JP2020203421A - Laminate and patch comprising the same - Google Patents

Abstract

To provide a laminate which can provide an industrial material with excellent performance, and a patch comprising the laminate.SOLUTION: Provided is a laminate of a film and a fiber sheet, where at least a portion of a peripheral part of the film and at least a portion of a peripheral part of the fiber sheet are integrated. That is, in at least a portion of the peripheral part of the laminate, the film and the fiber sheet are integrated. Therefore, for example, even when a patch is prepared by arranging a layer of functional component between the film and the fiber sheet in a laminate which satisfy the present configuration, the peripheral portion of the layer of a functional component is not exposed to outer air at the integrated portion (a portion of the end part) in the prepared patch. As a result, there can be reduced a fear that performance of the layer deteriorates severely and a fear that the layer is contaminated. Thus, the present invention is a laminate which can provide an industrial material having excellent performance.SELECTED DRAWING: Figure 2

Description

The present invention relates to a laminate capable of providing an industrial material having excellent performance, and a patch having the laminate.

Conventionally, a laminate of a film and a fiber sheet (hereinafter, may be abbreviated as a laminate) has been used for various industrial material applications. As a specific example, the applicant has applied the interlining (Japanese Patent Laid-Open No. 62-212487 ,: Patent Document 1), the molded ceiling material for automobiles (Japanese Patent Laid-Open No. 63-028640: Patent Document 2), and the laminated body so far. It has been studied to use it for a drug support (Japanese Patent Laid-Open No. 2005-162638: Patent Document 3).
The patch includes a poultice containing a functional ingredient, a plaster agent, a cooling sheet, a sheet-shaped pack for moisturizing and whitening, and the like.

In recent years, it has been studied to use the laminate as a constituent member of a water-containing patch as disclosed in, for example, Japanese Patent Application Laid-Open No. 2005-111159 (Patent Document 4).
Patent Document 4 discloses a water-containing patch comprising a separation layer such as a fiber sheet and a laminate of a liner such as a film, and an adhesive layer between the separation layer and the liner. Then, such a water-containing patch is used by sticking the main surface of the adhesive layer exposed by separating the liner from the water-containing patch to the skin to be attached.
In Patent Document 4, as a specific example of the water-containing patch (FIGS. 1 and C represent an adhesive layer and D represents a liner), the entire periphery of the adhesive layer is exposed to the outside air (FIG. 1 (a)). Alternatively, (b) of FIG. 1 is disclosed.

Japanese Unexamined Patent Publication No. 62-212487 Japanese Unexamined Patent Publication No. 63-028640 Japanese Unexamined Patent Publication No. 2005-162638 Japanese Unexamined Patent Publication No. 2005-111159

The applicant of the present application has continued to study in order to provide a laminate of a film and a fiber sheet, which can provide an industrial material having more excellent performance, with reference to the above-mentioned prior art.
As an example, a laminate as disclosed in Patent Document 4 (a laminate that can be used as a constituent member of a patch and is provided with a layer that plays a role of a liner) was examined.
As a result of this study, when a patch having the configuration disclosed in Patent Document 4 is prepared using a laminate according to a conventional technique in which a film and a fiber sheet are merely laminated, a layer having a functional component (a layer having a functional component ( For example, since the entire periphery of the adhesive layer referred to in Patent Document 4) is exposed to the outside air,
-If water or functional agents in the layer are released from the entire surroundings, there is a problem that the performance of the layer may be significantly reduced, and
-The problem that dust etc. easily adheres to the entire circumference of the layer and the layer may be contaminated.
However, there is a limit to the provision of a patch having excellent performance.
As described above, the laminate according to the prior art has a limit in providing an industrial material having excellent performance.

The first invention according to the present invention is "a laminate of a film and a fiber sheet, wherein at least a part of the peripheral portion of the film and at least a part of the peripheral portion of the fiber sheet are integrated. . ".

A second invention according to the present invention claims that "the entire peripheral edge portion of the film is integrated with the fiber sheet, and / or the entire peripheral edge portion of the fiber sheet is integrated with the film. 1 is described in 1. ”.

Further, the third invention according to the present invention is "the laminate according to claim 1 or 2, wherein the peel strength between the film and the fiber sheet at the integrated portion is less than 29.0 N / 3 cm. . ".

A fourth invention according to the present invention is "a patch comprising a functional component between the film and the fiber sheet in the laminate according to any one of claims 1 to 3." Is.

As a result of continued examination, the applicant of the present application has found that "a laminate of a film and a fiber sheet, at least a part of the peripheral portion of the film and at least a part of the peripheral portion of the fiber sheet are integrated". By doing so, the above-mentioned problem was solved.
That is, since the film and the fiber sheet are integrated at least in a part of the peripheral portion of the laminate, for example, a layer of the functional component is provided between the film and the fiber sheet in the laminate satisfying this configuration and the patch. Even in the case of preparing the above, the peripheral portion of the layer of the functional component is not exposed to the outside air in the integrated portion (part of the end portion) of the prepared patch. As a result, it is possible to reduce the risk that the performance of the layer is significantly reduced and the risk that the layer is contaminated.
Therefore, the first invention according to the present invention is a laminate capable of providing an industrial material having excellent performance.

