The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 15, 1991
Filed:
Jun. 01, 1990
Imrich Klein, Highland Park, NJ (US);
Scientific Process & Research, Inc., Somerset, NJ (US);
Abstract
Apparatus and method for use in a plasticating extruder of the type having an axially extending elongate barrel for preparing a plasticated material from solids introduced into the extruder wherein an axially extending screw conveyor continuously conveys material in a downstream direction as the material is melted within a channel in the screw conveyor, the channel extending between a leading face and a trailing face on a flight of the screw conveyor such that a solid bed of material is established and melting takes place to form melted material within a relatively thin melt film established between the solid bed and the barrel, the melted material passing progressively from the melt filn into a melt pool formed at the leading face of the flight, and melted material is transferred within a conduit in the screw conveyor from the melt pool to the solid bed, whereby the transferred melted material is forced into intimate contact with unmelted material in the solid bed to heat the unmelted material and accelerate melting.