JP2013248182A - Water-repellent patch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a patch which has air permeability, high water repellency and excellent self-back adhesion, which has also adhesion strength and causes little skin irritation and which is suited for the use of a taping tape or the like.SOLUTION: A patch includes a support which comprises cloth of a woven fabric or a knitted fabric processed with a fluoroplastic water repellent, and an adhesive layer which is adjacent to the support and formed on at least one of both sides of the support and which covers the whole surface of the side. The patch has air permeability and also water repellency of the fifth degree by a spray method and the ninth degree or above by an IPA method. This patch, a manufacturing method thereof, a water-repellent roll-shaped patch and also a taping tape are provided.

Description

  The present invention relates to a patch having air permeability, high water repellency and good self-back adhesion, and particularly to a patch having high water repellency used for taping tape.

  Adhesives with adhesive tape and other supports and adhesive layers use adhesive strength to apply adhesive bandages, transdermal absorption adhesives, surgical adhesive tapes such as surgical dressings and surgical drapes, or therapeutic adhesive tapes, etc. Applications are being developed as medical adhesive products. In addition, taping tape is known as a medical or sports patch made for the purpose of fixing soft tissue such as joints, muscles, ligaments or tendons.

  Taping tape has conventionally been mostly made of cotton, so once it gets wet by water that has entered from the outside, it dries slowly and is uncomfortable, and it contains moisture and becomes heavy. The feeling of use may be impaired.

  A taping tape that has been subjected to a water repellent treatment with a water repellent is known. Patent Document 1 discloses an emergency bandage, an adhesive tape, or a sheet in which an adhesive layer is laminated on one surface of a substrate formed of fibers subjected to water repellent treatment with a water repellent treatment agent. Silicone resin, fluororesin, aluminum or zirconium-containing paraffin, ethylene urea, N-methylol fatty acid amide and the like are disclosed as water treatment agents. Patent Document 2 discloses a fluorine water repellent, a silicone water repellent, a wax water repellent, a zirconium water repellent, an ethylene urea water repellent, a methylolamide water repellent, and a pyridinium salt repellent. A breathable pressure-sensitive adhesive tape such as a kinesiology tape in which a base material is water-repellent processed with a liquid agent, preferably paraffin wax, is disclosed.

  However, a conventional adhesive material such as a taping tape subjected to a water repellent treatment is not always at a level where water repellency is good. Moreover, many of the conventionally used water repellents also function as release agents. Therefore, if the amount of the water repellent used in the water repellent treatment is increased, the water repellency of the support is increased, but the adhesiveness between the adhesive materials (adhesiveness to the back surface) is lowered, and an adhesive layer is formed. In some cases, the anchoring properties such as penetration of the adhesive into the support, entanglement, and the degree of adhesion have deteriorated.

  In order to have high water repellency and to improve the self-back surface adhesiveness and the anchoring property of the adhesive to the support, it is necessary to increase the adhesive strength of the adhesive or only on one side of the support. A method of performing a water repellent treatment is conceivable. However, if the adhesive has a strong adhesive strength, the adhesion to the finger will increase, resulting in poor handling, and more pain when peeling from the skin or peeling of the skin. There was a problem. In addition, when the water repellent treatment is performed only on one surface of the support, there is a problem that water enters from the surface or side surface of the support that is not subjected to the water repellent treatment, thereby impairing the water repellency.

  In addition, the patch material such as a taping tape is required to be a breathable patch material so that the patch site does not get steamed when exercising. However, when both the support and the pressure-sensitive adhesive layer are breathable, water can be easily sucked from the outside, and water repellency may be impaired.

  Therefore, a patch suitable for use in a taping tape or the like, which is breathable, has high water repellency, and has good self-back adhesion, has been desired for a patch used in a taping tape or the like.

Japanese Utility Model Publication No. 2-13462 JP 2008-38021 A

  An object of the present invention is to provide a patch suitable for use in a taping tape or the like that is breathable, has high water repellency, and has good adhesion to the back surface, in a patch used for a taping tape or the like. is there.

  As a result of diligent research on solving the above-mentioned problems, the present inventor adopted a woven or knitted fabric treated with a fluororesin-based water repellent as a support, adjacent to the support, The above-mentioned problem is solved by forming a pressure-sensitive adhesive formed on at least one surface of both surfaces and forming a pressure-sensitive adhesive layer covering the entire surface of the water-repellent paste, preferably a foam-treated water-repellent patch. We have found out what we can do and have completed the present invention.

  That is, according to the present invention, a support made of a woven or knitted fabric treated with a fluororesin-based water repellent, and adjacent to the support, formed on at least one surface of the support, An adhesive material having air permeability, comprising an adhesive layer covering the entire surface, characterized in that the water repellency by the spray method is grade 5 and the water repellency by the IPA method is grade 9 or higher. A water-repellent patch is provided.

Moreover, according to this invention, the water-repellent adhesive material of the following (1)-(6) is provided as an embodiment.
(1) The water-repellent patch as described above, wherein the pressure-sensitive adhesive forming the pressure-sensitive adhesive layer is an acrylic pressure-sensitive adhesive.
(2) The water-repellent patch comprising the pressure-sensitive adhesive layer obtained by foaming.
(3) The above-mentioned water-repellent patch obtained by treating the support with a solution of a fluororesin water repellent prepared to a treatment concentration of 4 to 12% by mass.
(4) The water-repellent patch, wherein the amount of the fluororesin contained in the support made of a fabric is 0.5 to 4.5 g / m ² .
(5) The above-mentioned water-repellent patch obtained by treating a support with a fluororesin-based water repellent solution by a pad nip method.
(6) The water-repellent patch as described above, wherein the air permeability measured by a Gurley densometer in accordance with JIS P8117 is less than 10 seconds / 100 mL.

  Furthermore, according to the present invention, the water repellency includes a step of obtaining a support by treating a woven or knitted fabric with a fluororesin water repellent and a step of imparting air permeability to the pressure-sensitive adhesive layer. A method for producing the patch is provided.

  Further, according to the present invention, there is provided a water-repellent roll patch formed from the water-repellent patch, and as an embodiment thereof, a water-repellent roll patch having no release paper, and A water-repellent roll-like patch for taping tape is provided.

  Furthermore, according to the present invention, there is provided a taping tape formed from the water-repellent patch or the water-repellent roll-shaped patch.

  According to the present invention, a support made of a woven or knitted fabric treated with a fluororesin-based water repellent, and adjacent to the support and formed on at least one surface of the support, the surface A breathable adhesive material comprising an adhesive layer covering the entire surface of the film, wherein the water repellency by the spray method is grade 5 and the water repellency by the IPA method is grade 9 or higher. Providing adhesives suitable for taping tapes, etc. that are breathable, have high water repellency, and have good self-back surface adhesive properties, because they are water-based adhesives. The effect that it is done.

  The water-repellent patch of the present invention is formed on a support made of a woven fabric or a knitted fabric treated with a fluororesin-based water repellent, and on at least one side of the support adjacent to the support. A breathable patch material comprising an adhesive layer covering the entire surface, wherein the water repellency by the spray method is grade 5 and the water repellency by the IPA method is grade 9 or higher. It is a water-repellent patch.

1. Support The water-repellent patch of the present invention is a support made of a woven or knitted fabric treated with a fluororesin-based water repellent.

(1) Fabric The fabric that can be used as the support in the water-repellent patch of the present invention is a woven fabric or a knitted fabric, and is preferably a woven fabric from the viewpoint of providing a balanced water repellency and air permeability. It is cloth. In general, plastic films, fabrics (woven fabrics, knitted fabrics, non-woven fabrics, etc.), paper, foams, or multilayer sheets obtained by combining these have been used as the support for the patch. As the adhesive material suitable for taping tape, etc., the adhesive material often wraps around the hand or foot, so it has flexibility, stretchability, hand tearability, self-back adhesive properties, etc. A support having the following is preferably used. In the present invention, a woven fabric or a knitted fabric is used, and a woven fabric is particularly preferably used. Here, “hand cutting” refers to the ability to easily cut the patch in the longitudinal direction or the short direction by hand. “Self-back adhesiveness” is also referred to as “overlap adhesiveness” and refers to the ability to adhere to the self-back surface of the patch. For example, the adhesive material may be overlaid when the adhesive material is wrapped around the arm or foot or when the movement of the elbow or knee is supported or restricted. At this time, if the adhesive back surface of the adhesive material is low, peeling tends to occur. Therefore, in the case of taping tape or the like, it is one of the important performances that the adhesive material of the adhesive material has good adhesiveness on the back surface. ing.

  The material of the woven or knitted fabric is not particularly limited, and cellulose-based fibers such as cotton and rayon; synthetic fibers such as polyester-based, polyamide-based, acrylic-based, polyurethane-based, polyethylene-based, and polypropylene-based fibers are used. These materials can also be used alone or in combination. Furthermore, elastic fibers, non-elastic fibers, or a combination thereof can be used.

