Foaming injection molding

Foam-injection molding Foam plastic sheathing Foam products Foam regulators Foam rheology... [Pg.416]

Acrylonitrile-butadiene-styrene polymers are similar in stmeture, but the acrylonitrile hardens the polymer. Minute rubber particles act as stress-relief centers, making it good for large objects luggage or car body parts. It can be chrome plated, foamed, injection molded, blown, and alloyed wiih other pla.siic. . [Pg.282]

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

Figure 8.5 (a ) Schematic of gas counterpressure foam injection molding (Cashiers Structural Foam patent)... [Pg.363]

In foam injection-molded parts the anooth-skinned resilient foam produces a tough energy-absorbing structure that is being used as a wood substitute in athletic products such as lacrosse-stick heads and hockey-stick blades. Protective structures for helmets and automotive parts are under development. All are being produced in densities ranging for 0.35 to 0.7 g/cc (22 to 44 Ib/ft ). In those applications where added sti ess is desirable the use of glass or titanate fiber reinforcement with the foamed structure is very effective (6). [Pg.234]

National Starch www.eco- foam.com/loosefill.asD ECOFOA M Modified maize/tapioca starch Expanded foams, injection molded toys, extruded sheet and blown film applications... [Pg.296]

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]