Apparatus for forming non-nestable containers

DETAILED DESCRIPTION Molding operations for fabricating reduced or small necked plastic bottles, containers and the like have built upon the experiences of the glass blowing art where liquid melted glass in the shape of a parison is injected or introduced into a split mold cavity having a configuration of the ultimate article to be formed, the parison then being subjected to air pressure, through a tube, needle or the like to expand the parison against the inner wall of the split mold cavity.
After being cooled against the inner wall of the mold cavity, the final article may then be removed upon opening of the split mold cavity.
In the present state of the art of blow molding disposable plastic bottles or containers having small or reduced necks, there are several ways in which the material is introduced into a mold cavity.
In addition to depositing an unshaped parison into the mold cavity, the prior art has included the introduction of a partially shaped parison, the insertion of an extruded tube, and in some instances, a preformed or preshaped article is deposited in the mold cavity.
The present invention is directed to the type of reshaping operation where a nestable container, suitable for shipping and storage purposes, is introduced into a mold cavity having a non-nestable inner wall configuration, and the nestable container is subsequently reshaped by differential fluid pressure into a non-nestable container product.
It is well known that blow molding operations inherently involve numerous problems in the manufacture of bottles, containers and the like.
Flash is frequently formed about the outside surface of the neck portion and outer walls of the bottle or the container due to the pressing of excess material in the seam areas of the split mold when the parison or extruded tubing is reshaped.
In some cases, flash has been removed by automatic deburring equipment prior to the removal of the bottle from the mold to avoid expensive, time-consuming operations normally associated with hand labor