公开(公告)号：US06730259B1

公开(公告)日：2004-05-04

申请号：US09697418

申请日：2000-10-26

申请人： Kenji Ikeda ,  Takashi Shimogata

发明人： Kenji Ikeda ,  Takashi Shimogata

IPC分类号： B29B4912

CPC分类号： B29C49/061 ,  B29B2911/14326 ,  B29B2911/14606 ,  B29B2911/14633 ,  B29B2911/14666 ,  B29B2911/14753 ,  B29C49/06 ,  B29C49/12 ,  B29K2067/00 ,  B29L2031/716 ,  B29L2031/717

摘要： A method for stretch blow molding a wide-mouthed container, employing a preliminary stretching before stretch blowing without making an upper body portion thickened so as to thin the wall thickness from the connecting portion between the mouth portion and the body portion, thereby preventing the thickening phenomenon at the subjected portion. A preform having a large diameter mouth portion, a body portion and a bottom portion is injection molded within an injection mold. The preform is released from the injection mold in a state where the inside thereof is still in a high temperature while holding the mouth portion of the preform with a lip mold. Then, the preform is transferred to a blow mold as it is. Before the stretch blow molding step of the preform, a stretching rod is descended in a predetermined length to preliminary stretch the body portion in some extent. After thinning a connecting portion of the upper body portion between the body portion and the mouth portion, the entire body portion is stretch blow molded into a wide-mouthed container.

摘要翻译： 一种用于拉伸吹塑宽口容器的方法，在拉伸吹塑之前采用预拉伸而不使上体部分变厚从而使得壁部从口部和主体部分之间的连接部分变薄，从而防止增厚 现象。 具有大口径部分，主体部分和底部部分的预成型件在注射模具内注塑成型。 在用唇模保持预成型件的口部的状态下，将预成型坯从内部脱离注射模具。 然后，预制件原样转移到吹塑模具。 在预成型件的拉伸吹塑步骤之前，拉伸杆以预定长度下降以在一定程度上预先拉伸主体部分。 在主体部分和口部之间的上部主体部分的连接部分变薄之后，整个主体部分被拉伸吹塑成宽口容器。