EP2706133A1 - Procédé destiné à la fabrication dýune fibre de viscose - Google Patents

Procédé destiné à la fabrication dýune fibre de viscose Download PDF

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Publication number
EP2706133A1
EP2706133A1 EP12183422.0A EP12183422A EP2706133A1 EP 2706133 A1 EP2706133 A1 EP 2706133A1 EP 12183422 A EP12183422 A EP 12183422A EP 2706133 A1 EP2706133 A1 EP 2706133A1
Authority
EP
European Patent Office
Prior art keywords
viscose
fibers
spinning
viscose fibers
fibers according
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.)
Withdrawn
Application number
EP12183422.0A
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German (de)
English (en)
Inventor
Roland Scholz
Ingo Bernt
Bernd Probst
Haio Harms
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kelheim Fibres GmbH
Original Assignee
Kelheim Fibres GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kelheim Fibres GmbH filed Critical Kelheim Fibres GmbH
Priority to EP12183422.0A priority Critical patent/EP2706133A1/fr
Priority to PCT/EP2013/066887 priority patent/WO2014037191A1/fr
Publication of EP2706133A1 publication Critical patent/EP2706133A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • D01D5/253—Formation of filaments, threads, or the like with a non-circular cross section; Spinnerette packs therefor
    • 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
    • D01F2/06—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from viscose
    • D01F2/08—Composition of the spinning solution or the bath

