Solution flow splitting for improved sheet uniformity

Details Solution flow splitting for improved sheet uniformity Solution flow splitting for improved sheet uniformity

1991-01-02

1992-05-26

Lorin, Hubert C.

Plastic and nonmetallic article shaping or treating: processes

Formation of solid particulate material directly from molten...

264 13, 264205, D01D 511

Patent

active

051165490

ABSTRACT:
A method for splitting the flow of a spin solution in a standard flash spinning process to increase sheet uniformity at increased flow rates. In one embodiment, the apparatus comprises a coarse mesh screen that is positioned within the pressure let-down zone of the spinneret assembly. The screen divides the solution flow into numerous individual sheet uniformity compared to sheets formed without the screen and at the same flow rate. The method produces nonwoven sheets having less ropiness and improved uniformity at relatively high solution flow rates.

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