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1. WO2020222258 - A PROCESS FOR MANUFACTURING LYOCELL FILAMENT YARN AND AN APPARATUS THEREOF

Publication Number WO/2020/222258
Publication Date 05.11.2020
International Application No. PCT/IN2020/050395
International Filing Date 30.04.2020
IPC
D01D 1/02 2006.01
DTEXTILES; PAPER
01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
DMECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF MAN-MADE FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
1Treatment of filament-forming or like material
02Preparation of spinning solutions
D01F 2/00 2006.01
DTEXTILES; PAPER
01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
FCHEMICAL FEATURES IN THE MANUFACTURE OF MAN-MADE FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
2Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
D01D 5/06 2006.01
DTEXTILES; PAPER
01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
DMECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF MAN-MADE FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
5Formation of filaments, threads, or the like
06Wet spinning methods
Applicants
  • ADITYA BIRLA SCIENCE AND TECHNOLOGY COMPANY PVT. LTD. [IN]/[IN]
  • GRASIM INDUSTRIES LTD. [IN]/[IN]
Inventors
  • MOHITE, Lalaso Vishnu
  • NAGARKAR, Shailesh Prakash
  • SHINGOTE, Santosh Shivaji
  • THAKRE, Shirish Sheshrao
  • DUTTA, Suvankar Madhusudan
  • KALE, Bandu Madhukar
  • SHARMA, Roop Kishore
  • LIMBANI, Manishkumar Govindbhai
  • PANKAJ, Srivastava
  • DAGUR, Harendra Singh
Agents
  • KAUL, Vrinda
Priority Data
20192101292730.04.2019IN
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) A PROCESS FOR MANUFACTURING LYOCELL FILAMENT YARN AND AN APPARATUS THEREOF
(FR) PROCÉDÉ DE FABRICATION DE FIL CONTINU DE LYOCELL ET APPAREIL ASSOCIÉ
Abstract
(EN)
The present invention relates to a process for manufacturing lyocell filament yarn with improved mechanical properties and an apparatus thereof. The process involves washing of filament yarn with sequential decrease in NMMO concentrations and filament yarn drying under relaxed conditions. Additionally, the present invention also provides a compact washing and drying apparatus that uses controlled air gap spinning thereby resulting in production of LFY under relaxed conditions and also having a higher mechanical properties & productivity.
(FR)
La présente invention concerne un procédé de fabrication d'un fil continu de Lyocell ayant des propriétés mécaniques améliorées et un appareil associé. Le procédé comprend le lavage d'un fil continu avec une diminution séquentielle des concentrations de NMMO et un séchage du fil continu dans des conditions assouplies. De plus, la présente invention concerne également un appareil compact de lavage et de séchage qui utilise un filage à jet d'air régulé, ce qui entraîne la production de LFY dans des conditions assouplies et présente également des propriétés mécaniques et une productivité supérieures.
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