Both-side autohesive fabric

Abstract

To provide a both-side autohesive fabric capable of achieving both hygroscopic property and elasticity.SOLUTION: A both-side autohesive fabric 100 in which a surface 1a of a first sheet 1 and a surface 2a of a second sheet 2 are attachable and detachable includes a humidity control layer 3 containing silica gel and polyamide resin between the first sheet 1 and the second sheet 2, and has elastic layers 4, 5 using polyurethane and formed at least either between the first sheet 1 and the humidity control layer 3 or between the second sheet 2 and the humidity control layer 3.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a double-sided self-adhesive fabric, and more particularly to a double-sided self-adhesive fabric that is capable of achieving both moisture absorption and elasticity. [Background technology]

[0002] Conventionally, fabrics such as towels have been used to protect containers and the like. For example, a toweling sheet made by overlapping two sheets, one on the front and one on the back, is called a double towel and has been put to practical use. Such a double towel is described, for example, in the following document: "A double toweling sheet having two fiber sheets, a first sheet and a second sheet, the first sheet has a first attached surface on one side of the front and back and a first non-attached surface on the other side, the second sheet has a second attached surface on one side of the front and back and a second non-attached surface on the other side, the first attached surface and the second attached surface are detachable attached surfaces, the first non-attached surface and the second non-attached surface are non-detachable surfaces, and the first non-attached surface and the " (Patent Document 1) and others have been proposed, in which the first sheet and the second sheet are overlapped and integrated with each other with the two non-attachable surfaces facing each other, the first attachment surface and the second attachment surface constitute the outer surfaces of the front and back of the double-layered toweling sheet, and the outer surfaces of the front and back of the double-layered toweling sheet are overlapped and the first attachment surface and the second attachment surface are detached, thereby allowing the front and back of the double-layered toweling sheet to be attached and peeled away from each other. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Registered Utility Model No. 3235650 Summary of the Invention [Problem to be solved by the invention]

[0004] However, since conventional double-layered towels are primarily designed to provide water retention, water permeability, quick drying, heat retention, etc., they have problems such as poor moisture absorption and elasticity.

[0005] In view of the above circumstances, an object of the present invention is to provide a double-sided self-adhesive fabric that is both moisture-absorbent and elastic. [Means for solving the problem]

[0006] However, in light of these circumstances, the inventor conducted extensive research and discovered that by forming a moisture-regulating layer and an elastic layer between a first sheet and a second sheet which are removable, it is possible to achieve both moisture absorption and elasticity, thus completing the present invention.

[0007] That is, the present invention has the following aspects. [1] A double-sided self-adhesive fabric in which the surface of the first sheet and the surface of the second sheet are detachable, The double-sided self-adhesive fabric has a humidity-regulating layer between the first sheet and the second sheet, the humidity-regulating layer containing silica gel and polyamide resin, and an elastic layer made of polyurethane is formed at least either between the first sheet and the humidity-regulating layer or between the second sheet and the humidity-regulating layer. [2] A double-sided self-adhesive fabric, in which an impermeable sheet is formed on at least one surface of the moisture-conditioning layer. [3] A double-sided self-adhesive fabric, wherein the surface of the first sheet is cut pile and the surface of the second sheet is loop pile detachable from the cut pile, or the surface of the second sheet is cut pile and the surface of the first sheet is loop pile detachable from the cut pile. [4] A double-sided self-adhesive fabric, wherein the surface of the first sheet is a male hook-and-loop fastener and the surface of the second sheet is a female hook-and-loop fastener that can be attached and detached to the male hook-and-loop fastener, or the surface of the second sheet is a male hook-and-loop fastener and the surface of the first sheet is a female hook-and-loop fastener that can be attached and detached to the male hook-and-loop fastener. Effect of the Invention

[0008] The double-sided self-adhesive fabric of the present invention is capable of achieving both moisture absorption and elasticity. [Brief description of the drawings]

