[NTLK] Looking for experts on glueing or welding polyprophylen (PP)

NewtonTalk newtontalk at pda-soft.de
Sun Jan 14 18:51:38 EST 2018


Yes, this is Newton related, but you won't get your hands on the result
before I am completely satisfied with it. Which currently I am pretty far
from being.

I am trying to glue two flat polyprophylen parts together. I make them from
binders like these:

   <https://preview.tinyurl.com/y9u62jdo>

These sheets aren't completely smooth, which I think is a good thing because
there's more surface the glue can cling to. But maybe I'm mistaken here.

Unfortunately, so far everything I tried did not work. I tried super glue
(cyanoacrylate), UHU, and Pattex. The next day I could still separate both
as if they had been glued with saliva. Especially when I flexed them. I have
learned by now that polyprophylen has a very low surface tension, which
makes it difficult to glue. This appears to be correct. 

:-((

If anyone on this list happens to have knowledge on how to glue this
material, please oh please chime in. Or might there be a chance of
connecting those parts using heat, like that from an electric iron? Of
course, I could try this out, but I am afraid that the connection might only
SEEM to be OK and turn out to be flaky over time.

I also considered using double-sided sticky tape, but I did not find one
that is thin enough. It should not be thicker than what a thin layer of
super glue would account for (about 0.05mm or so I think).

If you think I am on the wrong track to begin with: Do you know a material
that is really easy to glue and available in sheets about 0.2 ... 0.3
millimeters strong?

Thanks

Frank

-- Newton software and hardware at http://www.pda-soft.de





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