Full-biodegradable high-barrier vacuum evaporation film and preparation method thereof

A biodegradable, vacuum film technology, applied in the direction of chemical instruments and methods, coatings, layered products, etc., can solve unsatisfactory problems, achieve the effect of solving environmental problems, high utilization value, and excellent barrier effect

Inactive Publication Date: 2019-11-12
广东华通新材料科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method helps to improve the bonding fastness between the coating and the substrate, but it still cannot meet some high-demand applications

Method used

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  • Full-biodegradable high-barrier vacuum evaporation film and preparation method thereof
  • Full-biodegradable high-barrier vacuum evaporation film and preparation method thereof
  • Full-biodegradable high-barrier vacuum evaporation film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A biodegradable high-barrier vacuum evaporation film substrate, the film is composed of a high-barrier coating layer 2 and a film substrate layer 1 from top to bottom, and the film substrate layer 1 is composed of an upper surface layer 101 and a core layer 102 , And the lower surface layer 103 is composed.

[0030] The upper surface layer 101 is an evaporation surface, and by weight percentage, the material used for the upper surface layer 101 is 98% modified polylactic acid Composed of 2% anti-adhesion additive masterbatch, the thickness is 1-2μm. Copolymers in this example include Purchased from Toyobo Co., Ltd.

[0031]The core layer 102 provides strength to the substrate and is composed of 100% crystalline polylactic acid (NatureWorks 4060D).

[0032] The lower surface layer 103 is another functional surface. By weight percentage, the lower surface layer 103 is composed of 98% crystalline polylactic acid (NatureWorks Ingeo 4060D) and 2% anti-blocking additiv...

Embodiment 2-3

[0041] A biodegradable gas-barrier evaporation film substrate, the film is composed of a high-barrier coating layer 2 and a film substrate layer 1 from top to bottom, and the film substrate layer 1 is composed of an upper surface layer 101 and a core layer 102 , And the lower surface layer 103 is composed of.

[0042] Upper surface layer 101 is the coating surface, by weight percentage, upper surface layer 101 is made of 98% modified polylactic acid 2% anti-adhesion additive masterbatch with a thickness of 1-2μm.

[0043] The core layer 102 provides strength for the substrate, and the material used is 100% crystalline polylactic acid (NatureWorks Ingeo4060D), with a thickness of 12-100 μm.

[0044] The lower surface layer 103 is another functional surface. By weight percentage, the lower surface layer 103 is composed of 98% crystalline polylactic acid (NatureWorks Ingeo 4060D) and 2% anti-blocking additive masterbatch, with a thickness of 1-2 μm.

[0045] Concrete preparati...

Embodiment 4-5

[0055] A biodegradable gas-barrier vapor-deposited film substrate, which consists of a high-barrier coating layer 2 and a film substrate layer 1 from top to bottom. The film substrate layer 1 is composed of an upper surface layer 101, a core layer 102, and The lower surface layer 103 is composed.

[0056] Upper surface layer 101 is the coating surface, by weight percentage, upper surface layer 101 is made of 68% modified polylactic acid 2% anti-adhesion additive masterbatch composition, the balance is 30% glycidyl methacrylate grafted polylactic acid (PLA-g-GMA) (formulation of embodiment 4) or maleic anhydride grafted polylactic acid (PLA-g-GMA) g-MAH)) (formulation of Example 5), the thickness is 1-2 μm.

[0057] The core layer 102 provides strength for the substrate, and the materials used are 98% crystalline polylactic acid (NatureWorks Ingeo4060D), 2% polylactic acid-based amide type nucleating agent masterbatch, and the thickness is 12-60 μm.

[0058] The lower surfac...

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Abstract

The invention discloses a biodegradable high-barrier vacuum evaporation film base material and a preparation method thereof. A film is sequentially composed of a high-barrier coating layer and a biaxially-oriented polylactic acid (BOPLA) film base material layer from top to bottom, wherein the base material layer consists of an upper surface layer, a core layer and a lower surface layer. The preparation method comprises the following two steps: firstly, preparing a polylactic acid film (BOPLA) base material meeting the coating requirement by using a horizontal drawing method, and then formingthe high-barrier coating layer on the surface of the film base material by using an online coating process or an offline coating process. According to an aluminum-plated film and an aluminum oxide-plated film which are produced by utilizing the high-barrier vacuum evaporation film base material prepared by the invention, the optimal oxygen permeability can be less than 0.02 cc/m<2>.24h, and the optimal water vapor permeability reaches 0.05 g/m<2>.24h; and the high-barrier vacuum evaporation film base material not only has an excellent barrier effect, but also is biodegradable, can effectivelysolve the environmental problem caused by waste packaging films, and is high in industrial utilization value.

Description

technical field [0001] The invention relates to a high-barrier packaging film, in particular to a biodegradable high-barrier vacuum evaporation film substrate and a preparation method thereof. Background technique [0002] Food, medicine, and electronic devices are prone to spoilage or failure in the presence of moisture and oxygen. The use of high-barrier packaging materials to protect processed products is key to solving this problem. High barrier film materials stand out for their excellent barrier properties and have become the preferred way of packaging products in many industries. At present, the usual preparation method of high-barrier packaging films on the market is to coat high-barrier coatings on film substrates and compound them with other functional films. The substrate used is generally one or more of BOPET, BOPP, CPP, BOPA and BOPE. [0003] Due to the light weight of the packaging film and the variety of substrates, this limits the recyclability of the fil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/36B32B27/18B32B27/08B32B33/00B29C41/24B29C55/14B29C59/10
CPCB29C41/24B29C55/143B29C59/10B32B27/08B32B27/18B32B27/36B32B33/00B32B2255/10B32B2307/7163B32B2307/7244B32B2307/7246
Inventor 梁雁扬陈嘉欣梁钦松梁雁锋
Owner 广东华通新材料科技有限公司
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