Plastic Foam Molding
Plastic foams can be defined as plastic materials that container at least two phases: a solid polymer matrix and a gaseous phase. It is possible to have extra solid phases in plastic foams, such as blend of polymers or fillers. Because of the void present in the material, foamed plastics have less material in a given volume than neat plastics. Therefore, the production cost of foamed plastic products can be significantly reduced since the material cost can constitute up to 70% of the total cost of a plastic product.
Plastic foams can be produced with densities ranging from 1.6kg/m3 to over 960kg/m3. In general, the mechanical properties of the foams sre directly proportional to their densities. As a result, high-density foams are usually used for load bearing applications, whereas low-density foams are used for thermal insulation or packaging purposes. With different production and post-processing techniques, plastic foams can be manufactured in a variety of shapes as required by their individual application.
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