|국가/구분||United States(US) Patent 등록|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 10 인용 특허 : 48|
A method and system for producing hollow rib structures for trim components and panels using gas assisted injection molding. Spring biased movable insert members are provided in the mold cavity, particularly at the ends of the structural rib members. After the plastic material is injected into the mold cavity, gas is introduced into the rib members in order to provide hollow channels therein. The displaced resin material forces the insert members to the full cavity positions and completes the formation of the molded plastic article.
1. A system for injection molding a plastic article having a hollow portion therein, the system comprising:a mold member having a mold cavity for defining an article, said cavity having at least one insert member positioned therein, and a biasing mechanism to hold said insert member in position during injection of plastic material; an injection molding machine for injecting a quantity of molten plastic material into the mold cavity; a gas introduction mechanism for introducing pressurized gas into at least a portion of the plastic material in the mold ca...