Patent ID: 9416268
Filing Date: 2016-08-16
CPC Classification: B32B,C08J,C08L,Y10T

Claim Text:
1. A shrinkable film, comprising: a uniaxially stretched biodegradable film containing a polylactic acid resin in an amount of 10-99 wt % based on the total amount of the uniaxially stretched biodegradable film and a polylactone or polybutylene succinate in an amount of 1-90 wt % based on the total amount of the uniaxially stretched biodegradable film; a polyurethane coating layer formed by coating a water-dispersed polyurethane coating composition containing a silicon-based wetting agent on one surface of the biodegradable film; and a metal deposition layer formed on the polyurethane coating layer, wherein the uniaxially stretched biodegradable film has a shrinkage ratio of 36-60% in the transverse direction at the time of shrinkage in a water bath at 90° C. for 10 seconds.