MOLD FOAMING

Unlike continuous foaming, molded foams are usually produced in a discontinuous process. Foam molding is used to create products with intricate shapes such as seat cushions, paddings, head restraints, dampers, and construction materials.

This process involves pouring or injecting the components through a mixing head and into a preheated mold. The components react inside the mold causing the system to foam and rise.

The molded foam process can be further divided into the hot-molded foam process and the cold-molded foam process. As their name suggests, they are classified according to the mold temperature.

The hot-molded process involves conventional polyether mixed with TDI. The cold-mold process, on the other hand, uses polymer systems prepared from polyether and a blend of TDI and MDI, or 100% MDI. The faster reaction of MDI results in lower mold temperatures.