Film comprising a strippable sacrificial layer for reduction of surface defects in a substrate
AssigneeDuPont Teijin Films U.S. Limited Partnership
InventorsRobert Eveson, Karl Rakos, Damian Peter Tuffin, Dominic Hoy
Life of this patent
Estimating the term…
Abstract
A coextruded biaxially oriented composite film comprising a polyester substrate layer and disposed on one or both surfaces thereof a strippable sacrificial layer, wherein said strippable sacrificial layer comprises an ethylene-methacrylic acid (EMAA) copolymer.
Claims21
A coextruded biaxially oriented composite film comprising a polyethylene terephthalate (PET) substrate layer and disposed on one or both surfaces thereof an ethylene-methacrylic acid (EMAA) copolymer strippable sacrificial layer, wherein the strippable sacrificial layer has a thickness in the range of from 2 to 200 μm, and the EMAA copolymer has a melt flow index of 0.5 to about 50 g/10 min, and wherein the EMAA copolymer is not an ionomer and does not contain metal ions.
Dependencies are inferred from the claim text.