| 摘要 |
This invention relates to a film or sheet and a process to make a film or sheet, said film or sheet having a thickness of from 0.5 to 35 mils (12.7 to 889 microns) comprising a blend composition comprising: a) 4 to 50 wt %, based upon the weight of the composition, of one or more polypropylene-based TPO(s) comprising at least 50 wt % propylene and at least 10 wt % ethylene having a melt flow rate (MFR) of 7 dg/min or less, a Tm of 150° C. or more, and a lowest Tg of −30° C. or less; and b) 30 to 80 wt %, based upon the weight of the composition, of one or more ethylene plastomer(s) having a melt index of 3 dg/min or less and a density of 0.869 to 0.910 g/cc; and c) 0.5 to 35 wt %, based upon the weight of the composition, of one or more non-functionalized plasticizer(s) having a kinematic viscosity at 100° C. of 4 to 300 cSt, a pour point of −20° C. or less, and a flash point of 200° C. or more; and d) 0 to 69.5 wt %, based upon the weight of the composition, of one or more filler(s); and based upon the weight of the composition, and said blend composition having: i) a tensile strength of 7 MPa or more, and ii) an elongation at break in the machine and transverse directions of 400% or more, and iii) a flexural modulus of 50 MPa or less, and iv) Vicat softening point of 50° C. or more, and v) a highest Tm of 145° C. or more, and vi) a Roll Change Point of 5 to less than 29 mils (127 to 737 microns); and wherein the blend composition is calendered into a film or sheet having a thickness of 0.5 to 35 mils (12.7 to 889 microns).
|
