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A kind of natural rubber packaging adhesive and preparation method thereof

A natural rubber and adhesive technology, applied in the direction of natural rubber adhesives, adhesives, monocarboxylate copolymer adhesives, etc., can solve the problems of emulsion damage, low bonding strength, moisture absorption, etc., to achieve safe use, The effect of widespread promotion and application of value

Inactive Publication Date: 2016-04-13
珠海地球胶粘科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some adhesives will release free formaldehyde in the process of production and application, which is seriously harmful to the human body and the environment; some adhesives have poor water resistance and moisture resistance, are easy to absorb moisture in humid air, and have low bonding strength; Creep phenomenon occurs, which reduces the bonding strength, and it is easy to freeze when stored below -5°C, which damages the emulsion, thus greatly limiting its application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0010] A natural rubber packaging adhesive, made of the following raw materials in parts by weight (kg): natural rubber emulsion 5, carboxymethyl cellulose 4, sodium metasilicate 5, titanium dioxide 4, sodium hexametaphosphate 7, water-based hydroxyl polyurethane 5. Pure acrylic emulsion 8, tetrasodium EDTA 2, alum powder 2, potassium persulfate 2, polyvinyl acetate emulsion 5, morpholine 1, water 100-120.

[0011] The preparation method of described natural rubber packaging adhesive comprises the following steps:

[0012] (1) Add alum powder, titanium dioxide, sodium metasilicate, and sodium hexametaphosphate into water, heat to 80-90°C, dissolve, then add carboxymethyl cellulose, water-based hydroxyl polyurethane, morpholine and potassium persulfate , stirring and reacting for 2-3 hours;

[0013] (2) Mix other remaining materials and stir for 15-20 minutes;

[0014] (3) Mix the materials in steps (1) and (2), heat to 60-65°C, stir and react for 2-3 hours to obtain the prod...

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PUM

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Abstract

The invention provides a natural rubber packing adhesive. The natural rubber packing adhesive is characterized by being prepared from the following raw materials in parts by weight: 5-6 parts of natural rubber latex, 3-4 parts of carboxymethyl cellulose, 5-7 parts of sodium metasilicate, 3-4 parts of titanium dioxide, 5-7 parts of sodium hexametaphosphate, 4-5 parts of waterborne polyurethane hydroxyl, 8-10 parts of pure acrylic emulsion, 2-3 parts of EDTA tetrasodium, 2-3 parts of sodium alum powder, 1-2 parts of potassium persulfate, 5-6 parts of polyvinyl acetate emulsion, 1-2 parts of morpholine and 100-120 parts of water. The natural rubber packing adhesive utilizes the natural rubber latex as the main raw material, thereby being non-toxic, environmentally-friendly, safe to use and capable of effectively solving all defects of the current carton packing adhesives, such as low strength, poor water resistance, and the like, so that the natural rubber packing adhesive has extensive popularization and application values.

Description

technical field [0001] The invention relates to a chemical material, more specifically to an adhesive. Background technique [0002] At present, there are many kinds of adhesives used in cartons, such as trialdehyde glue and white latex. Some adhesives will release free formaldehyde in the process of production and application, which is seriously harmful to the human body and the environment; some adhesives have poor water resistance and moisture resistance, are easy to absorb moisture in humid air, and have low bonding strength; Creep phenomenon occurs, which reduces the bonding strength, and it is easy to freeze when stored below -5°C, which damages the emulsion, thus greatly limiting its application. It is necessary to develop new adhesives with high bonding strength, safety, environmental protection and good stability. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a natural rubber ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J107/02C09J133/04C09J131/04C09J11/04
Inventor 毕全中
Owner 珠海地球胶粘科技有限公司