STAKING

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

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InfraStake

Focused infrared light radially heats the plastic boss and a non-heated punch forms the stake.

Hot Air Cold Punch

Heated air softens the plastic boss and a non-heated punch forms the stake.

Ultrasonic

Metal tool (sonotrode) vibrates against the plastic boss generating frictional heat to melt it and form a stake.

Thermal Punch

Heated metal forming tool melts and forms the plastic boss into a stake.

The InfraStake Process

Clamp

Module is positioned over the molded boss. The face of the concentrator clamps the part directly at the stake point.

Heat

Infrared (IR) lamp is illuminated. Light is focused radially on the plastic boss.

Form

IR lamp is switched off and the non-heated punch forms the semi-molten boss into a stake.

 

Retract

After the plastic has re-solidified, the punch retracts and the module retracts from the part.

Read our blog posts about InfraStake

Extol and CEMAS reach distributor agreement

EXTOL, INC. AND CEMAS ELETTRA REACH DISTRIBUTOR AGREEMENT CEMAS ELETTRA will be sole distributor for InfraStake in Europe and South America Zeeland, Michigan: Extol is pleased to announce that CEMAS has been appointed as the sole distributor of Extol’s InfraStake...

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When should I use InfraStake?

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.

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Comparing plastic staking technologies

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.

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We provide several options to meet many diverse staking equipment needs.

Whether you need a ‘turn-key’ machine or a comprehensive package of components that can be integrated, we’ve got you covered.

The Hot Air Cold Punch Process

Heat

Air passes through a heater and is directed at the boss.

Form

Hot air shuts off and a non-heated forming tool forms the semi-molten boss into a stake. Cooling air passes through the module to cool the stake.

Retract

After the plastic has re-solidified, the forming tool retracts.

The Ultrasonic Staking Process

Heat

A metal tool (sonotrode) vibrates against the boss generating frictional heat.

Form

As the plastic melts, the sonotrode forms the boss into a stake.

Cool

Vibration stops and the sonotrode continues to apply pressure to the stake while it cools.

Retract

After the plastic has re-solidified, the sonotrode retracts.

The Thermal Punch Process

Heat

A hot metal forming tool applies pressure and conducts heat into the boss.

Form

As the plastic melts the hot tool forms the boss into a stake.

Cool

Cooling air is directed at the forming tool, lowering its temperature.

Retract

After the plastic has re-solidified, the forming tool retracts.

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