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Preparation and application of high-strength and high-toughness food packaging film based on PE film base material

A food packaging film and film substrate technology, applied in the field of plastic flexible packaging, can solve problems such as non-degradability or long degradation cycle, sustainable development threat, and environmental secondary pollution, so as to promote sustainable development, economic benefits and social Obvious benefit and resource saving effect

Pending Publication Date: 2021-11-30
HUNAN JINGXIN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the non-degradability or long degradation cycle of plastic flexible packaging materials, it is not easy to landfill, and the burning treatment will cause secondary pollution to the environment and pose a threat to the sustainable development of human beings.

Method used

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  • Preparation and application of high-strength and high-toughness food packaging film based on PE film base material
  • Preparation and application of high-strength and high-toughness food packaging film based on PE film base material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) Based on the PE film structure, including the outer layer, the middle layer and the inner layer arranged in sequence, in mass percentage, they are prepared from the raw materials of the following components, as shown in the table:

[0019]

[0020] (2) A PE film adopting the formula described in Embodiment 1, the steps are as follows: input the outer layer (A), middle layer ( B), the corresponding data of the inner layer (C), respectively set extruder A, extruder B, extruder C, die head temperature setting and 170 ~ 175 degrees, after the set temperature is reached, it will be pneumatically blown into the extruder screw. After the mixture is hot-melt extruded through the die, blown, air-cooled, corona treated and rolled, the superimposed outer layer, middle layer and inner layer mold are obtained. The performance testing indicators of the PE film after the outer layer, the middle layer and the inner layer mold are superimposed are shown in the table:

[0021] ...

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PUM

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Abstract

The invention discloses a high-strength and high-toughness food packaging film based on a PE film base material, and belongs to the technical field of plastic flexible packaging. The high-strength and high-toughness food packaging film comprises the PE film base material and other plastic base materials, and the structure based on the PE film comprises an outer layer, a middle layer and an inner layer which are sequentially stacked. The outer layer comprises linear low-density polyethylene, a fluoropolymer and metallocene linear low-density polyethylene; the middle layer comprises low-density polyethylene, linear low-density polyethylene, a fluoropolymer and metallocene linear low-density polyethylene; and the inner layer comprises low-density polyethylene, linear low-density polyethylene, a fluoropolymer, metallocene linear low-density polyethylene and an opening slipping agent. According to the high-strength and high-toughness food packaging film prepared on the basis of the PE film base material, the third-generation metallocene LLDPE is added into a PE film formula, the tensile property and the flexibility are greatly improved, and the corresponding food packaging film is relatively thin, saves resources, reduces the cost and is obvious in economic benefit and social benefit.

Description

technical field [0001] The invention belongs to the technical field of plastic flexible packaging, and in particular relates to the preparation and application of a high-strength and high-toughness food packaging film based on a PE film base material. Background technique [0002] PE film is a commonly used plastic flexible packaging material, widely used in food, medicine, electronic products, daily chemical products and other packaging. However, due to the non-degradability or long degradation cycle of plastic flexible packaging materials, it is not easy to landfill, and the burning treatment will cause secondary pollution to the environment and pose a threat to the sustainable development of human beings. Therefore, the research and development of high-strength and high-toughness food packaging films based on PE film substrates can achieve the most economical materials, the least waste, and save resources and energy. This is also an important direction to reduce plastic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/06B32B27/32C08L23/08C08L23/06C08L27/12B65D65/40
CPCB32B27/06B32B27/32C08L23/0815B65D65/40B32B2439/70C08L2205/03C08L2205/025C08L2205/035C08L2207/066C08L27/12C08L23/06
Inventor 胡立新李驰张雪成张政华何开平
Owner HUNAN JINGXIN TECH