JP2009292966A - Adhesive, coating method using the same, and water-sport implement coated by the method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the adhesion performance of a sheet material coated on a water-sport implement under the condition of underwater or high humidity. <P>SOLUTION: In the adhesive which is a water-resistant adhesive obtained by adding a hardener to a pressure-sensitive adhesive and mixing them, the pressure-sensitive adhesive contains an acrylic-based pressure-sensitive adhesive, the hardener contains one of an isocyanate-based hardener, an epoxy-based hardener, and a metal chelate-based hardener, and the weight ratio of the pressure-sensitive adhesive to the hardener is (70-99.99):(30-0.01), preferably 99.74:0.26. The adhesive is coated on a sheet material 2, which is either of a vinyl acetate-based resin, a polyethylene-based resin, a urethane-based resin, an ethylene/vinyl acetate-based resin, an aqueous olefin-based resin, an ethylene vinyl acetate polymer-based resin, a silicone-based resin, or a polyolefin-based resin, and then the sheet material 2 coated with this adhesive M is bonded to and covered over the water-sport implement 4. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an adhesive, a coating method using the adhesive, and a water sports equipment coated by the method.

In general, surfboards used in water sports such as surfing are slippery when the surface is wet. For this reason, non-slip wax is applied for use. However, since the wax drops after several uses, it was necessary to repaint the wax each time, which was troublesome. Also, the wax container must be discarded with the use of a large amount of wax. For this reason, conventionally, a non-slip pad for a surfboard has been proposed (see Patent Document 1). In the device described in Patent Document 1, a pad is bonded to the upper surface of a surfboard, and a slip is prevented by a convex portion on the upper surface of the pad. In addition, the surfboard itself has a rough surface, and is limited in motion performance due to water resistance. For this reason, conventionally, in order to improve the motion performance when the surfboard is slid, a film in which a film having surface smoothness is bonded to the lower surface of the surfboard is known (see Patent Document 2).
JP-A-8-72791 (page 3, FIG. 2) International Publication No. WO 2004/69644 (page 4-5, FIG. 2)

  However, in adhesion to the conventional surfboard, an organic solvent (toluene, ethyl acetate) is added to an acrylic paste material and used as an adhesive. For this reason, there is a problem that when it is used for a long time in water or in a place with high humidity, it gradually deteriorates and becomes easy to peel off.

  The present invention has been made to solve the above-mentioned problems, and has a simple configuration and aims to improve the adhesive performance, and an adhesive excellent in durability even when used in water or in a place with high humidity for a long time. It is an object of the present invention to provide a coating method using an adhesive and a water sports equipment coated by the method.

  The adhesive according to claim 1 of the present invention is a water-resistant adhesive formed by adding a curing agent to an adhesive and mixing the adhesive, the adhesive containing an acrylic adhesive, and the curing agent being an isocyanate curing agent. Any one of an epoxy-based curing agent or a metal chelate-based curing agent is included, and the weight ratio of these pressure-sensitive adhesive and curing agent is 70 to 99.99: 30 to 0.01. It is.

  The adhesive according to claim 1 of the present invention is a water-resistant adhesive obtained by adding a curing agent to the pressure-sensitive adhesive and mixing, the pressure-sensitive adhesive containing an acrylic pressure-sensitive adhesive, and the curing agent being an isocyanate-based curing agent. And any one of an epoxy-based curing agent or a metal chelate-based curing agent, and the weight ratio of these pressure-sensitive adhesive and curing agent is set to 70 to 99.99: 30 to 0.01. Deterioration time of adhesion performance due to moisture is prolonged, and durability performance in water and high humidity atmosphere is improved.

  The coating method according to claim 2 of the present invention is a water-resistant adhesive formed by adding a curing agent to an adhesive and mixing the adhesive, the adhesive containing an acrylic adhesive, and the curing agent being an isocyanate-based curing agent. An adhesive containing either one of an epoxy-based curing agent or a metal chelate-based curing agent and having a weight ratio of these pressure-sensitive adhesive and curing agent of 70 to 99.99: 30 to 0.01 is vinyl acetate. It is applied to the sheet material of any one of resin, polyethylene resin, urethane resin, ethylene vinyl acetate resin, aqueous olefin resin, ethylene vinyl acetate polymer resin, silicon resin or polyolefin resin, The sheet material to which this adhesive is applied is adhered to the material to be coated.

