FILMS AND FILM LAMINATES WITH RELATIVELY HIGH MACHINE DIRECTION MODULUS

摘要

Films and film laminates include a blend of polymers, the blend including an elastomeric block copolymer in an amount from about 51% to about 95% by weight of the blend; and a polystyrenic polymer in an amount from about 1% to about 25% of the weight of the blend, wherein the polystyrenic polymer is selected from the group consisting of polystyrenic homopolymers and polystyrenic random interpolymers. The films and laminates are elastic in the cross-direction and have a relatively high modulus, or stiffness, in the machine-direction.