  From the viewpoints of flexibility, stretchability, hand cutting, self-back adhesion, and breathability, the woven fabric or knitted fabric is preferably a composite yarn of cellulosic fibers and elastic fibers in part or all of the warp. And a woven fabric in which warp yarns are alternately arranged with S-strand strong twist yarns of cellulose-based fiber yarns one by one. Cellulosic fibers include cotton, viscose rayon, polynosic fibers, and the like. The composite yarn of cellulosic fiber and elastic fiber is a twisted yarn, covered yarn, core-spun yarn, etc. of cellulosic fiber and elastic fiber (for example, polyether polyurethane fiber, polyester polyurethane fiber, synthetic rubber fiber) Among these, a core-spun yarn of cellulose-based fiber and polyether-based polyurethane fiber (a yarn obtained by winding a cotton yarn around a polyurethane fiber, sometimes referred to as “CSY”) is preferable, but is not limited thereto. It is not a thing. The mixed ratio of cellulosic fibers and elastic fibers is preferably from 85 to 98 mass%, more preferably from 90 to 96 mass%, based on cellulose fibers.

  The weft of the woven fabric may be any yarn of so-called synthetic fibers such as polyester fibers, polyamide fibers and acrylic fibers; cellulose fibers such as cotton and rayon; For example, in the case of a woven fabric using core-spun yarns, 8-60th corespun yarns are arranged at a density of 16-48 yarns / inch for warp yarns, and 40-30 cotton yarns for weft yarns are 40-40. Those arranged at a density of 80 / inch can be used. For taping tape applications, the fabric is preferably unidirectionally stretchable rather than bidirectionally stretchable in order to improve the fixability of the arms and legs.

  When the fabric is stretched by hand in the longitudinal direction, the fabric preferably stretches by 50 to 150% and more preferably stretches by 60 to 120%. When the fabric is a knitted fabric, this characteristic can be satisfied by using a warp knitted fabric. “Elongation stretch” means that when the patch is pulled strongly in the longitudinal direction by hand, the stretch of the patch reaches the limit and cannot be stretched any further. The length is defined as 100% and the length of the patch when the extension reaches the limit. For example, if the “elongation stretch” is 100%, it indicates that the length of the patch before stretching is doubled and reaches the limit.

In order that a patch comprising a support made of a woven or knitted fabric treated with a fluororesin-based water repellent (hereinafter simply referred to as “fabric”) has high water repellency, the fabric It is preferable that the opening formed between the yarns is not recognized when watermarked with light, but if the area of the opening is about 0.3 mm ² or less, the water repellency is not affected. .

  The thickness of the fabric is not particularly limited, but is preferably in the range of 100 μm to 10 mm, more preferably 500 μm to 7 mm, and still more preferably 1 to 5 mm from the viewpoints of flexibility, stretchability, hand cutting properties, and the like. In particular, in the adhesive material for taping tape, the thing of the range of 2-4 mm can be used most preferably. The thickness of the fabric can be adjusted by the thickness of the yarn and the number of driven-in yarns.

  The edge portion of the fabric may be processed so that the yarn does not fray. Further, the edge portion may be made thinner than the center portion of the fabric by heating or pressing, or processing such as lock stitching may be performed.

(2) Treatment of fabric with fluororesin-based water repellent agent Conventionally, silicone resin, fluororesin, paraffin resin, etc. are known as water-repellent treatment agents used to obtain a support by subjecting fabric to water-repellency treatment. ing. In the present invention, the water repellent treatment is performed on the fabric with the fluororesin water repellent. That is, the water-repellent agent such as a silicone resin that has been widely used conventionally is known as a release agent, and when the treatment concentration of the water-repellent agent is increased to impart waterproofness to the fabric, It was found that the anchoring property of the pressure-sensitive adhesive deteriorates and the self-back surface adhesiveness tends to decrease. On the other hand, when the fluororesin water repellent is used as a water repellent treatment agent for the fabric, the water repellent treatment for the fabric is treated with a high treatment concentration fluororesin water repellent agent so as to have a waterproof function. However, it has been found that the self-back adhesiveness is good, and the remarkable effect of being excellent in the anchoring property of the adhesive to the support is exhibited. Further, as will be described in detail later, in order to obtain an adhesive material having air permeability such as an adhesive material provided with an adhesive layer obtained by foaming, an adhesive material including a step of imparting air permeability to the adhesive agent Also in the manufacturing method, it has been found that a remarkable effect of good water repellency is achieved.

  Further, when a patch comprising a support made of a fabric treated with the fluororesin-based water repellent of the present invention is wound around an arm or the like, if the part where the patch is overlaid on its own patch is pressed lightly with a finger, It has also been found that the remarkable effect of further improving the overlayability is achieved. Furthermore, in the roll-shaped patch formed by winding the patch of the present invention in a roll shape so as to adhere to the back surface, the fluororesin-based water repellent on the support surface functions as a release agent. It has been found that the peeling force is reduced, and a remarkable effect is obtained that the unraveling of the patch from the state wound up in a roll shape is good. When a fabric is treated with a fluororesin-based water repellent, the detailed mechanism that exerts a remarkable effect compared to other water-repellent agents such as a silicone resin is unknown, but the breathability such as foaming treatment is not known. In addition to the physical mechanism, such as the pressure-sensitive adhesive entering the uneven parts of the support and the gaps between the fibers in the application step, the physicochemical structure of the fluororesin water repellent itself is different from that of other water repellent treatment agents. It is surmised that it may be due to its speciality.

  As fluororesin-based water repellent used for water repellent treatment of fabrics, PFOA (C8: perfluorooctanoic acid), which has been promoted in various countries due to concerns about bioaccumulation, has been reduced as much as possible. (5 ppm or less) It is preferable to use a C6 fluororesin water repellent, for example, Asahi Guard (registered trademark) AG-E082 manufactured by Asahi Glass Co., Ltd. or NK Guard (registered trademark) manufactured by Nikka Chemical Co., Ltd. S-02 etc. are mentioned as a commercial item.

The fluororesin-based water repellent used for treating the fabric is usually used in the form of a fluororesin-based water repellent solution diluted with a solvent, and preferably has a treatment concentration (that is, a fluororesin). Concentration of fluororesin water repellent in the water repellent solution) 4 to 12% by mass (for example, when the solid content in the fluororesin water repellent is 20% by mass, The solid content in the solution is 0.8 to 2.4% by mass.), More preferably 4.2 to 11% by mass, and still more preferably 4.4 to 10.5% by mass. The fluororesin-based water repellent solution is used, for example, in a state diluted to a dilution factor of 8.3 to 25 times with a solvent such as water or water-alcohol, preferably in an aqueous solution diluted with purified water. . If the treatment concentration (and the fluororesin concentration in the fluororesin water repellent solution) is too low, the water repellency of the support and the patch may be insufficient. When the treatment concentration is too high, the water repellency of the support and the patch is good, but the self-back surface adhesiveness tends to decrease. For example, when a fluororesin water repellent solution is prepared such that the treatment concentration of the fluororesin water repellent is 50% by mass, the adhesive strength of the back surface of the patch is compared with that when the treatment concentration is 10% by mass. It was found that it dropped to about half or less. In addition, in order to obtain a patch having a water repellency of 5 grades by the spray method and a water repellency of 9 grades or more by the IPA method, it is contained in a support made of a fabric by the treatment as described above. fluororesin amount, may preferably 0.5~4.5g / ^{m 2,} more preferably 0.8~4.3g / ^{m 2,} more preferably made to be 1~4.1g / ^{m 2.} The amount of fluororesin contained in the support can be calculated from the mass of the fabric before and after treatment. In addition, a change is not seen by the unevenness | corrugation of a fabric by performing a water-repellent process using a fluororesin type water repellent.

  The water repellent treatment of the fabric is preferably performed by a pad nip method in which the fabric is immersed in a fluororesin water repellent solution. Specifically, the cloth was immersed in a fluororesin water repellent solution, preferably an aqueous solution, at a temperature of 4 to 30 ° C., preferably 5 to 25 ° C., more preferably at room temperature, for an appropriate time. Thereafter, excess liquid is squeezed out and dried at a temperature of 150 ° C. or higher, preferably 150 to 200 ° C., to obtain a support made of a fabric that has been subjected to a water repellent treatment with a fluororesin water repellent. it can.

(3) Other treatments, etc. For the support of the patch of the present invention, additives that are usually used, for example, an ultraviolet absorber, an antibacterial agent, an anti-aging agent, a filler, a pigment, a fragrance, Colorants, flame retardants, antistatic agents (anionic surfactants, cationic surfactants, nonionic surfactants) and the like can be included. These additives may be added to the fibers forming the fabric, or may be added or applied when the surface treatment of the fabric is performed. Depending on the type of the additive, the air permeability of the patch is not impaired. And used in normal amounts. Further, the support of the patch of the present invention may be impregnated with a synthetic resin having affinity or adhesion to the fabric. Examples of the synthetic resin include acrylic resins.

2. Adhesive Layer The patch of the present invention is a breathable patch comprising a support made of a fabric treated with a fluororesin-based water repellent and an adhesive layer.

