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A kind of high barrier easily degradable green packaging film and preparation method thereof

An easily degradable, packaging film technology, applied in the direction of chemical instruments and methods, other household appliances, synthetic resin layered products, etc., can solve the problem of limited recycling

Active Publication Date: 2019-11-29
无锡方成包装科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although many of the plastic bags and bottles we use are marked as "recyclable" and "degradable", in fact, the degree of recycling of these plastic products is limited

Method used

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  • A kind of high barrier easily degradable green packaging film and preparation method thereof
  • A kind of high barrier easily degradable green packaging film and preparation method thereof
  • A kind of high barrier easily degradable green packaging film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1 Preparation of high barrier and easily degradable green packaging film

[0021] (1) Preparation of nano-layered magnesium iron hydroxide: Add solid sodium hydroxide with a molar ratio of 5:1:1:magnesium nitrate hexahydrate:ferric nitrate nonahydrate into a planetary ball mill at a material-to-ball ratio of 1:2 Mix and react with vibration and milling for 40 minutes at a speed ratio of 1:1.2, wash the obtained micropowder with water to neutrality, and vacuum dry for 30 minutes at a vacuum degree of 5kPa and 50°C to obtain nano-layered magnesium iron hydroxide;

[0022] (2) Preparation of inner layer film masterbatch containing hydrophilic modified nano-layered magnesium iron hydroxide: according to low-density polyethylene (grade 2426H, Daqing Petrochemical): linear low-density polyethylene (grade 7042, Jilin Petrochemical): The mass ratio of nano-layered magnesium iron hydroxide: glycidyl methacrylate grafted octene ethylene copolymer is 1: 7: 1: 0.1, and the ...

Embodiment 2

[0024] Example 2 Preparation of high barrier and easily degradable green packaging film

[0025](1) Preparation of nano-layered magnesium aluminum hydroxide: Add solid sodium hydroxide with a molar ratio of 5:1:1: magnesium nitrate hexahydrate: aluminum nitrate nonahydrate to a planetary ball mill, and the ratio of material to ball is 1:5 Vibrating and milling for 100 minutes at a speed ratio of 1:1.2, then washing the obtained micropowder with water to neutrality, and drying in vacuum at 20kPa and 70°C for 60 minutes to obtain nano-layered magnesium aluminum hydroxide;

[0026] (2) Preparation of the inner layer film masterbatch containing hydrophilic modified nano-layered magnesium aluminum hydroxide: low-density polyethylene (grade 2426H, Yanba): linear low-density polyethylene (grade 7042, Fushun Petrochemical): The mass ratio of nano-layered magnesium aluminum hydroxide: glycidyl methacrylate grafted octene ethylene copolymer is 1:9:2:0.5, and the ingredients are mixed, a...

Embodiment 3

[0028] Example 3 Preparation of high barrier and easily degradable green packaging film

[0029] (1) Preparation of nano-layered magnesium iron hydroxide: Add solid sodium hydroxide with a molar ratio of 5:1:1:magnesium nitrate hexahydrate:ferric nitrate nonahydrate into a planetary ball mill at a material-to-ball ratio of 1:3 Mix and react with vibration and milling for 50 minutes at a speed ratio of 1:1.2, wash the obtained micropowder with water to neutrality, and vacuum dry at a vacuum degree of 10kPa and 60°C for 40 minutes to obtain nano-layered magnesium iron hydroxide;

[0030] (2) Preparation of inner layer film masterbatch containing hydrophilic modified nano-layered magnesium iron hydroxide: according to low density polyethylene (grade 2426H, Yanba): linear low density polyethylene (grade 7042, Jilin Petrochemical): The mass ratio of nano-layered magnesium iron hydroxide: glycidyl methacrylate grafted octene ethylene copolymer is 1: 8: 1.5: 0.2, and the ingredients ...

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Abstract

The invention relates to a high-barrier easy-degradation green packaging film and a preparation method thereof, which belong to the technical field of a package film in a composite high-molecular material. Based on a current three-layer co-extrusion polyethylene thin-film technology, hydrophobic modified polyethylene is taken as an external layer, polyethylene, high-barrier performance polyethylene glycol, a polyethylene glycol-polymethacrylate diblock copolymer and maleic anhydride-grafted polypropylene as a middle layer, hydrophilic-modified nano layered hydroxide is taken as an oxygen-barrier layer filler and glycidyl methacrylate-grafted ethylene octane copolymer blending modified polyethylene as an internal layer, and through three-layer co-extrusion casting, the high-barrier easy-degradation green packaging film is prepared. The prepared high-barrier easy-degradation green packaging film has the advantages of low cost and easy production technology, has excellent oxygen and watervapor barrier performance, and is easily degraded.

Description

technical field [0001] The invention relates to a high barrier and easily degradable green packaging film and a preparation method thereof, in particular to a high barrier and easily degradable three-layer co-extrusion packaging film and a preparation method thereof, belonging to the technical field of packaging films in composite polymer materials. Background technique [0002] It is reported that an average of about 90kg of synthetic polymers are consumed per person per year worldwide, most of which are not biodegradable or recycled. The world produces more than 270 million tons of plastic every year, of which 18 million tons flow into the ocean, and 244,000 tons have accumulated so far. Plastic has become a catastrophe to the ecological environment. Although many of the plastic bags, plastic bottles and other products we use are marked as "recyclable" and "degradable", in fact, the degree of recycling of these plastic products is limited. my country's annual production o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/32B32B27/08B32B27/06B32B27/28B32B27/20B32B27/18C08L23/08C08L23/06C08L67/04C08K5/103C08L71/02C08L51/06C08K3/22C08J5/18
CPCB32B27/08B32B27/18B32B27/20B32B27/28B32B27/32B32B2307/716B32B2307/7244B32B2307/7246B32B2553/00C08J5/18C08J2323/08C08J2423/06C08J2451/06C08J2467/04C08J2471/02C08K5/103C08K2003/2224C08K2003/2227
Inventor 高源
Owner 无锡方成包装科技股份有限公司