Patent ID: 8399079

Claim:
A thermoformable sheet having a thickness of at least 300 μm, the thermoformable sheet comprising a blend of: (A) from 10 to 15% by weight of a propylene-ethylene copolymer having substantially isotactic propylene sequences having an isotactic triad (mm) measured by 13 C NMR of greater than 0.85 and comprising: (1) at least 70% by weight units derived from propylene and from about 10 to 16% by weight units derived from ethylene; (2) the propylene-ethylene copolymer having a melt flow rate from 4 to 30 grams/10 minutes and a heat of fusion from 1 to 50 Joules/gram; and (B) from 80 to about 95% by weight of a high crystallinity polypropylene homopolymer or high crystallinity propylene-based copolymer having up to 1% by weight of units derived from an α-olefin comonomer, having a melt flow rate of from 2 to 8 grams/10 minutes and xylene solubles less than 2% by weight, wherein, the melt flow rate of the blend is from 2 to 7 grams/10 minutes and the blend exhibits: (1) room temperature (23° C.) Charpy toughness of at least 9 KJ/m 2 ; (2) flexural modulus of at least 1300 MPa; (3) 0° Charpy toughness of at least 2 KJ/m 2 ; and (4) a value for haze of less than 40%.