how to use laser marking spray


Laser marking spray is widely used in the industrial sector to create permanent and precise markings on various materials such as metals, plastics, and ceramics. It is a quick and easy method to achieve vivid and detailed markings with accuracy, consistency, and speed. In this article, we will explore how to use laser marking spray effectively and efficiently.

Types of Laser Marking Sprays

Laser marking sprays are available in a wide range of types, each formulated for specific use cases, substrates, and laser machines. Here are some of the popular types to consider:

1. Ceramic marking spray: Used for marking on fragile or delicate materials such as glass and ceramics, this spray is designed to create sharp and clear markings that withstand extreme temperature and pressure changes.

2. Metallic marking spray: This spray is formulated for marking on metals, alloys, and coated surfaces. It creates high-contrast markings that appear in white or black, depending on the composition of the substrate.

3. Plastic marking spray: As the name suggests, this spray is ideal for marking on plastics and polymers. It creates permanent markings that resist fading, scratching, and solvents.

4. Glass marking spray: This spray is used for marking on flat, cylindrical, and curved glass surfaces. It is compatible with CO2 and fiber laser machines and creates smooth and consistent markings.

5. UV marking spray: This spray is used for creating invisible markings that become visible under UV light. It is suitable for security and identification applications where covert markings are required.

How to Prepare the Surface

Before applying the laser marking spray, it is essential to prepare the surface properly to achieve the best results. Here are some steps to follow:

1. Clean the surface with a degreaser or isopropyl alcohol to remove any dirt, oil, or debris that could interfere with the marking.

2. Dry the surface thoroughly to prevent any moisture or residue from affecting the spray. You can use a lint-free cloth or an air compressor for this step.

3. Mask any areas that you do not want to mark, using masking tape or a stencil. This step is particularly crucial when marking on irregular or complex surfaces.

How to Apply the Spray

Once the surface is clean and dry, you can apply the laser marking spray using a handheld sprayer or an automated system. Here are some tips to follow:

1. Shake the spray can or bottle well before use to ensure that the contents are well-mixed.

2. Spray the surface evenly and thinly, moving the sprayer in a back-and-forth motion. Avoid spraying too close or too far from the surface, as this can result in uneven or blurry markings.

3. Let the spray dry for at least 5-10 minutes, or until it is dry to the touch.

4. Repeat the spray application if needed, depending on the desired thickness of the markings.

How to Laser Mark the Surface

Once the spray is applied and dried, you can start the laser marking process using a laser machine that is compatible with the spray type. Here are some steps to follow:

1. Set up the laser machine according to the spray type and substrate. Adjust the laser beam power, speed, and frequency to achieve the desired depth and contrast of the markings.

2. Load the substrate onto the laser machine, aligning it with the marking software.

3. Start the laser marking process, following the instructions of the software. Ensure that the spray markings are facing the laser beam and that the laser focus is aligned with the surface.

4. Monitor the marking process carefully and adjust the laser settings if needed to ensure that the markings are consistent and high quality.


Laser marking spray is a versatile and convenient way to create permanent and precise markings on various materials. By following the above steps and choosing the right spray type for your application, you can achieve vivid and detailed markings that meet your needs and requirements.


Professional Laser Marking Machine Manufacturer Since 2009. Correct Pack is a technology-based enterprise focusing on the design, development and production of marking and coding products, which are widely used in food, pharmaceutical, daily chemical, hardware and other industries.
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