Microstructured materials
AssigneeU.S. Army Research Laboratory ATTN: RDRL-LOC-I
InventorsEric D. Wetzel, Larry R. Holmes, JR., Ricardo X. Rodriguez, Patrick M. Toal, JR.
Life of this patent
Estimating the term…
Loading patent…
AssigneeU.S. Army Research Laboratory ATTN: RDRL-LOC-I
InventorsEric D. Wetzel, Larry R. Holmes, JR., Ricardo X. Rodriguez, Patrick M. Toal, JR.
Estimating the term…
A thermoplastic filament comprising multiple polymers of differing flow temperatures in a regular geometric arrangement, and a method for producing such a filament, are described. Because of the difference in flow temperatures, there exists a temperature range at which one polymer is mechanically stable while the other is flowable. This property is extremely useful for creating thermoplastic monofilament feedstock for three-dimensionally printed parts, wherein the mechanically stable polymer enables geometric stability while the flowable polymer can fill gaps and provide strong bonding and homogenization between deposited material lines and layers. These multimaterial filaments can be produced via thermal drawing from a thermoplastic preform, which itself can be three-dimensionally printed. Furthermore, the preform can be printed with precisely controlled and complex geometries, enabling the creation of monofilament and fiber with unique decorative or functional properties.
A filament or preform comprising at least a first thermoplastic polymer and a second thermoplastic polymer, the first thermoplastic polymer and the second thermoplastic polymer physically associated in a geometric arrangement
A filament or preform comprising a first thermoplastic polymer and a second thermoplastic polymer, the first thermoplastic polymer and the second thermoplastic polymer physically associated in a geometric arrangement
A process for creating a polymer filament, said process comprising:
A process for creating a polymer filament, said process comprising:
A device for creating a filament, said device comprising:
A device for creating a filament, said device comprising:
Dependencies are inferred from the claim text.