Manufacturer and supplier of BALTEK balsa core materials, including density-selected balsa, plus AIREX PVC, PET, PEI and fiber-reinforced PU foams, and Lantor nonwoven structural core materials. ISO 9001-registered, with complete technical support and laminate evaluation.

Phone: (336)-398-1900
Fax: (336)-398-1901

Engineer Contact:
Russell Elkin, (336) 398-1881,

Please visit: AIREX/BALTEK

Mailing Address
5240 National Center Dr.
PO Box 16148, High Point, NC 27261
Colfax, NC 27235 US


Welcome to 3A Composites

3A Composites Core Materials, a global organization with operations in Europe, North America, Ecuador and China and is part of 3A Composites, a division of Schweiter Technologies AG.
The branded products AIREX® and BALTEK® have pioneered the sandwich technology for almost 70 years. These core materials are used by fabricators to make innovative lightweight sandwich structures for the wind energy, marine and transportation markets as well as other industrial applications. 3A Composites Core Materials is the global leader in answering the markets’ and users' needs for sustainable, lightweight and resource-friendly materials that enable end products to become lighter and thus be more energy efficient. In the wind energy market, its core materials are key to the growth in the generation of renewable energy.
Schweiter Technologies, a Swiss company with a strong tradition, focuses activities on innovative composite materials and high-quality machine construction. Shares of Schweiter Technologies are listed in the main segment of the SIX Swiss Exchange.

  • Core materials and flow media
    • Balsa
    • Flow media for resin infusion
    • Syntactic core, nonexpanding
    • Other core materials
    • Foam core
      • Foam core, PVC
      • Foam core, polyimide
      • Foam core, polyurethane
      • Foam core, other

Deep Links


As seen in Print
3A Composites wins two Sacha Awards
The Sacha Awards are awarded every two years for projects on best forestry management and processing of legal timber practices in Ecuador.

Composites lighten driving simulator dome
A first for its codevelopers, Pagnotta Engineering Inc. (PEI, Exton, PA, US) and JRL Ventures (Cape Coral, FL, US), this low-mass enclosure spawned a new product venture for the pair in research-oriented driving simulation systems.

3A Composites invests in new US foam extrusion line
Brisk demand and launch of new AIREX T10 product drive capacity increase for extruded AIREX core materials.

The markets: Boatbuilding and marine (2015)
Boatbuilders show strong signs of recovery in the wake of the 2008-2012 recession, with some help from composite materials suppliers who now provide design and subassembly aid.

Destroyer deckhouse roof meets U.S. Navy fire code with phenolic composite
An all-composite deckhouse superstructure, built by Huntington Ingalls Industries (Gulfport, Miss.) cuts topside weight and enables stealth capability by reducing the radar signature of the U.S. Navy’s new, nearly $4 billion (USD) Zumwalt-class destroyer.

New-generation, recyclable PET foam core
3A Composites (Sins, Switzerland), the parent company of Baltek Inc. (Colfax, N.C.) and Sins-based Airex AG unveiled at JEC Europe 2014 what it characterized as a “completely new technology platform” for polyethylene terephthalate (PET) foam core materials, under the tradename AIREX GEN2.

New-generation, recyclable PET foam core
3A Composites unveiled what it characterized as a “completely new technology platform” for polyethylene terephthalate (PET) foam core materials, under the tradename AIREX GEN2.

The markets: Boatbuilding & Marine (2014)
No other composites end-market suffered more recessionary strife than boatbuilding. Yet in 2013, recovery is finally on the way.

IBEX 2013 Show Review
Evidence of a marine industry rebound and a trend toward supplier M&A as the world’s largest boatbuilding trade show looks ahead to smoother sailing … and Tampa.

Core sealant, flow promoter
Core material specialist 3A Composites Core Materials featured on its JEC Europe 2013 stand two products that came on the market in 2012 and, since then, have been fine-tuned.

JEC Europe 2013 review
Snow in Paris slowed traffic to the show floor but did nothing to cool the enthusiasm of composites innovators in a broad range of markets.

JEC Europe 2013 new product showcase
The JEC Europe 2013 trade show (March 12-14, at the Paris Expo, Porte de Versailles, Paris, France) was the venue for introductions of a large number of new composite materials, technologies and manufacturing processes. Here's the CT editorial staff's compilation of what was on display.

SAMPE Europe 2013/JEC Europe 2013 highlights
Held concurrently, these two seminal European composites events weathered a rare Parisian snowstorm to plumb the depth and breadth of the industry.

JEC Europe 2013: Highlights from the show
Despite a rare snowstorm on the first day that kept some attendees and exhibitors away, the JEC Europe 2013 show in Paris March 12-14 offered the usual glimpse at emerging technology and trends in composites.

3A Composites, Dow to develop structural core materials for wind applications
The two companies will cooperate to combine 3A Composites' customized core material solutions with service provided by Dow's wind blade technologies.

Balsa and foam core
3A Composites Core Materials

The structural grid: Prefabrication
Digitally designed and cut, preformed and preinfused stringers and bulkheads reduce boat weight, labor and cycle time and improve boatbuilder process control.

3A Composites Web site now available in five languages
The Cham, Switzerland-headquartered core materials supplier adds Spanish and Portuguese options to its Web site:

3A expands balsa holdings by 20 percent
3A Composites has purchased more land in Ecuador to expand its balsa wood plantations, and invested in additional industrialization.

IBEX 2012 Review
Under the banner “The Future of Marine Technology,” the 22nd International BoatBuilders’ expo confronts a brave new world.