(1) Adhesive The adhesive forming the adhesive layer is not particularly limited as long as it has low skin irritation, and is acrylic, urethane, silicone, rubber, polyvinyl alcohol, polyamide, polyacetic acid. A pressure-sensitive adhesive containing a resin or rubber component, such as a vinyl type, can be used. Among these pressure-sensitive adhesives, acrylic pressure-sensitive adhesives made of acrylic resins; urethane-based pressure-sensitive adhesives such as polyether-based polyurethane and polyester-based polyurethane; silicone-based pressure-sensitive adhesives such as organopolysiloxane and alkylarylpolysiloxane; polyisobutylene, Butyl rubber, styrene / butadiene copolymer (SBR), styrene / isoprene / styrene block copolymer (SIS), styrene / butadiene / styrene block copolymer (SBS), styrene / ethylene / butylene / styrene block copolymer (SBS) SEBS), rubber adhesives such as styrene / ethylene / propylene / styrene block copolymer (SEPS) and hydrogenated products of SBR are preferably used. Acrylic adhesives are particularly preferred from the viewpoints of adhesiveness and skin irritation.

  The acrylic resin contained in the acrylic pressure-sensitive adhesive is a (meth) acrylic acid alkyl ester having an alkyl group having 1 to 15, preferably 1 to 12, more preferably 8 to 12 carbon atoms. A homopolymer, a copolymer of two or more kinds of (meth) acrylic acid alkyl esters, or one or more of the (meth) acrylic acid alkyl esters and one of other monomers copolymerizable therewith Examples thereof include a copolymer obtained by copolymerizing a seed or more. Note that “(meth) acryl” is a general term for “acryl” and “methacryl” (the same applies hereinafter).

  Specific examples of the alkyl (meth) acrylate include methyl acrylate, ethyl acrylate, isopropyl acrylate, n-butyl acrylate, t-butyl acrylate, isoamyl acrylate, 2-ethylhexyl acrylate, acrylic Acrylic acid alkyl esters such as n-octyl acid, isooctyl acrylate, isononyl acrylate, decyl acrylate, dodecyl acrylate; methyl methacrylate, ethyl methacrylate, n-butyl methacrylate, isobutyl methacrylate, t-butyl methacrylate , Alkyl ester esters such as isoamyl methacrylate, 2-ethylhexyl methacrylate, n-octyl methacrylate, isooctyl methacrylate, isononyl methacrylate, decyl methacrylate, dodecyl methacrylate ; And the like. Preferably, it is isononyl acrylate or 2-ethylhexyl acrylate.

  Other monomers copolymerizable with (meth) acrylic acid alkyl ester include carboxyl group-containing monomers such as acrylic acid, methacrylic acid, maleic acid, itaconic acid, crotonic acid; 2-hydroxyethyl acrylate, acrylic acid Hydroxyl group-containing monomers such as 2-hydroxypropyl; (meth) acrylic acid alkoxypolyalkylene such as methoxydiethylene glycol acrylate, methoxydiethylene glycol methacrylate, methoxydipropylene glycol acrylate, methoxydipropylene glycol methacrylate, ethoxydiethylene glycol acrylate Glycol ester; amino group-containing monomer such as N, N-dimethylaminomethyl acrylate, N, N-dimethylaminoethyl methacrylate, Nt-butylaminoethyl acrylate; Amyl group-containing monomers such as chloramide and methacrylamide; Glycidyl group-containing monomers such as glycidyl methacrylate; Vinyl esters such as vinyl acetate; Unsaturated nitriles such as acrylonitrile and methacrylonitrile; Vinyl aromatic compounds such as styrene; Vinyl chloride; vinyl monomers such as vinyl pyrrolidone; and the like. As other monomers copolymerizable with the (meth) acrylic acid alkyl ester, acrylic acid or vinyl acetate is particularly preferable.

  In the acrylic resin, the (meth) acrylic acid alkyl ester is usually used in a proportion of 50% by mass or more, preferably 60% by mass or more, more preferably 65 to 99% by mass, and still more preferably 70 to 99% by mass. The other monomer copolymerizable with the (meth) acrylic acid alkyl ester is usually 50% by mass or less, preferably 40% by mass or less, more preferably 35 to 1% by mass, and still more preferably 30 to 1% by mass. Used. The production method of the acrylic resin is not particularly limited, and can be produced by a generally employed solution polymerization method, suspension polymerization method or emulsion polymerization method.

(2) Tackifier A tackifier can be blended with the pressure-sensitive adhesive forming the pressure-sensitive adhesive layer as desired in order to adjust the pressure-sensitive adhesive properties. Examples of the tackifier include tackifier resins such as terpene, terpene phenol, coumarone indene, styrene, rosin, xylene, phenol, and petroleum. For acrylic adhesives, if necessary, cross-linking agents such as polyisocyanates, melamine resins, epoxy resins, peroxides, metal chelate compounds; drugs, softeners, fillers, antioxidants, antibacterial agents Additives such as colorants and coloring agents can be blended. In many cases, the tackifier can be used in an amount of 20 parts by mass or less, preferably 15 parts by mass or less based on 100 parts by mass of the resin such as an acrylic resin contained in the adhesive. Moreover, an additive is 10 mass parts or less similarly, More preferably, it is 0.01-5 mass parts, Depending on the kind of additive, it can use still more preferably in the ratio of 0.02-2 mass part.

(3) Adhesive layer adjacent to the support and formed on at least one surface of both surfaces of the support and covering the entire surface thereof The adhesive layer in the patch of the present invention is adjacent to the support, and the support The pressure-sensitive adhesive layer is formed on at least one of the two surfaces and covers the entire surface. Conventionally, in a patch having a support and an adhesive layer, if necessary or desired, the adhesive layer is not provided on the entire surface of the support, but in a pattern such as a lattice, stripe, or dot. was there. However, in the patch of the present invention, if the pressure-sensitive adhesive layer is not a pressure-sensitive adhesive layer that is formed on at least one surface of both sides of the support and covers the entire surface, the pressure-sensitive adhesive layer There is a risk that water may invade from a portion not covered with water or water may permeate, resulting in a decrease in waterproofness as a patch. Therefore, the entire surface of the support is covered with a solution or emulsion containing 5 to 60% by mass, preferably 10 to 50% by mass, more preferably 15 to 45% by mass of the resin or rubber component forming the pressure-sensitive adhesive layer. It is necessary to apply so that As the solvent or dispersion medium forming the solution or emulsion, water or an organic solvent can be used. As the organic solvent, hexane, toluene, ethyl acetate or the like can be used. The pressure-sensitive adhesive layer may be provided as a pressure-sensitive adhesive layer that is formed on one side of the support, that is, adjacent to the support, only on one side of the support, and covers the entire surface. Moreover, an adhesive layer can also be provided in both surfaces of a support body as needed. When the pressure-sensitive adhesive layer is provided on both sides of the support, the pressure-sensitive adhesive layer provided on the side of the support that does not contact the skin is made thinner than the pressure-sensitive adhesive layer that is normally provided on the side that contacts the skin, and is applied to the entire surface of the support. Pattern coating or wire coating may be performed without performing the work. By providing the pressure-sensitive adhesive layer on the side not in contact with the skin at the center or the edge of the support, the self-back adhesion can be improved.

3. Breathable patch The patch of the present invention is a breathable patch. The patch of the present invention is particularly preferably a water-repellent patch having an air permeability measured by a Gurley type densometer in accordance with JIS P8117 of less than 10 seconds / 100 mL. The measurement of the breathability of the patch is known per se, and if the breathability of the patch measured by a Gurley densometer in accordance with JIS P8117 is less than 60 seconds / 100 mL, the breathability is reduced. It can be evaluated that the patch has. The air permeability of the patch is preferably less than 50 seconds / 100 mL, more preferably less than 20 seconds / 100 mL, particularly preferably less than 10 seconds / 100 mL, and most preferably less than 2 seconds / 100 mL. The air permeability of the patch of the present invention is not particularly limited, but is usually 0.05 seconds / 100 mL or more, in many cases 0.1 seconds / 100 mL or more, and in most cases 0.2 seconds / 100 mL or more. Specifically, the measurement method of the air permeability is as follows. That is, the adhesive material is cut into a size of 5 cm × 5 cm and attached to a fastening plate (base). The area that penetrates the clamping plate is 645.16 mm ² . Pull out the inner cylinder of the Gurley-type densometer, set it on the stopper, and then tighten the test piece of adhesive material between the clamping plates. The air permeability of the adhesive material based on the average value of n = 3 obtained by gently lowering the inner cylinder and measuring the number of seconds through which 100 mL of air passes is defined as the air permeability of the adhesive material (seconds / 100 mL). . For convenience, you may round off after the decimal point.

  In the patch of the present invention, since the support is made of a woven fabric or a knitted fabric, it is obvious that the support is breathable. Therefore, the patch of the present invention substantially has a breathable adhesive layer. It is characterized in that it is a pressure-sensitive adhesive layer. The patch of the present invention can suppress the stuffiness of the skin due to the patch by providing an air-permeable pressure-sensitive adhesive layer. Further, the air-permeable pressure-sensitive adhesive layer has good cushioning properties, improves the followability to the skin, and improves the adhesion to the skin.

