Abstract: A process and apparatus for the blow molding of oriented, hollow containers from tubular parisons in which a tubing of plastic material at a suitable orientation temperature for the material is passed by a puller assembly to a cutter assembly. The free end of the tubing is grasped by a parison transfer assembly, after which parisons are cut from the tubing by the cutter assembly and positioned by the transfer assembly for placement within blow molders. The first of two blow molders moves toward the tubing centerline from a molding position to receive a parison. The parison transfer assembly is extended vertically to place the parison within the molding cavity of the open blow molder. The upper end of the parison is grasped by a tube clamp, and as the parison transfer assembly retracts, the parison is stretched prior to molder closure. The closed blow molder returns to its molding position to complete the blow molding of a finished, oriented container.

Abstract: A process and apparatus for the blow molding of oriented, hollow containers from tubular parisons in which a tubing of plastic material at a suitable orientation temperature for the material is passed by a puller assembly to a cutter assembly. The free end of the tubing is grasped by a parison transfer assembly, after which parisons are cut from the tubing by the cutter assembly and positioned by the transfer assembly for placement within blow molders. The first of two blow molders moves toward the tubing centerline from a molding position to receive a parison. The parison transfer assembly is extended vertically to place the parison within the molding cavity of the open blow molder. The upper end of the parison is grasped by a tube clamp, and as the parison transfer assembly retracts, the parison is stretched prior to molder closure. The closed blow molder returns to its molding position to complete the blow molding of a finished, oriented container.

Abstract: A process for blow molding completely finished hollow plastic containers of biaxially oriented material and having a finished neck. A dual-diameter blow pin is positioned between separable mold sections and is movable along its longitudinal axis. A crammer sleeve is reciprocably disposed about the blow pin, and gripping jaws are positioned to close around the blow pin. One end of a heated tubular parison is positioned over a larger-diameter portion of the blow pin, and the parison is longitudinally stretched, axially orienting the material and causing the parison to neck down onto a smaller-diameter portion of the blow pin. The mold sections are closed over the stretched parison, the blow pin is longitudinally inserted to size the inside diameter of the neck opening, the crammer sleeve is inserted to cram axially-oriented material into the neck finishing cavity of the mold and to finish form the neck opening, and the tail surplus material is severed.

Abstract: A process and an apparatus for blow molding completely finished hollow plastic containers of biaxially oriented material and having a finished neck. A dual-diameter blow pin is positioned between separable mold sections and is movable along its longitudinal axis. A crammer sleeve is reciprocably disposed about the blow pin, and gripping jaws are positioned to close around the blow pin. One end of a heated tubular parison is positioned over a larger-diameter portion of the blow pin, and the parison is longitudinally stretched, axially orienting the material and causing the parison to neck down onto a smaller-diameter portion of the blow pin. The mold sections are closed over the stretched parison, the blow pin is longitudinally inserted to size the inside diameter of the neck opening, the crammer sleeve is inserted to cram axially-oriented material into the neck finishing cavity of the mold and to finish form the neck opening, and the tail surplus material is severed.