top sheet not bonding properly

olie25 · Post by **olie25** » Fri Jan 13, 2012 11:02 pm

just pulled my first board out of the press, everything went good... except for the top sheet. We are using iso sport nylon (sublimated), where did we go wrong? not enough resin? heat was off? ( we heat from bottom only). is there any special bonding pretreatment need? how much does it not being clean actually affect it? I think we were pretty cleaned up (maybe not enough). any tips words of wisdom would be rad!!

thanks

MontuckyMadman · Post by **MontuckyMadman** » Sat Jan 14, 2012 4:13 pm

Is the back of the topsheet a felty material like the pbt or is it just an abraded surface?
you may have needed to flame treat if it was just an abraded surface but not sure how the ntlon material would like this. The material should be as clean as possible. How bad was the delam? Pics?

olie25 · Post by **olie25** » Sat Jan 14, 2012 10:55 pm

wish i took some pics, but were talking 50% didnt bond properly if was f*#ked. it kinda threw me off a bit cuz the rest of it went pretty good.

MontuckyMadman · Post by **MontuckyMadman** » Sat Jan 14, 2012 11:42 pm

Where did u have this sublimated at miller studio?

olie25 · Post by **olie25** » Sun Jan 15, 2012 12:35 am

ya it was miller that did it

olie25 · Post by **olie25** » Sun Jan 15, 2012 12:36 am

i guess if all else ill call them but i was hoping to press again tomorrow if i got any good feedback

OnDeck · Post by **OnDeck** » Mon Jan 16, 2012 8:11 am

Are you sure you had the epoxy/hardener mix correct? if you have a short pot life and are mixing in multiple batches, and screwed up the last batch, then that might explain it.

I got burned on this a while back after getting lazy and mixing by volume instead of weight. Now I'm back to weighing the epoxy and hardener mix to the gram.

olie25 · Post by **olie25** » Sat Jan 28, 2012 11:17 pm

I press up another one, flamed and cleaned better, changed the heat a little and everything went great. the nylon looks and works great so far.

ggardner90 · Post by **ggardner90** » Sun Jan 29, 2012 4:02 pm

so it is okay to flame treat the sublimated material from miller studio. i was going to post something about it because i was not totally sure

MontuckyMadman · Post by **MontuckyMadman** » Sun Jan 29, 2012 4:58 pm

vince says its flame treated but that can wear off as we know. I just did a test on this material an the half I flame treated bonded better than the other half that came straight from the roll.
Its thin, so fast passes with the torch.

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top sheet not bonding properly

top sheet not bonding properly