The air-permeable pressure-sensitive adhesive layer in the present invention can be obtained, for example, by the following method. Specifically, 1) Adhesive (adhesive solution diluted with an organic solvent, or adhesive in an aqueous emulsion state), or a physical foaming agent such as air, nitrogen gas, carbon dioxide gas or decomposition as necessary Apply the pressure-sensitive adhesive mixed with the chemical foaming agent of the mold to the process paper, or apply the adhesive to the process paper pre-applied or sprayed with an aqueous solution or organic solvent, then heat and foam Alternatively, a method by a foaming process using a vaporizing action, 2) after applying or spraying mist-like moisture on the undried pressure-sensitive adhesive surface after coating, 110 to 150 ° C, preferably 120 to 140 ° C, usually 2 By heating for 60 minutes, preferably 3 to 50 minutes, more preferably 5 to 40 minutes to form fine pores, 3) a method of discharging the adhesive onto the release paper in the form of threads and fibers, etc. Many fine particles in the adhesive layer Adhesive layer is formed with a hole. From the viewpoint of forming fine and uniform pores, more preferably, the method 1) is a method of obtaining a pressure-sensitive adhesive layer by foaming, and the simple method is the method 2) by applying or spraying water. The pressure-sensitive adhesive layer has a foaming ratio of usually 1.1 to 10 times, preferably 1.2 to 8 times, more preferably 1.5 to 6 times, and further preferably 2 to 5 times. And the density is usually 0.1 to 0.9 g / cm ³ , preferably 0.12 to 0.8 g / cm ³ , more preferably 0.15 to 0.6 g / cm ³ , and still more preferably 0.2. It is in the range of ˜0.5 g / cm ³ . Although the thickness of the adhesive layer which has air permeability is not specifically limited, Usually, it is 10-200 micrometers, Preferably it is 15-150 micrometers, More preferably, it is the range of 20-100 micrometers. In addition, as for the application quantity of an adhesive, about 30-100 g / m < ² > is preferable.

4). Water-repellent patch The air-permeable patch of the present invention is a patch having high water repellency, the water repellency by spray method is grade 5, and the water repellency by IPA method is grade 9 or more, preferably It is characterized by being grade 10 or higher, more preferably grade 11 or higher. Conventionally, in a patch comprising a support and a pressure-sensitive adhesive layer, if the pressure-sensitive adhesive layer has air permeability, water from the outside easily enters, but the air-permeable patch of the present invention supports Since the body is highly water-repellent, the patch can have high water repellency. That is, the patch of the present invention has a water repellency by the spray method of 5th grade and a water repellency by the IPA method of 9th or higher, so that it has high waterproofness while having air permeability, and is excellent. It can have adhesiveness.

[Water repellency (spray method)]
The water-repellent patch of the present invention may be referred to as a water repellency by a spray method [hereinafter referred to as “water repellency (spray method)”. ] Is grade 5. The water repellency by the spray method is measured and evaluated according to the water repellency test (spray test) defined in JIS L1092. Specifically, if there is release paper from the patch, after peeling the release paper, it is cut into a size of 20 cm in length and 20 cm in width to prepare a test piece, and a spray test is performed from the support side. Go and measure the water repellency (spray method) of the test piece. The water repellency (spray method) is evaluated in the range of grades 1 to 5 in comparison with comparative samples (photos). The average value of the water repellency (spray method) of n = 3 test pieces is obtained, and the water repellency (spray method) of the patch is evaluated according to the following criteria using the value rounded up after the decimal point. The water-repellent patch of the present invention has a water repellency (spray method) of “◯”. In addition, when a test piece having a length of 20 cm and a width of 20 cm cannot be secured, five test pieces having a length of 20 cm and a width of 5 cm are taken, and the width direction (short width) is applied by being overlapped by about 1 cm. A test piece having a width of 20 cm is used, and the water repellency (spray method) is evaluated for a portion other than the portion pasted in layers.
○: Water repellency (spray method) is grade 5 Δ: Water repellency (spray method) is grade 3 or 4 ×: Water repellency (spray method) is grade 1 or 2

[Water repellency (IPA method)]
The water-repellent patch of the present invention may be referred to as a water repellency by the IPA method [hereinafter referred to as “water repellency (IPA method)”. ] Is grade 9 or higher. The water repellency test by the IPA method is a water repellency test using a standard solution in which isopropyl alcohol (IPA) and water are mixed. Specifically, using a dropper or the like as a test solution, a standard solution of grades 1 to 12 prepared by mixing IPA and water at a predetermined volume ratio shown in Table 1, and using a dropper or the like, Drop one drop on the top and check for the penetration of the test liquid after 30 seconds. The maximum series of the standard solution that is a test solution that has not soaked is defined as the water repellency (IPA method) of the test piece. The average value of n = 3 is obtained, and the water repellency (IPA method) of the patch is obtained using the value rounded up after the decimal point. A thing with a large water repellency (IPA method) has high water repellency.

〔Waterproof〕
The waterproofness of the patch of the present invention can be evaluated by the following method. That is, if there is release paper from the patch, the release paper is peeled off, and then cut into a size of 100 mm in length and 50 mm in width to prepare a test piece. A pH test paper is placed in the approximate center of the bakelite panel sufficiently larger than the test piece, and the test piece is attached to the bakelite panel so that the test piece completely covers the pH test paper. Whether the bakelite panel with the test piece attached is immersed in a warm bath maintained at a temperature of 37 ° C., and after 30 minutes and after 3 hours, the bakelite panel is removed, the test piece is removed, and the pH test paper is wet with water. Depending on whether or not, the waterproofness [waterproofing (30 minutes) and waterproofing (3 hours)] of the test piece is determined according to the following criteria. The test is performed at n = 3, and the waterproofness [waterproofness (30 minutes) and waterproofness (3 hours)] of the patch is evaluated using the result of n = 2 or more. That is, when the determination result of two or more test pieces among the three test pieces is “◯”, the waterproofness of the patch is evaluated as “◯”, and the patch is evaluated as being waterproof. can do.
○: The pH test paper is not wet with water ×: The pH test paper is wet and discolored

[Throwing properties]
The adhesive material of the present invention is excellent in the anchoring property (hereinafter, sometimes referred to as “anchoring property of the adhesive material” or simply “anchoring property”) of the adhesive that forms the adhesive layer. The anchoring property of the patch is evaluated by the following method. That is, if there is a release paper from the patch, after peeling the release paper, it is cut into a length of 50 mm and a width of 30 mm to prepare a test piece, and the adhesive layers of the patch are bonded together, According to the peeled state between the support and the pressure-sensitive adhesive layer when peeled off by hand, a determination is made according to the following criteria, a test is performed at n = 3, and evaluation is performed using a result of n = 2 or more.
○: No interfacial peeling between the support and the pressure-sensitive adhesive layer was observed (adhesion was good).
(Triangle | delta): Although the support body and the adhesive layer did not interface peeling, the total area of the location where interface peeling was seen is less than 10% with respect to the area of a test piece (a level which does not have a problem in use).
X: The support and the pressure-sensitive adhesive layer were separated at the interface (poor adhesion).

[Self-adhesive strength]
The patch of the present invention has excellent adhesiveness, and the self-back surface adhesive force is preferably 2.5 N / 25 mm or more, more preferably 3 N / 25 mm or more. In addition, although there is no upper limit in particular for the self-back surface adhesive force of the patch of the present invention, it is usually 8 N / 25 mm or less, and in many cases 6 N / 25 mm or less. The method for measuring the self-back surface adhesive strength of the patch is as follows. That is, a test piece (hereinafter referred to as “test piece 1”) of a patch prepared by cutting a bakelite panel (phenol resin plate, manufactured by Sumitomo Bakelite Co., Ltd., PL-1102) into a length of 100 mm and a width of 50 mm. .) A test piece of a patch prepared by cutting to a length of 100 mm and a width of 25 mm (hereinafter sometimes referred to as “test piece 2”) at approximately the center of the support surface of the test piece 1 through the pressure-sensitive adhesive layer surface. And paste it over the edges. Subsequently, according to the method prescribed | regulated to JISZ0237, on the support body surface of the test piece 2, it is crimped | reciprocated once by a 2 kg rubber roll at a speed | rate of 300 mm / min in the atmosphere of temperature 23 degreeC and 50% RH. After leaving in this state for 20 minutes, the peel strength of the test piece 2 with respect to the support surface of the test piece 1 is measured under the conditions of a peel angle of 180 degrees and a peel speed of 300 mm / min. N / 25 mm). The average value of n = 3 is obtained and used as the self-back surface adhesive strength (unit: N / 25 mm) of the patch.

