Cushioning network structures, and methods of manufacturing thereof
AssigneeDow Global Technologies LLC
InventorsViraj Shah, Rajen M. Patel, Selim Bensason
Life of this patent
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Abstract
A cushioning network structure comprising a plurality of random loops arranged in a three-dimensional orientation, wherein the plurality of random loops are formed from an ethylene/a-olefin interpolymer composition having a highest DSC temperature melting peak in the range of from 90.0° C. to 115.0° C.; a zero shear viscosity ratio (ZSVR) in the range from 1.40 to 2.10; a density in the range of from 0.860 to 0.925 g/cc, a melt index (12) in a range of from 1 to 25 g/10 minutes when measured according to ASTM D1238 at 190° C. and 2.16 kg, a molecular weight distribution (Mw/Mn) in the range of from 2.0 to 4.5.
Claims18
A cushioning network structure comprising a plurality of random loops arranged in a three-dimensional orientation, wherein the plurality of random loops are formed from an ethylene/α-olefin interpolymer composition having a highest DSC temperature melting peak in the range of from 90.0° C. to 115.0° C.;
- a zero shear viscosity ratio (ZSVR) in the range from 1.40 to 2.10;
- a density in the range of from 0.860 to 0.925 g/cc;
- a melt index (I2) in a range of from 1 to 25 g/10 minutes when measured according to ASTM D1238 at 190° C. and 2.16 kg;
- and a molecular weight distribution (Mw/Mn) in the range of from 2.0 to 4.5;
- wherein the ethylene/α-olefin interpolymer composition comprises a first homogeneously branched random ethylene/α-olefin copolymer and a second homogeneously branched random ethylene/α-olefin copolymer.
A method of manufacturing a cushioning network structure comprising a plurality of random loops arranged in a three-dimensional orientation, wherein the method comprises:
- providing an ethylene/α-olefin interpolymer composition having a highest DSC temperature melting peak in the range of from 90.0° C. to 115.0° C.;
- a zero shear viscosity ratio (ZSVR) in the range from 1.40 to 2.10;
- a density in the range of from 0.860 to 0.925 g/cc, a melt index (I2) in a range of from 1 to 25 g/10 minutes when measured according to ASTM D1238 at 190° C. and 2.16 kg, a molecular weight distribution (Mw/Mn) in the range of from 2.0 to 4.5, wherein the ethylene/α-olefin interpolymer composition comprises a first homogeneously branched random ethylene/α-olefin copolymer and a second homogeneously branched random ethylene/α-olefin copolymer;
- and
- forming the ethylene/α-olefin interpolymer composition into a plurality of random loops having a three-dimensional orientation to form a cushioning network structure.
Dependencies are inferred from the claim text.