What can I do when Dyna–Purge is too stiff to be displaced with the next resin?
While Dyna–Purge is often stiffer than the resident resin, it is also formulated to be “post purged” with ease. However, if the next production resin has a very high melt flow (i.e. 30 G) the material might not be able to adequately displace Dyna–Purge, since the higher melt resin will flow over Dyna–Purge rather than displace it. We suggest “bridging” the melt flow difference by blending the Dyna–Purge, at a 50/50 ratio, with a higher melt resin. The higher melt resin becomes the carrier system for Dyna–Purge and makes it easier to displace the Dyna–Purge and transition to the next production resin. Another solution might be using a different grade of Dyna–Purge, with a carrier system that flows easier.
