초록 ▼

A process is described for improving needling efficiency in the preparation of continuous fiber glass strand needled mat involving subjecting the continuous glass strand mat to environmental treatments before and during needling to control mat moisture and temperatures. A low relative humidity and w

A process is described for improving needling efficiency in the preparation of continuous fiber glass strand needled mat involving subjecting the continuous glass strand mat to environmental treatments before and during needling to control mat moisture and temperatures. A low relative humidity and warm temperature environment is maintained during needling and the mat is exposed to similar treatment prior to needling.

대표청구항 ▼

In a method of improving the operation of a needling zone by minimizing process interruption for cleaning wherein continuous strand fiber glass mat is being mechanically bonded by penetrating the mat with barbed needles to entangle the strands and wherein the mat contains moisture at a level of betw

In a method of improving the operation of a needling zone by minimizing process interruption for cleaning wherein continuous strand fiber glass mat is being mechanically bonded by penetrating the mat with barbed needles to entangle the strands and wherein the mat contains moisture at a level of between 0.5 to 1 percent the improvement comprising introducing air into the zone of needing in sufficient quantities to establish in said zone an atmosphere which is at a temperature of 50°F. to 120°F. and a relative humidity of between 20 percent and 60 percent to thereby prevent fouling of the needling zone with glass fibers and binder.