cut from the sheet raw material was placed on a base plate at 20 ° C. The hot plate with a precision thermal sensor was heated to 40 ° C, the hot plate was placed on a test piece at 20 ° C, and the cold contact value (qmax) was calculated based on the heat dissipation behavior measured by the hot plate's thermal sensor.

Wet contact cold and warm sensation: Wet contact cold and warm sensation indicates the degree of sticky feeling when sweating, and uses a precise and rapid thermophysical property measuring device (KES-F7 Thermo Lab II manufactured by Kato Tech Co., Ltd.) and performs the following method Determination.

A test piece (6 cm × 6 cm) cut from a sheet of raw material was absorbed into 80 g / m ² of water to provide water, and the test piece was placed on a base plate at 20 ° C. The hot plate with a precision thermal sensor was heated to 40 ° C, and the hot plate was placed on a test piece at 20 ° C. The wet contact cold and warm value was calculated based on the heat dissipation behavior measured by the hot plate's thermal sensor (wet- qmax). (Comparative Example 6)

Using the same sheet raw material as Comparative Example 2, the cold contact feeling and wet cold contact feeling were tested in the same manner as in Examples 2 to 5. The results are shown in 5. (Comparative Example 7)

Using the same sheet raw material as Comparative Example 4, the cold feeling on contact and the warm and cold feeling on contact were tested in the same manner as in Examples 2 to 5. The results are shown in 5. (Comparative Example 8)

Using the same sheet material as Comparative Example 3, the cold contact feeling and wet contact cold and warm feeling were tested in the same manner as in Examples 2 to 5. The results are shown in 5. (Comparative Example 9)

Using the same sheet raw material as Comparative Example 5, the cold contact feeling and wet cold contact feeling were tested in the same manner as in Examples 2 to 5. The results are shown in 5.

[Table 4]

[table 5]

2‧‧‧ the first fibrous sheet

3‧‧‧ The second fibrous sheet

4‧‧‧ fiber material

4a‧‧‧print layer

5‧‧‧ Elastic member

5a‧‧‧ Linear Elastomer

6‧‧‧ Pleated

6a‧‧‧ convex

6b‧‧‧ recess

7‧‧‧ Adjacent layer

8‧‧‧ non-adherent

9‧‧‧ space

10‧‧‧ Underwear

12‧‧‧ Abdominal wearing part

14‧‧‧ Waist Wear

16‧‧‧ Elastic sheet

18‧‧‧ Absorber

100‧‧‧ Underwear (or T-shirt)

101‧‧‧ flat mouth ride

102‧‧‧ Abdominal band

103‧‧‧ Rain gear

104‧‧‧ Guard band

105‧‧‧ Bandage

200‧‧‧Skin

300‧‧‧ Khan

P‧‧‧User

Z‧‧‧ Adhesive penetration unit

FIG. 1 is a plan view showing an embodiment of a material for a disposable fiber product according to the present invention. FIG. 2 is a perspective view of the material shown in FIG. 1. FIG. FIG. 3 is an enlarged view of a main part of the material shown in FIG. 1. Fig. 4 is a sectional view taken along line A-A in Fig. 3. Fig. 5 is a sectional view taken along line B-B in Fig. 3. Fig. 6a to Fig. 6j are schematic diagrams showing the arrangement of the elastic members constituting the material of the present invention, respectively. FIG. 7 is a front view of an underwear (T-shirt) made of the material of the present invention as a disposable fiber product of the present invention. Fig. 8 is a perspective view showing a wearing state of a garment (a flat fit in a flat mouth) as a disposable fiber product of the present invention. Fig. 9 is a front view of a belly band as a disposable fiber product of the present invention. Fig. 10 is a perspective view of a rain gear as a disposable fiber product of the present invention. 11a to 11e are perspective views showing a wearing state of a supporter as a disposable fiber product of the present invention. Fig. 12 is a perspective view of a bandage as a disposable fiber product of the present invention. 13a to 13c are explanatory diagrams explaining the function of the pleated portion in the material of the present invention. Fig. 14 is a sectional view of a main part of a laminated sheet constituting the material of the present invention. FIG. 15 is a conceptual diagram for explaining a space formed between the second fibrous sheet and the fibrous material. FIG. 16 is a schematic view showing an adhesive penetrating portion formed in a layer of a fibrous material. Fig. 17 is a view showing a wearing state of a shorts-type diaper as a disposable fiber product of the present invention. FIG. 18 is an explanatory diagram for explaining a water evapotranspiration (II) test (Japanese Textile Inspection (BOKEN) Standard BQEA028) in Examples. FIG. 19 is a graph showing an evapotranspiration rate showing the evapotranspiration of water in Examples and Comparative Examples. FIG. 20 is a graph showing moisture permeability showing moisture permeability in Examples and Comparative Examples.

Claims (8)

A disposable fiber product material is composed of a laminated sheet including a first fibrous sheet having air permeability, a second fibrous sheet having air permeability, and the first fibrous sheet interposed therebetween. A fibrous material having liquid diffusibility between the sheet and the second fibrous sheet, and the first fibrous sheet, the second fibrous sheet, and the fibrous material are laminated together with an elastic member; the laminated sheet Each of the first fibrous sheet, the fibrous material, and the second fibrous sheet is bonded to each other, and the elastic member is bonded to the laminated sheet over its longitudinal direction; the laminated sheet has the An elastic member to form a pleated portion of an uneven surface; the concave portion and the convex portion of the uneven surface of the pleated portion are both the first fibrous sheet and the fiber material adjacent to the first fibrous sheet, and A layer formed by laminating the second fibrous sheet adjacent to the fiber material; and the material for the disposable fiber product has an evapotranspiration (II) test Japan spinning inspection standard (BOKEN) BQEA028) after the start of the test after 20 minutes was 40% of the ET evaporable. For example, the material for disposable fiber products in the scope of patent application No. 1 has the evapotranspiration rate of 90% or more after 60 minutes after the test starts in the evapotranspiration (II) test (Japanese Textile Inspection Standard BQEA028). For example, the material for a disposable fiber product according to item 1 or 2 of the scope of patent application, wherein the first fibrous sheet and the fiber material are intermittently joined through the elastic member. For example, the material for a disposable fiber product according to any one of claims 1 to 3, wherein the second fibrous sheet and the fiber material are intermittently bonded. For example, the material for disposable fiber products according to any one of claims 1 to 4, wherein the elastic member is composed of a plurality of linear elastic bodies having elasticity, and the plurality of linear elastic bodies are provided with spaces. It is arranged in the width direction of the laminated sheet, and is bonded between the first fibrous sheet and the fibrous material. For example, the material for disposable fiber products according to any one of claims 1 to 5, wherein the above-mentioned fiber material is composed of a raw material having liquid diffusibility and liquid permeability. For example, the material for disposable fiber products according to any one of claims 1 to 6, wherein the fiber material is made of paper material. For example, the material for a disposable fiber product according to any one of claims 1 to 7, wherein the fiber material has an adhesive permeation portion formed by penetrating the adhesive used for the bonding.