[0009] [Figure 1] FIG. 2 is a schematic diagram showing the configuration of a double-sided self-adhesive fabric according to one embodiment of the present invention. [Diagram 2] FIG. 2 is a diagram showing the surface of a humidity-conditioning layer according to one embodiment of the present invention. [Diagram 3] FIG. 2 is a schematic diagram showing the configuration of a double-sided self-adhesive fabric according to another embodiment of the present invention. [Figure 4] FIG. 2 is a schematic diagram showing the configuration of a double-sided self-adhesive fabric according to another embodiment of the present invention. [Diagram 5] FIG. 2 is a schematic diagram showing the configuration of a double-sided self-adhesive fabric according to another embodiment of the present invention. [Figure 6] FIG. 2 is a schematic diagram showing the configuration of a double-sided self-adhesive fabric according to another embodiment of the present invention. [Figure 7] FIG. 2 is a schematic diagram showing the configuration of a double-sided self-adhesive fabric according to another embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] <First embodiment> Hereinafter, a double-sided self-adhesive fabric according to one aspect of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the following embodiment.

[0011] FIG. 1 is a schematic diagram showing the configuration of a double-sided self-adhesive fabric according to one embodiment of the present invention.

[0012] The overall configuration of the double-sided self-adhesive fabric of this embodiment will be described mainly with reference to FIG. As shown in FIG. 1, the double-sided self-adhesive fabric 100 of this embodiment has a structure in which a moisture-regulating layer 3 containing silica gel and polyamide resin is provided between a first sheet 1 and a second sheet 2, an elastic layer 4 made of polyurethane is formed between the first sheet 1 and the moisture-regulating layer 3, and an elastic layer 5 made of polyurethane is formed between the second sheet 2 and the moisture-regulating layer 3.

[0013] <First sheet> The first sheet 1 in this embodiment is not particularly limited as long as the surface 1a of the first sheet 1 and the surface 2a of the second sheet 2 are detachable, but here we will explain the case where the surface 1a of the first sheet 1 is cut pile.

[0014] [Cut pile] The material of the cut pile is not particularly limited, and examples thereof include commonly used polyester fibers such as polyethylene terephthalate, polyethylene naphthalate, polytrimethylene terephthalate, polybutylene terephthalate, etc., polyamide fibers, etc. These may be used alone or in combination of two or more kinds.

[0015] The cut pile in this embodiment is preferably made of microfiber.

[0016] Microfibers are usually extremely fine synthetic fibers (fibers about 1 / 100 the thickness of a human hair) made from materials such as nylon or polyester.

[0017] <Second sheet> There are no particular limitations on the second sheet 2 as long as the surface 1a of the first sheet 1 and the surface 2a of the second sheet 2 are detachable, but here we will explain the case where the surface 2a of the second sheet 2 is a loop pile that is detachable from the cut pile of the surface 1a of the first sheet 1.

[0018] [Loop pile] The material of the loop pile is not particularly limited, and examples thereof include commonly used polyester fibers such as polyethylene terephthalate, polyethylene naphthalate, polytrimethylene terephthalate, polybutylene terephthalate, etc., polyamide fibers, etc. These may be used alone or in combination of two or more kinds.

[0019] The loop pile in this embodiment is preferably made of so-called nanofibers, which have a smaller diameter than microfibers, and may contain both microfibers and nanofibers.

[0020] The principle behind the cut pile and loop pile being detachable is that it takes advantage of the property of microfiber cloth that it easily attracts dust; it is thought that the friction created when the fluffy fiber surface (loop pile) gets caught on the hard fiber surface with sharp edges (cut pile) causes them to stick together.

[0021] In the present invention, "self-adhesiveness" refers to the property that when lightly pressed (pressurized) with a finger or the like, only the surfaces 1a and 2a of the sheets 1 and 2 adhere to each other, and do not adhere to parts other than the surfaces 1a and 2a of the sheets 1 and 2 or to other substances, and can be peeled off by hand many times and reattached. Note that self-adhesiveness may also be called adhesiveness.

