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Preparation method of antibacterial coating for food packaging

An antibacterial coating and food packaging technology, which is applied in the field of preparation of antibacterial coatings for food packaging, can solve the problems of limited antibacterial and antibacterial durability, high price, unfavorable human health, etc., achieve good antibacterial effect, and the raw materials are safe and non-toxic Effect

Active Publication Date: 2018-01-30
广东威雅包装印刷有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, antibacterial agents for food still have problems such as high price, bad for human health, limited antibacterial and antibacterial persistence, and unstable performance.

Method used

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  • Preparation method of antibacterial coating for food packaging

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A preparation method for an antibacterial coating for food packaging, comprising the following preparation steps:

[0026] (1) Add 2 parts by weight of vermiculite powder and 0.8 parts by weight of titanium dioxide to 0.1 part by weight of plant essential oil, stir and mix at 50°C for 10 hours, then add 4 parts by weight of calcium chloride and 1.5 parts by weight of polyvinyl alcohol, and continue stirring Mixed for 3h, cooled to room temperature to obtain modified material I;

[0027] (2) Add 2.1 parts by weight of oxidized starch, 1.6 parts by weight of glucomannan, 4.3 parts by weight of locust bean gum, 3.5 parts by weight of tamarind gum and 0.7 parts by weight of organic acid into 24 parts by weight of deionized water. Stir for 1 hour, then add 1.6 parts by weight of polyethyleneimine, 0.4 parts by weight of hydroxysafflower yellow A and 16 parts by weight of ethanol, and stir for 30 minutes at 200 rpm;

[0028] (3) Add 3.5 parts by weight of nano-silver modifie...

Embodiment 2

[0033] A preparation method for an antibacterial coating for food packaging, comprising the following preparation steps:

[0034] (1) Add 8 parts by weight of vermiculite powder and 4 parts by weight of titanium dioxide to 0.5 parts by weight of plant essential oil, stir and mix at 65°C for 24 hours, then add 12 parts by weight of calcium chloride and 5 parts by weight of polyvinyl alcohol, and continue stirring Mixed for 6h, cooled to room temperature to obtain modified material I;

[0035] (2) Add 5.4 parts by weight of oxidized starch, 4 parts by weight of glucomannan, 7.1 parts by weight of locust bean gum, 8 parts by weight of tamarind gum and 2.6 parts by weight of organic acid into 35 parts by weight of deionized water. Stir for 3 hours, then add 3.8 parts by weight of polyethyleneimine, 1.2 parts by weight of hydroxysafflower yellow A and 22 parts by weight of ethanol, and stir for 80 minutes at 500 rpm;

[0036] (3) Add 3.5-6.2 parts by weight of nano-silver modified...

Embodiment 3

[0041] A preparation method for an antibacterial coating for food packaging, comprising the following preparation steps:

[0042] (1) Add 2.3 parts by weight of vermiculite powder and 1.1 parts by weight of titanium dioxide to 0.2 parts by weight of plant essential oil, stir and mix at 55°C for 18 hours, then add 4.8 parts by weight of calcium chloride and 1.8 parts by weight of polyvinyl alcohol, and continue stirring Mixed for 3h, cooled to room temperature to obtain modified material I;

[0043] (2) Add 2.3 parts by weight of oxidized starch, 1.8 parts by weight of glucomannan, 4.5 parts by weight of locust bean gum, 3.8 parts by weight of tamarind seed gum and 0.9 parts by weight of organic acid into 26 parts by weight of deionized water, and heat at 58°C Stir for 3 hours, then add 1.8 parts by weight of polyethyleneimine, 0.6 parts by weight of hydroxysafflower yellow A and 18 parts by weight of ethanol, and stir for 65 minutes at 400 rpm;

[0044](3) Add 3.8 parts by we...

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Abstract

The invention discloses a preparation method of antibacterial coating for food packaging. The preparation method comprises the following preparation steps: (1) adding vermiculite powder and titanium dioxide into plant essential oil, stirring, then adding calcium chloride and polyvinyl alcohol, and stirring to obtain a modified material I; (2) adding oxidized starch, konjac glucomannan, locust beangum, tamarind gum and organic acid into deionized water, stirring, then adding polyethyleneimine, hydroxysafflor yellow A and ethanol, and stirring; (3) adding nano-silver modified hydroxy-terminatedpoly-dimethylsiloxane and the modified material I obtained in the step (1) in the step (2), and stirring; (4) lastly, adding dibutyl sebacate and silicone polyether, stirring, grinding and standing for defoaming to obtain the antibacterial coating. The antibacterial coating prepared by the method has high antibacterial property, has antibacterial duration being up to 18 months, is prepared from safe and nontoxic raw materials, and is very suitable for the application demand in the food packaging field.

Description

technical field [0001] The invention belongs to the technical field of paint preparation, and in particular relates to a preparation method of an antibacterial paint for food packaging. Background technique [0002] At present, the main source of food packaging materials is petroleum-based polymers. With the increase of consumption, the environmental pollution and food safety problems caused by this material have become more and more prominent. The birth of edible fresh-keeping packaging materials not only solves the problem of safe and rapid degradation of food packaging materials, but also acts as a barrier to ensure food safety. However, conventional edible fresh-keeping packaging materials still have defects in mechanical properties and moisture resistance. [0003] The combination of antibacterial materials and packaging technology can endow the packaging materials with durable antibacterial and bactericidal properties, so that the packaged products can obtain better q...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D105/14C09D103/10C09D179/02C09D183/04C09D183/12C09D129/04C09D191/00C09D5/14C09D7/61C09D7/63
Inventor 史闵新
Owner 广东威雅包装印刷有限公司
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