Definitions

  • the present invention relates to a process for the production of viscose fibers and viscose fibers obtainable by the process according to the invention.
  • the invention further relates to the use of the viscose fibers according to the invention in a nonwoven and to a nonwoven which contains viscose fibers according to the invention.
  • the cross-section of conventional viscose fibers that is fibers spun from a conventional viscose spinning composition through round-section spinning holes into a spinning bath of conventional composition, is irregular and lobed / corrugated due to various effects caused by coagulation and regeneration of the cellulose.
  • EP 11191093.1 describes the production of viscose flax fibers by spinning from jet holes of flat cross-section using a dope containing a coagulation retarder, especially polyethylene glycol (PEG).
  • a coagulation retarder especially polyethylene glycol (PEG).
  • a field of use of viscose fibers are nonwovens, e.g. hydroentangled nonwovens for use as wipes in the hygiene sector.
  • nonwovens can be used in disposal, e.g. Do not block the sewage system via toilet flushes. It is therefore necessary that the nonwovens on the one hand in the dry or wet state have sufficient strength and on the other hand dissolve as much as possible in the disposal of the sewage system, preferably in the individual fibers.
  • the WO 2006/134132 describes the use of Viskoseflachfasern in a fiber composite with the purpose to improve the solubility of the fiber composite in water.
  • novel viscose fibers with a special cross-sectional modification can be produced by a combination of certain process parameters in the viscose process.
  • a coagulation retarder in particular PEG, in certain concentration ranges in the viscose spinning mass is obviously important.
  • coagulation inhibitors are N-free polyoxyalkylene derivatives, N-free oxyethylated and N-containing oxyethylated compounds and N-containing compounds (amines, quaternary ammonium salts).
  • the coagulation retardant is preferably added to the viscose spinning composition immediately before spinning.
  • the filaments are spun into a spinning bath with a relatively high acid concentration (H 2 SO 4 ). This supports the coagulation of the fiber from the outside and thus causes a fixation of the geometry. Also important is the content of zinc sulfate in the spinning bath.
  • the remaining process parameters can be kept in the usual ranges for the viscose process.
  • the coagulation retarder it is possible to use a customary viscose spinning material.
  • a typical standard spinning viscose has while a content of cellulose of 8-10 wt.% And a content of NaOH of 5-9 wt.%.
  • the nozzle delay can be 1.0 to 3.0.
  • the stretching of the filaments after leaving the spinning bath can be from 10% to more than 40%.
  • the viscose fibers obtainable by the process according to the invention are standard viscose fibers, i. no modal fibers (as defined by the BISFA - Bureau for the International Standardization of Man-Made Fibers).
  • the viscose fibers according to the invention have very different, irregular multi-limbed and / or curved fiber cross-sections.
  • the viscose fibers according to the invention are characterized in that at least 50% of the fibers have a letter-shaped cross-section. Although not all cross sections of the fibers are directly attributable to a letter form, the cross sections convey the overall impression of a letter soup or alphabet pasta.
  • the fibers have multi-limbed cross sections in the form of letters such as E, F, H, L, I, J, L, C, U, V, S, N, M, W, Y and Z.
  • the cross-section of the spun fibers differs only slightly from conventional viscose fibers. Such fibers are in the FIG. 2 shown.
  • the proportion of fibers with a cavity in cross-section is less than 10%, preferably less than 5%, in the viscose fibers according to the invention.
  • the fibers are massive viscose fibers, not so about hollow fibers or collapsed hollow fibers such as from the US 4,129,679 known.
  • the viscose fibers of the invention are preferably also characterized in that the surface of the fibers is substantially smooth.
  • substantially smooth is meant, in particular, that the fiber has substantially no grooves in the longitudinal direction, which have a groove depth of more than 10%, in particular more than 5% of the fiber thickness.
  • grooves are to be understood that typical for standard viscose fibers, in relation to the width of the fiber small indentations in the longitudinal direction.
  • the viscose fibers according to the invention preferably have a titer of less than 5 dtex, preferably 1.3 to 3.3 dtex.
  • the viscose fibers of the present invention are in the form of staple fibers, i. as a multiplicity of cut fibers.
  • the cutting length can be 0.3 to 150 mm.
  • the viscose fibers according to the invention are outstandingly suitable for use in a nonwoven, in particular a hydroentangled nonwoven.
  • fibers with a cutting length of 3 to 20 mm, in particular 3 to 12 mm are suitable.
  • cutting lengths of 30 mm to 60 mm, in particular 30 mm to 40 mm are of interest.
  • the present invention also relates to a nonwoven comprising viscose fibers according to the invention.
  • the viscose fibers according to the invention may be present in the nonwoven in a proportion of up to 100%, preferably 50-100%.
  • the nonwovens can be produced by wet-laying processes as well as dry-laying processes such as airlaid and carding / carding.
  • the solidification can be carried out with the aid of binders and / or mechanical consolidation processes, preferably with needling and hydroentanglement.
  • nonwovens of viscose fibers according to the invention dissolve very quickly in water and do not clog wastewater pumps.
  • nonwovens according to the invention are preferably suitable for wipes and / or wet wipes, in particular in the hygiene sector.
  • the viscose fibers according to the invention are also outstandingly suitable for the production of yarns and nonwovens for textiles and clothing with comfort and thermo-regulating properties (insulation against cold and heat) and for the production of filter media.
  • fibers with a cut length of 30 to 150 mm, in particular 40 to 110 mm, particularly preferably 40 mm (cotton type) and 70 mm (wool type) are suitable for textile applications.
  • filter media in particular wet-laid nonwovens containing fibers with a cut length of 3 to 12 mm are suitable.
  • the denier of the spun fibers was 1.7 dtex in each case, the cut length 40 mm.
  • the cross sections of the spun fibers are in the FIGS. 1 to 4 (according to Examples 1 to 4).
  • FIG. 1 shows the typical irregular lobed cross sections of a conventional viscose fiber.
  • FIG. 2 shows hardly any changes in the cross sections compared to FIG. 1 ,
  • FIG. 3 is the clear expression of thighs and the formation of very different, especially letter-shaped cross sections (especially of "multi-legged" letter shapes such as E, F and H) can be seen.
  • the entirety of the cross sections gives the impression of a letter soup or of pasta noodles. It is also clear that the surface of the fibers compared to those of the Figures 1 and 2 is smoother.
  • Fibers having a basis weight of 50 g / l and having a titre of 1.7 dtex and cutting lengths of 12, 16 and 20 mm were produced from fibers according to the invention which had been produced in the viscose spinning composition using 3.9% PEG based on cellulose. m 2 produced.
  • the dissolution properties of these nonwovens in water were determined by means of a tube test and a pump test and compared with the dissolution property of nonwovens of other viscose fibers.
  • the tube test was based on the " Guidance Document for Assessing the Fluxability of Nonwoven Consumer Products, EDANA and INDA, 2nd Edition, 2009 ", the pump test is carried out completely according to this document.
  • the nonwovens of the fibers according to the invention showed excellent dissolution properties and behaved better, in particular, than nonwovens made of viscose flat fibers.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Artificial Filaments (AREA)
EP12183422.0A 2012-09-07 2012-09-07 Procédé destiné à la fabrication dýune fibre de viscose Withdrawn EP2706133A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP12183422.0A EP2706133A1 (fr) 2012-09-07 2012-09-07 Procédé destiné à la fabrication dýune fibre de viscose
PCT/EP2013/066887 WO2014037191A1 (fr) 2012-09-07 2013-08-13 Procédé de fabrication de fibres de viscose

