D - Textiles – Paper – 21 – F
Patent
D - Textiles, Paper
21
F
92/15.3
D21F 1/10 (2006.01)
Patent
CA 1278207
A WEB FORMING APPARATUS ABSTRACT OF THE DISCLOSURE A forming apparatus (10) is disclosed for forming a web from stock. The apparatus (10) includes a frame (14), a first and second plurality of guide rolls (16-26 and 30-34) rotatably connected to the frame (14), a first and second forming wire (28, 36) extending respectively around the first and second plurality of guide rolls, the first and second wires (28, 36) cooperating together to define therebetween, a forming section (38) having a first and second (40, 42) end. A headbox (12) is disposed adjacent to the first end (40) of the forming section (38). A suction shoe (44) is disposed adjacent to the first end (40) of the forming section for effecting an initial de- watering of the web. The suction shoe (44) has a curved surface (46) which abuts against the first wire (28) for removing a first portion of the water through the first wire (28) and a second portion of the water through the second wire (36). A vacuum slot (52) collects the second portion of water and a roll (17) is disposed between the vacuum slot (52) and the second end (42) of the forming section (38) for removing a third portion of the water from the formed web thereby resulting in a gradual increase in dewatering from the first to the second end of the forming section (38) thereby minimizing removal of fines from the stock and inhibiting two-sidedness of the resultant web.
532958
Metso Paper Inc.
Mitsubishi Heavy Industries Ltd.
Ridout & Maybee Llp
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