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Film for antibacterial packaging bag and preparation method thereof

A packaging bag and film technology, which is applied in the field of film for antibacterial packaging bags and its preparation, can solve the problems of high cost, poor mechanical properties, and injury to pregnant women, and achieve low production cost and good antibacterial effect

Inactive Publication Date: 2020-07-14
深圳市海轩威包装有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main material of such a plastic bag can be degraded, but excessive lithium carbonate can easily damage the gastrointestinal tract, heart, kidneys and nervous system, especially for pregnant women
[0007] In the above technical solutions, the plastic film is either added with some toxic organic antibacterial agents, or uses high-cost antibacterial materials to make packaging bags, or has poor mechanical properties, and there is a certain room for improvement.

Method used

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  • Film for antibacterial packaging bag and preparation method thereof
  • Film for antibacterial packaging bag and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A film for antibacterial packaging bags is prepared by mixing the following components in parts by mass:

[0043] 10 parts of low-density polyethylene;

[0044] 45 parts of high-density polyethylene;

[0045] 8 parts of maleic anhydride grafted polyethylene;

[0046] 18 parts of thermoplastic polyurethane elastic rubber;

[0047] 3 parts of filler;

[0048] 12 parts of nano zinc oxide-chitosan composite antibacterial agent.

[0049] The filler in this embodiment is 2000 mesh calcium carbonate.

[0050] A preparation method of a film for an antibacterial packaging bag, comprising the following steps:

[0051] Step 1, be 90% with deacetylation degree, the chitosan raw material that molecular weight is 500kDa is dissolved in solid content and is 2% styrene-acrylic acid ester aqueous solution, drops into 1M sodium hydroxide solution and adjusts PH to alkalescence to water bath, obtains For the blended solution, the quality of the chitosan raw material accounts for 1% of...

Embodiment 2

[0055] The preparation method of this embodiment and embodiment 1, the proportioning of each component is basically the same, and the filler of this embodiment is the blend that zinc stearate, calcium carbonate mix according to mass ratio 1:1. Zinc stearate needs to pass through the molecular sieve screening of 45 μ m, 40 μ m successively, and the particle diameter that obtains zinc stearate is 40-45 μ m, and calcium carbonate is selected 2500 mesh calcium carbonates for use. The chitosan raw material of this embodiment selects a chitosan raw material with a degree of deacetylation of 95% and a molecular weight of 1000 kDa.

Embodiment 3

[0057] This example is basically the same as Example 1, with slight differences in the distribution ratio of each component and the condition selection of the preparation process. A kind of antibacterial packaging film of the present embodiment is prepared by mixing the components of the following parts by mass:

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Abstract

The invention relates to the field of packaging bags, in particular to a film for an antibacterial packaging bag and a preparation method of the film. The film for the antibacterial packaging bag is prepared by mixing the following components in parts by mass: 10-15 parts of low-density polyethylene; 35 to 45 parts of high density polyethylene; 5 to 10 parts of maleic anhydride grafted polyethylene; 10 to 18 parts of thermoplastic polyurethane elastic rubber; 3-6 parts of a filler; and 8-12 parts of a nano zinc oxide-chitosan composite antibacterial agent. The preparation method of the film for the antibacterial packaging bag comprises the steps of preparation of the nano zinc oxide-chitosan composite antibacterial agent, film extrusion, film casting, film cutting and the like. The film islow in production cost, good in antibacterial effect, non-toxic, convenient and fast to use and capable of being used for manufacturing food packaging bags.

Description

technical field [0001] The invention relates to the field of packaging bags, more specifically, it relates to a film for antibacterial packaging bags and a preparation method thereof. Background technique [0002] Packaging bags are industrial products widely used in people's daily life. Many types of packaging bags need to have antibacterial function to meet the packaging needs of food, medicinal materials and other items. [0003] In the prior art, the Chinese invention patent whose authorized notification number is CN1238405C discloses a kind of antibacterial film and its manufacturing method. One or more of ammonium salt antibacterial agents, silver salts, zinc salts, copper salts, silver oxide, zinc oxide and copper oxide. Such a technical scheme adds a large amount of antibacterial agents and causes the mechanical properties of the host material to decline. [0004] The Chinese invention patent with the authorized notification number CN104558663B discloses a method f...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L51/06C08L75/04C08L5/08C08K5/098C08K3/26C08K9/10C08K3/22C08J5/18B65D65/38
CPCC08J5/18B65D65/38C08J2323/06C08J2423/06C08J2451/06C08J2405/08C08K2003/265C08K2201/011C08K2003/2296C08K5/098C08K9/10
Inventor 周育良周文彬
Owner 深圳市海轩威包装有限公司
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