Degradable express bag material

A technology of lauric acid polyoxyethylene and high-density polyethylene, applied in the field of express bags, can solve problems such as white pollution

Inactive Publication Date: 2018-04-24
GUANGDONG TENGEN IND GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the extensive use of courier bags has caused increasingly serious "white pollution" to the environment, and the preparation of degradable courier bags is a technical problem that needs to be solved urgently

Method used

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Examples

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preparation example Construction

[0030] The preparation method of above-mentioned degradable courier bag material comprises the following steps:

[0031] At room temperature, put high-density polyethylene, starch, polyethylene-grafted maleic anhydride, polylactic acid, polyoxyethylene laurate, and coupling agent into a mixer and stir evenly, then add additives, and continue stirring until the mixture is uniform. The mixture is obtained, and finally the mixture is extruded and granulated on a twin-screw extruder, and the granulation is the degradable express bag material.

[0032] When the above-mentioned degradable express bag material is used to prepare the express bag, the degradable express bag material is melt-extruded and blow-molded into the express bag.

[0033] The degradable express bag material of the present invention uses high-density polyethylene as the base material, high-density polyethylene, starch, polyethylene grafted with maleic anhydride, polylactic acid, polyoxyethylene laurate and a coup...

Embodiment 1

[0037] The degradable express bag material of the present embodiment comprises the following components by weight:

[0038]

[0039] The molecular weight range of high-density polyethylene is selected from 60,000 to 100,000, and its melt flow rate is 15 to 20g / 10min.

[0040] The graft ratio of polyethylene grafted with maleic anhydride is 1%, and the melt flow rate is 7-10g / 10min.

[0041] Polylactic acid is a mixture of poly-L-lactic acid and poly-racemic lactic acid, and the mass ratio of poly-L-lactic acid and poly-racemic lactic acid is 4:1.

[0042] Polyoxyethylene laurate is selected from the mixture of polyoxyethylene-2 ​​laurate and polyoxyethylene-9 laurate, and the mass ratio of polyoxyethylene-2 ​​laurate to polyoxyethylene-9 laurate is 1: 1.

[0043] The coupling agent is ethoxysilane.

[0044] The auxiliary agents are antioxidant BHT and white masterbatch, wherein the antioxidant BHT is 0.1 part by weight, and the white masterbatch is 0.2 part by weight.

...

Embodiment 2

[0048] The degradable express bag material of the present embodiment comprises the following components by weight:

[0049]

[0050] The molecular weight range of high-density polyethylene is selected from 80,000 to 150,000, and its melt flow rate is 12 to 15g / 10min.

[0051] The graft ratio of polyethylene grafted with maleic anhydride is 1.2%, and the melt flow rate is 6-8g / 10min.

[0052] Polylactic acid is a mixture of poly-L-lactic acid and poly-racemic lactic acid, and the mass ratio of poly-L-lactic acid and poly-racemic lactic acid is 5:1.

[0053] Polyoxyethylene laurate is polyoxyethylene-4 laurate.

[0054] The coupling agent is a mixture of acetoxysilane and chlorosilane, and the mass ratio of acetoxysilane to chlorosilane is 2:1.

[0055] The additive is antioxidant T501.

[0056] The preparation method and application of the above-mentioned degradable express bag material include the following steps:

[0057] At room temperature, by weight, 85 parts of high-...

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Abstract

The invention relates to a degradable express bag material. The degradable express bag material is prepared from components in parts by weight as follows: 70-120 parts of high-density polyethylene, 15-30 parts of starch, 8-15 parts of polyethylene grafted maleic anhydride, 5-10 parts of polylactic acid, 1-5 parts of polyoxyethylene laurate, 1-2 parts of a coupling agent and 0.1-1 part of an auxiliary; high-density polyethylene is taken as a base material, high-density polyethylene, the starch, polyethylene grafted maleic anhydride, polylactic acid, polyoxyethylene laurate and the coupling agent are subjected to a concerted reaction, the degradable express bag material with high flexibility is formed, and an express bag prepared from the degradable express bag material has excellent flexibility and tensile strength. The express bag prepared from the degradable express bag material has good flexibility and tensile strength when in a normal use state, is not prone to damage and has good biodegradation and photodegradation properties when abandoned in soil or an area containing rich microorganisms.

Description

technical field [0001] The invention relates to the technical field of express bags, in particular to degradable express bag materials. Background technique [0002] With the development of society and the improvement of people's living standards, more and more people choose to shop online, and people's items are exchanged more and more frequently, which makes logistics develop rapidly. During the transportation of the article, it is necessary to pack the article with a packing bag. Plastic express bags are widely used in express bags due to their advantages of light weight and low price. However, the extensive use of express bags has caused increasingly serious "white pollution" to the environment, and the preparation of degradable express bags is a technical problem that needs to be solved urgently. Contents of the invention [0003] Based on this, the present invention provides a degradable courier bag material, which is degradable and environmentally friendly. [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L3/02C08L51/06C08L67/04C08L71/02
CPCC08L23/06C08L2201/06C08L2205/025C08L2205/035C08L2207/062C08L3/02C08L51/06C08L67/04C08L71/02
Inventor 周孝伟邓凯陈国酿罗礼平刘君慧
Owner GUANGDONG TENGEN IND GRP CO LTD
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