Papermaking machine employing an impermeable transfer belt,...

Details Papermaking machine employing an impermeable transfer belt,... Papermaking machine employing an impermeable transfer belt,...

2011-08-02

2011-08-02

Halpern, Mark (Department: 1741)

Paper making and fiber liberation

Apparatus

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

Reexamination Certificate

active

07988829

ABSTRACT:
A papermaking machine for making paper includes a forming section, a press section, and a drying section. The paper web is pressed between two press members while enclosed between a press felt and a transfer belt having non-uniformly distributed microscopic depressions in its surface, the web following the transfer belt from the press to a transfer point at which the web is transferred via a suction transfer device onto a structuring fabric, the web then being dried on a drying cylinder. The transfer point is spaced a distance D from the press nip selected based on machine speed, a basis weight of the web, and the surface characteristics of the transfer belt, such that within the distance D a thin water film between the web and the transfer belt at least partially dissipates to allow the web to be separated from the transfer belt.

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