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Polypropylene film for cold mounting composite film, preparation method of polypropylene film and cold mounting composite film

A polypropylene film and composite film technology, applied in chemical instruments and methods, applications, household appliances, etc., can solve problems such as unfavorable lamination of films and printed parts, large unwinding force, and numerous processes

Pending Publication Date: 2022-04-12
GUANGDONG DECRO PACKAGE FILMS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, PVC cold lamination film also has the following disadvantages: ① Due to the high surface tension (33-38mN / m) of PVC cold lamination film, it generally needs to be attached to the release liner. The printing patterns are compounded, causing a lot of loss of release liner paper
②The general process of release liner paper is to spray polyethylene (PE) material on the paper, and then apply silicone by coating. Not only the process is complicated, but also the release liner paper cannot be recycled according to ordinary paper
③ Coating silicone will also produce a large amount of organic solvent (VOC) emissions, polluting the air environment
④Although the surface tension of silicone is 20-22mN / m, silicone polymers are often difficult to cure completely, resulting in the presence of more small molecular silicones on the surface, which will transfer to the glue through the adhesion of the glue surface, thus affecting the viscosity of the glue
However, the surface tension of polypropylene material is still relatively high. Compared with the surface tension of silicone in release liner paper, which is only 20-22mN / m, the unwinding force of polypropylene film is obviously too high, which makes it difficult to unwind, which is not conducive to Film and print lamination

Method used

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  • Polypropylene film for cold mounting composite film, preparation method of polypropylene film and cold mounting composite film
  • Polypropylene film for cold mounting composite film, preparation method of polypropylene film and cold mounting composite film
  • Polypropylene film for cold mounting composite film, preparation method of polypropylene film and cold mounting composite film

Examples

Experimental program
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Effect test

Embodiment 1

[0047] The polypropylene film of the cold lamination composite film of this embodiment, please refer to figure 1 , including a first surface layer 1, a core layer 2 and a second surface layer 3 arranged in sequence.

[0048] The first surface layer 1 is: 100wt% polymethylpentene copolymer (melt index is 4.6g / 10min, melt index test conditions: melting temperature is 230°C, load weight is 2.16kg);

[0049] Core layer 2 is: 99.8wt% homopolypropylene (98% isotacticity, melt index is 3g / 10min, melt index test conditions: melting temperature is 230°C, load weight is 2.16kg), 0.2wt% monohard fatty acid glycerides;

[0050] The second surface layer 3 is: 99.8wt% homopolypropylene (98% isotacticity, melt index is 3g / 10min, melt index test conditions: melting temperature is 230°C, load weight is 2.16kg), 0.2wt% Silicon oxide (particle size is 5 μm);

[0051] The total thickness of the prepared product is 23 μm, the thickness of the first skin layer 1 is 1 μm, the thickness of the cor...

Embodiment 2

[0056] The polypropylene film of the cold lamination composite film of this embodiment, please refer to figure 1 , including a first surface layer 1, a core layer 2 and a second surface layer 3 arranged in sequence.

[0057] The first surface layer 1 is: 80wt% polymethylpentene copolymer (melt index is 4.6g / 10min, melt index test conditions: melting temperature is 230°C, load weight is 2.16kg), 20wt% methylpentene-propylene Copolymer (melt index is 10g / 10min, melt index test conditions: melting temperature is 230°C, load weight is 2.16kg);

[0058] Core layer 2 is: 99.8wt% homopolypropylene (96% isotacticity, melt index is 2.8g / 10min, melt index test conditions: melting temperature is 230°C, load weight is 2.16kg), 0.2wt% oil acid amide;

[0059] The second surface layer 3 is: 99.8wt% homopolypropylene (the isotacticity is 96%, the melt index test conditions: the melt index is 3g / 10min, the melting temperature is 230°C, and the load weight is 2.16kg), 0.2wt% Polymethyl meth...

Embodiment 3

[0064] The polypropylene film for cold lamination composite film of present embodiment, the polypropylene film for cold lamination composite film of present embodiment, please refer to figure 2 , including a first surface layer 1, an adhesive layer 4, a core layer 2 and a second surface layer 3 arranged in sequence.

[0065] The first surface layer 1 is: 100wt% polymethylpentene copolymer (melt index is 4.6g / 10min, melt index test conditions: melting temperature is 230°C, load weight is 2.16kg);

[0066] Adhesive layer 4 is: 100wt% methylpentene-propylene copolymer (melt index is 10g / 10min, melt index test conditions: melting temperature is 230°C, load weight is 2.16kg);

[0067] Core layer 2 is: 99.8wt% homopolypropylene (98% isotacticity, melt index is 3g / 10min, melt index test conditions: melting temperature is 230°C, load weight is 2.16kg), 0.2wt% monohard fatty acid glycerides;

[0068] The second surface layer 3 is: 99.8wt% homopolypropylene (98% isotacticity, melt in...

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Abstract

The invention relates to a polypropylene film for a cold mounting composite film, a preparation method of the polypropylene film and the cold mounting composite film. The polypropylene film for the cold laminating composite film comprises a first surface layer, a core layer and a second surface layer which are sequentially arranged, the first surface layer comprises a polymethylpentene copolymer, the polymethylpentene copolymer is an olefin copolymer based on 4-methyl-1-pentene, the content of 4-methyl-1-pentene is 95-100 wt%, and the content of 4-methyl-1-pentene is 20-30 wt%. The surface tension of the first surface layer is less than 29mN / m, and the surface of the second surface layer is subjected to corona or flame treatment. The invention further provides a preparation method of the polypropylene film for the cold mounting composite film and the cold mounting composite film. The polypropylene film for the cold mounting composite film is easy to unroll, the preparation method is simple, and the prepared cold mounting composite film does not need release backing paper and is easy to unroll.

Description

technical field [0001] The invention relates to the field of film lamination in the printing industry, in particular to a polypropylene film for cold lamination composite film, a preparation method thereof and a cold lamination composite film. Background technique [0002] In order to protect the printed pattern, the printing industry generally mounts a film on the printed matter. Mounting film is widely used in labels, wedding photos, oil painting production, calligraphy and painting, outdoor posters, advertisements, various pictures, documents, etc. The mounting film process can not only increase the picture quality of printed parts, but also protect the picture, scratch-resistant and water-resistant role. [0003] The printing industry mostly adopts polyvinyl chloride (PVC) cold lamination film, and the PVC cold lamination film structure includes a PVC base film layer and a glue layer arranged in sequence. However, PVC cold lamination film also has the following disadva...

Claims

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Application Information

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IPC IPC(8): B32B27/08B32B27/32B32B27/18B32B7/12B32B33/00C08L23/20C08L23/12C08K3/36C08J5/18C08L33/12B29D7/01
Inventor 胡卓荣乔胜琦徐文树何文俊
Owner GUANGDONG DECRO PACKAGE FILMS
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