Adhesive for die-cutting pressure-sensitive film and preparation method thereof

A die-cutting pressure-sensitive and adhesive technology, applied in the direction of film/sheet-like adhesives, adhesives, adhesive types, etc., can solve the problems of poor aging resistance, die-cutting and drawing degumming, and non-environmental protection, achieving comprehensive Good performance, improve cohesive strength, improve the effect of sticking force

Inactive Publication Date: 2011-12-07
永大(中山)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Commonly used pressure-sensitive adhesives include hot-melt pressure-sensitive adhesives, solvent-based pressure-sensitive adhesives, emulsion-type pressure-sensitive adhesives, rubber-type pressure-sensitive adhesives, etc., but there is a problem that die-cutting occurs to varying degrees during die-cutting. Wire drawing degumming phenomenon, if there is wire drawing degumming phenomenon, it will inevitably cause difficulty in waste discharge
At the same time, rubber-type and hot-melt adhesives have the problem of poor aging resistance and the formula is not easy to adjust, and solvent-based adhesives are costly and not environmentally friendly
In order to overcome the difficulty of waste discharge caused by wire drawing degumming, although equipment such as knives and raw material screening such as film tensile properties can be improved, the effect of the improvement is not obvious

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: (1) add 33g deionized water, 0.07g buffering agent in the clean heating reactor that stirring system and condensing system are housed, buffering agent is sodium bicarbonate, sodium phosphate, dipotassium hydrogen phosphate, hydrogen sulfate any of the sodium, and warm up for later use. (2) Add 15.8g deionized water, 40g butyl acrylate, 0.6g acrylic acid, 1.5g hydroxyethyl acrylate, 4.7g methyl methacrylate and other mixed monomers and 0.16g nonyl to the emulsification tank Phenol polyoxyethylene ether, 0.3 gram of disodium alkyl diphenyl ether sulfonate, then add 0.02 gram of dodecyl mercaptan, stir at high speed and fully emulsify the raw materials for subsequent use to form a pre-emulsion; (3) add 3.75 grams 0.072 grams of ammonium persulfate in the titration tank, stirring and dissolving for subsequent use; (4) when the temperature of the main reaction tank reached 73°C-78°C, add 4.5% of the pre-emulsion prepared in the step (2), when the temperature st...

Embodiment 2

[0027] Embodiment 2: (1) add 28.4g deionized water, 0.07g buffering agent in the clean heating reactor that stirring system and condensing system are housed, and warm up standby; (2) add 13.5g deionized in emulsification tank Water, 47.7 grams of butyl acrylate, 0.55 grams of acrylic acid, 1.16 grams of hydroxyethyl acrylate, 4.69 grams of mixed monomers such as methyl methacrylate and 0.16 grams of nonylphenol ethoxylates, 0.31 grams of alkyl Disodium diphenyl ether sulfonate, then add 0.02 gram of dodecyl mercaptan, stir at a high speed and make the raw material fully emulsified for subsequent use, form a pre-emulsion; (3) add 3.2 gram of water in the titration tank, 0.072 gram of persulfuric acid Ammonium, stirred and dissolved for later use; (4) When the temperature of the main reaction tank reaches 73°C-78°C, add 4.5% of the pre-emulsion prepared in the step (2), and when the temperature is stable at 72-74°C, dissolve the pre-emulsion with water Add ammonium persulfate in...

Embodiment 3

[0028] Embodiment 3: (1) add 24.5g deionized water, 0.07g buffering agent in the clean heating reactor that is equipped with stirring system and condensation system, and warm up standby; (2) add 11.7g deionized in emulsification tank Water, 54g of butyl acrylate, 0.55g of acrylic acid, 1.16g of hydroxyethyl acrylate, 4.5g of mixed monomers such as methyl methacrylate and 0.16g of nonylphenol polyoxyethylene ether, 0.31g of dodecane sodium base sulfate, then add 0.02 grams of dodecyl mercaptan, stir at high speed and make the raw materials fully emulsified for subsequent use, forming a pre-emulsion; (3) add 2.8 grams of water in the titration tank, 0.072 grams of ammonium persulfate, stir to dissolve Standby; (4) Add 4.5% of the pre-emulsion prepared in step (2) when the temperature of the main reaction tank reaches 73°C-78°C, and when the temperature is stable at 72-74°C, add ammonium persulfate dissolved in water in advance In the reaction kettle, when the temperature is stab...

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PUM

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Abstract

The invention discloses an adhesive for die-cutting pressure-sensitive film, which is characterized in that it includes components and a post-treatment agent, and the components include butyl acrylate, acrylic acid, hydroxyethyl acrylate, methyl methacrylate Ester, anionic emulsifier, nonionic emulsifier, buffering agent, initiator, chain transfer agent, deionized water; wherein, the proportion of each component in the component is (by weight): butyl acrylate 40%~ 54%, acrylic acid 0.4%~0.6%, hydroxyethyl acrylate 0.5%~2%, methyl methacrylate 3%~6%, anionic emulsifier 0.27%~0.4%, nonionic emulsifier 0.1%~0.2% , buffering agent 0.05% ~ 0.08%, initiator 0.2% ~ 0.5%, chain transfer agent 0.005% ~ 0.02%, deionized water 39% ~ 53%, post-treatment agent is ammonia water with a concentration of 10% ~ 36%, the amount In order to adjust the pH of the adhesive to 6-8. It also relates to a preparation method of the adhesive. The adhesive of the invention does not come off during die-cutting, has good adhesive performance and aging resistance, and has no pollution to the environment.

Description

technical field [0001] The invention relates to an adhesive used on a die-cutting pressure-sensitive film, which is an emulsion pressure-sensitive adhesive used on a film pressure-sensitive film, and also relates to a preparation method of the adhesive, which belongs to the field of pressure-sensitive adhesives. Background technique [0002] At present, there are many manufacturers producing label stickers, and they usually use various pressure-sensitive adhesives to apply to different substrates, such as coated paper, PET film, etc., and then apply a layer of release paper coated with a release agent. Various trademark patterns are printed on the coated paper or film and the pattern has a certain shape. After die-cutting on the die-cutting machine, a separate pattern is formed. The waste between the patterns needs to be removed in time and conveniently. Commonly used pressure-sensitive adhesives include hot-melt pressure-sensitive adhesives, solvent-based pressure-sensitive...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J133/08C09J7/02
Inventor 梁伟何汉健邹文忠
Owner 永大(中山)有限公司
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