A heat-reduced adhesive tape and its application

Abstract

The present application relates to C09J7, more particularly, the present application relates to a kind of hot tacky adhesive tape and its application, hot tacky adhesive tape is composed of polyvinyl chloride film, polyester coating, hot tacky adhesive layer and release film;Polyvinyl chloride film, polyester coating, hot tacky adhesive layer and release film are coated from top to bottom and bonded.The hot tacky adhesive tape obtained has very good toughness and conformability, can be adhered to the surface of golf head, is not easy to arch, after the end of golf head paint spraying process, the adhesive tape is automatically arched and falls off from the surface of golf head.

Description

TECHNICAL FIELD

[0001] The present application relates to C09J7, and more particularly, the present application relates to a heat-reducing adhesive tape and its application. BACKGROUND

[0002] The golf head needs to be treated by a paint spraying process, which selectively sprays paint on the head area, thus the area not to be sprayed needs to be protected during high-temperature paint spraying.

[0003] Patent No. CN101804680A provides a golf manufacturing method, which improves the golf manufacturing process and adopts electrostatic spraying to minimize damage to the head. Patent No. CN202412838U provides a high-temperature-resistant protective film for golf head paint spraying, which is obtained by compounding polyolefin film, high-temperature-resistant resin, adhesive layer and release layer and can resist 175℃ high temperature and can be peeled off after high-temperature paint spraying.

[0004] Although some scholars have introduced the concept of protective film on the golf head, the adhesive tape needs to be peeled off after the paint spraying process. In addition, not only does the adhesive tape reduce the adhesion under high-temperature paint spraying conditions and generate bubbles between the golf head surface, affecting the elasticity of the head surface, but also the manual peeling efficiency is low and there may be residual glue after the adhesive tape is peeled off. SUMMARY

[0005] To solve the above problems, the first aspect of the present application provides a heat-reducing adhesive tape, which is composed of a polyvinyl chloride film, a polyester coating layer, a heat-reducing adhesive layer and a release film; the polyvinyl chloride film, the polyester coating layer, the heat-reducing adhesive layer and the release film are coated and bonded from top to bottom.

[0006] Preferably, the total thickness of the heat-reducing adhesive tape is 115±10μm.

[0007] As a preferred technical solution of the present application, the surface tension of the polyvinyl chloride layer is >35 Dyn.

[0008] As a preferred technical solution of the present application, the raw materials of the heat-reducing adhesive layer include 55-75 parts by weight of adhesive structure component, 25-35 parts by weight of viscosity-reducing component, 1-3 parts by weight of cross-linking component and 20-30 parts by weight of fatty acid ester.

[0009] Preferably, the viscosity-reducing component is a microsphere of hydrocarbon wrapped with expandable gas, and the particle size of the microsphere is 10-40μm.

[0010] Preferably, the cross-linking component is toluene-2,4-diisocyanate.

[0011] Preferably, the weight ratio of the adhesive structure component and the viscosity reducing component is (60-71):(28-34).

[0012] As a preferred technical solution of the present application, the adhesive structure component comprises unsaturated ester.

[0013] As a preferred technical solution of the present application, the unsaturated ester comprises methyl methacrylate and butyl acrylate; the unsaturated ester further comprises at least two of octyl acrylate, 2-hydroxyethyl acrylate, and ethyl acetate.

[0014] Preferably, the unsaturated ester comprises methyl methacrylate and butyl acrylate; the unsaturated ester further comprises octyl acrylate, 2-hydroxyethyl acrylate, and ethyl acetate.

[0015] As a preferred technical solution of the present application, the weight ratio of the butyl acrylate and the methyl methacrylate is (120-130):(21-25); the weight percentage of the butyl acrylate in the unsaturated ester is 24.2-26.8%.

[0016] Preferably, the weight ratio of the butyl acrylate and the methyl methacrylate is 126:23.

[0017] Preferably, the weight percentage of the butyl acrylate in the unsaturated ester is 25.2-25.6%.

[0018] Preferably, the weight ratio of the butyl acrylate, the octyl acrylate, the 2-hydroxyethyl acrylate, and the ethyl acetate is (120-130):(40-45):(4-7):300.

[0019] Further preferably, the weight ratio of the butyl acrylate, the octyl acrylate, the 2-hydroxyethyl acrylate, and the ethyl acetate is 126:42:6:300.

