PET embossed release film for rubber isolation

A release film and embossing technology, which is applied in the field of release film to isolate rubber semi-finished products, can solve the problems of rubber injection molding, large heat shrinkage deformation rate, and large surface tension, so as to reduce energy consumption and pollution, and reduce production Low cost and good tear resistance

Inactive Publication Date: 2016-09-14
无锡市新久科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Most of the release films used to isolate rubber semi-finished products in the prior art are disposable polyethylene films. Although they are cheap, they have low tensile strength, large thermal shrinkage deformation rate, small impact strength, poor dimensional stability, and are easy to Tear, high surface tension, not easy to peel off, poor freshness preservation of tire injection rubber and can only be used once, which virtually increases production costs and energy consumption
[0003] The silicone oil on the surface of the existing PET release film is relatively smooth because the PET surface is relatively smooth. Basically, it has no release effect after one or two uses, and this peeled off silicone oil has a serious impact on the injection molding of rubber. Cannot achieve the effect of isolation and dustproof

Method used

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  • PET embossed release film for rubber isolation
  • PET embossed release film for rubber isolation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Example 1 as figure 1 As shown, the PET layer 1 is made of a PET film with a thickness of 250 μm, and the PE coating layer 2 is arranged on the upper and lower surfaces of the PET layer. The thickness of each layer of the PE coating layer 2 is 0.038±0.008mm. The surface of layer 2 is provided with a grid-like embossed pattern, of course, the embossed pattern can also be in other shapes, and this does not limit the present invention. This is a single-layer PET embossed release film for rubber isolation. .

Embodiment 2

[0012] Example 2 as figure 2 As shown, a PET film with a thickness of 100 μm is used to make two PET layers 1, and one of the surfaces of each PET layer 1 is provided with a PE coating layer 2, and the thickness of each PE coating layer 2 is 0.038±0.008mm. Set a grid-like embossed pattern on the surface of the PE coating layer 2, and then compound the two PET layers with PET composite glue. When compounding, keep the PE coating layer 2 respectively located on the upper and lower outer surfaces of the release film. , This structure is a double-layer PET embossed release film for rubber isolation.

Embodiment 3

[0013] The structure of embodiment 3 is basically the same as that of embodiment 2, the difference is that a layer of PET is added between the PET layers to increase the overall strength and toughness of the release film.

[0014] The PET embossed release film for rubber isolation of the present invention adopts the structure of setting a PE coating layer on the PET, which increases the impact strength of the release film, is not easy to tear, and has a small thermal shrinkage deformation rate, so it can be used repeatedly. And the PE coating has good corrosion resistance characteristics, and the embossed texture is set on the PE coating, which can keep the surface of the release film and the rubber surface with good air permeability and easy to peel off.

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Abstract

Relating to the technical field of release films, the invention discloses a PET embossed release film for rubber isolation. The PET embossed release film comprises two PE layers and a plurality of PET layers, one PE layer is laminated on the upper surface of a topmost PET layer, and the other PE layer is laminated on the lower surface of a lowest PET layer, the upper surface of the upper PE layer and the lower surface of the lower PE layer are provided with embossed patterns, the thickness of each PE layer is less than 0.038+ / -0.008mm, the thickness of each PET layer can be determined according to the total thickness of a client. By adopting the structure with the PE lamination layers arranged on the PET, the release film has increased impact strength, is difficult to tear, and has small thermal shrinkage deformation rate, thus being reusable. And the PE laminated film has good corrosion resistance, by disposing the embossed patterns on the PE laminated films, the release film surface and a rubber surface can maintain good ventilation and the release film is easily peelable.

Description

technical field [0001] The invention relates to the technical field of release films, in particular to a release film for isolating rubber semi-finished products. Background technique [0002] Most of the release films used to isolate rubber semi-finished products in the prior art are disposable polyethylene films. Although they are cheap, they have low tensile strength, large thermal shrinkage deformation rate, small impact strength, poor dimensional stability, and are prone to damage. Tear, high surface tension, not easy to peel off, poor freshness preservation of tire injection rubber and can only be used once, which virtually increases production costs and energy consumption. [0003] The silicone oil on the surface of the existing PET release film is relatively smooth because the PET surface is relatively smooth. Basically, it has no release effect after one or two uses, and the peeled silicone oil has a serious impact on the injection molding of rubber. The effect of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/08B32B27/32B32B27/36
CPCB32B27/08B32B27/32B32B27/36B32B2250/246
Inventor 徐新玉
Owner 无锡市新久科技有限公司
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