High-Performance Automotive TPE for Car Door Sills

A car door sill, as part of the lower body and rocker panel assembly, reinforces cabin rigidity and side-impact protection. It also serves as a sealing surface for weatherstripping, aiding to block water, wind, and road noise.
Thermoplastic Elastomers (TPEs) are gaining traction for car door sill components due to their high impact and scratch resistance, which ensures long-term durability without cracking.
KRAIBURG TPE, a global manufacturer of high-performance TPE compound and customized material solutions offers the FG/SF/AP series developed for the Asia-Pacific automotive market. Developed specifically for vehicle interiors, this series meets stringent requirements for high-quality surface finishes.

Material Compatibility and Low Emission Performance
KRAIBURG TPE's FG/SF/AP Series demonstrates excellent PP bonding (adhesion to polypropylene), making it an ideal material for 2K injection molding, automotive overmolding applications, and insert molding of automotive components. The series supports reliable multi-material designs while delivering optimized flow properties and smooth demolding for efficient processing of complex part geometries. These processing advantages help improve manufacturing productivity, reduce cycle times, and maintain long-term durability. With Low VOC and odor emissions, the FG/SF/AP Series also meets the stringent air quality requirements for modern automotive interior applications.

Quality surface finish and durability
KRAIBURG TPE’s FG/SF/AP series offers excellent surface replication for precise texture transfer and a high-quality finish in visible car door sill components. Temperature stability up to 100°C ensures consistent performance under varying environmental conditions. The series’ insert molding capability yields durable, watertight, and rattle-free assemblies.

Recyclability and design adaptability
KRAIBURG TPE’s FG/SF/AP series enables in-process recycling, improving material efficiency and advancing sustainable manufacturing practices. Available in black color options, the materials are also highly colorable, allowing design flexibility for automotive interiors. With controlled emission and odor profiles, these compounds are well suited for environments with strict air quality requirements.

Sustainability from the get-go
At KRAIBURG TPE, sustainability drives our innovation. Our portfolio includes bio-based TPEs and compounds with post-consumer (PCR) and post-industrial (PIR) recycled content. Selected TPEs are certified under GRS and ISCC PLUS. We also provide Product Carbon Footprint (PCF) data upon request to support sustainability decisions.
We proudly earned the EcoVadis Gold Medal in 2025 and are committed to the Science Based Targets initiative (SBTi), aligning our goals with global climate action.
From reducing emissions to increasing circularity, our sustainable TPEs deliver reliable performance and are available worldwide to support your applications while advancing your sustainability goals.
Get in touch today to learn how KRAIBURG TPE can support your sustainability and product development journey.

Discover More with TPE：From car gear lever to car mirror gasket, TPE materials enable safer, more comfortable, and intelligently designed automotive components.
 

Disclaimer: The applications mentioned are illustrative of material capabilities only. Final product suitability and regulatory compliance must be assessed and validated by the customer.
 

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