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July, 2002
For Immediate Release
New 3M Low-Density Filler Survives Tough Injection Molding and Extrusion Processes
High-Strength Glass Bubbles Allow Higher Loading, Lower Part Density,
Reduced Warpage and Shrinkage, and Increased Yield
London, Ontario - 3M Specialty Materials have introduced 3M™ Scotchlite™ Glass Bubbles S60/18000,
high-strength glass microspheres used in injection molded and extruded thermoplastics applications. With an isostatic crush
strength of more than 18,000 psi, Scotchlite glass bubbles S60/18000 are strong enough to survive injection molding processes
with the highest performing engineered thermoplastics.
These hollow glass microspheres are specially formulated with a high strength-to-weight ratio. Their spherical
shape allows for a higher loading than conventional fillers and with less of an impact on viscosity. Even at loading
percentages approaching 50 percent, very little glass bubble breakage occurs, meaning that manufacturers have a high
probability of producing the desired part, accurately and consistently. This makes Scotchlite glass bubbles S60/18000 an
especially useful additive for automotive, truck and aerospace components.
"The ability to manufacture a consistent part is extremely important in the injection molding and plastic
compounding industries," said Ken Symns business manager at 3M Canada. "Compounders and formulators want zero-defect parts
and that's where these glass bubbles can help. Because S60/18000 glass bubbles are unique, high-strength, hollow glass
spheres they help improve dimensional stability, lower part weight and in some cases reduce noise, vibration and harmonics.
Plus, parts made with S60/18000 glass bubbles are less susceptible to shrinking or warping so they actually help injection
molders increase yield by meeting part tolerances more consistently and reducing waste."
Scotchlite glass bubbles S60/18000 are made of a chemically stable soda-lime-borosilicate glass. Essentially,
they are hollow spheres at one-third atmospheric pressure, surrounded by an exceptionally strong shell of glass. Virtually
inert, they are compatible with most polymers and provide good temperature and chemical resistance. They mix easily and are
ideal for use with most batch-mixing equipment.
Scotchlite glass bubbles S60/18000 are available and supported globally. For more information about
3M™ Scotchlite™ Glass Bubbles S60/18000, please call 800-365-3577.
Contact 3M Canada PR department.
3M and Scotchlite are trademarks of 3M. Used under license in Canada.
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