Talk Composites - The Forum for Advanced Composites

Polypropylene sheet as mould material

http://www.talkcomposites.com/Topic10510.aspx

By flooddylan - 3/26/2014 3:28:36 PM

Hi,

Do you foresee problems if I use a sheet of polypropylene (smooth, no texture) as surface for wet-lay sheets approx 1.2 x 1m?

I have been told glass is ideal for this (thank you Wozza!) but I want to create a shallow curve in the sheet.

I can test on a smaller scale but I'm not sure what might happen on this larger scale regarding release, reactions and warping?

Many thanks for your advice.
By Warren (Staff) - 3/31/2014 11:44:45 AM

You dont need to as such.  For good cosmetic finish sheets i would avoid it as any flaw or uneveness in the release coat application may show up on the sheet.