What is Thermal Heat Staking?
In thermal heat staking, light pressure and localized heat are used to control the molten flow of plastic material to capture and/or retain another component to provide a strong mechanical bond between the two components. A thermal tool at a user defined temperature contacts the plastic boss or post and heat is thermally transferred from the tool to the plastic. Once the plastic material has reached its melting point, force is introduced to the process to reform the plastic typically to the shape of the custom designed thermal tooling cavity.Thermal staking provides an alternative to ultrasonic welding when there are limitations or requirements that ultrasonic technology cannot produce. Thermal Staking also provides an alternative to ultrasonic welding when the two parts to be bonded are of dissimilar materials which will not bond together or if a simple mechanical retention of a part relative to a second part is adequate. Common type of heat staking applications involves the attachment of plastic to metal, plastic to plastic or multiple staking bosses to be simultaneously staked at various heights or sizes. There are other types of thermal applications which includes Inserting, Swaging, Heat Sealing, Embossing, Date Coding and Degating.