Low-temperature heat-seal high-separating coating thin film and production method thereof

A low-temperature heat-sealing and high-barrier technology, applied in chemical instruments and methods, flexible coverings, lamination, etc., can solve the problems of easy deliquescence or deterioration of food, sticking of chewing gum, and restrictions on the development of the chewing gum industry. Exquisite appearance, lower sealing temperature, and quality protection effect

Active Publication Date: 2015-05-20
HAINAN SHINER IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. The heat seal strength is low, the seal is not firm, and the fragrance is lost
[0004] 2. The sealing temperature is too high, and the chewing gum is prone to sticking
[0005] 3. Poor barrier performance, high water and oxygen permeability, food is easy to deliquesce or deteriorate
[0006] These shortcomings make chewing gum products have limitations in time and transportation in the promotion process, which also limits the development of the chewing gum industry.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Add 4 kg of acrylic acid monomer, 6 kg of methyl acrylate monomer, 6 kg of ethyl acrylate monomer and 4 kg of demineralized water into the reactor for copolymerization, slowly heat up to 50°C, start the mixer, and the stirring speed is 60 revs / min, 20 kilograms of acrylic emulsions were obtained after 30 minutes. Then add 60 kg of demineralized water, 10 kg of slippery agent, and 10 kg of anti-sticking agent, set the stirring speed at 60 rpm, and stir for 30 minutes to obtain acrylic latex.

[0037]Take 60 kg of vinylidene chloride (VDC) monomer, 30 kg of acrylic acid monomer, and 10 kg of demineralized water, mix them in the reactor for copolymerization, slowly heat up to 50 ° C, start the mixer, and the stirring speed is 60 rpm , 100 kg of PVDC emulsion was obtained after 30 minutes. Take 80 kg of the obtained PVDC emulsion, add 13 kg of demineralized water, 5 kg of emulsifier, and finally add 2 kg of defoamer, start stirring, set the speed at 60 rpm, and obtain PVDC...

Embodiment 2

[0041] Add 12 kg of acrylic acid monomer, 12 kg of methyl acrylate monomer, 12 kg of ethyl acrylate monomer and 4 kg of demineralized water into the reactor for copolymerization, slowly heat up to 45°C, start the mixer, and the stirring speed is 80 rpm, 40 kg of acrylic emulsion was obtained after 30 minutes. Take 30 kg of acrylic emulsion, add 50 kg of demineralized water, 10 kg of slip agent, and 10 kg of anti-sticking agent, set the stirring speed at 80 rpm, and stir for 30 minutes to obtain acrylic latex.

[0042] Take 65 kg of vinylidene chloride (VDC) monomer, 25 kg of acrylic acid monomer, and 10 kg of demineralized water, mix them in a 50L reactor for copolymerization, slowly heat up to 50°C, start the mixer, and the stirring speed is 80 rpm Minutes, 100 kg of PVDC emulsion was prepared after 30 minutes. Take 82 kg of the obtained PVDC emulsion, add 12 kg of demineralized water, 4 kg of emulsifier, and finally add 2 kg of defoamer, start stirring, set the speed at 80 ...

Embodiment 3

[0046] Add 20 kg of acrylic acid monomer, 10 kg of methyl acrylate monomer, 10 kg of ethyl acrylate monomer and 10 kg of demineralized water into the reactor for copolymerization, slowly heat up to 50°C, start the mixer, and the stirring speed is 100 revs / min, 50 kilograms of acrylic acid emulsions were obtained after 30 minutes. Take 40 kg of acrylic emulsion, add 45 kg of demineralized water, 10 kg of slippery agent, 5 kg of anti-sticking agent, set the stirring speed at 100 rpm, and stir for 30 minutes to obtain acrylic latex.

[0047] Take 70 kg of vinylidene chloride (VDC) monomer, 20 kg of acrylic acid monomer, and 10 kg of demineralized water, mix them in the reactor for copolymerization, slowly heat up to 60 °C, start the mixer, and the stirring speed is 100 rpm , 100 kg of PVDC emulsion was obtained after 30 minutes. Take 83 kg of the obtained PVDC emulsion, add 12 kg of demineralized water, 4 kg of emulsifier, and finally add 1 kg of defoamer, start stirring, set th...

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Abstract

The invention relates to a low-temperature heat-seal high-separating coating thin film. The low-temperature heat-seal high-separating coating thin film comprises a base material, an upper coating layer and a lower coating layer arranged on the upper and lower surfaces of the base material, an upper bottom glue layer arranged between the base material and the upper coating layer and a lower bottom glue layer arranged between the base material thin film and the lower coating layer, wherein the upper coating layer is an acrylic acid coating layer; the lower coating layer is a polyvinylidene chloride (short for PVDC as below) coating layer; the acrylic acid coating layer is a low-temperature heat-seal layer; the PVDC coating layer is a high-separating layer; and during sealing, the acrylic acid coating layer and the PVDC coating layer are sealed in a heating manner, namely sealed in a lapping manner from inside and outside, and the heat-seal strength can reach 3.6N / 15mm. The coating thin film has the advantages of low heat-seal temperature, high heat-seal strength and high separating performance, and is particularly suitable for packaging chewing gum and chocolates sensitive to temperature at high speed.

Description

technical field [0001] The invention relates to a low-temperature heat-sealed high-barrier coating film and a manufacturing method thereof, which are suitable for high-speed packaging of chewing gum and belong to the field of new polymer materials. Background technique [0002] Plastic film is widely used in commodity packaging. For bagged and wrapped plastic packaging, sealing strength is an important performance indicator. There are two common forms of sealing, a coating film coated with heat-sealing coating or a composite film made by compounding with heat-sealing film. Compared with composite films, coated films are more and more favored by customers for their light weight, good transparency, small film thickness and low cost. Currently, acrylic coatings, one of the main heat-sealing coating products on the market The heat-sealing strength of film can reach 3.0N / 15mm, and it is usually opened at 90°C, and the best heat-sealing value is reached at 110-120°C. This materia...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/08B32B27/18B32B37/14B32B38/16B65D65/40
Inventor 王恩飞
Owner HAINAN SHINER IND
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