Graham Engineering Corporation

Dennis L Dundas

Eugene L Moore

Paul M Oles

Paul W Klinedinst, Sr

Milton Briggs

Kristopher J Ivie

Csaba M Farkas

A vertical rotary blow molding machine with dual cavity molds includes two coextrusion flow heads for extruding multi-layer parisons for capture and blowing in the dual cavity molds.

Dual parison blow molding and method

A blow molding machine and method for blowing sealed aseptic bottles includes a blow pin having separate blow air and exhaust passages. The retracted blow pin is dwelled in a pin housing filled with sterile air. The housing is connected to the pin by two thin rolling diaphragm seals. Sterile air in the chamber maintains the sterility of the sides and end of the blow pin. The separate blown air and exhaust passages maintain sterility of the machine despite possible rupture of a parison or bottle.

Blow molding machine and method

A method for trimming an inner ring from the neck flange of a blow-molded plastic bottle by extending a reverse punch into the bottle through the flange opening, elastically bending the flange into the interior of the bottle as the punch passes and withdrawing the reverse punch from the bottle and trimming a ring from the flange.

Method for trimming the neck of blow molded plastic bottles

An apparatus and method for trimming an inner ring from the neck flange of a blow-molded plastic bottle by extending a reverse punch having a lead end and a trailing end larger than the lead end into the bottle through the flange opening, elastically bending the flange into the interior of the bottle as the punch passes and withdrawing the reverse punch from the bottle and trimming a ring from the flange.

Apparatus for trimming the neck of blow molded plastic bottles and method

An apparatus for trimming a ring from the neck of a blow molded plastic bottle includes a reverse punch for cutting a ring from the neck and positioning the ring on the punch shaft and a ring stripper for cutting one side of the ring on the punch shaft and pulling the other side of ring from the shaft. The ring stripper includes a hook for engaging the ring and pulling the ring against a blade. The blade severs the ring and the hook then strips the severed ring from the shaft for disposal.

A parison is blow molded to form a sealed aseptic bottle for subsequent opening and filling. The pressure of the gas in the interior of the bottle when sealed is sub-atmospheric to prevent distortion of the bottle.

Method of blow molding aseptic bottles

A machine and method for sealing closed an integral neck of blow molded bottle and simultaneously forming an integral twist-off.

Apparatus sealing blow molded bottle

Method for sealing blow molded bottle

Blow molded aseptic bottle and method

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.

Sealed bottle

A blow molding machine having a mold cavity, a blow needle bore opening into the cavity with a blow needle in the bore, a vacuum source for drawing blow air from a molded article and an exhaust passage extending from the blow needle bore to the source for reducing pressure within the blown article.

Blow molding apparatus

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.

Tooling for sealing blow molded bottle

A blow pin assembly for use in blowing aseptic bottles includes a hollow blow needle and a sterile air system for maintaining the sterility of the needle tip.

Growing community of inventors

Dover, PA, United States of America

Dennis L Dundas