Rotational molding technology is
expanding the capabilities of polymer product manufacturers
by enabling them to create light-weight, seamless, stress-free
parts of virtually any size in the most complex shapes. Rotationally
molded products represent a wide range of materials, performance
characteristics, colors, surface textures and finishes. The
products can be custom-designed to meet precise market requirements
more economically than by conventional injection or blow molding.
Rotational molding is a three-stage, no-pressure, plastic molding process. During
the heating stage, the mold slowly rotates in two planes (bi-axial
rotation). Heat transfer causes the plastic charge inside
the mold to melt and uniformly coat the interior of the mold.
During the second stage, the mold moves to the cooling station,
3-Stage
Process
where it is cooled by air and/or water spray.
In the final load/unload stage, the part is removed from the
mold and a new charge of material is loaded into the mold.
Ferry's innovative RotospeedTM machines enhance
this process with design styles that vary the configuration
of these three stages. A variety of sizes accommodate most processor
needs. Ferry offers over 30 standard models of Rotospeedª
rotational molding machines, with mold swings to 218" (5537
mm) and weight capacities to 10,000 pounds (4540 kg). Versatile,
dynamic and market-responsive, Ferry Industries is committed
to introducing new designs, product refinements, and effective
integration of ancillary equipment to advance the technology
and value of the Rotospeed product line.
This unique polymer molding process affords molders
the ability to produce items ranging from small toy doll components
to agricultural tanks that will hold up to 22,500 gallons (85,167
liters) of liquid. A variety of polymer materials can be used
to provide specific characteristics to the products. By interjecting
multiple-charges a foaming agent can be added to provide insulating
qualities. Close tolerances and tight radii can also be made
to afford interchangeable and interlocking components. The world
of rotational molding is the fastest growing segment of the
polymer industry. We can help you grow too!
