PET film with coating layer and high ink adhesive force and preparation method thereof

An adhesion and film technology, applied in coatings, polyester coatings, etc., to achieve the effects of strong ink adhesion, poor adhesion, and simple production process

Pending Publication Date: 2020-12-11
安徽省长荣新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to solve the problem of ink adhesion fastness during PET surface printing, and discloses a PET film with high ink adhesion and a preparation method thereof. The product of the present i

Method used

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  • PET film with coating layer and high ink adhesive force and preparation method thereof
  • PET film with coating layer and high ink adhesive force and preparation method thereof
  • PET film with coating layer and high ink adhesive force and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0029] A preparation method of a coated high ink adhesion PET film of the present invention comprises the following steps:

[0030] Step 1): configure the coating (that is, the aforementioned coating liquid);

[0031] Step 2): PET film casting treatment;

[0032] Step 3): coating;

[0033] Step 4): drying and curing;

[0034] Step 5): (PET film casting) non-coated surface corona treatment;

[0035] The coating solution prepared in step 1) includes the following parts by mass and a preparation process: distilled water (80-90 parts) is used as a solvent, and 7-20 parts of polymethyl methacrylate (PMMA) slurry, water-soluble, are added successively. 1-6 parts of copolyester, 2-10 parts of leveling agent, 3-10 parts of defoamer; stirring and mixing for 10-60 minutes;

[0036] Step 2): PET film casting treatment: After the PET film casting sheet is longitudinally stretched, in order to improve the uniformity of layer distribution, it is necessary to carry out corona treatment o...

Example Embodiment

[0046] Embodiment 1: The preparation method of this embodiment comprises the following steps:

[0047] Step 1): Configure the coating liquid:

[0048] Prepare the raw materials according to the following mass parts:

[0049] 85 parts of deionized water, 18 parts of polymethyl methacrylate (PMMA) slurry, 6 parts of water-soluble copolyester, 8 parts of leveling agent, and 8 parts of defoamer;

[0050] Mix deionized water, polymethyl methacrylate (PMMA) slurry, water-soluble copolyester, leveling agent and defoamer in turn, and stir for 10-60 min to form a uniformly dispersed coating solution;

[0051] Step 2): PET film casting process

[0052] The PET film cast sheet is longitudinally stretched, and the longitudinally stretched PET film cast sheet is subjected to corona treatment.

[0053] Step 3): coating: the coating solution obtained in step 1) is applied on-line on the corona surface of the PET cast sheet;

[0054] Further, the online coating method is gravure coating, an...

Example Embodiment

[0060] Embodiment 2: The preparation method of this embodiment is basically the same as that of Embodiment 1, and the difference lies in that the composition of the coating liquid is:

[0061] 80 parts of deionized water, 20 parts of polymethyl methacrylate (PMMA) slurry, 5 parts of water-soluble copolyester, 10 parts of leveling agent, and 10 parts of defoamer. The defoaming agent is 90-99% ethanol by volume. The leveling agent is an acrylate homopolymer.

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PUM

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Abstract

The invention relates to a PET film with a coating layer and high ink adhesive force and a preparation method thereof; the PET film comprises a PET film casting piece, corona layers are arranged on the inner and outer surfaces of the PET film casting piece, a coating liquid is uniformly arranged on the corona layer on one side surface of the inner and outer surfaces, and the coating liquid is cured to form a chemical treatment layer; the coating liquid comprises the following components in parts by mass: 80-90 parts of distilled water, 7-20 parts of polymethyl methacrylate (PMMA) slurry, 1-6 parts of water-soluble copolyester, 2-10 parts of a leveling agent and 3-10 parts of a defoamer. According to the product, the binding force is increased through the chemical coating layer instead of surface tension, and thus the phenomenon that the binding force of the ink is reduced due to corona attenuation can be avoided. The preparation method disclosed by the invention is a manufacturing method of the coating polyester film capable of enhancing the UV printing binding force.

Description

technical field [0001] The invention relates to the field of printing, in particular to a coated PET film with high ink adhesion and a preparation method thereof. Background technique [0002] With the continuous change of packaging requirements, many food and pharmaceutical packaging require that the QR code be printed directly on the outer layer of the packaging. This new type of packaging requires not only changing the traditional single-sided printing to double-sided printing, but also the outer printing part without any composite protective layer. Therefore, one side of the product (PET film) is required to ensure the original ink binding force for compounding; the other side is used for surface printing, which requires a high binding force with the ink to ensure that the ink does not fall off during use, while ordinary single-sided PET films with corona or double-sided corona cannot meet the requirements of use. [0003] Based on the above packaging requirements, in ...

Claims

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Application Information

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IPC IPC(8): C08J7/043C09D133/12C09D167/02C08L67/02
CPCC08J7/043C08J7/0427C09D133/12C08J2367/02C08L67/02
Inventor 惠振京石亚东
Owner 安徽省长荣新材料科技有限公司
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