Johns Manville Introduces Thermoflow® 600+ for PBT/PET

Johns Manville (JM), a market-leading manufacturer of continuous filament glass fiber and a Berkshire Hathaway company, announced today the introduction of a new chopped strand called ThermoFlow® 600+ for PBT/PET reinforcement.

ThermoFlow® 600+ Chopped Strands are designed to provide superior as-molded mechanical performance in PBT/PET as well as improved flow performance for complex shapes used in electronics. The improved color performance after aging also enables compounders to increase the use of PBT engineered thermoplastics in consumer applications.

The product will be introduced this week at the FAKUMA 2017 Show in Friedrichshafen, Germany. The JM booth is at Hall B4-4304.

"JM continues to bring new products to market in engineered and structural thermoplastic composites to serve our customers," said Jared Cox, Global Chopped Strands Product Manager for Engineered Products - Fibers. "ThermoFlow® 600+ was developed in close cooperation with compounders and builds on JM’s 50 years of reinforcement expertise in Europe."

About Johns Manville
Johns Manville, a Berkshire Hathaway company (NYSE: BRK.A, BRK.B), is a leading manufacturer and marketer of premium-quality products for building insulation, mechanical insulation, commercial roofing, and roof insulation, as well as fibers and nonwovens for commercial, industrial and residential applications. JM serves markets that include aerospace, automotive and transportation, air handling, appliance, HVAC, pipe and equipment, filtration, waterproofing, building, flooring, interiors and wind energy. In business since 1858, the Denver-based company has annual sales of approximately $3 billion and holds leadership positions in all of the key markets that it serves. JM employs approximately 7,000 people and operates 43 manufacturing facilities in North America, Europe and China. Additional information can be found at

Philippe Bekaert, Johns Manville +32 479 980 677