How to avoid bubbles with adhesives, and related cases?

Avoiding bubbles is key when using adhesives. Here are some suggestions:

1. Surface preparation: Ensure that the working surface is clean, smooth and free of oil or dust. Use a cleaner and appropriate surface treatment, such as cleaning, grinding, or sanding, to ensure that the adhesive can fully contact and adhere to the surface.
2. Uniform smear: When applying adhesive, use uniform smear thickness and appropriate smear method. Avoid excessively thick or uneven application, as this may lead to the formation of air bubbles.
3. Avoid squeezing too fast: When using pressure or extrusion devices, avoid squeezing the adhesive too quickly. Squeezing too fast may introduce air and create bubbles.
4. Air removal: Use a roller, scraper or exhaust tool and other tools, air out of the adhesive. After applying the adhesive, gently slide the vent tool over the surface to remove potential air bubbles.
5. Consider low-bubble formulations: Choose adhesives with low-bubble formulations that are optimized to reduce bubble production. Work with manufacturers to select adhesives suitable for specific applications.

   

Case study: A manufacturing company encountered a bubble problem during the production of auto parts. They took the following measures to solve the problem:

– Surface treatment: First, they thoroughly clean and grind the working surface to ensure that the adhesive can fully adhere. They also used surfactants that help reduce surface tension and bubble formation.

– Application technology improvement: The company has improved the application technology to adopt a more uniform application method and appropriate application thickness. They use professional applicator tools and equipment to ensure that the adhesive is evenly distributed and to minimize the formation of air bubbles.

– Venting tool: After applying the adhesive, they used a specialized venting tool to remove potential air bubbles from the adhesive. This helps improve the quality of the adhesive and reduces the presence of air bubbles in the final product.

Through these improvements, the company has successfully solved the bubble problem, improved the quality of the adhesive used, reduced the rejection rate and improved the overall reliability of the product.