Water-emulsion type paper-plastic composite adhesive and method for preparing same

A paper-plastic compounding and adhesive technology, used in adhesives, rosin adhesives, etc., can solve the problems of flammability of solvents, environmental pollution, and poisoning of users' personal health, etc., and achieve the effect of good moisture resistance and high bonding strength.

Inactive Publication Date: 2009-01-07
SOUTH CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the volatilization of a large amount of solvents during use, it not only seriously deteriorates the production environment, poisons the personal health of users, but also causes serious environmental pollut

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] This embodiment provides a water-emulsion type paper-plastic composite adhesive, which is a water-emulsion type adhesive based on SBS and EVA resin, and the adhesive includes the following components in parts by mass:

[0035] 2-8 parts of SBS resin

[0036] EVA resin 2~8 parts

[0037] Mixed solvent 2~12 parts

[0038] Tackifying resin 15~25 parts

[0039] 1-2.5 parts of polyvinyl alcohol

[0040] Compound emulsifier 1~3 parts

[0041] 20-30 parts of water

[0042] During the preparation, the SBS resin, EVA resin, mixed solvent and tackifying resin in the above components are co-dissolved and then emulsified through the aqueous phase solution prepared by the composite emulsifier, water and polyvinyl alcohol to obtain a viscosity of 500-2500mPa.s, Emulsion adhesive with water absorption <0.6%.

[0043] The SBS resin in the above adhesive can use the resin model as SBS791 # 、SBS792 # 、SBS796 # 、SBS1102 # 、SBS1105 # 、SBS1106 # 、SBS1126 # 、SBS801 # 、SBS805 #...

Embodiment 2

[0054] Add SBS792 to the reactor # 3kg, EVA920 # 2kg, EVA3185 # Add 2kg of toluene and 2kg of ethyl acetate to 1kg of mixed resin, swell at room temperature for 1 hour and heat to 45-55°C to fully dissolve the mixed resin, stir for 10-15 minutes to mix the two resins evenly; add 19kg of rosin and 1kg of terpene resin , heated and stirred to dissolve under the above temperature conditions to form a uniform oil phase solution system. Dissolve 1.2kg of polyvinyl alcohol into 20kg of 80°C hot water, lower the temperature to 45-55°C, add 1.2kg of emulsifier DNS-86, and stir evenly to obtain a uniform aqueous solution system. Add the water phase solution dropwise to the oil phase solution at a speed of 150-180D / min, control the stirring speed to 3000-4000r / min, the emulsion starts to turn white, the viscosity drops, and a water-dispersible emulsion is formed, and continue to stir for 20-40min. Then cool rapidly, cool down and discharge. The obtained water-emulsion adhesive based...

Embodiment 3

[0056] Add SBS1102 to the reactor # 2kg, 801 # 1kg, EVA920 # 2kg, 3185 # Add 2kg of toluene and 2kg of cyclohexane to 1kg of mixed resin, swell at room temperature for 1 hour and heat to 45-55°C to fully dissolve the mixed resin, stir for 10-15 minutes to mix the two resins evenly; add 18kg of rosin and 2kg of terpene resin , heated and stirred at the above temperature to dissolve, forming a uniform oil phase solution. Dissolve 1.0kg of polyvinyl alcohol into 20kg of 80°C hot water, cool down to 45-55°C, add 1.0kg of emulsifier DNS-86, 0.6kg of A-102, and stir to obtain a uniform aqueous phase solution. Add the water phase solution dropwise to the oil phase solution at a speed of 120-160D / min, and control the stirring speed to 3000-4000r / min, the emulsion starts to turn white, the viscosity drops, and a water-dispersible emulsion is formed, and the stirring is continued for 20-40min. Then cool rapidly, cool down and discharge. The resulting water-emulsion adhesive based o...

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Abstract

The invention discloses a water emulsion paper plastic composite adhesive which comprises the compositions with the weight portions of 2-8 portions of SBS resin, 2-8 portions of EVA resin, 2-12 portions of mixed solvent, 15-25 portions of tackifying resin, 1-25 portions of polyvinyl alcohol, 1-3 portions of composite emulsifier and 20-30 portions of water. After the mutual solution of the SBS resin, the EVA resin, the mixed solvent and the tackifying resin in the compositions and the emulsification of water phase solution prepared from the composite emulsifier, water and the polyvinyl alcohol, the latex adhesive with the viscosity of 500-2500MPa.s and less than 0.6 percent of the water absorption rate is obtained. The adhesive takes water as dispersing medium and has the characteristics of environmental friendly performance of water emulsion laminating adhesive, transporting and storing safety, high adhering strength and good humidity resistance of solvent laminating adhesive, etc. The deficiencies of present solvent laminating adhesive and acrylic water emulsion laminating adhesive are solved.

Description

technical field [0001] The invention relates to a preparation technology of an adhesive, in particular to a water-emulsion type paper-plastic composite adhesive suitable for paper-plastic lamination and a preparation method thereof, belonging to the field of chemical products. Background technique [0002] Paper-plastic composite has the properties of moisture-proof, anti-fouling, folding resistance, wear resistance, etc. It can better protect paper products, enhance the safety of its use, and prolong its service life. The field of packaging paper bags and cartons has been widely used and has become the first choice for modern paper packaging. [0003] At present, paper-plastic laminating glue can be divided into hot melt type, water emulsion type and solvent type. Hot-melt laminating adhesives do not contain solvents, are pollution-free, do not need to be heated and solidified, have no drying process, and are mostly solid, which is convenient for packaging and transportati...

Claims

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Application Information

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IPC IPC(8): C09J193/04C09J153/02C09J123/08
Inventor 石光陈红雨
Owner SOUTH CHINA NORMAL UNIVERSITY
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