Preparation method of full-degradable express packaging bag

A packaging bag and fully degradable technology, which is applied in the field of preparation of fully degradable express packaging bags, can solve the problems of non-degradable express packaging bags, lack of strength performance, and packaging bags that cannot be used in the express industry, and achieve excellent flexibility and good performance. Effect of colorability and utilization improvement

Active Publication Date: 2019-04-19
四川梅塞尔科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the existing express packaging bags are not degradable, and the performance of the existing degradable packaging bags cannot be applied to the express delivery industry, and they do not have good strength performance. The purpose is to provide a fully degradable packaging bag The preparation method of the express packaging bag solves the problem of using the packaging bag in the express delivery industry

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A kind of preparation method of fully degradable express packaging bag of the present invention comprises the following steps:

[0030] (1) Add 1.0g of vegetable oil and 0.8g of calcium hydroxide to 100g of plant straw, mix evenly, place in a 90°C oven for 2 hours, set the temperature in the third zone of the mixer to 140°C, and the screw speed to 8rpm, change After 10 minutes, the modified hot-melt plant straw is obtained;

[0031] (2) Mix 30g of chemically modified starch, 70g of modified plant straw, 0.8g of soybean oil, 0.8g of calcium hydroxide, 0.5g of Ac316, and 1.0g of G22, and place them in an oven at 90°C for 2 hours. Set the temperature in the third zone of the mill to 140°C, set the screw speed to 9 rpm, and knead for 10 minutes;

[0032] (3) Continue to place it on the conical twin platform and utilize the conical twin-screw extruder to granulate;

[0033] (4) The obtained mixture was used at 120° C. to prepare a film for a packaging bag with a polymer fi...

Embodiment 2

[0038] A kind of preparation method of fully degradable express packaging bag of the present invention comprises the following steps:

[0039] (1) Add 1.2g of vegetable oil and 1.2g of calcium hydroxide to 100g of plant straw, mix evenly, place in an oven at 100°C for 2 hours, set the temperature in the third zone of the mixer to 125°C, and the screw speed to 9rpm, change After 20 minutes, the modified hot-melt plant straw is obtained;

[0040] (2) Mix 40g of chemically modified starch, 60g of modified plant straw, 1.0g of soybean oil, 0.9g of calcium hydroxide, 0.6g of Ac316, and 1.0g of G22, and place them in an oven at 90°C for 2 hours. Set the temperature in the third zone of the machine to 145°C, set the screw speed to 10rpm, and knead for 20min;

[0041] (3) Continue to place it on the conical twin platform and utilize the conical twin-screw extruder to granulate;

[0042] (4) The obtained mixture was used at 120° C. to prepare a film for a packaging bag with a polymer...

Embodiment 3

[0045] A preparation method for fully degradable express packaging bags, comprising the following steps:

[0046] (1) Add 1.4g of vegetable oil and 1.4g of calcium hydroxide to 100g of plant straw, mix well, place in a 90°C oven for 1.5h, set the temperature in the third zone of the mixer to 140°C, and the screw speed to 12rpm, After 25 minutes of modification, the modified hot-melt plant straw is obtained;

[0047] (2) Mix 45g of chemically modified starch, 55g of modified plant straw, 1.2g of soybean oil, 1.5g of calcium hydroxide, 0.5g of Ac316, and 1.6g of G22, and place them in an oven at 90°C for 2 hours. Set the temperature in the third zone of the machine to 140°C, set the screw speed to 10rpm, and knead for 10min;

[0048] (3) Continue to place it on the conical twin platform and utilize the conical twin-screw extruder to granulate;

[0049] (4) The obtained mixture was used at 130° C. to prepare a film for a packaging bag with a polymer film forming machine.

[00...

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Abstract

The invention discloses a preparation method of a fully-degradable express packaging bag, which comprises the following steps of: uniformly mixing 30-50 g of chemically modified starch, 50-70 g of modified hot-melt plant straws, 0.8-1.2 g of vegetable oil, 0.8-1.5 g of calcium hydroxide, 0.5-0.6 g of Ac316 and 1.0-1.6 g of G22, placing the mixture in an oven at the temperature of 80-100 DEG C for1-2 h, and mixing in a mixer for 10-20 min; continuously placing the material on a conical double-platform, and extruding and granulating by using a conical double-screw; making the obtained mixture into a packaging bag film in a polymer film forming machine at 120-140 DEG C. Compared with the traditional plastic packaging bag such as polyvinyl chloride, the fully-degradable express packaging bagcan achieve complete degradation under the natural condition and reduce the pollution to the environment.

Description

technical field [0001] The invention relates to the field of packaging bags, in particular to a method for preparing fully degradable express packaging bags. Background technique [0002] The total amount of packaging in my country's express delivery industry is huge and growing rapidly. With the rapid development of the express delivery industry, the problems of excessive packaging, overflow of express garbage, resource loss and environmental pollution have become increasingly prominent. The pollution caused by packaging waste to the environment cannot be ignored. Traditional plastic packaging bags are mainly polyvinyl chloride. However, the degradability of polyvinyl chloride plastic is extremely poor. Since my country has not yet established a recycling mechanism in the express delivery industry, nor has it used degradable plastic packaging technology, abandoned express packaging plastic bags have a great impact on the environment. At the same time, traditional plastics...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L97/02C08L3/04C08L91/00C08K3/22C08J5/18
CPCC08J5/18C08J2397/02C08J2403/04C08J2491/00C08K2003/2206
Inventor 王继亮包黎霞殷旭冉王昭丁梅先义李天师高宇
Owner 四川梅塞尔科技有限公司
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