Abstract:
A multilayered container and a process for forming the same are disclosed. The container includes a support wall formed from a plastic having an undesirable substance therein and polymerized to a level less than that necessary to prevent the undesirable substance from migrating from the plastic into the contents when the contents are in contact with the support wall. A protective wall is provided adjacent the support wall and adapted to be positioned between the support wall and the contents. The protective wall is formed from a material which limits the migration of undesirable substance from the support wall into the contents.
Abstract:
A multilayered, hollow plastic container having an inner and outer molded portion of thermoplastic material. The container has a bottom wall, a peripheral side wall extending vertically upward from the bottom wall and terminating at its upper end in a mouth, with the bottom wall being originally separate from the side wall.
Abstract:
MOLDING APPARATUS INCLUDING A BLOW MOLD CONTAINING A HOLLOW BLOWN ARTICLE HAVING AN OPEN NECK PORTION AND A TRANSFER DEVICE TO BE INDEXED SUCCESSIVELY INTO REGISTRATION WITH THE BLOW MOLD. THE TRANSFER DEVICE IS BROUGHT INTO ENGAGEMENT WITH THE OPEN NECK OF THE ARTICLE. FLUID PRESSURE IS SUPPLIED THROUGH THE TRANSFER DEVICE FOR GRIPPING THE NECK OF THE ARTICLE AND TO APPLY FLUID PRESSURE TO THE INTERIOR OF THE ARTICLE. THE BLOW MOLD IS OPENED TO RELEASE THE ARTICLE AND THE DEVICE IS ADVANCED TO EXTRACT THE ARTICLE AND CARRY IT TO A DISCHARGE STATION WHILE MAINTAINING INTERNAL FLUID PRESSURE DURING THE COOLING STEP. AT THE DISCHARGE STATION THE FLUID PRESSURE IS REDUCED TO ALLOW THE TRANSFER DEVICE TO RELEASE THE ARTICLE.