[0022] <Humidity Control Layer> In this embodiment, the humidity conditioning layer 3 containing silica gel and polyamide resin and the elastic layer 4 made of polyurethane are directly bonded to each other. Similarly, the humidity conditioning layer 3 containing silica gel and polyamide resin and the elastic layer 5 made of polyurethane are directly bonded to each other. In this way, in this embodiment, the humidity conditioning layer 3 and the elastic layers 4 and 5 can be directly bonded to each other without the need for an adhesive layer.

[0023] The humidity control layer 3 is formed using silica gel and polyamide resin. The polyamide resin here functions as a so-called binder for adhering the silica gel to the elastic layers 4 and 5.

[0024] 2 is a diagram showing the surface of the humidity conditioning layer 3 formed on the surfaces of the elastic layers 4 and 5. In the figure, white dots represent silica gel transferred and fixed in the form of dots.

[0025] A mixture of silica gel and polyamide resin in a specified ratio is coated (single dot processing) on ​​one side of the elastic layers 4 and 5, whereby the silica gel is transferred and fixed in dots to form the humidity control layer 3 (see Figure 2).

[0026] The moisture-conditioning layer 3 has silica gel transferred and fixed in a dot pattern, and since there are spaces between the dots, it has excellent breathability.

[0027] 〔silica gel〕 Silica gel has excellent moisture regulating and absorbing properties, so it can maintain humidity at a constant level.

[0028] In addition to moisture, silica gel also has a deodorizing function that adsorbs ammonia, trimethylamine, hydrogen sulfide, mercaptan, and nonenal gas, which is the cause of aging odor, that are dispersed into the air.

[0029] The silica gel particles preferably have a large number of fine through-holes, and have the function of absorbing moisture in the air by surface adsorption or capillary phenomenon in a high humidity atmosphere, and releasing the absorbed moisture in a dry atmosphere. Therefore, in order to improve the moisture absorption and release functions, the silica gel in this embodiment has a microspace volume of 0.5 to 1.0 ml / g and a surface area of ​​350 to 650 m. 2 / g range is preferred.

[0030] Moreover, the diameter of the fine through-holes is preferably 30 to 120 angstroms in order to satisfactorily exhibit the moisture absorbing function.

[0031] [Polyamide resin] The mixing ratio of silica gel to polyamide resin is not particularly limited, but is preferably 40-80% by weight of silica gel: 60-20% by weight of polyamide resin, particularly preferably 50-70% by weight of silica gel: 50-30% by weight of polyamide resin, and most preferably 60% by weight of silica gel: 40% by weight of polyamide resin. This is because, within such a range, the polyamide resin plays a good role as a binder for bonding the silica gel to the elastic layers 4 and 5.

[0032] <Elastic layer> In this embodiment, the elastic layers 4 and 5 are directly bonded to one side of the humidity conditioning layer 3. In this manner, in this embodiment, the humidity conditioning layer 3 and the elastic layers 4 and 5 can be directly bonded to each other without the need for an adhesive layer.

[0033] In this embodiment, since the elastic layers 4 and 5 are formed on the surface of the humidity conditioning layer 3, it is possible to prevent the silica in the humidity conditioning layer 3 from falling off.

[0034] The polyurethane constituting the elastic layers 4 and 5 is preferably a porous polyurethane foam. Porous polyurethane foam has excellent breathability and elasticity, so it also has excellent stretchability. In addition, polyurethane has water absorption properties, so it has the advantage of increasing the amount of moisture retained.

[0035] The thickness of the elastic layers 4 and 5 is usually 1 to 10 mm, preferably 1 to 5 mm, and particularly preferably 1.5 to 3.5 mm.

