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Biodegradable composite film material, preparation method thereof and packaging bag thereof

A composite film and biodegradable technology, which is applied in the field of biodegradable composite film materials and its preparation method and packaging bags, and can solve the problems of non-degradable plastics polluting the environment, etc.

Inactive Publication Date: 2020-12-18
珠海市辉丰包装材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a biodegradable composite film material and its preparation method and packaging bag that solve the problem of non-degradable plastics polluting the environment while satisfying functional packaging applications

Method used

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  • Biodegradable composite film material, preparation method thereof and packaging bag thereof
  • Biodegradable composite film material, preparation method thereof and packaging bag thereof
  • Biodegradable composite film material, preparation method thereof and packaging bag thereof

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Embodiment 1

[0024] Such as figure 1 As shown, a biodegradable composite film material described in this embodiment, the composite film material 1 includes a PBAT layer 2, a natural cellulose layer 3 and is sandwiched between the PBAT layer 2 and the natural cellulose layer 3 The adhesive layer 4 between them, the PBAT layer 2, the adhesive layer 4 and the natural cellulose layer 3 are bonded together by dry compounding or solvent-free compounding film forming technology.

[0025] The PBAT layer 2 is a degradable material with good comprehensive performance, which can be a film material produced by the ratio of starch, BTAT, PBS and PLA polylactic acid or a single material. Among them, PLA is derived from corn / sugarcane / cassava to extract glucose to synthesize polylactic acid; BTAT and PBS are derived from coal resources to extract biomass fiber. The thickness of the above several natural materials as raw materials is between 15UM and 200UM, and they all have good properties. Heat sealabi...

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Abstract

The invention provides a biodegradable composite film material which comprises a PBAT layer, a natural cellulose layer and an adhesive layer clamped between the PBAT layer and the natural cellulose layer. The PBAT layer, the adhesive layer and the natural cellulose layer are combined together through a composite film forming technology. The natural cellulose layer with temperature resistance, printing adaptability, poor extensibility and no heat sealability and the PBAT layer with poor temperature resistance, heat sealability and extensibility are compounded together through the adhesive layer, and the properties of the natural cellulose layer and the PBAT layer are complementary to each other, so that the composite film material with good surface wetting tension, temperature resistance, heat sealability and capable of meeting the requirements of low-temperature freezing, water boiling and the like can be prepared. The composite film material can be printed and packaged as required; and the main raw materials are completely derived from biological raw materials, can be thoroughly degraded, and are energy-saving and environment-friendly.

Description

technical field [0001] The invention relates to the technical field of degradable film materials, in particular to a biodegradable composite film material, a preparation method and a packaging bag thereof. Background technique [0002] At present, under the implementation of environmental protection concept and plastic restriction order, degradable packaging film is a hot packaging material in the market, and it is gradually replacing plastic film. Degradable film materials are currently mainly used in single-layer film applications. Single-layer applications cannot meet more functional requirements, and fully degradable film materials themselves are mostly derived from natural substances, which have performance defects, making them unable to meet diversified packaging applications. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a biodegradable composite film material, its preparation me...

Claims

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Application Information

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IPC IPC(8): B32B23/00B32B23/08B32B27/36B32B7/12B32B37/06B32B37/10B32B37/12B32B38/16B65D65/40
CPCB32B7/12B32B23/00B32B23/08B32B27/36B32B37/06B32B37/10B32B37/12B32B38/164B32B2038/168B65D65/40Y02W90/10
Inventor 辜伟悦
Owner 珠海市辉丰包装材料有限公司
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