Easy-to-peel cover film

An easy-to-tear and easy-to-peel technology, which is applied in the direction of closing, packaging, and layered products, can solve the problems of uneven back cover film, poor anti-pollution heat sealing effect of heat-sealing layer materials, and poor sensory perception of product packaging. Achieve the effects of improved stress crack resistance, excellent anti-pollution heat sealing performance, and improved flexibility

Inactive Publication Date: 2012-03-21
SUZHOU HAISHUN PACKAGING MATERIAL
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  • Claims
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AI Technical Summary

Problems solved by technology

[0005] 3. The anti-pollution heat-sealing effect of the heat-sealing layer material is poor, resulting in serious leakage of liquid and ai

Method used

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Embodiment Construction

[0022] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0023] see figure 1 As shown, a new type of easy-peeling cover film, which includes a five-layer structure of heat-sealing layer 1, easy-peeling layer 2, barrier layer 3, adhesive layer 4 and weather-resistant layer 5 arranged in sequence.

[0024] Further, the addition amount of the low-density polyethylene and metallocene low-density polyethylene in the heat-sealing layer 1 multi-layer co-extruded ethylene-vinyl acetate co-extruded film layer accounts for 30% to 40% of the total weight.

[0025] Further, the low-density polyethylene in the easy-peelable layer 2 is a coated polyethylene obtained by extrusion compounding; the temperature of the resin during extrusion compounding cannot exceed 280°C.

[0026] Further, the barrier layer 3 is a soft aluminum foil, and the thickness of the aluminum foil is between 7 microns and 3...

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Abstract

The invention discloses an easy-to-peel cover film, which comprises a hot sealing layer, an easy-to-peel layer, a blocking layer, a bonding layer and a weatherproof layer in sequence arrangement, wherein the hot sealing layer is an ethylene-vinyl acetate copolymer film layer modified by low-density polyethylene and metallocene low-density polyethylene, the easy-to-peel layer is a low-density polyethylene layer, the blocking layer is a soft-state aluminum foil layer, the bonding layer is a polyester type polyurethane layer, and the weatherproof layer is a polyester layer. The easy-to-peel cover film is an easy-to-peel cover film with the advantages that the integral performance is excellent, the easy-to-peel cover film is particularly suitable for various containers, and the easy-to-peel performance, the sealing performance and the ventilation performance are better.

Description

technical field [0001] The invention relates to the field of packaging lids, in particular to an easy-tear lid film, which is a plastic film that is hot-melt-encapsulated on a plastic container and covers the opening of the plastic container. Background technique [0002] At present, there is a kind of plastic film that is packaged on the opening of the plastic container and is easily peeled off. After the outer layer of aluminum-plastic film is peeled off, the inner heat-sealing layer is still completely welded on the plastic container, and the substances in the container emit The gas can effectively enter the ambient air through the heat-sealing film to achieve the purpose of treatment or environmental improvement. The general easy-to-tear films currently on the market generally have the following defects: [0003] 1. The bonding strength between the barrier layer and the inner heat-sealing layer is too high, and it is not easy to peel off; [0004] 2. The material of th...

Claims

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Application Information

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IPC IPC(8): B32B15/085B32B27/08B32B27/28B32B27/36B65D53/08
Inventor 李俊林武辉
Owner SUZHOU HAISHUN PACKAGING MATERIAL
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