WRAP FILM MADE OF POLYVINYLIDENE CHLORIDE-BASED RESIN AND PROCESS FOR PRODUCING THE SAME

摘要

A wrap film that realizes stabilization of sock while allowing a sock sol ution to retain lubricating effects as an opening agent, inhibitions of pari son width fluctuation and meandering leading to avoidance of parison crease and exhibition of highly stable properties. There is provided a polyvinylide ne chloride resin wrap film produced by a process comprising melt extrusion of a polyvinylidene chloride resin into a tubular form through a die; coolin g the outside of the extrudate by a refrigerant while causing the hollow of the extrudate to hold an aqueous solution of liquid being miscible with wate r into one liquid; and thereafter inflating the thus solidified extrudate, w herein the concentration of the liquid being miscible with water into one li quid in the aqueous solution is in the range of 80 to 95 mass% so that the p olyvinylidene chloride resin wrap film is coated with this liquid in an amou nt of 50 to 4000 ppm.