Further, in the second invention according to the present invention, the entire peripheral edge portion of the film is integrated with the fiber sheet, and / or the entire peripheral edge portion of the fiber sheet is integrated with the film.
Therefore, the second invention according to the present invention is a laminate capable of providing an industrial material having more excellent performance by more effectively exerting the above-mentioned functions.

Furthermore, the applicant of the present application has found that if the peel strength between the film and the fiber sheet at the integrated portion is 29.0 N / 3 cm or more, it becomes difficult to separate the film and the fiber sheet by hand. ..
On the other hand, in the laminate satisfying the configuration of the present invention, the film and the fiber sheet can be easily separated by hand because the peel strength between the film and the fiber sheet at the integrated portion is less than 29.0 N / 3 cm. ..
Therefore, the third invention according to the present invention is a laminate capable of providing an industrial material having more excellent performance.

A fourth invention according to the present invention is a patch having a functional component between a film forming a laminate and a fiber sheet.
Therefore, the fourth invention according to the present invention is a patch having a function of reducing the risk that the performance of the layer containing the functional component is significantly deteriorated and the risk that the layer is contaminated. Then, it is possible to provide a patch having a function that the film and the fiber sheet can be easily separated by hand.

A schematic cross-sectional view showing a cross-sectional structure in the thickness direction of a specific example of a water-containing patch disclosed in Patent Document 4. The schematic cross-sectional view which showed the cross-sectional structure in the thickness direction of a part including the peripheral part of the laminated body which provided with the structure of this invention. A schematic plan view of a laminate having the configuration of the present invention as viewed from the film side.

In the present invention, various configurations such as the following configurations can be appropriately selected.

The laminated body (100) of the present invention will be described mainly with reference to FIG. 2 showing the cross-sectional structure of the laminated body (100) and FIG. 3 showing the aspect of the laminated body (100) viewed from the film (11) side. .. In addition, in FIG. 2, in order to make it easier to understand in the drawing, a state in which a gap exists between the film (11) and the fiber sheet (12) is shown, and the gap is shown by hatching like a block pattern. There is.
Although not shown in FIGS. 2 and 3, a functional component is provided between the film (11) and the fiber sheet (12) in the laminated body (100) (such as the voids shown by the block pattern-like hatching). This makes it possible to prepare a patch.

As shown in FIG. 2, the laminate (100) includes a film (11) and a fiber sheet (12), and is configured to face each other's main surfaces. Then, at least a part of the peripheral portion (13) of the film and at least a part of the peripheral portion (14) of the fiber sheet are integrated with each other. The peripheral edge portion refers to a peripheral edge (peripheral peripheral edge) including the outer peripheral surface when each of the film (11) and the fiber sheet (12) is viewed from the main surface. Specifically, it refers to a range of up to 6 mm from the outer circumference to the center of the main surface. Further, in FIGS. 2 and 3, at least a part of the peripheral portion (13) of the film and at least a part of the peripheral portion (14) of the fiber sheet are integrated (hereinafter, the integrated portion). (Sometimes referred to as) is represented by the number 15. From this, the integrated portion (15) exists in a range of at least 6 mm from the outer circumference toward the center of the main surface.

The laminated body (100) may have a portion where the integrated portion (15) does not exist on the outer peripheral periphery of each of the film (11) and the fiber sheet (12). A laminated body (100) having such an embodiment is preferable because it is easy to pinch the portion with a finger and separate the film (11) and the fiber sheet (12).

FIG. 3 shows a schematic plan view of the laminated body (100) as viewed from the film side. As shown in FIG. 3, when the outer peripheral shapes of the film (11) and the fiber sheet (12) in the laminated body (100) are the same, the laminated body (100) is formed into a film (100) as shown in FIG. Even when viewed from the 11) side, the fiber sheet (12) cannot be directly seen because it is blocked by the film (11).

In FIG. 3, the integrated portion (15) is indicated by diagonal lines. FIG. 3A shows an example of the laminated body (100) in which a portion (15) integrated with the entire two opposing sides of the laminated body (100) is continuously present, and FIG. 3B shows an example. In FIG. 3 (c), an example of a laminated body (100) in which a portion (15) integrated with the entire outer peripheral surface of the laminated body (100) is continuously present is shown on the entire outer peripheral surface of the laminated body (100). An example of a laminated body (100) in which an integrated portion (15) is intermittently present is shown.

In the laminate (100) according to the present invention, the film (11) and the fiber sheet (12) are integrated at least in a part of the peripheral portion. Therefore, for example, in the laminate (100) satisfying this configuration, the functional component is contained between the film (11) and the fiber sheet (12) (the portion in FIG. 2 where the block pattern-like hatching is applied). When the patch is prepared by providing the layer, the peripheral portion of the layer of the functional component is not exposed to the outside air in the integrated portion (15) of the prepared patch.

In particular, when the entire peripheral edge portion (13) of the film is integrated with the fiber sheet (12, at least a portion of the peripheral edge portion of the fiber sheet) and / or the entire peripheral edge portion (14) of the fiber sheet is the film (11). , At least a portion of the peripheral portion of the film), the layer of functional component is not exposed to the outside air in the peripheral portion of the patch.

