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Proceedings Paper

Routes to plastic models and prototypes using the SLS selective laser sintering process
Author(s): Sandra Seitz; Simon van de Crommert; Klaus K. Esser; Kevin McAlea
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Paper Abstract

Complex three dimensional parts can be manufactured directly from CAD data using the SLSR selective laser sintering process. In addition to the currently used nylon materials, two new materials have been developed for the production of functional models. From an elastomeric polymer, commercially available as Somos 201, highly flexible, rubber-like parts can be produced directly in the sinterstation system. Also, a new product for producing stiff functional prototypes will be introduced in July, commercially available as VeriForm polymer. Its surface quality and detail definition is superior to the currently used nylon materials while the mechanical properties could be kept at the same level. Comparative data of VeriForm and the nylon materials are presented. For the production of real technical prototypes injection moulding inserts can be produced by the RapidTool process that can be employed for the production of up to 80,000 parts depending on the injected material and part geometry. By changes in the chemical composition and by new processing parameters, the average cycle time could be reduced from 4 to 5 days down to 2 to 3 days.

Paper Details

Date Published: 25 September 1997
PDF: 6 pages
Proc. SPIE 3102, Rapid Prototyping and Flexible Manufacturing, (25 September 1997); doi: 10.1117/12.281307
Show Author Affiliations
Sandra Seitz, DTM GmbH (Germany)
Simon van de Crommert, DTM GmbH (Germany)
Klaus K. Esser, DTM GmbH (Germany)
Kevin McAlea, DTM Corp. (United States)

Published in SPIE Proceedings Vol. 3102:
Rapid Prototyping and Flexible Manufacturing
Rolf-Juergen Ahlers; Gunther Reinhart, Editor(s)

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