CA3226776A1 - Methode de production de fibres cellulosiques regenerees - Google Patents
Methode de production de fibres cellulosiques regenerees Download PDFInfo
- Publication number
- CA3226776A1 CA3226776A1 CA3226776A CA3226776A CA3226776A1 CA 3226776 A1 CA3226776 A1 CA 3226776A1 CA 3226776 A CA3226776 A CA 3226776A CA 3226776 A CA3226776 A CA 3226776A CA 3226776 A1 CA3226776 A1 CA 3226776A1
- Authority
- CA
- Canada
- Prior art keywords
- fibers
- fiber tow
- bath
- cut
- fiber layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000835 fiber Substances 0.000 title claims abstract description 305
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 21
- 230000015271 coagulation Effects 0.000 claims abstract description 90
- 238000005345 coagulation Methods 0.000 claims abstract description 90
- 238000000034 method Methods 0.000 claims abstract description 63
- 229920002678 cellulose Polymers 0.000 claims abstract description 57
- 239000001913 cellulose Substances 0.000 claims abstract description 57
- 238000009987 spinning Methods 0.000 claims abstract description 47
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 45
- 238000012545 processing Methods 0.000 claims abstract description 24
- 150000003839 salts Chemical class 0.000 claims abstract description 22
- 238000003825 pressing Methods 0.000 claims abstract description 19
- 239000003513 alkali Substances 0.000 claims abstract description 17
- 239000003125 aqueous solvent Substances 0.000 claims abstract description 7
- 238000005406 washing Methods 0.000 claims description 64
- 230000003750 conditioning effect Effects 0.000 claims description 57
- 239000007788 liquid Substances 0.000 claims description 43
- 238000012805 post-processing Methods 0.000 claims description 27
- 239000000463 material Substances 0.000 claims description 14
- 230000002378 acidificating effect Effects 0.000 claims description 12
- 238000004061 bleaching Methods 0.000 claims description 12
- 239000000047 product Substances 0.000 claims description 11
- 239000004753 textile Substances 0.000 claims description 11
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 9
- 230000003472 neutralizing effect Effects 0.000 claims description 8
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 238000004132 cross linking Methods 0.000 claims description 6
- 239000003431 cross linking reagent Substances 0.000 claims description 6
- 239000004744 fabric Substances 0.000 claims description 6
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 claims description 6
- 210000003666 myelinated nerve fiber Anatomy 0.000 claims description 6
- 239000004745 nonwoven fabric Substances 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 5
- 235000011054 acetic acid Nutrition 0.000 claims description 3
- 239000013067 intermediate product Substances 0.000 claims description 3
- 239000004310 lactic acid Substances 0.000 claims description 3
- 235000014655 lactic acid Nutrition 0.000 claims description 3
- 239000001117 sulphuric acid Substances 0.000 claims description 3
- 235000011149 sulphuric acid Nutrition 0.000 claims description 3
- -1 garments Substances 0.000 claims description 2
- 239000000243 solution Substances 0.000 description 21
- 239000002904 solvent Substances 0.000 description 15
- 239000000203 mixture Substances 0.000 description 14
- 235000011121 sodium hydroxide Nutrition 0.000 description 12
- 239000002994 raw material Substances 0.000 description 11
- 238000001125 extrusion Methods 0.000 description 10
- 238000002156 mixing Methods 0.000 description 10
- 229920000297 Rayon Polymers 0.000 description 8
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 8
- 239000000126 substance Substances 0.000 description 8
- 238000001816 cooling Methods 0.000 description 7
- 159000000000 sodium salts Chemical class 0.000 description 7
- 229920000875 Dissolving pulp Polymers 0.000 description 5
- 238000000265 homogenisation Methods 0.000 description 5
- 229920000742 Cotton Polymers 0.000 description 4
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 4
- 239000000654 additive Substances 0.000 description 4
- 238000013459 approach Methods 0.000 description 4
- 238000007380 fibre production Methods 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 4
- 238000004064 recycling Methods 0.000 description 4
- 229910000029 sodium carbonate Inorganic materials 0.000 description 4
- 235000017550 sodium carbonate Nutrition 0.000 description 4
- 229910052938 sodium sulfate Inorganic materials 0.000 description 4
- 235000011152 sodium sulphate Nutrition 0.000 description 4
- 230000032258 transport Effects 0.000 description 4
- 238000011144 upstream manufacturing Methods 0.000 description 4
- QGJOPFRUJISHPQ-UHFFFAOYSA-N Carbon disulfide Chemical compound S=C=S QGJOPFRUJISHPQ-UHFFFAOYSA-N 0.000 description 3
- 238000002788 crimping Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000006116 polymerization reaction Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 239000004627 regenerated cellulose Substances 0.000 description 3
