Easy-to-uncover film material capable of resisting high-temperature cooking and preparation method thereof

A film material and high-temperature-resistant technology, applied in chemical instruments and methods, synthetic resin layered products, layered products, etc., can solve the problem of poor sealing performance and barrier performance of packaging bags, poor high and low temperature resistance of PE film, and content Leakage and overflow problems, to achieve good transparency, low heat-sealing initiation temperature, and improve sealing performance

Pending Publication Date: 2021-09-24
惠州德昉高分子膜材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing PE film has poor high and low temperature resistance, high temperature cooking is easy to become soft and deformed, low temperature freezing and brittle, low heat sealing strength, poor impact resistance, poor sealing performance and barrier performance of the packaging bag made, and the packaging is easy to break, resulting in The content leaks and deteriorates, and it is not easy to peel off. When the package is opened, it is easy to cause the content to leak and overflow

Method used

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  • Easy-to-uncover film material capable of resisting high-temperature cooking and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] An easy-to-remove film material that can withstand high-temperature cooking is co-extruded from a corona layer, an intermediate layer, and a heat-sealing layer; the mass ratio of the corona layer, intermediate layer, and heat-sealing layer is 7:10:3 ;

[0020] The corona layer material is a mixture of metallocene medium density polyethylene 50wt% and high density polyethylene 50wt%;

[0021] The material of the middle layer is metallocene high-density polyethylene;

[0022] The heat-sealing layer material is formed by copolymerization of high-density polyethylene (HDPE), polypropylene (PP) and polybutene (PB1);

[0023] Wherein, the density of the metallocene medium density polyethylene is 0.934g / cm 3 , the melt index is 0.9g / 10min; the density of the high-density polyethylene is 0.961g / cm 3 , the melt index is 0.85g / 10min; the melt index of the metallocene high-density polyethylene is 0.7g / 10min.

Embodiment 2

[0025] An easy-to-remove film material that can withstand high-temperature cooking is co-extruded from a corona layer, an intermediate layer, and a heat-sealing layer; the mass ratio of the corona layer, intermediate layer, and heat-sealing layer is 7:10:3 ;

[0026] The corona layer material is a mixture of metallocene medium density polyethylene 40wt% and high density polyethylene 60wt%;

[0027] The material of the middle layer is metallocene high-density polyethylene;

[0028] The heat-sealing layer material is formed by copolymerization of high-density polyethylene (HDPE), polypropylene (PP) and polybutene (PB1);

[0029] Wherein, the density of the metallocene medium density polyethylene is 0.934g / cm 3 , the melt index is 0.9g / 10min; the density of the high-density polyethylene is 0.961g / cm 3 , the melt index is 0.85g / 10min; the melt index of the metallocene high-density polyethylene is 0.7g / 10min.

Embodiment 3

[0031] An easy-to-remove film material that can withstand high-temperature cooking is co-extruded from a corona layer, an intermediate layer, and a heat-sealing layer; the mass ratio of the corona layer, intermediate layer, and heat-sealing layer is 7:10:3 ;

[0032] The corona layer material is metallocene polypropylene;

[0033] The material of the middle layer is metallocene high-density polyethylene;

[0034] The heat-sealing layer material is formed by copolymerization of high-density polyethylene (HDPE), polypropylene (PP) and polybutene (PB1);

[0035] Wherein, the density of the high-density polyethylene is 0.961g / cm 3 , the melt index is 0.85g / 10min; the melt index of the metallocene high-density polyethylene is 0.7g / 10min.

[0036] The preparation method of the easy-to-remove film material in the above embodiment is to add the corona layer, intermediate layer and heat-sealing layer materials into the extruder to heat and melt them, and the melted materials of each...

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Abstract

The invention belongs to the technical field of high polymer materials, ;and discloses an easy-to-uncover film material capable of resisting high-temperature cooking. The easy-to-uncover film material is formed by co-extruding a corona layer, a middle layer and a heat sealing layer the corona layer is made of metallocene polypropylene or a mixture of 40-60 wt% of metallocene medium-density polyethylene and 40-60 wt% of high-density polyethylene; the middle layer is made of metallocene high-density polyethylene; and the heat sealing layer is formed by copolymerizing high-density polyethylene (HDPE), polypropylene (PP) and polybutylene (PB1). The easy-to-uncover film material can resist 121 DEG C / 30 min high-temperature cooking, has high tensile strength and elongation at break before and after cooking, can be heat-sealed in a wide temperature range of 150-230 DEG C, and has high heat sealing strength and good stability. The easy-to-uncover film material has good easy-to-uncover performance. A packaging bag made of the film material is good in sealing performance, can guarantee that the product does not leak liquid in the transportation and storage process, and can effectively avoid the content loss during unsealing.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a high-temperature cooking-resistant easy-to-remove film material and a preparation method thereof. Background technique [0002] In order to improve the circulation cycle and shelf life of products, packaging materials used for food and cosmetics need to have high sealing performance in addition to good mechanical properties, such as tensile strength, tear resistance, impact resistance, etc. , barrier performance and chemical stability, such as high-temperature disinfection and low-temperature storage for food and cosmetics, etc., and the packaging needs to be easy to peel off to avoid loss of content when the package is opened. The existing PE film has poor high and low temperature resistance, high temperature cooking is easy to become soft and deformed, low temperature freezing and brittle, low heat sealing strength, poor impact resistance, poor sealing p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/32B32B37/10B32B27/08B32B37/06
CPCB32B27/32B32B37/10B32B27/08B32B37/06B32B2307/306
Inventor 徐国柱何伟
Owner 惠州德昉高分子膜材料有限公司
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