发明名称 TUBE OR PIPE FORMED FROM A THERMOPLASTIC POWDER IMPREGNATED FIBERGLASS ROVING
摘要 <p>A thermoplastic impregnated fiberglass pipe or tube and the process for making such pipe are disclosed. The pipe or tube is made of thermoplastic impregnated fibrous roving which consists of a plurality of glass filaments, at least a portion of the filaments' surfaces being in contact with the residue produced by evaporating water from an aqueous size composition consisting of an organosilane coupling agent, a polyethylene oxide binder material, and a polypropylene thermoplastic polymer resin, wherein the composition is applied to the glass fiber during the fiber forming process. The pipe forming process includes filament winding the rovings around a spindle and thereafter heating the wound rovings to fuse the thermoplastic polymer resin.</p>
申请公布号 WO1992018559(A1) 申请公布日期 1992.10.29
申请号 US1991002502 申请日期 1991.04.16
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