materials for 2 shot moulding

[mickrussell]

Does anyone know of a source of a materials list(generic names) showing the compatibility of materials for two shot injection moulding?

 

[TheAnswerGuy]

Nope!

What I would suggest is that you ask back on this fourm if anyone has ever molded the materials that you are contemplating. There are quite a few highly experienced people that will probably have an answer to your question. Regarding compatability and molding issues.

 

[patprimmer]

Certainly, Polyurethane over Nylon 6 is possible. Bayer published a technical bulletin about it about 15 years ago. Also, vulcanised PP/EPDM (Santoprene) over PP is definitely done.
I expect some other combinations should be possible, these being:-
Other PP elastomers with PP
PBT block co-polymerssuch as Hytrel and Arnitel over PET or PBT.
PU over other nylons.

Regards
pat

 

[PlasticPower]

I have a one sheet chart that shows the compatibility of general plastics. I could scan and email you this chart.

Please let me know, my email is

cmc@empireprecision.com

It would be no problem to send.

Thanks

 

[plasticguy78]

Here is a chart that may help...

http://www.masterprecision.com/pages/2shot/2shotmold5.html

-David Velarde
dvelarde@rainbird.com
626-812-3838