Plastic and nonmetallic article shaping or treating: processes – Forming articles by uniting randomly associated particles – With subsequent cutting – grooving – breaking – or comminuting
Patent
1989-05-12
1990-11-20
Fertig, Mary Lynn
Plastic and nonmetallic article shaping or treating: processes
Forming articles by uniting randomly associated particles
With subsequent cutting, grooving, breaking, or comminuting
264 401, 264 407, 264518, 264115, 425 821, 425 831, B27N 304
Patent
active
049717421
ABSTRACT:
Apparatus for forming highly isotropic web products includes an elevator that adjustably positions a former head and an associated air and fiber supply with respect to a product condenser for varying the width and density of an isotropic web formed thereon. The process of the present invention includes selectively directing individual fibers into first and second vertical air curtains the first of which is intercepted by a backwardly inclined condenser for forming a first feed mat which is stripped to form the fiber supply for the second vertical air curtain and wherein the velocity and the height of the second vertical air curtain are controlled to control the density and width of a resultant isotropic web structure formed on a continuous belt type condenser.
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Brooks Stanley H. W.
Surber William B.
Fertig Mary Lynn
General Motors Corporation
Tung Randy W.
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