FIRE-RATED MULTILAYER FABRIC WITH INTUMESCENT LAYER
First Claim
1. A flexible fire and smoke barrier for use with a spool and a rail in a passageway of a structure, the barrier comprising:
- a sheet of fire and smoke barrier material having a leading edge, a trailing edge attached to the spool, and two lateral edges, wherein the sheet of material has containment loops at the lateral edges, and wherein the containment loops are configured to engage the rail in a passageway of the structure, and further wherein the sheet of material is configured to wind onto and off of the spool between an open position in which the sheet of material is wound on the spool and a closed position in which the sheet of material is at least partially unwound from the spool and blocks the passageway;
wherein the sheet of fire and smoke material comprises a plurality of layers, comprising,an insulative layer having a first side and a second side, anda first sacrificial layer on the first side of the insulative layer and a second sacrificial layer on the second side of the insulative layer, wherein the first sacrificial layer is configured to be compromised if the barrier is exposed to heat above a predetermined threshold on a first side of the barrier.
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Accused Products
Abstract
The subject invention comprises a flexible multilayer fire-rated material that has at least one layer of an intumescent material. Because it is flexible, the fire-rated material is usable in situations where it is desirable for the fire-rated material to be rolled up or folded into a non-flat storage application. This allows the subject fire-rated material to be used in fire-rated and smoke-resistant barriers that are recessed in walls or ceilings until use. One end use embodiment includes without limitation, recessed or rolled up fabrics used in elevator lobby ceilings to seal off elevators or their lobbies from smoke or fire.
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Citations
22 Claims
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1. A flexible fire and smoke barrier for use with a spool and a rail in a passageway of a structure, the barrier comprising:
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a sheet of fire and smoke barrier material having a leading edge, a trailing edge attached to the spool, and two lateral edges, wherein the sheet of material has containment loops at the lateral edges, and wherein the containment loops are configured to engage the rail in a passageway of the structure, and further wherein the sheet of material is configured to wind onto and off of the spool between an open position in which the sheet of material is wound on the spool and a closed position in which the sheet of material is at least partially unwound from the spool and blocks the passageway; wherein the sheet of fire and smoke material comprises a plurality of layers, comprising, an insulative layer having a first side and a second side, and a first sacrificial layer on the first side of the insulative layer and a second sacrificial layer on the second side of the insulative layer, wherein the first sacrificial layer is configured to be compromised if the barrier is exposed to heat above a predetermined threshold on a first side of the barrier. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 16, 17, 18)
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11. A multi-layer, bi-directional barrier comprising:
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a strength layer having a first side and a second side; a first phase decomposition layer on the first side of the strength layer and a second phase decomposition layer on the second side of the strength layer, wherein the first and second phase decomposition layers comprise an intumescent layer configured to char when heated above a predetermined threshold temperature; and a first thermally reflective layer on the first phase decomposition layer and a second thermally reflective layer on the second phase decomposition layer, wherein the first and second thermally reflective layers and the first and second phase decomposition layers are configured to release from the barrier when impinged by a stream of water of a predetermined volume level after the barrier is exposed to heat above a predetermined threshold. - View Dependent Claims (12, 13, 14, 15)
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19. A method of manufacturing a flexible heat and vapor barrier, comprising:
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applying a first sacrificial layer on a first side of the base layer, wherein the base layer comprises a flexible, thermally insulative intumescent sheet of material; applying a second sacrificial layer on a second side of the base layer opposite the first side of the base layer, wherein the first and second sacrificial layers are thermally reflective; and applying the barrier to a retracting mechanism into which the barrier can be retracted when not in use. - View Dependent Claims (20, 21, 22)
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Specification