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EP2732081A1 - Faisceau de fibres - Google Patents

Faisceau de fibres

Info

Publication number
EP2732081A1
EP2732081A1 EP12730930.0A EP12730930A EP2732081A1 EP 2732081 A1 EP2732081 A1 EP 2732081A1 EP 12730930 A EP12730930 A EP 12730930A EP 2732081 A1 EP2732081 A1 EP 2732081A1
Authority
EP
European Patent Office
Prior art keywords
legs
fibers
fiber bundle
length
asymmetric
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Withdrawn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
EP12730930.0A
Other languages
German (de)
English (en)
Inventor
Ingo Bernt
Matthew North
Reinhold RÖTHENBACHER
Walter Roggenstein
Roland Scholz
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 EP12730930.0A priority Critical patent/EP2732081A1/fr
Publication of EP2732081A1 publication Critical patent/EP2732081A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B16/00—Regeneration of cellulose
    • 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
    • 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

Definitions

  • the present invention relates to a fiber bundle containing a plurality of regenerated cellulose fiber obtained by the viscose method.
  • fiber bundle is meant a plurality of fibers, e.g. Cell wool (a variety of staple fibers), a strand of continuous filaments or a bale of fibers.
  • fibers having a particularly high liquid storage capacity are desirable in order to allow the highest possible absorption capacity of the hygiene product.
  • Viscose fibers and cotton The specific absorbent capacity of these fibers is about 4.0 g / g for cotton, 4.5 g / g for ordinary viscose, and 5.2 g / g for trilobal viscose fibers according to the so-called Syngina test described below.
  • the goal of the tampon manufacturer is to use a minimum of effort
  • multi-limbed fibers obtained by the use of spinnerets with multi-limbed extrusion holes having at least 3 legs with a length-to-width ratio of 2: 1 to 10: 1, such as
  • TSS toxic shock syndrome
  • multi-legged fibers have increased absorbency as compared to viscose fibers of the prior art, especially in tampons, and that such fibers must have at least 3 legs and that each leg of these fibers must have a length to width ratio of at least 2: 1, most preferably from 3: 1 to 5: 1.
  • WO 2004/085720 A discloses a massive regenerated standard viscose fiber which has a cross section whose area is reduced by a factor of less than 2.50 times, preferably less than 2.40 times, particularly preferably less than 2.25 times. times larger than the area of the largest equilateral triangle inscribed in this cross section, and which has a subsequently defined Syngina absorbance of greater than 6.0 g / g fiber.
  • WO 2004/005595 A describes an absorbent standard viscose fiber with an irregular lobed cross section. Other viscose fibers with irregular
  • No. 6,403,217 Bl describes a wide variety of nozzle configurations for the production of fibers with modified fiber cross sections by the melt spinning method.
  • Melt-spinning processes differ fundamentally from the wet-spinning process used in the viscose process.
  • crimping of the fibers is advantageous.
  • mechanically curl fibers It is also known to vary the fiber production process so that inhomogeneous fiber formation occurs.
  • Viscose fibers have not been used or have been inadequate.
  • a fiber bundle comprising a multiplicity of regenerated multi-limbed cellulose fibers whose cross-section has three or more limbs, and which is characterized in that at least 10%, preferably at least 20%, especially preferably at least 50% of the multi-limbed cellulose fibers are asymmetric fibers, in which at least one of the legs deviates in length from the other legs and in which the length of one or more legs is greater by a factor of 2 to 10 than the length of the shortest one or more leg (s).
  • Cellulose fiber and the fiber bundle according to the invention are Cellulose fiber and the fiber bundle according to the invention.
  • Figure 1 shows the attachment of two conventional fibers with trilobal cross section.
  • Figure 2 shows the attachment of two fiction, contemporary fibers with different leg lengths.
  • FIG. 3 shows the arrangement of several conventional trilobal cross-section fibers, assuming a packing of the coordination number 6.
  • Figure 4 shows the resulting by a completely asymmetric design of fibers steric hindrance on addition of several fiction, contemporary fibers.
  • Figure 5 shows a fiber consisting of two trilobal basic forms connected together at the ends of one of their legs.
  • the present invention is based on the finding that with a change in the leg length and / or width of at least one leg of a multi-stranded viscose fiber, the packing density of the fibers can be reduced with the same degree of compression compared to conventional trilobal viscose fibers.
  • fibers in which at least one leg deviates from the other legs in terms of its length in the above-mentioned ratio are referred to as "asymmetric". Fibers having, for example, two legs of equal length and one leg which is longer than the two other legs (in which only one leg deviates from the other legs), are also included under the name "asymmetric" for the purposes of the present invention (US Pat. even if they can still have at least one axis of symmetry).
