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3rd November 2022, 02:03 PM
#1
Floppy parts
Help!
I am running a substrate that gets overmolded with a tpe... the substrate was previously more rigid and now is floppy and flashes easily in the overmold. (The substrate looks like a book end.)
The Substrate material is Lucent PP TPP-0320QU BK2072 , which is a 20% Talc filled Copolymer Propylene, with a UV stabilizer.
I am trying to pinpoint this issue to a material lot change, but not 100% sure as yet,...... in the meantime has anyone seen this as being a possible processing effect?
Thanks,
Joel
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