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A kind of polyethylene preservative film and its preparation method and application

A technology of polyethylene film and plastic wrap, applied in the direction of coating, etc., to achieve the effects of enhanced interaction, high product order, and improved hydrophilicity

Active Publication Date: 2021-03-30
ZHONGKAI UNIV OF AGRI & ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, there is no layer-by-layer self-assembly technology in the prior art to combine TiO 2 , Chitosan, etc. introduced into PE film and obtained good antibacterial effect

Method used

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  • A kind of polyethylene preservative film and its preparation method and application
  • A kind of polyethylene preservative film and its preparation method and application
  • A kind of polyethylene preservative film and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] The polyethylene cling film provided in this embodiment is composed of a polyethylene film, an acrylic film and at least one layer of titanium dioxide-chitosan composite film.

[0057] Wherein the polyethylene film is corona treated polyethylene film.

[0058] The acrylic film is a water-based acrylic film.

[0059] The preparation method of this polyethylene preservative film, comprises the following steps:

[0060] (1) Weigh 0.2g chitosan (Qufu Saide Biotechnology Co., Ltd., but not limited to this company) and dissolve it in an acetic acid solution with a concentration (mass percentage) of 2% (10mL) (dissolved in distilled water ), then stirred in a magnetic stirrer for 1 hour (the rotating speed of the magnetic stirrer was 800~1000rpm), and was mixed with a chitosan solution whose concentration of 10mL was 2% (w / v);

[0061] (2) Use a pipette to measure 2 mL of titanium dioxide stock solution (from a Japanese company, but not limited to this company) and dissolve ...

Embodiment 2

[0065] Different from Example 1, chitosan CTS in step (3): titanium dioxide TiO 2 The volume ratios are 8:0, 4:4 and 0:8.

Embodiment 3

[0067] Different from Example 2, chitosan CTS in step (3): titanium dioxide TiO 2 The volume ratios are 8:0, 2:6 and 0:8.

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Abstract

The invention discloses a polyethylene preservative film. The polyethylene preservative film consists of a polyethylene film, an acrylic acid film and at least one layer of titanium dioxide-chitosan composite film sequentially from bottom to top. The invention also discloses a preparation method of the polyethylene preservative film as well as application of the polyethylene preservative film to preparation packaging materials with antibacterial effect and to preservation of chilled fresh meat.

Description

technical field [0001] The invention belongs to the technical field of plastic wrap, and in particular relates to a polyethylene plastic wrap and a preparation method and application thereof. Background technique [0002] In the application of polymer packaging materials, polyethylene (PE) film is widely used due to its chemical resistance, high impact strength, excellent mechanical properties, large supply and low cost. Despite these outstanding features, PE film itself is not antibacterial. For this reason, in order to study the effective method of preparing antibacterial PE film, many scholars have carried out extensive research. Antimicrobial packaging methods can be divided into two types. The first can be achieved by incorporation and immobilization of antimicrobial agents into polymer films, while others can be achieved through surface modification and surface coating. By the first method, several antimicrobial agents can be used, such as sorbic anhydride, and lact...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J7/056C08J5/18C08L23/06C08L33/00C08L5/08C08K3/22
CPCC08J5/18C08J7/042C08J2323/06C08J2405/08C08J2433/00C08K2003/2241
Inventor 肖乃玉何娟马志芳李湘銮徐依斌张雪琴钟乐张文
Owner ZHONGKAI UNIV OF AGRI & ENG
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