Patents Assigned to Western Container Corporation - Justia Patents Search

Patents Assigned to Western Container Corporation

Improved method for transfer of molding material in two stage injection molding units during molding of preforms

Patent number: 5281384

Abstract: An improved method for injection molding including the steps of plasticizing a shot of molding material with the extruder running at a high rpm, transferring the shot to an accumulator means with the extruder running at a low rpm, and injecting the shot into a mold cavity.

Type: Grant

Filed: June 15, 1992

Date of Patent: January 25, 1994

Assignee: Western Container Corporation

Inventor: William C. Banks