High-toughness plastic packaging bag and production process thereof

Abstract

The invention discloses a production process of a high-toughness plastic packaging bag, the packaging bag comprises the following raw materials: polytetrafluoroethylene, molybdenum disulfide, graphite, plant fiber, glass fiber, carbon fiber, aromatic polyamide fiber, attapulgite, white carbon black, polyacrylamide, an auxiliary agent and vinyl trimethoxy silane, the production process comprises the following steps: S1, plastic raw materials are selected, and the plastic raw materials are uniformly mixed; adding into a high-degree mixer and uniformly mixing; s2, an auxiliary agent is added in the process of S1, and high-temperature mixing is carried out to form a molten state; s3, enabling the materials in the S2 to pass through a screw extruder base to form a tubular film blank, and performing film blowing and shaping by using a film blowing machine to form a film; and S4, using a bag making machine to carry out operations such as edge sealing, cutting and trepanning on the film, and packaging and warehousing finished products. Compared with the prior art, the plastic packaging bag has the advantage that the toughness and wear resistance of the plastic packaging bag can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of plastic packaging bag production, in particular to a high-toughness plastic packaging bag and a production process thereof. Background Art

[0002] Composite packaging plastic bags are made from synthetic or natural resins, with or without various plastic additives, reinforcements, and fillers. They are then processed, molded, or cross-linked and cured under a certain temperature and pressure to create a solid material or product. Plastics are materials that are primarily composed of resin (or monomers directly polymerized during processing), supplemented by additives such as plasticizers, fillers, lubricants, and colorants. These materials are synthetic polymer compounds that can flow and form during processing. However, existing plastic packaging bags lack distinct structural layers, failing to effectively function as individual layers. Furthermore, existing plastic bags suffer from poor abrasion resistance, insufficient strength, and inadequate toughness.

[0003] The information disclosed in this background technology section is only intended to enhance understanding of the overall background of the invention and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the above technical defects and provide a production process for high-toughness plastic packaging bags, which can improve the toughness and wear resistance of plastic packaging bags.

[0005] In order to solve the above problems, the technical solution of the present invention is a production process for high-toughness plastic packaging bags: the raw materials of the packaging bags include: polytetrafluoroethylene, molybdenum disulfide, graphite, plant fiber, glass fiber, carbon fiber, aromatic polyamide fiber, attapulgite, white carbon black, polyacrylamide, additives, and vinyltrimethoxysilane. The raw materials include the following components by weight: 50-70 parts of polytetrafluoroethylene, 8-12 parts of molybdenum disulfide, 16-20 parts of graphite, 6-8 parts of plant fiber, 6-8 parts of glass fiber, 6-8 parts of carbon fiber, 5-7 parts of aromatic polyamide fiber, 10-12 parts of attapulgite, 10-12 parts of white carbon black, 4-6 parts of polyacrylamide, 1-3 parts of additives, and 4-6 parts of vinyltrimethoxysilane.

[0006] Furthermore, the raw materials include the following components by weight: 50 parts of polytetrafluoroethylene, 8 parts of molybdenum disulfide, 16 parts of graphite, 6 parts of plant fiber, 6 parts of glass fiber, 6 parts of carbon fiber, 5 parts of aromatic polyamide fiber, 10 parts of attapulgite, 10 parts of white carbon black, 4 parts of polyacrylamide, 1 part of additive, and 4 parts of vinyltrimethoxysilane.

[0007] Furthermore, the raw materials include the following components by weight: 60 parts of polytetrafluoroethylene, 10 parts of molybdenum disulfide, 18 parts of graphite, 7 parts of plant fiber, 7 parts of glass fiber, 7 parts of carbon fiber, 6 parts of aromatic polyamide fiber, 11 parts of attapulgite, 11 parts of white carbon black, 5 parts of polyacrylamide, 2 parts of additives, and 5 parts of vinyltrimethoxysilane.

[0008] Furthermore, the raw materials include the following components by weight: 70 parts of polytetrafluoroethylene, 12 parts of molybdenum disulfide, 20 parts of graphite, 8 parts of plant fiber, 8 parts of glass fiber, 8 parts of carbon fiber, 7 parts of aromatic polyamide fiber, 12 parts of attapulgite, 12 parts of white carbon black, 6 parts of polyacrylamide, 3 parts of additives, and 6 parts of vinyltrimethoxysilane.

