Laser Surface Preparation for Adhesive Bonding

Laser Surface Preparation for Adhesive Bonding

Laser surface preparation is a fast, precise, and repeatable process. It allows manufacturers to scale up production and ensure the highest level of quality. It is used to prepare metal surfaces for bonding with thermal adhesives, structural adhesives, and other types of adhesives.

Using fiber lasers, you can remove contaminants, change the surface roughness, and modify the chemical composition of the surface to drastically improve the adhesive bond strength.

Benefits of Laser Technology for Adhesive Bonding

  • Improve the Bond Strength

    Improve the Bond Strength

    Laser surface preparation improves bonding in multiple ways:

    • It removes all contaminants at once so that they do not interfere with the bonding process.
    • It creates a precise surface texture with a pattern and roughness optimized for each bonding application (i.e., for each type of surface and adhesive).
    • It modifies the chemical composition of the surface by introducing beneficial oxides that increase the surface free energy. These oxides create more bonding sites for a stronger bond.
  • Scale Up Production

    Scale Up Production

    Laser machines can be configured to meet demanding production requirements, such as high production volumes or short cycle times.

    • As a non-contact process requiring no consumables, laser surface preparation is easy to automate and generates minimal maintenance, making it easier to keep the production line running without interruption.
    • When configured to texture before bonding, our single-mode pulsed fiber lasers come with up to 2,000W of laser power. This high power makes it possible to increase the speed of the laser process as needed.
    • Our laser experts optimize the optical configuration for each bonding application based on the substrate and the adhesive, making sure it is as fast as possible.
  • Achieve High Repeatability

    Achieve High Repeatability

    Unlike methods like grit blasting or chemical etching, laser technology makes it easy to control quality for the bonding process.

    • No masking is needed due to the laser’s high precision. This eliminates manual errors that can occur during the masking process.
    • Dust contaminants that originate from the laser texturing process are much easier to manage than those from grit blasting. This ensures that dust does not recontaminate your parts.
    • Because it operates using a non-contact process, the laser texturing machine does not degrade due to mechanical wear. This prevents imprecisions caused by damaged components.
  • Minimize the Variety of Adhesives

    Minimize the Variety of Adhesives

    Laser surface preparation helps reduce the number of adhesives used on a part. While each type of surface may require a specific adhesive, the improved bond strength provided by laser texturing makes it possible to use the same adhesive for multiple types of surfaces. This reduces the number of consumables to manage and the number of adhesive dispensers on the shop floor.

  • Implement a Sustainable Technology

    Implement a Sustainable Technology

    Fiber laser technology reduces the environmental impact and resource consumption of adhesive bonding operations, enabling greener and more efficient manufacturing processes.

    • High-energy efficiency that lowers power consumption
    • Compact design that helps reduce the size of production lines
    • No consumables or chemicals during laser surface treatments
    • Durable laser source with a long operating life (+10 years)

Examples of Laser Surface Preparation for Adhesive Bonding


Battery Cells & Packs

With the rise of structural and blade batteries, an increasing number of adhesives are being used during manufacturing. Laser texturing is used to prepare battery cells and packs for structural and thermal adhesives.


Electric Motors

A wide variety of adhesives are used in the assembly of e-motors. Laser cleaning and laser texturing are used to prepare the surface of electric motor housings before bonding, as well as other bonded components of the e-motor.

Cooling Plates

Cooling Plates

Laser texturing is used to prepare cold plates for bonding, whether they are at the bottom of the pack (bottom plates) or between cells (wave plates).

Resources on Laser Texturing for Adhesive Bonding

Battery Laser Texturing for Bonding

Battery Laser Texturing for Bonding

This document provides data on the effect of laser texturing on cylindrical battery cells. You can find:

  • A comparison of the lap shear strength obtained with laser texturing and sandblasting (for bonding using Loctite EA 9460).
  • The results of aging tests on samples treated using laser texturing and an Alodine treatment (for bonding with Betamate 4601).

View Technical Data


Laser Texturing to Prepare Metal for Bonding

This webinar comes with a technical paper that explains how laser texturing improves metal bonding. You can learn about:

  • The effect of laser texturing on the micro surface of metals
  • The different types of patterns that can be created by laser texturing
  • How laser texturing compares with other methods, including grit blasting, chemical etching, and plasma cleaning
  • Which laser parameters are best to prepare surfaces before adhesive bonding

View Technical Data

How to Do Surface Preparation for Adhesive Bonding

How to Do Surface Preparation for Adhesive Bonding

This article explores the 3 aspects of surface preparation that improve adhesive bonding: contaminant removal, surface roughening, and chemical composition modification.

It also explains the main tests used to validate the quality of surface preparation: chemical composition analysis, wettability tests, and aging studies.

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Laser Welding Process Development

Laser Process Development for Adhesive Bonding

If you want to explore the effects of laser texturing, we can perform feasibility studies and optimize the laser process for your bonding application.

Our experts will find the laser configuration that maximizes the bond strength and the speed of the process. We will also work with you to find the best solution to integrate the process in your production line.

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Recommended Laser Solutions for Adhesive Bonding Applications


  • Robot Laser Machine

    Robot Laser Machine

    Robotized laser solutions provide all the flexibility you need to prepare multiple types of parts, complex geometries, and adapt to evolving part designs.

    View Laser Machine
  • Door Laser Machine

    Door Laser Machine

    Loaded manually or by robot, this machine can be equipped with a rotary axis and a gantry system to move the laser and rotate the part as needed to cover all areas that need surface preparation.

    View Laser Machine
  • Conveyor Laser Machine

    Conveyor Laser Machine

    Laser machines can be installed to process parts moving on conveyors. A gantry system in the enclosure can move the laser to cover all the required areas.

    View Laser Machine

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