Smooth-On

Smooth-On, Inc. is a chemical manufacturing company based in Macungie, Pennsylvania that produces polyurethanes, silicone rubbers, and epoxy resins which are distributed to a global market.
Overview
Smooth-On, Inc. is a privately owned US-based manufacturer of liquid rubbers, plastics, adhesives, and expanding foams. These materials are commonly used for mold making, resin casting, composite manufacturing, and industrial repair.
History
Smooth-On, Inc. was founded in 1895 by Vreeland Tompkins in Jersey City, New Jersey (then as Smooth-On Manufacturing Company). In 1895 Tompkins devised a powder compound that when mixed with water could be used to repair cracks and holes in iron. Marketed as Iron Cement, later iterations were formulated with solvents that would evaporate when heated or exposed to air.
In the 1950's Smooth-On pivoted to production of epoxy resins and polysulfides to address the decline in iron and rise in plastics for industrial manufacturing. It relocated its manufacturing facilities to a larger site in Gillette, New Jersey in 1967 to increase production capacity. In the 1970's Smooth-On began formulating polyurethane rubbers and plastics.
In 1997 manufacturing was moved to Easton, Pennsylvania and in 2014 to Macungie, Pennsylvania.
* 2016: Smooth-On acquired Buddy Rhodes Concrete Products, a manufacturer of concrete bag mixes and admixtures.
* 2019: Smooth-On acquired Accu-Cast (a producer of alginates) and Holden’s Latex (a latex supplier).
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