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Composite antibacterial polypropylene fresh-keeping box and preparation method thereof

A composite antibacterial and polypropylene technology, applied in coatings, biocide-containing paints, antifouling/underwater coatings, etc., can solve problems such as easy migration and precipitation, toxic gases, and unsafe use

Inactive Publication Date: 2017-11-24
WUHU BLUE SKY ENG PLASTIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In this regard, people have carried out extensive research. At present, it is more common to add chemical antibacterial agents to the materials for making fresh-keeping boxes and form them together with fresh-keeping boxes. It will produce some toxic and irritating gases, and it is easy to migrate and precipitate when added to plastic packaging products, and even run into packaged food, fruits and vegetables, medical drugs, etc., causing unsafe use. These organic antibacterial agents are used in food Packaging and medical fields are generally not allowed to add

Method used

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  • Composite antibacterial polypropylene fresh-keeping box and preparation method thereof

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[0012] In order to achieve the above object, the invention provides a preparation method of a composite antibacterial polypropylene fresh-keeping box, comprising the following steps: (1) pulverizing dandelion, ground gall grass, peppermint and oleander, soaking in ethanol solution, filtering , to obtain filtrate M1; (2) mix agarose with sodium carbonate and water, then add glacial acetic acid to react to obtain M2; (3) mix M1, M2, zinc salt, reducing agent, methylisothiazolinone and Surfactants are mixed to obtain M3; (4) M3 is coated on the inner wall of a polypropylene fresh-keeping box and dried.

[0013] In the above-mentioned technical scheme, dandelion, dandelion, mint and oleander can be fresh finished products, and can also be dried dandelion, dandelion, mint and oleander, in order to facilitate the preservation of raw materials in daily industrial production, preferably dandelion, dandelion, peppermint and oleander are dried dandelion, dandelion, peppermint and oleand...

Embodiment 1

[0035] The preparation of composite antibacterial polypropylene fresh-keeping box comprises the following steps:

[0036] (1) In parts by weight, 14 parts of dandelion, 6 parts of dandelion, 6 parts of peppermint, and 5 parts of oleander are pulverized to an average particle size of less than 0.5mm, and they are placed in 50 parts of 68% ethanol aqueous solution in 50 parts by volume. Soak at 50°C for 24 hours, filter to obtain filtrate M1;

[0037] (2) In parts by weight, mix 25 parts of agarose, 4 parts of sodium carbonate, and 45 parts of water, then add 6 parts of glacial acetic acid and react for 18 minutes to obtain M2;

[0038] (3) In parts by weight, 30 parts of M1, 12 parts of M2, 0.02 parts of zinc citrate, 0.15 parts of glucose, 1.5 parts of methylisothiazolinone, and 2.5 parts of dodecyldimethylbenzyl ammonium chloride Mix at 70°C for 38 minutes to obtain M3;

[0039] (4) Coat M3 on the inner wall of the polypropylene crisper at 110°C, and the coating amount of M...

Embodiment 2

[0041] The preparation of composite antibacterial polypropylene fresh-keeping box comprises the following steps:

[0042] (1) In parts by weight, 16 parts of dandelion, 7 parts of Echinacea, 8 parts of peppermint, and 6 parts of oleander are crushed to an average particle size of less than 0.5mm, and put in 60 parts of 75% ethanol aqueous solution by volume Soak at 55°C for 36h, filter to obtain filtrate M1;

[0043] (2) In parts by weight, mix 30 parts of agarose, 5 parts of sodium carbonate, and 50 parts of water, then add 7 parts of glacial acetic acid and react for 30 minutes to obtain M2;

[0044] (3) In parts by weight, 36 parts of M1, 15 parts of M2, 0.03 parts of zinc citrate, 0.2 parts of glucose, 2 parts of methylisothiazolinone, and 3 parts of dodecyldimethylbenzyl ammonium chloride in Mix at 80°C for 45 minutes to obtain M3;

[0045] (4) Coat M3 on the inner wall of the polypropylene fresh-keeping box at 120°C, and the coating amount of M3 is 18g / m 2 , dried at ...

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Abstract

The invention discloses a composite antibacterial polypropylene fresh-keeping box and a preparation method thereof. A composite antibacterial material is prepared from antibacterial components extracted from herba taraxaci, herba elephantopi, herba menthae and folium seu cortex nerii indici, as well as zinc salt and other additives; in addition, the materials are dissolved in agarose having a porous structure and coat the surface of the fresh-keeping box. During daily use, the agarose absorbs water to keep the articles in the fresh-keeping box dry; on the other hand, even if bacteria grow, the bacteria grow on the surface of the fresh-keeping box having agarose, but the agarose has bacteriostatic and bactericidal active substances to kill the bacteria in the agarose; thus, an environment adverse to the growth of bacteria is formed while a purpose of sterilization is achieved; the prepared fresh-keeping box is environment-friendly, safe, green and pollution-free, low in cost since the plant raw materials are common plant raw materials, simple in production process, and relatively high in application value.

Description

technical field [0001] The invention relates to an antibacterial polypropylene fresh-keeping box, in particular to a composite antibacterial polypropylene fresh-keeping box and a preparation method thereof. Background technique [0002] At present, with the increasing development of online shopping, more and more people choose to buy fresh products online. However, due to changes in the climate and environment during transportation, the products may deteriorate, especially some fresh fruits and vegetables, which need to invest a lot of resources. Antibacterial and fresh-keeping storage and transportation of it will virtually increase costs, reduce profits, and more importantly, waste a lot of extra resources. Similarly, high-end cosmetics and precious biological specimens contain biological factors, which are extremely vulnerable to microorganisms, resulting in irreparable losses. [0003] With the development of science and technology and the improvement of people's living...

Claims

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Application Information

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IPC IPC(8): C08J7/04C09D105/12C09D5/14C08L23/12
CPCC08J7/0427C08J2323/12C08J2405/12C09D5/14C09D105/12
Inventor 钱万水
Owner WUHU BLUE SKY ENG PLASTIC CO LTD
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