Reinforced nonwoven fire blocking fabric having ridges and grooves and articles fire blocked therewith
AssigneeE.I. du Pont de Nemours and Company
InventorsLaurence N. Bascom, Herman Hans Forsten
Life of this patent
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Abstract
This invention relates to a thin reinforced nonwoven fabric having ridges and grooves for fire blocking an article and articles containing such fabrics. When exposed to heat or flame, the fabric is capable of increasing to a thickness that is at least 1.5 times its original thickness. The fabric comprises an open mesh scrim having a having crimped, heat-resistant organic fibers compressed thereon and held in a compressed state by a thermoplastic binder, on which is imparted a ridge and groove structure. When subjected to high heat or flame, the binder in the structure softens, releasing the restrained crimped fibers and any ridges and grooves and allowing the thickness of the fabric to increase.
Claims20
A reinforced nonwoven fabric for fire blocking an article, comprising an open mesh scrim having a first side and a second side, the first and second sides having crimped, heat-resistant organic fibers compressed thereon, the fibers held in a compressed state by a thermoplastic binder, the fabric further having ridges and grooves, wherein when the fabric is exposed to heat or flame, the fabric is capable of increasing to a thickness that is at least 1.5 times its original thickness.
Dependencies are inferred from the claim text.