[0036] In this embodiment, elastic layers 4, 5 made of polyurethane are interposed between the first sheet 1 and the humidity-regulating layer 3, and between the second sheet 2 and the humidity-regulating layer 3. Because polyurethane is porous and has excellent elasticity, the adsorption properties are improved compared to when the first sheet 1 and the second sheet 2 are simply adsorbed together.

[0037] <Preparation of double-sided self-adhesive fabric> An example of the production of the double-sided self-adhesive fabric 100 of this embodiment will be shown, but the order of production etc. is not limited to this example.

[0038] The first sheet 1 and the elastic layer 4, and the second sheet 2 and the elastic layer 5 can be bonded, for example, as follows. The surface of the first sheet 1 is frame-laminated with urethane to form the elastic layer 4. Specifically, a sheet-shaped urethane foam is processed by a normal method using a commercially available frame laminating device to bond the first sheet 1 and the elastic layer 4. Similarly, the surface of the second sheet 2 is frame-laminated with urethane to form the elastic layer 5. Specifically, the sheet-shaped urethane foam is processed by a normal method using a commercially available frame laminating device to bond the second sheet 2 and the elastic layer 5.

[0039] The adhesion between the humidity-conditioning layer 3 and the elastic layers 4 and 5 can be performed, for example, as follows. That is, first, a mixture of silica gel and polyamide resin in a predetermined ratio is transferred and fixed to one side of the elastic layer 4 or 5 to form the elastic layer 4 and the elastic layer 5 on both sides of the humidity-conditioning layer 3. Specifically, 60% by weight of silica gel and 40% by weight of polyamide resin are mixed, and this is coated (single dot processing) (conditions: heat roll temperature: 150 to 250°C, processing speed: 1 to 10 m / min) on one side of the elastic layer 4 or 5 to transfer and fix the silica gel in a dot shape to form the humidity-conditioning layer 3. Since the polyamide resin is present on the surface of the silica gel transferred in a dot shape, the elastic layer 4 and the elastic layer 5 can be adhered to both sides of the humidity-conditioning layer 3 without using a binder.

[0040] The double-sided self-adhesive fabric 100 of the present invention is detachable, allowing the surface 1a of the first sheet and the surface 2a of the second sheet to be attached and detached from each other, and can be peeled off and reattached by hand multiple times, making it suitable for use, for example, in wrapping precision instruments (cameras, lenses, etc.).

[0041] <Second embodiment> As shown in Fig. 1, the double-sided self-adhesive fabric 100 according to the first embodiment has a structure in which an elastic layer 4 made of polyurethane is formed between the first sheet 1 and the humidity-conditioning layer 3, and an elastic layer 5 made of polyurethane is formed between the second sheet 2 and the humidity-conditioning layer 3, but it is also possible to have only one of the elastic layer 4 and the elastic layer 5. That is, as shown in Fig. 3, the double-sided self-adhesive fabric 200 according to the second embodiment has a structure in which a humidity-conditioning layer 3 containing silica gel and polyamide resin is provided between the first sheet 1 and the second sheet 2, and an elastic layer 4 made of polyurethane is formed between the first sheet 1 and the humidity-conditioning layer 3.

[0042] Other than the elastic layer, the configuration is the same as that of the double-sided self-adhesive fabric 100 according to the first embodiment, and therefore a description thereof will be omitted.

[0043] <Third embodiment> As shown in Fig. 1, the double-sided self-adhesive fabric 100 according to the first embodiment has a structure in which an elastic layer 4 made of polyurethane is formed between the first sheet 1 and the humidity-conditioning layer 3, and an elastic layer 5 made of polyurethane is formed between the second sheet 2 and the humidity-conditioning layer 3, but it is also possible to have only one of the elastic layer 4 and the elastic layer 5. That is, the double-sided self-adhesive fabric 300 according to the third embodiment has a structure in which a humidity-conditioning layer 3 containing silica gel and polyamide resin is formed between the first sheet 1 and the second sheet 2, and an elastic layer 5 made of polyurethane is formed between the second sheet 2 and the humidity-conditioning layer 3, as shown in Fig. 4.

