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Matt packing film and preparation method thereof

A packaging film and matting technology, which is applied in the field of matt packaging film and its preparation, can solve the problems of matt packaging film, such as unsatisfactory matting effect, easy to tear, and easy to be corroded by bacteria, so as to achieve enhanced toughness and not easy to be torn Cracking, improving the effect of antibacterial and antibacterial properties

Active Publication Date: 2017-12-19
ZHEJIANG CHENGDE PACKAGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the matting effect of the existing matt packaging film is not ideal, and there are also problems that it is easy to tear and easy to be corroded by bacteria.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment one: the preparation of matting composite agent

[0031] The matting composite agent of this embodiment is prepared by emulsion polymerization and sol-gel method using acrylate monomer, organosilicon monomer, sodium dodecylbenzenesulfonate, ethyl orthosilicate and nickel-doped ZnO as main raw materials Among them, nickel-doped ZnO deposits nano-nickel powder on ZnO nano-spheres surrounded by zinc oxide nano-sheets. Specifically, nano-nickel powder is dispersed in deionized water by ultrasonic waves, and then ZnO is added to continue ultrasonic dispersion for 20-30 minutes. Stand still for 20-24 hours, then filter, wash and dry to obtain nickel-doped ZnO with a mass fraction of 3.5%. The ZnO used in this example is prepared by a gas-phase hydrothermal method.

[0032] The preparation method of the matting composite agent used in the matt packaging film preparation raw material of the present invention is specifically as follows:

[0033]Mix acrylate monomer ...

Embodiment 2

[0034] Example 2: Preparation of antibacterial and toughening compound

[0035] The antibacterial and toughening compound of this embodiment uses dopamine to modify the multi-walled carbon nanotubes under acidic conditions, then immerses in a saturated solution of tea polyphenols to deposit tea polyphenols, and then uses glutaraldehyde as a cross-linking agent. After grafting chitosan through covalent bonds, the solid obtained by vacuum drying is added into β-cyclodextrin water solution, stirred, refrigerated for 20 hours, suction filtered, washed and dried. The multi-walled carbon nanotubes are grown on the surface and edges of graphene by chemical vapor deposition.

[0036] The specific preparation method of the antibacterial and toughening compound of the present embodiment is as follows:

[0037] Ultrasonic dispersion of multi-walled carbon nanotubes in a citric acid / sodium citrate buffer solution with a pH of 4.0 to 4.5, adding dopamine 1.5 times the mass of carbon nanot...

Embodiment 3

[0038] Example 3: Preparation of matte packaging film

[0039] A kind of preparation method of matt packaging film of the present embodiment, comprises the following steps:

[0040] S1. Raw materials are weighed, and the corresponding weights of each raw material are weighed according to the following parts by weight:

[0041] 60 parts of polyethylene resin, 20 parts of starch, 0.5 parts of coupling agent, 6 parts of matting compound, 3 parts of antibacterial and toughening compound, 1.2 parts of calcium carbonate, 0.4 part of ethylene-vinyl acetate copolymer, 2,6-di 0.1 parts of hydroxybenzoic acid.

[0042] S2. Starch gelatinization, add the weighed starch and water into a high-speed mixer at a mass ratio of 1:60, stir and heat to 90°C to make the starch gelatinize into a slurry.

[0043] S3. Stir the mixture, continue to add weighed polyethylene resin, matting compound agent, antibacterial and toughening compound, and coupling agent into the high-speed mixer, heat to a te...

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PUM

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Abstract

The invention relates to the technical field of packing films, in particular to a matt packing film and a preparation method thereof. The matt packing film comprises the following raw materials: 60-80 parts of polyethylene resin, 20-30 parts of starch, 0.5-1.2 part of a coupling agent, 6-10 parts of an extinction complexing agent, 3-6 parts of an antibacterial toughening compound, 1.2-1.8 parts of filler, 0.4-0.7 part of ethylene-vinyl acetate copolymer, and 0.1-0.5 part of 2, 6-dihydroxy-benzoic acid, wherein the extinction complexing agent is organic silicone modified polyacrylate composite emulsion in which nano SiO2 is dispersed and nickel ZnO is doped; the antibacterial toughening compound is prepared by depositing tea polyphenol on a modified carbon nanotube, grafting chitosan and then finely modifying beta-cyclodextrin. The preparation method comprises the steps of weighing raw materials, pasting starch, stirring and mixing materials, blowing and molding to obtain the film. The preparation method is simple in processes, and convenient to operate; the prepared matt packing film is outstanding in extinction effect, outstanding in toughness, hard to tear, high in antibacterial and bacteriostatic effects, and hardly attacked by bacteria.

Description

technical field [0001] The invention relates to the technical field of packaging films, in particular to a matte packaging film and a preparation method thereof. Background technique [0002] The packaging film is used to pack on the surface of the product, forming a very light and protective appearance around the product, so as to achieve the purpose of dustproof, oilproof, moistureproof, waterproof and sunscreen, and effectively protect the product. The gloss of the surface of different packaging films is different. It measures the ability of the surface of the packaging film to reflect light, which is called gloss. The higher the gloss of the packaging film, the stronger the ability to reflect light and the higher the brightness. According to the incident light According to the measurement results of gloss at an angle of 60°, the packaging film can be divided into bright packaging film (>60%), matt packaging film (15%-60%) and dull packaging film (<15%). [0003] D...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L3/02C08L23/08C08L5/08C08L33/12C08K13/06C08K9/04C08K7/24C08K5/1545C08K7/18C08K3/36C08K3/08
CPCC08J5/18C08J2323/06C08J2403/02C08K2003/0862C08K2201/011C08L23/06C08L2201/08C08L2203/16C08L2205/02C08L2205/035C08L3/02C08L23/0853C08L5/08C08L5/16C08L33/12C08K13/06C08K9/04C08K7/24C08K5/1545C08K7/18C08K3/36C08K3/08
Inventor 王道宝王道德王道信
Owner ZHEJIANG CHENGDE PACKAGING
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