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Preparation method of efficient and antibacterial composite film with water-meeting sensitivity

Active Publication Date: 2015-03-25
HUAQIAO UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, in many cases, in order to maintain a high antibacterial effect, it is often necessary to add a large amount of antibacterial materials, which increases the difficulty of controlling the cost and side effects of the product

Method used

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  • Preparation method of efficient and antibacterial composite film with water-meeting sensitivity
  • Preparation method of efficient and antibacterial composite film with water-meeting sensitivity
  • Preparation method of efficient and antibacterial composite film with water-meeting sensitivity

Examples

Experimental program
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Effect test

Embodiment 1

[0037] The preparation of embodiment 1 natural essential oils polyethylene antibacterial film:

[0038] Realize the immobilization of natural essential oils in polyethylene films, rely on the volatilization of natural essential oils, and effectively improve the antibacterial efficiency of antibacterial films through the atmosphere-type antibacterial effect; due to the use of natural essential oils as antibacterial agents, their own safety and stability More reliable, and then realized the non-toxic characteristics of the antibacterial film.

[0039] The specific implementation steps are as follows:

[0040] (1) Preparation of high-concentration natural essential oil masterbatch with natural essential oil and low melting point polymer:

[0041] In this example, mustard oil is used as a typical natural essential oil for description:

[0042] Mix the antioxidant into 20 kg of mustard oil and stir evenly; add 70 kg of ethylene-vinyl acetate copolymer and 10 kg of ethylene-propyl...

Embodiment 2

[0059] The preparation of embodiment 2 natural essential oil / solid chlorine dioxide class polyethylene antibacterial film

[0060] (1) Preparation of high-concentration natural essential oil masterbatch with natural essential oil and low melting point polymer:

[0061] In this example, mustard oil is used as a typical natural essential oil for description:

[0062] Mix the antioxidant into 20 kg of mustard oil and stir evenly; add 70 kg of ethylene-vinyl acetate copolymer and 10 kg of ethylene-propylene copolymer into the kneader, and then add the mustard oil into the kneader batch by batch. Knead well until the mustard oil is absorbed into the polymer resin matrix.

[0063] (2) Preparation of natural essential oil masterbatch: Add the above-prepared resin directly into a single-screw extruder, extrude and granulate below 120°C, and use air cooling as the main cooling method to prepare natural essential oil with a concentration of 20%. Essential oil masterbatch (granule 0). ...

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Abstract

The invention provides a preparation method of an efficient and antibacterial composite film with water-meeting sensitivity. Natural essential oil is used as an antibacterial agent, and the safety and free toxin of the antibacterial composite film are effectively kept; an atmosphere type antibacterial effect is introduced so that the antibacterial efficiency is effectively improved; and slow release type solid chlorine dioxide is used as the antibacterial agent in order to further improve the antibacterial efficiency, so that the antibacterial efficiency and the antibacterial period are effectively improved. The antibacterial film is prepared by adopting a multilayered co-extrusion method so that various function properties of the antibacterial film are sufficiently realized; antibacterial atmosphere is prevented from escaping to the outside and the antibacterial period is prolonged; meanwhile, a water-soluble slow release type material is adopted so that the responsiveness to water by the antibacterial efficiency of chlorine dioxide is realized; the concentration of the antibacterial agent is effectively regulated and controlled; and the antibacterial effect in a high-humidity temperature is guaranteed. The antibacterial efficiencies of the antibacterial film are kept as follows according to different types of the antibacterial agents: the antibacterial efficiency to colon bacillus is 73%-100% and the antibacterial efficiency to staphylococcus aureus is 86%-100%.

Description

technical field [0001] This application relates to a high-efficiency, water-responsive antimicrobial film. Background technique [0002] Microorganisms are everywhere, and they multiply quickly. They exist in the air, water, soil, and everything we touch every day. When bacteria contaminate our food, they can easily cause various diseases and even threaten our lives. . For cooked food and fruits and vegetables packaged with ordinary plastic wrap that does not have antibacterial function, due to its rich nutrition and poor air circulation, due to the existence of respiration, it provides a warm environment for bacteria, yeast and actinomycetes. The humid environment leads to the easy production of microorganisms and accelerates the spoilage process of food, which brings huge economic losses to human beings and threatens human health at the same time. [0003] The problem of food storage, especially fruits and vegetables, has become a global problem, which brings huge econom...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B37/00B32B27/06B32B27/18B32B27/32C08L23/06C08L23/08C08L23/16C08K13/06C08K9/08C08K3/26C08K3/24C08K5/09C08K5/00C08J3/22
CPCB32B27/06B32B27/18B32B27/32B32B2307/7145B32B2439/70C08J3/226C08J2323/06C08J2423/08C08L23/06C08L2203/16C08L2205/03C08L91/00C08L23/0853C08K2003/265C08K9/04C08K3/24
Inventor 钱浩林志勇张莹雪
Owner HUAQIAO UNIVERSITY
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