Polyethylene sheet and articles made therefrom
AssigneeE. I. Du Pont de Nemours and Company
InventorsKENNETH C. HARDING, JAMES NEAL SINGLETARY
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Abstract
A non-fibrous oriented polyethylene monolayer comprising ultra high molecular weight polyethylene, the polyethylene having a viscosity-average molecular weight of 2,000,000 or greater, wherein (i) the monolayer has a width of 10.0 mm or greater and a modulus of at least 100 N/tex, (ii) the monolayer has a tan δ when measured in dynamic mechanical analysis (DMA) of tensile response in a frequency sweep between 0.1 Hz≤f≤1.0 Hz meeting the inequality of tan δ<1/(f×a)+b−(f×c) where a=120, b=0.045 and c=0.016, and (iii) the monolayer has a maximum areal weight of no greater than 45 gsm.
Claims11
A non-fibrous oriented polyethylene monolayer comprising ultra high molecular weight polyethylene (UHMWPE), the polyethylene having a viscosity-average molecular weight of 2,000,000 or greater, wherein
- (iv) the monolayer has a width of 10.0 mm or greater and a modulus of at least 100 N/tex,
- (v) the monolayer has a tan δ when measured in dynamic mechanical analysis (DMA) of tensile response in a frequency sweep between 0.1 Hz≤f≤1.0 Hz meeting the inequality of
- tan δ<1/(f×a)+b−(f×c) where a=120, b=0.045 and c=0.016.
- (vi) the monolayer has a maximum areal weight of no greater than 45 gsm.
Dependencies are inferred from the claim text.