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Preparation method of paper-plastic composite adhesive

A paper-plastic composite and adhesive technology, applied in the direction of adhesives, adhesive types, adhesive additives, etc., can solve the problems of many pores, rough paper surface, etc., and achieve the effect of simple operation, good hygienic performance, and convenient cleaning

Inactive Publication Date: 2021-03-26
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 2. The surface of the paper is rough and has many pores

Method used

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  • Preparation method of paper-plastic composite adhesive
  • Preparation method of paper-plastic composite adhesive
  • Preparation method of paper-plastic composite adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A preparation method of paper-plastic composite adhesive, comprising the following steps:

[0029] Step 1, preparation of emulsified rosin

[0030] (1) Add 120 grams of rosin to a three-necked flask, add 100 ml of alcohol, heat to 80°C until the rosin dissolves, add 6 grams of rosin emulsifier and 60 ml of 80°C hot water,

[0031] Stir vigorously for 30 minutes until milky white, and cool down to 70°C;

[0032] (2) Add 40 ml of 10wt% polyvinyl alcohol solution dropwise under strong stirring, finish dripping within 30 minutes, continue stirring for 30 minutes, cool down and discharge, the product is light yellow viscous liquid with a solid content of 42%, which is rosin viscosity-increasing emulsion ;

[0033] Step 2, emulsion synthesis and preparation of paper-plastic composite adhesive

[0034] (1) Pre-emulsification: Get 4 grams of emulsifier solution and put it into a three-necked flask, add 200 grams of mixed monomer dropwise for 1 hour under stirring, and obtain...

Embodiment 2

[0071] A preparation method of paper-plastic composite adhesive, comprising the following steps:

[0072] Step 1, preparation of emulsified rosin

[0073] (1) Add 110 grams of rosin to a three-necked flask, add 95 ml of alcohol, heat to 80°C until the rosin dissolves, add 5.5 grams of rosin emulsifier and 55 ml of 80°C hot water, stir vigorously for 30 minutes until milky white, and cool down to 70°C;

[0074] (2) Under strong stirring, add 35 milliliters of 10wt% polyvinyl alcohol solution dropwise, finish dripping within 30 minutes, continue stirring for 30 minutes, cool down and discharge, the product is a light yellow viscous liquid with a solid content of 32%, which is rosin thickening Lotion;

[0075] Step 2, emulsion synthesis and preparation of paper-plastic composite adhesive

[0076] (1) Pre-emulsification: Take 3.5 grams of emulsifier solution and put it into a three-necked flask, and drop the mixed monomer into the three-necked flask within 1 hour under stirring ...

Embodiment 3

[0083] A preparation method of paper-plastic composite adhesive, comprising the following steps:

[0084] Step 1, preparation of emulsified rosin

[0085] (1) Add 135 grams of rosin into a three-necked flask, add 105 ml of alcohol, heat to 80°C until the rosin dissolves, add 6.5 grams of rosin emulsifier and 65 ml of 80°C hot water, stir vigorously for 30 minutes until milky white, and cool down to 70°C;

[0086] (2) Under vigorous stirring, add 45 milliliters of 10wt% polyvinyl alcohol solution dropwise, finish dripping within 30 minutes, continue stirring for 30 minutes, cool down and discharge, the product is light yellow viscous liquid with a solid content of 45%, which is rosin thickening Lotion;

[0087] Step 2, emulsion synthesis and preparation of paper-plastic composite adhesive

[0088] (1) Pre-emulsification: Take 4.5 grams of emulsifier solution and put it into a three-necked flask, and drop the mixed monomer into the three-necked flask within 1 hour under stirri...

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Abstract

The invention relates to a preparation method of a paper-plastic composite adhesive. The preparation method comprises the following steps: 1. preparing rosin tackifying emulsion from emulsified rosin,2. synthesizing the emulsion and preparing the paper-plastic composite adhesive, putting an emulsifier solution into a three-necked flask, and adding a mixed monomer to react to obtain a stable pre-emulsified solution; adding the emulsifier solution, the ammonium persulfate initiator, the 10wt% sodium bicarbonate solution and the pre-emulsified solution into a three-neck flask, and reacting to obtain a seed emulsion; dropwise adding the pre-emulsified liquid and an ammonium persulfate initiator into the seed emulsion, keeping the temperature, cooling, adding a rosin tackifying emulsion, and stirring to obtain the paper-plastic composite adhesive. According to the invention, by changing the variety and composition of monomers, adding emulsified rosin into the polymer emulsion and selectingthe variety and dosage of the emulsifier, the dosage of the initiator, the polymerization temperature, the reaction time, the tackifying resin and other conditions, the obtained composite adhesive ishigh in bonding strength, good and stable in brightness, and good in stability and water resistance.

Description

technical field [0001] The invention relates to the preparation of an adhesive in the printing and packaging industry, in particular to a preparation method of a paper-plastic composite adhesive. Background technique [0002] At present, my country's flexible packaging printing industry is developing rapidly and has become an important pillar industry in my country's economic development. From the packaging of various commodities in supermarkets, we can know that all kinds of plastic flexible packaging with beautiful appearance have become the mainstream of commodity packaging. With the rapid development of flexible packaging, various functional materials are used more and more widely. At the same time, because the country vigorously advocates green environmental protection, many domestic enterprises have begun to focus on the development of environmentally friendly packaging materials. [0003] The paper-plastic composite packaging bag that appeared more than 10 years ago u...

Claims

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Application Information

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IPC IPC(8): C09J133/08C09J11/08C08F220/18C08F212/08C08F220/06
CPCC08L2205/03C09J11/08C09J133/064C08F220/1804C08F212/08C08F220/06C08L93/04C08L29/04
Inventor 吴宏京李林远
Owner XI AN JIAOTONG UNIV
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