초록 ▼

With the view to obviating or mitigating the disadvantages that in processes for the production of containers, for example, product-filled containers, in which processes a substantial proportion of scrap is produced and that the space occupied by a purality of the containers prior to the product-fil

With the view to obviating or mitigating the disadvantages that in processes for the production of containers, for example, product-filled containers, in which processes a substantial proportion of scrap is produced and that the space occupied by a purality of the containers prior to the product-filling thereof is considerable even if the containers are disposed in stacked relationship, there is provided a process for manufacturing a rimmed container preparatory to the filling and closing thereof from a one piece homogeneous blank, composed entirely of heat formable material containing just the requisite amount of material for forming the rimmed container to be filled, filling rim and an apparatus for performing the process, wherein the process includes the steps of uniformly heating a substantially rigid planar preshaped homogeneous blank of thermo plastic material, out to at least immediately adjacent the portion thereof adapted to form the container rim to a formable state while leaving the outermost periphery portion of the rim rigid, then while holding said rigid outermost peripheral blank portion forming the heated blank portion into a cavity, to produce a container. The invention further involves the heating of the blank to a sterilizing temperature to produce an aseptic container and subsequently filling the container e.g. with a food stuff, and closing same.

대표청구항 ▼

A process of forming an individual rimmed plastic container preparatory to the filling and closing thereof from a relatively stiff resilient blank formed entirely of heat formable material which is essentially rigid at normal ambient temperatures, comprising the steps of fixing the peripheral portio

A process of forming an individual rimmed plastic container preparatory to the filling and closing thereof from a relatively stiff resilient blank formed entirely of heat formable material which is essentially rigid at normal ambient temperatures, comprising the steps of fixing the peripheral portion of the blank while leaving the major central portion thereof unsupported, heating said main central portion out to said fixed peripheral portion to a formable temperature while leaving said fixed peripheral portion at a temperature at which it remains rigid to constitute a rigid rim portion and, while holding a heated portion of the blank immediately adjacent to said fixed peripheral portion substantially in the plane of said fixed peripheral portion, forming said heated main central portion into a cavity of substantial depth, said heated portion immediately adjacent to said fixed peripheral portion constituting a reservoir of formable material from which material is necked down into the cavity to preclude any discontinuity occurring between said fixed peripheral portion and the cavity wall during the cavity forming operation.