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Antibacterial food packaging film and processing technology thereof

A food packaging film, antibacterial technology, applied in the field of antibacterial food packaging film and its processing technology, can solve the problems of poor preservation effect, weak antibacterial performance of chitosan, etc. Reduce the effect of agglomeration

Active Publication Date: 2020-07-24
ANHUI SONGTAI PACKAGING MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Patent No. CN201010558450.4 Chinese invention patent discloses a degradable antibacterial food packaging material and its preparation method, adding chitosan to a coupling agent to help The solvent solution is mixed and stirred, the degradable polymer material is added after drying and the solvent is removed for mixing, and then a lubricant and a plasticizer are added to finally make a film material. This antibacterial packaging material uses chitosan as an antibacterial agent, although it has Natural antibacterial effect, but the antibacterial performance of chitosan is not strong, which leads to the disadvantage of poor fresh-keeping effect of the material

Method used

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  • Antibacterial food packaging film and processing technology thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] An antibacterial food packaging film is made of the following raw materials in parts by weight: 60-70 parts of modified polypropylene, 2-3 parts of antibacterial agent, 1.8-2 parts of zinc stearate, and 10100.5-0.7 parts of antioxidant;

[0047] The food packaging film is made by the following steps:

[0048] The first step is to mix 10% by weight of modified polypropylene, antibacterial agent, zinc stearate and antioxidant in a high-speed mixer, then extrude through a twin-screw extruder at 170 ° C, and cut into pellets. Granules made of plastic masterbatch;

[0049] In the second step, the plastic masterbatch and the remaining modified polypropylene are added to the hopper of the extruder at 185° C. through the screw, the die head, the cooling roller, and the winding mechanism to form a film to obtain the packaging film.

Embodiment 2

[0051] An antibacterial food packaging film is made of the following raw materials in parts by weight: 60-70 parts of modified polypropylene, 2-3 parts of antibacterial agent, 1.8-2 parts of zinc stearate, and 70-20.5-0.7 parts of antioxidant;

[0052] The food packaging film is made by the following steps:

[0053] The first step is to mix 10% by weight of modified polypropylene, antibacterial agent, zinc stearate and antioxidant in a high-speed mixer, then extrude through a twin-screw extruder at 170 ° C, and cut into pellets. Granules made of plastic masterbatch;

[0054] In the second step, the plastic masterbatch and the remaining modified polypropylene are added to the hopper of the extruder at 185° C. through the screw, the die head, the cooling roller, and the winding mechanism to form a film to obtain the packaging film.

Embodiment 3

[0056] An antibacterial food packaging film is made of the following raw materials in parts by weight: 60-70 parts of modified polypropylene, 2-3 parts of antibacterial agent, 1.8-2 parts of zinc stearate, and 10100.5-0.7 parts of antioxidant;

[0057] The food packaging film is made by the following steps:

[0058] The first step is to mix 10% by weight of modified polypropylene, antibacterial agent, zinc stearate and antioxidant in a high-speed mixer, then extrude through a twin-screw extruder at 170 ° C, and cut into pellets. Granules made of plastic masterbatch;

[0059] In the second step, the plastic masterbatch and the remaining modified polypropylene are added to the hopper of the extruder at 185° C. through the screw, the die head, the cooling roller, and the winding mechanism to form a film to obtain the packaging film.

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Abstract

The invention discloses an antibacterial food packaging film which is prepared from the following raw materials in parts by weight: 60-70 parts of modified polypropylene, 2-3 parts of an antibacterialagent, 1.8-2 parts of zinc stearate and 0.5-0.7 part of an antioxidant. The processing technology of the food packaging film comprises the following steps: step 1, preparing plastic master batch from10% by weight of modified polypropylene, an antibacterial agent and an auxiliary agent; and step 2, preparing the packaging film from the plastic master batch and the residual modified polypropylene.Polypropylene is modified and the composite antibacterial agent is prepared, an acyl chloride group is introduced into a polypropylene molecular chain, the acyl chloride group and-OH have extremely high reaction activity and can react with-OH which does not completely react with the surface of silicon dioxide in the antibacterial agent, the antibacterial agent is enabled to be uniformly dispersedin a PP matrix, the antibacterial effect is uniformly and stably exerted, and the modified PP and the antibacterial agent have a relatively strong chemical bonding effect so that antibacterial agentmolecules are not easy to fall off, the antibacterial durability is enhanced and the antibacterial food packaging film is suitable for food packaging.

Description

technical field [0001] The invention belongs to the field of food packaging, and in particular relates to an antibacterial food packaging film and a processing technology thereof. Background technique [0002] It is most beneficial to choose antibacterial film packaging in food packaging, which can inhibit the growth of microorganisms, ensure food safety, and extend the shelf life of food. At present, there are many kinds of plastic films for food packaging, mainly including catalytic inorganic antibacterial agent films, natural and polymer antibacterial agent films, composite antibacterial agent films, inorganic antibacterial agent films and organic antibacterial agent films. From the point of view of the method of preparing food antibacterial packaging film, there are two main categories. One is to make antibacterial agents into plastic masterbatches, which are prepared by single-layer extrusion or salivation of antibacterial agents or plastic masterbatches and resins, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L51/06C08L87/00C08K5/098C08J5/18C08G83/00C08F255/02C08F220/02
CPCC08J5/18C08G83/001C08F255/02C08J2351/06C08J2487/00C08K5/098C08F220/02
Inventor 焦国平齐继业方兴旺程国金
Owner ANHUI SONGTAI PACKAGING MATERIALS
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