E.i. Dupont De Nemours and Company

Stasys K Rudys

David Charles Jones

Charles Benjamin Simon

Virginia McAndrews Walsh

David Jackson McGinty

David M Harriss

Linda C Fisher

Ross W Knapp

Douglas John Nattrass

A breathable composite sheet material includes a first layer of flash-spun polyethylene plexifilamentary film-fibril sheet and a second layer of a thermoplastic open mesh fabric thermally laminated to the first layer. The composite sheet has an average tensile strength and an average grab tensile strength that are each at least 10% greater than the sum of the tensile and grab strengths of the first and second layers. The average tensile strength of the composite sheet after exposure to 400 mJ/m.sup.2 of ultraviolet light is at least 65% of the tensile strength of the sheet before any substantial exposure to ultraviolet light.

Composite sheet material

Improved sheets of bonded plexifilamentary film-fibril strands spun from a polyolefin and a pigment are provided. The polyolefin comprises at least 90% by weight of the fibril strands, and the pigment comprises between 0.05% and 10% by weight of the fibril strands. The sheet has a high opacity and high smoothness, even when the sheet is bonded to a delamination strength greater than 120 N/m or when subjected to calendering. The sheet material is highly printable.

Flash-spun sheet material

A nonwoven bulky composite sheet material has first and second vapor permeable layers on opposite sides of a third layer of a bulky, flexible material. The third layer has a thickness in the range of 0.3 to 3.0 mm before being bonded between said first and second layers. The first layer, the second layer and the third layer are bonded together to form a flexible composite sheet with a thickness of at least 0.3 3 mm and a moisture vapor transmission of at least 100 g/m.sup.2 in 24 hours.

Packaging cover

A motor vehicle transport cover is made of a vapor permeable, water impermeable, synthetic nonwoven sheet. The transport cover includes a mechanism for firmly attaching the nonwoven sheet in a position on a motor vehicle that covers substantially all of the roof, hood, and front bumper fascia of the vehicle and remains attached at air speeds along the major axis of the vehicle of at least 50 mph. The attachment mechanism is readily releasable and it leaves no visible adhesive residue on the vehicle at the moment the nonwoven sheet is removed from the vehicle. The transport cover may be a unitary cover that covers substanstially all of the finished surfaces of a covered vehicle. The transport cover does not prevent driver access to a covered vehicle and it does not unduly obstruct the view of a driver of a covered vehicle.

Vehicle transport cover

A motor vehicle transport cover is made of a vapor permeable, water impermeable, synthetic nonwoven sheet. The transport cover is includes a mechanism for firmly attaching the nonwoven sheet in a position on a motor vehicle that covers substantially all of the roof, hood, and front bumper fascia of the vehicle and remains attached at air speeds along the major axis of the vehicle of at least 50 mph. The attachment mechanism is readily releasable and it leaves no visible adhesive residue on the vehicle at the moment the nonwoven sheet is removed from the vehicle. The transport cover does not significantly inhibit access to the covered vehicle and it does not obstruct the view of a driver of the covered vehicle. The transport cover has a front sheet piece made to cover the hood of the covered vehicle and a top sheet piece made to cover the roof of the covered vehicle. Where the covered vehicle is a sedan, the transport cover may also cover the trunk and rear bumper of the vehicle.

A nonwoven bulky composite sheet material as first and second vapor permeable layers on opposite sides of a third layer of a bulky, flexible material. The third layer has a thickness in the range of 0.3 to 3.0 mm before being bonded between said first and second layers. The first layer, the second layer and the third layer are bonded together to form a flexible composite sheet with a thickness of at least 0.3 3 mm and a moisture vapor transmission of at least 100 g/m.sup.2 in 24 hours.

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Midlothian, VA, United States of America

Stasys K Rudys