Two of the most popular methods for assembling plastic parts into finished products are adhesives and ultrasonic welding. But how can a manufacturer differentiate between these two options? What questions should product design and manufacturing teams ask when deciding why and when to select these assembly methods?

The answers to these questions are influenced by the following factors, which typically fall into two broad categories business factors and part factors. Business factors involve your product lines and production needs, and the degree of speed, flexibility, and scalability that are needed in your assembly operations. Part-related factors go right to the part itself: its performance requirements, shape, and materials of construction.