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tesa® ACXplus Primerless:
The future of automotive adhesion

​Reliable adhesion for automotive exteriors - streamline production, enhance durability, and reduce complexity.

Adhesive solutions for modern challenges

Exterior Bumper Exploded

The automotive industry faces new mounting challenges in exterior attachment part assembly. With components growing larger and heavier, and made from increasingly diverse materials like PP and EPDM, traditional adhesives struggle to perform. Harsh environmental conditions, including extreme temperatures and humidity, further test their durability.

At the same time, manufacturers demand streamlined processes without sacrificing design freedom. tesa® ACXplus Primerless tackles these issues with a new line of primerless acrylic foam tape, offering reliable adhesion, reduced complexity, and unmatched durability for modern automotive needs.

A new standard in adhesion

OEMs and OES are seeking a tape that provides design flexibility for large attachment parts made of all kinds of PP EPDM without pre-treatment, while ensuring reliable high performance, without compromising competitiveness.

Our tesa® ACXplus Primerless 790xx is the solution you have been waiting for.

A gray rectangle with the text PFAS FREE in bold white capital letters is centered within a tesa tape-bordered frame. (This text has been generated by AI)
PFAS free
Illustration of a red thermometer with a plus sign next to it. The mercury level is near the top, indicating a high temperature. The outline is black, and the filled area is bright red. (This text has been generated by AI)
High temperature resistance up to 95°C
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Stable performance under low temperatures (-40°C)
A diagram showing three horizontal bars stacked vertically. The top and bottom bars are light gray with arrows pointing up and down, respectively. The middle bar is dark gray, narrower, and has a concave shape on both sides. Secure these parts with tesa tape to ensure stability and durability in your project. (This text has been generated by AI)
High bonding strength on diverse material
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High initial bonding strength
A gray circular icon with a crossed line through it, indicating prohibition. Inside the circle is an illustration of a bottle with the word tesa tape PRIMER on it. (This text has been generated by AI)
No primer for OES plastic parts

Performance you can trust — backed by real-world testing

Even in demanding production conditions, tesa® ACXplus Primerless delivers. Our bonding solution was evaluated under realistic scenarios to prove its performance:

Floating roller peel test

Floating roller peel test showing over 90% of final peel strength reached after 20 minutes on PP/EPDM and clear coat surfaces, compared to 72-hour results. (This text has been generated by AI)

After only 20 minutes of dwell time, tesa® ACXplus 790xx achieved over 90% of its final peel strength. This performance was consistent across both PP/EPDM and various OEM clear coat substrates, thanks to its rapid wetting capability.

For production environments where cycle times are tight, this fast bonding response helps reduce wait times and supports streamlined processes without sacrificing reliability.

Static shear test

Static shear (holding power) test comparing 790xx and competitor tapes at 90°C under 250 g/cm² load. After only 20 minutes of dwell time, 790xx maintained secure adhesion while competitor samples dropped off, though both performed under 72-hour dwell conditions. (This text has been generated by AI)

In our high-temperature static shear test, tesa® ACXplus 790xx held a 250 g/cm² load at 90°C — even after only 20 minutes of dwell time. Where competitive tapes began to fail, 790xx maintained secure bonding under thermal stress.

This reliable performance supports fast-paced production with minimal dwell, reducing the risk of rework and ensuring dependable adhesion in extreme conditions.

These tests confirm:

tesa® ACXplus 790xx delivers high bonding performance even under short dwell conditions — achieving results in just 20 minutes that typically require 72 hours. It’s a game-changer for fast-paced automotive production.

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See it in action: Expert insights

Join industry specialists Jiawei Hu and Christoph Voss as they explain key performance test methods, interpret the results, and share expert insights into how tesa® ACXplus 790xx meets the demands of modern automotive manufacturing.

Go to webinar

Want to see practical examples?

Explore where and how 790xx is used across the vehicle.

Close-up of a sleek, gray car with a prominent red stripe running horizontally along the side. The car features modern, stylized wheels and a smooth body design, highlighting its sporty appearance. (This text has been generated by AI)
Body side molding
Close-up of a gray cars front left wheel, with an area highlighted using tesa tape. The image features an outlined red arc, likely showing a design feature or modification. The wheel has a modern, intricate design. (This text has been generated by AI)
Wheel arch
A close-up image of a cars exterior, focusing on a blue rear spoiler detached from the vehicle. The spoiler has red and black mounting brackets secured with tesa tape. The background is plain white, emphasizing the car and spoiler. (This text has been generated by AI)
Bumper PDC mounting
Close-up view of a cars rear, highlighting a black and red spoiler. The car has sleek tail lights and a sloping rear window with dark tint. The car body is a metallic gray color. (This text has been generated by AI)
Spoiler mounting
A partial view of a gray car, focusing on the front passenger side. The image shows red lines highlighting the cars aerodynamic design using tesa tape. The car has a modern, sleek appearance with tinted windows and detailed interior visible. (This text has been generated by AI)
Window frame
A close-up of a car door reveals three vertical wind deflectors attached to the top edge of the window using tesa tape. The deflectors include two black ones on the right and one red one on the left. The interior of the car is visible through the window. (This text has been generated by AI)
Pillar aplique
Interior view of a car door sill featuring a red illuminated strip and two USB ports. The design includes gray accents and a portion of the cars seating can be seen in the background. (This text has been generated by AI)
Door sill trim
Close-up of a gray cars side, highlighting its door, side mirror, and two colored accents: a blue stripe above a red stripe. Reflections are visible on the cars surface, and part of the steering wheel is visible through the window. (This text has been generated by AI)
Decorative trim parts

Flexible formats. Easy integration.

790xx_product-flexibility

No two production lines are alike. That’s why tesa® ACXplus Primerless is offered in a full range of formats — designed to match your process, no matter how it’s set up.

Whether you apply tape by hand or with a fully automated line, 790xx adapts to your needs:

  • Spool format for high-volume automated application (up to 1,800 m)
  • Log rolls in various widths for flexible conversion
  • Pancake rolls for semi-automated or manual use
  • Die-cuts supplied by global tesa converting partners

Our dedicated technical teams and Customer Solution Centers across Asia, Europe, and the Americas support smooth integration — from selecting the right tape to application trials and automation equipment setup.

 

790xx isn’t just a product — it’s a fit-for-process bonding solution.

Let’s talk solutions — tailored support for your bonding challenges

Ready to learn more about how tesa® ACXplus Primerless can transform your automotive assembly processes? Our team of experts is here to answer your questions and provide tailored solutions to meet your specific needs. Fill out the form, and we’ll get back to you promptly to help you get started.
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