Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Shaping against forming surface
Reexamination Certificate
2008-05-20
2008-05-20
Tentoni, Leo B. (Department: 1791)
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
Shaping against forming surface
C029S428000, C034S380000, C226S001000, C242S570000
Reexamination Certificate
active
10215276
ABSTRACT:
The present invention is a method and apparatus for building three-dimensional models by deposition modeling techniques from moisture-sensitive thermoplastics. A feedstock of thermoplastic modeling material is dried to a low moisture content and supplied to a dispensing head of a modeling apparatus. The dry thermoplastic material is heated in a liquifier and deposited in a predetermined pattern so as to build a three-dimensional model.
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Paper entitled “High Temperature Fused Deposition Modelling: An Experimental Study Focusing on Modelling Materials”, by F.K. Feenstra, from Time-Compression Technologies '98 Conference (Oct. 13-14, 1998, Nottingham, U.K.).
Brose Steve
Hahn Andrew M.
Hopkins Paul E.
Kimm Daniel I.
Pollard David L.
Kinney & Lange , P.A.
Stratasys Inc.
Tentoni Leo B.
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