Apparatus for dry forming a layer of fiber
AssigneeKarl Kroyer St. Anne's Limited
InventorFrederick Tapp
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Abstract
A distributor box for dry forming a layer of fiber on a forming surface spaced below it, wherein obturators, e.g. dependent flaps, are located around an air gap between the bottom of the box and the forming surface in pre-selected position to modify the lateral air flow induced into the air gap and so assist the formation of a layer with a uniform depth.
Claims9
Apparatus for drying forming a layer of fibre and comprising a distributor box having an inlet for fibres and a fixed perforated bottom wall, a foraminous forming surface which is spaced below the bottom wall, is movable past the distributor box and is arranged to receive the fibers through the bottom wall under the influence of suction exerted by a suction system connecting with the underside of the forming surface, wherein obturating means are disposed at an air gap between the bottom wall and the forming surface, which obturating means comprise a plurality of obturators positioned along the periphery of the air gap which are adjustable to provide variation in positions wherein laterally inward air flow through the periphery of the air gap is obstructed and positions wherein air openings are provided for laterally inward air flow through the periphery of the air gap.
Dependencies are inferred from the claim text.