High loft low density nonwoven webs of crimped filaments and...

Details High loft low density nonwoven webs of crimped filaments and... High loft low density nonwoven webs of crimped filaments and...

2007-11-06

2007-11-06

Crispino, Richard (Department: 1733)

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

C156S181000, C156S244110, C264S168000, C264S211140

Reexamination Certificate

active

10938294

ABSTRACT:
High loft, low density nonwoven webs are produced by forming substantially continuous, spunbond, crimped, bicomponent fibers of A/B bilateral morphology in an unheated fiber draw unit. The fibers are then heated and cooled in the absence of impeding forces to achieve maximum crimp in the z-direction and produce a web of lofted material. The resultant material is particularly suitable for use as an insulator. Particulates may be added to the webs if desired.

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