Using Scotchlite glass bubbles from 3M, the MN-based RTP Company can now deliver specialty compounds that can reduce the density of some thermoplastic compounds by as much as 30%, while offering more control than other methods such as foaming.
3M Glass Bubbles are particles engineered to offer an alternative to conventional thermoplastics fillers. The hollow glass micro-spheres aredesigned to reduce part weight, enhance properties and lower part costs.
Manufactured of chemically-stable soda-lime borosilicate glass composition they are non-combustible and non porous, so they do not absorb moisture.
They are also able to produce stable voids, resulting in parts with low thermal conductivity and low dielectric constants.
Compounds containing the 3M Scotchlite glass bubbles are available in most resins and adapt easily to most production processes including injection molding and extrusion.