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A kind of ultra-high barrier transparent aluminum oxide film and its manufacturing method

A technology of aluminum oxide coating and aluminum oxide layer, which is applied in the direction of chemical instruments and methods, coatings, layered products, etc., can solve problems such as insufficient adhesion, achieve reduced coating costs, broad application prospects, and high solid content Effect

Active Publication Date: 2016-05-04
HAINAN SHINER IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its innovations are as follows: First, the protective coating is a coating made of self-adhesive PVOH coating through a coating process. When this coating is used in the coating process, it can be directly coated on the aluminum oxide layer without pre-coating primer. On, and strong adhesion, to overcome the conventional self-adhesive PVOH paint application on the aluminum oxide layer of insufficient adhesion defects (see Table 1)

Method used

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  • A kind of ultra-high barrier transparent aluminum oxide film and its manufacturing method
  • A kind of ultra-high barrier transparent aluminum oxide film and its manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1. Preparation of self-adhesive PVOH coating

[0035] Mix and stir 19% polyvinyl alcohol and 75% deionized water into the reaction kettle, gradually raise the temperature to 89°C, turn on the stirring device, set the stirring speed to 110 rpm, stir for 15 minutes, keep the constant temperature for 2.8 hours after stirring, add 0.002% silicone defoamer, cool down to 45°C, then add 0.018% sodium dodecylbenzenesulfonate, slowly add 0.08% lauric acid and 1.2% methyl etherified melamine resin dropwise, control the dropping rate within 2 hours After the addition, keep it for 1.5 hours after the dropwise addition, then add 4.7% polyethyleneimine, raise the temperature to 70°C and stir for 2.5 hours, after cooling down to room temperature, filter and discharge the material to obtain a self-adhesive PVOH coating with a solid content of 25%.

[0036] 2. Manufacture of aluminum oxide film

[0037] Place the reel of PET substrate film in the vacuum chamber, close the vacuum chambe...

Embodiment 2

[0040] 1. Preparation of self-adhesive PVOH coating

[0041] Mix and stir 14% polyvinyl alcohol and 82% deionized water into the reaction kettle, gradually raise the temperature to 88°C, turn on the stirring device, set the stirring speed to 100 rpm, stir for 17 minutes, keep the constant temperature for 2.5 hours after stirring, add 0.004% silicone defoamer, cool down to 47°C, then add 0.026% sodium dodecylbenzenesulfonate, slowly add 0.04% lauric acid and 1.93% methyl etherified melamine resin dropwise, control the dropping rate within 2 hours After the addition, keep for 1 hour after the dropwise addition, then add 2% polyethyleneimine, raise the temperature to 80°C and stir for 2.5 hours, cool down to room temperature, filter and discharge, and obtain a self-adhesive PVOH coating with a solid content of 18%.

[0042] 2. Manufacture of aluminum oxide film

[0043] Place the reel of PET substrate film in the vacuum chamber, close the vacuum chamber to evacuate, when the vac...

Embodiment 3

[0046] 1. Preparation of self-adhesive PVOH coating

[0047] Mix and stir 16% polyvinyl alcohol and 77.1% deionized water into the reaction kettle, gradually raise the temperature to 90°C, turn on the stirring device, set the stirring speed to 130 rpm, stir for 20 minutes, keep the constant temperature for 3.2 hours after stirring, add 0.002% silicone defoamer, cool down to 46°C, then add 0.018% sodium dodecylbenzenesulfonate, slowly add 0.08% lauric acid and 1.8% methyl etherified melamine resin dropwise, control the dropping rate within 2 hours After the addition was completed, keep it for 1.3 hours after the dropwise addition, then add 5% polyethyleneimine, raise the temperature to 72°C and stir for 2.5 hours, after cooling down to room temperature, filter and discharge the material to obtain a self-adhesive PVOH coating with a solid content of 22.9%.

[0048] 2. Manufacture of aluminum oxide film

[0049] Place the reel of PET substrate film in the vacuum chamber, close t...

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Abstract

The invention relates to an ultrahigh-barrier transparent aluminum oxide plated thin film. The ultrahigh-barrier transparent aluminum oxide plated thin film is of a three-layer structure consisting of a PET (polyethylene terephthalate) base material, an aluminum oxide plated layer and a protection coating layer arranged on the aluminum oxide plated layer, wherein the PET base material film is 9-14 microns thick; the aluminum oxide plated layer is an aluminum oxide layer which is formed by plating an aluminum strip and a high-oxygen-purity reactant on the PET base material in vacuum under the temperature of 1,500 DEG C; the protection coating layer is a self-adhesive polyvinyl alcohol coating layer; PVOH is prepared from the following raw materials in percentage by weight: 14-20 percent of polyvinyl alcohol, 1.2-1.93 percent of methyl etherification melamine resin, 0.03-0.1 percent of lauric acid, 0.017-0.028 percent of sodium dodecyl benzene sulfonate, 0.002-0.008 percent of an organic silicon defoaming agent, 75-82 percent of deionized water and 2-5 percent of polyethyleneimine; the polymerization degree of polyvinyl alcohol is 300, and the alcoholysis degree is 99 percent.

Description

technical field [0001] The invention relates to an ultra-high barrier transparent aluminum oxide film and a manufacturing method thereof, belonging to the field of new polymer materials. technical background [0002] Aluminized film is a composite flexible packaging material formed by coating a layer of extremely thin metal aluminum on the surface of plastic film by special technology. Because it has both the characteristics of plastic film and metal, it is a cheap and beautiful packaging material with excellent performance and strong practicability, which makes it occupy a place in the food packaging industry. But its shortcomings are opaque, poor coating strength, and cannot be used for microwave heating. These shortcomings greatly limit its application range. [0003] The aluminum oxide film has good transparency, excellent oxygen barrier and moisture barrier properties, and the processing cost is reasonable, and its barrier properties will not change under high temperat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B9/04C09D129/04C09D161/32C09D179/02C09D7/12C23C14/24
CPCB32B27/06B32B27/30B32B27/36C09D7/40C09D129/04C09D161/32C09D179/02C23C14/24
Inventor 黄宏存王恩飞朱海
Owner HAINAN SHINER IND
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