Further, the applicant of the present application separated the film (11) from the laminated body (100) having a peel strength of 29.0 N / 3 cm or more, and the film (11) remained on the fiber sheet (12) after the separation. I found that. When the fiber sheet (12) in which the film (11) remains is used as a patch, for example, the presence of the remaining film (11) makes it impossible to provide a patch having a poor sticking feeling and an excellent sticking feeling. I was afraid.
On the other hand, the fiber sheet (12) after being separated by the laminated body (100) having a peel strength of less than 29.0 N / 3 cm between the film (11) and the fiber sheet (12) in the integrated portion (15). ), It has been found that a laminate (100) capable of preventing the film (11) from remaining can be provided.
Therefore, the laminate (100) of the present invention can provide an industrial material having excellent performance.

The film (11) as used in the present invention refers to a sheet-like structure of metal and / or polymer.
The type of polymer that can form the film can be appropriately selected. For example, a polyolefin resin (polyethylene, polypropylene, polymethylpentene, a polyolefin resin having a structure in which a part of hydrocarbon is replaced with a cyano group or a halogen such as fluorine or chlorine). Etc.), styrene resin, polyether resin (polyetheretherketone, polyacetal, phenol resin, melamine resin, urea resin, epoxy resin, modified polyphenylene ether, aromatic polyetherketone, etc.), polyester resin (Polyethylene terephthalate, polytrimethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polybutylene naphthalate, polycarbonate, polyarylate, total aromatic polyester resin, unsaturated polyester resin, etc.), polyimide resin, polyamideimide resin, polyamide resin Resin (for example, aromatic polyamide resin, aromatic polyetheramide resin, nylon resin, etc.), resin having a ditryl group (for example, polyacrylonitrile), urethane resin, epoxy resin, polysulfone resin (polysulfone, poly). Polyacrylonitrile-based copolymerized with ether sulfone, etc.), fluorine-based resin (polytetrafluoroethylene, polyvinylidene fluoride, etc.), cellulose-based resin, polybenzoimidazole resin, acrylic resin (for example, acrylic acid ester or methacrylate ester, etc.) A known polymer such as a resin, a modaacrylic resin obtained by copolymerizing acrylonitrile with vinyl chloride or vinylidene chloride) can be used.
In addition, these polymers may be composed of either a linear polymer or a branched polymer, the polymer may be a block copolymer or a random copolymer, and the three-dimensional structure and crystallinity of the polymer may be present. Can be anything.
Furthermore, a plurality of polymers may be provided, or a mixed polymer obtained by mixing a plurality of polymers may be provided.

Among these exemplified polymers, a film (11) made of a thermoplastic polymer is preferable because it can be easily melted and integrated with the fiber sheet (12) by ultrasonic welding, heat sealing, or fusing. In particular, the film (11) made of polypropylene resin or polyester resin alone is preferable because it has features such as difficulty in adsorbing chemicals such as functional components.

A laminated film obtained by laminating a plurality of types of sheet-like structures may be used.
Further, the film (11) may contain a functional component. The type of functional component can be appropriately selected depending on the required function, and is not limited, but is not limited to, for example, an antibacterial agent, a bactericidal agent, an antiviral agent, an antifungal agent, and a catalyst (for example, titanium oxide, manganese dioxide, or platinum). Examples include supported alumina), humidity control agents (for example, silica gel and silica microcapsules), deodorants such as activated carbon and carbon black, pigments, air fresheners, cation exchange resins and anion exchange resins.

Although various configurations and physical properties such as basis weight and thickness of the film (11) are those that can be appropriately adjusted, the basis weight may be 5 to 100 g / ^{m 2,} it can be a 10~90g / ^{m 2} It can be 15 to 80 g / m ² . The thickness can be 0.05 to 1.5 mm, 0.1 to 1 mm, and 0.2 to 0.8 mm.
The "metsuke" in the present invention means the mass per 1 m ² of the area on the main surface, and the main surface means the surface having the largest area. Further, the "thickness" referred to in the present invention is a value measured by a high-precision digital length measuring machine (Lightmatic (registered trademark) manufactured by Mitutoyo Co., Ltd.), and specifically, with respect to the main surface of the object to be measured. The value of the thickness in the region when a load of 100 gf is applied to the load region of 5 cm ² .

Further, although the strength of the film (11) can be adjusted as appropriate, when the film (11) and the fiber sheet (12) are separated by hand, the film (11) has a strength that is unlikely to break or undergo a large structural change. It is preferable to do.

The size of the film (11) is appropriately selected depending on the use of the laminated body (100), but when the laminated body (100) is viewed from one main surface side, it is the same as the fiber sheet (12). There can be. Alternatively, the size of the film (11) may be larger or smaller than the fiber sheet (12).

The film (11) may or may not have holes, but in a patch application, water and functional components contained in a layer of functional components pass through the film (11). It is difficult to do so, and it is easy to prevent the performance of the layer containing the functional component from being deteriorated. Therefore, the laminated body (100) provided with the film (11) having no pores is preferable. Further, the surface of the film (11) may be smooth or may have irregularities such as a pattern. Having the unevenness is preferable because the film (11) can be easily grasped by hand and the film (11) and the fiber sheet (12) can be easily separated by hand.

