In the welding of plastics, two similar thermoplastic components are joined under heat and pressure. A dimensionally-stable and permanent bond arises after cooling.

Extrusion welding

With extrusion welding, an extruded filler material consisting of a plastic similar to the component is used to join the joint surfaces. The extruded material is applied with a molding shoe to the joint surfaces heated with hot air and then pressed. G.W.P. uses extrusion welding as a manual welding procedure to join plastic components with thick walls. The advantages of hot gas extrusion welding are very high strength and high weld seam quality.

Advantages of Extrusion Welding

• For parts with wall thicknesses up to 30mm
• Very high strength of the weld
• Low residual stress
• Processing according to DIN 1910-3

Other plastic welding methods

• Hotplate welding
• Ultrasonic welding