Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1989-01-17
1990-06-05
Cannon, James C.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
264113, 264518, 425 821, 428 74, 428190, 428286, 428298, 428913, 604365, 604374, 604376, 604378, 6043851, B32B 508, B32B 512, B32B 526, D04H 170
Patent
active
049313576
ABSTRACT:
A web or structure is formed by feeding separate supplies of fibrous material into contact with two separate lickerins that are parallel to each other and rotated toward each other. The fibers from the two lickerins pass through a mixing zone and are accumulated on a moving conveying screen that is moved parallel to the axes of the lickerins. Segmented baffle plates may be inserted into the mixing zone to control the lateral or cross-sectional composition of a web formed by the fibers accumulated on the screen. A segmented feed may be used to advantageously deliver different fiber materials at different rates to each lickerin. Radially layered composite web structures having circular cross-sections may be formed with the same apparatus by forming the conveying screen into a U-shape and selectively controlling the air flow through the screen.
REFERENCES:
patent: 4767586 (1988-08-01), Radwanski et al.
Farrington Allan P.
Marshall Gerald M.
Cannon James C.
Chicopee
Shirtz Joseph F.
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