The fiber sheet (12) refers to a sheet-like structure containing fibers, and can be a cloth (for example, a fiber web, a non-woven fabric, a woven fabric such as a knit or a mesh, or a knitted fabric). The fiber sheet (12) is preferably a fiber web or a non-woven fabric because it is easy to realize a laminate (100) that is particularly flexible and can provide an industrial material having more excellent performance.

When the fiber sheet (12) contains adhesive fibers (for example, fibers having a thermoplastic resin having a low melting point on the surface), fusion and integration with the film (1) are preferably performed, and the performance is more excellent. It is easy to realize a laminate (100) capable of providing industrial materials. Therefore, the fiber sheet (12) preferably contains adhesive fibers.
The ratio of the adhesive fiber to the constituent fibers of the fiber sheet (12) is appropriately selected, but if the ratio of the adhesive fiber is too large, it is difficult to realize a laminate (100) having a peel strength of less than 29.0 N / 3 cm. Tends to be. On the other hand, if the ratio of the adhesive fibers is too small, the laminate (100) has a weak peeling strength, so that it is intended when a force acts on the laminate (100) during the manufacturing process or handling of industrial materials. There is a risk that the fiber sheet (11) and the film (12) will form a laminated body (100) that can be easily separated. Therefore, the mass percentage of the adhesive fiber in the constituent fibers of the fiber sheet (12) is preferably 1 to 50% by mass, preferably 3 to 35% by mass, and 5 to 20% by mass. preferable.

Further, the fiber sheet (12) preferably contains crimped fibers because it is easy to realize a laminate (100) capable of providing an industrial material having more excellent performance due to its excellent elasticity. The crimped fiber referred to here is, for example, a fiber having a crimp or a fiber in which the crimp of a latent crimpable fiber is expressed (for example, a composite fiber such as a core sheath type, a sea island type, a side-by-side type, an orange type, etc. ). In addition. The mass percentage of the crimped fibers in the constituent fibers of the fiber sheet (12) is appropriately adjusted, but can be 30 to 95% by mass, 40 to 80% by mass, and 40 to 70. Can be% by mass.

The polymer forming the constituent fibers of the fiber sheet (12) can be appropriately selected, and for example, a polymer similar to the polymer mentioned as being able to form the film (11) can be adopted.
In addition, these polymers may be composed of either a linear polymer or a branched polymer, the polymer may be a block copolymer or a random copolymer, and the three-dimensional structure and crystallinity of the polymer may be present. Can be anything.
Furthermore, a plurality of polymers may be provided, or a mixed polymer obtained by mixing a plurality of polymers may be provided.

Among these exemplified polymers, a laminate (100) capable of providing an industrial material having excellent performance is preferably melt-integrated with the film (11) by ultrasonic welding, heat sealing, or fusing. Since it is easy to realize, the fiber sheet (12) provided with fibers made of polypropylene-based resin or fibers made of polyester-based resin (particularly, having fibers made of polypropylene-based resin) is used. It is more preferable that the fiber sheet (12) is composed of only the fibers.

The mass percentage of the fiber composed of polypropylene resin in the constituent fiber of the fiber sheet (12) is preferably melt-integrated with the film (11), has the required peel strength, and is an industrial material having more excellent performance. The laminate (100) can be appropriately adjusted so as to be able to provide the above, but the percentage is preferably 5% by mass or more, and preferably 10% by mass or more. On the other hand, if the percentage is too high, it tends to be difficult to realize a laminated body (100) having a peel strength of less than 29.0 N / 3 cm. Therefore, the percentage is preferably 90% by mass or less. , 80% by mass or less, preferably 70% by mass or less, preferably 60% by mass or less, preferably 50% by mass or less, and preferably 40% by mass or less. , 30% by mass or less, and preferably 20% by mass or less.

The fineness and fiber length of the fibers constituting the fiber sheet (12) can be appropriately selected, but the fineness can be 0.6 dtex to 6.6 dtex and the fineness is 0.9 dtex to 4.4 dtex. The fineness can be 1.3 dtex to 3.3 dtex.
The fibers constituting the fiber sheet (12) may be short fibers (fibers cut to a specific length, etc.) or long fibers (including fibers not cut to a specific length prepared by a direct spinning method). it can. In particular, the fiber sheet (12) provided with short fibers as constituent fibers is preferable so that the extensibility of the fiber sheet (12) containing crimped fibers can be preferably exhibited, and the constituent fibers are only short fibers. It is more preferably a certain fiber sheet (12).
The short fiber referred to here refers to a fiber having a fiber length of 100 mm or less. Further, the long fiber referred to here refers to a fiber having a fiber length longer than 100 mm, and a fiber having a fiber length longer than 100 mm and having difficulty in specifying the fiber length (continuous fiber) is also regarded as a long fiber. The "fiber length" refers to the fiber length measured according to JIS L1015 (2010), 8.4.1c direct method (C method).

