Patent ID: 8349429

Claim:
An opaque, polymeric film structure for producing labels that are removable, comprising: (a) a core layer that has a first side and a second side, wherein the core layer comprises an isotactic polypropylene; (b) a first skin layer that has a first side and a second side, wherein the first skin layer comprises polylactic acid polymer (PLA); (c) a second skin layer that has a first side and a second side, wherein the second skin layer comprises a film-forming thermoplastic polymer; (d) a first tie layer that has a first side and a second side, wherein the first tie layer comprises a film-forming thermoplastic polymer, the first side of the first tie layer is adjacent to the second side of the first skin layer, and the second side of the first tie layer is adjacent to the first side of the core layer; (e) a second tie layer that has a first side and a second side, wherein the second tie layer comprises a film-forming thermoplastic polymer, the first side of the second tie layer is adjacent to the second side of the core layer, and the second side of the second tie layer is adjacent to the first side of the second skin layer; wherein one or more layers of the film structure (i) comprise a cavitating agent and are cavitated and/or (ii) comprise an opacifying agent; and wherein the film has a thickness within the range of from about 0.5 mils to about 8 mils.