[0009] Furthermore, the auxiliary agent includes a lubricant, a coupling agent, a plasticizer, a toughening agent, and a stabilizer, wherein the ratio of the lubricant, the coupling agent, the plasticizer, the toughening agent, and the stabilizer is 3:2:4:3:5.

[0010] Furthermore, a production process for a high-toughness plastic packaging bag comprises the following steps:

[0011] S1. Select plastic raw materials and add them into a high-speed mixer to mix evenly;

[0012] S2. Adding additives in the process of S1 and performing high-temperature mixing to form a molten state;

[0013] S3, the material in S2 is passed through a screw extruder to form a tubular film embryo, and then a film blowing machine is used to blow the film into a film;

[0014] S4. Use the bag making machine to perform edge sealing, cutting, and hole punching on the film, and then the finished products can be packaged and put into storage.

[0015] The advantages of the present invention compared with the existing technology are:

[0016] 1. The polynylon co-extruded film used in the present invention is not only environmentally friendly but also has high toughness and good heat-sealing properties, thereby improving the durability of the packaging bag. The calcium carbonate masterbatch improves the hardness, wear resistance and impact resistance of plastic products. Molybdenum disulfide makes the surface of the plastic packaging bag harder and more wear-resistant. The glass fiber provides a strong mechanical bond between polymers, enhancing the integrity and wear resistance. The carbon fiber can improve the integrity, wear resistance and load-bearing capacity of the structure. The plant fiber improves the environmental performance of the plastic and enhances its biodegradability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a process flow chart of the present invention. DETAILED DESCRIPTION

[0018] In order to make the contents of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0019] Example 1

[0020] A high-toughness plastic packaging bag, the raw materials of which include: polytetrafluoroethylene, nylon co-extruded film, calcium carbonate masterbatch, molybdenum disulfide, graphite, plant fiber, glass fiber, carbon fiber, aromatic polyamide fiber, attapulgite, white carbon black, polyacrylamide, additives, and vinyltrimethoxysilane.

[0021] The production process includes the following steps:

[0022] S1. Select plastic raw materials and add them into a high-speed mixer to mix evenly;

[0023] The raw materials include the following components by weight: 50 parts of polytetrafluoroethylene, 30 parts of nylon co-extruded film, 10 parts of calcium carbonate masterbatch, 8 parts of molybdenum disulfide, 16 parts of graphite, 6 parts of plant fiber, 6 parts of glass fiber, 6 parts of carbon fiber, 5 parts of aromatic polyamide fiber, 10 parts of attapulgite, 10 parts of white carbon black, 4 parts of polyacrylamide, 1 part of additive, and 4 parts of vinyltrimethoxysilane.

[0024] Polytetrafluoroethylene is the main raw material for plastic packaging bags and has an extremely low coefficient of friction. It can form a lubricating film during friction, significantly improving wear resistance. Nylon co-extruded film is a composite material made through co-extrusion technology. It combines the high barrier properties of nylon and the softness of polyethylene. It is not only environmentally friendly but also has high toughness and good heat sealing properties, improving the durability of packaging bags. Calcium carbonate masterbatch can improve the hardness, wear resistance and impact resistance of plastic products, indirectly improving the durability of plastic packaging bags. Molybdenum disulfide can increase crystallinity, making the surface of plastic packaging bags harder and more wear-resistant. The lattice structure of graphite makes its molecules easy to slide, suitable for humid environments. Glass fiber provides strong mechanical bonding between polymers, enhancing integrity and wear resistance. Carbon fiber can improve the integrity, wear resistance and load resistance of the structure. Plant fiber improves the environmental performance of plastics and enhances biodegradability.

[0025] Aromatic polyamide fiber can improve the scratch resistance requirements. Silica mixed with attapulgite and glass fiber can be used as a reinforcing fulcrum for connecting polyethylene macromolecular chains to improve wear resistance. Polyacrylamide can enhance the tensile strength and wear resistance of plastics.

[0026] S2. Adding additives in the process of S1 and performing high-temperature mixing to form a molten state;

[0027] The additives include lubricant, coupling agent, plasticizer, toughening agent and stabilizer, wherein the ratio of lubricant, coupling agent, plasticizer, toughening agent and stabilizer is 3:5:4:3:5, i.e. 0.15 part of lubricant, 0.25 part of coupling agent, 0.2 part of plasticizer, 0.15 part of toughening agent and 0.25 part of stabilizer.

