Extra-high obstruction membrane plated with aluminium oxide through coextrusion and biaxial tension and manufacturing method of extra-high obstruction membrane

A technology of aluminum oxide plating and biaxial stretching, applied in the field of polymers, can solve the problems of limited barrier properties, short shelf life of food and medicine, and unreachable shelf life, etc., to achieve high transparency and improve the effect of oxygen barrier and moisture resistance.

Active Publication Date: 2015-03-04
HAINAN SHINER IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the barrier films produced by dry compounding, coating, co-extrusion blow molding or co-extrusion casting on the market have good barrier effects and are widely used in the fields of food, medicine and other materials, but due to their oxygen, water vapor The limitation of barrier properties makes food and medicine have a short shelf life, which often cannot reach the ideal shelf life

Method used

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  • Extra-high obstruction membrane plated with aluminium oxide through coextrusion and biaxial tension and manufacturing method of extra-high obstruction membrane
  • Extra-high obstruction membrane plated with aluminium oxide through coextrusion and biaxial tension and manufacturing method of extra-high obstruction membrane
  • Extra-high obstruction membrane plated with aluminium oxide through coextrusion and biaxial tension and manufacturing method of extra-high obstruction membrane

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Experimental program
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Effect test

Embodiment 1

[0034] Ingredients: Produce aluminum oxide film with a thickness of 15um. The thickness of the upper layer of the substrate is 0.8um, of which the content of copolymerized polypropylene is 98.0%, and the content of anti-blocking agent is 2.0%; the thickness of the upper layer of the substrate is 2um, of which the content of homopolypropylene is 100%; 97% propylene polymer, 3% copolymerized polyethylene; the thickness of the next layer of the substrate is 0.6um, of which 80% is polypropylene polyvinyl alcohol adhesive resin, and 20% is copolymerized polypropylene resin; the thickness of the lower layer of the substrate is 0.6um, of which the high viscosity is not Crystal copolyamide 50%, polyamide 50%.

[0035] Film production: The five-layer barrier substrate film of the present invention is produced by co-extrusion biaxial stretching process, wherein the temperature of the upper layer extruder: 230 degrees; the temperature of the upper layer extruder: 245 degrees; the tempera...

Embodiment 2

[0039] Ingredients: Produce aluminum oxide film with a thickness of 21.3um. The thickness of the upper layer of the substrate is 1.6um, in which the content of copolymerized polypropylene is 98.0%, and the anti-blocking agent is 2.0%; the thickness of the upper layer of the substrate is 4um, in which the content of homopolypropylene is 100%; 97% propylene polymer, 3% copolymerized polyethylene; the thickness of the next layer of the substrate is 0.9um, of which polypropylene polyvinyl alcohol adhesive resin is 75%, and the copolymerized polypropylene resin is 25%; the thickness of the lower layer of the substrate is 0.8um, of which the high viscosity is not Crystal copolyamide 42%, polyamide 58%.

[0040] Film production: The five-layer barrier substrate film of the present invention is produced by co-extrusion biaxial stretching process, wherein the temperature of the upper layer extruder: 220 degrees; the temperature of the upper layer extruder: 240 degrees; the temperature ...

Embodiment 3

[0044] Ingredients: Produce aluminum oxide film with a thickness of 22um. The thickness of the upper layer of the substrate is 1.2um, of which the content of copolymerized polypropylene is 97.0%, and the content of anti-blocking agent is 3.0%; the thickness of the upper layer of the substrate is 3um, of which the content of homopolypropylene is 100%; 96% polypropylene polymer, 4% copolymerized polyethylene; the thickness of the next layer of the substrate is 0.8um, of which polypropylene polyvinyl alcohol adhesive resin is 85%, and copolymerized polypropylene resin is 15%; the thickness of the lower layer of the substrate is 0.6um, and the high viscosity Amorphous copolyamide 45%, polyamide 55%.

[0045] Film production: The five-layer barrier substrate film of the present invention is produced by co-extrusion biaxial stretching process, wherein the temperature of the upper layer extruder: 232 degrees; the temperature of the upper layer extruder: 248 degrees; the temperature o...

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Abstract

The invention relates to an extra-high obstruction membrane plated with aluminium oxide through coextrusion and biaxial tension and a manufacturing method of the extra-high obstruction membrane. The membrane adopts a six-layer structure and comprises an upper layer, an upper secondary layer, a middle layer, a lower secondary layer, a lower layer, and a layer plated with the aluminium oxide. The upper layer is compounded by the following raw materials in percentage by weight: 96-98% of co-polypropylene and 2-4% of an antiblocking agent; the upper secondary layer is compounded by the following raw material in percentage by weight: 100% of homo-polypropylene; the middle layer is compounded by the following raw materials in percentage by weight: 95-97% of the homo-polypropylene and 3-5% of co-ethylene; the lower secondary layer is compounded by the following raw materials in percentage by weight: 75-85% of bonding resin and 15-25% of co-polypropylene resin; the lower layer is compounded by the following raw materials in percentage by weight: 40-50% of high-viscosity amorphous polyamides and 50-60% of polyamides; the thickness of the layer plated with the aluminium oxide is 300-600 angstroms.

Description

technical field [0001] The invention relates to a CO / PP / PP / AD / PA barrier film produced by co-extrusion biaxial stretching technology, and then aluminum oxide is plated on the barrier film, belonging to the polymer field. Background technique [0002] At present, the barrier films produced by dry compounding, coating, co-extrusion blow molding or co-extrusion casting on the market have good barrier effects and are widely used in the fields of food, medicine and other materials, but due to their oxygen, water vapor The limitation of barrier properties makes food and medicine have a short shelf life, which often cannot reach the ideal shelf life. However, if aluminum oxide is coated on the CO / PP / PP / AD / PA five-layer co-extruded biaxially stretched barrier film produced by biaxial stretching technology, it will endow the barrier film with ultra-high oxygen barrier and water barrier properties, greatly The shelf life of food and medicine is increased, and at the same time, it has...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/32B32B27/08B32B15/088B65D65/40
CPCB32B9/045B32B27/08B32B27/32B65D65/40
Inventor 黎坛王俊峰
Owner HAINAN SHINER IND
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