US Patent:
20090311544, Dec 17, 2009
Inventors:
Mark S. LEE - North Kingstown RI, US
Harold Egon KOEHN - North Kingstown RI, US
Takeshi MIZUMURA - East Greenwich RI, US
Keunsuk P. CHANG - North Kingstown RI, US
Assignee:
TORAY PLASTICS (AMERICA), INC. - N. Kingstown RI
International Classification:
B32B 27/36
C08K 3/34
C08K 3/26
C08G 63/06
B29C 47/06
B32B 15/08
US Classification:
428458, 524599, 428480, 524444, 524450, 524425, 524451, 525450, 26417316
Abstract:
A biaxially oriented laminate film including a core layer including a blend of crystalline polylactic acid polymer and an inorganic antiblock particle which is biaxially oriented at low transverse direction orientation temperatures to impart a degree of cavitation around the particles such that a matte or opaque appearance is obtained. The laminate film may further have additional layers such as a heat sealable layer disposed on one side of the core layer including an amorphous polylactic acid resin and/or a polylactic acid resin-containing layer disposed on the side of the core layer opposite the heat sealable layer, a metal layer, or combinations thereof.