3M Opens ‘Glass Bubbles’ Facility

3M says it has opened a facility for manufacturing its “glass bubbles” microspheres, used as filler in deep sea oil and gas drilling, at Ribeirão, near São Paulo. The glass microspheres are used as a lightweight ultra high-strength filler in as pipe insulation, drilling fluids and cementing operations. The plant is located about 200 miles northeast of São Paulo and is in response to increasing demand in the region, 3M says. Other end markets include the aerospace and automotive sectors. Brazil is 3M’s fourth country for the glass bubbles, after the U.S...

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