[0028] Lubricants such as magnesium stearate or zinc stearate improve the processing performance and surface finish of plastics; coupling agents such as titanate coupling agents enhance the compatibility between plastics and other additives, improving the overall performance of composite materials; plasticizers improve the flexibility and processability of plastics, making them more suitable for manufacturing packaging bags, toughening agents can further improve the impact resistance and durability of plastic packaging bags, and stabilizers can prevent aging and degradation of plastics due to factors such as light and heat during processing and use.

[0029] S3, the material in S2 is passed through a screw extruder to form a tubular film embryo, and then a film blowing machine is used to blow the film into a film;

[0030] S4. Use the bag making machine to perform edge sealing, cutting, and hole punching on the film, and then the finished products can be packaged and put into storage.

[0031] Example 2

[0032] A high-toughness plastic packaging bag, the raw materials of which include: polytetrafluoroethylene, nylon co-extruded film, calcium carbonate masterbatch, molybdenum disulfide, graphite, plant fiber, glass fiber, carbon fiber, aromatic polyamide fiber, attapulgite, white carbon black, polyacrylamide, additives, and vinyltrimethoxysilane.

[0033] The production process includes the following steps:

[0034] S1. Select plastic raw materials and add them into a high-speed mixer to mix evenly;

[0035] The raw materials include the following components by weight: 60 parts of polytetrafluoroethylene, 40 parts of nylon co-extruded film, 11 parts of calcium carbonate masterbatch, 10 parts of molybdenum disulfide, 18 parts of graphite, 7 parts of plant fiber, 7 parts of glass fiber, 7 parts of carbon fiber, 6 parts of aromatic polyamide fiber, 11 parts of attapulgite, 11 parts of white carbon black, 5 parts of polyacrylamide, 2 parts of additives, and 5 parts of vinyltrimethoxysilane.

[0036] S2. Adding additives in the process of S1 and performing high-temperature mixing to form a molten state;

[0037] The additives include lubricant, coupling agent, plasticizer, toughening agent and stabilizer, wherein the ratio of lubricant, coupling agent, plasticizer, toughening agent and stabilizer is 3:5:4:3:5, i.e. 0.3 part of lubricant, 0.5 part of coupling agent, 0.4 part of plasticizer, 0.3 part of toughening agent and 0.5 part of stabilizer.

[0038] S3, the material in S2 is passed through a screw extruder to form a tubular film embryo, and then a film blowing machine is used to blow the film into a film;

[0039] S4. Use the bag making machine to perform edge sealing, cutting, and hole punching on the film, and then the finished products can be packaged and put into storage.

[0040] Example 3

[0041] A high-toughness plastic packaging bag, the raw materials of which include: polytetrafluoroethylene, nylon co-extruded film, calcium carbonate masterbatch, molybdenum disulfide, graphite, plant fiber, glass fiber, carbon fiber, aromatic polyamide fiber, attapulgite, white carbon black, polyacrylamide, additives, and vinyltrimethoxysilane.

[0042] The production process includes the following steps:

[0043] S1. Select plastic raw materials and add them into a high-speed mixer to mix evenly;

[0044] The raw materials include the following components by weight: 70 parts of polytetrafluoroethylene, 50 parts of nylon co-extruded film, 12 parts of calcium carbonate masterbatch, 12 parts of molybdenum disulfide, 20 parts of graphite, 8 parts of plant fiber, 8 parts of glass fiber, 8 parts of carbon fiber, 7 parts of aromatic polyamide fiber, 12 parts of attapulgite, 12 parts of white carbon black, 6 parts of polyacrylamide, 3 parts of additives, and 6 parts of vinyltrimethoxysilane.

[0045] S2. Adding additives in the process of S1 and performing high-temperature mixing to form a molten state;

[0046] The additives include lubricant, coupling agent, plasticizer, toughening agent and stabilizer, wherein the ratio of lubricant, coupling agent, plasticizer, toughening agent and stabilizer is 3:5:4:3:5, i.e. 0.45 part of lubricant, 0.75 part of coupling agent, 0.6 part of plasticizer, 0.45 part of toughening agent and 0.75 part of stabilizer.