The fibers constituting the fiber sheet (12) include, for example, one or more types of melt spinning method, dry spinning method, wet spinning method, direct spinning method (melt blow method, spunbond method, electrostatic spinning method, etc.), and composite fibers. It can be obtained by a known method such as a method of extracting fibers having a small fiber diameter by removing the resin component and a method of beating the fibers to obtain divided fibers.
When the fiber sheet (12) is a woven fabric or a knitted fabric, it can be prepared by weaving or knitting the fibers prepared as described above.

When the fiber sheet (12) is a non-woven fabric, for example, a dry method, a wet method, or the like can be used as a method for preparing a fiber web capable of producing the non-woven fabric. Then, as a method of entwining and / or integrating the fibers constituting the fiber web to form a non-woven fabric, for example, a method of entwining the fibers by a needle or a water stream, a method of integrating the fibers with a binder, or a fiber web When the thermoplastic resin is contained, a method of melting the thermoplastic resin by heat-treating the fiber web to integrate the fibers with each other can be mentioned. As a binder that integrates the fibers, it can be selected and adopted from the above-mentioned polymers and the like. As a method for heat-treating the fiber web, for example, a method of heating and pressurizing with a calender roll, a method of heating with a hot air dryer, a method of irradiating infrared rays under no pressure, and the like can be used.
Alternatively, a direct spinning method may be used to reduce the diameter of the spinning solution or the molten resin and spin it directly, and collect the fibers to prepare a fiber web or a non-woven fabric.

In particular, since it is possible to prevent an unintended reaction with the functional component of the patch, it is preferable that there is no binder other than the constituent fibers. From this viewpoint, the fibers of the fiber sheet (12) have needles or needles. It is preferable that the non-woven fabric is entangled and integrated by a water stream and / or the non-woven fabric in which fibers are adhered and integrated by adhesive fibers.

The fiber sheet (12) may be made of one kind of cloth, but may be made of a plurality of kinds of cloths or a plurality of kinds of cloths. As a specific example, a non-woven fabric prepared by laminating a plurality of types of fiber webs or a laminated non-woven fabric prepared by laminating a plurality of types of non-woven fabrics may be used as a fiber sheet (12).

The fiber sheet (12) can be easily fused and integrated with the film (1), and can easily realize a laminate (100) having the required peel strength and capable of providing an industrial material having more excellent performance. The main surface on the side in contact with the film (11) is preferably containing fibers containing a thermoplastic resin (adhesive fibers or the like). Further, when used as a base material for a patch, it is preferable that the main surface on the side opposite to the side in contact with the film (11) contains crimp fibers because it is excellent in followability to the body.

Further, the fiber sheet (12) may contain a functional component. Since the type of the functional component can be appropriately selected depending on the required function, there is no limitation, and examples of the functional component that can be included in the film can be mentioned.
The functional component is present in the form of particles on the surface of the fibers constituting the fiber sheet (12), inside the fibers and / or in the voids, or a part or all of the fibers constituting the fiber sheet (12). It can exist in the form of a film so as to cover.
The method of supporting the functional component on the fiber sheet (12) can be appropriately selected. For example, a solution or dispersion of the functional component, or a solution or dispersion of the functional component containing a binder is used as the fiber sheet (12). A method of removing the solvent or dispersion medium after supporting it on one main surface or both main surfaces by spraying or using a known coating method (for example, a kiss coating method using a gravure roll, a die coating method, etc.). , A method of removing the solvent or the dispersion medium after immersing the fiber sheet (12) in the above-mentioned solution or dispersion and pulling it up can be adopted.

Of the fiber sheet (12), although various configurations and physical properties such as basis weight and thickness are those capable appropriately adjusted, it basis weight may be 10 to 200 g / ^{m 2,} a 20~180g / ^{m 2} It can be 30 to 160 g / m ² . And the thickness can be 0.05-3.0 mm, 0.1-2.0 mm, 0.2-1.5 mm.
The strength of the fiber sheet (12) can be adjusted as appropriate, but when the film (11) and the fiber sheet (12) are separated by hand, the fiber sheet (12) is unlikely to break or undergo a large structural change. It is preferable to have.

The embodiment in which the peripheral portion (13) of the film and the peripheral portion (14) of the fiber sheet are integrated can be appropriately selected as long as the configuration of the present invention is satisfied. For example, a mode in which the film (11) and the fiber sheet (12) are adhered and integrated by a binder, a mode in which the film (11) and the fiber sheet (12) are adhered and integrated by interposing a double-sided adhesive tape in between, points. It can be an embodiment in which the constituent components of the film (11) and / or the constituent components of the fiber sheet (12) are melted and fused and integrated by ultrasonic sealing such as a seal or fusing.
Further, the integrated portion (15) may be formed continuously or intermittently. As a specific example, when the laminated portion of the film (11) and the fiber sheet (12) is fusing, the integrated portion (15) formed by the fusing is continuously present, which is a point. When the constituent components of the film (11) and / or the constituent components of the fiber sheet (12) are melt-integrated by the seal, the integrated portion (15) is in an aspect of being intermittently present.
The area of the integrated portion (15) can be appropriately selected as long as the configuration of the present invention is satisfied.

For example, in addition to the embodiment shown in FIG. 3A, there may be a continuous presence of a portion (15) integrated only on one side of the laminated body (100), or three sides of the laminated body (100). There may be a mode in which the portion (15) integrated with the whole exists continuously.

