- Reduce part weight
- Improve dimensional stability
- Differentiate resin formulations
- Improve processing throughput
These additives are 40 percent stronger than 3Ms previous leading high strength glass bubbles and, at 17 microns, are approximately half their size. 3M™ Glass Bubbles iM30K have a density of 0.6 g/cc and an isostatic crush strength of 30,000 psi.