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Food grade starch master batch composition, food grade starch master batch and preparation method of master batch

A food-grade, composite technology, applied in the chemical field, can solve the problems of restricting the application of starch-based plastics and the toxicity of compatibilizers, and achieve the effects of increasing the amount and ratio of addition, excellent plastic performance, and cost savings

Inactive Publication Date: 2020-02-18
BEIJING YISIDE LOGISTICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the main direction of current research is starch, which is cheaper than polyethylene. Blending starch with polyethylene, granulating and blowing film, but most of the compatibilizers used are toxic and cannot be in direct contact with food. This largely limits the application of starch-based plastics in food packaging

Method used

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  • Food grade starch master batch composition, food grade starch master batch and preparation method of master batch
  • Food grade starch master batch composition, food grade starch master batch and preparation method of master batch

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preparation example Construction

[0038] In the second aspect, the present invention provides a preparation method of food-grade starch masterbatch, the method comprising:

[0039] The food-grade starch masterbatch composition of the present invention is prepared by granulation. In the specific embodiment of the present invention, prepare according to the following steps:

[0040] (1) Preparation of raw materials

[0041] The plasticized starch obtained in the above-mentioned manner, the matrix, the lubricant and the auxiliary agent are added to the high-speed mixer successively, and the rotating speed is adjusted to 300 rpm and stirred for 5 minutes before discharging, and discharging for subsequent use;

[0042] (2) Preparation of masterbatch

[0043] The uniformly mixed material in step (1) is added to the hopper in the twin-screw extruder, and the food-grade starch masterbatch can be obtained by extruding and granulating. Use a parallel twin-screw pelletizing unit to extrude and pelletize, and set the t...

preparation example 1

[0051] 80 parts by weight of corn starch and 20 parts by weight of glycerin.

preparation example 2

[0053] 80 parts by weight of potato starch, 18 parts by weight of glycerin, and 2 parts by weight of glycerol monostearate.

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Abstract

The invention relates to the technical field of chemistry, relates to a food-grade starch master batch and a preparation method thereof, and discloses a food-grade starch master batch composition anda method for preparing a starch master batch. Based on the total weight of the starch master batch composition, the starch master batch composition contains: thermoplastic starch 35-70 wt%, a matrix 8-35 wt%, a compatibilizer 2-15 wt%, a lubricant 1-5 wt%, and an auxiliary agent 0.1-1wt%. According to the food-grade starch master batch composition and the preparation method of the master batch, starch-based plastics can be used in food packaging materials, and it is ensured that the plastic properties of manufactured products are qualified, and further the environmental protection performanceof the products is improved.

Description

technical field [0001] The invention belongs to the technical field of chemistry, and in particular relates to a food-grade starch masterbatch composition, a food-grade starch masterbatch and a preparation method thereof. Background technique [0002] Plastic packaging bags made of polyethylene and other materials are light in weight, relatively low in cost, easy to use, and have good waterproof and oil-proof performance. Things have also increased in large quantities. Only 9% of plastics in the world are recycled, which can cause serious problems, because most plastics cannot be biodegraded, and it usually takes more than 400 years to fully degrade. The incomplete degradation of plastics makes ocean, land, and air pollution more and more more serious. The natural ecological environment is facing great challenges. [0003] With the introduction of my country's policy of building ecological civilization, the country has paid more and more attention to environmental protect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L3/02C08L23/08C08L23/06C08K5/053C08K5/103C08K5/098C08K5/00C08J3/22C08J5/18
CPCC08J3/226C08J5/18C08J2323/06C08J2403/02C08J2423/08C08K5/00C08K5/053C08K5/098C08K5/103
Inventor 常江
Owner BEIJING YISIDE LOGISTICS TECH
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