Structural foam injection molding

Production Considerations Structural Foam Injection Molding Sheet Molding Compound... [Pg.559]

Compression Molding of Low-Density Foam Casting of Soft Plastisol Foam Extrusion of Structural Foam Injection Molding of Structural Foam Injection Molding Elimination of Sink-Marks... [Pg.473]

FIGURE 2.13 Structural foam injection molding, (a) During injection under high pressure there is very little foaming, (b) After injection, pressure drops and foaming occurs at hot core. [Pg.173]

A variety of foams can be produced from various types of polyethylenes and cross-linked systems having a very wide range of physical properties, and foams can be tailor-made to a specific application. Polypropylene has a higher thermostability than polyethylene. The production volume of polyolefin foams is not as high as that of polystyrene, polyurethane, or PVC foams. This is due to the higher cost of production and some technical difficulties in the production of polyolefin foams. The structural foam injection molding process, described previously for polystyrene, is also used for polyethylene and polypropylene structural foams (see Figure 2.61). [Pg.226]

Production considerations Structural foam Injection molding Sheet molding compound... [Pg.821]

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