Double-sided self-adhesive 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 both moisture-absorbent and elastic. [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 top and one on bottom, is called a double towel and has been put to practical use. Such a double towel is, for example, described as "a double toweling sheet having two fiber sheets, a first sheet and a second sheet, wherein one of the front and back surfaces of the first sheet is a first attached surface and the other surface is a first non-attached surface, and one of the front and back surfaces of the second sheet is a second attached surface and the other surface is a second non-attached surface, 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 surfaces that cannot be detached from each other, and the first non-attached surface and the "(Patent Document 1) and other proposals have been made, including a double toweling sheet, characterized in that 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 attached surface and the second attached surface constitute the outer surfaces of the front and back of the double toweling sheet, and by overlapping the outer surfaces of the front and back of the double toweling sheet and attaching and detaching the first attached surface and the second attached surface, the front and back of the double toweling sheet can be attached and peeled apart. [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, conventional double-layered towels have the problem of being inferior in moisture absorption and elasticity because their main objectives are water retention, water permeability, quick drying, and heat retention.

[0005] Under these circumstances, the present invention aims 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 inventors conducted extensive research and discovered that by forming a moisture-regulating layer and an elastic layer between the detachable first and second sheets, it is possible to achieve both moisture absorption and elasticity, and thus completed 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, A double-sided self-adhesive fabric having 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 formed at least on either side 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 having an impermeable sheet formed on at least one surface of the humidity-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 that is 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 that is detachable from the cut pile. [4] A double-sided self-adhesive fabric in which 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. [Effects of the Invention]

[0008] The double-sided self-adhesive fabric of the present invention can achieve both moisture absorption and elasticity. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a schematic diagram showing the configuration of a double-sided self-adhesive fabric according to one embodiment of the present invention. [Figure 2] FIG. 2 is a diagram showing the surface of a humidity-conditioning layer according to one embodiment of the present invention. [Figure 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. [Figure 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 INVENTION

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

[0013] <First sheet> The first sheet 1 of 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, and polyamide fibers, which can be used alone or in combination of two or more.

[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, and polyamide fibers, which can be used alone or in combination of two or more.

[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 detachable cut pile and loop pile is that it takes advantage of the microfiber cloth's ability to easily attract dust; it is thought that the friction created when the fluffy fiber surface (loop pile) catches on the hard, edgy fiber surface (cut pile) causes them to stick together.

[0021] In the present invention, "self-adhesive" 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, but 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 multiple times and reattached. Note that self-adhesiveness is sometimes also called adhesiveness.

[0022] <Humidity-regulating 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 together. Similarly, the humidity-conditioning layer 3 containing silica gel and polyamide resin and the elastic layer 5 made of polyurethane are directly bonded together. In this way, in this embodiment, the humidity-conditioning layer 3 and the elastic layers 4 and 5 can be directly bonded together without an adhesive layer.

[0023] The humidity-conditioning layer 3 is formed using silica gel and polyamide resin. The polyamide resin here functions as a 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 a dot pattern.

[0025] A mixture of silica gel and polyamide resin in a predetermined 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 a dot pattern to form the humidity-regulating layer 3 (see Figure 2).

[0026] The humidity-conditioning layer 3 has silica gel transferred and fixed in the form of dots, and since there are spaces between the dots, it has excellent breathability.

[0027] 〔silica gel〕 Silica gel has excellent humidity control and moisture absorption properties, so it can maintain humidity at a certain level or higher.

[0028] In addition to moisture, silica gel also has a deodorizing function, absorbing odor-causing substances dispersed in the air, such as ammonia, trimethylamine, hydrogen sulfide, and mercaptan, as well as nonenal gas, which causes body odor associated with aging.

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

[0030] Furthermore, the diameter of the fine through-pores is preferably 30 to 120 angstroms in order to exhibit good moisture absorption function.

[0031] [Polyamide resin] The mixing ratio of silica gel to polyamide resin is not particularly limited, but is preferably 40 to 80% by weight of silica gel: 60 to 20% by weight of polyamide resin, particularly preferably 50 to 70% by weight of silica gel: 50 to 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 effectively functions as a binder for adhering 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 way, in this embodiment, the humidity-conditioning layer 3 and the elastic layers 4 and 5 can be directly bonded to each other without an adhesive layer interposed therebetween.