[0020] As a preferred technical solution of the present application, the adhesive structure component further comprises ethyl vinyl acetate, adipic acid, and 2,2'-azobis(2-methylpropionitrile).

[0021] As a preferred technical solution of the present application, the weight ratio of the ethyl vinyl acetate and the unsaturated ester is (17-25):(490-510).

[0022] Preferably, the weight ratio of the ethyl vinyl acetate and the unsaturated ester is 22:(495-500).

[0023] Further preferably, the weight ratio of the ethyl vinyl acetate and the unsaturated ester is 22:497.

[0024] The conventional golf head protective film adhesive tape is firmly adhered to the surface of the golf head after the high temperature baking in the paint spraying process of 130-150 DEG C, even though the high temperature resistant protective film for golf head paint spraying provided by the patent of CN202412838U reduces the firm adhesion, the tape still adheres to the golf head, and needs to be manually removed after the paint spraying is completed. In order to overcome the above problems, the applicant proposes a thought that the tape is expected to automatically lose adhesion and fall off after the high temperature paint spraying, which not only completes the protection of the golf head paint spraying, but also does not affect the quality of the head itself, especially the elasticity and hardness, and further improves the industrial production efficiency of the head. However, the applicant also finds that simply introducing a thermal debonding aid into the protective film to achieve the effect of automatic falling off of the protective film is not only unsatisfactory, but also greatly reduces the adhesion, so that the protection of the head during the paint spraying process cannot be realized, and bubbles and other phenomena occur. Therefore, the applicant has carried out a lot of thinking and experiments, and finds that the addition of vinyl acetate and unsaturated fatty ester in the adhesive structure component of the thermal debonding adhesive layer of the tape, and the control of the weight ratio of vinyl acetate and unsaturated ester to 22:(495-500) under the premise that the weight ratio of the adhesive structure component and the debonding component is (60-71):(28-34), unexpectedly makes the tape automatically arch off from the surface of the golf head after the end of the golf head paint spraying process, without residual glue, without affecting the elasticity and hardness of the head itself, and also ensures the adhesion of the tape, realizes good protection of the head during the paint spraying process. The applicant infers that the vinyl acetate and unsaturated ester form a unique crosslinked structure, which can improve the sensitivity of the system to temperature and the lubricating property under the synergistic effect of the microsphere debonding component with a particle size of 10-40 μm in a certain proportion, so as to cause the tape to maintain good adhesion, and to well protect the tape in the high temperature paint spraying process of 130-150 DEG C / 30 minutes, while automatically losing adhesion after the high temperature paint spraying process of 30 minutes.

[0025] As a preferred technical solution of the present application, the weight ratio of the vinyl acetate and the unsaturated fatty acid is (17-25):1.

[0026] Preferably, the weight ratio of the vinyl acetate and the unsaturated fatty acid is 22:1.

[0027] Preferably, the weight ratio of the unsaturated fatty acid and 2,2'-azobis(2-methylpropionitrile) is 1:(0.3-0.5).

[0028] Further preferably, the weight ratio of the unsaturated fatty acid and 2,2'-azobis(2-methylpropionitrile) is 1:0.4.

[0029] Preferably, the preparation method of the thermal debonding adhesive layer is that the raw materials of the thermal debonding adhesive layer are mixed, and the thermal debonding adhesive layer is obtained.

[0030] The preparation method of the heat-reducing adhesive tape is as follows: a polyester coating is coated on a polyvinyl chloride film, a heat-reducing layer is coated on the polyester coating by a comma doctor blade, drying is performed, and a release film is attached.

[0031] The second aspect of the present application provides an application of the heat-reducing adhesive tape, which is applied to the protection of a golf head.

