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Primer coating and preparation method thereof, and polyester film and preparation method thereof

A technology of polyester film and primer, which is applied in the direction of coating, primer, polyurea/polyurethane coating, etc., can solve the problem of low ink layer adhesion, and achieve continuous production, good adhesion performance, and adhesion excellent effect

Active Publication Date: 2018-07-06
NINGBO EXCITON TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the problem that the polyester film coated with the primer layer has low adhesion to the ink layer after being placed at normal temperature and humidity, the invention provides a primer and a preparation method thereof, a polyester film Ester film and preparation method thereof

Method used

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  • Primer coating and preparation method thereof, and polyester film and preparation method thereof
  • Primer coating and preparation method thereof, and polyester film and preparation method thereof
  • Primer coating and preparation method thereof, and polyester film and preparation method thereof

Examples

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preparation example Construction

[0072] The preparation method of primer provided by the invention may further comprise the steps:

[0073] (1) Add the amine-functionalized acrylic copolymer and epoxy resin into a glass beaker with a certain mass of solvent according to the proportion, and stir it electrically for 1 hour to form a uniformly mixed solution;

[0074] (2) Add the olefin-acrylonitrile copolymer, polyester polyol, and polycyclic heteroatom compound to the solution obtained in step (1) according to the proportioning ratio, and dilute with a solvent to obtain a uniformly mixed solution;

[0075] (3) Add additives and catalysts into the solution obtained in step (2) according to the proportioning ratio, and configure it as a primer.

[0076] The preparation method of polyester film provided by the invention may further comprise the steps:

[0077] (1) Evenly coat the uniformly mixed primer on the surface of the PET film using a specific wire bar coater;

[0078] (2) the PET film coated with primer ...

Embodiment 1

[0090] Primer formulation in embodiment 1 is as shown in table 1, wherein:

[0091] The amine-functionalized acrylic copolymer is primary amine-functionalized polyacrylic acid-methyl acrylate copolymer; the olefin-acrylonitrile copolymer is polyethylene-acrylonitrile copolymer with a number average molecular weight of 12000; the epoxy resin is bisphenol A- Epoxy polycondensate; polyester polyol is polycarbonate-1,6-hexanediol; polycyclic heteroatom compound is ethylene oxide; additive is 2-hydroxy-2-methyl-1-benzene Base-1-acetone, diphenylmethane diisocyanate, the weight ratio of the two is 0.05:99.95; the catalyst is dibutyltin dilaurate; the solvent is ethyl acetate.

[0092] The performance test results of primer and polyester film are shown in Table 2, and the thickness of polyester film is shown in Table 3.

Embodiment 2

[0094] Primer formulation in embodiment 2 is as shown in table 1, wherein:

[0095] The amine-functionalized acrylic copolymer is a tertiary amine-functionalized polymethyl acrylate-ethyl acrylate copolymer; the olefin-acrylonitrile copolymer is a polyvinyl chloride-acrylonitrile copolymer with a number average molecular weight of 7000; the epoxy resin is a resin Cyclic epoxy resin; polyester polyol is polyε-caprolactone diol; polycyclic heteroatom compound is propylene oxide; additive is 2,4,6,-trimethylbenzoylphosphonic acid ethyl ester And diphenylmethane diisocyanate, the weight ratio of the two is 0.05:99.95; the catalyst is triethylamine; the solvent is ethyl acetate.

[0096] The performance test results of primer and polyester film are shown in Table 2, and the thickness of polyester film is shown in Table 3.

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Abstract

The invention relates to primer coatings, specifically to a primer coating and a preparation method thereof, and a polyester film and a preparation method thereof. In order to solve the problem of lowadhesion force between a polyester film coated with a primer coating layer and a post-coated ink layer after placement at normal temperature and normal humidity, the invention provides the primer coating and the preparation method thereof, and the polyester film and the preparation method thereof. The primer coating comprises an amine functionalized acrylic copolymer, an olefin-acrylonitrile copolymer, epoxy resin, polyester polyol, a polycyclic heteroatomic compound, an auxiliary agent, a catalyst and a solvent. The primer coating provided by the invention forms a primer coating layer aftercoating with the polyester film, and the adhesion force between the primer coating layer and a polyester film layer can reach 0 grade without the need of standing and curing, so subsequent continuousproduction is realized; meanwhile, the polyester film coated with the primer coating layer can be stored and placed at normal temperature and normal humidity, and when UV ink is coated again, good adhesion performance between an ink layer and the primer coating layer can be still maintained.

Description

technical field [0001] The invention relates to a primer, in particular to a primer and a preparation method thereof, a polyester film and a preparation method thereof. Background technique [0002] Polyester film is made of polyethylene terephthalate polymer pellets and various additives through melting, extrusion, and then through transverse and longitudinal stretching processes to obtain transparent polyester films with different thicknesses. Ester film has a series of characteristics such as excellent transparency, flexibility, ductility and certain high and low temperature resistance. It is widely used in screen printing packaging, medical treatment, ink spraying and other fields. Especially in recent years, with the vigorous improvement of national consumption , with the continuous development of the logistics industry, the demand for polyester film used for packaging objects has increased, and the outer surface of the polyester film needs to be printed with ink, but d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D175/06C08J7/04C08J7/12C08L67/02
CPCC08J7/04C08J7/123C08J2367/02C08J2475/04C08J2475/06C09D5/002C09D175/04C09D175/06
Inventor 李刚余洋张毅顾春红叶群宋庆欢薛永富张彦唐海江
Owner NINGBO EXCITON TECH
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