Atlanta Rotomolding  opened as a custom molder in February 2004. Our President, Bert Castillo has nearly three decades of rotational molding experience. He began his career as plant manager in Miami, Florida for twenty years and most recently he managed a facility in Conyers, Georgia for the past seven years. Along with his engineering education and experience, he brought with him a highly skilled staff to help run the day-to-day operations.

Our 22,000 sq ft is conveniently located just outside of Atlanta, Georgia serving a customer base located throughout the USA, Canada, and Mexico.

Our equipment is a State of the Art 4.0 Meter Rotoline shuttle machine. The unique design and the efficiency of this machine increase productivity by 30% over a typical carousel machine.

Our Mission

Our mission is to build our company based on delivering unsurpassed quality with the most cost-effective pricing available. We believe in conducting business honestly and with integrity. We pledge to provide total dedication to each individual client’s need large or small.


  • Economic tooling costs
  • Design Flexibility
  • Uniform wall thickness
  • One piece lightweight construction
  • Relatively stress-free corners
  • Resistance to Chemicals and corrosion
  • An endless pallet of color choices including granite colors


  • Design Engineering assistance
  • Solid Works compatibility
  • Graphics Molded in or Molded On
  • Four Point Quality Control
  • On-Time Delivery
  • Short and long runs with no charge set-up fee

Secondary Operations

  • Trimming
  • Routing
  • Drilling
  • Welding
  • Flaming
  • Inserts
  • Urethane Foaming
  • Polyethylene secondary foaming
  • Some assembly
  • Finishing
  • Packaging

rotomolding_process-rotomolding_machine-rotomouding_machine-rotational_molding_process-rotomoulding_process-máquina_para_rotomoldeo-rotomoldeo-safety_fence-02What is Rotational Molding?

Rotational molding is a process allowing the creation of large or small seamless hollow plastic parts. The process of bi-axial rotation had been around since the late 1800’s early 1900’s. The first written description of using bi-axial rotation and heat was to produce round, hollow artillery shells printed in 1865. But until the development of low-density polyethylene in 1942 by the British, it was just a curiosity in the then relatively new plastic industry.

The process begins when a mold mounted on the machine arm is charged with a pre-measured amount of powdered or liquid resin into the mold cavity. The mold is then clamped shut and begins rotating on its vertical and horizontal axes. The rotation continues as the arm conveys into a large oven heating the entire surface area of the mold. Once the mold surface and resin reach fusion temperature, the resin begins to melt creating a puddle in the lowest portion of the mold. As the mold continues rotating, each area of the mold passes through the puddle of molten resin again, and again pulling a thin layer of plastic material onto the inside surface of the cavity. Once the cooking cycle has been completed the arm then moves into a cooling chamber. The mold is either cooled by air, water or a combination of the two until the part can solidify and retain the cavity shape. The mold is then opened and the part is removed and the process is repeated over and over.