D - Textiles – Paper – 21 – F
Patent
D - Textiles, Paper
21
F
92/17.6
D21F 1/02 (2006.01) D21F 1/00 (2006.01) D21F 1/06 (2006.01)
Patent
CA 1160492
ABSTRACT A papermaking headbox with adjustable rigid slice lips especially adapted to permit deflection of the slice lips on a headbox utilized with a twin wire or crescent forming papermaking machine. The headbox comprises elongated slice lips extending into the forming zone located between converging papermaking wires or fabrics, the slice lips being substantially rigid in construction and affixed at their rearmost ends to headbox support members. One or both of the slice lips may be provided with a full width machined channel into which the actuating means in the form of relatively inflexible bellows are positioned. These metal bellows are in turn connected to a fluid supply means which cause a small axial movement only. The fluid supply means is adapted to supply a fluid under pressure of at least 1,000 pounds per square inch to the bellows, such that upon actuation of the bellows, the slice lip will be deformed, thereby restricting the slice opening. The full width channel provides a uniform flexure point for the adjustable slice lip.
392378
Nuttall David A.
Kimberly-Clark Worldwide Inc.
Macrae & Co.
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