In particular, the embodiment in which the entire peripheral edge portion (13) of the film is integrated with the fiber sheet (12) and / or the entire peripheral edge portion (14) of the fiber sheet is integrated with the film (11). In other words, it is an embodiment in which a portion (15) integrated so as to surround the central portion of the film (11) exists as shown in FIGS. 3 (b) and 3 (c). , It is preferable to be able to provide a laminate (100) capable of providing an industrial material having more excellent performance. In particular, when a portion (15) integrated so as to surround the central portion of the film (11) is continuously present as shown in FIG. 3 (b), it is possible to provide an industrial material having more excellent performance. It is preferable that the laminated body (100) can be provided.

In the laminated body (100) of the present invention, the peel strength between the film (11) and the fiber sheet (12) at the integrated portion (15) is preferably less than 29.0 N / 3 cm. The peel strength means a value obtained by applying the laminated body (100) to be measured to (a method for measuring the peel strength).

(Measuring method of peel strength)
1. 1. A sample piece (short side) having a portion (15) continuously integrated from one long side to the other long side on the peripheral edge of one short side of the test piece to be collected from the laminated body (100). : 3 cm, long side: longer than 3 cm) was collected.
2. 2. The film (11) and the fiber sheet (12) are separated by subjecting the collected sample piece to a constant-speed extension type tensile tester (manufactured by Orientec, Tensilon, chuck interval: 40 mm, tensile speed: 50 mm / min). The maximum load up to was measured.
At the time of measurement, the sample piece is measured in the following manner by using both chucks (the lower chuck on the gravity direction side and the upper chuck on the gravity direction opposite to the lower chuck) provided in the constant speed extension type tensile tester. I sandwiched it.
-The sample piece was spread so that the fiber sheet and the film were separated from each other with the integrated portion (15) as a fulcrum. Then, kraft tape was attached to other than the integrated portion (15) on one of the main surfaces of the spread test piece. This kraft tape plays a role of preventing unintentional shrinkage of the width in the short side direction of the film and the fiber sheet constituting the test piece during the measurement of the peel strength.
-The fiber sheet (the part where the kraft tape is stretched) is sandwiched and fixed to the lower chuck so that the integrated part (15) is not pinched by the chuck, and the film (the kraft tape is stretched) to the upper chuck. The part) was sandwiched and fixed.
-The end of the lower chuck on the upper chuck side and the integrated portion (15) form the shortest distance so that they are adjacent to each other.
-The extension direction of the sample piece by both chucks and the integrated part (15) in the test piece are made perpendicular to each other.
3. 3. The test piece is pulled in a direction perpendicular to the integrated portion (15), and the value of the maximum load (unit: N / 3 cm) measured until the film (11) and the fiber sheet (12) are separated is obtained. , Peeling strength (unit: N / 3 cm).

In the laminate (100) of the present invention, the peel strength between the film (11) and the fiber sheet (12) at the integrated portion (15) is the same as that of the laminate (100) capable of providing an industrial material having excellent performance. It can be adjusted as appropriate to achieve this. The peel strength is a value larger than 0N / 3cm or more, can be 1N / 3cm or more, can be 2N / 3cm or more, can be 3N / 3cm or more, and can be 4N / 3cm or more. It can be 5N / 3cm or more. Further, the peel strength can be 25 N / 3 cm or less, 20 N / 3 cm or less, and 15 N / 3 cm or less.
Laminate (100), although various configurations and physical properties such as basis weight and thickness are those capable appropriately adjusted, it basis weight may be 10 to 200 g / ^{m 2,} a 20~180g / ^{m 2} It can be 30 to 160 g / m ² . And the thickness can be 0.05-3.0 mm, 0.1-2.0 mm, 0.2-1.5 mm.

The laminate (100) of the present invention can be used as it is for various industrial material applications, but may further include members such as a porous body, a foam, another film, and another fiber sheet. Further, the laminate (100) of the present invention is shaped according to a step of pressurizing treatment such as a reliant press treatment to smooth the surface, a step of heat molding, a step of hydrophilizing treatment, an application and a mode of use. It may be used for various secondary processing processes such as a punching process.

By providing a functional component between the film (11) and the fiber sheet (12) in the laminate (100) of the present invention (such as the voids shown by the block pattern-like hatching in FIG. 2), the coating is applied. The agent can be prepared. Functional ingredients are selected according to the type of patch, but as functional ingredients, agents that are absorbed into the body through the skin and act, menthol and other cooling agents that cool or give a feeling of coldness, vitamins and other cosmetics for the skin You can use cosmetics that give an effect. The functional component may be a solid, a liquid, or a gel.
Further, a patch may be used in which only the functional component is provided between the film (11) and the fiber sheet (12), but a mixture of the functional component and the pressure-sensitive adhesive is placed between the film (11) and the fiber sheet (12). A sticking agent provided in the above, a porous body or a foam containing a functional component, or a member such as another film or another fiber sheet is provided between the film (11) and the fiber sheet (12). It may be an agent.

Hereinafter, the present invention will be specifically described with reference to Examples, but these do not limit the scope of the present invention.

