Textiles: fiber preparation – Assembling – Formed silvers
Patent
1975-04-10
1977-01-25
Newton, Dorsey
Textiles: fiber preparation
Assembling
Formed silvers
19 89, D01G 2500, D04H 172
Patent
active
040043231
ABSTRACT:
The invention resides in a method of forming a nonwoven web by employing a forming apparatus which includes a fiberizing roll for separating fibers from a feed mat and entraining them in a gaseous medium, a foraminous forming surface through which the gaseous medium passes and upon which the fibers are condensed to form a fibrous web, and a formation duct between the fiberizing roll and the forming surface for defining a flow path for the gaseous suspension of fibers from the fiberizing roll to the forming surface; the improvement wherein the formation duct includes front and back, substantially planar inner surfaces which may slightly converge in a direction from the fiberizing roll to the forming surface, but preferably diverge at an angle of up to about 41/2 degrees when the forming surface is a curved surface of a cylindrical drum, and up to about 11/2 degrees when the forming surface is a linear surface of a forming belt; the formation duct being inclined to the forming surface to define an incidence angle with the forming surface in the range of from about 10.degree. to about 30.degree. . The invention also resides in a method of forming a nonwoven web by employing the above-described apparatus.
REFERENCES:
patent: 476710 (1892-06-01), Wherry et al.
patent: 2451915 (1948-10-01), Burgsh
patent: 2897874 (1959-08-01), Stalego et al.
patent: 3150215 (1964-09-01), Houghton
patent: 3797074 (1974-03-01), Zafiroglu
patent: 3862472 (1975-01-01), Norton
Gotchel Joel Peter
Norton Henry James
Spengos Aris Constantine
Vaalburg Lawrence
Faigus Martin L.
Foley William J.
Newton Dorsey
Scott Paper Company
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