SLUSH MOLDABLE OLEFIN COMPOSITION
A slush moldable composition includes a low density polyethylene resin, propylene-ethylene copolymer, olefin block copolymer, a thermoplastic olefin and silicon oil combination, and an optional pigment. A method for forming a instrument panel skin from the slush moldable composition is provided.
1 . A polyolefin-based composition for slush molding applications, the polyolefin-based composition comprising:
a low density polyethylene resin; and
a propylene-ethylene copolymer.
2 . The polyolefin-based composition of claim 1 further comprising an olefin block copolymer.
3 . The polyolefin-based composition of claim 1 wherein the olefin block copolymer is present in an amount from about 1 to about 25% of the total weight of the polyolefin-based composition.
4 . The polyolefin-based composition of claim 1 further comprising a thermoplastic olefin and silicon oil combination.
5 . The polyolefin-based composition of claim 1 wherein the thermoplastic olefin and silicon oil combination is present in an amount from about 1 to about 25% of the total weight of the polyolefin-based composition.
6 . The polyolefin-based composition of claim 1 further comprising a pigment.
7 . The polyolefin-based composition of claim 1 wherein the thermoplastic olefin and silicon oil combination is present in an amount from about 60 to about 99% of the total weight of the polyolefin-based composition.
8 . The polyolefin-based composition of claim 1 wherein the thermoplastic olefin and silicon oil combination low density polyethylene resin is present in an amount from about 70 to about 90% of the total weight of the polyolefin-based composition.
9 . The polyolefin-based composition of claim 1 wherein the propylene-ethylene copolymer is present in an amount from about 1 to about 25% of the total weight of the polyolefin-based composition.
10 . The polyolefin-based composition of claim 1 wherein the low density polyethylene resin has a density less than 0.95 g/ml.
11 . A polyolefin-based composition for slush molding applications, the polyolefin-based composition comprising:
low density polyethylene resin;
propylene-ethylene copolymer;
an olefin block copolymer; and
a thermoplastic olefin and silicon oil combination.
12 . The polyolefin-based composition of claim 11 wherein the olefin block copolymer is present in an amount from about 1 to about 25% of the total weight of the polyolefin-based composition.
13 . The polyolefin-based composition of claim 11 wherein the thermoplastic olefin and silicon oil combination is present in an amount from about 1 to about 25% of the total weight of the polyolefin-based composition.
14 . The polyolefin-based composition of claim 11 wherein the thermoplastic olefin and silicon oil combination is present in an amount from about 60 to about 99% of the total weight of the polyolefin-based composition.
15 . The polyolefin-based composition of claim 11 wherein the thermoplastic olefin and silicon oil combination low density polyethylene resin is present in an amount from about 70 to about 90% of the total weight of the polyolefin-based composition.
16 . The polyolefin-based composition of claim 11 wherein the propylene-ethylene copolymer is present in an amount from about 1 to about 25% of the total weight of the polyolefin-based composition.
17 . The polyolefin-based composition of claim 11 wherein the low density polyethylene resin has a density less than 0.95 g/ml.
18 . A method of forming a instrument panel skin, the method comprising:
a) introducing a polyolefin-based composition comprising:
low density polyethylene resin; and
a propylene-ethylene copolymer;
b) heating the polyolefin-based composition to a sufficient temperature to form a layer over at least a portion of the mold tool;
c) pouring out powder from the mold tool;
d) optionally continuing to heat the mold tool so that all the powder melts; and
e) removing the instrument panel skin from the mold tool.
19 . The method of claim 17 further comprising:
f) applying the instrument panel skin to a structural component.
20 . The method 17 wherein the polyolefin-based composition further comprises an olefin block copolymer and a thermoplastic olefin and silicon oil combination.