Easily degradable environment-friendly plastic bag and preparation method thereof

Abstract

The invention provides an easily degradable environment-friendly plastic bag and a preparation method thereof. The easily degradable environment-friendly plastic bag is prepared from the following rawmaterials in parts by weight: 50-60 parts of polyethylene, 25-35 parts of polypropylene, 12-18 parts of straw fiber, 8-12 parts of starch, 1-3 parts of dispersing agent, 5-7 parts of reinforcing agent, and 1-3 parts of plasticizer. The preparation method comprises the following steps of (1) weighing the raw materials according to the parts by weight of the raw materials; (2) putting the raw materials into a heating device so as to form a liquid mixture, wherein the heating temperature is 220-250 DEG C; (3) putting the mixture obtained in step (2) into a bag film blowing device, blowing the film to form a film bubble; (4) putting the film bubble in a shaping device, so as to form a plastic film with a film thickness of 0.02mm to 0.03mm; (5) embossing and printing patterns on the plastic film; and (6) cutting the film to obtain the finished product. Due to use of the straw fiber and starch, the degrading effect is good, and surrounding environment is slightly affected. The preparation method is easy, and has no high requirement on machineries. The easily degradable environment-friendly plastic bag is low-cost and has good economic benefits.

Description

technical field

[0001] The invention relates to an easily degradable environment-friendly plastic packaging bag and a preparation method thereof, belonging to the field of plastic products. Background technique

[0002] The use of plastic bags has brought great convenience to people's lives. Plastic bags made of plastic film are light, thin, impermeable, strong, and low in cost. The amount of use is increasing, and the waste plastic bags after use are not easy to recycle and degrade. A large number of waste plastic bags have become a serious problem that pollutes the environment. Contents of the invention

[0003] The present invention aims to solve the above problems, and provides an easily degradable environmentally friendly plastic packaging bag and a preparation method thereof.

[0004] It is composed of the following raw materials in parts by weight: 50-60 parts of polyethylene, 25-35 parts of polypropylene, 12-18 parts of straw fiber, 8-12 parts of starch, 1-3 parts...

Examples

Embodiment 1

[0012] An easily degradable and environmentally friendly plastic packaging bag and a preparation method thereof, which are composed of the following raw materials in parts by weight: 50 parts of polyethylene, 25 parts of polypropylene, 12 parts of straw fiber, 8 parts of starch, 1 part of dispersant, 5 parts of strong agent, 1 part of plasticizer.

[0013] The preparation method is as follows: (1) weigh the raw materials according to the weight fraction of each raw material; (2) put each raw material into a heating device to form a liquid mixture, and the heating temperature is 220 ° C; (3) put the mixture obtained in step (2) into the preparation Bag film blowing device for blown film processing to form mold bubbles; (4) place the film bubbles in the forming device to form a plastic film with a film thickness of 0.02 mm to 0.03 mm; (5) emboss and print patterns on the plastic film processing; (6) film cutting processing, that is, the finished product.

Embodiment 2

[0015] An easily degradable environmentally friendly plastic packaging bag and a preparation method thereof, which is composed of the following raw materials in parts by weight: 60 parts of polyethylene, 35 parts of polypropylene, 18 parts of straw fiber, 12 parts of starch, 3 parts of dispersant, 7 parts of strong agent, 3 parts of plasticizer.

[0016] The preparation method is as follows: (1) weigh the raw materials according to the weight fraction of each raw material; (2) put each raw material into a heating device to form a liquid mixture, and the heating temperature is 250 ° C; (3) put the mixture obtained in step (2) into the preparation Bag film blowing device for blown film processing to form mold bubbles; (4) place the film bubbles in the forming device to form a plastic film with a film thickness of 0.02 mm to 0.03 mm; (5) emboss and print patterns on the plastic film processing; (6) film cutting processing, that is, the finished product.

Embodiment 3

[0018] An easily degradable environmentally friendly plastic packaging bag and a preparation method thereof, which are composed of the following raw materials in parts by weight: 55 parts of polyethylene, 30 parts of polypropylene, 15 parts of straw fiber, 10 parts of starch, 2 parts of dispersant, 6 parts of strong agent, 2 parts of plasticizer.

