In the not so distant past, there were limited choices for welding plastics – i.e. gluing or vibration/ultrasonic welding; and while both have their advantages and ideal applications, they are not up to the task of handling today’s smaller and more sophisticated product designs that use plastics.
It can be confusing to compare typical plastic welding methods and determine which one is best for joining plastics in your product design application. In this post, we’re going to give you a quick Plastic Welding 101 tutorial on the pros and cons of each type of plastic joining process and provide you some guidelines on ideal applications for each.
Pumps, catheters, diagnostic valves . . . when you’re combining clear plastic parts, major headaches can occur. Traditional laser transmission welding requires one half of the component being joined to be laser-transmissive (allowing laser light to pass through), while the other half is laser-absorbing, thereby creating a surface which can melt and create a bond. The challenge when welding two clear (and laser transmissive) pieces of plastic together, is that the laser light simply transmits through both halves of the component, as there is no absorbing material present to heat and melt in order to create the bond. But solving that problem created another.