PROCESS FOR PRODUCTION OF POLYAMIDE RESIN PELLETS FOR THE PRODUCTION OF FILMS AND POLYAMIDE RESIN FILMS PRODUCED BY USING THE SAME

摘要

A process for the production of polyamide resin pellets for the production of films, characterized by extruding a polyamide resin obtained by melt polycondensation into strands, cooling and solidifying the strands, cutting them with a rotary cutter into pellets, and separating fines from the pellets to lower the fines content of the pellets to 20ppm by weight or below. The polyamide resin of the invention can give polyamide resin films which are suppressed in the occurrence of fishing eyes and thereby improved in surface appearance without adding a compound and without impairing the heat resistance, slipperiness, or transparency and which have higher commercial value. The polyamide resin is expected to bring about higher productivity in producing films by a recent molding process involving a high flow rate, a high extruder rate, and an extruder cylinder temperature exceeding 250°C, thus having great industrial value.