Method of preparing particles of thermoplastic composition

Claim 1

A MRTHOD OF FORMING PARTICLES OF PLASTIC MIX, WHICH PARTICLES ARE BOTH COMPRESSIBLE AND COHESIVE, COMPRISING MIXING, IN RELATIVE PROPORTIONS, 100 PARTS BY WEIGHT OF POWDERED RESIN OBTAINED BY DISPERSION POLYMERIZATION, FROM 33 1/3%-66 2/3% BY WEIGHT OF SAID POWDERED RESIN CONSISTING OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF COPOLYMERS OF VINYL CHLORIDE AND VINYL ACETATE CONTAINING LESS TNA ABOUT 5% BY WEIGHT VINYL ACETATE, COPOLYMERS OF VINYL CHLORIDE AND VINYLIDENE CHLORIDE AND MIXTURES THEREOF AND FROM 66 2/3%-33 1/3% BY WEIGHT OF SAID POWDERED RESIN CONSISTING OF A MEMBER SELECTED FROM TGHE GROUP CONSISTING OF COPOLYMERS OF VINYL CHLORIDE AND VINYL ACETATE CONTAINING MORE THAN ABOUT 5% BY WEIGHT VINYL ACETATE AND MIXTURES THEREOF, FROM 20-50 PERTS BY WEIGHT OF LIQUID VINYL PLASTICIZER, AND FROM 0-150 PARTS BY WEIGHT OF INERT PIGMENT AND FILLER, SAID MIXING BEING DONE AT A TEMPERATURE LESS THAN ABOUT 130*F., TO FORM AGGLOMERATES OF UNFUSED RESIN, PLASTICIZER, PIGMENT, AND FILLER, CONSOLIDATING SAID AGGLOMERATES WITHOUT FUSING SAID RESIN COMPONENT AT A TEMPERATURE LESS THAN ABOUT 130*F. TO FORM A SHEET OF CONSOLIDATED MIX AND DISINTEGRATING SAID SHEET INTO PARTICLES OF A DESIRED DEGREE OF FINENESS WHILE MAINTAINING SAID PARTICLES AND SHEET AT A TEMPERATURE LESS THAN ABOUT 80*F.