  In the coating method according to claim 2 of the present invention, a water-resistant adhesive obtained by adding a curing agent to the pressure-sensitive adhesive and mixing the pressure-sensitive adhesive includes an acrylic pressure-sensitive adhesive, and the curing agent is an isocyanate-based curing agent, An adhesive containing either one of an epoxy-based curing agent or a metal chelate-based curing agent and having a weight ratio of these pressure-sensitive adhesive and curing agent of 70 to 99.99: 30 to 0.01 is used as a vinyl acetate resin. , Polyethylene resin, urethane resin, ethylene / vinyl / acetate resin, aqueous olefin resin, ethylene vinyl acetate polymer resin, silicon resin or polyolefin resin. By adhering the sheet material coated with the agent to the coated material, the sheet material coated with the coated material becomes moisture after adhesive curing. That the degradation time of the adhesive performance is increased, thereby improving the durability of the in the high water and humidity atmosphere.

  The water sports equipment according to claim 3 of the present invention is a water-resistant adhesive formed by adding a curing agent to an adhesive and mixing the adhesive, the adhesive containing an acrylic adhesive, and the curing agent being an isocyanate-based curing. An adhesive containing any one of an adhesive, an epoxy-based curing agent, or a metal chelate-based curing agent, and having a weight ratio of these pressure-sensitive adhesive and curing agent of 70 to 99.99: 30 to 0.01 is acetic acid. Apply to any one sheet material of vinyl resin, polyethylene resin, urethane resin, ethylene vinyl acetate resin, aqueous olefin resin, ethylene vinyl acetate polymer resin, silicon resin or polyolefin resin. The sheet material to which this adhesive is applied is adhered to the water sports equipment.

  The water sports equipment according to claim 3 of the present invention is a water-resistant adhesive formed by adding a curing agent to an adhesive and mixing the adhesive, the adhesive contains an acrylic adhesive, and the curing agent is an isocyanate-based curing. An adhesive containing any one of an adhesive, an epoxy-based curing agent, or a metal chelate-based curing agent, and having a weight ratio of these pressure-sensitive adhesive and curing agent of 70 to 99.99: 30 to 0.01 is acetic acid. Apply to any one sheet material of vinyl resin, polyethylene resin, urethane resin, ethylene vinyl acetate resin, aqueous olefin resin, ethylene vinyl acetate polymer resin, silicon resin or polyolefin resin. By adhering the sheet material coated with this adhesive to the water sports equipment, the sheet material covered with the water sports equipment has a bonding performance due to moisture after adhesion hardening. Of time becomes longer, thereby improving the durability of the in the high water and humidity atmosphere.

  In the water sports equipment according to claim 4 of the present invention, at least one of the both surfaces of the sheet material is formed to be uneven, and the adhesive according to claim 1 is applied to one surface, with the uneven surface facing outward. Is characterized in that the seat material is bonded to the water sports equipment so as to be disposed on the grip holding surface that holds the grip force.

  In the water sports equipment according to claim 4 of the present invention, at least one of the both surfaces of the sheet material is formed to be uneven, the adhesive according to claim 1 is applied to one surface, and the player faces the uneven surface outward. By adhering the seat material to the water sports equipment so as to be disposed on the grip holding surface that holds the grip force, it is not necessary to use wax, and the grip force is improved.

  The adhesive according to claim 1 of the present invention is a water-resistant adhesive obtained by adding a curing agent to the pressure-sensitive adhesive and mixing the pressure-sensitive adhesive, the pressure-sensitive adhesive containing an acrylic pressure-sensitive adhesive, and the curing agent being an isocyanate-based curing agent, Including any one of epoxy-based curing agent or metal chelate-based curing agent, and the weight ratio of these pressure-sensitive adhesive and curing agent is set to 70-99.99: 30-0.01, so water and humidity at low cost The durability performance in a high atmosphere can be improved, and the application can be expanded.

