Voith Sulzer Paper Technology North America, Inc.

Voith Paper Gmbh

James A Eng

Edwin X Graf

Dale A Haltinner

David W Root

Frank Stilen

Peter T Hunnicutt

A control system for measuring a gap in an apparatus for pressing a traveling paper web as the paper web travels through the gap accompanied by at least one belt or felt, the apparatus including a press apparatus and a support surface defining a gap therebetween. A frame is provided for moveably supporting the press apparatus. An actuator is operatively disposed between the frame and press apparatus for selectively moving the press apparatus toward and away from the support to control the gap size. A transducer is mounted in either the press apparatus or support for producing a signal indicative of the pressure on the paper web as the paper web, belt and felt pass through the gap beneath the transducer. A controller is operatively linked with the transducer for receiving the signal, determining the measure of the gap as a function of the pressure, and causing the actuator to selectively move the press apparatus to control the gap size.

Control system for gap measuring

An apparatus for one of direct and indirect application of a coating medium onto a traveling fiber material web includes at least one doctor element for application and/or metering of the coating medium. At least one doctor element is formed of a carbon fiber material.

Carbon fiber doctor blade

A calender press for use in a paper-making machine includes a top roll positioned adjacent to a nip and rotatable about a longitudinal axis thereof. The top roll has a length and circumferential perimeter. The length extends in the direction of and is longer than the width of the fiber web. The top roll is thermally compensated in a plurality of thermal zones which are adjacent to each other across the length of the top roll, whereby the perimeter of the top roll may be adjusted in a locally adjustable manner toward and away from the nip. A bottom roll is positioned adjacent to the top roll and defines the nip with the top roll. The bottom roll is rotatable about a longitudinal axis thereof and has a length and circumferential perimeter. The length extends in the direction of and is longer than the width of the fiber web. The perimeter is smaller at each longitudinal end of the bottom roll and larger at approximately a midpoint between the longitudinal ends, thereby defining a crowned bottom roll. The bottom roll is thermally compensated in a plurality of thermal zones which are adjacent to each other across the length of the bottom roll, whereby the perimeter of the bottom roll may be adjusted in a locally adjustable manner toward and away from the nip. The thermal compensation of the bottom roll and the top roll coact to effect a nip load of less than approximately 150 pounds per linear inch between the top roll and bottom roll.

Calender press for a paper-making machine with thermally compensated top and bottom rolls and low nip load

A method of manufacturing a suction roll shell for use in a paper-making machine utilizes a mandrel with a length and a cross-sectional area corresponding to the shell. The mandrel has a plurality of generally radially extending holes. A plurality of pins are placed in the holes, with each pin extending radially outward from the shell a distance greater than a desired thickness of the shell. At least one elongate fiber is wound around the mandrel to form the shell with the desired thickness. The pins are removed from the mandrel and the shell.

Suction roll shell in a paper-making machine and method of manufacturing same

A headbox for a paper-making machine includes a plurality of side walls and an apron. A nozzle blade is connected to one of the side walls. The nozzle blade and the apron define a discharge nozzle therebetween. A profile bar is rigidly connected to an end of the nozzle blade. A slice lip is rigidly and removably attached to the profile bar and/or nozzle blade. The slice lip and the apron define a discharge outlet therebetween.

Profile bar assembly for a headbox in a paper-making machine

A coater for applying a coating medium to a moving surface includes a mounting; a coater rod bed connected to the mounting; and a coater rod carried by the coater rod bed. The coater rod is configured for applying the coating medium to the moving surface, and includes a hollow rod with a longitudinal bore interconnecting opposite ends thereof. A pair of fluid couplings are respectively attached to each end of the coater rod. Each fluid coupling has an internal fluid passage which is disposed in fluid communication with the longitudinal bore of the coater rod, whereby a thermal transfer fluid may be transported through the longitudinal bore of the coater rod.

Thermally compensated coater rod

A metering size press rod assembly specifically for use in a paper-making machine is stored and transported in a container and use in the paper-making machine. A plurality of metering size press rod assemblies are assembled. A storage sand transport container is provided at shipping location. The container includes a plurality of elongate openings therein. Each metering size press rod assembly is loaded into a corresponding one of the elongate openings in the container. The container is then transported to a user location, the metering size press assemblies are then sequentially and individually removed from the container, used in the papermaking machine and reloaded into the elongate openings in the container. The container with the used metering size press rod assemblies is the transported back to the shipping location.

Method and assembly for storing, transporting and using a metering size

The invention is directed to a continuous belt edge detector system for use in a paper making machine having a continuous belt guide device. The edge detector system comprises a continuous belt having an edge dope with metallic particles therein and an inductive sensor connected to the guide device and adjacent the edge dope. The inductive sensor sends a signal to the guide device indicative of a location of the continuous belt. The guide device moves the continuous belt, e.g., transversely relative to the running direction of the belt within the machine, dependent on the inductive sensor signal.

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Appleton, WI, United States of America

James A Eng