Core Materials

Core Materials are used in: Aerospace, Marine, Transportation, Wind Energy / Power

Core materials with composites skins create a “sandwich” structure laminate with high stiffness and low weight.

Core materials are produced in a variety of forms including end-grain balsa wood, PVC foam, urethane foam, non-woven core fabrics, and various types of honeycomb materials. These lightweight materials are bonded between two composite skins and serve as the central member of what is referred to as “a sandwich structure”. The introduction of a core in a laminate increases the section modulus, resulting in significant increases in stiffness and the ability to create lightweight structures. Sandwich structures produce a continuous I-beam like effect where the composite skins carry the load and the core material maintains the orientation of the skins. Core materials are widely used to produce strong, stiff and lightweight structures for high performance products.

core materials used in boating
core materials used in recreational vehicle
Core Materials used in Wind Blade

Featured Suppliers

Scott Bader

Established in 1921, Scott Bader continues to be a global leader in the manufacturing of Composites, Adhesives and Speciality Polymers, offering a full range of technologies and manufacturing capabilities.

3A Composites AirexBaltek

The global leader in sustainable, lightweight, resource-friendly materials for the production of lighter, more energy efficient products.


The leading global supplier of composite materials, engineering services, tooling equipment, and select parts and systems.

DIAB Group

Your partner in sandwich technology, offering the most efficient solutions for products needing to be light, strong and competitive.


  • Advanced Honeycomb Technologies
  • Composite Panel Solutions
  • CoreLite Composites
  • Elliott Company of Indianapolis
  • General Plastics Manufacturing Co.
  • Hexacomb Corporation
  • I-Core Composites, LLC
  • Lantor
  • Polyumac, Inc.
  • Space Age Synthetics, Inc.

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