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Antibacterial fiml and its preparation method

A technology of film and antibacterial agent, which is applied in the field of antibacterial film and its manufacture, can solve the problems of fast volatilization, strong taste, and resistance of organic antibacterial agents, and achieve the effect of long-lasting antibacterial property and preventing mildew

Inactive Publication Date: 2004-07-28
GUANGZHOU ZHUODEJIA FILM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

First of all, because antibacterial agents are usually difficult to dissolve in conventional water solvents, in order to formulate a coating solution, the antibacterial agent powder is usually ultra-micronized, and an organic solvent is used to dissolve the antibacterial agent powder to form a suspension. Solvents cause high organic volatile content in the film, which has negative impacts on humans and the environment
Even if the above-mentioned suspension is used to obtain the coating solution, since the antibacterial agent cannot be mixed at the molecular level, it is not a true solution, so the antibacterial component content in the dried film surface coating is not uniform, which limits the antibacterial effect.
In addition, there are also antibacterial films coated with pure traditional Chinese medicine natural polymer antibacterial solutions on the market. There are two problems in them.
At the same time, microorganisms are prone to develop resistance to organic antibacterial agents, thus affecting the lasting performance of antibacterial effects

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Manufacture of cast films

[0043]60wt% of LDPE F410 (manufactured by Singapore Polyolefin Private Company), 26wt% of HDPEXH6020 (manufactured by Cheveron Corporation), 4wt% of phthalocyanine green masterbatch, and 5wt% of silver antibacterial masterbatch (trade name BCM-E02A, manufactured by Guangzhou Kinte Antimicrobial Materials Co., Ltd.) , wherein, based on the total weight of the antibacterial masterbatch, the silver content of the antibacterial agent is 30%, the particle size of the antibacterial agent is less than 2 microns) and 50wt% of the titanium dioxide PE masterbatch 5wt% in each section of the BRAMPTON extruder whose temperature is controlled as follows Extrusion, the extrusion speed is 10 m / min, and through the casting die, the three-dimensional thickness is 30 microns and the basis weight is 24 g / m 2 The cast film of:

[0044] Feeding section: 204℃

[0045] Compression section: 227℃

[0046] Metering section: 250℃

[0047] Casting die: 260°C.

Embodiment 2

[0049] Manufacture of cast films

[0050] Polycarbonate (trade name Markrolon 2400, manufactured by Bayer Corporation) 20 wt%, EVA (trade name Elvax 3135, manufactured by Dupont Corporation) 16 wt%, PP (Escorene, trade name PP1304EI) 50% and four-pin brand ZnO antibacterial agent (manufactured by Jingyu Technology, Chengdu Jiaotong University, particle size 6 microns) 14 wt%, extruded in an extruder at an extrusion speed of 12 m / min, and passed through a casting die to obtain a three-dimensional thickness of 40 microns and a basis weight of 35g / m 2 The temperature of each section of the extruder is controlled as follows:

[0051] Feed section: 220

[0052] Compression section: 260℃

[0053] Metering section: 270℃

[0054] Casting Die: 280

Embodiment 3

[0056] Manufacture of cast films

[0057] Extrude LDPE F410 95wt%, nano-silver antibacterial masterbatch Antim-PE 0.5wt% (made by Sono Technology, nano-level, silver content 20wt%) 50% active titanium dioxide masterbatch 4.5% in an extruder, extrusion speed 10 m / min, and passed through the casting die to obtain a three-dimensional thickness of 20 microns and a basis weight of 20 g / m 2 The temperature of each section of the extruder is controlled as follows:

[0058] Feeding section: 199℃

[0059] Compression section: 210℃

[0060] Metering section: 215℃

[0061] Casting die: 230°C.

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Abstract

The present invention relates to a new type thermoplastic resin antibacterial film, in which 10ppm-20% of antibacterial agent is contained. The antibacterial film is made up by using antibacterial material and thermoplastic resin material through the process of coextrusion casting. It can be used in sanitary materials, such as sanitary napking, sanitary protective pad, baby paper diaper, adult urinary incontinence product, food package material and medicine package material. The film has the functions of killing bacteria and preventing molding.

Description

technical field [0001] The present invention relates to an antibacterial film and a manufacturing method thereof, more particularly, the present invention relates to an antibacterial film containing an antibacterial material and a thermoplastic resin. The film has the functions of killing bacteria and preventing mildew, and is mainly used for sanitation Materials such as women's sanitary napkins, sanitary pads, baby diapers and adult incontinence products, food packaging materials such as plastic wrap, food packaging bags, pharmaceutical packaging and other disposable packaging materials. Background technique [0002] With the improvement of people's awareness of the antibacterial and antibacterial effects of sanitary materials and food packaging, antibacterial films have attracted more and more attention. [0003] Traditional antibacterial films are generally obtained by directly coating antibacterial components on plastic films. Chinese patent application CN2497755 disclos...

Claims

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Application Information

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IPC IPC(8): C08J5/18C08K3/08C08L23/00C08L27/06
Inventor 刘跃顺谢巧锋张武陵
Owner GUANGZHOU ZHUODEJIA FILM
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