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Degradable environmentally-friendly material for food packaging

A technology for environmental protection materials and food packaging, applied in the field of materials, can solve the problems of poor toughness and easy mildew of starch-based plastics, and achieve the effect of excellent performance indicators

Inactive Publication Date: 2017-05-31
宁波旅橙汽车科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, starch-based plastics have poor toughness and are prone to mildew under natural conditions.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A degradable and environmentally friendly material for food packaging, the main raw materials in parts by weight are: 20 parts of pectin, 30 parts of polylactide, 8 parts of corn starch, 5 parts of Wujiapi, 2 parts of moss aspergillus, loofah 1 part of rattan, 0.5 part of sodium stearate, 2 parts of D-isoleucine, 4 parts of ethyl acetate, 0.5 part of chlorogenic acid.

[0017] A method for preparing a degradable environment-friendly material for food packaging, the specific steps are:

[0018] First, mix pectin, polylactide, corn starch, sodium stearate, D-isoleucine, ethyl acetate, and chlorogenic acid evenly, at a stirring speed of 300r / min, for 1h, and stir The temperature is 45°C, and then supercritical carbon dioxide extraction is performed on the skin of Wujiapi, Moss aspergillus, and Luffa vine, and the extracted mixture and the stirred mixture are added to a twin-screw extruder for granulation, and obtained for food. The packaging is degradable and environmenta...

Embodiment 2

[0020] A degradable and environmentally friendly material for food packaging, the main raw materials in parts by weight are: 23 parts of pectin, 32 parts of polylactide, 10 parts of corn starch, 6 parts of Wujiapi, 2 parts of moss aspergillus, loofah 1 part of rattan, 0.5 part of sodium stearate, 2 parts of D-isoleucine, 4 parts of ethyl acetate, 0.5 part of chlorogenic acid.

[0021] A method for preparing a degradable environment-friendly material for food packaging, the specific steps are:

[0022] First, mix pectin, polylactide, corn starch, sodium stearate, D-isoleucine, ethyl acetate, and chlorogenic acid evenly, at a stirring speed of 300r / min, for 1h, and stir The temperature is 45°C, and then supercritical carbon dioxide extraction is performed on the skin of Wujiapi, Moss aspergillus, and Luffa vine, and the extracted mixture and the stirred mixture are added to a twin-screw extruder for granulation, and obtained for food. The packaging is degradable and environment...

Embodiment 3

[0024] A degradable and environmentally friendly material for food packaging, the main raw materials in parts by weight are: 25 parts of pectin, 35 parts of polylactide, 12 parts of corn starch, 7 parts of Wujiapi, 3 parts of moss aspergillus, loofah 3 parts of rattan, 0.7 parts of sodium stearate, 4 parts of D-isoleucine, 6 parts of ethyl acetate, and 0.7 parts of chlorogenic acid.

[0025] A method for preparing a degradable environment-friendly material for food packaging, the specific steps are:

[0026] First, mix pectin, polylactide, cornstarch, sodium stearate, D-isoleucine, ethyl acetate, and chlorogenic acid evenly at a stirring speed of 450r / min for 1.5h. The stirring temperature is 47°C, and then supercritical carbon dioxide extraction is carried out on the skin of Wujiapi, Moss aspergillus, and Luffa vine, and the extracted mixture and the stirred mixture are added to a twin-screw extruder for granulation to obtain Degradable and environmentally friendly materials...

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PUM

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Abstract

The invention discloses a degradable environmentally-friendly material for food packaging. The degradable environmental-protection material for the food packaging is prepared from, by weight, 20-30 parts of colloidal bismuth pectin, 30-40 parts of polylactide, 8-15 parts of corn starch, 5-8 parts of cortex acanthopanacis, 2-4 parts of dicranum scoparium, 1-5 parts of towel gourd stem, 0.5-0.8 part of sodium stearate, 2-6 parts of D-isoleucine, 4-8 parts of ethyl acetate, and 0.5-0.9 part of chlorogenic acid. The obtained degradable environmentally-friendly material for the food packaging is adopted a simulated biological decomposition process in the natural aqueous environment according to the GB / T 19276.1-2003 standard, the obtained biological decomposition rate after testing can reach 98% at most, the photodegradation rate of the material reaches 95% at most, and the other performance indexes are excellent.

Description

technical field [0001] The invention relates to the technical field of materials, in particular to a degradable environmental protection material used for food packaging. Background technique [0002] For a long time, the plastic products we use, such as agricultural film materials, are disposable products made of petroleum synthetic resins, such as polyvinyl chloride, polypropylene, polyethylene, etc., and are discarded as garbage after use. Some are discarded everywhere, and some are buried or burned, which greatly wastes resources. These plastic products take about 200 years to be decomposed. Harmful substances produced during its processing directly pollute the air and water sources. These discarded water-retaining films also caused great damage to the soil structure of the land, directly leading to a series of adverse consequences such as land production reduction. [0003] The degradable plastics currently developed and researched are mainly divided into biodegradab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L3/02C08L5/06C08L97/02C08K5/098C08K5/134C08K5/17B65D65/46
CPCB65D65/466C08L67/04C08L2201/06C08L2205/025C08L2205/035C08L2205/16C08L3/02C08L5/06C08L97/02C08K5/098C08K5/1345C08K5/17Y02A40/90Y02P20/54Y02W90/10
Inventor 陶宏
Owner 宁波旅橙汽车科技有限公司
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