Welding of Thermoplastic Composites Using Vacuum-Bagging, Air-Cooling, and Induction


Reference #: 01292

The University of South Carolina is offering licensing opportunities for the welding of thermoplastic composites using vacuum-bagging, air-cooling and induction.



Welding of thermoplastic composites needs both pressure and temperature. This pressure can be generated using compaction rollers or mechanical pressure from a tool block or a pressurized tube/bag. Induction welding of composite parts is currently done with very expensive and heavy tools. High non-recurring costs hamper the application of induction welding in the composite structure industry.


Invention Description:

The invention provides a method for simple and economical positioning of two workpieces for welding. Once positioned, a weld can be created using induction heating to melt the polymer in the composite. Air can be blown onto the surface to limit the welding to an area close to the mating surface of the workpieces, preventing any melting that would deteriorate the quality of the outer surface.


Potential Applications:

- Wind turbine blades

- Control surfaces of aircraft

- Floor panels for trucks, aircraft including helicopters

- Ship decks


Advantages and Benefits:

This invention reduces non-recurring costs while increases efficiency, allowing for a simpler process that can enable the welding of more complex parts.


Patent Information:
Title App Type Country Serial No. Patent No. File Date Issued Date Expire Date Patent Status
Welding and Consolidation of Thermoplastic Composites Using Vacuum Bagging, Air Cooling and Induction Utility United States 16/569,760   9/13/2019     Filed
For Information, Contact:
Technology Commercialization
University of South Carolina
Michel Van Tooren
Burton Rhodes
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