Easily-stripped film

An easy-peeling, thin-film technology, applied in the field of packaging materials, can solve the secondary pollution of medical equipment, easy to produce wire drawing, debris and other problems

Inactive Publication Date: 2010-10-13
美迪科(上海)包装材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, there are strict requirements for medical and food packaging bags, that is, the seal of the packaging bag must have a certain strength, the peeled part should turn white when peeled off, the peeled surface should be smo

Method used

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Examples

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Embodiment Construction

[0007] Provide the embodiment of the present invention and manufacturing process and effect below.

[0008] An easy-peeling film of the present invention is co-extruded from a composite layer, an intermediate layer, and a heat-sealing layer. And the material ratio (by weight percentage) is as follows: composite layer 15μm, polyethylene (Q281) 65%, polyethylene (2420H) 35%; middle layer 15μm, polyethylene (2426H) 50%, polyethylene (2420H) 50% %; heat seal layer 20μm, polyethylene (Q281) 65%, polybutene (PB-1) 20%, polyethylene (SP1510) 15%.

[0009] Manufacturing process of the present invention is as follows:

[0010] 1. Process flow:

[0011] a. Fully mix the plastic particles listed in the formula according to the ratio;

[0012] b. Add the mixed particles into the corresponding extruder hopper respectively;

[0013] c. Set the temperature of the screw according to the requirements of the process parameters, start the extruder, and let the plastic particles be fully mixe...

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PUM

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Abstract

The invention relates to an easily-stripped film, which is formed by extruding three layers of thin films, namely, a composite layer, an intermediate layer and a heat-seal layer. The composite layer comprises the following components in percentage by weight: 65 percent of polyethylene (Q281) and 35 percent of polyethylene (2420H); the intermediate layer comprises the following components in percentage by weight: 50 percent of polyethylene (2426H) and 50 percent of polyethylene (2420H); and the heat-seal layer comprises the following components in percentage by weight: 65 percent of polyethylene (Q281), 20 percent of polybutylene (PB-1) and 15 percent of polyethylene (SP1510). The easily-stripped film implemented by adopting the technical scheme can be compounded with biaxially stretched films such as a biaxially oriented polyester film (BOPET), a biaxially oriented nylon film (BOPA) and the like to be produced into an easily-stripped composite film so as to be produced into an easily-stripped packaging bag. In the packaging bag, the seal strength is between 5 and 10 N/25mm; the stripped part can whiten; the stripped surface is smooth and clean; and the seal integrality is high.

Description

technical field [0001] The present invention relates to a packaging material, more specifically to an easy-peelable packaging film. Background technique [0002] At present, there are strict requirements for medical and food packaging bags, that is, the seal of the packaging bag must have a certain strength, the peeled part should turn white when peeled off, the peeled surface should be smooth and clean, and have good sealing integrity. It is made of ordinary composite film. The finished medical packaging bag is easy to produce wire drawing and debris when peeling off, which will cause secondary pollution of medical devices. Contents of the invention [0003] The purpose of the present invention is to overcome the disadvantages of the prior art, and to provide a medical device with a good peeling effect, that is, the peeled part can turn white, the peeled surface is smooth and clean, free from wire drawing and debris, and has good sealing strength and sealing integrity. F...

Claims

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Application Information

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IPC IPC(8): B32B27/32B65D65/40
Inventor 杨建刚
Owner 美迪科(上海)包装材料有限公司
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