Apparatus for making a fibrous web
OwnerErnst Fehrerinventor
Life of this patent
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Abstract
Apparatus for making a fibrous web comprises a plurality of carding drums (3, 4, 5, 6), which closely succeed each other in the direction of travel of the feed web and rotate in the same sense. An air-permeable collecting surface is provided, on which the fibers of the feed web are deposited which fly from the carding drums (3, 4, 5, 6). Each carding drum (4, 5, 6) which succeeds another (3, 4, 5) in the direction of travel of the feed web constitutes a worker roller associated with the preceding carding drum. In order to increase the permissible speed of travel of the feed web, an additional worker roller (20) and a clearer roller (21) are associated with each carding drum (3, 4, 5, 6) on that side thereof which is remote from the collecting surface (7).
Claims6
Apparatus for making a fibrous web comprising a feeder for receiving a feed web, a plurality of serrated carding drums rotating in the same sense at a surface speed which permits the fibers on the drums to fly from the latter under centrifugal force, and an air-permeable collecting surface, which is continually moved and from which air is sucked, and wherein fibers of the preliminary web fly from the carding drums in respective partial streams, which impinge on the collecting surface at points spaced apart in the direction of travel of the collecting surface, the carding drums are arranged one behind the other in the direction of movement of the feed web and are closely spaced apart, and each carding drum which succeeds another in the direction of travel of the feed web constitutes a worker roller associated with the preceding carding drum, characterized in that each of the closely succeeding carding drums has associated with it an additional worker roller and a clearer roller, which are disposed adjacent to that half of the periphery of the drum that is remote from the collecting surface.
Dependencies are inferred from the claim text.