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High water resistance emulsion polyacrylate pressure-sensitive adhesive and preparation method and application thereof

A technology of polyacrylate and pressure-sensitive adhesives, applied in adhesives, ester copolymer adhesives, N-vinylpyrrolidone copolymer adhesives, etc., can solve problems such as water whitening, whitening, and blurring, and achieve improved and water resistance, improved cohesion, low cost effect

Active Publication Date: 2012-07-04
SHENZHEN YUTO PACKAGING TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, most polyacrylate pressure-sensitive adhesives will turn white when in contact with water, because usually: hydrophilic emulsifiers, ionic initiators, and polymers produced by the polymerization of ionic monomers in the emulsion system Enclosed in the film, these substances tend to cause water molecules to diffuse through the latex particle interface and form water pockets in the voids of the dry film, forcing the latex particles to separate, causing water whitening or blurring

Method used

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  • High water resistance emulsion polyacrylate pressure-sensitive adhesive and preparation method and application thereof
  • High water resistance emulsion polyacrylate pressure-sensitive adhesive and preparation method and application thereof
  • High water resistance emulsion polyacrylate pressure-sensitive adhesive and preparation method and application thereof

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Embodiment 1

[0029] According to the formula in Table 1, component (A) is formed by emulsion polymerization. According to the formulation in Table 2, component (B) is formed by stirring and mixing water-soluble monomers and low-temperature free radical initiators at room temperature. According to the formulation in Table 3, slowly add component (B) to component (A) and stir and mix evenly at room temperature to prepare an emulsion polyacrylate pressure-sensitive adhesive. The adhesive is ready-to-use and has the best performance.

[0030] Coat the pressure-sensitive adhesive on the PET film with an RK wire bar coater, the thickness of the adhesive layer is about 35 μm, raise the temperature to 45°C to polymerize the monomer in component (B) for 30 minutes, and the thickness of the adhesive layer is about 25 μm after drying , Paste the silicone protective paper to get the pressure sensitive tape. Cut the pressure sensitive tape into a spline with a width of 25mm and a length of 200mm for ...

Embodiment 2

[0032] According to the formula in Table 1, component (A) is formed by emulsion polymerization. According to the formulation in Table 2, component (B) is formed by stirring and mixing water-soluble monomers and low-temperature free radical initiators at room temperature. According to the formulation in Table 3, slowly add component (B) to component (A) and stir and mix evenly at room temperature to prepare an emulsion polyacrylate pressure-sensitive adhesive. The adhesive is ready-to-use and has the best performance.

[0033] Coat the pressure-sensitive adhesive on the PET film with an RK wire bar coater, the thickness of the adhesive layer is about 40 μm, raise the temperature to 30°C to polymerize the monomer in component (B) for 30 minutes, and the thickness of the adhesive layer after drying is about 25 μm , Paste the silicone protective paper to get the pressure sensitive tape. Cut the pressure sensitive tape into a spline with a width of 25mm and a length of 200mm for ...

Embodiment 3

[0035] According to the formula in Table 1, component (A) is formed by emulsion polymerization. According to the formulation in Table 2, component (B) is formed by stirring and mixing water-soluble monomers and low-temperature free radical initiators at room temperature. According to the formulation in Table 3, slowly add component (B) to component (A) and stir and mix evenly at room temperature to prepare an emulsion polyacrylate pressure-sensitive adhesive. The adhesive is ready-to-use and has the best performance.

[0036] Coat the pressure-sensitive adhesive on the BOPP film with an RK wire bar coater, the thickness of the adhesive layer is about 35 μm, raise the temperature to 40°C to polymerize the monomer in component (B) for 30 minutes, and the thickness of the adhesive layer is about 25 μm after drying , Paste the silicone protective paper to get the pressure sensitive tape. Cut the pressure sensitive tape into a spline with a width of 25mm and a length of 200mm for...

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Abstract

A high water resistance emulsion polyacrylate pressure sensitive adhesive and a preparation method and application thereof relate to the field of acrylate pressure sensitive adhesive tapes. The emulsion polyacrylate pressure sensitive adhesive is characterized in that by weight, the pressure sensitive adhesive is formed by mixing a component (A) and a component (B). The component (A) is 92% to 97% of polyacrylate emulsion, and the component (B) is 3% to 8% of water-soluble monomer and free radical initiating agent. The prepared emulsion polyacrylate pressure sensitive adhesive is coated on the surface of a carrier to form an adhesive coating, the thickness of the adhesive coating ranges from 25mum to 50 mum, and the adhesive coating is in thermal polymerization for 30 minutes to 40 minutes at the reaction temperature of 30 DEG C to 50 DEG C, and is dried to obtain a pressure sensitive adhesive tape with the adhesive thickness ranging from 25mum to 35mum. The pressure sensitive adhesive tape prepared by the emulsion adhesive is good in each performance, simple in preparing process, free of pollution, low in cost and suitable for massive industrial production.

Description

technical field [0001] The invention relates to an emulsion type polyacrylate pressure-sensitive adhesive, an acrylic pressure-sensitive adhesive tape prepared by using the adhesive, and a preparation method of the adhesive and the adhesive tape. Background technique [0002] With the development of industry and technological progress, the quality of pressure-sensitive adhesives has been continuously improved, and the scope of use has become more and more extensive. In the past, the vast majority of pressure-sensitive adhesives were solvent-based pressure-sensitive adhesives. Considering factors such as environmental protection and resource conservation, water-based pressure-sensitive adhesives have gradually become water-based in recent years. Among them, emulsion-type polyacrylate pressure-sensitive adhesives have become one of the important development directions in this field. one. According to statistics, among all kinds of pressure-sensitive adhesives produced in my c...

Claims

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Application Information

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IPC IPC(8): C09J133/08C09J139/06C09J139/00C09J133/14C09J133/10C09J7/02
Inventor 王欢褚庭亮
Owner SHENZHEN YUTO PACKAGING TECH
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