  The coating method according to claim 2 of the present invention is a water-resistant adhesive formed by adding a curing agent to the pressure-sensitive adhesive and mixing the pressure-sensitive adhesive, the pressure-sensitive adhesive containing an acrylic pressure-sensitive adhesive, and the curing agent being an isocyanate-based curing agent, An adhesive containing either one of an epoxy-based curing agent or a metal chelate-based curing agent and having a weight ratio of these pressure-sensitive adhesive and curing agent of 70 to 99.99: 30 to 0.01 is used as a vinyl acetate resin. , Polyethylene resin, urethane resin, ethylene / vinyl / acetate resin, aqueous olefin resin, ethylene vinyl acetate polymer resin, silicon resin or polyolefin resin. Since the sheet material coated with the agent is adhered to the material to be coated, durability is improved in water and in a humid atmosphere with a simple process. Rukoto can.

  The underwater sports equipment according to claim 3 of the present invention is a water-resistant adhesive formed by adding a curing agent to an adhesive and mixing the adhesive, the adhesive including an acrylic adhesive, and the curing agent being an isothiocyanate curing agent. , An epoxy-based curing agent or a metal chelate-based curing agent, and an adhesive in which the weight ratio of these pressure-sensitive adhesive and curing agent is 70 to 99.99: 30 to 0.01 is vinyl acetate It is applied to any one of resin, polyethylene resin, urethane resin, ethylene vinyl acetate resin, aqueous olefin resin, ethylene vinyl acetate polymer resin, silicon resin or polyolefin resin, and this Adhesive-coated sheet material is bonded to water sports equipment, so durability can be improved in water and in a humid atmosphere, and costs are reduced. Door can be.

  A water-resistant adhesive made by adding a curing agent to an adhesive and mixing it for the purpose of improving the adhesion performance of the sheet material covered with water sports equipment under water or under high humidity conditions. The agent includes an acrylic pressure-sensitive adhesive, and the curing agent includes any one of an isothiocyanate-based curing agent, an epoxy-based curing agent, or a metal chelate-based curing agent, and the weight ratio of these pressure-sensitive adhesive and the curing agent is 99.74: 0.26 adhesive is made of vinyl acetate resin, polyethylene resin, urethane resin, ethylene vinyl acetate resin, aqueous olefin resin, ethylene vinyl acetate polymer resin, silicon resin or polyolefin resin. This was realized by applying to any one of the sheet materials, and covering the sheet material coated with this adhesive by adhering it to the water sports equipment.

  Hereinafter, the present invention will be described by way of examples. In each example, “%” is based on weight unless otherwise specified.

Production Example 1 (when the curing agent is an isothiocyanate-based curing agent)
Acrylic adhesive (manufactured by Soken Chemical Co., Ltd., trade name “SK Dyne 701-TA25”, acrylic paste material (acrylic ester copolymer and tackifying resin) with a content of 40-50%, and a content of 25-25 Manufactured with 35% toluene and 20-30% ethyl acetate) and isothiocyanate-based curing agent (trade name “L-45”, manufactured by Soken Chemical Co., Ltd.), TDI- with 40% -50% content TMP adduct, 40 to 50% toluene, and 10 to 20% ethyl acetate are produced in a weight ratio of 99.74: 0.26 into a reactor equipped with a stirrer. An adhesive is produced by mixing (hereinafter referred to as adhesive 1). The curing agent is an isothiocyanate curing agent, but is not limited thereto, and may be an epoxy curing agent or a metal chelate curing agent. The weight ratio between the pressure-sensitive adhesive and the curing agent is preferably 99.74: 0.26, but is not limited thereto, and the weight ratio between the pressure-sensitive adhesive and the curing agent is 70 to 99.99. : It is good also as 30-0.01. As the weight ratio of the curing agent increases, the strength during curing changes and the strength increases.

  Next, a method of coating a material to be coated (water sports equipment) using the adhesive M and a material to be coated (water sports equipment) coated by the method will be described. FIG. 1 is a partially enlarged cross-sectional view showing a state in which, for example, a sheet material coated with an adhesive is coated on a water sports equipment such as a surfboard. FIGS. 2 (A) and 2 (B) respectively show the sheet material. It is the upper side figure and sectional drawing which show the coated water sports equipment.

