Apparatus for forming a fibrous structure

Details Apparatus for forming a fibrous structure Apparatus for forming a fibrous structure

1977-02-28

1978-01-03

Newton, Dorsey

Textiles: fiber preparation

Assembling

Formed silvers

19 89, D04H 100

Patent

active

040658325

ABSTRACT:
An apparatus and method for fluid-forming (e.g., air-forming) a fibrous structure, such as a fibrous web, employs a conveying duct through which a stream of fluid-entrained fibers is directed, and a foraminous surface intercepting the downstream end of the duct to collect the fibrous structure on its surface. The improvement resides in establishing an oblique orientation between the foraminous surface and the direction of fiber flow through the duct so that the width of the foraminous surface intercepting the open end of the duct is greater than the width of the downstream end of the duct, as measured between laterally spaced sidewalls in a direction generally normal to the direction of material flow through the duct. In accordance with this invention the width of the fibrous structure deposited on the foraminous surface is greater than the width of the stream of fluid-entrained fibers confined within the conveying duct.

REFERENCES:
patent: 3220811 (1965-11-01), Schuller
patent: 3369276 (1968-02-01), Kalwaites
patent: 3544414 (1970-12-01), Simison
patent: 3753271 (1973-08-01), McBean
patent: 3862472 (1975-01-01), Norton et al.

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