Saturday, May 28, 2022

polymer finishing


Friends, this may seem a very basic query but if I had the answer, I

wouldn’t be asking.

When I’m heating a sheet of polypropylene or PE for any drape and vacuum

moulding, the sheet invariably ends up with air pockets between it and

the teflon oven sheet I use. Of course these air bubbles then translate

to the outside surface of the finished orthosis as lines on the finish.

This is a minor detail but one that would/should obviously be better

done without in terms of professional finish. What am I missing? What

have I forgotten from school? Please teach this shamefaced P & O.

Richard (woollyhead) Ziegeler P&O, O.T.

[email protected]


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