Degradable environment-friendly antibacterial preservative film and preparation method thereof

A fresh-keeping film and environmental protection technology, applied in the field of degradable environmental protection antibacterial fresh-keeping film and its preparation, can solve the problems of not meeting the requirements of safety, health and ecological environmental protection, lack of degradability, poor mechanical properties, etc., and achieve excellent biodegradability, A wide range of sources and the effect of improved mechanical properties

Pending Publication Date: 2021-02-26
安徽嘉美包装有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the existing technology, most of the plastic wraps are made of polypropylene, polyethylene, polyvinyl chloride and other materials. These packaging materials have problems such as poor safety, poor mechanical properties, single function, etc., and lack of degradation ability, which is easy to cause environmental pollution after being discarded. , can no longer meet people's requirements for safety, health and ecological environmental protection

Method used

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  • Degradable environment-friendly antibacterial preservative film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A degradable environment-friendly antibacterial fresh-keeping film, comprising the following raw materials by weight: 30 parts of polyvinyl alcohol, 5 parts of sweet potato starch, 5 parts of modified protein liquid, 1 part of compound essential oil emulsion, 8 parts of modified montmorillonite, and 1 part of glycerin part and 1 part of dispersant;

[0037] The degradable environmental protection antibacterial fresh-keeping film is made by the following steps:

[0038] The first step is to add polyvinyl alcohol and sweet potato starch into deionized water respectively to prepare a polyvinyl alcohol solution with a mass fraction of 5% and a sweet potato starch solution with a mass fraction of 5%. Heating, reacting for 15min under the condition of rotating speed 200r / min, then mixing in equal volume to obtain the first mixed solution;

[0039] The second step, add dispersant and modified montmorillonite to the first mixed solution, react for 5 minutes at a temperature of...

Embodiment 2

[0054] A degradable environment-friendly antibacterial fresh-keeping film, comprising the following raw materials by weight: 35 parts of polyvinyl alcohol, 6 parts of sweet potato starch, 8 parts of modified protein liquid, 2 parts of compound essential oil emulsion, 9 parts of modified montmorillonite, 2 parts of glycerin part and 1 part of dispersant;

[0055] The degradable environmental protection antibacterial fresh-keeping film is made by the following steps:

[0056] The first step is to add polyvinyl alcohol and sweet potato starch into deionized water respectively to prepare a polyvinyl alcohol solution with a mass fraction of 5% and a sweet potato starch solution with a mass fraction of 5%. Heating, reacting for 15min under the condition of rotating speed 250r / min, then mixing in equal volume to obtain the first mixed solution;

[0057] In the second step, add dispersant and modified montmorillonite to the first mixed solution, react for 8 minutes at a temperature o...

Embodiment 3

[0072] A degradable environment-friendly antibacterial fresh-keeping film, comprising the following raw materials by weight: 40 parts of polyvinyl alcohol, 10 parts of sweet potato starch, 10 parts of modified protein solution, 3 parts of compound essential oil emulsion, 10 parts of modified montmorillonite, and 3 parts of glycerin part and 1 part of dispersant;

[0073] The degradable environmental protection antibacterial fresh-keeping film is made by the following steps:

[0074]The first step is to add polyvinyl alcohol and sweet potato starch into deionized water respectively to prepare a polyvinyl alcohol solution with a mass fraction of 5% and a sweet potato starch solution with a mass fraction of 5%. Heating, reacting for 15min under the condition of rotating speed 300r / min, then mixing in equal volume to obtain the first mixed solution;

[0075] In the second step, add dispersant and modified montmorillonite to the first mixed solution, react for 10 minutes at a temp...

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Abstract

The invention discloses a degradable environment-friendly antibacterial preservative film, which is prepared from the following raw materials in parts by weight: 30-40 parts of polyvinyl alcohol, 5-10parts of sweet potato starch, 5-10 parts of modified protein liquid, 1-3 parts of compound essential oil emulsion, 8-10 parts of modified montmorillonite, 1-3 parts of glycerin and 1 part of a dispersing agent. The invention also discloses a preparation method of the degradable environment-friendly antibacterial preservative film. The preparation method comprises the following steps: mixing the raw materials, degassing, pouring into a template, drying at 40 DEG C for 24-48 hours, tearing the film, storing at 50-60% humidity and 20-30 DEG C for 12-48 hours, and softening. The used raw materials are non-toxic, harmless, pollution-free and biodegradable. The preservative film has the characteristics of lasting antibacterial property, excellent barrier property and good mechanical property, well solves the problem of white garbage pollution at present, and has a great application value in the field of fresh food and fruit and vegetable fresh keeping.

Description

technical field [0001] The invention belongs to the technical field of fresh-keeping film preparation, and in particular relates to a degradable environmental-friendly antibacterial fresh-keeping film and a preparation method thereof. Background technique [0002] With the development of society, the issue of food safety has attracted more and more attention. Broad-spectrum, high-efficiency and safe fresh-keeping film means to replace traditional chemical preservatives for commercialization of fruits and vegetables after picking will be a major development trend in the field of fresh-keeping storage. At present, the commonly used food preservative films are mostly made of the following materials: polypropylene, polyethylene, and polyvinyl chloride. These packaging materials have problems such as poor safety, single function, and lack of degradation ability. It cannot meet people's requirements for safety, health and ecological environmental protection. With the increasing at...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L29/04C08L3/02C08L89/00C08L5/08C08L91/00C08K3/34C08K5/053C08K9/04C08K3/22C08K9/12C08J5/18
CPCC08J5/18C08J2329/04C08J2403/02C08J2489/00C08J2405/08C08J2491/00C08K3/346C08K5/053C08K9/04C08K2003/2248C08K9/12
Inventor 汪连生
Owner 安徽嘉美包装有限公司
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