Patent ID: 9108354
Filing Date: 2015-08-18
Classification: B29B,B29C

Abstract:
1. A method for removing gas from material fed through an extruder, said method comprising: providing a material; providing an extruder; feeding said material into an entrance of said extruder; providing a first auger rotatably positioned in a first barrel; providing a second auger rotatably positioned in a second barrel; providing a vent block, said vent block including a vent cavity having a feed end and an exit end, an inner feed ring that partially extends into said vent cavity at said feed end of said vent cavity, and a screw element rotatably positioned in said vent cavity, a first end of said screw element connected to or interconnected to said first auger, a second end of said screw element connected to or interconnected to said second auger, at least a majority of said vent cavity formed by an outer ring, a front portion of said outer ring having a cross-sectional size that is greater than a cross-sectional size of a front end of said inner feed ring, at least a portion of a front end of said outer ring is longitudinally aligned with or overlapping said front end of said inner feed ring, said outer ring forming at least one gap or opening at or adjacent said feed end of said vent cavity; rotating said first auger to cause said material to be fed from said entrance of said extruder to said vent block; and, creating a vacuum on said vent block to cause a vacuum to be pulled on said vent cavity as said material is moved though said vent cavity from said feed end to said exit end by said screw element.