[0032] Compared with the prior art, the present application has the following beneficial effects:

[0033] The polyvinyl chloride layer and the polyester coating layer with a surface tension greater than 35 Dyn and the heat-reducing adhesive layer jointly act, while the total thickness of the heat-reducing adhesive tape is controlled to be 115±10 μm, so that the obtained heat-reducing adhesive tape is not prone to the phenomena of springing, false adhesion and peeling, and each layer can maintain a uniform and stable state for a long time; the vinyl acetate and the unsaturated fatty ester are added to the adhesive structure component of the heat-reducing adhesive layer of the heat-reducing adhesive tape, the weight ratio of the vinyl acetate and the unsaturated ester is controlled to be 22:(495-500), and under the premise that the weight ratio of the adhesive structure component and the adhesion-reducing component is (60-71):(28-34), the tape automatically falls off from the surface of the golf head after the spraying process of the golf head is completed, no residue is generated, the elasticity and hardness of the golf head are not affected, and the adhesion of the tape is also ensured, thereby achieving good protection of the golf head during the spraying process. The heat-reducing adhesive tape obtained by the present application has very good toughness and conformability, and can be attached to the surface of the golf head without being prone to arching. DETAILED DESCRIPTION

[0034] EMBODIMENT

[0035] The raw materials of the composition in the embodiment are all commercially available. Among them, the polyvinyl chloride layer is purchased from Dongguan Bai Xin Plastic Products Co., Ltd., the model number is 813F, the surface tension is greater than 36 Dyn, the polyester coating layer is purchased from SK Chemicals Co., Ltd. in South Korea, the model number is ES-320, the adhesion-reducing component is purchased from Matsumoto Oil and Fat Pharmaceutical Co., Ltd., the model number is F-50D, the adhesion-reducing component is a microsphere of hydrocarbons wrapped with an expandable gas, the particle size of the microsphere is 10-40 μm, the fatty acid ester is ethyl acetate, the CAS number is 141-78-6, and the release film is from Guangdong Shu Cheng Technology Co., Ltd.

[0036] Example 1

[0037] The present embodiment provides a heat-reducing adhesive tape, which is composed of a polyvinyl chloride film, a polyester coating layer, a heat-reducing adhesive layer and a release film; the polyvinyl chloride film, the polyester coating layer, the heat-reducing adhesive layer and the release film are coated and bonded from top to bottom.

[0038] The total thickness of the heat-reducing adhesive tape is 115 μm.

[0039] The raw material of the heat debonding adhesive layer comprises 65 parts by weight of the adhesive structure component, 30 parts by weight of the debonding component, 2 parts by weight of the cross-linking component and 25 parts by weight of the fatty acid ester.

[0040] The cross-linking component is toluene-2,4-diisocyanate.

[0041] The weight ratio of the adhesive structure component and the debonding component is 65:30.

[0042] The adhesive structure component comprises unsaturated ester. The unsaturated ester comprises methyl methacrylate and butyl acrylate; the unsaturated ester also comprises octyl acrylate, 2-hydroxyethyl acrylate and ethyl acetate.

[0043] The weight ratio of butyl acrylate and methyl methacrylate is 126:23. The weight percentage of butyl acrylate in the unsaturated ester is 25.35%.

[0044] The weight ratio of butyl acrylate, octyl acrylate, 2-hydroxyethyl acrylate and ethyl acetate is 126:42:6:300.

[0045] The adhesive structure component also comprises vinyl acetate, sebacic acid and 2,2'-azobis(2-methylpropionitrile).

[0046] The weight ratio of vinyl acetate and unsaturated ester is 22:497. The weight ratio of vinyl acetate and sebacic acid is 22:1. The weight ratio of sebacic acid and 2,2'-azobis(2-methylpropionitrile) is 1:0.4.

[0047] The preparation method of the heat debonding adhesive layer is that the raw material of the heat debonding adhesive layer is mixed.

[0048] The preparation method of the heat debonding adhesive tape is that the polyester coating is coated on the polyvinyl chloride film, the heat debonding layer is coated on the polyester coating by comma doctor blade, dried and attached with release film.

[0049] Example 2

[0050] The example provides a heat debonding adhesive tape, which is different from the embodiment 1 in that the total thickness of the heat debonding adhesive tape is 120 μm. The raw material of the heat debonding adhesive layer comprises 62 parts by weight of the adhesive structure component, 28 parts by weight of the debonding component, 2 parts by weight of the cross-linking component and 23 parts by weight of the fatty acid ester.

[0051] The weight ratio of the adhesive structure component and the debonding component is 62:28.

[0052] The weight ratio of vinyl acetate and unsaturated ester is 20:500.

[0053] Example 3

[0054] The example provides a heat-reduced adhesive tape, different from example 1, the total thickness of the heat-reduced adhesive tape is 118 μm. The raw materials of the heat-reduced adhesive layer include 71 parts by weight of the adhesive structure component, 32 parts by weight of the tack-reducing component, 3 parts by weight of the cross-linking component and 28 parts by weight of the fatty acid ester.

