The Global Sandwich Foam Core Market was valued at USD 322 Million in 2023 and is projected to reach USD 477.81 Million by 2030, growing at a Compound Annual Growth Rate (CAGR) of 5.80% during the forecast period (2024–2030). This growth is being driven by the relentless pursuit of lightweighting across aerospace, automotive, and wind energy sectors, coupled with the rising demand for energy-efficient building materials in construction.

Sandwich foam cores are the unsung heroes of modern engineering, providing the critical lightweight, stiff, and insulating core in composite panels used from aircraft wings to wind turbine blades. As industries worldwide push for greater efficiency and sustainability, the spotlight turns to the key material innovators and manufacturers. In this blog, we profile the Top 10 Companies in the Sandwich Foam Core Industry—a mix of global material science leaders and specialized composite pioneers shaping the future of advanced structures.

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🔟 10. BASF SE

Headquarters: Ludwigshafen, Germany
Key Offering: Polyurethane (PU) Foam Cores, Specialty Polymeric Materials

A chemical giant, BASF provides advanced polyurethane foam core materials used in various lightweight composite applications. Its expertise in polymer chemistry supports the development of customized core solutions with specific density, strength, and thermal properties for demanding industrial uses.

Innovation & Sustainability Initiatives:

• Development of bio-based and recyclable polyol feedstocks for PU foams.
• R&D focus on foam cores for sustainable urban mobility and construction.
• Commitment to carbon-neutral growth ambitions, influencing material production pathways.

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9️⃣ 9. SABIC

Headquarters: Riyadh, Saudi Arabia
Key Offering: Structured Foam Core Solutions, Thermoplastic Composites

SABIC offers innovative foam core materials, including its STRUCTURA® foam core solutions, which are designed for high-performance marine, transportation, and industrial applications. The company leverages its petrochemicals backbone to develop materials that balance performance with processability.

Innovation & Sustainability Initiatives:

• Investment in thermoplastic foam cores for recyclable composite systems.
• Initiatives to incorporate certified renewable feedstocks into its chemical production.
• Collaborations with OEMs to develop next-generation lightweight vehicle components.

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8️⃣ 8. Armacell International S.A.

Headquarters: Luxembourg City, Luxembourg
Key Offering: ARMAFOAM® & ARMACORE® PET Foam Cores

Armacell is a global leader in engineered foams, with a significant presence in the sandwich core market through its ARMACORE® family of PET (Polyethylene Terephthalate) foams. These 100% recyclable foam cores are favored in wind energy, marine, and transportation for their mechanical properties and environmental profile.

Innovation & Sustainability Initiatives:

• Pioneer in PET foam technology, offering a recyclable alternative to PVC.
• Continuous expansion of PET foam production capacity to meet growing demand, particularly from the wind sector.
• Focus on sustainable manufacturing processes and circular economy principles for its foam products.

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7️⃣ 7. Changzhou Tiansheng New Materials Co., Ltd.

Headquarters: Changzhou, Jiangsu, China
Key Offering: PVC Foam Core, PET Foam Core, Balsa Wood Core

As a leading Chinese manufacturer, Tiansheng supplies a wide range of foam core materials, serving the booming domestic markets in wind energy, marine, and transportation. The company’s competitive pricing and expanding portfolio make it a key supplier in the Asia-Pacific region and globally.

Innovation & Sustainability Initiatives:

• Significant contributor to the local supply chain for wind turbine blade manufacturers.
• Investment in scaling up PET foam production to compete with Western manufacturers.
• Focus on R&D to improve the fire performance and mechanical properties of its core products.

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6️⃣ 6. Evonik Industries AG

Headquarters: Essen, Germany
Key Offering: ROHACELL® Polymethacrylimide (PMI) Foam Cores

Evonik’s ROHACELL® is the gold-standard for high-performance PMI rigid foam cores. With an unparalleled strength-to-weight ratio and exceptional thermal stability, it is the material of choice for primary structures in aerospace, racing, and high-end industrial applications where performance is critical.

Innovation & Sustainability Initiatives:

• Ongoing development of next-generation ROHACELL® with enhanced properties for future aerospace programs.
• Research into sustainable production processes and recycling technologies for PMI foams.
• Strategic partnerships with aerospace OEMs and tier-1 suppliers for advanced material solutions.

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5️⃣ 5. CoreLite Inc. (Part of Schweiter Technologies)

Headquarters: Seattle, Washington, USA
Key Offering: PVC Foam Cores, PET Foam Cores

CoreLite is a prominent North American manufacturer of lightweight structural foam cores, including PVC and PET products. It serves diverse markets such as marine, transportation, and construction, known for its consistent quality and technical support.

