E.i. Dupont De Nemours and Company

Dupont Safety & Construction, Inc.

James Neal Singletary

Kenneth C Harding

Leopoldo Alejandro Carbajal

Bryan Benedict Sauer

Timothy A Libert

William George Kampert

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 &#x3b4; when measured in dynamic mechanical analysis (DMA) of tensile response in a frequency sweep between 0.1 Hz&#x2264;f&#x2264;1.0 Hz meeting the inequality of tan &#x3b4;&#x3c;1/(f&#xd7;a)+b&#x2212;(f&#xd7;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.

Polyethylene sheet and articles made therefrom

An unconsolidated impact and penetration resistant laminate comprises a plurality of cross-plied sheets, each cross-plied sheet further comprising (i) first and second layers of fibrous or non-fibrous ultra-high molecular weight polyethylene and (ii) first and second layers of thermoplastic adhesive, each adhesive layer having a basis weight of no greater than 5 gsm, wherein

Composite ballistic resistant laminate

An impact penetration resistant laminate comprises a plurality of alternating layers of (i) non-fibrous ultra-high molecular weight polyethylene monolayers and (ii) a thermoplastic adhesive, the adhesive having a basis weight of no greater than 5 gsm and a zero-shear-rate viscosity, determined from an oscillating disc rheometer in a frequency sweep between 0.1 rad/s and 100 rad/s, conducted per ASTM D 4440 at 125&#xb0; C., and calculated from fitting to a Carrea-Yasuda four parameter model, of at least 1500 Pa-s, wherein

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Midlothian, VA, United States of America

James Neal Singletary