Freshness-retaining and heat-proof food packaging or containing material and preparation method thereof

A technology of machine materials and mixtures, which is applied in packaging, household packaging, and packaged food. It can solve the problems of high and low temperature resistance, heat preservation, freshness preservation, and environmental protection at the same time, and achieve excellent microwave resistance.

Inactive Publication Date: 2016-01-27
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the commonly used food packaging and containers cannot meet the multiple needs of high temperature resistance, low temperature resistance, heat preservation, freshness preservation, and environmental protection at the same time.

Method used

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  • Freshness-retaining and heat-proof food packaging or containing material and preparation method thereof
  • Freshness-retaining and heat-proof food packaging or containing material and preparation method thereof
  • Freshness-retaining and heat-proof food packaging or containing material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A food lunch box material for fresh-keeping and heat insulation, the proportion of each component is as follows: A-homopolymer polypropylene (homopolymer PP) 5-10 parts; high melt strength polypropylene 80-90 parts ( Sinopec Yanshan Petrochemical Company), C-homopolymer PP or calcium carbonate polypropylene 5-10 parts, D-homopolymer PP 5-10 parts, E-sodium bicarbonate 2-5 parts; A and D were added with 5wt‰- 5 wt% F-color masterbatch. Its preparation method is as follows:

[0023] (1) Add color masterbatch to A and D respectively, mix well, and put them into A extruder and D extruder hopper respectively; add E-sodium bicarbonate to high melt strength polypropylene to foam, then add B to extrude In the hopper of the extruder; C is added into the hopper of the C extruder; the extrusion processing temperature is controlled at 160-280 ° C;

[0024] (2) B high melt strength polypropylene foam is mixed, plasticized and extruded by B extruder, and C material is mixed, plasti...

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Abstract

The invention provides a material suitable for packaging and containing foods. The material is characterized by comprising an overlapped complex which is formed by overlapping two-layer complexes of B and C by 16-3000 layers, wherein B is a high-melt-strength polypropylene (HMSPP) formed object, and C is homo-polypropylene or calcium carbonate. The material is recoverable, decomposable, toxic-free and bakeable and capable of preserving temperature, and multipurpose characteristics of environmental friendliness and the like are truly realized.

Description

technical field [0001] The invention relates to a PP material, in particular to the packaging and storage of food. Background technique [0002] Packaging materials and container materials refer to materials or utensils used to wrap or contain supplies, which are widely used in daily life and industrial production. With the improvement of people's living standards and the substantial increase in purchasing power, the demand for packaging materials is also increasing. If they are not handled properly, it will bring a great burden to the environment. [0003] For the food that is indispensable in human life, the packaging and storage of food, the direct or indirect contact between the material and the food, is directly related to people's health, and safety is particularly important. For the packaging and storage of different foods, there are different requirements for high and low temperature resistance, heat insulation, preservation and other properties. At present, the co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/08B32B27/32B32B5/18B32B37/10B32B27/20B32B37/06C08L23/12C08K3/26C08J9/08
CPCB32B27/08B32B5/18B32B27/20B32B27/32B32B37/06B32B37/10B32B2250/42B32B2307/304B32B2307/306B32B2309/02B32B2439/70C08J9/08C08J2203/02C08J2323/12C08L23/12C08L2203/14
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