Polymer Processing Society
www.tpps.org
An international association of university professors, researchers and polymer processing engineers.

Society of Plastics Engineers
http://www.4spe.org
The world's largest association of plastics professionals.

CPIA
http://www.plastics.ca
Canadian Plastics Industry Association Home Page

European Patent Office
www.epo.org
Free access to more than 70 million patent documents worldwide

Cooling Simulation, Extrusion Know-How and more 
www.shs-plus.com

Free patents online
www.freepatentsonline.com
Millions of free patent documents

CAMPUS
www.campusplastics.com
A material information system for the plastics industry

Moldflow
http://www.moldflow.com
Injection molding software