Johnston Dandy Company

Johnston Dandy Company

148 Main Street Lincoln, Maine 04457 USA

Cylinder Mould

Cylinder Mould

A flexible, creative, open-minded approach to problem solving enables us to offer economical design solutions as we work with you to continually improve the papermaking process.
For more than four decades E.F. Cook Co. has been building superior cylinder moulds. Outstanding features include:

  • High drawing efficiency
  • Near perfect concentricity
  • Maximum open area
  • Ease of cleaning
  • Minimum deflection due to a design which emphasizes stiffness and rigidity

At E.F. Cook we employ proprietary manufacturing techniques, sound engineering principles and a team effort to develop the best cylinder mould for your application.

We work closely with you to determine the best cylinder design for your application and provide CAD and 3D visualization drawings for your review and approval prior to construction.

The Centrifugally Cast Core

Our cylinders, with diameters ranging from 30” to 72”, begin with a hollow centrifugally cast iron core. Depending on application and budgetary restriction, a core clad with T-316L stainless sheet or a solid T-316L / T-304L center shaft may be used. Subjected to various wet environments, cast iron will not readily rust through and is considerably more corrosion resistant than steel. Centrifugal casting produces a very dense core with excellent balance, rigidity, and walls of uniform thickness. Each core is engineered for maximum operating efficiency with minimum deflection. The core is shrink fitted to each journal, then machined to uniform diameter to accept shrink fitted spiders onto its shaft.

Spider Design

Cook Cylinder Moulds are manufactured with either engineered cast bronze or stainless steel spiders. Bronze and T-316L has offered mills years of trouble free service at an economical cost. In certain environmental applications cylinder moulds may be manufactured in stainless steel.

Depending on your particular application, a copper alloy is selected using the following criteria: corrosion resistance, mechanical properties, physical properties and fabricability.

Engineered for strength, corrosion resistance and machined to precise tolerances, we are proud to say our spiders have consistently met or exceeded mill expectations for endurance and longevity over the years.

Surface Construction

Surface construction is very important in designing the right cylinder mould for your specific machine, whether you are running pressure formers, semi-formers, counter flow, direct flow or dry vats.

Cylinder size, speed, loading, dewatering requirements and open area are some of the variables we consider when recommending a surface construction and face wire selection that will enable your cylinder to operate at maximum efficiency.

Three examples of surface construction, using various sizes and styles of top rods and winding wire, illustrate how open area can be altered. Our years of experience in constructing cylinder moulds enable us to recommend the best design for your machine.

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