  First, the sheet material 2 is configured by, for example, forming an EVA resin (Ethylene-vinyl acetate resin) into a thin piece. As for this sheet material 2, both surfaces 2A and 2B are formed uneven. In addition to EVA resin, the sheet material 2 is made of polyethylene resin, urethane resin, ethylene vinyl acetate resin, aqueous olefin resin, ethylene vinyl acetate polymer resin, silicon resin or polyolefin resin. Any one may be selected and used. The uneven surfaces 2A and 2B of the sheet material 2 are formed in order to ensure grip force. In addition, although the sheet | seat material 2 which concerns on a present Example forms both surfaces in unevenness | corrugation, it is not restricted to this, You may form one surface in unevenness and the other surface smoothly. In that case, a concavo-convex surface is directed outward and bonded to a surfboard 4 described later.

  One of the adhesives M is applied to one surface of the sheet material 2, and a release paper 3 that protects the adhesive surface and easily peels is attached to the application surface. . Next, as shown in FIG. 2, the sheet material 2 is cut in accordance with the shape of the coating portion 5 on the upper surface 4 </ b> A of the surfboard (coating material) 4, the release paper 3 is removed, and the sheet material 2 is adhered to the coating portion 5. It comes to be covered. In this way, the adhesive M starts to cure the sheet material 2 covered with the surfboard 4. After coating, the desired curing performance was obtained after 7 days at room temperature of 23 ° C. Curing performance depends on the temperature. The curing time is longer when the temperature is lower and shorter when the temperature is higher. Under the condition of 40 degrees Celsius, desired curing performance was obtained after 3 days.

Through the above-described steps, the experimental body A in which the adhesive M is applied and the sheet material 2 is coated on the surfboard 4 and cured, and the sheet material 12 in which the conventional adhesive containing no curing agent is applied (the material is the sheet material). The experiment was conducted using the experimental body B in which the surfboard 4 was coated with the same EVA resin as 2).
When the experimental bodies A and B were immersed in water and the time until the sheet materials 2 and 12 were peeled off was confirmed, the experimental body A took approximately twice as long as the experimental body B.

  From the above, it has been found that the adhesive according to the present invention can improve the adhesion performance and is excellent in durability even when used in water or in a place with high humidity for a long time.

It is a partially expanded sectional view which shows the state which adhere | attached the sheet | seat material with which the adhesive agent which concerns on this invention was applied to water sports implements, such as a surfboard. Example 1 (A), (B) is the top view and sectional drawing which respectively show the state which coated the sheet | seat material shown in FIG. 1 on the surfboard.

Explanation of symbols

2 Sheet material 4 Water sports equipment M Adhesive

Claims (4)

  A water-resistant adhesive obtained by adding a curing agent to an adhesive and mixing the adhesive. The adhesive contains an acrylic adhesive, and the curing agent is an isocyanate curing agent, an epoxy curing agent or a metal chelate curing agent. One of them, The adhesive characterized by the weight ratio of these adhesives and hardening | curing agents being 70-99.99: 30-0.01.   The adhesive according to claim 1 is made of vinyl acetate resin, polyethylene resin, urethane resin, ethylene vinyl acetate resin, aqueous olefin resin, ethylene vinyl acetate polymer resin, silicon resin or polyolefin resin. A coating method comprising applying to any one of the sheet materials and adhering the sheet material coated with the adhesive to a material to be coated.   The adhesive according to claim 1 is made of vinyl acetate resin, polyethylene resin, urethane resin, ethylene vinyl acetate resin, aqueous olefin resin, ethylene vinyl acetate polymer resin, silicon resin or polyolefin resin. A water sports equipment which is applied to any one of the sheet materials and the sheet material coated with the adhesive is adhered to the water sports equipment.   The sheet material is formed on at least one surface of both surfaces to be uneven, and the adhesive according to claim 1 is applied to one surface, and the uneven surface is directed to the outside, and the sheet material is disposed on the grip holding surface where the athlete holds the grip force. The water sports equipment according to claim 3, wherein the sheet material is adhered to the water sports equipment.

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