TEAR RESISTANT MULTILAYER FILMS BASED ON SEBACIC ACID COPOLYESTERS AND ARTICLES INCORPORATING SUCH FILMS

摘要

TEAR RESISTANT MULTILAYER FILMS BASED ON SEBACIC ACID COPOLYMERS AND ARTICLES INCORPORATING SUCH FILMS 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.