[0044] Other than the elastic layer, the configuration is the same as that of the double-sided self-adhesive fabric 100 according to the first embodiment, and therefore a description thereof will be omitted.

[0045] <Fourth embodiment> In the double-sided self-adhesive fabric according to this embodiment, an impermeable sheet may be formed on at least one surface of the moisture-regulating layer 3 .

[0046] 5, the double-sided self-adhesive fabric 400 according to the fourth embodiment has impermeable sheets 6, 7 formed on both sides of the humidity-conditioning layer 3. That is, the double-sided self-adhesive fabric 400 according to the fourth embodiment has the same configuration as the double-sided self-adhesive fabric 100 according to the first embodiment, except that the impermeable sheet 6 is formed between the humidity-conditioning layer 3 and the elastic layer 4, and the impermeable sheet 7 is also formed between the humidity-conditioning layer 3 and the elastic layer 5.

[0047] Other than the impermeable sheet, the configuration is the same as that of the double-sided self-adhesive fabric 100 according to the first embodiment, and therefore a description thereof will be omitted.

[0048] [Opacity sheet] The impermeable sheet in this embodiment is not particularly limited as long as it is made of a material that is difficult for moisture to pass through, and examples thereof include plastic film, aluminum foil (=aluminum foil), aluminum-deposited film in which aluminum is deposited on the surface of a plastic film, etc. These may be used alone or in combination of two or more kinds.

[0049] <Fifth embodiment> In addition, the double-sided self-adhesive fabric according to this embodiment may have an impermeable sheet formed on only one side of the humidity-conditioning layer 3. That is, the double-sided self-adhesive fabric 500 according to the fifth embodiment has the same configuration as the double-sided self-adhesive fabric 400 according to the fourth embodiment, except that, as shown in FIG. 6, the impermeable sheet 6 is formed between the humidity-conditioning layer 3 and the elastic layer 4, and the impermeable sheet 7 is not formed between the humidity-conditioning layer 3 and the elastic layer 5.

[0050] Sixth embodiment As shown in FIG. 7, this embodiment is a double-sided self-adhesive fabric structure 600 in which the surface 1a of the first sheet 1 and the surface 2a of the second sheet 2 are detachable, and an elastic layer 4 made of polyurethane is formed on the back surface of the first sheet, with a humidity-regulating layer 3 containing silica gel and polyamide resin interposed therebetween, and an elastic layer 5 made of polyurethane is formed on the back surface of the second sheet 2, with a humidity-regulating layer 3 containing silica gel and polyamide resin interposed therebetween.

[0051] The double-sided self-adhesive fabric structure 600 of this embodiment is used by attaching the elastic layer 4 and the elastic layer 5 sides to clothing (for example, medical clothing such as medical care clothing) by sewing or the like.

[0052] The base material such as hook-and-loop fasteners used in the first sheet 1 and the second sheet 2 is often made of a hard material, and therefore, if used in a location that comes into contact with the skin, the skin is easily damaged. In this embodiment, the surfaces of the first sheet 1 and the second sheet 2 are protected by the elastic layers 4 and 5, so that the skin of patients who have weak skin and are bedridden or the like is gentle on the skin and is less likely to be damaged. In addition, by using a large amount of the base material such as hook-and-loop fasteners, the deodorizing effect and moisture absorption effect of silica gel can be achieved.

[0053] Other than the elastic layer, the configuration is the same as that of the double-sided self-adhesive fabric 100 according to the first embodiment, and therefore a description thereof will be omitted.

[0054] <Modification> Although the double-sided self-adhesive fabric according to one embodiment has been described above, the present invention is not limited to this embodiment, and may be modified as follows. The embodiment may be combined with the modified embodiment, or the modified embodiments may be combined with each other. Examples not described in the embodiment or modified embodiment, and design changes within the scope of the gist of the present invention are also included in the present invention.