[Adhesion to Bakelite]
The patch of the present invention has excellent adhesiveness, and the adhesive strength to bakelite measured according to JIS Z0237 is 2 N / 25 mm or more, preferably 3.5 N / 25 mm or more. In addition, although there is no upper limit in particular for the adhesive strength to bakelite of the patch of the present invention, it is usually 8 N / 25 mm or less, and in many cases 6 N / 25 mm or less. The method for measuring the adhesive strength of the patch to bakelite is as follows. That is, in an atmosphere of a temperature of 23 ° C. and 50% RH, a test piece of an adhesive material prepared by cutting to a length of 150 mm and a width of 25 mm was attached to the bakelite panel, and a 2 kg rubber roll was applied at a speed of 300 mm / min. 1 reciprocating. After leaving in this state for 20 minutes, the peel force is measured under the conditions of a peel angle of 180 degrees and a peel speed of 300 mm / min to determine the adhesive strength (unit: N / 25 mm) of the test piece to bakelite. The average value of n = 3 is obtained and defined as the adhesive strength of the patch to bakelite (unit: N / 25 mm).

[Resistance to glass]
The patch of the present invention has excellent adhesiveness, and has a glass holding force measured according to a method defined in JIS Z0237 of 0.05 mm or more, preferably 0.08 mm or more. In addition, although there is no upper limit in particular with respect to the glass holding force of the patch of the present invention, it is usually 0.3 mm or less, and in many cases 0.2 mm or less. The method for measuring the adhesive force of the patch to glass is as follows. That is, in an atmosphere of a temperature of 23 ° C. and 50% RH, a test piece of an adhesive material cut into a glass plate having a length of 20 mm and a width of 12 mm and backed with a carton tape was attached, and a 2 kg rubber roll was applied to a 300 mm / One reciprocating pressure is applied at a speed of minutes. After leaving for 20 minutes, the patch is hung so as to hang vertically, a load of 200 g is applied, and the length of displacement (mm) after 60 minutes is measured to determine the test piece's resistance to glass. The average value of n = 3 is obtained and is defined as the holding power of the patch to glass (unit: mm).

(Probe tack)
The patch of the present invention has excellent adhesiveness and at the same time, is easy to handle and has little skin irritation at the time of peeling from the skin or the like, and the value measured by the probe tack test method is 0.84 N / 5 mmφ or less, preferably 0.81 N / 5 mmφ or less. The probe tack value of the patch of the present invention has no particular lower limit, but is usually 0.5 N / 5 mmφ or more, and in many cases 0.6 N / 5 mmφ or more. The method for measuring the probe tack of the patch is as follows. That is, in accordance with the probe tack test method described as a reference in JIS Z 0237 (1991), an NS probe tack tester (manufactured by Nichiban Co., Ltd.) was used in an atmosphere at a temperature of 25 ° C. and 50% RH. The diameter of the cylindrical contact (probe) is 5 mm, the pressing force is 0.98 N / cm ² , the contact time is 1 second, the peeling speed is 10 mm / second, and the average value of n = 3 is calculated. The probe tack of the patch (unit: N / 5 mmφ) is obtained.

5. Release paper The patch of the present invention is formed on a support made of a fabric treated with a fluororesin-based water repellent, and on the at least one surface of both sides of the support adjacent to the support. Although it is a breathable patch with a pressure-sensitive adhesive layer to cover, it may be a patch with a release paper so as to come into contact with the surface of the pressure-sensitive adhesive layer opposite to the support. . As the release paper, those usually used as the release paper for the patch can be used, and can be appropriately selected in consideration of the peelability and flexibility of the adhesive layer. For example, plastic film (resin film) such as polyethylene terephthalate (PET), polybutylene terephthalate, polyethylene naphthalate, unstretched polypropylene, stretched polypropylene, polyethylene, polyurethane, polyvinyl chloride, polystyrene; resin film, synthetic paper, synthetic fiber, etc. Use a colorless or colored sheet such as a silicone-treated paper treated with a silicone resin; a fluororesin-coated film in which a resin film is coated with a fluororesin; a laminated paper in which polyethylene foil is laminated on aluminum foil or kraft paper; Can do. In particular, a release-treated resin film such as a silicone-treated PET film, a silicone-treated polypropylene film, a silicone-treated polyethylene film, a fluororesin-coated PET film, a fluororesin-coated polypropylene film, or a fluororesin-coated polyethylene film is preferably used. A laminate of a mold-processed resin film and paper, a resin film on which aluminum is vapor-deposited, paper coated with silicone oil or the like is also used. The release paper release treatment can be performed not only on the surface of the pressure-sensitive adhesive layer but also on the surface opposite to the pressure-sensitive adhesive layer. Moreover, in order to make it easy to take out the patch from the packaging material, an uneven shape may be provided on one side or both sides of the release paper. The thickness of the release paper is not particularly limited, but is usually 10 μm to 1 mm, preferably 20 to 500 μm, more preferably 40 to 200 μm.

6). Manufacturing method of patch material The patch material of the present invention comprises a support made of a woven or knitted fabric treated with a fluororesin-based water repellent, and at least one surface of both sides of the support adjacent to the support. A breathable patch material having a pressure-sensitive adhesive layer that covers the entire surface, and has a water repellency of 5th grade by the spray method and a water repellency of 9th grade or more by the IPA method. The production method is not particularly limited as long as a water-repellent patch having the above characteristics can be obtained. Usually, a method for producing a water-repellent patch comprising a step of obtaining a support by treating a woven or knitted fabric with a fluororesin-based water repellent and a step of imparting air permeability to the pressure-sensitive adhesive layer. Adopted. For example, a resin or rubber solution or emulsion, which is a pressure-sensitive adhesive forming a pressure-sensitive adhesive layer, is formed on a support made of a woven or knitted fabric treated with a fluororesin-based water repellent. A breathable pressure-sensitive adhesive layer may be formed by coating so that the pressure-sensitive adhesive has breathability by foaming or the like. Further, by applying a resin solution or emulsion that is an adhesive forming an adhesive layer on the release-processed process paper, and making the adhesive air-permeable by foaming treatment or the like, aeration A method of placing a support made of a woven fabric or a knitted fabric treated with a fluororesin-based water repellent and then laminating by heating and pressurizing with a heated roll You can also. When the patch of the present invention further comprises release paper, the release paper may be further laminated on the pressure-sensitive adhesive layer, or the release-processed process paper may be used as it is. As described above, the adhesive material of the present invention includes a support and an adhesive layer that is adjacent to the support and is formed on at least one surface of the support and covers the entire surface. Since it is provided, a solution or emulsion of a resin or the like that is an adhesive is not applied in a pattern.

7). Water-repellent roll-like patch The patch of the present invention can further be provided with a release paper, if necessary, and provided as a sheet-like water-repellent patch. It can be provided as a water-repellent roll-shaped patch formed from the patch. In particular, according to the present invention, a water-repellent roll-like patch for taping tape is provided. The water-repellent roll-like patch may be obtained by winding a patch with release paper into a roll, but the water-repellent patch of the present invention has excellent self-back adhesion, so the release paper A water-repellent roll-like patch without a release paper can also be obtained by sequentially winding a water-repellent patch that does not have a film on the back surface of the patch to form a roll. The release paper may be divided into two or more so as to be easily peeled, or a plurality of cuts may be provided in the width direction.

8). Taping tape The water-repellent patch of the present invention, in particular, the water-repellent roll-like patch, is suitable for taping tape because of its excellent breathability, waterproofness, and self-back adhesiveness. It is. Therefore, according to the present invention, a taping tape formed from a water-repellent patch or a taping tape formed from a water-repellent roll-shaped patch is provided. The taping tape of the present invention prevents or relieves various kinds of pain such as sports taping performed for the purpose of injury prevention, first aid, prevention of recurrence, low back pain, tight joints, joint pain due to injury etc., and hallux valgus pain. It can also be used in the field of taping for medical or daily life. The taping tape of the present invention can also be used for taping performed as an auxiliary means for rehabilitation to support an injury site during the functional recovery period and to relieve pain.

  EXAMPLES Hereinafter, the present invention will be specifically described with reference to examples and comparative examples, but the present invention is not limited to these examples. The method for measuring the characteristics of the water-repellent patch of the present invention is as follows.

(Breathability)
The air permeability of the patch was measured using a Gurley type densometer (manufactured by Tester Sangyo Co., Ltd.) according to the method described above in accordance with JIS P8117. The average value of n = 3 was determined, and the numbers after the decimal point were rounded off to obtain the “air permeability (seconds / 100 mL)” of the patch.

[Water repellency (spray method)]
The water repellency (spray method) of the patch was prepared according to JIS L1092 by preparing a test piece cut to a size of 20 cm in length and 20 cm in width, and based on the average value of n = 3 by the above method. The value was obtained, and the water repellency (spray method) of the patch was evaluated using the value rounded up to the nearest decimal point.

[Water repellency (IPA method)]
The water repellency of the patch (IPA method) was determined as the water repellency (IPA method) of the patch using the value obtained by calculating the average value of n = 3 by the above-described method and rounding up the number after the decimal point.

