Method of forming and sizing glass fibers

Glass manufacturing – Processes – Forming product or preform from molten glass

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Details

106238, 427178, 4274346, 428288, C03C 2502

Patent

active

043057420

ABSTRACT:
A sizing composition and process are provided for producing wound packages and particularly precision wound packages of glass fiber strand and/or roving. The sizing composition has a total solids content in the range of about 9 to about 30 weight percent and comprises a phenolic epoxy resin, the reaction product of a partial ester of a polycarboxylic acid containing one or more unesterified carboxyl groups with a compound containing more than one epoxy group; and organo silane or silanes; a non-ionic surface active agent; a protective colloid; and a cationic lubricant. The process for producing the precision wound packages of glass fibers includes forming a plurality of glass fibers from molten glass, treating the glass fibers with the sizing composition having a total solids content of about 9 to about 30 weight percent, gathering the treated glass fibers together into one or more strands and collecting the gathered strand or strands on a winder in a precision wound package to produce glass fiber strands or roving.

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