Process for crimping a non-woven mat and foam structure...

Details Process for crimping a non-woven mat and foam structure... Process for crimping a non-woven mat and foam structure...

B - Operations, Transporting

32

B

28/16

B32B 3/26 (2006.01) B32B 5/20 (2006.01) C04B 30/02 (2006.01) D04H 1/00 (2006.01)

Patent

CA 1143931

ABSTRACT OF THE DISCLOSURE The fibrous structure of a non-woven mat is disrupted by an apparatus comprising at least one roll which has one or more upraised ribs in a chevron pattern extending helically around the roll. In processing, the mat passes under tension over at least a portion of at least one chevron roll and preferably over two chevron rolls which may or may not be intermeshing. Thereafter, the mat may be crushed or crimped by being fed through to intermeshing third and fourth chevron rolls. Additional rolls may be supplied to exert tension. The mat which exits from the apparatus has a disrupted fibrous structure and is a superior skeleton within a structure such as a polymeric foam board.

339822

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