Regenerated garbage bag prepared from waste plastics and preparation method thereof

A technology of garbage bags and waste plastics, which is applied in the field of resource utilization of waste plastics, can solve the problems of no recycling value, difficult to degrade, and difficult to deal with plastic pollution, and achieve the effects of excellent performance, small environmental impact, and low cost

Pending Publication Date: 2021-08-17
CHINA TIANYING +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method provides a way of resource utilization of waste plastics, but the prepared garbage bags need to be partially degraded under certain conditions, and some non-degradable plastic fragments will still remain in the environment after degradation, and the resulting plastic pollution is even worse. intractable
This kind of degradable garbage bag has no recycling value after being discarded, and it is difficult to degrade in the natural environment, which will bring new environmental problems

Method used

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  • Regenerated garbage bag prepared from waste plastics and preparation method thereof

Examples

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preparation example Construction

[0052] A method for preparing a recycled garbage bag prepared from waste plastics, comprising the following steps:

[0053] Step 1: weighing 30-70 parts of recycled high-density polyethylene, 0-40 parts of high-density polyethylene, 0-20 parts of recycled low-density polyethylene, 0-20 parts of low-density polyethylene, 10-30 parts of linear low density polyethylene, 0-8 parts of color masterbatch and 1-5 parts of open-ended masterbatch, mix each raw material component in a high-speed mixer for 5-15 minutes to obtain a premix;

[0054] Step 2: Use an automatic feeding device to feed the premix into the extruder for melting, mixing, and plasticization. The barrel temperature of the extruder is 160-250°C;

[0055] Step 3: The plasticized melt enters the annular die of the extruder head to form a cylindrical film tube, and the temperature of the head is 170-250°C;

[0056] Step 4: Blow compressed air into the film tube to make it expand, then air-cool, pull, and roll to form a f...

Embodiment 1

[0060] The material of the regenerated garbage bag comprises the following raw material parts by weight in the present embodiment:

[0061] 30 parts of recycled high-density polyethylene (r-HDPE)

[0062] High-density polyethylene (HDPE) 35 parts

[0063] Recycled low-density polyethylene (r-LDPE) 10 parts

[0064] Low-density polyethylene (LDPE) 0 parts

[0065] Linear low density polyethylene (LLDPE) 25 parts

[0066] Color masterbatch 5 parts

[0067] Open masterbatch 2 parts

[0068] The melt mass flow rate of recycled high-density polyethylene (r-HDPE) is 0.4g / 10min; the melt mass flow rate of high-density polyethylene (HDPE) is 0.035g / 10min; the recycled low-density polyethylene (r-LDPE) ) The melt mass flow rate is 0.34 g / 10min; the linear low density polyethylene (LLDPE) melt mass flow rate is 1.0g / 10min; the masterbatch is black, and its carrier resin is LDPE, and its melt mass The flow rate is 2.0 g / 10min; the carrier resin of the open masterbatch is LDPE.

[...

Embodiment 2

[0076] The material of the regenerated garbage bag comprises the following raw material parts by weight in the present embodiment:

[0077] Recycled high-density polyethylene (r-HDPE) 50 parts

[0078] High-density polyethylene (HDPE) 20 parts

[0079] Recycled low-density polyethylene (r-LDPE) 0 parts

[0080] Low-density polyethylene (LDPE) 10 parts

[0081] Linear Low Density Polyethylene (LLDPE) 20 parts

[0082] Color masterbatch 5 parts

[0083] Open masterbatch 1 part

[0084] The melt mass flow rate of recycled high-density polyethylene (r-HDPE) is 0.4g / 10min; the melt mass flow rate of high-density polyethylene (HDPE) is 0.035g / 10min; the melt mass flow rate of low-density polyethylene (LDPE) The flow rate is 2.4g / 10min; the melt mass flow rate of linear low-density polyethylene (LLDPE) is 1.0g / 10min; the masterbatch is black color masterbatch, the carrier resin is LDPE, and the melt mass flow rate is 2.0 g / 10min; open masterbatch carrier resin is LDPE / LLDPE.

...

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Abstract

The invention discloses a regenerated garbage bag prepared from waste plastics and a preparation method thereof. The garbage bag is prepared from the following materials in parts by mass: 30-70 parts of regenerated high-density polyethylene; 0-40 parts of high density polyethylene; 0-20 parts of regenerated low density polyethylene; 0-20 parts of low density polyethylene; 10 -30 parts of linear low density polyethylene; 0-8 parts of color master batch; and 1-5 parts of an opening master batch. The regenerated garbage bag is prepared from the waste plastics in the household garbage, so that the recycling of waste plastic resources is realized, the problems of plastic pollution and plastic resource consumption can be solved to a certain extent, and certain environmental friendliness is realized; and meanwhile, the waste plastic raw materials are wide in source and low in price, so that the cost is low and the waste plastic raw materials are easily accepted by the market when used for preparing regenerated garbage bags.

Description

technical field [0001] The invention relates to a recycled garbage bag and a preparation method thereof, in particular to a recycled garbage bag prepared from waste plastics and a preparation method thereof, belonging to the field of resource utilization of waste plastics. Background technique [0002] The proportion of plastic in domestic waste is generally 10% to 18%, and in some areas it is as high as 20%, of which 42% to 57% are PE plastic packaging products. In my country, the current annual production of waste plastics has exceeded 30 million tons, and continues to grow at a rate of 10% per year. However, its recycling rate is less than 30% of the production, and there is still a certain gap compared with developed countries. In order to improve the utilization efficiency of waste plastic resources and at the same time strengthen the pollution control of waste plastics, the country has successively implemented waste classification policies and plastic restriction order...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/08C08J5/18
CPCC08J5/18C08J2323/06C08J2423/06C08J2423/08
Inventor 张宇燕曹德标程利萍韩丹李军陈逸东
Owner CHINA TIANYING
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