[0055] <First sheet, second sheet> In the first embodiment, the surface 1a of the first sheet 1 is cut pile, and the surface 2a of the second sheet 2 is loop pile that is detachable from the cut pile of the surface 1a of the first sheet 1, but the present invention is not limited to this. For example, in the first embodiment, the cut pile and loop pile may be reversed, and the surface of the second sheet may be cut pile, and the surface of the first sheet may be loop pile that is detachable from the cut pile of the surface of the second sheet. In addition, in the present invention, the surface of the first sheet may be a male hook-and-loop fastener, and the surface of the second sheet may be a female loop pile hook-and-loop fastener that is detachable from the male hook-and-loop fastener of the surface of the first sheet. Furthermore, in the present invention, the male hook-and-loop fastener and the female hook-and-loop fastener may be reversed, and the surface of the second sheet may be a male hook-and-loop fastener, and the surface of the first sheet may be a female hook-and-loop fastener that is detachable from the male hook-and-loop fastener of the surface of the second sheet.

[0056] The hook side (the prickly, hard side) of the hook-and-loop fastener (side A, convex side) is considered "male" and the loop side (the fluffy, soft side) of the hook-and-loop fastener (side B, concave side) is considered "female."

[0057] <Humidity Control Layer> In the double-sided self-adhesive fabric of the present invention, a moisture-regulating layer containing silica gel and polyamide resin is formed between the first sheet and the second sheet, but the moisture-regulating layer may also be a layer in which numerous granular silica gel are sandwiched between two base sheets (such as nonwoven fabrics).

[0058] <Elastic layer> In the double-sided self-adhesive fabric of the present invention, an elastic layer made of polyurethane is formed at least either between the first sheet and the moisture-regulating layer or between the second sheet and the moisture-regulating layer, but the elastic layer may be omitted if necessary.

[0059] <Other Effects> The double-sided self-adhesive fabric according to the embodiment is also effective against oxidation and sulfurization. The reason for this is unclear, but it is thought to be due to the synergistic effect of oil and dirt such as sebum from fingers that adheres to the microfiber used in the first and second sheets, humidity, and ultraviolet rays. [Industrial Applicability]

[0060] The double-sided self-adhesive fabric of the present invention is capable of achieving both moisture absorption and elasticity, and therefore can be used for wrapping (packaging) precision instruments (cameras, lenses, etc.). [Explanation of symbols]

[0061] 100 Double-sided self-adhesive fabric 1. First sheet 1a Surface of the first sheet 2. Second sheet 2a Surface of the second sheet 3. Humidity Control Layer 4 Elastic layer 5 Elastic layer

Claims

1. A double-sided self-adhesive fabric in which the surface of the first sheet and the surface of the second sheet are detachable, The double-sided self-adhesive fabric has a humidity-regulating layer containing silica gel and polyamide resin between the first sheet and the second sheet, and an elastic layer made of polyurethane is formed at least either between the first sheet and the humidity-regulating layer or between the second sheet and the humidity-regulating layer.

2. The double-sided self-adhesive fabric according to claim 1 , wherein an impermeable sheet is formed on at least one surface of the moisture-regulating layer.

3. The surface of the first sheet is cut pile and the surface of the second sheet is loop pile detachable from the cut pile, or the surface of the second sheet is cut pile and the surface of the first sheet is loop pile detachable from the cut pile. The double-sided self-adhesive fabric according to claim 1 or 2.

4. The surface of the first sheet is a male hook-and-loop fastener, and the surface of the second sheet is a female hook-and-loop fastener that is detachable from the male hook-and-loop fastener, or the surface of the second sheet is a male hook-and-loop fastener, and the surface of the first sheet is a female hook-and-loop fastener that is detachable from the male hook-and-loop fastener. The double-sided self-adhesive fabric according to claim 1 or 2.

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