What does each paint system specify regarding adhesion promoters?

Each paint system provides crucial specifications regarding adhesion promoters, primarily focusing on the compatibility between the promoter and the underlying materials. Proper adhesion is essential for the durability and performance of the paint finish, and different materials may require different types of adhesion promoters to ensure a strong bond.

When a paint system specifies the appropriate adhesion promoter based on the plastic part's composition, it considers factors such as the inherent properties of the plastic—its surface energy, chemistry, and any potential contaminants. Each type of plastic may have a unique texture or chemical makeup that influences how well paint adheres to it. Thus, using the correct adhesion promoter enhances the likelihood of achieving a uniform finish and prolongs the lifespan of the paint job.

The other options miss the mark because they either imply a lack of relevance to the specific materials involved or suggest an oversimplification of the requirements by treating all substrates as the same. It is crucial to recognize the unique interactions between different paint systems and substrates, which is why the specifications provided in the paint system are vital for optimal results.