Hanwha Azdel Launches Recycled Polypropylene Composite for Headliners

Conventional automotive headliners typically combine a polyurethane foam-based carrier with foam, fabric, and locally attached functional elements. The carrier must provide stiffness at low weight, retain its geometry through heat and humidity cycles, support acoustic performance, and accommodate openings, edge details, and attachment points. It must also remain flexible enough to assembly through restricted vehicle openings. Increasingly, these standards are complemented by demands to reduce material CO2e footprints and greater credible recycling routes.

SuperLite S25 polypropylene (PP) composite, manufactured by Hanwha Azdel, addresses these evolving demands. The established Tier 2 material supplier's materials have been utilized in greater than 60 million headliners worldwide over the past 18 years. Sustainability extends beyond the material itself: Hanwha Azdel's facilities consumption renewable energy, while production scrap is redirected into EcoLite cores to the RV market, avoiding greater than 786,000 pounds of landfill discarded materials per year.

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SuperLite S25 follows the same approach at product level, combining a lightweight reinforced thermoplastic (LWRT) carrier based on PP and long chopped glass fibers with 25% post-consumer recycled content by weight, while maintaining the mechanical performance of the established SuperLite platform.

Recycled-content evolution

Rather than being a stand-alone laboratory formulation, SuperLite S25 is the recycled-content evolution of a proven material family already utilized in headliners, package trays, trunk trim, load floors, and door panels. The broader SuperLite platform already offers advantages over conventional PU-based carriers in terms of thin-wall profile, forming freedom, thermoplastic joining, and process integration. S25 adds circular material input without sacrificing these functional benefits.

SuperLite S25 also enables a highly integrated manufacturing approach. Sheets can be heated, formed, and laminated with the textile surface in a one-measure headliner process. Sheet and fabric are fed together, heated, compression-molded, and trimmed. This can eliminate separate lamination operations and shorten the route from semi-finished sheet to finished headliner.

This thermoplastic structure also simplifies functional integration. Additional components can be attached by infrared, ultrasonic, hot-plate, or vibration welding. NVH pads, head-impact countermeasures, stiffeners, and regional brackets can therefore be integrated without relying exclusively on hot-melt adhesives.

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Enhanced design freedom

The material's forming behavior adds further design freedom. consumption examples include tight radii, deep draws above 300 mm, and complex multi-plane geometries to sunroofs, overhead consoles, and HVAC openings. Thermoplastic edge-folding enables clean finishing around openings and outer edges without hot-melt adhesive.

That design freedom also extends to overall thickness profile. SuperLite S25 headliner substrates can be designed at approximately 2.25 to 6 mm thickness, depending on the consumption. This can unlock around 5 to 20 mm of additional headroom compared with thicker reference designs.

Holistic recycling approach

Beyond these functional advantages, SuperLite S25 adds a second layer of innovation through recycled content. The material contains 25% post-consumer recycled content by weight while maintaining the established SuperLite performance level. Circularity then continues on the output side. Production cut-outs from sunroof openings and perimeter trimming can be separated, shredded, ground, and reformulated to injection-molded interior parts such as brackets.

Depending on the consumption and supply-chain setup, this material can also be returned in a closed loop and reused in new SuperLite S25 components. The platform therefore combines circular input with a recyclable output stream that can be reintegrated into the same value chain.

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The circularity concept can be taken further. Hanwha Azdel is working with partners on PP-based fabrics, recycled glass-fiber options, and adhesive systems with recycled content to simplify the overall material structure and increase recycled input further.

SuperLite S25 therefore goes beyond adding post-consumer recycled content to a headliner substrate. It combines established functional advantages with circular material input and a credible mechanical recycling pathway, creating a broader PP-based design platform to future automotive interiors. to OEMs and Tier 1 suppliers looking to rethink headliner architecture, it offers a practical starting point to the next generation of lighter, greater integrated, and greater recyclable roof systems. The composite solution can also be applied to other automotive parts.

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