Abstract: A blow molding apparatus including a pair of mold halves, a sealing blade mounted in one mold half and extendable into the mold cavity to seal the blown bottle, a drive member and an angled force multiplying drive connecting the drive member and blade is used in a method to produce a molded sealed bottle.

Abstract: A modular extrusion head is disclosed including a plurality of cross head die modules, each including a flow path for a single resin. Molten resin layers are flowed from the modules onto a stepped mandrel and then along the mandrel and out an extrusion die to form a multi-layer parison. The layers are thin, with a uniform thickness and hole free. The modules are temperature zoned to permit flowing of a low temperature resin to and along the mandrel in contact with a high temperature resin without impairing the properties of the low temperature resin.

Abstract: Blow molding apparatus including a pair of mold halves, a sealing blade mounted in one mold half and extendable into the mold cavity to seal the blown bottle, a drive member and an angled force multiplying drive connecting the drive member and blade.

Abstract: A method of fabricating a multi-layered parison having adjacent layers of different polymeric resins with incompatible melt flow temperatures without degrading the polymeric resin having the lower melt flow temperature.

Abstract: A hand held blow molded plastic bottle having a vent passage extending along the interior of the bottle shoulder from the top of the body to the bottom of the neck. During pouring, air flows through the vent passage to a vacuum produced pocket in the bottle and liquid flows from the bottle in a continuous, controllable and rapidly laminar stream.

Abstract: A modular extrusion head is disclosed including a plurality of cross head die modules, each including a flow path for a single resin. Molten resin layers are flowed from the modules onto a stepped mandrel and then along the mandrel and out an extrusion die to form a multi-layer parison. The layers are thin, with a uniform thickness and hole free. The modules are temperature zoned to permit flowing of a low temperature resin to and along the mandrel in contact with a high temperature resin without impairing the properties of the low temperature resin.

Abstract: A cross head die for extruding an annular layer of thermoplastic resin on a mandril includes a resin flow path having an inlet, a cardioid shaped primary distribution channel, a gate passage, an equilibration chamber and a transfer channel surrounding the mandril and a mouth at the downstream end of the transfer channel opening into a resin extrusion channel surrounding the mandrel.