Title: Method for processing staple fibers on a roller card unit

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Claims: What is claimed is:

1. In a method for processing staple fibers on a roller card unit composed of a rapidly rotating main cylinder and a plurality of pairs of rollers, each pair being constituted by a work roller and a clearing roller associated therewith, which method includes rotating the main cylinder and the rollers at speeds such that the peripheral speed of the main cylinder is higher than that of each of the rollers and the peripheral speed of each of the clearing rollers is higher than that of the work roller of the same pair, and rotating the rollers at speeds sufficient to cause the sum of the peripheral speeds of the work roller and the clearing roller of each pair to be greater than 250 m/min, the improvement wherein said step of rotating the rollers comprises rotating each said work roller at a rate corresponding to a peripheral speed of greater than 90 m/min.

2. Method as defined in claim 1 wherein said step of rotating the rollers further comprises rotating each said clearing roller at a rate corresponding to a peripheral speed of greater than 200 m/min.

3. A method as defined in claim 1 wherein said step of rotating the main cylinder is carried out to give the main cylinder a peripheral speed of between 600 and 1500 m/min.

Other info:

Inventors: Bernhardt, Siegfried (Bremen-Farge, DT)
Kutscher, Gerhard (Bremen, DT)

Application Number: 588175
Filing Date: 1975-06-18
Publication_date: 1978-01-10
Assignee: Fried. Krupp Gesellschaft mit beschrankter Haftung (Essen, DT)
Primary Class(es): 19/101
Other Classes:
US Patent Ref:

709980	Sep, 1902	Gilljam	19/100.
1953386	Apr, 1934	Bates	19/99.
2560013	Jul, 1951	Varga	19/100.
2788547	Apr, 1957	Kaufman et al.	19/98.
3145425	Aug, 1964	Varga	19/98.
3308511	Mar, 1967	Culpan	19/98.

Other Refs: 273,799

Jul, 1927	UK

Primary Examiner: Newton, Dorsey
Assistant Examiner:
Attorney: Spencer & Kaye