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Anti-virus thin film and biaxial tension technique

A biaxial stretching and film technology, which is applied in the field of antibacterial film, can solve the problems of heavy metal ions not meeting food safety requirements, affecting plastic processing performance, and poor compatibility of plastic matrix, achieving good transparency, improving antistatic performance, thick and thin good uniformity

Inactive Publication Date: 2003-10-01
GUILIN PRENOVO ANTIBACTERIAL MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The antibacterial effect of inorganic antibacterial agents is long-term and stable, but the effect on mold is not obvious, and the compatibility with the plastic matrix is ​​poor, which affects the processing performance of plastics. For example, the production of biaxially stretched films is greatly restricted; especially its dissolution Heavy metal ions do not meet food safety requirements
The main component of organic antibacterial agents is synthetic organic matter, which has fast antibacterial speed, wide sterilization range, and good effect on mold, but its defects are also obvious, such as poor safety of dissolved substances, poor heat resistance, and short duration of drug effect, which also affect its application.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach

[0008] The main component of the antibacterial film of the present invention is polypropylene resin, adding an appropriate amount of antistatic agents, smoothing agents, anti-sticking agents and other auxiliary agents, adding organic antibacterial functional groups to the surface materials that require antibacterial functions to assemble on the matrix resin The antibacterial masterbatch assembled by molecules on the molecular chains is 1.0-20.0% by weight, mixed evenly, and biaxially stretched by a certain number of times to form an antibacterial film.

[0009] The antibacterial masterbatch is added in a weight percentage of 3.0-5.0%, and the effect is better.

[0010] The weight percentage of antibacterial masterbatch added is 4.0~5.0% and the effect is the best.

[0011] The polypropylene resin is homopolymerized polypropylene resin or random copolymerized polypropylene resin.

[0012] Anti-sticking agent, and / or antistatic agent, and / or smoothing agent are added to the fil...

Embodiment 1

[0017] Embodiment 1 antibacterial polypropylene light film

[0018] The antibacterial masterbatch was dried at a temperature of 100°C for 8 hours.

[0019] ①The three-layer extrusion is ABA structure, that is, the upper and lower antibacterial surface layers and the non-antibacterial core layer form a film. Thickness 15μm. in:

[0020] Surface layer A ingredients: 77.0-79.5% homopolypropylene resin, 18.0-20.0% antibacterial masterbatch, 2.5-3.0% anti-sticking agent;

[0021] Ingredients of core layer B: homopolypropylene resin 94.0-95.5%, antistatic agent 3.0-4.0%, slip agent 1.5-2.0%;

[0022] The antibacterial film is made by two-way stretching process, and the temperature of the quenching roll or cooling water is 25°C.

[0023] ②The three-layer extrusion is an ABC structure, that is, the antibacterial surface layer, non-antibacterial surface layer and non-antibacterial core layer form a film. Thickness 15μm. in:

[0024] Surface layer A ingredients: 77.0-79.5% ho...

Embodiment 2

[0030] Embodiment 2 antibacterial type polypropylene single-sided heat-sealing film

[0031] The antibacterial masterbatch was dried at a temperature of 110° C. for 1 hour.

[0032] ① The two-layer extrusion is AB structure, that is, the antibacterial heat-sealed surface layer and the non-antibacterial layer form a film. Thickness 25μm. in:

[0033] Ingredients for surface layer A: 93.0-96.0% random copolymerized polypropylene resin, 2.0-4.0% antibacterial masterbatch, 2.0-3.0% anti-sticking agent;

[0034] B layer ingredients: homopolymer polypropylene resin 96.0-97.2%, antistatic agent 2.0-3.0%, slip agent 0.8-1.0%;

[0035] The antibacterial film is made by biaxial stretching process, and the temperature of the quenching roll or cooling water is 15°C.

[0036] ②The three-layer extrusion is an ABC structure, that is, the antibacterial heat-sealed surface layer, the ordinary surface layer and the non-antibacterial core layer form a film with a thickness of 25 μm. in:

...

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Abstract

An antibacterial film is prepared from polyacrylic resin, assistant and antibacterial mother particles through bidirectional drawing. Its advantages are high and durable bacteria killing and suppressing effect and antimildew effect, high strength, uniformity, transparency, and thermal stability, and high safety.

Description

(1) Technical field [0001] The invention relates to an antibacterial film and a biaxial stretching process of the film. (2) Technical background [0002] Various bacteria and fungi inevitably exist in the environment we live in. Under suitable temperature and humidity conditions, they will multiply rapidly, which is the biggest threat to human health. With the development of science and technology and the improvement of living standards, more and more attention is paid to hygiene and health, and antibacterial resin products are welcomed. Antibacterial plastics are added with antibacterial agents. At present, there are mainly inorganic antibacterial agents and organic antibacterial agents. Inorganic antibacterial agents generally use metals and their compounds as active ingredients, commonly used are copper, silver, zinc, titanium, mercury, etc. The antibacterial effect of inorganic antibacterial agents is long-term and stable, but the effect on mold is not obvious, and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C55/00C08J5/18C08L23/10
Inventor 李建雄赖为新王文伟刘勇刘伶彭秋生秦来发黎桥长
Owner GUILIN PRENOVO ANTIBACTERIAL MATERIAL CO LTD
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