RIBEIRO, A.S., HOPKINSON, N. and AHRENS, C.H., 2004. Thermal effects on stereolithography tools during injection moulding. Rapid prototyping journal, 10 (3), pp. 176-180 [DOI: 10.1108/13552540410538996]
In this work the changes to stereolithography (SL) resin mechanical properties during
the injection moulding process were evaluated. A multi-impression SL mould was
built and used to inject a series of small flat mouldings. The fixed half SL tool insert
included recesses to accommodate tensile test specimens. Tensile test specimens
made from SL resin were positioned in these recesses and plastic parts were injected.
After injecting a predetermined number of mouldings, tensile tests were performed
using the tensile test specimens. The results from the tensile tests showed that the
thermal cycling encountered during the injection moulding process did not
significantly affect the mechanical properties of the resin. Observations indicated that
reducing the temperatures encountered in the tool may lead to longer tool life.