Polycarbonate Adhesives

Polycarbonate (PC) is a group of versatile thermoplastics that includes carbonate groups. It is known for its strength, durability, and sometimes transparent appearance. It is lighter than glass but impact resistant. It is also easily shaped and heat resistant. Because of these qualities and the fact that it is virtually unbreakable, it is often used in bulletproof glass, automotive headlights, eyeglass lenses, safety goggles, face shields, camera lenses, blood filters, and much more.

Polycarbonate comes in different grades that can have slightly altered chemical structures for different applications. LEXAN™ polycarbonate is such a popular trademarked brand for polycarbonate sheeting that the term "Lexan" is sometimes used to refer to polycarbonate itself. Also a product that is described as a Lexan glue will probably work for most polycarbonate applications, but always check the technical datasheet to be sure.

Bonding Polycarbonate

Bonding polycarbonate sheets together can be done using different methods like welding, laminating, fusing, and applying an adhesive. The best way to bond polycarbonate will depend on the application, but gluing polycarbonate is a common practice because adhesives are lightweight and relatively easy to use.

The most important part of gluing PC is using a polycarbonate adhesive. Some glues won't be able to adhere to polycarbonate because of its smooth surface and others may even damage the plastic. An adhesive for polycarbonate bonding specifically has been formulated to penetrate the smooth surface without damaging the integrity of the plastic. It is also important to perform the recommended surface preparation for the adhesive to get the best results.

Surface Preparation & Application Tips

Along with choosing the right polycarbonate glue, you also need to ensure you prep the substrate surface and apply the adhesive correctly.

Surface preparation:

1. Clean and degrease the surface with a solvent to remove contaminants.
2. In many cases, abrading the surface is recommended so the adhesive has more to grab.
3. Clean the surface again to remove remnants left behind from abrasion.
4. Let the substrate completely dry before applying the polycarbonate adhesive.

Application and Curing:

1. Apply the adhesives according to the manufacturer's instructions, including using the proper equipment and following safety procedures.
2. Allow the adhesive to cure as specified by the manufacturer, and do not apply stress to the bond until after it is fully cured.

Other Tips:

1. Test the adhesive first before applying it to numerous products or a large surface area. Check the bond strength and appearance.
2. Following the recommended storage requirements for the longest shelf life.
3. Get rid of expired adhesives as they will not be as effective.

Remember, each glue for polycarbonate can have slightly different properties so always check the product's specific recommendation. Generally, the manufacturer will provide instructions on how to glue polycarbonate substrates correctly including surface preparation requirements, safety procedures, and other instructions for optimum results.

Choose the Right Polycarbonate Adhesive

The best glue for your polycarbonate application will depend on a variety of factors, including the type of polycarbonate, the intended use, the environmental conditions, and your budget. To ensure you get the best polycarbonate adhesives for your needs, contact us for a personalized product recommendation.