High-resistance antibacterial PE (polyethylene) film and preparation method thereof

A high-barrier, nano-technology, applied in the field of high-barrier antibacterial PE film and its preparation, can solve the problems of poor barrier antibacterial effect, etc., achieve good barrier properties, improve antibacterial properties and barrier properties, and broaden the application effect.

Active Publication Date: 2013-07-17
ANHUI SONGTAI PACKAGING MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its main disadvantage is that it has poor barrier properties to oxygen, water vapor, etc. and poor antibacterial effect.
Although it is currently the most widely used and used plastic packaging film, it is often used as the inner layer film of composite flexible packaging materials.

Method used

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  • High-resistance antibacterial PE (polyethylene) film and preparation method thereof
  • High-resistance antibacterial PE (polyethylene) film and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] In this embodiment, the high-barrier antibacterial PE film is that the nanocomposite modified masterbatch is added to the LDPE matrix resin, and the high-barrier antibacterial PE film is obtained by extrusion blow molding; the quality of the nanocomposite modified masterbatch is the LDPE matrix 5% of resin mass. The ratio of each component is:

[0025] 100 parts of LDPE, 6.0 parts of nano ZnO, 20 parts of montmorillonite, 20 parts of maleic anhydride grafted polyethylene;

[0026] Its preparation method is as follows:

[0027] 1) First disperse 20 parts by mass of montmorillonite in 1mol L -1 In the zinc chloride aqueous solution, the solid-to-liquid ratio is 1g / 10ml, stirred at a constant temperature of 65°C for 4h, filtered and washed repeatedly until there is no zinc ion in the filtrate, dried by blasting at 80°C for 24h, then put into a muffle furnace for drying at 400°C Bake for 2 hours to obtain montmorillonite loaded with nano-ZnO with a loading capacity of 30...

Embodiment 2

[0033] In this embodiment, the high-barrier antibacterial PE film is that the nanocomposite modified masterbatch is added to the LDPE matrix resin, and the high-barrier antibacterial PE film is obtained by extrusion blow molding; the quality of the nanocomposite modified masterbatch is the LDPE matrix 3% of resin mass. The ratio of each component is:

[0034] 100 parts of LDPE, 8.0 parts of nano ZnO, 30 parts of montmorillonite, 30 parts of maleic anhydride grafted polyethylene;

[0035] Its preparation method is as follows:

[0036] 1) Disperse 30 parts by mass of montmorillonite in 1mol L -1 In the zinc chloride aqueous solution, the solid-to-liquid ratio is 1g / 10ml, stirred at a constant temperature of 65°C for 4h, filtered and washed repeatedly until there is no zinc ion in the filtrate, dried by blasting at 80°C for 24h, then put into a muffle furnace for drying at 400°C Bake for 2 hours to obtain montmorillonite loaded with nano-ZnO with a loading capacity of 27%.

...

Embodiment 3

[0042] In this embodiment, the high-barrier antibacterial PE film is that the nanocomposite modified masterbatch is added to the LDPE matrix resin, and the high-barrier antibacterial PE film is obtained by extrusion blow molding; the quality of the nanocomposite modified masterbatch is the LDPE matrix 8% of resin mass. The ratio of each component is:

[0043] 100 parts of LDPE, 3.2 parts of nano ZnO, 10 parts of montmorillonite, 10 parts of maleic anhydride grafted polyethylene;

[0044] Its preparation method is as follows:

[0045] 1) Disperse 10 parts by mass of montmorillonite in 1mol L -1 In the aqueous solution of zinc acetate, the solid-to-liquid ratio is 1g / 10ml, stirred at 65°C for 4h, filtered and washed repeatedly until there is no zinc ion in the filtrate, dried by blast at 80°C for 24h, then baked in a muffle furnace at 400°C 2h, the montmorillonite loaded with nano-ZnO was obtained with a loading of 32%.

[0046] 2) Disperse the nano-ZnO-loaded montmorillonite ...

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Abstract

The invention discloses a high-resistance antibacterial PE (polyethylene) film and a preparation method thereof, wherein the high-resistance antibacterial PE film is prepared in the way that nanometer composite modified master batch is added to LDPE (low density polyethylene) matrix resin and finally extrusion blown molding is carried out; the mass of the nanometer composite modified master batch is 3-8% of the mass of the LDPE matrix resin; and the nanometer composite modified master batch is prepared by carrying out blending extrusion on nanometer ZnO loaded organic montmorillonite, LDPE and maleic anhydride grafted polyethylene, the organic montmorillonite loading the nanometer ZnO is prepared by intercalation composition of nanometer ZnO loaded montmorillonite and an intercalation agent, and the nanometer ZnO loaded montmorillonite is prepared by loading the nanometer ZnO on montmorillonite. Compared with a pure PE film, the high-resistance antibacterial PE film disclosed by the invention has the advantages that the oxygen transmission rate is reduced by 31%, the water transmission rate is reduced by 40% and the antibacterial rate is up to 99.7%.

Description

1. Technical field [0001] The invention belongs to the preparation technology of food and medicine packaging film materials, in particular to a high-barrier antibacterial PE film and a preparation method thereof. 2. Background technology [0002] PE film is a translucent and soft film with good chemical stability, temperature resistance, heat sealing and moisture resistance, and is widely used in food and pharmaceutical packaging materials. Its main disadvantage is that it has poor barrier properties to oxygen, water vapor, etc. and poor antibacterial effect. Although it is currently the most widely used and used plastic packaging film, it is often used as the inner film of composite flexible packaging materials. 3. Contents of the invention [0003] The invention aims to provide a high-barrier antibacterial PE film and a preparation method thereof. The technical problem to be solved is to modify PE to improve the barrier and antibacterial performance of the PE packaging ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L51/06C08K9/12C08K9/04C08K3/22C08K3/34C08J3/22
Inventor 焦国平王华林翟林峰齐继业
Owner ANHUI SONGTAI PACKAGING MATERIALS
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