  • asymmetric cellulose fiber in the case of the asymmetric cellulose fiber according to the invention, all their legs differ from each other in their length.
  • these fibers are referred to as "completely asymmetric" cellulosic fibers.
  • contemporary fiber bundles are at least 10%, preferably at least 20%, more preferably at least 50% of the multi-limb fibers contained therein asymmetric fibers.
  • all of the fibers contained in the fiber bundle are asymmetric fibers.
  • the cross section of all asymmetric fibers contained in the fiber bundle is substantially the same.
  • the fiber bundle may contain other fibers, eg non-multi-limbed cellulose fibers, but also fibers of other provenance, such as from other polymers.
  • the multi-limb fibers according to the invention preferably have a Y-shaped, ie "trilobal" cross section, and other cross sections, such as X-shaped cross sections, are also possible.
  • contemporary fiber bundles may differ in each of the asymmetric cellulose fibers at least one of the legs also in terms of its width from the other legs.
  • the width of one or more legs may be greater by a factor of 1.1 to 5 than the width of the narrowest leg.
  • the angle between the legs of the asymmetric cellulose fibers may be from 80 ° to 140 °.
  • the titer of the asymmetric cellulose fibers may be from 1.3 dtex to 10 dtex.
  • the asymmetric cellulose fibers may be in the form of staple fibers, filament fibers or short cut fibers.
  • Basic forms are connected to each at least one of its leg ends with the leg end of another basic shape.
  • the length of the connecting leg resulting from the connection of the two limb ends is preferably by a factor of at least 1.5, preferably 1.5 to 2.0, longer than the length of the shortest of the other limbs. It has been found that in the case of multi-limbed cellulose fibers, merely increasing the fiber titer by spinning a thicker fiber, while the cross-sectional shape remains the same, does not produce improved absorbency properties of the fibers.
  • a cellulose fiber formed from a plurality of multi-limbed basic forms solves this problem by multiplying the fiber cross-section instead of increasing the titer by proportionally increasing the fiber cross-section. It is thus connected to several multi-leg asymmetric basic shapes together at their leg ends, so that a larger fiber thus resulting in higher titer.
  • the method for producing a fiber bundle according to the invention comprises the steps
  • all openings of the spinneret have three or more legs, and is characterized in that at least 10% of the openings are asymmetrical openings in which at least one of the legs deviates in length and / or width from the other legs, wherein the length of one or more several legs of the openings by a factor of 2 to 10 is greater than the length of the shortest leg or (s).
  • all openings are asymmetrical openings.
  • all legs differ in length from each other.
  • the method of the invention may comprise the step of mixing the asymmetric fibers produced by the process with other fibers, e.g. symmetrical multi-legged fibers (in which therefore the length or width of all legs is substantially equal), non-legged fibers and / or fibers of others
  • other fibers e.g. symmetrical multi-legged fibers (in which therefore the length or width of all legs is substantially equal), non-legged fibers and / or fibers of others
  • Provenance such as from other polymers.
  • a mixture of asymmetric and symmetric multi-limbed fibers can also be achieved by spinning through a spinneret, the multi-limbed openings of which are in part asymmetrical and in part symmetrical.
  • the multi-limbed openings of which are in part asymmetrical and in part symmetrical.
  • the present invention also relates to the use of an inventive
  • Tampon plugs each having the same length but different density pressed. The plugs then measured Syngina absorption (according to WSP 351.0).
  • Suction body has formed, leading to a higher absorption. While in the denser structure, with the greater number of fibers already in parallel, it is easier to "collapse” the fibers, the further spacing of the fibers in the less dense structure makes it easier to " open "pores in which liquid can be stored.
  • Figure 1 shows two fully symmetrical Y-fibers 1, 2, in which all legs are substantially equal in length and the same width. These fibers can be very close together.
  • FIG. 2 shows a juxtaposition of two such fibers 1 'and 2' (in this case, the longer legs are drawn through to illustrate, and the two shorter legs are shown hatched).
  • the largest length: width ratio of the wings is therefore not larger in this example than in Example 2.
  • FIG. 5 shows a fiber composed of two trilobal basic shapes 1 ", 2" (which are shown in black or white for illustration purposes) connected to one another at the ends of one of their legs.
  • the basic shapes shown in Figure 5 are completely symmetrical, but may also be asymmetric. This results in one out of two (resp.
  • basic forms composed asymmetric cellulose fiber with a higher titer and - compared to fibers with a higher titer consisting of only one multi-limbed basic form - increased absorbency.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Textile Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Biochemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Artificial Filaments (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Abstract

