| 摘要 |
A method and apparatus for finishing a blow molded plastic article having flash attached to a neck portion thereof which includes gripping and relatively moving the flash and the article away from each other to sever the flash at a portion immediately adjacent the end of the neck which is at an elevated temperature with respect to the neck portion, and thereafter advancing a forming mandrel into the neck to roll an irregular edge left in the area of flash severance forwardly toward the body of the article and outwardly against the wall of the neck to form a smooth finish. The apparatus includes an inwardly directed step in the blow mold at the extremity of the neck defining portion of the mold whereat a thickened and therefore elevated temperature portion of the plastic is formed on expanding the parison, this thickened section being the area where severing occurs during finishing. |
