| 摘要 |
The invention is a process for biaxially blow molding hollow plastic articles to provide a finished neck of axially oriented material in the molding step. One end of a plastic parison is placed over a blow pin positioned between separable mold halves. The parison is then axially oriented and necked down over said blow pin. A crammer sleeve is positioned over the blow pin to cram axially oriented material into the neck finishing cavities when the molds are closed over said blow pin and parison. |
