VMPET coated thin film, and production method

A coating and film technology, which is applied in the field of VMPET series coating films, can solve the problems of decreased barrier performance of the aluminized layer, restricted application, and failure to achieve barrier effects, etc., to achieve reduced production costs, excellent heat sealing performance, and excellent printing performance effect

Inactive Publication Date: 2007-12-26
海南现代高科实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, due to its high metallic luster, good reflectivity and good barrier properties, VMPET film is used in the packaging of high-end food, medicine, daily necessities and other products. As a flexible packaging material, VMPET film is restricted by the following shortcomings. its wider application
[0003] (1) Due to extrusion, friction and other reasons in the process of manufacturing, use, transportation, storage, etc., the aluminized layer is prone to scratches or pinholes. Once the aluminized layer is scratched or pinholed, its barrier performance will be reduced. Dropped sharply, failing to achieve the expected barrier effect
[0004] (2) Does not have heat sealing performance
[0005] (3) Insufficient oxygen barrier ability

Method used

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  • VMPET coated thin film, and production method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0025] Embodiment (1) AC coating / primer 1 / PET-AL / primer 2 / PVDC coating. Primer 1 coating amount is 0.3g / m 2 , the coating amount of primer 2 is 0.8g / m 2 , PVDC coating amount is 4.0g / m 2 , AC coating weight is 1.0g / m 2 , Cured for 2 days at 42°C. The coating speed is 200m / min; the drying temperature is 130°C; the drying time is 8 seconds. In addition, the primer is dried with hot air, and the top coat is dried with a combination of far-infrared heating and hot air. Coating material formula: (1) Primer coating material formula (both surfaces are the same primer formula) - weigh 20kg of polyurethane adhesive (solid content 55%), curing agent 4kg (solid content 55%), mix and stir evenly . (2) PVDC coating material formula for surface coating—weigh 250kg of PVDC emulsion (solid content 49%), wax emulsion 14.7kg (solid content 25%), anti-adhesive agent 1.2kg (solid content 10%), soft water 14.8kg , mix and stir evenly; surface coating AC coating material formula - weigh AC e...

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Abstract

The invention relates to a novel coated film and the producing method thereof. And it is a VMPET coated film, produced by coating PVDC, PVOH and AC as main raw materials on VMPET.

Description

Technical field [0001] The invention relates to a biaxially stretched polyester aluminized film (VMPET) as the base material, polyvinylidene chloride (PVDC), modified polyvinyl alcohol (PVOH) and acrylic acid (AC) as the main raw materials. VMPET series coating films and production methods with various properties are produced by fabric production. Background technique [0002] At present, due to its high metallic luster, good reflectivity and good barrier properties, VMPET film is used in the packaging of high-end food, medicine, daily necessities and other products. As a flexible packaging material, VMPET film is restricted by the following shortcomings. its wider application. [0003] (1) Due to extrusion, friction and other reasons in the process of manufacturing, use, transportation, storage, etc., the aluminized layer is prone to scratches or pinholes. Once the aluminized layer is scratched or pinholed, its barrier performance will be reduced. A sharp drop, not up to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/08B65D65/40B29C41/32B29C71/02B29D7/01
Inventor 谢文波王绍亮
Owner 海南现代高科实业有限公司
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