L'invention concerne un faisceau de fibres contenant une pluralité de fibres cellulosiques (1', 2') régénérées à plusieurs branches dont la section transversale comprend trois branches ou plus. Le faisceau de fibres selon l'invention est caractérisé en ce qu'au moins 10 %, de préférence au moins 20 %, de préférence encore au moins 50 % des fibres cellulosiques à plusieurs branches sont des fibres asymétriques, pour lesquelles au moins une des branches est différente des autres branches en ce qui concerne sa longueur et pour lesquelles la longueur d'une ou de plusieurs branches est supérieure d'un facteur de 2 à 10 à la longueur de la ou des branches les plus courtes.
EP12730930.0A 2011-07-15 2012-06-26 Faisceau de fibres Withdrawn EP2732081A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12730930.0A EP2732081A1 (fr) 2011-07-15 2012-06-26 Faisceau de fibres

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP11174141A EP2546396A1 (fr) 2011-07-15 2011-07-15 Faisceau de fibres
EP12730930.0A EP2732081A1 (fr) 2011-07-15 2012-06-26 Faisceau de fibres
PCT/EP2012/062375 WO2013010760A1 (fr) 2011-07-15 2012-06-26 Faisceau de fibres

Publications (1)

Publication Number Publication Date
EP2732081A1 true EP2732081A1 (fr) 2014-05-21

Family

ID=46420164

Family Applications (2)

Application Number Title Priority Date Filing Date
EP11174141A Withdrawn EP2546396A1 (fr) 2011-07-15 2011-07-15 Faisceau de fibres
EP12730930.0A Withdrawn EP2732081A1 (fr) 2011-07-15 2012-06-26 Faisceau de fibres

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP11174141A Withdrawn EP2546396A1 (fr) 2011-07-15 2011-07-15 Faisceau de fibres

Country Status (9)

Country Link
US (1) US20140148590A1 (fr)
EP (2) EP2546396A1 (fr)
JP (1) JP2014520973A (fr)
KR (1) KR20140039283A (fr)
CN (1) CN103649387A (fr)
AU (1) AU2012286156A1 (fr)
BR (1) BR112014000490A2 (fr)
CA (1) CA2839233A1 (fr)
WO (1) WO2013010760A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2546397A1 (fr) * 2011-07-15 2013-01-16 Kelheim Fibres GmbH Fibre de cellulose régénérée
DE102014011372A1 (de) * 2014-08-05 2016-02-11 Fitesa Germany Gmbh Aufnahme- und Verteilungsschicht für eine aufzunehmende Flüssigkeit und daraus hergestellte Produkte
CN118370655B (zh) * 2024-06-25 2024-11-15 浙江夕尔科技有限公司 卫生棉条及其吸收芯体

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4129679A (en) 1969-11-27 1978-12-12 Courtaulds Limited Multi-limbed regenerated cellulose filaments
GB1333047A (en) 1969-11-27 1973-10-10 Courtaulds Ltd Process for making filaments
JPS5766754A (en) 1980-10-15 1982-04-23 Kao Corp Tampon
ATE77417T1 (de) * 1987-07-30 1992-07-15 Courtaulds Plc Cellulosefaser.
GB2208277B (en) 1987-07-30 1991-11-13 Courtaulds Plc Cellulosic fibre
US6103376A (en) 1996-08-22 2000-08-15 Eastman Chemical Company Bundles of fibers useful for moving liquids at high fluxes and acquisition/distribution structures that use the bundles
ATE404716T1 (de) 2002-07-09 2008-08-15 Chemiefaser Lenzing Ag Verfahren zur herstellung von regenerierten viskosefasern
AT412654B (de) 2003-03-27 2005-05-25 Chemiefaser Lenzing Ag Massive regenerierte standardviskosefaser

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2013010760A1 *

Also Published As

Publication number Publication date
JP2014520973A (ja) 2014-08-25
EP2546396A1 (fr) 2013-01-16
CA2839233A1 (fr) 2013-01-24
US20140148590A1 (en) 2014-05-29
WO2013010760A1 (fr) 2013-01-24
CN103649387A (zh) 2014-03-19
AU2012286156A1 (en) 2014-01-16
KR20140039283A (ko) 2014-04-01
BR112014000490A2 (pt) 2017-02-21

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