[0033] In this embodiment, the elastic layers 4 and 5 are formed on the surface of the humidity-conditioning layer 3, so that the silica in the humidity-conditioning layer 3 can be prevented from falling off.

[0034] The polyurethane constituting the elastic layers 4 and 5 is preferably porous foamed polyurethane. Porous foamed polyurethane has excellent breathability and elasticity, which makes it stretchable. In addition, polyurethane has the advantage of being water-absorbent, which increases 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-conditioning layer 3, and between the second sheet 2 and the humidity-conditioning 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] <Making 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.

[0038] The first sheet 1 and elastic layer 4, and the second sheet 2 and elastic layer 5 can be bonded together, for example, as follows: The elastic layer 4 is formed by frame laminating urethane on the surface of the first sheet 1. Specifically, a sheet of urethane foam is processed using a commercially available frame laminating device in a conventional manner to bond the first sheet 1 and elastic layer 4. Similarly, the elastic layer 5 is formed by frame laminating urethane on the surface of the second sheet 2. Specifically, the sheet of urethane foam is processed using a commercially available frame laminating device in a conventional manner to bond the second sheet 2 and elastic layer 5.

[0039] The humidity-conditioning layer 3 and the elastic layers 4 and 5 can be bonded together, for example, as follows. 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, forming the elastic layers 4 and 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 blended, and this is coated (single dot processing) on ​​one side of the elastic layer 4 or 5 (conditions: heat roll temperature: 150 to 250°C, processing speed: 1 to 10 m / min), transferring and fixing the silica gel in dots to form the humidity-conditioning layer 3. Because the polyamide resin is present on the surface of the silica gel transferred in dots, the elastic layers 4 and 5 can be bonded 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 by hand many times and reattached, making it suitable for use, for example, in wrapping (packaging) 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 an elastic layer 3 containing silica gel and polyamide resin is formed 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 Figure 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 Figure 4, 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.

[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 side of the humidity-conditioning 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 structure 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] [Oppressible 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-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> Furthermore, 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 Figure 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 elastic layer 5 sides to clothing (for example, medical clothing such as medical care clothing) by sewing or the like.

[0052] The base materials used for the hook-and-loop fasteners and the like used in the first sheet 1 and the second sheet 2 are often made of hard materials, which can easily damage the skin when used in areas that come into contact with the skin. In this embodiment, the surfaces of the first sheet 1 and the second sheet 2 are protected by elastic layers 4 and 5, making them gentle on the skin of patients with sensitive skin, such as those who are bedridden, and less likely to damage the skin. In addition, by using a large amount of base material such as hook-and-loop fasteners, the deodorizing and moisture-absorbing effects 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 in the following ways, for example. Furthermore, the present invention may be implemented by combining the embodiment and the modified examples, or by combining the modified examples with each other. Furthermore, examples not described in the embodiment or modified examples, or design changes within the scope of the present invention are also included.

[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 can be attached and detached to 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 can be attached and detached to the cut pile of the surface of the second sheet. Also, 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 hook-and-loop fastener that can be attached and detached to the male hook-and-loop fastener of the first sheet. Furthermore, in the present invention, the male and female hook-and-loop fasteners 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 can be attached and detached to the male hook-and-loop fastener of the second sheet.

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

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

[0058] <Elastic layer> In the double-sided self-adhesive fabric of the present invention, an elastic layer made of polyurethane is formed at least between the first sheet and the humidity-regulating layer and between the second sheet and the humidity-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 believed to be effective against oxidation and sulfurization. The reason for this is unclear, but it is thought to be due to the synergistic effects of oils and dirt, such as sebum from fingers, adhering to the microfiber used in the first and second sheets, as well as 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 a first sheet, which is one surface of the double-sided self-adhesive fabric, and the surface of a second sheet, which is the other surface of the double-sided self-adhesive fabric, are detachable from each other, 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, A double-sided self-adhesive fabric having 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 formed at least on either side 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 the surface of a first sheet, which is one surface of the double-sided self-adhesive fabric, and the surface of a second sheet, which is the other surface of the double-sided self-adhesive fabric, are detachable from each other, 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 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 is detachable to the male hook-and-loop fastener, A double-sided self-adhesive fabric having 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 formed at least on either side between the first sheet and the humidity-regulating layer or between the second sheet and the humidity-regulating layer.

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

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