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12183422.0A EP2706133A1 (fr) 2012-09-07 2012-09-07 Procédé destiné à la fabrication dýune fibre de viscose

Publications (1)

Publication Number Publication Date
EP2706133A1 true EP2706133A1 (fr) 2014-03-12

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP12183422.0A Withdrawn EP2706133A1 (fr) 2012-09-07 2012-09-07 Procédé destiné à la fabrication dýune fibre de viscose

Country Status (2)

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EP (1) EP2706133A1 (fr)
WO (1) WO2014037191A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110144633A (zh) * 2019-05-29 2019-08-20 新乡化纤股份有限公司 一种粘胶细旦特种纤维30d/4f扁平纤维的成型工艺

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013218412A1 (de) 2013-09-13 2015-03-19 Kelheim Fibres Gmbh Filterhilfsmittel und Filterschicht

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2962341A (en) * 1956-05-14 1960-11-29 Du Pont Viscose modification
US3843378A (en) * 1972-10-16 1974-10-22 Fmc Corp Regenerated cellulose-polyethylene glycol high fluid-holding fiber mass
US4129679A (en) 1969-11-27 1978-12-12 Courtaulds Limited Multi-limbed regenerated cellulose filaments
US4388260A (en) 1979-03-16 1983-06-14 Avtex Fibers Inc. Method of making viscose rayon
WO1989001062A1 (fr) * 1987-07-30 1989-02-09 Courtaulds Plc Fibre cellulosique
EP1119109A1 (fr) 2000-01-18 2001-07-25 Samsung Electronics Co., Ltd. Décodeur de modulation codée en treillis et concaténée à largeur de bande efficace et méthode de décodage correspondante
WO2004005595A1 (fr) 2002-07-09 2004-01-15 Lenzing Aktiengesellschaft Procede de fabrication de fibres de viscose regenerees, solides
WO2004085720A1 (fr) * 2003-03-27 2004-10-07 Lenzing Aktiengesellschaft Fibre de viscose standard regeneree solide
WO2006134132A1 (fr) 2005-06-15 2006-12-21 Kelheim Fibres Gmbh Composite fibreux pouvant etre dissous ou decompose dans l'eau et produit obtenu a partir dudit composite

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2962341A (en) * 1956-05-14 1960-11-29 Du Pont Viscose modification
US4129679A (en) 1969-11-27 1978-12-12 Courtaulds Limited Multi-limbed regenerated cellulose filaments
US3843378A (en) * 1972-10-16 1974-10-22 Fmc Corp Regenerated cellulose-polyethylene glycol high fluid-holding fiber mass
US4388260A (en) 1979-03-16 1983-06-14 Avtex Fibers Inc. Method of making viscose rayon
WO1989001062A1 (fr) * 1987-07-30 1989-02-09 Courtaulds Plc Fibre cellulosique
EP1119109A1 (fr) 2000-01-18 2001-07-25 Samsung Electronics Co., Ltd. Décodeur de modulation codée en treillis et concaténée à largeur de bande efficace et méthode de décodage correspondante
WO2004005595A1 (fr) 2002-07-09 2004-01-15 Lenzing Aktiengesellschaft Procede de fabrication de fibres de viscose regenerees, solides
WO2004085720A1 (fr) * 2003-03-27 2004-10-07 Lenzing Aktiengesellschaft Fibre de viscose standard regeneree solide
WO2006134132A1 (fr) 2005-06-15 2006-12-21 Kelheim Fibres Gmbh Composite fibreux pouvant etre dissous ou decompose dans l'eau et produit obtenu a partir dudit composite

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
"Guidance Document für Assessing the Flushability of Nonwoven Consumer Products, EDANA and INDA, 2", 2009
GÖTZE: "Chemiefasern nach dem Viskoseverfahren", 1940, pages: 428 - 435
HERZOG, TEXTILE FORSCHUNG, vol. 8, 1926, pages 87 - 93

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110144633A (zh) * 2019-05-29 2019-08-20 新乡化纤股份有限公司 一种粘胶细旦特种纤维30d/4f扁平纤维的成型工艺

Also Published As

Publication number Publication date
WO2014037191A1 (fr) 2014-03-13

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