Several thermoplastic staking technologies are available in the manufacturing industry. With many options to choose from, it is necessary to understand which processes are capable of achieving desired results. Hot air, ultrasonic, and InfraStake® were evaluated on cycle time, joint strength, strength repeatability, equipment cost, and operation cost to discern process capability. Each process has strengths and weaknesses, and recognizing each helps to determine which technology will produce the desired result in a specific application.
In the world of plastic staking, there are several different technologies to choose from. Common technologies include ultrasonic, thermal punch, hot air cold punch, and of course Extol’s InfraStake. Each of these technologies is appropriate for use in different situations, but today I’d like to spend some time discussing three applications where InfraStake is the best method for the job.
We wrote a white paper.
We often get asked how different staking technologies stack up against each other, so we decided to test it, and write a paper about it. We can’t share the whole paper with you just yet; it hasn’t been published yet. However, here is the abstract to pique your interest.
Design engineers commonly ask me, “How strong will my staked joint be?” Usually, they are designing a plastic assembly that needs to be staked, and they need to know how to design the part so that it will be strong enough for their application. They are looking for a straightforward answer, like 450 N. If they know how strong one stake point will be, they can plan how many stake points they need and where to locate them. The good news is that we can estimate the answer…
This question has been posed to me by many customers. I hear statements like, “The machine works great for a long time, and then we suddenly get all of this sticking and stringing.” This issue is somewhat common in most types of staking technologies and varies in severity among different thermoplastic materials.