Core Materials for Composites
Composite core materials serve as the central structural component in composite structures, providing stability, strength, and support while often contributing to the overall lightweight nature of the final product. These cores, typically made of materials like foam, honeycomb structures, or balsa wood, are sandwiched between layers of composite skins to form a composite panel. Their inherent properties—such as high strength-to-weight ratios, excellent insulation, and impact resistance—make them integral in various industries, including marine, aerospace, and construction, where weight reduction and structural integrity are paramount. The choice of core material plays a crucial role in determining the performance and characteristics of the composite structure.

Latest Core Articles
VIEW ALLAirbus to design, build ESA ExoMars rover lander platform
The resurrected Rosalind Franklin composite rover mission’s key systems will be upgraded with support from the TAS, ESA and NASA for a planned launch in 2028.
Read MoreNorco delivers GFRP hard hulled riverine craft for BAE Systems
Norco’s broad-ranging materials and manufacturing expertise revitalize UK MOD legacy craft, providing a solution for future defense and communications sector projects.
Read MorePVC foam core combines reliability with environmental sustainability
JEC World 2025: Maricell will have its own branded booth to present three new MYcell products targeting various sector requirements and sustainability initiatives.
Read MoreComposite, adhesive and core solutions focus on performance, reducing carbon footprint
JEC World 2025: Gurit celebrates 190 years with a display of its product variety — from Spabond 400, resins, prepregs and Gurit PET to BalsaFlex, Opticore and other core systems.
Read MoreDiab achieves mass balance certification, introduces bio-based PVC
As part of its ISCC Plus certification, guaranteeing traceability, Diab is basing all Advanced kits on mass-balanced fossil-free PVC starting in March.
Read MoreComposites portfolio targets thermoplastics, flame-retardant solutions
JEC World 2025: Avient showcases its portfolio of advanced composites and engineered fiber solutions, including its Hammerhead FR flame-retardant thermoplastic composite panels.
Read MoreKnowledge Centers

CW’s editors are tracking the latest trends and developments in tooling, from the basics to new developments. This collection, presented by Composites One, features four recent CW stories that detail a range of tooling technologies, processes and materials.
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This CW Tech Days event will explore the technologies, materials, and strategies that can help composites manufacturers become more sustainable.
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Join us for insights into advanced bonding techniques and welding processes for composite materials to ensure durability and structural integrity.
LEARN MORELatest Core News And Updates
Easy-to-process particle foam targets composite foam core needs
JEC World 2025: Asahi Kasei presents SunForce, a modified polyphenylene ether (mPPE) particle beads foam featuring high heat resistance and low water absorption.
Read MoreHexcel core supports Boeing’s development of the MQ-25 Stingray
HRH-302 honeycomb core material, currently under evaluation for use around the UAV’s high-temperature exhaust nozzle, could considerably extend its range.
Read MoreMelker of Sweden accomplishes sea kayak with 100% sustainable composite construction
Built with ampliTex flax fabrics, a solid cork core and Sicomin plant-based resins, the company’s Värmdö kayak model highlights an environmentally conscious design for paddlers of all levels.
Read MoreComposite Kape skateboard delivers durability, pop
Collaborative effort between KraussMaffei and entrepreneur Peter Karacsonyi led to the Vanguard, an in-situ polymerized board comprising fiberglass sandwich composites with a recyclable polyamide.
Read MoreDiab, Brødrene AA celebrate 50 years of composite ferry innovation, sustainability
Partners reflect on the increasing use of Diab foam core and GFRP, CFRP composites in Brødrene AA construction over the years, resulting in lightweight, high-performance and efficient marine craft.
Read MoreHexcel introduces mid-temp Flex-Core HRH-302 honeycomb core
Bismaleimide (BMI) option to serve complex curvatures and thermal management needs of military, commercial and UAM aircraft.
Read MoreFeatured Posts
PUR composite sandwich panels for 3D automotive parts, high-volume panels and more
At its U.S. sites, Ascorium produces glass fiber/PUR 3D parts via semi-automated molding, high-volume flat panels via a continuous line while working toward bio-based PUR and recycling.
WatchVIDEO: Precision fabrication of honeycomb materials
MachineTek showcases its precision fabrication of honeycomb materials at CAMX 2024.
WatchComposite SIPs for more affordable, efficient and sustainable buildings
LiteSIP panels and modules enable framing in days, cutting structural labor and total cost by up to 70% and 30%, respectively, while increasing energy efficiency and durability.
Read MoreGuidance for the thermoforming process
A briefing on some of the common foam core material types, forming methods and tooling requirements.
Read MoreAviation-specific battery system uses advanced composites to address electric, hybrid flight
BOLDair’s composite enclosure, compression structures and thermal runaway management enables high-performance electric energy storage.
Read MoreBio-based, fire-resistant composites become mainstream
Projects use Duplicor prepreg panels with highest Euroclass B fire performance without fire retardants for reduced weight, CO2 footprint in sustainable yet affordable roofs, high-rise façades and modular housing.
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