PROCESS

Liquid plastic, together with a catalyst, is introduced into a closed 2-piece tool. Catalytic reaction, which creates heat, causes plastic to expand to fill the mold. Parts can be flexible, rigid or self-skinning.

RAW MATERIALS

Liquid urethane in various combinations with liquid catalyst.

TOOLING

Machined steel or aluminum; cast aluminum.

COST

Parts & tooling relatively high.

ADVANTAGES

Strong, flexible, lightweight parts which can easily be painted.

DISADVANTAGES

Slow cycles, expensive raw materials.

EXAMPLES

Automotive spoilers, interior trim panels for automobiles and trucks.