Process for forming flat plate ballistic resistant materials
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United States of America Patent
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Apr 9, 1991
Grant Date -
N/A
app pub date -
Feb 2, 1989
filing date -
Feb 2, 1989
priority date (Note) -
Expired
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Abstract
A process for forming flat plate ballistic resistant composites which includes impregnating a low-alkali magnesia-aluminum-silicate glass fiber woven roving with an impregnating composition. The impregnating composition includes a resin solution of a polyester resin in a polymerizable monomeric solvent a free radical catalyst and optionally, a thickening agent and further optionally a flame retardant material. The impregnated woven roving is cured in a molding unit at a temperature of about 225.degree.-255.degree. F. for a sufficient period of time and at a sufficient pressure to allow the impregnated woven roving to substantially conform to the mold unit. The temperature and pressure used are sufficient to maintain the exothermic temperature at about 300.degree. F. or below and to catalytically crosslink the polyester resin and monomeric solvent.
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