US 12,257,757 B2
Structured preforms for thermal drawing
Esmaeil Banaei, Orlando, FL (US); and Justin Boga, Orlando, FL (US)
Assigned to EVERIX INC., Orlando, FL (US)
Appl. No. 17/611,479
Filed by EVERIX INC., Orlando, FL (US)
PCT Filed May 15, 2020, PCT No. PCT/US2020/033195
§ 371(c)(1), (2) Date Nov. 15, 2021,
PCT Pub. No. WO2020/232376, PCT Pub. Date Nov. 19, 2020.
Claims priority of provisional application 63/024,892, filed on May 14, 2020.
Claims priority of provisional application 62/848,243, filed on May 15, 2019.
Prior Publication US 2022/0242025 A1, Aug. 4, 2022
Int. Cl. B32B 41/00 (2006.01); B29C 48/00 (2019.01); B29C 48/08 (2019.01); B29C 48/25 (2019.01); B29C 48/305 (2019.01); B29C 48/49 (2019.01); B29C 48/92 (2019.01); B32B 37/04 (2006.01); B32B 38/18 (2006.01); B29L 31/34 (2006.01)
CPC B29C 48/0021 (2019.02) [B29C 48/0022 (2019.02); B29C 48/08 (2019.02); B29C 48/266 (2019.02); B29C 48/305 (2019.02); B29C 48/49 (2019.02); B29C 48/92 (2019.02); B32B 37/04 (2013.01); B32B 38/1841 (2013.01); B29C 2948/92076 (2019.02); B29C 2948/92438 (2019.02); B29C 2948/92571 (2019.02); B29C 2948/92933 (2019.02); B29L 2031/3475 (2013.01); B32B 2457/20 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method of extruding a film comprising a preform stack, the preform stack including a plurality of layers including a current layer and a previous layer, the method comprising:
extruding the current layer through an extrusion die to an extrusion output; and coordinated with the extrusion,
translating a preform assembly platform relative to the extrusion output, such that the current layer falls onto a previous layer of the preform stack provided on the preform assembly platform, the previous layer also extruded through the extrusion die, and
pressing the extruding current layer on to the previous layer with a roller fixed in a position relative to the extrusion output, wherein the pressing occurs as the preform assembly platform translates its position.