Tear resistant multilayer films based on sebacic acid copolyesters and articles incorporating such films

摘要

A tear resistant film comprises at least three layers situated one on the other in a parallel array. The layers are individually selected from a stiff polyester or copolyester, a ductile sebacic acid based copolyester, and optionally, an intermediate material. Tear resistance may be measured in a Graves area test and reflects the ability of the film to absorb energy. The films of the invention are useful in may articles including security control laminates for glazing members.