(Preparation of film)
An unstretched polypropylene film (weight: 25 g / m ² , thickness: 0.1 mm) was prepared. Then, a rectangular section (short side: 8 cm, long side: 10 cm) was cut out.

(Example 1)
Latent crimped fibers of polypropylene resin (side-by-side type, cross-sectional shape of fibers: circular, fineness: 2.2 dtex, fiber length: 44 mm) are subjected to a card machine and then subjected to a water flow entanglement device to entangle the fibers. The fibers were combined and water was removed to prepare a water flow entangled non-woven fabric (grain: 85 g / m ² , thickness: 0.85 mm). Then, a rectangular section (short side: 8 cm, long side: 10 cm) was cut out.
With the section of the film and the section of the water-flow entangled non-woven fabric overlapped, a continuous 5 cm fusing in a straight line was manually performed at a speed of 5 cm / 6 seconds using an ultrasonic handy welding machine in the center. None, then by cutting out to form a rectangular shape (short side: 3 cm, long side: 5 cm) with the fused part as the short side, in a part of the peripheral part of the film and the peripheral part of the water flow entangled non-woven fabric. A laminate was prepared in which a part was continuously melted and integrated. An ultrasonic handy welding machine was used for fusing, and continuous fusing of a straight line of 5 cm was performed manually at a speed of 5 cm / 6 seconds.

(Examples 2 to 4)
Latent crimp fiber of polyester resin (side-by-side type, cross-sectional shape of fiber: circular, fineness: 2.2dtex, fiber length: 51 mm) 65% by mass, single fiber of polyester-based resin (cross-sectional shape of fiber: circular, fineness: After applying 15% by mass of a single fiber of polypropylene resin (cross-sectional shape of fiber: circular, fineness: 2.2dtex, fiber length: 50mm) to a card machine, 15% by mass of 2.2dtex, fiber length: 51mm), and then a needle. The fibers were entangled with each other by being applied to a punching machine to prepare a needle punched non-woven fabric 1 (grain: 105 g / m ² , thickness: 1.1 mm).
A total of three laminates were prepared in the same manner as in Example 1 except that the needle punched nonwoven fabric 1 was used instead of the water flow entangled nonwoven fabric and the pressure applied to the laminate during fusing was slightly changed. ..

(Examples 5 to 7)
Latent crimp fiber of polyester resin (side-by-side type, cross-sectional shape of fiber: circular, fineness: 2.2dtex, fiber length: 51 mm) 55% by mass, single fiber of polyester-based resin (cross-sectional shape of fiber: circular, fineness: After supplying 35% by mass of a single fiber of polypropylene resin (cross-sectional shape of fiber: circular, fineness: 2.2dtex, fiber length: 51mm) to a card machine, 35% by mass of 2.2dtex, fiber length: 51mm), and then a needle. The fibers were entangled with each other by being applied to a punching machine to prepare a needle punched non-woven fabric 2 (grain: 105 g / m ² , thickness: 1.1 mm).
A total of three laminates were prepared in the same manner as in Example 1 except that the needle punched nonwoven fabric 2 was used instead of the water flow entangled nonwoven fabric and the pressure applied to the laminate during fusing was slightly changed. ..

(Example 8)
Latent crimp fiber of polyester resin (side-by-side type, cross-sectional shape of fiber: circular, fineness: 2.2dtex, fiber length: 51 mm) 55% by mass, single fiber of polyester-based resin (cross-sectional shape of fiber: circular, fineness: After applying 40% by mass of a single fiber of polypropylene resin (cross-sectional shape of fiber: circular, fineness: 2.2dtex, fiber length: 51mm) to a card machine, 40% by mass of 2.2dtex, fiber length: 51mm), and then a needle. The fibers were entangled with each other by being applied to a punching machine to prepare a needle punched non-woven fabric 3 (grain: 105 g / m ² , thickness: 1.1 mm).
A laminate was prepared in the same manner as in Example 1 except that the needle punched nonwoven fabric 3 was used instead of the water flow entangled nonwoven fabric and the pressure applied to the laminate during fusing was slightly changed.

(Examples 9 to 11)
Latent crimp fiber of polyester resin (side-by-side type, cross-sectional shape of fiber: circular, fineness: 2.2dtex, fiber length: 51 mm) 65% by mass, single fiber of polyester-based resin (cross-sectional shape of fiber: circular, fineness: 2.2 dtex, fiber length: 51 mm) 35% by mass was applied to the card machine, and then the fibers were entangled with each other by applying to the needle punch machine. Needle punch non-woven fabric 4 (grain: 105 g / m ² , thickness: 1) .1 mm) was prepared.
A total of three laminates were prepared in the same manner as in Example 1 except that the needle punched nonwoven fabric 4 was used instead of the water flow entangled nonwoven fabric and the pressure applied to the laminate during fusing was slightly changed. ..

The laminate of Examples prepared as described above was one in which at least a part of the peripheral portion of the film and at least a part of the peripheral portion of the non-woven fabric were integrated. Therefore, the laminate of the example was a laminate capable of providing an industrial material having excellent performance.
In particular, in the laminate of the example, when the entire peripheral portion of the film is integrated with the non-woven fabric and / or the entire peripheral portion of the non-woven fabric is integrated with the film, an industrial material having more excellent performance is provided. It was thought that a possible laminate could be prepared.

