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Date Posted: 05/26/04 16:20:55
Author: fabio pisoni
Subject: increase shellac finishing melting point

I follow a production line of colonial style furniture in south east asia. We use shellac finishing applied by brush. Unfortunately, upon arrival our customers find that wrapping and conditioning ( plastic bubble film, cardboard, oily paper, we tried them all!) often sticks to the surface of the pieces.
Initially we thought we didn't allow the shellac coats to dry long enough, but the problem persisted even on pieces that were in our stock for several months. After some investigations, we realized that the shellac actually softened /melted no matter how dry it was, due to the extremely high temperature inside the container (it can sometimes reach 80C).
Now, I wonder whether it's possible to increase the melting point of shellac by adding a percentage of some other product ( copal for instance, or else). I add, for example, carnauba wax to beeswax to increase the melting point of my wax. Would it be possible to do the same kind of thing with shellac? Thank you in advance for your kind reply.

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