FREMGANGSMAATE FOR INNVENDIG AA FORSTERKE PAPIR, PAPP OG ANDRE FIBERBASERTE PRODUKTER

FREMGANGSMAATE FOR INNVENDIG AA FORSTERKE PAPIR, PAPP OG ANDRE FIBERBASERTE PRODUKTER

A particular grade of polyvinyl alcohol which is super-hydrolyzed and which is substantially insoluble in water maintained at 130 DEG F (54 DEG C) is used as a wet-end additive. In addition, the polyvinyl alcohol particles have an extremely high hydrated bulk volume so that they form a highly stable...

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1. Verfasser: WHITE, BEVERLY M
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IMPREGNATING OR COATING OF PAPER
PAPER NOT OTHERWISE PROVIDED FOR
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PRODUCTION OF CELLULOSE
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creator WHITE, BEVERLY M
description A particular grade of polyvinyl alcohol which is super-hydrolyzed and which is substantially insoluble in water maintained at 130 DEG F (54 DEG C) is used as a wet-end additive. In addition, the polyvinyl alcohol particles have an extremely high hydrated bulk volume so that they form a highly stable suspension in water and which aids in achieving high retention of the particles in the web of the resulting product. The products formed by the method as described exhibit substantial improvements in strength properties. The addition of the polyvinyl alcohol in slurry form can be accomplished at or prior to the first or second fan pump.
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subjects IMPREGNATING OR COATING OF PAPER
PAPER NOT OTHERWISE PROVIDED FOR
PAPER-MAKING
PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D
PRODUCTION OF CELLULOSE
PULP COMPOSITIONS
TEXTILES
TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G
title FREMGANGSMAATE FOR INNVENDIG AA FORSTERKE PAPIR, PAPP OG ANDRE FIBERBASERTE PRODUKTER
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