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.

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Check out our hot-plate welding design guidelines.

Melt

Two components are brought into contact with a heated tool. The heat conducts into melt ribs causing them to soften. Also called the ‘Heat Phase’.

Open

The components are removed from the heated tool and it is retracted out of the way. Also called the ‘Changeover Phase’.

Seal

The components are brought together and a hold pressure is applied until the weld cools. Also called the ‘Weld Phase’.

Learn about hot-plate welding process control.

Sticky Issues

Extol conducts ongoing tests with various coating types and we offer recommendations for the most suitable tool materials and coatings based on the unique attributes of each application.

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Read our blog posts about hot-plate welding

Vibration vs. Hot-Plate Welding

We all love options – colors, cars, hobbies, music, and of course our favorite, plastic welding!
Let’s talk about a few of the differences between vibration and hot plate welding that may help in discerning when to choose one over the other. Ah, but first we should briefly review the two welding processes.

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When to use hot-plate welding

When considering the common plastics joining methods for assembling a new product, in the mix of options should be hot-plate welding. This low-force method of heating and bonding plastic parts has been around a long time. Contemporary machinery and tooling provide users with exceptional control and consistent weld results.

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March Madness and welding

Ultrasonic welding vs. Hot-plate welding. When you picked your March Madness teams, you considered strength of schedule and how their weaknesses matched up. Let’s talk about welding plastic parts for life science applications and how weld strength and leak (weakness) compare between ultrasonic welding (USW) and hot-plate welding (HPW).

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Check out our hot-plate welder options.

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