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Closed Molding
The closed-mold process not only
reduces emissions but optimizes the glass-resin ratio,
producing a higher quality laminate. Vacuum bagging
and resin infusion are two closed-mold techniques.
Fiber
Reinforced Plastics Shop Implements Light RTM to Produce
Parts Phoenix Industries converted 60 percent of
its molded part production to closed molding. The company
reduced 80,000 pounds of styrene emissions over two
years. 20,000 of this was due to the use of Light RTM
technology.
Larson
Boats, 1999 Governor's Award Winner Larson Boats
developed a closed molding technology for producing
their boat decks, significantly reducing the amount
of styrene emitted to the air.
Reducing
Volatile Emissions in the Fiber Reinforced Plastics
Industry Most FRP processing facilities are
major sources of volatile emissions. Their emissions
include styrene, the volatile component of polyester
resin and gelcoat; and acetone, a solvent used to clean
tools and other surfaces contaminated with resin. This
fact sheet discusses opportunities for reducing these
emissions. See the sections on vacuum bagging and resin
infusion.
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