Forming shoe for a former in a paper machine

Details Forming shoe for a former in a paper machine Forming shoe for a former in a paper machine

D - Textiles, Paper

21

F

92/17.7

D21F 1/36 (2006.01) D21F 1/48 (2006.01) D21F 3/00 (2006.01) D21F 9/00 (2006.01)

Patent

CA 1219159

ABSTRACT OF THE DISCLOSURE A forming shoe in a two-wire forming section of a paper making machine has a curved guiding surface which guides a joint run of the wires and web interposed therebetween over a curved path of travel wherein the web is dewatered under the effect of the pressure between the wires at least in a direction away from the forming shoe, the dewatering action being assisted by the curvature of the forming shoe due to centrifugal forces. According to the invention, the length of the active portion of the forming shoe guiding surface, the surface quality or char- acteristics of the guiding surface and/or the radius of curva- ture of the guiding surface are adjustable so that web formation and the dewatering capacity of the forming shoe are controlled. For this purpose one or more devices are coupled to the forming shoe by which the attitude and/or location thereof is adjus- table. In one embodiment a device is provided between the frame of the forming section and that of the forming shoe for pivoting the forming shoe about a horizontal axis and/or displacing the forming shoe linearly with respect to the vertical and/or hori- zontal plane.

427104

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