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Oxidation type biodegradable biaxially-stretchable bio-based nylon film and preparation method thereof

A bio-based nylon, two-way stretching technology, applied in the direction of chemical instruments and methods, types of packaging items, special packaging items, etc., to achieve excellent biodegradability, reduce consumption, and broad industrial application prospects

Inactive Publication Date: 2018-08-31
XIAMEN CHANGSU INDAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are few reports on the research on biodegradable nylon films.

Method used

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  • Oxidation type biodegradable biaxially-stretchable bio-based nylon film and preparation method thereof
  • Oxidation type biodegradable biaxially-stretchable bio-based nylon film and preparation method thereof

Examples

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preparation example Construction

[0030] The preparation method of the above-mentioned oxidative biodegradable biaxially stretched bio-based nylon film comprises the following steps:

[0031] (1) each component in the surface layer 1, the core layer and the surface layer 2 is mixed in proportion, and dispersed uniformly by a high-speed mixer;

[0032] (2) The raw materials of the surface layer 1, the core layer and the surface layer 2 are melted and co-extruded in three extruders in proportion, and the melt is cast through a T-shaped die to a surface temperature of 15 to 35°C. Chilled roll quenched cast sheet;

[0033] (3) The unstretched cast sheet is subjected to a humidity-conditioning treatment for about 1 minute in a water tank at 40-70°C. The surface of the cast sheet after humidity-conditioning is dried with an air knife to dry the residual moisture on the surface, and a magnetic levitation linear motor is used to synchronize Stretching technology carries out horizontal and vertical simultaneous stretchi...

Embodiment 1

[0036] In this example, the top layer 1 is bonded with 98.75% bio-based nylon 56, 0.5% oxo-biodegradant, 0.2% silica, 0.1% erucamide, 0.15% diffusing oil, 0.3% glycidyl methacrylate Branched ethylene-octene block copolymer; core layer is made of 99.05% bio-based nylon 56, 0.5% oxygenated biodegradant, 0.15% diffusing oil, 0.3% glycidyl methacrylate grafted ethylene-octene block Copolymer composition; skin 2 consists of 98.75% bio-based nylon 56, 0.5% oxo-biodegradant, 0.2% silica, 0.1% erucamide, 0.15% diffusing oil, 0.3% glycidyl methacrylate grafted ethylene - Composition of octene block copolymers.

[0037] Wherein, the oxygen-containing biodegradation agent is the following mixture: pentose sugar: plant cellulose: cerium-containing metal salt: polylactic acid=1:1:1:1.

[0038] The sample was prepared according to the aforementioned preparation method, and the total thickness of the obtained film was 15 μm, and the thickness of the core layer was 12 μm.

example 2

[0040] In this example, the top layer 1 is bonded with 98.25% bio-based nylon 56, 1% oxo-biodegradant, 0.2% silica, 0.1% erucamide, 0.15% diffusing oil, 0.3% glycidyl methacrylate Branched ethylene-octene block copolymer; core layer is made of 98.55% bio-based nylon 56, 1% oxygenated biodegradant, 0.15% diffusing oil, 0.3% glycidyl methacrylate grafted ethylene-octene block Copolymer composition; skin 2 is composed of 98.25% bio-based nylon 56, 1% oxygen biodegradant, 0.2% silica, 0.1% erucamide, 0.15% diffusing oil, 0.3% glycidyl methacrylate grafted ethylene - Composition of octene block copolymers.

[0041] Wherein, the oxygen-containing biodegradation agent is the following mixture: pentose sugar: plant cellulose: cobalt-containing metal salt: polylactic acid=0.5:1:1:1.

[0042] The sample was prepared according to the aforementioned preparation method, and the total thickness of the obtained film was 15 μm, and the thickness of the core layer was 12 μm.

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Abstract

The invention provides an oxidation type biodegradable biaxially-stretchable bio-based nylon film. The oxidation type biodegradable biaxially-stretchable bio-based nylon film has a three-layer structure composed of a surface layer 1, a core layer and a surface layer 2, wherein the surface layer 1 and the surface layer 2 are composed of the following components in percentages by mass: 96.2% to 99%of bio-based nylon, 0.5% to 2% of an oxygen-containing biodegrading agent, 0.1% to 0.5% of an adhesion inhibitor, 0.1% to 0.5% of a slipping agent, 0.1% to 0.3% of a dispersant and 0.2% to 0.5% of a compatibilizing agent; and the core layer is composed of the following components in percentages by mass: 97.2% to 99.2% of the bio-based nylon, 0.5% to 2% of the oxygen-containing biodegrading agent,0.1% to 0.3% of the dispersant and 0.2% to 0.5% of the compatibilizing agent. Meanwhile, the invention also provides a preparation method for the oxidation type biodegradable biaxially-stretchable bio-based nylon film.

Description

technical field [0001] The invention belongs to the field of flexible packaging materials, and in particular relates to an oxidative biodegradable biaxially stretched bio-based nylon film and a preparation method thereof. Background technique [0002] Biaxially oriented nylon film (BOPA), as a new type of high-grade packaging material, is an important material for the production of various composite packaging materials. At present, it has become the third largest packaging material after BOPP and BOPET film. It is widely used as a packaging material in the fields of food processing, medicine and hygiene, and chemical products. It is especially suitable for frozen packaging, vacuum packaging and steaming packaging. At present, the global demand for BOPA is about 300,000 tons / year, of which domestic demand accounts for more than 40%, and its market growth rate reaches 10%. [0003] Due to the scattered nature and extensive use of flexible packaging products, they are basical...

Claims

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Application Information

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IPC IPC(8): C08L77/06C08L67/04C08L1/02C08L51/06C08K13/02C08K5/053C08K3/36C08J5/18B32B27/34B32B27/08B32B27/18B29C47/06
CPCB29C48/022B29C48/18B32B27/08B32B27/18B32B27/34B32B2307/50B32B2307/7163B32B2439/70B32B2439/80C08J5/18C08J2377/06C08J2451/06C08L77/06C08L2201/06C08L2203/16C08L2205/035C08L67/04C08L1/02C08L51/06C08K13/02C08K5/053C08K3/36
Inventor 林新土刘运锦贾露陈曦
Owner XIAMEN CHANGSU INDAL
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