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Aqueous binder emulsion for pre-coating and thermally laminating PET film and preparation method thereof

A water-based adhesive and adhesive technology, applied in the direction of film/sheet adhesive, adhesive type, ester copolymer adhesive, etc., can solve the problem of low bond strength and difficulty in obtaining gloss Transparency crystal album products and other issues, to achieve the effect of small particle size, solve the difficult balance between stain resistance and low temperature flexibility

Active Publication Date: 2014-07-23
ANHUI DEPU POLYMER MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the coating products of the prior art cannot level well on the PET film, the bond strength of the coating formed on the PET film is low, and avoid the generation of pinholes or blisters, it is difficult to obtain a high gloss coating. High degree, ideal transparency, pinhole-free crystal photo album products

Method used

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  • Aqueous binder emulsion for pre-coating and thermally laminating PET film and preparation method thereof
  • Aqueous binder emulsion for pre-coating and thermally laminating PET film and preparation method thereof
  • Aqueous binder emulsion for pre-coating and thermally laminating PET film and preparation method thereof

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Experimental program
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Effect test

Embodiment

[0100] Ⅰ Preparation of seed emulsion

[0101] (1) Pre-emulsification Add metered deionized water into a 5000ml three-neck flask, start stirring, add metered emulsifier, start adding metered monomer after 15 minutes, continue high-speed stirring and emulsification for about 1 hour;

[0102] (2) Polymerization Add deionized water to a 1000ml four-neck flask equipped with stirring, reflux condenser, thermometer and constant pressure dropping funnel, start stirring, and when the temperature rises to 82°C, add the measured bottom emulsifier for 5 minutes Then add the measured initiator aqueous solution, and after the temperature reaches the highest and stabilize for 2 minutes, start to add the pre-emulsion solution and the initiator aqueous solution dropwise. During the dropping, the temperature is controlled at 86-88°C, and the total dropping time is controlled at 90°C. ~100 minutes; keep warm for 1h after the dropwise addition;

[0103] (3) Cool down to below 40°C and add measu...

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Abstract

The invention provides an aqueous binder emulsion for pre-coating and thermally laminating a PET film for a crystal album, and a preparation method of the aqueous binder emulsion. The aqueous binder emulsion is characterized in that seed emulsion containing styrene (St), methyl methacrylate (MMA) and ethyl acrylate (EA) of which the hydrophily is mild and the number-average diameter is less than 50nm is adopted; styrene (St), butyl acrylate (BA), acrylic acid (AA), hydroxyethyl acrylate (HEA), and 2-ethyl hexyl acrylate (EHA) are copolymerized with crosslinking monomer, namely, diacetone-acryloamide or vinyl urea monomer in the presence of proper amount of emulsifying agent and multifunctional additive or surface active agent, so as to obtain the aqueous binder emulsion. The binder is transferred and coated on the PET polyester film, and then dried through a drying channel and combined with a PE film, and finally a user removes the PE film and laminates the PET film with the hot pre-coating binder to a photo album.

Description

technical field [0001] The invention relates to a PET film pre-coated heat-mounted water-based adhesive emulsion for crystal albums and a preparation method thereof, belonging to the field of printing and packaging. Background technique [0002] Solvent-based coating adhesives are easy to achieve uniform coating on plastic films, such as PET, PE, BOPP films, due to their low surface tension and no foaming of emulsifiers, and the latent heat of evaporation of organic solvents is extremely low, The volatilization speed is fast, so at present, the production of indoor and outdoor advertisements and various photo albums has been using solvent-based adhesives as pre-coated thermal labeling adhesives, with an annual consumption of 100,000 tons. The area has emerged, and environmental pressure has brought unprecedented challenges to the printing and packaging industry. In 2011, the country has banned the production of solvent adhesives without a production license, and its original...

Claims

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Application Information

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IPC IPC(8): C08F220/14C08F212/08C08F220/18C08F220/06C08F220/28C08F228/02C08F220/58C08F2/26C09J133/08C09J7/02
Inventor 孙家胜徐文宝
Owner ANHUI DEPU POLYMER MATERIAL
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