INDAR: Debonding Primer Enabling Circularity of Bonded Composites

Key Benefits of the INDAR Debonding Technology  

• Maintains mechanical performance and durability throughout the product service life  
• Enables reversible structural bonding without compromising safety  
• Facilitates composite recycling and reuse in line with the 4R strategy (Reduce, Reuse, Recycle, Recover)  
• Eliminates the need for harsh chemical debonding agents, reducing environmental impact  
• Lowers operational and end-of-life processing costs through simplified material separation  
• Supports the circular economy and sustainable manufacturing models for bonded composites

Application Sectors for Reversible Adhesive Bonding  

The INDAR debonding primer has demonstrated strong performance across multiple industries requiring high-performance adhesive bonding and controlled debonding, including:  

• Automotive and e-mobility  
• Aerospace and transportation  
• Electronics and electrical components  
• Sports and leisure equipment  
• Footwear and consumer goods  

To accelerate industrial adoption, Applus+ Rescoll has licensed INDAR technology to several global adhesive manufacturers, enabling large-scale industrialization and worldwide commercialization of reversible bonding solutions.  

Success Case – Composite Ski Delamination  

Controlled Delamination of Composite Skis 

Building on INDAR—the core technology behind Huntsman’s ARALDITE® DeBondEP series—Huntsman Advanced Materials played a central role in introducing, industrializing and commercializing the system for the ski market, for which Huntsman holds an exclusive license within the sport and leisure sector. Huntsman has been directly involved from the outset and remains a key contributor to the development, qualification, and commercial deployment of this technology. 

The project covered: 

• Laboratory-scale validation of mechanical performance and thermal debonding 
• Manufacturing of ski prototypes for testing 
• On-snow field evaluations assessing durability, mechanical strength, and full-scale debonding behavior

Results confirmed that INDAR based ARALDITE® DeBondEP formulations preserve structural integrity throughout use while enabling rapid, clean delamination at end-of-life or during repair. 

This success case highlights the robustness of the technology and its strong potential for broader applications such as: 

• Sandwich composite structures 
• Bonded inserts 
• Strippable coatings for CFRP aerospace and transportation components 

Sustainability & Circular Economy Impact  

INDAR represents a major breakthrough in circular materials management by addressing one of the key limitations of adhesive bonding: irreversibility.  

By enabling on-demand thermal debonding, INDAR supports:  

• Simplified composite recycling  
• Material reuse and lifecycle extension  
• Reduced waste generation  
• Lower carbon footprint across manufacturing and end-of-life stages  

INDAR positions reversible adhesive bonding as a key enabler for sustainable composites and circular economy strategies in high-performance industries.  

Applus+ Rescoll, a part of Applus+ Laboratories, combines advanced materials research, characterization, and industrial validation expertise to support the development and deployment of INDAR technology. Through application-oriented innovation and comprehensive testing capabilities, Applus+ Laboratrories reinforces its position as an industry expert in reversible bonding solutions and sustainable composite technologies.