[0047] S3, the material in S2 is passed through a screw extruder to form a tubular film embryo, and then a film blowing machine is used to blow the film into a film;

[0048] S4. Use the bag making machine to perform edge sealing, cutting, and hole punching on the film, and then the finished products can be packaged and put into storage.

[0049] The above description of the present invention and its embodiments is non-limiting. The accompanying drawings illustrate only one embodiment of the present invention. In short, if a person skilled in the art is inspired by the above description and, without departing from the purpose of the present invention, designs structures and embodiments similar to the technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A high-toughness plastic packaging bag, characterized in that: The raw materials of the packaging bag include: polytetrafluoroethylene, nylon co-extruded film, calcium carbonate masterbatch, molybdenum disulfide, graphite, plant fiber, glass fiber, carbon fiber, aromatic polyamide fiber, attapulgite, white carbon black, polyacrylamide, additives, and vinyl trimethoxy silane. The raw materials include the following components by weight: 50-70 parts of polytetrafluoroethylene, 30-50 parts of nylon co-extruded film, 10-12 parts of calcium carbonate masterbatch, 8-12 parts of molybdenum disulfide, 16-20 parts of graphite, 6-8 parts of plant fiber, 6-8 parts of glass fiber, 6-8 parts of carbon fiber, 5-7 parts of aromatic polyamide fiber, 10-12 parts of attapulgite, 10-12 parts of white carbon black, 4-6 parts of polyacrylamide, 1-3 parts of additives, and 4-6 parts of vinyl trimethoxy silane.

2. A high-toughness plastic packaging bag according to claim 1, characterized in that: The raw materials include the following components by weight: 50 parts of polytetrafluoroethylene, 30 parts of nylon co-extruded film, 10 parts of calcium carbonate masterbatch, 8 parts of molybdenum disulfide, 16 parts of graphite, 6 parts of plant fiber, 6 parts of glass fiber, 6 parts of carbon fiber, 5 parts of aromatic polyamide fiber, 10 parts of attapulgite, 10 parts of white carbon black, 4 parts of polyacrylamide, 1 part of additive, and 4 parts of vinyltrimethoxysilane.

3. A high-toughness plastic packaging bag according to claim 1, characterized in that: The raw materials include the following components by weight: 60 parts of polytetrafluoroethylene, 40 parts of nylon co-extruded film, 11 parts of calcium carbonate masterbatch, 10 parts of molybdenum disulfide, 18 parts of graphite, 7 parts of plant fiber, 7 parts of glass fiber, 7 parts of carbon fiber, 6 parts of aromatic polyamide fiber, 11 parts of attapulgite, 11 parts of white carbon black, 5 parts of polyacrylamide, 2 parts of additives, and 5 parts of vinyltrimethoxysilane.

4. A high-toughness plastic packaging bag according to claim 1, characterized in that: The raw materials include the following components by weight: 70 parts of polytetrafluoroethylene, 50 parts of nylon co-extruded film, 12 parts of calcium carbonate masterbatch, 12 parts of molybdenum disulfide, 20 parts of graphite, 8 parts of plant fiber, 8 parts of glass fiber, 8 parts of carbon fiber, 7 parts of aromatic polyamide fiber, 12 parts of attapulgite, 12 parts of white carbon black, 6 parts of polyacrylamide, 3 parts of additives, and 6 parts of vinyltrimethoxysilane.

5. The high-toughness plastic packaging bag according to claim 1, characterized in that: The auxiliary agents include lubricant, coupling agent, plasticizer, toughening agent and stabilizer, wherein the ratio of lubricant, coupling agent, plasticizer, toughening agent and stabilizer is 3:5:4:3:

5.

6. A production process for a high-toughness plastic packaging bag according to claims 1-5, characterized in that: The following steps are involved: S1. Select plastic raw materials and add them into a high-speed mixer for uniform mixing; S2, adding additives in the process of S1, and performing high-temperature mixing to form a molten state; S3, passing the material in S2 through a screw extruder to form a tubular film embryo, and then using a film blowing machine to blow the film to shape it to form a film; S4. Use the bag making machine to perform edge sealing, cutting, and hole punching on the film, and then the finished products can be packaged and put into storage.

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