〔Waterproof〕
The waterproofness of the patch was evaluated by the following method. That is, if there is release paper from the patch, after peeling the release paper, it is cut into a size of 100 mm in length and 50 mm in width to prepare three test pieces, and n = 2 or more by the above method. Using the results, the waterproofness [waterproofness (30 minutes) and waterproofness (3 hours)] of the patch was evaluated. That is, when the determination result of two or more test pieces among the three test pieces is “◯”, the waterproofness of the patch is evaluated as “◯”, and the patch is evaluated as being waterproof. did.
○: The pH test paper is not wet with water ×: The pH test paper is wet and discolored

[Throwing properties]
The anchoring property of the patch was measured by the method described above, judged according to the following criteria, tested at n = 3, and evaluated using the result of n = 2 or more.
○: No interfacial peeling between the support and the pressure-sensitive adhesive layer was observed (adhesion was good).
(Triangle | delta): Although the support body and the adhesive layer did not interface peeling, the total area of the location where interface peeling was seen is less than 10% with respect to the area of a test piece (a level which does not have a problem in use).
X: The support and the pressure-sensitive adhesive layer were separated at the interface (poor adhesion).

[Self-back adhesive strength]
The method for measuring the self-back surface adhesive strength of the patch was obtained by calculating the average value of n = 3 by the above-mentioned method and using it as the self-back surface adhesive strength (unit: N / 25 mm) of the patch.

[Adhesion to Bakelite]
With respect to the adhesive strength of the patch material, the average value of n = 3 was obtained by the above-mentioned method, and the adhesive strength of the patch material against the bakelite (unit: N / 25 mm) was used.

[Resistance to glass]
The holding power to glass of the patch was determined as an average value of n = 3 by the above-described method, and was defined as the holding power to glass (unit: mm) of the patch.

(Probe tack)
With respect to the probe tack of the patch, the average value of n = 3 was obtained by the method described above, and the probe tack of the patch (unit: N / 5 mmφ) was obtained.

[Example 1]
As a woven or knitted fabric for forming a support, warp yarns are arranged with 20 core spun yarns having polyurethane fibers as a core at a density of 32 pieces / inch, and weft yarns are 16th cotton 100%. A woven fabric (hereinafter referred to as “base fabric a”) having a density of 60 yarns / inch was used. Asahi Guard (registered trademark) AG-E082 (hereinafter referred to as “water repellent A”) manufactured by Asahi Glass Co., Ltd., which is a fluororesin-based water repellent, has a treatment concentration of 4.5 mass%, that is, After immersing the base fabric a in an aqueous solution diluted with purified water so that the concentration of the liquid medicine A is 4.5% by mass at room temperature for 20 minutes, the excess liquid is squeezed out and removed. The substrate was dried at 180 ° C. for 10 minutes to obtain a support made of a fabric treated with a fluororesin water repellent (water repellent A). The amount of the fluororesin contained in the base fabric a was calculated to be about 1.1 g / m ² from the mass of the base fabric a before and after the treatment. By the water repellent treatment with the water repellent A, no adhesion or fusion was observed between the fibers constituting the base fabric a, and the base fabric a maintained flexibility and breathability. In addition, an opening (an area of about 0.01 to 0.25 mm ² ) having a size of about 0.1 to 0.5 mm on one side was recognized in the base fabric a.

On the other hand, 100 parts by mass of an acrylic pressure-sensitive adhesive obtained by copolymerizing isononyl acrylate / acrylic acid = 96 parts by mass / 4 parts by mass, a crosslinking agent (trade name “TETRAD (registered trademark)” manufactured by Mitsubishi Gas Chemical Co., Ltd. X ”An organic solvent solution (ethyl acetate, solid content: 40% by mass) added with 0.1 part by weight of the organic resin solution was applied to the entire surface of the process paper that had been release-treated with silicone resin so that the thickness was 50 μm. It was coated with ^2. then, as breathable process, after spraying the distilled water coated surface of the undried pressure-sensitive adhesive, and heated for 5 minutes at a maximum temperature of 125 ° C., to form fine pores, a breathable Then, the pressure-sensitive adhesive layer made of an acrylic resin was formed, and the support and the pressure-sensitive adhesive layer were bonded to each other by placing the support on the pressure-sensitive adhesive layer and passing between the heating rolls. After matching, cut, support, and A patch having an adhesive layer formed on one surface of both sides of the support and adjacent to the support and having an adhesive layer covering the entire surface was obtained. Method 2), water repellency (IPA method), waterproofness (30 minutes and 3 hours), anchoring property, self-back surface adhesive strength, adhesive strength against bakelite, holding strength against glass and probe tack are shown in Table 2. Show.

[Example 2]
The water repellent A used for the water repellent treatment of the woven fabric is adjacent to the support and the support in the same manner as in Example 1 except that the treatment concentration is changed to 10% by mass. Then, a patch having an adhesive layer formed on one surface of both surfaces of the support and covering the entire surface was obtained. In addition, the amount of the fluororesin contained in the base fabric a was calculated to be about 4.0 g / m ² from the mass of the base fabric a before and after the treatment. About the obtained patch, air permeability, water repellency (spray method), water repellency (IPA method), waterproofness (30 minutes and 3 hours), anchoring property, self-back surface adhesive strength, adhesive strength against bakelite and probe The results of measuring the tack are shown in Table 2.

[Example 3]
The water repellent A used for the water repellent treatment of the woven fabric is NK guard (registered trademark) S-02 (hereinafter referred to as “water repellent B”) manufactured by Nikka Chemical Co., Ltd., which is a fluororesin water repellent. In the same manner as in Example 2 except that it was changed to, the support and the pressure-sensitive adhesive layer that is formed on one side of both sides of the support and covers the entire surface are provided. A patch was obtained. In addition, the amount of the fluororesin contained in the base fabric a was calculated to be about 2.7 g / m ² from the mass of the base fabric a before and after the treatment. About the obtained patch, the results of measurement of air permeability, water repellency (spray method), water repellency (IPA method), waterproofness (30 minutes and 3 hours), anchoring property and self-back surface adhesive strength are shown. It is shown in 2.

[Example 4]
A woven or knitted fabric for forming a support is arranged with a density of 32 pieces / inch of 40th core spun yarn having polyurethane fiber as the core for warp, and 100% cotton of 16th for weft. Except for changing to a woven fabric (hereinafter referred to as “base fabric b”) having a density of 72 yarns / inch, the support and the support were adjacent to each other in the same manner as in Example 1. Then, a patch having an adhesive layer formed on one surface of both surfaces of the support and covering the entire surface was obtained. The amount of the fluororesin contained in the base fabric b was calculated to be about 1.3 g / m ² from the mass of the base fabric b before and after the treatment. About the obtained patch, air permeability, water repellency (spray method), water repellency (IPA method), waterproofness (30 minutes and 3 hours), anchoring property, self-back surface adhesive force, adhesive strength against bakelite, The results of measuring the glass holding force and the probe tack are shown in Table 2.

[Comparative Example 1]
Except that the treatment concentration of the aqueous solution of the water repellent A used for the water repellent treatment of the woven fabric was changed to 3.5% by mass, the support and the support were adjacent to the support in the same manner as in Example 1. Then, a patch having an adhesive layer formed on one surface of both surfaces of the support and covering the entire surface was obtained. The amount of the fluororesin contained in the base fabric a was calculated to be about 0.9 g / m ² from the mass of the base fabric a before and after the treatment. About the obtained patch, air permeability, water repellency (spray method), water repellency (IPA method), waterproofness (30 minutes and 3 hours), anchoring property, self-back surface adhesive force, adhesive strength against bakelite, The results of measuring the glass holding force and the probe tack are shown in Table 2.

[Comparative Example 2]
The water repellent A used for the water repellent treatment of the woven fabric is a paraffinic water repellent (non-fluorine resin water repellent) Neoseed (registered trademark) NR-90 (hereinafter referred to as “repellent repellent”). Except for the change to “Liquid C”.), The support was formed on one side of both sides of the support and adjacent to the support in the same manner as in Comparative Example 1, and the entire surface A patch having a pressure-sensitive adhesive layer was obtained. In addition, the amount of non-fluorine resin contained in the base fabric a was calculated to be about 1.3 g / m ² from the mass of the base fabric a before and after the treatment. About the obtained patch, air permeability, water repellency (spray method), water repellency (IPA method), waterproofness (30 minutes and 3 hours), anchoring property, self-back surface adhesive force, adhesive strength against bakelite, The results of measuring the glass holding force and the probe tack are shown in Table 2.

From Table 2, a support made of a woven or knitted fabric treated with a fluororesin-based water repellent, and adjacent to the support and formed on at least one surface of the support, the entire surface A pressure-sensitive adhesive layer comprising a pressure-sensitive adhesive layer covering
The water-repellent patch of Examples 1 to 4 having a water repellency level of 5 by the spray method and a water repellency level of 11 or 12 by the IPA method is as follows:
1) It has a high waterproof property that maintains the waterproof property even if immersed in a warm bath for 30 minutes and 3 hours.
2) Excellent anchoring property, self-back surface adhesive strength is 3.1 to 5.0 N / 25 mm, and has high self-back surface adhesiveness required for layering,
3) Adhesiveness to the skin etc. is sufficiently high in view of the adhesive strength against bakelite and the retention strength against glass, and
4) Since the probe tack is as small as 0.79 to 0.83 N / 5 mmφ, the handleability is good, and there is little concern that there will be pain or peeling when the patch is peeled from the skin. As a result, it was a water-repellent patch suitable for taping tape applications.

