Process for producing a plastic casing reinforced against tensile force

摘要

PCT No. PCT/DE91/00492 Sec. 371 Date Dec. 23, 1992 Sec. 102(e) Date Dec. 23, 1992 PCT Filed Jun. 7, 1991 PCT Pub. No. WO92/00180 PCT Pub. Date Jan. 9, 1992.A process for forming a plastic casing having reinforcing elements to resist tensile forces by simultaneously extruding the plastic casing and the reinforcing elements which are in a molten form and then twisting the extruded casing and elements to impart a helical configuration to the elements.