Double screen former with flexible laths spaced greater than opp

Details Double screen former with flexible laths spaced greater than opp Double screen former with flexible laths spaced greater than opp

1991-02-11

1991-09-03

Hastings, Karen M.

Paper making and fiber liberation

Apparatus

Running or indefinite length product forming and/or treating...

162300, 162352, D21F 902, D21F 136

Patent

active

050451537

ABSTRACT:
A double screen former for the manufacture of a paper web has two continuous screens forming together a double screen zone. The one screen runs in the double screen zone across rigid laths that are arranged on the dewatering box at a mutual spacing. Additionally, the other screen runs in the double screen zone across several laths which are supported by means of flexible elements and can be forced on the screen at a selective force. The space between the flexibly supported laths is at least approximately twice as large as the space between the rigid laths.

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