- 229920003043 Cellulose fiber Polymers 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 2
- 229920000433 Lyocell Polymers 0.000 description 2
- LFTLOKWAGJYHHR-UHFFFAOYSA-N N-methylmorpholine N-oxide Chemical compound CN1(=O)CCOCC1 LFTLOKWAGJYHHR-UHFFFAOYSA-N 0.000 description 2
- 239000007832 Na2SO4 Substances 0.000 description 2
- 229920001131 Pulp (paper) Polymers 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 125000001931 aliphatic group Chemical group 0.000 description 2
- 125000000129 anionic group Chemical group 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 2
- 206010061592 cardiac fibrillation Diseases 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007865 diluting Methods 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 230000002600 fibrillogenic effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000002166 wet spinning Methods 0.000 description 2
- LBLYYCQCTBFVLH-UHFFFAOYSA-M 2-methylbenzenesulfonate Chemical compound CC1=CC=CC=C1S([O-])(=O)=O LBLYYCQCTBFVLH-UHFFFAOYSA-M 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- FERIUCNNQQJTOY-UHFFFAOYSA-M Butyrate Chemical compound CCCC([O-])=O FERIUCNNQQJTOY-UHFFFAOYSA-M 0.000 description 1
- FERIUCNNQQJTOY-UHFFFAOYSA-N Butyric acid Natural products CCCC(O)=O FERIUCNNQQJTOY-UHFFFAOYSA-N 0.000 description 1
- 229920000298 Cellophane Polymers 0.000 description 1
- BDAGIHXWWSANSR-UHFFFAOYSA-M Formate Chemical compound [O-]C=O BDAGIHXWWSANSR-UHFFFAOYSA-M 0.000 description 1
- AFVFQIVMOAPDHO-UHFFFAOYSA-N Methanesulfonic acid Chemical compound CS(O)(=O)=O AFVFQIVMOAPDHO-UHFFFAOYSA-N 0.000 description 1
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- SRSXLGNVWSONIS-UHFFFAOYSA-M benzenesulfonate Chemical compound [O-]S(=O)(=O)C1=CC=CC=C1 SRSXLGNVWSONIS-UHFFFAOYSA-M 0.000 description 1
- 229940077388 benzenesulfonate Drugs 0.000 description 1
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- QGJOPFRUJISHPQ-NJFSPNSNSA-N carbon disulfide-14c Chemical compound S=[14C]=S QGJOPFRUJISHPQ-NJFSPNSNSA-N 0.000 description 1
- 150000007942 carboxylates Chemical class 0.000 description 1
- 238000009960 carding Methods 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 125000001547 cellobiose group Chemical group 0.000 description 1
- 238000007385 chemical modification Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000011143 downstream manufacturing Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 150000004676 glycans Chemical class 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000002608 ionic liquid Substances 0.000 description 1
- 239000002655 kraft paper Substances 0.000 description 1
- 230000002535 lyotropic effect Effects 0.000 description 1
- 238000013386 optimize process Methods 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 239000010893 paper waste Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- UEZVMMHDMIWARA-UHFFFAOYSA-M phosphonate Chemical compound [O-]P(=O)=O UEZVMMHDMIWARA-UHFFFAOYSA-M 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000009666 routine test Methods 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 238000005185 salting out Methods 0.000 description 1
- 238000013341 scale-up Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007614 solvation Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
- D01F2/02—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from solutions of cellulose in acids, bases or salts
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D1/00—Treatment of filament-forming or like material
- D01D1/02—Preparation of spinning solutions
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
- D01D10/06—Washing or drying
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D13/00—Complete machines for producing artificial threads
- D01D13/02—Elements of machines in combination
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/06—Wet spinning methods
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/26—Formation of staple fibres
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F11/00—Chemical after-treatment of artificial filaments or the like during manufacture
- D01F11/02—Chemical after-treatment of artificial filaments or the like during manufacture of cellulose, cellulose derivatives, or proteins
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/04—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres having existing or potential cohesive properties, e.g. natural fibres, prestretched or fibrillated artificial fibres
- D04H1/06—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres having existing or potential cohesive properties, e.g. natural fibres, prestretched or fibrillated artificial fibres by treatment to produce shrinking, swelling, crimping or curling of fibres
- D04H1/067—Regenerated cellulose series
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/04—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres having existing or potential cohesive properties, e.g. natural fibres, prestretched or fibrillated artificial fibres
