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Biologically degradable pre-coating film

A biodegradable, pre-coating film technology, applied in the direction of film/sheet-like adhesives, adhesives, etc., can solve the problem of non-degradable films

Inactive Publication Date: 2012-07-04
KANGDE XIN COMPOSITE MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the current pre-coating film substrates are mainly polyolefin films. Most of these films are non-degradable. From a long-term perspective, they are destructive to the environment. At present, the world's developed countries and the scientific and technological circles have unanimously advocated the use of environmentally friendly, non-toxic, non-polluting, and eventually degradable CO 2 and H 2 O's fully biodegradable film replaces the existing plastic packaging film

Method used

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Examples

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Effect test

Embodiment 1

[0021] Example 1: Glossy pre-coated film

[0022] Substrate 1 is prepared in advance. Substrate 1 is a glossy cellulose acetate film (clarifol, UK) with a thickness of 17 microns.

[0023] see figure 1 . The biodegradable precoat film has a width of 1235mm. The base material (1), the middle layer (2) and the hot melt adhesive layer (3) have the same width. The biodegradable precoat film has three layers, the first layer is a base material (1), the second layer is an intermediate layer (2), and the third layer is a hot melt adhesive layer (3). The substrate (1) is a cellulose acetate film with a width of 1255 mm. The middle layer (2) is polyethyleneimine (PEI, Dainippon Ink Company, EP-108), and the hot-melt adhesive layer (3) is ethylene-vinyl acetate (EVA) hot-melt adhesive (Thailand TPI Company, SV1040). Using a composite production line composed of an extruder and a hot-melt adhesive composite machine (Guangdong Huilong Plastic Machinery, EXC1700 / 90S-F-2), the interme...

Embodiment 2

[0025] Example 2: Matt precoat film

[0026] Substrate 1 is prepared in advance. Substrate 1 is a cellulose acetate matte film (clarifol, UK) with a thickness of 21 microns.

[0027] The biodegradable precoat film has a width of 1235mm. The base material (1), the middle layer (2) and the hot melt adhesive layer (3) have the same width. The biodegradable precoat film has three layers, the first layer is a base material (1), the second layer is an intermediate layer (2), and the third layer is a hot melt adhesive layer (3). The substrate (1) is a cellulose acetate film with a width of 1255 mm. The middle layer (2) is polyethyleneimine (PEI, Dainippon Ink Company, EP-108), and the hot-melt adhesive layer (3) is ethylene-vinyl acetate (EVA) hot-melt adhesive (Thailand TPI Company, SV1040). The middle layer (2) is evenly coated on the surface of the substrate (1), and the coating amount is 0.011g / m 2 , on the surface of the middle layer (2) uniformly compound a layer of hot me...

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Abstract

The invention relates to a biologically degradable pre-coating film, which comprises a substrate, an intermediate layer and a hot melt adhesive layer. The intermediate layer is arranged between the substrate and the hot melt adhesive layer, the substrate is a cellulose acetate film, the intermediate layer is made of polyethylenimine, and the hot melt adhesive layer is made of ethylene-vinyl acetate hot melt adhesive. The thickness of the substrate is 12-25 microns, the thickness of the intermediate layer is 0.01-0.03 micron, and the thickness of the hot melt adhesive layer is 12-40 microns. Since the cellulose acetate film is biologically degradable, the biologically degradable pre-coating film can be completely decomposed into CO2 and H2O under effects of microorganisms in the nature, such as bacteria, fungi and algae, and can also be used with waste paper into a pulp forming procedure to produce recycled paper. Therefore, the film is an environmentally friendly green plastic packaging material.

Description

technical field [0001] The invention relates to the technical field of film printing and packaging, in particular to a biodegradable precoat film. Background technique [0002] The pre-coated film refers to the plastic film coated with hot melt adhesive in advance. When a certain temperature and pressure are used, the pre-coated film and the printed matter can be directly hot-compressed and laminated. The pre-coating film technology is currently the most advanced film coating process in China. It is an environmentally friendly and clean technology. The pre-coating film production saves the process of adhesive preparation, coating and drying. The entire film coating process can be done in It can be completed in a few seconds, and can realize high-speed, high-efficiency, and high-quality lamination. It can be said that the pre-coating film technology has achieved comprehensive indicators of environmental protection, health protection, safe production, and improved production ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/02C09J123/08
Inventor 钟玉
Owner KANGDE XIN COMPOSITE MATERIAL CO LTD
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