  On the other hand, a support made of a woven fabric treated with a fluororesin-based water repellent, and an adhesive layer adjacent to the support and formed on at least one of both surfaces of the support and covering the entire surface Although it is a breathable patch material with a rating of 3 for a water repellency test by a spray method (less than 5th grade) and 7 for a water repellency test by an IPA method (less than 9th grade) The patch of Comparative Example 1 is poor in waterproofness because water penetrates when immersed in a warm bath for 30 minutes, and the handleability is poor because the probe tack is as large as 0.86 N / 5 mmφ. It has been found that there is a possibility of causing pain and peeling of the skin when peeling off.

  Further, instead of the fluororesin water repellent, a support made of a woven fabric subjected to water repellent treatment with a paraffin water repellent, and adjacent to the support, formed on at least one surface of the support, The adhesive material of Comparative Example 2, which is a breathable adhesive material provided with an adhesive layer covering the entire surface, has a second grade (less than fifth grade) evaluated by a water repellency test by the spray method, and the IPA method. Evaluation by the water repellency test is grade 3 (less than 9 grade), water repellency is low, water is infiltrated when immersed in a warm bath for 30 minutes, the waterproofness is low, and the self-back surface adhesion is 2.2 N / 25 mm Therefore, the self-back surface adhesiveness required for the overlaying was low. Since the probe tack is 0.82 N / 5 mmφ, the handling property is good, and it is estimated that there is less concern about pain and peeling when peeling the patch from the skin. It has been found that it is difficult to achieve a balance between the self-back surface adhesiveness and the water repellency and handleability in the water repellent treatment of the fabric with a water repellent other than the agent.

  The present invention comprises a support made of a woven fabric or a knitted fabric treated with a fluororesin-based water repellent, and is formed on at least one surface of both sides of the support adjacent to and adjacent to the support. A water-repellent patch comprising a pressure-sensitive adhesive layer covering the water, wherein the water repellency by the spray method is grade 5 and the water repellency by the IPA method is grade 9 or higher. Providing a patch suitable for use in taping tape, etc. that is breathable, has high water repellency, and has good self-back adhesion, in the patch used in applications such as taping tape. Therefore, the industrial applicability is high.

That is, according to the present invention, a support made of a woven or knitted fabric treated with a fluororesin-based water repellent, and adjacent to the support, formed on at least one surface of the support, A pressure-sensitive adhesive layer comprising an adhesive layer covering the entire surface, and having air permeability,
(I) The support is obtained by treating with a solution of a fluororesin water repellent by a pad nip method, and the fluororesin water repellent excludes a water repellent containing an isocyanate,
(Ii) The amount of the fluororesin contained in the support made of the fabric is 1.0 to 4.1 g / m ² ;
(Iii) The pressure-sensitive adhesive layer is an air-permeable pressure-sensitive adhesive layer formed by subjecting the pressure-sensitive adhesive forming the pressure-sensitive adhesive layer to air permeability.
(Iv) The pressure-sensitive adhesive forming the pressure-sensitive adhesive layer is an acrylic, urethane-based, silicone-based, or rubber-based pressure-sensitive adhesive containing a resin or rubber component,
(V) water repellency by a spray method of bonding material該貼 is 5 primary, and,
(Vi) There is provided a water-repellent patch, wherein the patch has a water repellency by the IPA method of 9 or higher.

The fluororesin-based water repellent used for treating the fabric is usually used in the form of a fluororesin-based water repellent solution diluted with a solvent, and preferably has a treatment concentration (that is, a fluororesin). Concentration of fluororesin water repellent in the water repellent solution) 4 to 12% by mass (for example, when the solid content in the fluororesin water repellent is 20% by mass, The solid content in the solution is 0.8 to 2.4% by mass.), More preferably 4.2 to 11% by mass, and still more preferably 4.4 to 10.5% by mass. The fluororesin-based water repellent solution is used, for example, in a state diluted to a dilution factor of 8.3 to 25 times with a solvent such as water or water-alcohol, preferably in an aqueous solution diluted with purified water. . If the treatment concentration (and the fluororesin concentration in the fluororesin water repellent solution) is too low, the water repellency of the support and the patch may be insufficient. When the treatment concentration is too high, the water repellency of the support and the patch is good, but the self-back surface adhesiveness tends to decrease. For example, when a fluororesin water repellent solution is prepared such that the treatment concentration of the fluororesin water repellent is 50% by mass, the adhesive strength of the back surface of the patch is compared with that when the treatment concentration is 10% by mass. It was found that it dropped to about half or less. In addition, in order to obtain a patch having a water repellency of 5 grades by the spray method and a water repellency of 9 grades or more by the IPA method, it is contained in a support made of a fabric by the treatment as described above. fluororesin amount, may preferably 0.5~4.5g / ^{m 2,} more preferably 0.8~4.3g / ^{m 2,} more preferably made to be 1~4.1g / ^{m 2.} In the present invention, it is 1 to 4.1 g / m ² . The amount of fluororesin contained in the support can be calculated from the mass of the fabric before and after treatment. In addition, a change is not seen by the unevenness | corrugation of a fabric by performing a water-repellent process using a fluororesin type water repellent. The fluororesin water repellent of the present invention is one excluding a water repellent containing an isocyanate.

(1) Adhesive The adhesive forming the adhesive layer is not particularly limited as long as it has low skin irritation, and is acrylic, urethane, silicone, rubber, polyvinyl alcohol, polyamide, polyacetic acid. A pressure-sensitive adhesive containing a resin or rubber component, such as a vinyl type, can be used. In the present invention, the pressure-sensitive adhesive contains an acrylic, urethane, silicone, or rubber resin or rubber component. Among these pressure-sensitive adhesives, acrylic pressure-sensitive adhesives made of acrylic resins; urethane-based pressure-sensitive adhesives such as polyether-based polyurethane and polyester-based polyurethane; silicone-based pressure-sensitive adhesives such as organopolysiloxane and alkylarylpolysiloxane; polyisobutylene, Butyl rubber, styrene / butadiene copolymer (SBR), styrene / isoprene / styrene block copolymer (SIS), styrene / butadiene / styrene block copolymer (SBS), styrene / ethylene / butylene / styrene block copolymer (SBS) SEBS), rubber adhesives such as styrene / ethylene / propylene / styrene block copolymer (SEPS) and hydrogenated products of SBR are preferably used. Acrylic adhesives are particularly preferred from the viewpoints of adhesiveness and skin irritation.

The air-permeable pressure-sensitive adhesive layer in the present invention can be obtained, for example, by the following method. Specifically, 1) Adhesive (adhesive solution diluted with an organic solvent, or adhesive in an aqueous emulsion state), or a physical foaming agent such as air, nitrogen gas, carbon dioxide gas or decomposition as necessary Apply the pressure-sensitive adhesive mixed with the chemical foaming agent of the mold to the process paper, or apply the adhesive to the process paper pre-applied or sprayed with an aqueous solution or organic solvent, then heat and foam Alternatively, a method by a foaming process using a vaporizing action, 2) after applying or spraying mist-like moisture on the undried pressure-sensitive adhesive surface after coating, 110 to 150 ° C, preferably 120 to 140 ° C, usually 2 By heating for 60 minutes, preferably 3 to 50 minutes, more preferably 5 to 40 minutes to form fine pores, 3) a method of discharging the adhesive onto the release paper in the form of threads and fibers, etc. Many fine particles in the adhesive layer Adhesive layer is formed with a hole. From the viewpoint of forming fine and uniform pores, more preferably, the method 1) is a method of obtaining a pressure-sensitive adhesive layer by foaming, and the simple method is the method 2) by applying or spraying water. The pressure-sensitive adhesive layer has a foaming ratio of usually 1.1 to 10 times, preferably 1.2 to 8 times, more preferably 1.5 to 6 times, and further preferably 2 to 5 times. And the density is usually 0.1 to 0.9 g / cm ³ , preferably 0.12 to 0.8 g / cm ³ , more preferably 0.15 to 0.6 g / cm ³ , and still more preferably 0.2. It is in the range of ˜0.5 g / cm ³ . Although the thickness of the adhesive layer which has air permeability is not specifically limited, Usually, it is 10-200 micrometers, Preferably it is 15-150 micrometers, More preferably, it is the range of 20-100 micrometers. In addition, as for the application quantity of an adhesive, about 30-100 g / m < ² > is preferable.
That is, in the present invention, the pressure-sensitive adhesive layer is an air-permeable pressure-sensitive adhesive layer formed by subjecting the pressure-sensitive adhesive forming the pressure-sensitive adhesive layer to air permeability.