- D04H1/28—Regenerated cellulose series
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/02—Synthetic cellulose fibres
- D21H13/08—Synthetic cellulose fibres from regenerated cellulose
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2201/00—Cellulose-based fibres, e.g. vegetable fibres
- D10B2201/20—Cellulose-derived artificial fibres
- D10B2201/22—Cellulose-derived artificial fibres made from cellulose solutions
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Artificial Filaments (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
L'invention concerne un procédé et une installation de production destinés à la production de fibres cellulosiques régénérées. Une solution de filage est extrudée dans un bain de coagulation qui contient un sel et de préférence une base. La solution de filage comprend de la cellulose dissoute dans un solvant aqueux comprenant du NaOH et du ZnO et le bain de coagulation possède une valeur de pH d'au moins sept. L'installation de traitement comprend un dispositif de coupe pour couper le câble de fibres à l'état non séché en fibres coupées, un dispositif de formation de nappe pour suspendre les fibres coupées et les collecter sous la forme d'une couche de fibres non tissées, et au moins un dispositif de pressage pour presser la couche de fibres non tissées, ce qui impose une ondulation naturelle sur les fibres.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP21187680.0A EP4124681A1 (fr) | 2021-07-26 | 2021-07-26 | Procédé de production de fibres cellulosiques régénérées |
| EP21187680.0 | 2021-07-26 | ||
| PCT/EP2022/070609 WO2023006601A1 (fr) | 2021-07-26 | 2022-07-22 | Améliorations se rapportant au procédé alcalin à froid pour la production de fibres cellulosiques régénérées |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA3226776A1 true CA3226776A1 (fr) | 2023-02-02 |
Family
ID=77050915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA3226776A Pending CA3226776A1 (fr) | 2021-07-26 | 2022-07-22 | Methode de production de fibres cellulosiques regenerees |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20240229303A1 (fr) |
| EP (2) | EP4124681A1 (fr) |
| CN (1) | CN118043507A (fr) |
| CA (1) | CA3226776A1 (fr) |
| TW (1) | TW202314071A (fr) |
| WO (1) | WO2023006601A1 (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4368753A1 (fr) * | 2022-11-08 | 2024-05-15 | TreeToTextile AB | Tissu avec de la cellulose régénérée |
| WO2024102054A1 (fr) * | 2022-11-08 | 2024-05-16 | Treetotextile Ab | Tissu comportant de la cellulose régénérée |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PL83047B1 (en) * | 1970-07-21 | 1975-12-31 | Nitto Boseki Coltd | Process for producing highly crimped viscose rayon[gb1318122a] |
| US3720743A (en) * | 1970-10-20 | 1973-03-13 | Itt | Process for producing high performance crimped rayon staple fiber |
| GB9412500D0 (en) * | 1994-06-22 | 1994-08-10 | Courtaulds Fibres Holdings Ltd | Fibre manufacture |
| PL214565B1 (pl) * | 2009-05-14 | 2013-08-30 | Inst Biopolimerow I Wlokien Chemicznych | Sposób wytwarzania trudnopalnych włókien celulozowych |
| EP3231899A1 (fr) | 2016-04-14 | 2017-10-18 | TreeToTextile AB | Procédé et système pour la production d'une composition de solution à filer |
| EP3231901A1 (fr) | 2016-04-14 | 2017-10-18 | TreeToTextile AB | Procédé pour le filage de cellulose dissoute comprenant recuperer du liqueur de coagulation epuisee d'une solution de hydroxide de sodium comme solvant aqueux pour cellulose |
| EP3596133A4 (fr) | 2017-03-15 | 2021-01-27 | TreeToTextile AB | Fibres de cellulose régénérée filées à partir d'une solution à filer alcaline aqueuse |
| WO2020041256A1 (fr) * | 2018-08-23 | 2020-02-27 | Eastman Chemical Company | Articles de feuille désencrés recyclés |
| US11492756B2 (en) * | 2018-08-23 | 2022-11-08 | Eastman Chemical Company | Paper press process with high hydrolic pressure |
| SE544547C2 (en) | 2019-02-21 | 2022-07-12 | Treetotextile Ab | A process for wet spinning of cellulose fibers from an alkaline spin bath |
-
2021
- 2021-07-26 EP EP21187680.0A patent/EP4124681A1/fr not_active Withdrawn
-
2022
- 2022-07-22 CA CA3226776A patent/CA3226776A1/fr active Pending
- 2022-07-22 WO PCT/EP2022/070609 patent/WO2023006601A1/fr active Application Filing
- 2022-07-22 EP EP22754085.3A patent/EP4377503A1/fr active Pending
- 2022-07-22 US US18/292,610 patent/US20240229303A1/en active Pending
- 2022-07-22 CN CN202280065051.5A patent/CN118043507A/zh active Pending
- 2022-07-25 TW TW111127771A patent/TW202314071A/zh unknown
Also Published As
| Publication number | Publication date |
|---|---|
| EP4377503A1 (fr) | 2024-06-05 |
| WO2023006601A1 (fr) | 2023-02-02 |
| EP4124681A1 (fr) | 2023-02-01 |
| CN118043507A (zh) | 2024-05-14 |
| US20240229303A1 (en) | 2024-07-11 |
| TW202314071A (zh) | 2023-04-01 |
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