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Lining-paper-free CPP cold-mounted film and preparation method therefor

A technology of cold laminating film and no backing paper, which is applied in the direction of film/flaky adhesives and adhesives, which can solve the problems of affecting the sticking effect of advertising inkjet pictures, destroying the viscosity of glue, and not being suitable for use on curved surfaces. Large-scale industrial production, improved production efficiency, and light unwinding force

Pending Publication Date: 2019-05-03
KAIPING QIYU ADHESIVE PROD TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, in order to increase the flexibility of the PVC film, a large amount of plasticizer needs to be added. The plasticizer will gradually seep out of the film over time, thereby polluting the environment. At the same time, it also destroys the viscosity of the glue and affects the effect on the advertising screen. The paste effect, while the EU REACH standard and the US California law both restrict the use of halogen-containing products and ban plasticizers such as DOP
On the other hand, due to the excellent flexibility of the PVC film with a large amount of plasticizer added, it is very suitable for advertising inkjet applied to curved surfaces. Generally, biaxially oriented polypropylene film (BOPP film), polyester film ( PET film), its ductility is not good, only suitable for flat film, not suitable for use on curved surfaces

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A kind of backing paper CPP cold lamination film, which is composed of a CPP base film layer with a thickness of 31 μm, an undercoat layer with a thickness of 5 μm and a water-based pressure-sensitive adhesive layer with a thickness of 8 μm from top to bottom, wherein the CPP base The film layer consists of a surface layer with a thickness of 3 μm, a skeleton layer with a thickness of 26 μm, and a bottom layer with a thickness of 2 μm. The surface layer is a propylene-ethylene-vinyl acetate terpolymer resin layer, and the skeleton layer is melted A high-melt index PP pellet layer with an index within the range of 3.5-3.8 g / 10min, and the bottom layer is a low-melt index PP pellet layer with a melt index within the range of 2.9-3.2 g / 10min.

[0027] Preparation:

[0028] 1) Dried propylene-ethylene-vinyl acetate terpolymer resin, high-melt index PP pellets with a melt index in the range of 3.5-3.8g / 10min, and high-melt-index PP pellets with a melt index in the range of 2...

Embodiment 2

[0033] A CPP cold lamination film without a backing paper, which is composed of a CPP base film layer with a thickness of 35 μm, an undercoat layer with a thickness of 1 μm and a water-based pressure-sensitive adhesive layer with a thickness of 12 μm from top to bottom, wherein the CPP base The film layer is composed of a surface layer with a thickness of 2 μm, a skeleton layer with a thickness of 30 μm and a bottom layer with a thickness of 3 μm. The surface layer is a propylene-ethylene-vinyl acetate terpolymer resin layer, and the skeleton layer is melted A high-melt index PP pellet layer with an index within the range of 3.5-3.8 g / 10min, and the bottom layer is a low-melt index PP pellet layer with a melt index within the range of 2.9-3.2 g / 10min.

[0034] Preparation:

[0035]1) Dried propylene-ethylene-vinyl acetate terpolymer resin, high-melt index PP pellets with a melt index in the range of 3.5-3.8g / 10min, and high-melt-index PP pellets with a melt index in the range ...

Embodiment 3

[0040] A kind of backing paper CPP cold lamination film, which is composed of a CPP base film layer with a thickness of 31 μm, an undercoat layer with a thickness of 5 μm and a water-based pressure-sensitive adhesive layer with a thickness of 8 μm from top to bottom, wherein the CPP base The film layer is composed from top to bottom of a framework layer with a thickness of 29 μm and a bottom layer with a thickness of 2 μm provided with an embossed layer on the upper surface. The framework layer is a high melt index within the range of 3.5 to 3.8 g / 10min The PP pellet layer, the bottom layer is a low melt index PP pellet layer with a melt index in the range of 2.9-3.2g / 10min.

[0041] Preparation:

[0042] 1) Place the dried high melt index PP pellets with a melt index in the range of 3.5 to 3.8g / 10min and the low melt index PP pellets with a melt index in the range of 2.9 to 3.2g / 10min in a double-layer co- In the two extruded dies, the temperature of the dies is controlled a...

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Abstract

The invention discloses a lining-paper-free CPP cold-mounted film. The lining-paper-free CPP cold-mounted film is composed of a CPP base film layer, a primer coating and an aqueous pressure-sensitiveadhesive layer from top to bottom, wherein the CPP base film layer has the tensile strength of 600g / 25mm to 1,200g / 25mm, the elongation at break not lower than 300% and an upper surface dyne value notgreater than 30. According to the lining-paper-free CPP cold-mounted film disclosed by the invention, a CPP film with excellent flexibility is adopted as a base film layer, and thus, the traditionalhalogen-containing PVC film is replaced; the aqueous pressure-sensitive adhesive layer is used, and thus, the lining-paper-free CPP cold-mounted film is environmentally friendly and is free of VOC emission; and the lining-paper-free CPP cold-mounted film is wound directly without release paper or a release film, the use is convenient, the wound length can reach 200 meters, i.e., 4 times that of the traditional product, the number of times of coil replacement is effectively reduced, continuous coating is facilitated, and the production efficiency is increased greatly. The invention further discloses a preparation method for the lining-paper-free CPP cold-mounted film. The operating process is high in controllability, large-scale industrial production is facilitated, and the lining-paper-free CPP cold-mounted film is particularly applicable to coating of curved surfaces.

Description

technical field [0001] The invention relates to the field of advertising inkjet protective films, in particular to a cold lamination film. Background technique [0002] At present, the traditional protective film for advertising spray painting at home and abroad is based on soft PVC film, coated with oily acrylic glue, covered with release paper or film, and rolled up, and the release paper (film) As an auxiliary material, it can only be thrown away as a waste product after being torn off, causing a large amount of release paper (film) to be discarded. The soft PVC film itself is a kind of non-environmental protection material because it contains halogen. In addition, in order to increase the flexibility of the PVC film, a large amount of plasticizer needs to be added. The plasticizer will gradually seep out of the film over time, thereby polluting the environment. At the same time, it also destroys the viscosity of the glue and affects the effect on the advertising screen....

Claims

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Application Information

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IPC IPC(8): C09J7/29
Inventor 罗吉尔列永潮杨军谭詠文陈启龙李晓鹏王微吴海波陈伟陈婉蓉王建华卢金水刘建峰
Owner KAIPING QIYU ADHESIVE PROD TECH