BYK-GARDNER USA — The maker of color-measuring instruments in Columbia, Md., named Rae Roby regional sales manager for Michigan and northern Ohio, and Sam Cauchi sales manager for Canada.
CERTAINTEED CORP. — The building products profile extruder in Valley Forge, Pa., named Tom Smith president of roofing operations and Mark Rayfield president of its siding products group.
CROSSLINK TECHNICAL CONSULTING LTD. — Neil Witten is director of the new polymer-foam consulting firm he formed in Surrey, England.
DOW CHEMICAL CO. — The resin maker in Midland, Mich., named Matt Davis vice president of global government affairs and public affairs.
ELEVANCE RENEWABLE SCIENCES INC. — The specialty chemicals maker in Bolingbrook, Ill., named David Kelsey chief financial officer.
EXOPACK LLC — Cory VanLoocke, corporate innovation manager for the film maker in Spartanburg, S.C., was named to the Michigan State University Alumni Association board of directors.
FLAMBEAU INC. — The injection and blow molder in Baraboo, Wis., named Butch Greenwood operations manager for its Baraboo blow molding facility, succeeding Dave Harris, who retired.
GLOUCESTER ENGINEERING CO. INC. — The extruder maker in Gloucester, Mass., named Jon Bourne territory service manager for Europe, Middle East and Africa.
HOOVER MATERIALS HANDLING GROUP — The Houston manufacturer of intermediate bulk containers named Bill Wright plant manager.
KENDALL PACKAGING CORP. — The flexible packaging maker in Mequon, Wis., named David Wiseley area sales manager.
MICHIGAN ROLL FORM INC. — The downstream equipment maker in Fraser, Mich., named Greg Peterson manager of vinyl products.
PLASTICS COLOR CORP. — The manufacturer of masterbatches and custom colorants in Calumet City, Ill., named Timothy Workman vice president of business development and Fred Jhaveri global technology manager.
RADIANT ENERGY SYSTEMS INC. — The manufacturer of infrared heaters, hot-air ovens and fume oxidizers in Hawthorne, N.J., named Stephen Miggels project engineer.
SMITH METAL PRODUCTS — The metal and ceramic injection molder in Lindstrom, Minn., named Mike Brown head of its new West Coast sales and engineering office in Los Angeles. SMP is a division of Plastic Products Co. Inc.
SNIDER MOLD CO. INC. — The compression mold supplier in Mequon, Wis., named Chris Cole national accounts manager.
TEKNOR APEX CO. — The custom PVC compounds maker in Pawtucket, R.I., named Nick Sandland marketing and sales director for the Americas and Elizabeth Ponte marketing manager for the Americas, both in its thermoplastic elastomers division.
TIPTON DESIGN AND ENGINEERING INC. — The provider of materials engineering services in Solon, Ohio, named Troy Hatcher a project engineer.
VCF FILMS INC. — The maker of thin polymer films and coatings in Howell, Mich., named Jean-Christophe Brouet a technical sales engineer.
VECOPLAN LLC — The shredding and recycling equipment maker in High Point, N.C., named Ron Carter an electrical engineer and Matthew Davidson a product engineer.
WELEX INC. — The sheet extrusion equipment maker in Blue Bell, Pa., named Gina Haines vice president and chief marketing officer.
WIN PLASTIC EXTRUSIONS LLC — The extruder in Cuyahoga Falls, Ohio, named Bill Habeck Eastern regional sales and new business development manager.