Invention Grant
- Patent Title: System and method for roll-to-roll film tensioning for reduced separation force during bottom-up stereolithography
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Application No.: US17028543Application Date: 2020-09-22
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Publication No.: US11623396B2Publication Date: 2023-04-11
- Inventor: Eric B. Duoss , James Oakdale , Nicholas Anthony Rodriguez , Hongtao Song , Richard Crawford , Carolyn Seepersad , Morgan Chen
- Applicant: Lawrence Livermore National Security, LLC , Board of Regents, The University of Texas System
- Applicant Address: US CA Livermore; US TX Austin
- Assignee: Lawrence Livermore National Security, LLC,Board of Regents, The University of Texas System
- Current Assignee: Lawrence Livermore National Security, LLC,Board of Regents, The University of Texas System
- Current Assignee Address: US CA Livermore; US TX Austin
- Agency: Harness, Dickey & Pierce, P.L.C.
- Main IPC: B29C64/245
- IPC: B29C64/245 ; B33Y30/00 ; B33Y50/02 ; B29C64/264 ; B29C64/393 ; B29C64/214 ; B29C64/124

Abstract:
The present disclosure relates to a tensioning system for use in a stereolithography manufacturing application. The system may have a build plate for supporting a three dimensional part being formed using a photo responsive resin, a base plate and a release element extending over the base plate. The release element is configured to receive a quantity of photo responsive resin for forming a new material layer of the three dimensional part. A pair of tensioning components are secured to opposite ends of the release element, and apply a controlled tension force to the release element during peeling of the release element to reduce a separation force required to separate the release element from the new material layer after the new material layer is cured.
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