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Dual-degradation heatproof food package film

A food packaging film, double-degradation technology, applied in packaging, household packaging, packaged food, etc., can solve problems such as environmental pollution, difficult natural degradation, and hindering economic development

Inactive Publication Date: 2016-12-14
南通立方新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the materials widely used in food packaging at present mainly include low-density polyethylene, high-density polyethylene, polypropylene, ethylene-propylene copolymer, etc. After these materials are discarded, because the main component of the linear copolymer is difficult to Natural degradation has brought harm to the ecology, and the resulting environmental pollution has become more and more obvious, and has become an important factor hindering economic development

Method used

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  • Dual-degradation heatproof food package film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Such as figure 1 As shown, a double-degradable heat-resistant food packaging film has a layered structure, which is a transparent heat-resistant protective layer (1), a printing layer (2), a printing substrate layer (3), and a photodegradable barrier layer from the outside to the inside. layer (4) and a biodegradable heat-sealing layer (5), wherein the transparent protective layer (1) is an ethylene-vinyl acetate copolymer added with a benzophenone photosensitizer and a particle size of 20 nm fumed silica, with a thickness of 10 microns, the printing substrate layer (3) is a biaxially oriented polyamide added with benzophenone photosensitizer, the thickness is 20 microns, the photodegradable barrier layer (4) is a polymer of methyl ketone and ethylene, the thickness The biodegradable heat-sealing layer (5) is polylactic acid with a thickness of 20 microns, and the adjacent layers of the double-degradable food packaging film are bonded by heat and pressure.

Embodiment 2

[0026] A double-degradable heat-resistant food packaging film, which is a layered structure, from the outside to the inside is a transparent heat-resistant protective layer (1), a printing layer (2), a printing substrate layer (3), and a photodegradable barrier layer (4 ) and a biodegradable heat-sealing layer (5), wherein the transparent protective layer (1) is an ethylene-vinyl acetate copolymer added with a benzophenone photosensitizer and a particle size of 30 nm fumed silica, with a thickness of 20 microns, The printing substrate layer (3) is biaxially stretched polypropylene with a ferrocene photosensitizer added, with a thickness of 40 microns, and the photodegradable barrier layer (4) is a polymer of methacrylketone and ethylene, with a thickness of 40 microns. The biodegradable heat-sealing layer (5) is polycaprolactone with a thickness of 40 microns, and the adjacent layers of the double-degradable food packaging film are bonded by heat and pressure.

Embodiment 3

[0028] A double-degradable heat-resistant food packaging film, which is a layered structure, from the outside to the inside is a transparent heat-resistant protective layer (1), a printing layer (2), a printing substrate layer (3), and a photodegradable barrier layer (4 ) and a biodegradable heat-sealing layer (5), wherein the transparent protective layer (1) is an ethylene-vinyl acetate copolymer added with a benzophenone photosensitizer and a particle size of 50 nanometers of fumed silica, with a thickness of 30 microns, The printing substrate layer (3) is polyethylene terephthalate added with iron stearate photosensitizer, the thickness is 50 microns, and the photodegradable barrier layer (4) is the polymerization of vinyl alcohol cinnamate and ethylene The biodegradable heat-sealing layer (5) is polyester amide with a thickness of 50 microns, and the adjacent layers of the double-degradable food packaging film are bonded by heat and pressure.

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Abstract

The invention relates to a dual-degradation heatproof food package film. The dual-degradation heatproof food package film is in a layered structure and sequentially comprises the following layers from outer to inner: a transparent heatproof protective layer (1), a printed layer (2), a printed base material layer (3), a visible light degradation baffling layer (4), and a biodegradable heat sealed layer (5). The transparent heatproof protective layer (1) comprises fumed silica. The transparent heatproof protective layer (1) and the printed base material layer (3) comprise a photosensitizer. The visible light degradation baffling layer (4) is prepared through copolymerization between monomers with photosensitive groups and olefin monomers. The biodegradable heat sealed layer (5) is prepared from aliphatic polyester with an ester group structure. The neighbored layers of the dual-degradation heatproof food package film are adhered together through hot pressing. The added fumed silica can enable the package film to have a good heatproof property. Moreover, the discarded package film can be degraded by light and organisms, the package film is green and environment-friendly, and the application range is wide.

Description

technical field [0001] The invention relates to the application field of food packaging materials, in particular to a double-degradation heat-resistant food packaging film. Background technique [0002] As a country with a large population, my country has a huge total food consumption. With the rapid development of the food processing industry, the importance of food packaging materials is self-evident. Plastic has become one of the fastest-growing modern food packaging materials, and plastic food packaging films have brought great convenience to people's lifestyles. However, the materials widely used in food packaging at present mainly include low-density polyethylene, high-density polyethylene, polypropylene, ethylene-propylene copolymer, etc. After these materials are discarded, because the main component of the linear copolymer is difficult to Natural degradation has brought harm to the ecology, and the resulting environmental pollution has become more and more obvious...

Claims

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Application Information

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IPC IPC(8): B32B27/18B32B27/28B32B27/30B32B27/34B32B27/36B32B37/06B32B37/10
CPCB32B27/30B32B27/18B32B27/28B32B27/34B32B27/36B32B37/06B32B37/10B32B2307/306B32B2307/4026B32B2307/7163B32B2439/70
Inventor 马福文丁一沈锋
Owner 南通立方新材料科技有限公司
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