That is, according to the present inventors , a support made of a woven fabric or a knitted fabric treated with a fluororesin-based water repellent, and formed on at least one side of both sides of the support adjacent to the support. A pressure-sensitive adhesive layer comprising an adhesive layer covering the entire surface, and having air permeability,
(I) The support is obtained by treating with a solution of a fluororesin water repellent by a pad nip method, and the fluororesin water repellent excludes a water repellent containing an isocyanate,
(Ii) The amount of the fluororesin contained in the support made of the fabric is 1.0 to 4.1 g / m ² ;
(Iii) The pressure-sensitive adhesive layer is an air-permeable pressure-sensitive adhesive layer formed by subjecting the pressure-sensitive adhesive forming the pressure-sensitive adhesive layer to air permeability.
(Iv) The pressure-sensitive adhesive forming the pressure-sensitive adhesive layer is an acrylic, urethane-based, silicone-based, or rubber-based pressure-sensitive adhesive containing a resin or rubber component,
(V) the water repellency by spraying the patch is grade 5, and
(Vi) There is provided a water-repellent patch, wherein the patch has a water repellency by the IPA method of 9 or higher.
According to the present invention, a support made of a woven or knitted fabric treated with a fluororesin-based water repellent, and adjacent to the support and formed on at least one surface of the support, the surface A pressure-sensitive adhesive layer comprising an adhesive layer covering the entire surface of
(I) The support is obtained by treating with a solution of a fluororesin water repellent by a pad nip method, and the fluororesin water repellent excludes a water repellent containing isocyanate. And, the fluororesin water repellent is a C6 fluororesin water repellent with a perfluorooctanoic acid content of 5 ppm or less,
(Ii) The amount of the fluororesin contained in the support made of the fabric is 1.1 to 4.1 g / m ² ;
(Iii) The pressure-sensitive adhesive layer is an air-permeable pressure-sensitive adhesive layer formed by subjecting the pressure-sensitive adhesive forming the pressure-sensitive adhesive layer to air permeability.
(Iv) The pressure-sensitive adhesive forming the pressure-sensitive adhesive layer is a pressure-sensitive adhesive containing an acrylic resin,
(V) the water repellency of the patch by the spray method is grade 5,
(Vi) the water repellency according to the IPA method of the patch is 9 or more, and
(Vii) The air permeability of the patch measured with a Gurley densometer in accordance with JIS P8117 is less than 10 seconds / 100 mL.
A water-repellent patch is provided.

Moreover, according to the present inventors , the patch of the following aspects is provided.
(1) A support made of a woven fabric or a knitted fabric treated with a fluororesin-based water repellent, and adjacent to the support and formed on at least one surface of the support. A patch having air permeability, comprising an adhesive layer for covering,
Water repellency by spray method is grade 5 and water repellency by IPA method is grade 9 or higher
This is a water-repellent patch.
(2) The water-repellent patch according to 1 above, wherein the pressure-sensitive adhesive forming the pressure-sensitive adhesive layer is an acrylic pressure-sensitive adhesive.
(3) The water-repellent patch according to the above 1 or 2, comprising a pressure-sensitive adhesive layer obtained by foaming.
(4) The water-repellent patch according to any one of 1 to 3 above, wherein the support is obtained by treatment with a fluororesin water repellent solution prepared to a treatment concentration of 4 to 12% by mass.
(5) The water-repellent patch according to any one of 1 to 4 above, wherein the amount of the fluororesin contained in the support made of the fabric is 0.5 to 4.5 g / m ² .
(6) The water-repellent patch according to any one of 1 to 5 above, wherein the support is obtained by treatment with a fluororesin-based water repellent solution by a pad nip method.
(7) The water-repellent patch according to any one of 1 to 6 above, wherein the air permeability measured by a Gurley type densometer in accordance with JIS P8117 is less than 10 seconds / 100 mL .

As fluororesin-based water repellent used for water repellent treatment of fabrics, PFOA (C8: perfluorooctanoic acid), which has been promoted in various countries due to concerns about bioaccumulation, has been reduced as much as possible. (5 ppm or less) It is preferable to use a C6 fluororesin water repellent, for example, Asahi Guard (registered trademark) AG-E082 manufactured by Asahi Glass Co., Ltd. or NK Guard (registered trademark) manufactured by Nikka Chemical Co., Ltd. S-02 etc. are mentioned as a commercial item. In the present invention, the fluororesin-based water repellent excludes the isocyanate-containing water-repellent, and the fluororesin-based water repellent is a C6-based fluororesin having a perfluorooctanoic acid content of 5 ppm or less. It is a system water repellent.

The fluororesin-based water repellent used for treating the fabric is usually used in the form of a fluororesin-based water repellent solution diluted with a solvent, and preferably has a treatment concentration (that is, a fluororesin). Concentration of fluororesin water repellent in the water repellent solution) 4 to 12% by mass (for example, when the solid content in the fluororesin water repellent is 20% by mass, The solid content in the solution is 0.8 to 2.4% by mass.), More preferably 4.2 to 11% by mass, and still more preferably 4.4 to 10.5% by mass. The fluororesin-based water repellent solution is used, for example, in a state diluted to a dilution factor of 8.3 to 25 times with a solvent such as water or water-alcohol, preferably in an aqueous solution diluted with purified water. . If the treatment concentration (and the fluororesin concentration in the fluororesin water repellent solution) is too low, the water repellency of the support and the patch may be insufficient. When the treatment concentration is too high, the water repellency of the support and the patch is good, but the self-back surface adhesiveness tends to decrease. For example, when a fluororesin water repellent solution is prepared such that the treatment concentration of the fluororesin water repellent is 50% by mass, the adhesive strength of the back surface of the patch is compared with that when the treatment concentration is 10% by mass. It was found that it dropped to about half or less. In addition, in order to obtain a patch having a water repellency of 5 grades by the spray method and a water repellency of 9 grades or more by the IPA method, it is contained in a support made of a fabric by the treatment as described above. fluororesin amount, may preferably 0.5~4.5g / ^{m 2,} more preferably 0.8~4.3g / ^{m 2,} more preferably made to be 1~4.1g / ^{m 2.} In the present invention, a 1.1 ~4.1g / ^{m 2.} The amount of fluororesin contained in the support can be calculated from the mass of the fabric before and after treatment. In addition, a change is not seen by the unevenness | corrugation of a fabric by performing a water-repellent process using a fluororesin type water repellent .

(1) Adhesive The adhesive forming the adhesive layer is not particularly limited as long as it has low skin irritation, and is acrylic, urethane, silicone, rubber, polyvinyl alcohol, polyamide, polyacetic acid. A pressure-sensitive adhesive containing a resin or rubber component, such as a vinyl type, can be used. In the present invention, an adhesive agent containing a tree fat acrylic. Among these pressure-sensitive adhesives, acrylic pressure-sensitive adhesives made of acrylic resins; urethane-based pressure-sensitive adhesives such as polyether-based polyurethane and polyester-based polyurethane; silicone-based pressure-sensitive adhesives such as organopolysiloxane and alkylarylpolysiloxane; polyisobutylene, Butyl rubber, styrene / butadiene copolymer (SBR), styrene / isoprene / styrene block copolymer (SIS), styrene / butadiene / styrene block copolymer (SBS), styrene / ethylene / butylene / styrene block copolymer (SBS) SEBS), rubber adhesives such as styrene / ethylene / propylene / styrene block copolymer (SEPS) and hydrogenated products of SBR are preferably used. Acrylic adhesives are particularly preferred from the viewpoints of adhesiveness and skin irritation.

Claims (13)

A support made of a woven or knitted fabric treated with a fluororesin-based water repellent, and an adhesive that is adjacent to the support and is formed on at least one surface of the support and covers the entire surface An adhesive material having air permeability, comprising a layer,
A water-repellent patch having a water repellency by spray method of 5th grade and a water repellency by IPA method of 9th or higher.   The water-repellent patch according to claim 1, wherein the pressure-sensitive adhesive forming the pressure-sensitive adhesive layer is an acrylic pressure-sensitive adhesive.   The water-repellent patch according to claim 1, further comprising a pressure-sensitive adhesive layer obtained by foaming.   The water repellent patch according to any one of claims 1 to 3, wherein the support is obtained by treatment with a fluororesin water repellent solution prepared to a treatment concentration of 4 to 12 mass%. Fluororesin content contained on a support made of fabric, patch of water repellency according to any one of claims 1 to 4 is 0.5~4.5g / m ^2.   The water-repellent patch according to any one of claims 1 to 5, wherein the support is obtained by treating with a fluororesin water repellent solution by a pad nip method.   The water-repellent patch according to any one of claims 1 to 6, wherein the air permeability measured by a Gurley type densometer in accordance with JIS P8117 is less than 10 seconds / 100 mL.   8. The method according to claim 1, comprising a step of treating a woven fabric or a knitted fabric with a fluororesin-based water repellent to obtain a support, and a step of imparting air permeability to the pressure-sensitive adhesive layer. A method for producing a water-repellent patch.   A water-repellent roll-like patch material formed from the water-repellent patch material according to claim 1.   The water-repellent roll-like patch material according to claim 9, which does not comprise release paper.   The water-repellent roll-shaped patch according to claim 9 or 10, which is used for a taping tape.   A taping tape formed from the water-repellent patch according to any one of claims 1 to 7.   A taping tape formed from the water-repellent roll-shaped patch according to any one of claims 9 to 11.