Food packaging adhesive and preparation method thereof,

A food packaging and adhesive technology, applied in the direction of monocarboxylic acid ester copolymer adhesive, adhesive type, ester copolymer adhesive, etc., can solve the problems of complex preparation process, low adhesive strength and high preparation cost , to achieve the effects of low preparation cost, fast bonding speed, and easy use.

Inactive Publication Date: 2016-10-26
FOSHAN CITY YONGHENGDA NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide an adhesive for food packaging and a preparation method thereof, aiming at solving the problems of low adhesive strength, poor stability and high preparation cost of existing food packaging adhesives. , complex preparation process and other issues

Method used

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  • Food packaging adhesive and preparation method thereof,

Examples

Experimental program
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Effect test

Embodiment 1

[0047] In parts by weight, add 450 parts of deionized water and 30 parts of polyvinyl alcohol into the reactor successively, heat up and stir, and after the polyvinyl alcohol is completely dissolved, cool down to 80°C; Add 100 parts of butyl ester and 100 parts of methyl methacrylate into the drop tank and mix evenly to obtain mixed monomers; under stirring conditions, add 5 parts of γ-aminopropyltriethoxysilane, NP 8 parts of -40, 8 parts of OP-10, 6 parts of ethylenediaminetetraacetic acid disodium salt and 2 parts of silicone oil, after the dispersion is uniform, start to drop the mixed monomer, and add dropwise 0.15wt% of the total amount of the mixed monomer The mass fraction of ammonium persulfate solution is 0.3% ammonium persulfate aqueous solution, and the dropwise addition is completed within 4 hours; after the dropwise addition, the temperature is raised to 90°C for aging for 50 minutes, and then the temperature is lowered to 40°C, and 2 parts of Kasone are added, st...

Embodiment 2

[0049] In parts by weight, sequentially add 450 parts of deionized water and 50 parts of polyvinyl alcohol into the reactor, heat up and stir, and after the polyvinyl alcohol is completely dissolved, cool down to 80°C; Add 80 parts of butyl ester and 120 parts of methyl methacrylate into the drip tank and mix evenly to obtain mixed monomers; under stirring conditions, add γ-(methacryloyloxy)propyl trimethoxy 8 parts of base silane, 15 parts of NP-40, 15 parts of OP-10, 3 parts of tetrasodium edetate and 2 parts of silicone oil. The mass fraction of 0.15wt% is 0.5% potassium persulfate aqueous solution, and the dropwise addition is completed within 3 hours; after the dropwise addition is completed, the temperature is raised to 95 ° C for 60 min, and then the temperature is lowered to 45 ° C, and 5 parts of Casson are added, stirred and mixed After uniformity, the material is discharged, filtered and packaged to obtain the finished product.

Embodiment 3

[0051]In parts by weight, sequentially add 500 parts of deionized water and 15 parts of polyvinyl alcohol into the reactor, heat up and stir, and after the polyvinyl alcohol is completely dissolved, cool down to 75°C; Add 80 parts of butyl ester and 120 parts of methyl methacrylate into the dripping tank and mix evenly to obtain mixed monomers; under stirring conditions, add 2 parts of vinyltrimethoxysilane and 3 parts of NP-40 in sequence into the above reactor , 3 parts of OP-10, 8 parts of trisodium hydroxyethyl ethylenediamine triacetate and 2 parts of silicone oil, after the dispersion is uniform, start to drop the mixed monomer, and drop the mass of 0.2wt% of the total amount of the mixed monomer The fraction is 0.1% potassium persulfate aqueous solution, and the dropwise addition is completed within 3 hours; after the dropwise addition, the temperature is raised to 85°C for aging for 40 minutes, and then the temperature is lowered to 35°C, and 2 parts of Casson are added...

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Abstract

The invention discloses a food packaging adhesive and a preparation method thereof, wherein the food packaging adhesive comprises, by weight, 400-500 parts of deionized water, 15-50 parts of polyvinyl alcohol, 120-300 parts of vinyl acetate, 80-150 parts of butyl acrylate, 80-120 parts of methyl methacrylate, 2-8 parts of a silane coupling agent, 3-15 parts of an anionic emulsifier, 3-12 parts of a nonionic emulsifier, 3-8 parts of a sodium salt chelating agent, 2 parts of a defoamer, an initiator having the amount of 0.1-0.2 wt% of the total amount of the monomer, and 0-5 parts of a preservative, wherein the sodium salt chelating agent is one selected from ethylenediaminetetraacetic acid disodium salt, ethylenediaminetetraacetic acid tetrasodium salt, and hydroxyethyl ethylenediamine triacetic acid trisodium salt. According to the present invention, the food packaging adhesive has characteristics of high adhesion strength and good stability, has advantages of rapid adhesion, simple use method, easily-available raw materials and low preparation cost, and is the environmental protection and convenient use food packaging adhesive.

Description

technical field [0001] The invention relates to the field of adhesives, in particular to an adhesive for food packaging and a preparation method thereof. Background technique [0002] Food flexible packaging plastic-plastic composite packaging materials mainly adopt the dry laminating method, that is, apply a laminating meter to coat a layer of adhesive on the plastic film, and then go through a drying tunnel to remove the solvent or moisture in the adhesive, and then carry out hot pressing. combine. There are two main types of adhesives on the market: solvent-based and water-emulsion-based. Solvent-based laminating adhesives have a serious impact on human health and the environment, and are not convenient for storage and transportation, and are facing elimination. The water-based adhesive uses water as the dispersion medium, has low cost, and has no residual solvent, which meets the environmental protection and packaging material safety and hygiene standards. At present,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J131/04C09J133/12C09J133/08C09J11/06C09J11/08C08F218/08C08F220/18C08F220/14
CPCC08F218/08C08F220/14C08F220/18C08F220/1804C08L2205/03C09J11/06C09J11/08C09J131/04C09J133/08C09J133/12C08L83/04C08L29/04C08K5/17
Inventor 陈见玲
Owner FOSHAN CITY YONGHENGDA NEW MATERIAL TECH CO LTD
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