Beloit Technologies, Inc.

Noriaki Takeguchi

Arnold J Roerig

Thomas D Rogers

Richard R Hergert

Richard E Hergert

Jay A Shands

Scott B Pantaleo

Eugene B Neill

A headbox tube bank apparatus and method of directing flow through same is disclosed for permitting the flow therethrough of stock in a papermaking machine. The apparatus includes a tube bank frame for rigidly supporting the tube bank, the frame defining a plurality of openings. A plurality of tubes cooperate with the frame such that each tube extends through and is supported by an opening. Each tube has an upstream and a downstream portion, the upstream portion defining an internal cross-machine direction section of substantially circular configuration for maximizing the velocity of the stock through the tube. The downstream portion includes a first and a second end with the first end being connected to the upstream portion and the second end defining a downstream orifice having a flow area in a cross-machine direction which is of rectangular configuration for progressively improving the uniformity, stability, cleanliness, and for lowering turbulence of the stock during flow thereof through the downstream portion.

Headbox tube bank apparatus and method of directing flow therethrough

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Rockton, IL, United States of America

Noriaki Takeguchi