发明授权
- 专利标题: Method of making a refillable polyester container
- 专利标题(中): 制造可再填充聚酯容器的方法
-
申请号: US312890申请日: 1994-09-27
-
公开(公告)号: US5599496A公开(公告)日: 1997-02-04
- 发明人: Suppayan M. Krishnakumar , Wayne N. Collette , Thomas E. Nahill
- 申请人: Suppayan M. Krishnakumar , Wayne N. Collette , Thomas E. Nahill
- 申请人地址: KY Florence
- 专利权人: Continental PET Technologies, Inc.
- 当前专利权人: Continental PET Technologies, Inc.
- 当前专利权人地址: KY Florence
- 主分类号: B65D1/02
- IPC分类号: B65D1/02 ; B29C49/00 ; B29C49/04 ; B29C49/06 ; B29C49/08
摘要:
Method of making a refillable polyester container having a low orientation base with improved resistance to caustic wash cracking. The method includes providing a preform with an upper base-forming thickened portion which resists axial elongation (thereby increasing the orientation of the body) and a lower base-forming tapered portion which decreases in thickness so as to gradually reduce the wall thickness of a central dome in the container base. The bottom of the preform base includes a central thickened region which is maintained in a recess during blowing to insure centering and prevent the formation of stress concentrations.