Durable nonwoven fabric

Details Durable nonwoven fabric Durable nonwoven fabric

D - Textiles, Paper

04

H

D04H 1/54 (2006.01) A41D 31/00 (2006.01) B32B 5/26 (2006.01) D04H 1/56 (2006.01) D04H 3/16 (2006.01) D04H 13/00 (2006.01)

Patent

CA 2080084

DURABLE NONWOVEN FABRIC Abstract of the Invention There is disclosed a thermally bonded spunbond web of thermoplastic filaments and a nonwoven fabric laminate comprising an internal layer of meltblown thermoplastic microfibers sandwiched between two layers of spunbond thermoplastic filaments. The spunbond web and the spunbond layers of the fabric laminate consist of thermoplastic filaments which are formed from a mixture of a thermoplastic polymer and an effective amount of a nucleating agent. The layers are bonded by thermal spot bonding. In the preferred embodiment, the thermoplastic polymer is polypropylene with a melt-flow rate of at 230°C of or greater than 12 grams per ten minutes. Also in the preferred embodiment, the nucleating agent constitutes from about 0.1 to 0.3 percent by weight of the mixture of polypropylene and nucleating agent. The nucleating agents that are useful include dibenzylidene sorbitol, di(methylbenzylidene) sorbitol, bis (p-ethylbenzylidene) sorbitol and hydrophobic, fumed silica having particle sizes up to 1 micron in diameter. The nonwoven laminate is particularly useful in manufacturing work garments and other protective apparel having enhanced durability.

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