| 主权项 |
1. A label, the label comprising:
(a) a film having a first surface and a second surface and comprising a first film layer; and (b) a pressure sensitive adhesive layer having a first surface and a second surface and comprising an adhesive wherein the first surface of the adhesive layer is adhered to the second surface of the film; wherein the first film layer comprises at least one thermoplastic polymer, wherein the first film layer has a tensile modulus (ASTM D882) in a machine direction or a transverse direction of at least 900 MPa after immersion in water at a temperature of about 80° C. for at least about 3 minutes, and the first film layer has an absolute areal dimensional change (ASTM D1204) of less than 5.0% after immersion in water at a temperature of about 80° C. for at least about 3 minutes, wherein the thermoplastic polymer of the first film layer comprises a polymer selected from the group consisting of a (meth)acrylate polymer, a styrene polymer, a halogen-containing polymer, a polycarbonate, a polyacrylonitrile, an aromatic polyether, an aromatic polyimide, an aromatic polyamide-imide, and a mixture of two or more of any of the foregoing polymers, wherein the pressure sensitive adhesive exhibits at least one of a decrease in adhesion strength at temperatures above a room or ambient temperature, a decrease in adhesion strength on contact with an aqueous caustic solution, and combinations thereof, wherein the label has an opacity of 12% or less, and wherein the first film layer is nonoriented. |
