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

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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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Example Embodiment

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

[0031] (1) The components in the surface layer 1, the core layer and the surface layer 2 are separately mixed in proportions, 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 respectively melted and co-extruded in three extruders according to the proportions, and the melt is cast through a T-die to a surface temperature of 15 to 35 ℃ Chill roll quench cast sheet;

[0033] (3) Put the unstretched cast piece in a water tank at 40~70℃ for about 1min to adjust the humidity. After the humidity control, the surface of the cast piece is dried with an air knife, and the magnetic suspension linear motor is used for synchronization. The stretching technology performs simultaneous horizontal and vertical stretching, wherein the stretching temperature i...

Example Embodiment

[0035] Example 1

[0036] In this embodiment, the surface layer 1 is made of 98.75% bio-based nylon 56, 0.5% oxygen-containing biodegradation agent, 0.2% silicon dioxide, 0.1% erucamide, 0.15% diffusion oil, 0.3% glycidyl methacrylate. The core layer is composed of 99.05% bio-based nylon 56, 0.5% oxygen-containing biodegradation agent, 0.15% diffusion oil, 0.3% glycidyl methacrylate grafted ethylene-octene block copolymer; Copolymer composition; surface layer 2 is made of 98.75% bio-based nylon 56, 0.5% aerobic biodegradation agent, 0.2% silica, 0.1% erucamide, 0.15% diffusion oil, 0.3% glycidyl methacrylate grafted with ethylene -Octene block copolymer composition.

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

[0038] The samples were prepared according to the aforementioned preparation method, and the total thickness of the obtained film was 15 μm, and the...

Example Embodiment

[0039] Example 2

[0040] In this embodiment, the surface layer 1 is made of 98.25% bio-based nylon 56, 1% oxygen-containing biodegradation agent, 0.2% silicon dioxide, 0.1% erucamide, 0.15% diffusion oil, 0.3% glycidyl methacrylate. The core layer is composed of 98.55% bio-based nylon 56, 1% oxygen-containing biodegradation agent, 0.15% diffusion oil, 0.3% glycidyl methacrylate grafted ethylene-octene block copolymer; Copolymer composition; surface layer 2 is made of 98.25% bio-based nylon 56, 1% oxygen-containing biodegradation agent, 0.2% silica, 0.1% erucamide, 0.15% diffusion oil, 0.3% glycidyl methacrylate grafted ethylene -Octene block copolymer composition.

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

[0042] The samples were prepared according to the aforementioned preparation method, and the total thickness of the obtained film was 15 μm, and ...

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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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