[0019] The preparation method is as follows: (1) weigh the raw materials according to the weight fraction of each raw material; (2) put each raw material into a heating device to form a liquid mixture, and the heating temperature is 235 ° C; (3) put the mixture obtained in step (2) into the preparation Bag film blowing device for blown film processing to form mold bubbles; (4) place the film bubbles in the forming device to form a plastic film with a film thickness of 0.02 mm to 0.03 mm; (5) emboss and print patterns on the plastic film processing; (6) film cutting processing, that is, the finished product.

technical field

[0001] The invention relates to an easily degradable environment-friendly plastic packaging bag and a preparation method thereof, belonging to the field of plastic products. Background technique

[0002] The use of plastic bags has brought great convenience to people's lives. Plastic bags made of plastic film are light, thin, impermeable, strong, and low in cost. The amount of use is increasing, and the waste plastic bags after use are not easy to recycle and degrade. A large number of waste plastic bags have become a serious problem that pollutes the environment. Contents of the invention

[0003] The present invention aims to solve the above problems, and provides an easily degradable environmentally friendly plastic packaging bag and a preparation method thereof.

[0004] It is composed of the following raw materials in parts by weight: 50-60 parts of polyethylene, 25-35 parts of polypropylene, 12-18 parts of straw fiber, 8-12 parts of starch, 1-3 parts...

Examples

Embodiment 1

[0012] An easily degradable and environmentally friendly plastic packaging bag and a preparation method thereof, which are composed of the following raw materials in parts by weight: 50 parts of polyethylene, 25 parts of polypropylene, 12 parts of straw fiber, 8 parts of starch, 1 part of dispersant, 5 parts of strong agent, 1 part of plasticizer.

[0013] The preparation method is as follows: (1) weigh the raw materials according to the weight fraction of each raw material; (2) put each raw material into a heating device to form a liquid mixture, and the heating temperature is 220 ° C; (3) put the mixture obtained in step (2) into the preparation Bag film blowing device for blown film processing to form mold bubbles; (4) place the film bubbles in the forming device to form a plastic film with a film thickness of 0.02 mm to 0.03 mm; (5) emboss and print patterns on the plastic film processing; (6) film cutting processing, that is, the finished product.

Embodiment 2

[0015] An easily degradable environmentally friendly plastic packaging bag and a preparation method thereof, which is composed of the following raw materials in parts by weight: 60 parts of polyethylene, 35 parts of polypropylene, 18 parts of straw fiber, 12 parts of starch, 3 parts of dispersant, 7 parts of strong agent, 3 parts of plasticizer.

[0016] The preparation method is as follows: (1) weigh the raw materials according to the weight fraction of each raw material; (2) put each raw material into a heating device to form a liquid mixture, and the heating temperature is 250 ° C; (3) put the mixture obtained in step (2) into the preparation Bag film blowing device for blown film processing to form mold bubbles; (4) place the film bubbles in the forming device to form a plastic film with a film thickness of 0.02 mm to 0.03 mm; (5) emboss and print patterns on the plastic film processing; (6) film cutting processing, that is, the finished product.

Embodiment 3

[0018] An easily degradable environmentally friendly plastic packaging bag and a preparation method thereof, which are composed of the following raw materials in parts by weight: 55 parts of polyethylene, 30 parts of polypropylene, 15 parts of straw fiber, 10 parts of starch, 2 parts of dispersant, 6 parts of strong agent, 2 parts of plasticizer.

[0019] The preparation method is as follows: (1) weigh the raw materials according to the weight fraction of each raw material; (2) put each raw material into a heating device to form a liquid mixture, and the heating temperature is 235 ° C; (3) put the mixture obtained in step (2) into the preparation Bag film blowing device for blown film processing to form mold bubbles; (4) place the film bubbles in the forming device to form a plastic film with a film thickness of 0.02 mm to 0.03 mm; (5) emboss and print patterns on the plastic film processing; (6) film cutting processing, that is, the finished product.