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Preparation method of high-performance biodegradable food packaging film

A food packaging film and biodegradation technology, which is applied in the field of preparation of high-performance biodegradable food packaging films, can solve the problems of poor thermal stability and poor mechanical properties of packaging films, and achieve low cost, good biodegradability, The effect of mild process conditions

Inactive Publication Date: 2016-12-07
陈永林
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the packaging films currently studied have the disadvantages of poor thermal stability and poor mechanical properties.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A method for preparing a high-performance biodegradable food packaging film, comprising the following steps:

[0024] (1) dissolving collagen in deionized water, then adding chromium sulfate, keeping the solution temperature at 2°C, stirring and mixing for 20 hours to obtain a modified collagen solution;

[0025] (2) Heat the modified collagen solution to 60-70°C, add sodium alginate, carboxymethyl cellulose, cyclodextrin and glycerin in sequence, and then stir and keep it warm for 30 minutes to obtain a pasty mixture;

[0026] (3) Using a microwave with a power of 140-600W, first raise the temperature to 30°C, keep it for 10 minutes, then continue to raise the temperature to 45°C, keep it for 10 minutes, continue to raise the temperature to 60°C, and keep it for 10 minutes;

[0027] (4) Place the microwave-treated pasty mixture in a defoamer to remove air bubbles, then pour it into a mold for molding, dry it at a temperature of 80°C for 10 hours, and peel off the film ...

Embodiment 2

[0029] A method for preparing a high-performance biodegradable food packaging film, comprising the following steps:

[0030] (1) dissolving collagen in deionized water, then adding aluminum sulfate, keeping the solution temperature at 10°C, stirring and mixing for 30 hours to obtain a modified collagen solution;

[0031] (2) Heat the modified collagen solution to 60-70°C, add sodium alginate, carboxymethyl cellulose, maltodextrin, and glycerin in sequence, and then stir and keep it warm for 60 minutes to obtain a pasty mixture;

[0032] (3) Using a microwave with a power of 140-600W, first raise the temperature to 30°C and keep it for 30 minutes, then continue to raise the temperature to 45°C, keep it for 30 minutes, continue to raise the temperature to 60°C, and keep it for 30 minutes;

[0033] (4) Place the microwave-treated pasty mixture in a defoamer to remove air bubbles, then pour it into a mold for molding, dry it at a temperature of 120°C for 20 hours, and peel off the...

Embodiment 3

[0035] A method for preparing a high-performance biodegradable food packaging film, comprising the following steps:

[0036] (1) Dissolving collagen in deionized water, then adding titanium sulfate, keeping the solution temperature at 4°C, stirring and mixing for 22 hours to obtain a modified collagen solution;

[0037] (2) Heat the modified collagen solution to 60-70°C, add sodium alginate, carboxymethyl cellulose, amylose, and glycerin in sequence, then stir and keep warm for 40 minutes to obtain a pasty mixture;

[0038] (3) Using a microwave with a power of 140-600W, first raise the temperature to 40°C, keep it warm for 15 minutes, then continue to raise the temperature to 60°C, and keep it warm for 15 minutes;

[0039] (4) Place the microwave-treated pasty mixture in a defoamer to remove air bubbles, then pour it into a mold for molding, dry it at a temperature of 90°C for 12 hours, and peel off the film to obtain a high-performance biodegradable food packaging film. The...

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PUM

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Abstract

The invention discloses a preparation method of a high-performance biodegradable food packaging film. The method comprises the following steps that a cross-linking agent is adopted for modifying collagen, the modified collagen, sodium alginate, carboxymethylcellulose, modified starch and glycerin are mixed under a certain condition, and a pasty mixed solution is obtained; the pasty mixed solution is subjected to microwave treatment and irradiation, and then bubbles are removed; the pasty mixed solution is subjected to molding and drying in a mold, and the high-performance biodegradable food packaging film is obtained. The prepared food packaging film is good in biodegradability, excellent in thermal stability, good in mechanical property and low in preparation cost.

Description

Technical field: [0001] The invention relates to the field of preparation of a food packaging film, in particular to a preparation method of a high-performance biodegradable food packaging film. Background technique: [0002] The development of the packaging industry has contributed to economic construction, but on the one hand, product packaging consumes a lot of resources, on the other hand, packaging residues are a source of pollution that cannot be ignored, which has brought serious environmental problems. Most people think that packaging has The coming environmental pollution ranks fourth after water pollution, ocean and lake pollution, and air pollution. It is estimated that the amount of waste discarded every year in the world is close to 10 billion tons, and packaging waste accounts for about 1 / 3 and 1 / 2 in terms of volume. These wastes not only consume resources, but also take up a huge amount of At the same time, many packaging materials are non-degradable materia...

Claims

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Application Information

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IPC IPC(8): C08L89/00C08L5/04C08L1/28C08L3/02C08L3/12C08L3/04C08L3/06C08K3/30C08K5/053C08J5/18C08J3/28C08J3/24B65D65/46
CPCB65D65/466C08J3/246C08J3/28C08J5/18C08J2305/04C08J2389/00C08J2405/04C08J2489/00C08L5/04C08L89/00C08L2201/06C08L2201/08C08L2203/16C08L2205/035C08L1/286C08L3/02C08K2003/3045C08K5/053C08K2003/3081C08L3/12C08L3/04C08L3/06Y02A40/90Y02W90/10
Inventor 陈永林
Owner 陈永林
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