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Plastic film and a courier bag

A technology for plastic films and raw materials, applied in the field of plastic products, can solve the problems of non-degradability and natural environment hazards, and achieve the effect of reduced thickness and good bonding

Inactive Publication Date: 2018-12-18
SF EXPRESS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to statistics, the number of express plastic bags used in 2017 reached 16 billion, and the main raw material polyethylene PE used in express packaging plastic bags is non-degradable, resulting in a large amount of white garbage, which brings harm to the natural environment

Method used

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  • Plastic film and a courier bag

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Weigh raw materials according to the following proportions:

[0027] The raw materials of the upper layer include the following substances in percentage by weight:

[0028] Linear Low Density Polyethylene 40.00%, Bimodal Polyethylene 50.00% and Metallocene 10.00%.

[0029] The raw materials of the middle layer include the following substances in percentage by weight:

[0030] Linear low density polyethylene 35%, high density polyethylene HDPE 20%, metallocene 25% and white masterbatch 20%.

[0031] The raw materials of the bottom layer include the following substances in percentage by weight:

[0032] Linear low density polyethylene with slip agent 73.5%, low density polyethylene thread with slip agent 10%, metallocene 15% and black masterbatch 1.5%.

[0033] The thickness ratio among the bottom layer, the middle layer and the upper layer is 3:4:3.

[0034] Preparation:

[0035] According to the above-mentioned thickness ratio, three layers of raw materials of the ...

Embodiment 2

[0038] Weigh raw materials according to the following proportions:

[0039] The raw materials of the upper layer include the following substances in percentage by weight:

[0040] Linear Low Density Polyethylene 40.00%, Bimodal Polyethylene 45.00% and Metallocene 15.00%.

[0041] The raw materials of the middle layer include the following substances in percentage by weight:

[0042] Linear low density polyethylene 35%, high density polyethylene HDPE 25%, metallocene 20% and white masterbatch 20%.

[0043] The raw materials of the bottom layer include the following substances in percentage by weight:

[0044] Linear low density polyethylene with slip agent 70%, low density polyethylene thread with slip agent 15%, metallocene 13.5% and gray masterbatch 1.5%.

[0045] The thickness ratio between the bottom layer, the middle layer and the upper layer is 3:4:3.

[0046] The preparation method is the same as in Example 1, except that the thickness of the courier bag in this exam...

Embodiment 3

[0048] Weigh raw materials according to the following proportions:

[0049] The raw materials of the upper layer include the following substances in percentage by weight:

[0050] Linear Low Density Polyethylene 35.00%, Bimodal Polyethylene 55.00% and Metallocene 10.00%.

[0051] The raw materials of the middle layer include the following substances in percentage by weight:

[0052] Linear low density polyethylene 30%, high density polyethylene HDPE 20%, metallocene 25% and white masterbatch 25%.

[0053] The raw materials of the bottom layer include the following substances in percentage by weight:

[0054] Linear low density polyethylene with slip agent 75%, low density polyethylene thread with slip agent 13%, metallocene 10% and black masterbatch 2%.

[0055] The thickness ratio between the bottom layer, the middle layer and the upper layer is 3:4:3.

[0056] The preparation method is the same as in Example 1, except that the thickness of the courier bag in this example...

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Abstract

The invention discloses a plastic film and a courier bag. The plastic film is formed by co-extrusion blow molding of three layers, namely a bottom layer, an intermediate layer and an upper layer. Theraw materials of the upper layer include linear low density polyethylene, bimodal polyethylene and metallocene; the raw materials of the intermediate layer include linear low density polyethylene, high density polyethylene HDPE and metallocene; and the raw materials of the bottom layer include linear low density polyethylene containing a slip agent, low density polyethylene wire containing a slipagent and metallocene. The courier bag is prepared from the plastic film. Due to different components of each layer of the plastic film, thickness of the plastic film is finally reduced. The plastic film can be used as a courier bag. Since the upper layer contains bimodal polyethylene which can be well combined with an express delivery sheet, the express delivery sheet can be firmly glued.

Description

technical field [0001] The disclosure belongs to the field of plastic products, in particular to a plastic film and a courier bag. Background technique [0002] With the development of the e-commerce express delivery industry, people have become accustomed to shopping on online platforms, and because of the advantages of low cost and convenient operation, merchants usually use plastic bags for packaging. According to statistics, the number of express plastic bags used in 2017 reached 16 billion, and the main raw material polyethylene PE used in express packaging plastic bags is non-degradable, resulting in a large amount of white garbage, which brings harm to the natural environment. Contents of the invention [0003] In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide a plastic film and a courier bag that use less material and maintain the same performance during production. [0004] In order to achieve the above object, the ...

Claims

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Application Information

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IPC IPC(8): B32B27/32B32B27/18B32B27/06B32B33/00B65D30/08
CPCB32B27/08B32B27/18B32B27/32B32B27/327B32B33/00B32B2439/06B65D31/04
Inventor 吴松美黄亮蒋尊国武睿泽
Owner SF EXPRESS
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