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High barrier food package coated membrane latexes by thermal sealing at low temperature and preparation method

A food packaging and low-temperature heat-sealing technology, which is applied in packaging, wrapping paper, transportation and packaging, etc., can solve the problems of insufficient heat sealing and difficulty in fusion, and achieve the effect of extending shelf life and high barrier performance

Inactive Publication Date: 2009-02-04
HAINAN BNK WATER BASED NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the heat sealing temperature of the same plastic material is basically close to the melting point of the material, otherwise the fusion of the two will be difficult and the heat sealing effect will not be achieved

Method used

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  • High barrier food package coated membrane latexes by thermal sealing at low temperature and preparation method
  • High barrier food package coated membrane latexes by thermal sealing at low temperature and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] plan 1

[0020] Preparation: Add 0.02 parts of initiator A tert-butyl hydroperoxide to 8 kg of deionized water for later use;

[0021] 0.02 part of initiator B sodium formaldehyde sulfoxylate was added to 8kg of deionized water for subsequent use;

[0022] Kettle material: deionized water 82kg

[0023] Auxiliary 1 0.02kg

[0024] Auxiliary 2 0.002kg

[0025] Additive 3 0.04kg

[0026] Emulsifier: sodium paraffin sulfonate 1.4kg

[0027] Sodium lauryl sulfate 0.6kg

[0028] Mixed monomer vinylidene chloride 92.5kg

[0029] Acrylonitrile 7kg

[0030] Itaconic acid 0.5kg

[0031] Put the material into the 200-liter reactor, vacuum the nitrogen to replace it, and finally reduce the pressure of the reactor to -0.08~-0.095MPa, inhale the mixed monomer, cold disperse for half an hour, and when the temperature rises to 52°C, continue to add and configure. Initiator A tert-butyl hydroperoxide, initiator B sodium formaldehyde sulfoxylate, keep the tem...

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Abstract

The invention relates to a low-temperature heat-sealing high-barrier food packaging film coating latex. The composition points of the mixed monomer of the latex is that vinylidene chloride accounts for 80 to 93 percent of the total amount of the mixed monomer; methyl acrylate, methyl ethyl oxalate, methyl methacrylate, butyl ester, acrylonitrile or methacrylonitrile account for 2 to 10 percent of the total amount of the mixed monomer; itaconic acid, acrylic acid, methacrylic acid account for 0.5 to 5 percent of the total amount of the mixed monomer; the surfactants added are 0.7 portion of SAS and 0.3 portion of sodium dodecyl sulfate; the additive 3 is 0.01 portion of metallic salt. The preparation method includes the following steps: deionized water, surfactant and additive are added in a reactor; the reactor is vacuumized and the gas is replaced by nitrogen gas; the mixed monomer is added. The product of the invention has the advantages of low temperature heat sealing and high barrier performance, and the food using the product has longer shelf life.

Description

technical field [0001] The invention relates to a low-temperature heat-sealing high-barrier coating film latex for food packaging and a preparation method thereof. Background technique [0002] Latex is used in many products, some of which are used for architectural decoration coatings, and surface cleaning of food boxes in the catering industry. But so far, food packaging coating film latex with high barrier for heat sealing at low temperature has not been available on the market. Because the heat-sealing temperature of the same plastic material should be close to the melting point of the material, otherwise the fusion of the two will be difficult and the heat-sealing effect will not be achieved. Contents of the invention [0003] In order to overcome the above-mentioned deficiencies, the object of the present invention is to provide a method for preparing latex coating film for low-temperature heat-sealing and high-barrier food packaging, so that it can solve the techni...

Claims

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Application Information

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IPC IPC(8): C09D127/08C09D5/02C08F214/08B65D65/40
Inventor 葛飞雄方勇
Owner HAINAN BNK WATER BASED NEW MATERIAL CO LTD
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