US 12,031,234 B2
System and method of dosing a polymer mixture with a first solvent, device, system and method of extracting solvent from at least one polymeric yarn, system and method of mechanical pre-recovery of at least one liquid in at least one polymeric yarn, and continuous system and method for producing at least one polymeric yarn
Marcos Roberto Paulino Bueno, Sao Paulo—SP (BR); Andre Penaquioni, Sao Paulo—SP (BR); Alessandro Bernardi, Sao Paulo—SP (BR); Sergio Luiz Dias Almeida, Sao Paulo—SP (BR); Leandro Ohara Oliveira Santa Rosa, Sao Paulo—SP (BR); Patricia Freitas Oliveira Fialho, Sao Paulo—SP (BR); and Daniela Zaira Rauber, Sao Paulo—SP (BR)
Assigned to Braskem America, Inc., Philadelphia, PA (US)
Filed by Braskem America, Inc., Philadelphia, PA (US)
Filed on Oct. 2, 2023, as Appl. No. 18/479,398.
Application 16/824,775 is a division of application No. 15/032,826, granted, now 11,124,895, issued on Sep. 21, 2021, previously published as PCT/BR2014/050004, filed on Oct. 29, 2014.
Application 18/479,398 is a continuation of application No. 16/824,775, filed on Mar. 20, 2020, granted, now 11,866,849.
Claims priority of provisional application 61/896,911, filed on Oct. 29, 2013.
Prior Publication US 2024/0026571 A1, Jan. 25, 2024
Int. Cl. D01D 1/02 (2006.01); B29B 7/00 (2006.01); B29B 7/46 (2006.01); B29B 7/72 (2006.01); B29B 7/74 (2006.01); B29C 43/00 (2006.01); B29C 48/00 (2019.01); B29C 48/05 (2019.01); B29C 48/29 (2019.01); B29C 48/793 (2019.01); D01D 1/06 (2006.01); D01D 1/09 (2006.01); D01D 5/06 (2006.01); D01D 5/088 (2006.01); D01D 5/16 (2006.01); D01D 10/06 (2006.01); D01D 13/00 (2006.01); D01F 13/00 (2006.01); D07B 1/02 (2006.01); B29B 7/44 (2006.01); B29C 48/86 (2019.01); B29C 48/88 (2019.01); B29C 48/91 (2019.01); D01F 6/04 (2006.01); D06B 15/00 (2006.01)
CPC D01D 1/02 (2013.01) [B29B 7/007 (2013.01); B29B 7/46 (2013.01); B29B 7/726 (2013.01); B29B 7/749 (2013.01); B29C 43/00 (2013.01); B29C 48/0018 (2019.02); B29C 48/05 (2019.02); B29C 48/29 (2019.02); B29C 48/793 (2019.02); D01D 1/06 (2013.01); D01D 1/09 (2013.01); D01D 5/06 (2013.01); D01D 5/088 (2013.01); D01D 5/16 (2013.01); D01D 10/06 (2013.01); D01D 13/00 (2013.01); D01F 13/00 (2013.01); D07B 1/025 (2013.01); B29B 7/44 (2013.01); B29B 7/7461 (2013.01); B29C 48/86 (2019.02); B29C 48/91 (2019.02); B29C 48/919 (2019.02); D01F 6/04 (2013.01); D06B 15/00 (2013.01); D07B 2201/2009 (2013.01); D07B 2205/2014 (2013.01); D07B 2501/2061 (2013.01); D10B 2321/0211 (2013.01); Y02P 70/62 (2015.11)] 3 Claims
OG exemplary drawing
 
1. A system for dosing a polymer mixture with a first solvent in an extruder comprising at least two inertization devices including means for introducing an inertization gas flow, wherein the at least two inertization devices feed the extruder with a homogenized and inertized mixture, the system being characterized by further comprising (a) a feeding control device adapted to control the homogenized and inertized mixture level above an extruder screw, such that rotation is sufficient not to segregate phases in the mixture, and (b) a dosing device, designed to accumulate part of the homogenized and inertized mixture from at least one inertization device before feeding the extruder;
wherein the dosing device drives the homogenized and inertized mixture from the inertization device to a feeding zone of the extruder at a temperature below 60° C.