B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
B32B 5/26 (2006.01) D04H 13/00 (2006.01) D04H 1/42 (2006.01)
Patent
CA 2557605
This invention relates to a thin reinforced nonwoven fabric for fire blocking an article, articles containing such fabrics, and methods for making the fabrics and fire blocking the articles. When exposed to heat or flame, the fabric is capable of increasing its thickness by at least three times. 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. When subjected to high heat or flame, the binder in the structure softens and flows, releasing the restrained crimped fibers and allowing the thickness of the fabric to increase dramatically.
L'invention concerne un tissu non-tissé renforcé mince pour le blocage contre les flammes d'un article, des articles contenant de tels tissus, et des procédés de fabrication desdits tissus et de blocage des articles contre les flammes. Lorsqu'il est exposé à la chaleur ou aux flammes, le tissu est capable de tripler son épaisseur. Ledit tissu renferme une gaze de maille ouverte possédant des fibres organiques à résistance thermique, crêpées, comprimées et maintenues dans un état comprimé au moyen d'un liant thermoplastique. Lorsqu'il est soumis à une chaleur élevée ou à des flammes, le liant de la structure se ramollit et s'écoule, il libère alors les fibres crêpées retenues et permet à l'épaisseur du tissu d'augmenter considérablement.
Bascom Laurence N.
Knoff Warren F.
E. I. Du Pont de Nemours And Company
Torys Llp
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