Alliedsignal Inc.

Honeywell International Inc.

Alfred L Cutrone

Chok Bin Tan

Thomas Y Tam

Gene C Weedon

James J Dunbar

Elizabeth S Bledsoe

Thomas Y-t Tam

High strength polyethylene yarns useful in ballistic-resistant, cut-resistant and other applications, fabrics produced from these yarns and the methods by which the yarns and fabrics are made. An untwisted yarn of the invention comprises a plurality of filaments in essentially parallel array and from about 0.5 to 5 weight percent of a water-dispersible binder material covering less than half the surfaces of the filaments. The yarn has a tenacity greater than about 17 g/d, a tensile modulus greater than about 300 g/d, fewer than 20 entanglements/meter in a scoured state and a width less than given by the formula&#x2266;0.055&#x221a;where W is the yarn width in millimeters under a tensile load of 0.01 g/d measured on a flat surface and d is the yarn denier.

Polyethylene protective yarn

An entangled multifilament yarn made from high strength filaments having a tenacity of at least about 7 g/d, a tensile modulus of at least about 150 g/d and an energy-to-break of at least about 8 J/g. The yarn is used to make ballistic resistant articles.

Entangled high strength yarn

An article including a woven fabric for impeding the passage of air, the fabric having an air permeability of less than about 15 cfm/ft.sup.2 and including at least one multifilament yarn having a longitudinal axis, the yarn being made of high strength filaments having a tenacity of at least about 7 g/d, a tensile modulus of at least about 150 g/d and an energy-to-break of at least about 8 J/g. Preferably, the high strength filaments are extended chain polyethylene.

Fabric having reduced air permeability

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Midlothian, VA, United States of America

Alfred L Cutrone