Making continuous fibers from a normally crystalline polymer latex

Claim 1

IN A METHOD FOR MAKING STRONG FIBERS FROM AN AQUEOUS DISPERSION OF AN UPPLASTICIZED, NORMALLY CRYSTALLINE POLYMERIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF VINYLIDENE CHLOROIDE, VINYKINDENE BROMIDE, VINYLIDENE CYANIDE, VINYLIDENE CHLOROBROMIDE, VINYLIDENE CHLOROCYANDIDE, VINYLIDENE BROMOCYANDIDE, COPOLYMERS THEREOF WITH ONE ANOTHER, AND COPOLYMERS THEREOF WITH MINOR AMOUNTS OF ANOTHER MONOETHYLENICALLY UNSATURATED POLYMERIZABLE COMPOUND WHICH DISPERSION IS MADE BY THE EMULSION POLYMERIZATION OF THE CORRESPONDING MONOMERS, AND IS ONE IN WHICH THE POLYMERIC PARTICLES ARE TEMPORARILY AMORPHOUS AND NON-CRYSTALLINE WHEN FIRST FORMED, THE STEPS WHICH CONSIST IN: DEPOSITING A THIN AND NARROW LINEAR STREAM OF SUCH A DISPERSION IN WHICH THE DISPERSED POLYMERIC PARTICLES ARE SUBSTANTIALLY ALL UNDER 1000 A. IN DIAMETER AND WHILE A SUBSTANTIAL PROPORTION OF THE POLYMERIC MATERIAL THEREIN IS STILL NON-CRYSTALLINE, ON A SMOOTH, NON-ABSORPTIVE SURFACE; DRYING THE FILAMENTARY DEPOSIT; STRIPPING THE FILAMENTARY DEPOSIT FROM THE SMOOTH SURFACE; HEATING THE FILAMENTARY PRODUCT TO A FUSION TEMPERATURE FOR A TIME INSUFFICIENT TO CAUSE DECOMPOSITION; CHILLING THE FUSED FILAMENT TO SUPERCOOL IT; AND, STRETCHING THE SUPERCOOLED FILAMENT TO EFFECT ORIENTATION AND CRYSTALLIZATION.