[0055] The weight ratio of the adhesive structure component and the tack-reducing component is 71:32.

[0056] The weight ratio of the vinyl acetate and the unsaturated ester is 25:497.

[0057] Example 4

[0058] The example provides a heat-reduced adhesive tape, different from example 1, the total thickness of the heat-reduced adhesive tape is 110 μm. The raw materials of the heat-reduced adhesive layer include 65 parts by weight of the adhesive structure component, 28 parts by weight of the tack-reducing component, 1.5 parts by weight of the cross-linking component and 24 parts by weight of the fatty acid ester.

[0059] The weight ratio of the adhesive structure component and the tack-reducing component is 60:25.

[0060] The weight ratio of the vinyl acetate and the unsaturated ester is 15:497. The weight ratio of the butyl acrylate and the methyl methylate is 124:25; the weight percentage of the butyl acrylate in the unsaturated ester is 25.2%.

[0061] Example 5

[0062] The example provides a heat-reduced adhesive tape, different from example 1, the weight ratio of the vinyl acetate and the fatty acid is 20:2, and the weight ratio of the fatty acid and the 2,2'-azobis(2-methylpropionitrile) is 2:0.5.

[0063] Performance test:

[0064] 1. Adhesion test: the adhesion of the heat-reduced adhesive tapes obtained in examples 1-5 is tested according to GB / T2792 1998, and the adhesion is tested again after the heat-reduced adhesive tapes are placed for 30 days under the condition of temperature 30℃ and humidity 80%, and the results are shown in Table 1.

[0065] Table 1

[0066]

[0067]

[0068] 2. Mechanical property test: before the paint spraying process of the golf head, the hot adhesion-reducing adhesive tapes obtained from Examples 1-5 were respectively attached on the golf head, and then paint spraying was performed, the temperature of the paint spraying process was 145°C, the time length was 30 min, the resilience rate of the golf head before and after paint spraying was tested according to GB / T 1681-2009, and then the resilience rate decrease rate was calculated, the hardness of the golf head before and after paint spraying was tested according to ASTM D2240, and then whether the hardness decreased was calculated, and whether there was residual glue on the golf head after the paint spraying process was observed, and the results were shown in Table 2:

[0069] Table 2

[0070] Example Drop rate of resilience (%) Hardness after paint spraying is finished Appearance of golf club head after paint spraying 1 0.12 No drop No residual glue 2 0.11 No drop No residual glue 3 0.12 No drop No residual glue 4 1.89 Drop Residual glue 5 1.02 Drop Residual glue

Claims

1. A heat deactivatable adhesive tape, characterized in that, The heat-reducing adhesive tape is composed of a polyvinyl chloride film, a polyester coating, a heat-reducing adhesive layer and a release film; the polyvinyl chloride film, the polyester coating, the heat-reducing adhesive layer and the release film are coated and bonded from top to bottom; the surface tension of the polyvinyl chloride layer is greater than 35 Dyn / cm, and the total thickness of the heat-reducing adhesive tape is 115±10 μm; The raw materials of the heat-reducing adhesive layer include 55-75 parts by weight of a glue structural component, 25-35 parts by weight of a viscosity-reducing component, 1-3 parts by weight of a cross-linking component and 20-30 parts by weight of a fatty acid ester, and the weight ratio of the glue structural component to the viscosity-reducing component is (60-71):(28-34); The glue structural component includes methyl methacrylate, butyl acrylate, octyl acrylate, 2-hydroxyethyl acrylate and ethyl acetate; The glue structural component further includes vinyl acetate, sebum acid and 2,2'-azobis(2-methylpropionitrile); The weight ratio of the vinyl acetate to the glue structural component is 22:(495-500), the weight ratio of the vinyl acetate to the sebum acid is (17-25):1, and the weight ratio of the sebum acid to 2,2'-azobis(2-methylpropionitrile) is 1:(0.3-0.5).

2. The heat debonding tape according to claim 1, wherein The weight ratio of the butyl acrylate to the methyl methacrylate is (120-130):(21-25), and the weight percentage of the butyl acrylate in the glue structural component is 24.2-26.8%.

3. Use of a heat debonding tape according to claim 1, characterized in that, The heat-reducing adhesive tape is applied to the protection of golf heads.

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