Mildew-proof preservative paper and preparation method and preparation device thereof

A technology for preparing a device and fresh-keeping paper, applied in the field of packaging, can solve the problems of short storage period, inability to preserve freshness, inability to maintain constant moisture, etc., and achieve the effects of preventing mildew, easy to control preparation conditions, and small pores

Inactive Publication Date: 2017-05-10
CHANGDE JINRUN 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 packaging of paper materials is used for items with a short storage period such as fruits, bread, and tobacco leaves, which are prone to short-term mildew and need to be eaten in time, they cannot keep the moisture constant and prevent mildew. Can't keep fresh

Method used

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  • Mildew-proof preservative paper and preparation method and preparation device thereof
  • Mildew-proof preservative paper and preparation method and preparation device thereof
  • Mildew-proof preservative paper and preparation method and preparation device thereof

Examples

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preparation example Construction

[0053] refer to figure 2 , the preparation method of the above-mentioned mildew-proof and fresh-keeping coating of the present invention, comprises the following steps.

[0054] Step S110: Provide raw materials, including 20%-60% of resin, 30%-70% of solvent, 0.5%-10% of anti-fungal agent and 0.3%-5% of auxiliary agent by weight percentage.

[0055] Step S120: Mix the resin, solvent and additives uniformly to obtain a mixed solution.

[0056] Specifically, the temperature at which the resin, solvent and additives are mixed in step S120 is 30-65°C.

[0057] Specifically, step S120 includes the following steps: dissolving the resin in a solvent, stirring at a rotation speed of 100-300 rpm and heating to 30-65°C; adding additives, and continuing at a rotation speed of 200-400 rpm Stir for 30-60 minutes to obtain a mixed solution. The temperature and stirring intensity are controlled in this way to promote the uniform mixing of the mixed liquid.

[0058] Specifically, when th...

Embodiment 1

[0098] The raw materials are provided, and the content by weight percentage includes: 60% of polyurethane resin, 30% of water, 5% of gingerol, and 4% of Tween.

[0099] Dissolve the polyurethane resin in water, stir at a speed of 300 rpm and heat to 50°C; add additives, and continue stirring for 50 min at a speed of 300 rpm to obtain a mixed solution. The pH of the mixture was 7 after adding triethylamine.

[0100] Gingerol is added dropwise to the mixed solution with stirring at a speed of 600 rpm. After the addition of gingerol is completed, the mixed solution and gingerol are continuously stirred and mixed at a speed of 600 rpm. Cool down to obtain the anti-mildew and fresh-keeping coating.

[0101] Adopt preparation device 20, by 10g / m 2 The coating amount is coated on one surface of the paper base layer and treated at 80°C, 90°C, 120°C, 100°C and 85°C for 1.2s respectively to obtain an anti-mold and fresh-keeping coating; it will include the information layer and the re...

Embodiment 2

[0103] Raw materials are provided, including by weight percentage: 47% of polyvinyl alcohol 2488 resin, 40% of water, 8% of the total amount of sorbic acid and turmeric alcohol, 2% of Tween and 3% of sodium bicarbonate.

[0104] Dissolve polyvinyl alcohol 2488 resin in water, stir at a speed of 100 rpm and heat to 65°C; add additives, and continue stirring for 30 minutes at a speed of 200 rpm to obtain a mixed solution. The pH of the mixture was 8 after adding sodium bicarbonate.

[0105] Sorbic acid and turmeric alcohol are added dropwise under the stirring of 800 rev / mins with rotating speed in mixed solution, after sorbic acid and turmeric alcohol dropwise are finished, mixed solution, sorbic acid and turmeric alcohol are continued to rotate at a speed of 800 rpm. Stir and mix for 2 hours at 500-800 rpm. Cool down to obtain the anti-mildew and fresh-keeping coating.

[0106] Adopt preparation device 20, by 1g / m 2 The coating amount is coated on one surface of the paper b...

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Abstract

The invention provides a mildew-proof preservative paper and a preparation method and a preparation device thereof. The preparation device comprises a paper-based layer, a decorative coating and a mildew-proof preservative coating, wherein the mildew-proof preservative coating is arranged one surface of the paper-based layer, the decorative coating is arranged on the other surface of the paper-based layer, the mildew-proof preservative coating is made from a mildew-proof preservative coating raw material and is prepared from, by weight, 20%-60% of resin, 30%-70% of solvent, 0.5%-10% of mildew preventive and 0.3%-5% of additive, the resin is at least one of polyurethane resin, acrylic ester copolymer, polyvinyl alcohol, polyvinylidene chloride, modified polyethylene vinylidene chloride, vinyl-vinyl acetate copolymer, polyvinyl acetate copolymer and vinyl acetate-butyl copolymer, and the solvent is at least one of water and ethanol. The surface of the obtained mildew-proof preservative coating is dense and provided with small pores, the mildew-proof preservative coating has the good effect keeping moisture constant, the mildew preventive is dispersed inside resin, mildewing can be also prevented, and further a good preservation effect is reached.

Description

technical field [0001] The invention relates to the technical field of packaging, in particular to a mildew-proof fresh-keeping paper, a preparation method and a preparation device thereof. Background technique [0002] Commonly used packaging materials include plastic materials, paper and other materials, among which paper packaging is widely used due to its environmental protection and excellent texture. However, when the packaging of paper materials is used for items with a short storage period such as fruits, bread, and tobacco leaves, which are prone to short-term mildew and need to be eaten in time, they cannot keep the moisture constant and prevent mildew. Can't keep fresh. Contents of the invention [0003] Based on this, it is necessary to provide a mildew-proof fresh-keeping paper that keeps moisture constant and can prevent mildew and its preparation method and preparation device. [0004] A mildew-proof and fresh-keeping paper, comprising a paper base, a deco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/10D21H19/84D21H19/12D21H19/14D21H19/20D21H19/24D21H21/36D21H21/14D21H19/40D21H19/36D21H19/62D21H19/58C09D175/04C09D133/04C09D129/04C09D127/08C09D127/22C09D123/08C09D131/04C09D5/14
CPCC09D5/14C09D123/0853C09D127/08C09D127/22C09D129/04C09D131/04C09D133/04C09D175/04D21H19/12D21H19/14D21H19/20D21H19/24D21H19/36D21H19/40D21H19/58D21H19/62D21H19/84D21H21/14D21H21/36D21H27/10
Inventor 田璐钟文陈华章杰
Owner CHANGDE JINRUN NEW MATERIAL TECH CO LTD
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