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:
Jan. 02, 2007
Filed:
Jul. 22, 2004
Timothy W. Womer, Edinburg, PA (US);
Walter S. Smith, New Castle, PA (US);
Timothy W. Womer, Edinburg, PA (US);
Walter S. Smith, New Castle, PA (US);
Xaloy, Inc., New Castle, PA (US);
Abstract
Apparatus according to this invention for plasticating a resin polymer, especially polypropylene, includes a barrel having an inlet, outlet, and inner surface. A screw, located within and closely spaced from the inner surface of the barrel, has a longitudinal axis extending from the inlet toward the outlet, and includes length sections arranged in a series along the axis. The screw includes a core and a main flight located on and projecting radially from the core, extending in a helix along the axis, and having a push side and a trailing side. The screw sections include a feed section, a transition section following the feed section, a metering section following the transition section, and a barrier melting section following the metering section.