Innovation & Sustainability Initiatives:

• Strong focus on the marine industry with cores designed for infusion and prepreg processes.
• Expansion of its PET foam offerings in response to the growing demand for recyclable core materials.
• Commitment to providing sustainable materials solutions aligned with industry environmental goals.

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4️⃣ 4. The Gill Corporation

Headquarters: El Monte, California, USA
Key Offering: Aluminum Honeycomb, Aramid Honeycomb, Foam Cores, Finished Panels

The Gill Corporation is a vertically integrated manufacturer specializing in both honeycomb and foam core sandwich structures. It provides complete solutions from core materials to finished composite panels, serving aerospace, defense, and commercial markets with high-reliability products.

Innovation & Sustainability Initiatives:

• Long-standing trusted supplier to major aerospace and defense primes.
• In-house engineering and fabrication capabilities for complex, value-added assemblies.
• Development of fire-resistant and specialized core materials for demanding aerospace applications.

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3️⃣ 3. DIAB Group

Headquarters: Laholm, Sweden
Key Offering: Divinycell® PVC Foam, ProBalsa® Balsa Core

DIAB is a powerhouse in engineered core materials, renowned for its Divinycell® PVC foams and ProBalsa® products. With a global manufacturing footprint, it serves the wind energy, marine, aerospace, and transportation industries with a focus on innovation and application expertise.

Innovation & Sustainability Initiatives:

• Major supplier to the global wind turbine blade industry.
• Investment in green chemistry to develop more sustainable PVC foam variants.
• Continuous product development to improve core properties for resin infusion and prepreg processes.

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Sandwich Foam Core Market – View in Detailed Research Report

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2️⃣ 2. Gurit Holding AG

Headquarters: Wattwil, Switzerland
Key Offering: PET Foams (ProBalsa, balsa), Formable Foam Cores, Core Kitting Services

Gurit is a leading global supplier of composite materials, with a strong portfolio in core materials. Its products, including the innovative ProBalsa and PET foams, are critical in wind energy, marine, and industrial markets. Gurit is known for its technical service and integrated material solutions.

Innovation & Sustainability Initiatives:

• Significant investment in PET foam technology as a sustainable alternative.
• Development of advanced core kits and engineering services to streamline customer manufacturing.
• Strong market position in the rapidly growing wind energy sector.

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1️⃣ 1. 3A Composites (a Schweiter Technologies Company)

Headquarters: Sins, Switzerland
Key Offering: AIREX® & BALTEK® Foam & Balsa Cores

3A Composites’ Core Materials division, encompassing the AIREX® (PET, PVC, PU foams) and BALTEK® (balsa wood) brands, is arguably the most recognized name in the industry. It offers the widest range of core material technologies, serving virtually every composite market segment from aerospace to sports equipment with a relentless focus on quality and innovation.

Innovation & Sustainability Initiatives:

• Market leadership with the most comprehensive core material portfolio globally.
• Pioneering work in recyclable PET (AIREX® T90) and bio-based foam cores.
• Sustainable balsa wood sourcing through its vertically integrated BALTEK® supply chain.
• Continuous R&D to set new performance benchmarks for weight, strength, and process efficiency.

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🌍 Outlook: The Future of Sandwich Foam Core is Smarter and More Sustainable

The sandwich foam core market is undergoing a significant evolution. While traditional materials like PVC and balsa continue to dominate in volume, the industry is rapidly adopting recyclable and bio-based alternatives, investing in digital manufacturing tools, and developing core solutions for next-generation applications like urban air mobility and hydrogen storage.

📈 Key Trends Shaping the Market:

• Sustainability Imperative: Accelerated shift towards PET foams and development of novel bio-based or recyclable core materials to meet circular economy goals.
• Wind Energy Expansion: Sustained global growth in wind power, particularly offshore, driving massive demand for large-format, high-performance foam and balsa cores.
• Advanced Manufacturing: Integration of cores with automation, digital twins, and Industry 4.0 practices to improve quality and reduce waste in sectors like aerospace and automotive.
• Multi-Functional Cores: Development of cores with integrated properties such as thermal/acoustic insulation, fire resistance, or structural health monitoring capabilities.

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Sandwich Foam Core Market – View in Detailed Research Report

The companies listed above are not just supplying materials—they are enabling innovation across industries, helping to build lighter, stronger, and more efficient vehicles, structures, and machines that define our modern world.