The process


Heat is used to melt and fuse a plastic resin in a closed mold. Unlike most other plastic processes, no pressure is involved.


The three-stage process includes loading the resin in the mold, heating and fusion of the resin and cooling and unloading the mold.


After the charged mold is moved into an oven, the mold is generally rotated on two axis at low speed. As heat penetrates the mold, the resin adheres to the mold's inner surface until it is completely fused.


The mold is then cooled by air or water spray or a combination of both while still rotating, lowering the temperature in a gradual manner.


The mold is opened, the finished part is removed and the mold is recharged for the next cycle.


A variety of materials are available. The most widely used are polyethylenes and plastisols. Other materials include nylon, fluoropolymers, polypropylene, polycarbonate, cellulose acetate butyrate, elastomers, ionomer, polyurethane. EVA and specially formulated compounds.


All our cases are made from unbreakable polyethylene.