5 Ways Primerless Tapes Enhance Sustainable Automotive Bonding
With over 94 million vehicles produced per year worldwide, efficiency and streamlined processes have become paramount in automotive manufacturing. While small details and improvements may often seem negligible, the staggering production numbers highlight that every detail truly matters.
Automotive production in million vehicles. Source: Statista.
This article will explore how primerless bonding tapes can significantly enhance performance whilst aligning with modern sustainability goals. Automotive engineers, purchasers, and application engineers will discover why incorporating these innovative solutions can be a transformative game-changer for their operations.
Let’s unlock the potential of primerless bonding tapes and drive towards a more efficient future in automotive bonding.
In automotive manufacturing and other industries, securely attaching parts such as antennas, sensors, trims, and decorative elements is essential. Mechanical fasteners, liquid adhesives, and bonding tapes are among the most common solutions, each with its own set of advantages and disadvantages.
Mechanical fasteners provide robust strength but often require holes or fixtures, which can compromise surface integrity and pose risks of water ingress, corrosion, and dirt accumulation. Nevertheless, particularly for heavy-duty applications, mechanical fasteners remain the preferred choice.
Liquid adhesives can create strong bonds; however, they can be difficult to apply, and the required curing time can slow down manufacturing processes. Furthermore, issues such as air bubbles and adhesive flow can result in performance or aesthetic problems.
Bonding tapes stand out by offering reliable and strong adhesion with easy application and no curing time. However, traditional tape technologies typically require surface pre-treatment, such as harsh primers, to ensure strong bonds, especially with low surface energy (LSE) materials. This is where the new generation of primerless bonding tapes becomes a revolutionary solution, combining high performance, improved handling, and streamlined production while eliminating the need for surface treatment chemicals.
#1 The Sustainable Edge of Primerless Tapes
Primerless tapes are paving the way for a more sustainable future in automotive bonding. By eliminating the need for primers, these tapes reduce VOC emissions, and fewer or no chemicals are required for pre-treatment. Protective equipment against chemicals used as primers, potential risks for workers and the environment, costly training, and tonnes of chemical waste are a thing of the past with innovative primerless bonding tapes—an excellent way to align with industry and sustainability standards.
#2 Boosting Efficiency
In the automotive industry and many other sectors, time is money. Primerless tapes streamline the bonding process, eliminating the drying time associated with traditional adhesives. This efficiency translates to shorter production cycles and increased throughput, appealing to automotive engineers and manufacturers alike. By making surface pre-treatments with primers obsolete, an entire production step can often be eliminated.
#3 Perfect Pairing: LSE Materials and Primerless Tapes
Low surface energy materials are becoming increasingly popular in automotive manufacturing due to their repellent nature and the Lotus effect. “The lotus effect refers to self-cleaning properties that are a result of ultrahydrophobicity as exhibited by the leaves of Nelumbo, the lotus flower. Dirt particles are picked up by water droplets due to the micro- and nanoscopic architecture on the surface, which minimises the droplet's adhesion to that surface” (source: Wikipedia). Typical LSE surfaces are painted structures and certain plastics, mostly used on the exterior of the vehicle. Primerless tapes are specifically designed to bond effectively with these challenging substrates, ensuring strong, durable connections without the need for additional surface treatments.
#4 Cost-Effectiveness: A Long-Term Investment
While primerless tapes may have a higher upfront cost compared to traditional bonding solutions, their long-term benefits, including reduced labour and material costs, make them a financially sound choice. Especially when you factor in the savings from the elimination of expensive primers, protective equipment, training, and ultimately the disposal of chemicals, as well as the increase in productivity and effectiveness, the full extent of the financial benefits becomes clear. Understanding this can help purchasers calculate potential ROI (Return on Investment) and make informed decisions that benefit their bottom line.
#5 Unmatched Performance: Durability in Action
Primerless bonding tapes offer exceptional performance across a range of conditions, including temperature fluctuations and exposure to moisture. Their durability ensures that automotive applications maintain structural integrity over time, which is crucial for safety and reliability. Their good conformability allows usage even with complex shapes, and their multifunctional design, which combines reliable bonding with sealing, dampening, and gasketing all in one product that is highly resistant to environmental influences, chemicals, or temperature, makes this new generation of primerless tapes the future of automotive manufacturing.
Automotive manufacturing processes are complex, and once they are in place, it is difficult to change even small parts. “Never touch a running system” is a logical consequence, but as soon as you are planning to head in different directions, contacting your tape expert should be on every engineer’s list to identify how to benefit the most from innovative primerless tape solutions.
As there are multiple bonding tape options for different applications, exploring additional automotive bonding solutions might help to choose the right approach.