Polyvinyl Alcohol Application

Polyvinyl Alcohol products have a wide range of uses. In the textile industry, they are mainly used as yarn pulp, fabric finishing...

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Polyvinyl Alcohol Grades

Polyvinyl Alcohol is manufactured by polymerization of vinyl acetate monomer, followed by hydrolysis of the polyvinyl acetate. HOP...

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Polyvinyl Alcohol Introduction

Polyvinyl Alcohol is a water soluble and biodegradable synthetic polymer. It is adry solid, and is available in granule and powder...

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  • Home >> Polyvinyl Alcohol(PVA) >> polyvinyl alcohol 0588,0599, 1388, 1488, 1499,2488, pva powder, 20mesh, 80mesh, 120mesh, all grades
polyvinyl alcohol 0588,0599, 1388, 1488,

PVA is usually processed in the form of aqueous solution. Since the solution is slightly acidic (pH 5~7), vessel

should be made of materials, which will not contaminate the solution with corrosive material or rusts. Stainless

steel vessel, enameled containers or polyester tanks are recommended.

The specific gravity of PVA is ranging from 1.26 to 1.31, which is heavier than that of water. Low agitation speed

or unfavorable agitating condition sometimes causes coarse particles to precipitate and to block the outlet of

the dissolving tank. Hence, a flush valve or tank valve is recommended to be installed in the bottom of the vessel to prevent the particles from blocking the discharge line.

PVA for Paper Industry

PVA HWF-17 is usually used as a surface treatment agent for paper and paperboard. When higher coverage is

required, HWF-05 or HWF-08 may be applied. A sizing solution of 2-5% is used, with a plasticizer for example glycerol, an insolubilizer for example glyoxal and defoamer added to the solution. A wax emulsion (10-50% of the

weight of PVA ) may be added to prevent sticking to the dryer and staining on the calendar roll. Metallic

stearates and rosins may also be applied.The applications of PVA for paper industry are listed as follows.

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