Back to results
US 11,891,513 B2Granted
Thiol-ene silicone additive fabrication
AssigneeFormlabs, Inc.
InventorAlexander Philip Haring
Life of this patent
Estimating the term…
Abstract
Methods and compositions for additive manufacturing of silicone parts are provided. The methods can use SLA printing techniques to print silicone parts that exhibit excellent hardness, tear strength and elongation at break. The parts can be produced by using low dosages of radiation. In various embodiments, the silicone compositions include a mercapto-derivatized polysiloxane having two or more functional groups, an alkenyl-derivatized polysiloxane, and a photo-initiator.
Claims32
An additive method of producing a three-dimensional (3D) object, the method comprising:
- providing a photocurable silicone composition in a vessel of an additive fabrication device;
- irradiating a layer of the photocurable silicone composition with an energy source to form an at least partially cured layer of the photocurable silicone composition on a build platform of the additive fabrication device or on a previously cured layer of the photocurable silicone composition;
- wherein the photocurable silicone composition comprises:
- a mercapto-derivatized polysiloxane having two or more functional groups;
- an alkenyl-derivatized polysiloxane;
- and
- a photo-initiator.
4 more elements
Dependencies are inferred from the claim text.