The physical properties of the laminate of Examples prepared in this manner were evaluated and summarized in Table 1. In addition, (separation performance), (fiber sheet state after separation) and (process passability) were evaluated by subjecting the laminate to the following method.

(Evaluation method of separation performance)
The film part of the laminate was pinched with the thumb and index finger of the left hand, and the fiber sheet portion of the laminate was pinched with the thumb and index finger of the right hand. In that state, the left and right hands were separated from each other in a direction perpendicular to the integrated portion of the laminate until the film and the fiber sheet were separated. Then, the force required to separate the film and the fiber sheet was evaluated.
⊚: The film and the fiber sheet could be easily separated.
〇: Although it was necessary to apply more force than in the case of “◎” mentioned above, the film and the fiber sheet could be separated relatively easily.
Δ: A considerable amount of force had to be applied in order to separate the film and the fiber sheet. That is, it was difficult to separate the film and the fiber sheet as compared with the laminates evaluated as "◎" or "○".

(Evaluation method of fiber sheet state after separation)
The state of the portion of the fiber sheet that had been melt-integrated with the film after being subjected to the above-mentioned (method for evaluating separation performance) and separated was visually confirmed.
〇: The film did not adhere to the portion of the fiber sheet that was melt-integrated with the film.
Δ: The film adhered to the portion of the fiber sheet that was melt-integrated with the film.

(Evaluation method of process passability)
The index finger of the dominant arm touched the main surface of the laminate on the film side, the thumb of the dominant arm touched the main surface of the fiber sheet side of the laminate, and the thumb of the dominant arm and the index finger lightly pinched the integrated part. In that state, by moving the index finger in a direction parallel to the main surface of the laminate, a force was applied to the integrated portion of the laminate.
The force applied to the integrated portion of the laminate was weaker than the force applied to the laminate in the "◎" evaluation of (Evaluation method of separation performance).
〇: The film and the fiber sheet were not separated.
Δ: The film and the fiber sheet were separated.
The laminate whose result of this evaluation is "○" prevents the fiber sheet and the film from being unintentionally separated when a force is applied to the laminate during the manufacturing process of industrial materials or during handling. It means that the laminate can be made, and the laminate whose result of this evaluation is "△" is a fiber sheet unintentionally when a force is applied to the laminate during the manufacturing process of industrial materials or during handling. It means that the film is a laminated body that can be easily separated.

From the result of comparing the laminate of Example 1 and the laminate of Examples 2 to 11, the laminate having a peel strength of less than 29.0 N / 3 cm (preferably 19.5 N / 3 cm or less) is a film and a fiber sheet. It turned out to be a laminate that can be easily separated by hand. Further, from the result of comparing the laminate of Example 2 and the laminate of Examples 3 to 11, the laminate having a peel strength of less than 19.5 N / 3 cm (preferably 14.2 N / 3 cm or less) is more like a film. It turned out to be a laminate in which the fiber sheet can be separated more easily by hand.
Then, from the result of comparing the laminated body of Example 1 and the laminated body of Examples 2 to 11, the laminated body having a peel strength of less than 29.0 N / 3 cm (preferably 19.5 N / 3 cm or less) is after separation. It was found that the laminate was capable of preventing the film from adhering to the fiber sheet.
Therefore, a laminate having a peel strength of less than 29.0 N / 3 cm has made it possible to realize a laminate capable of providing an industrial material having more excellent performance.

Furthermore, from the results of comparing the laminates of Examples 1 to 8 with the laminates of Examples 9 to 11, the laminate having a peel strength greater than 4.2 N / 3 cm (preferably 5.6 N / 3 cm or more) is It has been found that the laminate can prevent the fiber sheet and the film from being unintentionally separated when a force is applied to the laminate during the manufacturing process or handling of industrial materials.

Further, in the laminate of the example, the patch having a functional component between the film and the fiber sheet may significantly reduce the performance of the layer containing the functional component and may contaminate the layer. It was considered to be a patch having a function of being able to reduce the amount.

The laminate of the present invention is used in various industrial applications such as liquid separation membranes such as water treatment membranes and gas separation membranes, ion exchange membranes and dialysis membranes, separators for electrochemical elements, prepregs, gas filters and liquid filters, and liquid absorbents. It can be used as a cushioning material, a sound absorbing material, a mask, a patch, a packaging material, a packing material, a base material for interiors of wallpaper and vehicles, and a clothing material such as a core.

100: Laminated body 11: Film 12: Fiber sheet 13: Peripheral portion of film 14: Peripheral portion of fiber sheet 15: Integrated portion

Claims (4)

A laminate of a film and a fiber sheet, wherein at least a part of the peripheral portion of the film and at least a part of the peripheral portion of the fiber sheet are integrated. The laminate according to claim 1, wherein the entire peripheral edge portion of the film is integrated with the fiber sheet, and / or the entire peripheral edge portion of the fiber sheet is integrated with the film. The laminate according to claim 1 or 2, wherein the peel strength between the film and the fiber sheet at the integrated portion is less than 29.0 N / 3 cm. A patch comprising a functional component between the film and the fiber sheet in the laminate according to any one of claims 1 to 3.

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