Apparatus for the twin-wire air laying of fibrous pads

Details Apparatus for the twin-wire air laying of fibrous pads Apparatus for the twin-wire air laying of fibrous pads

1975-04-11

1976-11-30

Newton, Dorsey

Textiles: fiber preparation

Assembling

Formed silvers

D01G 2500

Patent

active

039940470

ABSTRACT:
Fibers are air laid on a twin-wire machine to form a composite pad. A pair of endless foraminous carriers are passed through a forming chamber where fibers suspended in air are directed between the carriers. A layer of fibers is built up on each of the carriers by applying pressure differential across the carriers in the chamber to force air from the suspension through the carriers. In one form of the invention the air is directed through the respective carriers in different patterns to form a respective fiber layers of different cross section. The carriers converge within the chamber in their direction of motion to join the facing surfaces of the respective layers to form a composite pad of non-uniform cross section. According to one aspect of the invention, excess fibers are removed from the facing surfaces just prior to their being joined.

REFERENCES:
patent: 2688393 (1954-09-01), Uschmann
patent: 3030245 (1962-04-01), Greiner et al.
patent: 3071822 (1963-01-01), Meiler

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