METHOD OF GAS-ASSISTED INJECTION MOULDING AND PLASTIC ARTICLE

摘要

A plastic part (10) is formed with a hollow portion (18) and an integral evacuation (12) channel extending from the hollow portion (18) to a gate (16) at which plastic for the part was injected. During the injection molding process for the part (10), the channel (12) and portion to be hollowed (18) are filled with molten plastic, and a gas is injected into the portion (18) to be hollowed to force molten material from the portion to be hollowed back through the channel (12).