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Mildew-proof and fresh-keeping coated paper and processing method thereof

A technology of coating paper and anti-mildew coating, applied in anti-biological reagent addition, paper, papermaking, etc., can solve the problem of short duration of anti-mildew effect, achieve good water and oxygen barrier, avoid damage, and delay oxidative deterioration Effect

Inactive Publication Date: 2018-07-24
CHANGDE JINDE NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the antifungal agent is used directly, the duration of the antifungal effect is short. Therefore, how to make the antifungal agent maintain its antibacterial and antifungal effect for a long time has become a key and difficult point to be solved urgently

Method used

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  • Mildew-proof and fresh-keeping coated paper and processing method thereof
  • Mildew-proof and fresh-keeping coated paper and processing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Mix 50 parts of polyvinylidene chloride emulsion and 10 parts of ethylene-vinyl acetate copolymer emulsion, add 0.5 part of emulsifier and 0.05 part of defoamer, stir at 50 rpm for 30 minutes, mix well, add 1 part of isocyanate was stirred at 80 rpm for 30 minutes, and 5 parts of microencapsulated antifungal agents were added, wherein the microencapsulated antifungal agents were ethylparaben, Kathon, Nano-titanium dioxide composite-chitosan microcapsules, after stirring and dispersing evenly, the anti-mildew and fresh-keeping coating can be obtained.

[0054] Press the anti-mold coating to 6g / m 2 coated on the surface of the base paper, and then treated at 80°C, 90°C, 110°C, 120°C and 90°C for 1.5s respectively to form an anti-mold and fresh-keeping coating, and the anti-mold and fresh-keeping coated paper was obtained.

Embodiment 2

[0056] Mix 50 parts of polyvinylidene chloride emulsion and 10 parts of ethylene-vinyl acetate copolymer emulsion, add 0.5 part of emulsifier and 0.05 part of defoamer, stir at 50 rpm for 30 minutes, mix well, add 1 part of isocyanate was stirred at 80 rpm for 30 minutes, and 5 parts of microencapsulated antifungal agents were added, wherein the microencapsulated antifungal agents were ethylparaben, Kathon, Nano-titanium dioxide composite-chitosan microcapsules, after stirring and dispersing evenly, the anti-mildew and fresh-keeping coating can be obtained.

[0057] Press the anti-mold coating to 6g / m 2 coated on the surface of the base paper, and then treated at 80°C, 90°C, 110°C, 120°C and 90°C for 1.5s respectively to form an anti-mold and fresh-keeping coating, and the anti-mold and fresh-keeping coated paper was obtained.

Embodiment 3

[0059] Mix 50 parts of polyvinylidene chloride emulsion and 10 parts of ethylene-vinyl acetate copolymer emulsion, add 0.5 part of emulsifier and 0.05 part of defoamer, stir at 50 rpm for 30 minutes, mix well, add 1 part of isocyanate was stirred at 80 rpm for 30 minutes, and 5 parts of microencapsulated antifungal agents were added, wherein the microencapsulated antifungal agents were ethylparaben, Kathon, Nano-titanium dioxide composite-chitosan microcapsules, after stirring and dispersing evenly, the anti-mildew and fresh-keeping coating can be obtained.

[0060] Press the anti-mold coating to 6g / m 2 coated on the surface of the base paper, and then treated at 80°C, 90°C, 110°C, 120°C and 90°C for 1.5s respectively to form an anti-mold and fresh-keeping coating, and the anti-mold and fresh-keeping coated paper was obtained.

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Abstract

The invention discloses mildew-proof and fresh-keeping coated paper and a processing method thereof. The mildew-proof and fresh-keeping coated paper is prepared from a mildew-proof and fresh-keeping coated paper raw paper layer and a blocking mildew-proof coating formed on the raw paper layer, wherein the blocking mildew-proof coating is prepared from the following components in parts by weight: 50 to 60 parts of polyvinylidene chloride emulsion, 10 to 20 parts of an ethylene-vinyl acetate copolymer emulsion, 1 to 5 parts of isocyanate, 5 to 20 parts of a micro-encapsulated mildew preventive,0.5 to 2 parts of emulsifying agent and 0.05 to 0.5 part of de-foaming agent; a capsule membrane material of the micro-encapsulated mildew preventive is cyclodextrin or chitosan; a capsule core of themicro-encapsulated mildew preventive is selected from at least one of an organic mildew preventive and an inorganic mildew preventive. The mildew preventive in the mildew-proof coating of the mildew-proof and fresh-keeping coated paper is subjected to micro-encapsulation treatment and the mildew preventive is covered with a bag film, so that the slow release and mildew prevention effects are realized and the mildew-proof and fresh-keeping coated paper can keep antibacterial and mildew-proof effects for a long time; the mildew-proof and fresh-keeping coating has good water-oxygen stopping performance and can keep moisture in packages constant.

Description

technical field [0001] The invention relates to the technical field of packaging materials, in particular to a mold-proof and fresh-keeping coated paper and a processing method thereof. Background technique [0002] As we all know, for most foods, the excessive growth and reproduction of microorganisms is the main cause of food deterioration. In the storage and transportation of food, if the temperature, humidity and gas volume are appropriate, microorganisms will grow and reproduce in large numbers, and food deterioration will be accelerated. As the last barrier between food and the external environment, food packaging has an extremely important relationship with the maintenance of food quality. [0003] As people's awareness of environmental protection and health increases, the requirements for packaging are also getting higher and higher. As a kind of green and environment-friendly packaging material, anti-mildew coated paper has become the research focus of scholars at...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H19/20D21H21/36
CPCD21H19/20D21H21/36
Inventor 余赞钟文田璐杜建军韦雪雪张勇军罗臻钱正宇
Owner CHANGDE JINDE NEW MATERIAL TECH CO LTD
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