Optics: measuring and testing – By monitoring of webs or thread
Patent
1993-03-09
1995-02-28
Hille, Rolf
Optics: measuring and testing
By monitoring of webs or thread
356371, 73159, 162198, 162263, G01N 2184, G01B 1130
Patent
active
053942477
ABSTRACT:
A method for determining the tendency of a non-woven web to curl, where the web has a machine direction (MD), a cross-machine direction (CD) and the web includes a wire side and a felt side. The method comprises determining a wire ratio which is the ratio of the number of fibers oriented in the MD to the number of fibers oriented in the CD, where the fibers are associated with the wire side of the web, a felt ratio which is the ratio of the number of fibers oriented in the MD to the number of fibers oriented in the CD, where the fibers are associated with the felt side of the web, and determining the wire to felt ratio which is a measure of the tendency of the web to curl.
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Suska James F.
Vahey David W.
Hille Rolf
International Paper Company
Ostrowski David
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