SUPPORTING APPARATUS FOR A CONVEYOR BELT AND DUMPING POINT AND SELF-DISCHARGING TRANSPORT SHIP COMPRISING SUCH APPARATUS

摘要

Disclosed is a process for making an injection molded article having a substantially smooth outer surface and a foamed core, as well as to a molded articles so produced, by injecting a molten thermoplastic into a mold, and when a skin has formed, injecting a gas and allowing a limited amount of molten material to flow back into the injection device, this creating a hollow space in the article. Finally, releasing the gas pressure to allow foaming of the core.