Mildew-proof antibacterial EVA (ethylene-vinyl acetate) or PEVA (polyethylene vinyl acetate) film

A technology of anti-mildew and anti-bacterial film, which is applied in the field of anti-mold and anti-bacterial EVA or PEVA film, can solve the problems of endangering people's health, mildew, affecting the tensile properties and tearing properties of the film, and achieves excellent anti-mold and anti-bacterial properties, The effect of high impact strength and tear strength, broad application prospects and market demand

Active Publication Date: 2016-08-24
DONG GUAN KAI YUAN PLASTICATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] EVA film may cause harmful bacteria and other microorganisms to multiply under suitable temperature and humidity conditions, resulting in mildew and endangering people's health. In the prior art, in order to improve the anti-mildew and anti-bacterial performance of EVA film, inorganic anti-bacterial is usually added to the raw materials. Agents, while inorganic antibacterial agents such as silver antibacterial agents have the advantages of heat resistance and durability, but they will affect the tensile properties and tear properties of the film

Method used

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  • Mildew-proof antibacterial EVA (ethylene-vinyl acetate) or PEVA (polyethylene vinyl acetate) film
  • Mildew-proof antibacterial EVA (ethylene-vinyl acetate) or PEVA (polyethylene vinyl acetate) film
  • Mildew-proof antibacterial EVA (ethylene-vinyl acetate) or PEVA (polyethylene vinyl acetate) film

Examples

Experimental program
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Effect test

Embodiment 1

[0019] The EVA film of this embodiment is prepared by cast film forming process. The barrel of the extruder is divided into a feeding section, a plasticizing section and a homogenizing section. The temperature of the feeding section is 150-180° C. ~220°C, the temperature of the homogenization section is 220~240°C; the temperature in the middle of the T-shaped molding die is 230°C, the temperature at both ends is 235°C, and the roll surface temperature of the casting cooling roll is 60°C.

[0020] The raw material formula of EVA film is as follows:

[0021] Ethylene-vinyl acetate copolymer (EVA): 100 parts by weight;

[0022] Low-density polyethylene (LDPE): 10 parts by weight;

[0023] Polyethylene grafted GMA: 0.5 parts by weight;

[0024] Zinc pyrithione: 1.5 parts by weight;

[0025] N-(2-mercaptoethyl)acrylamide: 5.0 parts by weight;

[0026] Triallyl isocyanate: 1.5 parts by weight;

[0027] 2-vinyl-4,6-diamino-1,3,5-triazine: 1.0 parts by weight.

Embodiment 2

[0029] The EVA film of this embodiment is prepared by cast film forming process. The barrel of the extruder is divided into a feeding section, a plasticizing section and a homogenizing section. The temperature of the feeding section is 150-180° C. ~220°C, the temperature of the homogenization section is 220~240°C; the temperature in the middle of the T-shaped molding die is 230°C, the temperature at both ends is 235°C, and the roll surface temperature of the casting cooling roll is 60°C.

[0030] The raw material formula of EVA film is as follows:

[0031] Ethylene-vinyl acetate copolymer (EVA): 100 parts by weight;

[0032] Low-density polyethylene (LDPE): 20 parts by weight;

[0033] Polyethylene grafted GMA: 1.0 parts by weight;

[0034] Zinc pyrithione: 1.5 parts by weight;

[0035] N-(4-mercaptophenyl)acrylamide: 3.0 parts by weight;

[0036] Triallyl isocyanate: 2.0 parts by weight;

[0037] 2-vinyl-4,6-diamino-1,3,5-triazine: 1.5 parts by weight.

Embodiment 3

[0039] The EVA film of this embodiment is prepared by cast film forming process. The barrel of the extruder is divided into a feeding section, a plasticizing section and a homogenizing section. The temperature of the feeding section is 150-180° C. ~220°C, the temperature of the homogenization section is 220~240°C; the temperature in the middle of the T-shaped molding die is 230°C, the temperature at both ends is 235°C, and the roll surface temperature of the casting cooling roll is 60°C.

[0040] The raw material formula of EVA film is as follows:

[0041] Ethylene-vinyl acetate copolymer (EVA): 100 parts by weight;

[0042] Low-density polyethylene (LDPE): 15 parts by weight;

[0043] Polyethylene grafted GMA: 0.8 parts by weight;

[0044] Zinc pyrithione: 1.5 parts by weight;

[0045] Maleic acid mono-2-mercaptoethylamide: 4.0 parts by weight;

[0046] Triallyl isocyanate: 1.8 parts by weight;

[0047] 2-vinyl-4,6-diamino-1,3,5-triazine: 1.2 parts by weight.

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PUM

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Abstract

The invention relates to mildew-proof antibacterial EVA (ethylene-vinyl acetate) or PEVA (polyethylene vinyl acetate) film and belongs to the technical field of film materials. The mildew-proof antibacterial EVA film is prepared by film casting process from the materials: ethylene-vinyl acetate copolymer, low-density polyethylene, polyethylene grafted GMA, a bactericide, a compound including thiol groups or sulfhydryl groups, triallyl isocyanurate, 2-vinyl-4,6-diamino-1,3,5-triazine and an optional aid. The mildew-proof antibacterial EVA film described herein has excellent mildew-proof and antibacterial property, high impact strength and tearing strength and good comprehensive performance, can meet the requirement on use in life or industrial environments and has a promising application prospect and wide market demand.

Description

technical field [0001] The invention relates to the technical field of film materials, more specifically, the invention relates to a mildewproof and antibacterial EVA or PEVA film. Background technique [0002] EVA is the abbreviation of ethylene-vinyl acetate copolymer, and the content of vinyl acetate (VA) in the copolymer is generally 5% to 40%. Compared with polyethylene, EVA has reduced high crystallinity and improved flexibility, impact resistance, filler compatibility and heat sealing performance due to the introduction of vinyl acetate monomer in the molecular chain. EVA still has good flexibility at -50°C, good transparency and surface gloss, good chemical stability, anti-aging and non-toxic, good coloring and molding processability. [0003] EVA film may cause harmful bacteria and other microorganisms to multiply under suitable temperature and humidity conditions, resulting in mildew and endangering people's health. In the prior art, in order to improve the anti-m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L23/06C08L51/06C08K13/06C08K9/12C08K3/08C08K5/00C08K5/3492C08K5/372C08K5/378B29C47/92B29L7/00B29C48/92
CPCB29C48/92B29C2948/92704B29L2007/00C08J5/18C08J2323/08C08K2201/014C08K2201/017C08L23/0853C08L2205/03C08L2205/16C08L2207/066C08L23/06C08L51/06C08K5/00C08K5/34924C08K5/3492C08K5/3725C08K5/378C08K13/06C08K9/12C08K2003/0806
Inventor 王家金
Owner DONG GUAN KAI YUAN PLASTICATION TECH
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