Impregnation of yarns
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United States of America Patent
Stats
-
Jun 30, 1981
Grant Date -
N/A
app pub date -
Oct 29, 1979
filing date -
Nov 4, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A process for the treatment of glass yarn in which the yarn is impregnated with a low viscosity solution of a thermosetting binder in an organic solvent, the viscosity of said solution being not greater than 50 centipoise (=0.05 Pascal seconds) at 25.degree. C.; solvent is then evaporated from the impregnated yarn; the yarn is further impregnated with a high viscosity solution of a thermosetting binder in an organic solvent; and solvent is again evaporated from the impregnated yarn. The process improves the properties of the glass yarn when used in the manufacture of glass reinforced composites.
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