Learning Center

Explore our Learning Center to learn more about welding and assembly processes. Read blog posts filled with helpful tips and information about automation and plastics joining technologies. Or start with the Plastic Joining Processes section to get the basics.

How to determine the strength of a plastic staking joint

How to determine the strength of a plastic staking joint

Design engineers often ask us, “How strong will my staked joint be?” Usually, they’re 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 just want a number, 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…

We are doing it again…

We are doing it again…

We are doing it again… We are redesigning nanoSTAKE. What? Why?!
Well, this is what we do. Rather than wasting a lot of time trying to develop the perfect product and coming up short or missing the mark entirely, we work hard to get a viable product in your hands fast. We want you to see it, touch it, play with it, and tell us what should improve. That way we can make it better.

Read more blog posts.

Check out all of our blog posts about staking, hot-plate welding, hybrid vibration welding, and more.

Plastic Joining Processes

Staking

Plastic staking is a method of joining components together using a molded stud or boss to mechanically retain a mating component. Heat is applied to the boss, softening it, and a forming tool is used to reshape the material into a cap or stake.

Technology Examples:

  • nanoSTAKE
  • InfraStake
  • Ultrasonic Staking
  • Hot-Air Staking

Hot-Plate Welding

Hot-plate welding is the process of welding two plastic parts together using a heated tooling plate. A weld rib or bead on each component is brought into contact with the hot plate. Heat conducts into the weld rib causing it to melt. The heated tool is then removed and the parts are pushed together until they bond to one another.

Technology Examples:

  • Rapid Conductor
  • Compact FUSION

Laser Plastic Welding

Laser welding uses a precise IR laser beam that is directed through a transmissive material and penetrated into an absorptive material. The two materials are held in tight contact with each other and the joint between them heats up and melts as energy from the laser is absorbed. The result is a clean weld with minimal flash.

Technology Examples:

  • Extol configures laser welding machines around the application

Spin Welding

Spin welding is a method of joining plastic components together with surface friction concentrated in a circular weld joint. One part is spun relative to another and force is applied, causing the material to heat and melt. The spinning process stops and the parts continue to be pressed together while they bond together.

Technology Example:

  • Vortex PRECEDENCE

Through-Transmission IR Welding

Innovative through-transmission infrared welding in a compact package. This technology uses focused IR light energy to replace adhesives. Useful in both linear and spot welding applications.

Technology Examples:

  • InfraWeld

Ultrasonic Welding

Ultrasonic welding uses high-frequency vibration to melt and weld plastic. A tool vibrates at ultrasonic frequencies and causes concentrated molecular vibration in the weld joint. The friction between the molecules heats and melts the plastic. Once the vibration is stopped, the tool maintains a holding pressure on the joint to create a bond.

Technology Examples:

  • Dukane Ultrasonics
  • Branson Ultrasonics
  • Herrmann Ultrasonics

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