Improved Fused Filament Deposition 3D Printing Using Filaments Coated With Thermoreversible Thermosets

Case ID:

This invention demonstrates a new polymer to coat the spool of thermoplastic filament used in fused deposition modeling (FDM) 3D printing with a thermoreversible thermoset. The goal is to provide a layer that will liquefy in the hot printer nozzle to produce a lower viscosity liquid polymer. This coats the melted filament and increases the wetting and adhesion between layers, ultimately creating a stronger end product that will hold together well.


FDM 3D printing is the most common 3D printing technique. In FDM printing, a spool of thermoplastic filament is used and placed in continuous layers. However, a huge problem that remains unsolved is the poor wetting and increased porosity between layers, which results in a weak final product.



  • FDM 3D Printing


  • Limits the deformation of the 3D structure by alleviating poor adhesion
  • Limits residual, hazardous organic solvents, making an environmentally friendly product
Patent Information:
Contact For More Information:
Tariq Ahmed
Sr Licensing Manager, College of Engineering
The University of Arizona
Lead Inventor(s):
Douglas Loy
Piaoran Ye
Krishna Muralidharan
Barrett Potter, Jr.