Patent ID: 8268420
Filing Date: 2012-09-18
Classification: B29C,B29K,Y10T

Abstract:
1. A wrap film made of a polyvinylidene chloride-based resin prepared by melt-extruding a polyvinylidene chloride-based resin from a die in tubular form, cooling the outer side of the extrudate with a coolant while an aqueous solution of a liquid that is compatible with water and forms one-component is retained in the hollow portion of the extrudate, and inflating the solidified extrudate, wherein the wrap film has the liquid that is compatible with water and forms one-component in applied state in amounts of 50 to 4,000 ppm, wherein the liquid that is compatible with water and forms one-component is one or more propylene glycol multimers selected from the group consisting of dipropylene glycol, tripropylene glycol, and polypropylene glycol having a weight-average molecular weight of 350 to 450.