WO2001031097A2 - Procede et dispositif ameliores permettant d'etirer des fragments de fibres animales - Google Patents

Procede et dispositif ameliores permettant d'etirer des fragments de fibres animales Download PDF

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Publication number
WO2001031097A2
WO2001031097A2 PCT/NZ2000/000212 NZ0000212W WO0131097A2 WO 2001031097 A2 WO2001031097 A2 WO 2001031097A2 NZ 0000212 W NZ0000212 W NZ 0000212W WO 0131097 A2 WO0131097 A2 WO 0131097A2
Authority
WO
WIPO (PCT)
Prior art keywords
sliver
stretching
fibres
wool
zone
Prior art date
Application number
PCT/NZ2000/000212
Other languages
English (en)
Other versions
WO2001031097A3 (fr
Inventor
Jack David Watt
Cornelis Jan Van Luijk
Julian Mark Watson
Gail Louise Krsinic
Original Assignee
Wool Research Organisation Of New Zealand (Inc)
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 Wool Research Organisation Of New Zealand (Inc) filed Critical Wool Research Organisation Of New Zealand (Inc)
Priority to AU13135/01A priority Critical patent/AU769950B2/en
Priority to NZ519233A priority patent/NZ519233A/xx
Priority to EP00975027A priority patent/EP1240368B1/fr
Priority to DE60028604T priority patent/DE60028604T2/de
Publication of WO2001031097A2 publication Critical patent/WO2001031097A2/fr
Publication of WO2001031097A3 publication Critical patent/WO2001031097A3/fr

Links

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/28—Drafting machines or arrangements without fallers or like pinned bars in which fibres are controlled by inserting twist during drafting

Definitions

  • the invention relates to animal fibre processing. More particularly, although not exclusively, the invention relates to an improved process and apparatus for modifying
  • a pile fabric such as carpet
  • the difference in shrinkage between the tufts of high and low shrinkage will produce high and low pile or long and short tufts in order to form a visual pattern.
  • the potential shrinkage of fibres for these purposes can be realised by a simple and inexpensive process, such as steaming.
  • thermoplastic fibre while it is hot and relatively plastic, to cool it while it is still held in an extended state and thereby stabilise it. Since the fibre is not completely plastic but is visco-elastic during the hot-stretch process, some elastic strain energy is created within the molecular structure of the fibre, but
  • the volume is increased to a greater degree, thus causing the
  • Lighter weight garments can be any desired increase in the ratio of volume to mass. Lighter weight garments can be any desired increase in the ratio of volume to mass. Lighter weight garments can be any desired increase in the ratio of volume to mass. Lighter weight garments can be any desired increase in the ratio of volume to mass. Lighter weight garments can be any desired increase in the ratio of volume to mass. Lighter weight garments can be any desired increase in the ratio of volume to mass. Lighter weight garments can be
  • the hot-stretching process used to create the high shrinkage potential is carried out
  • substantially twist-free bundle of parallel filaments usually several thousand in number.
  • the continuous filaments are then usually converted to discontinuous staple fibres for further textile processing into yarn.
  • the difficulty of stretching and temporarily setting fibres such as wool, which do not occur in continuous filament form and are not thermoplastic, has until recently prevented the industry from applying the concept of stretch and temporarily setting to wool and animal fibres.
  • Such fibres are discontinuous and a strand comprised of wool fibres will normally attenuate by "drafting" de, fibres will slip in relation to their neighbours at much
  • wool fibres followed by reformation of the bonds in water or steam is widely used, for example in the wool carpet industry for twist stabilisation.
  • Finer wool fibres are generally valued more highly. They can be spun to finer yarns than coarser fibres, which permits lighter weight fabrics to be made, and they feel
  • an after-treatment consisting of repeated aqueous rinsing
  • the invention provides for a method of creating a transient equivalent of
  • thermoplasticity in wool or animal fibres such that they can be extended by substantial amounts without breaking and without requiring to be at high moisture
  • the invention provides a process for stretching sliver in which the
  • sliver is passed in a substantially straight line path through a stretching zone from
  • pulley unit is freely propagated along the sliver uninhibited by contact with pulleys or
  • the invention provides an apparatus for continuously stretching
  • the scope of the invention further includes:
  • the fibre length may be any suitable material.
  • the fibre length may be any suitable material.
  • the lustre of the fibre may be increased.
  • the invention provides for a process for stretching
  • the processes further comprise the step of using a combined false twisting and traction providing haul pulley flyer downstream of the energy applicator and outside of the energy application zone such that the path of the sliver through the
  • the process further comprises the application of microwave or radio frequency, but preferably microwave, energy, to heat the sliver throughout its thickness very rapidly.
  • the present invention also provides for a process for stretching and temporary setting
  • linear microwave or radio frequency heater located in a straight zone in which the sliver is plasticised, stretched and then progressively dried as it passes along the
  • the present invention provides for a single modified haul pulley flyer adapted to cause a sliver to exit the flyer along the axis of rotation, and which is located downstream of a stretching and drying zone such that the sliver path is substantially straight from feed rolls to the flyer.
  • the straight sliver path facilitates
  • the microwave or radio frequency heating can be augmented by the passage of
  • Figure 1 illustrates in graph form the glass transition temperature of wool as a
  • Figure 2 illustrates an apparatus for creating false twist and at the same time providing hauling traction
  • Figure 3 illustrates the rope making industry's Spinning Jenny which embodies a haul pulley device similar to that in Figure 2;
  • Figure 3a is the condenser and nipper
  • Figure 4 illustrates in graph form the relationship between stretched sliver regain, degree of micron reduction and crimp curvature; and • Figure 5 illustrates a general arrangement for a stretch apparatus according to the
  • Prior art methods of heating include creating an atmosphere of steam around the sliver, as described in PCT WO 91 /0283. This requires much longer periods of time to heat the core of sliver which is in a twisted, tensioned and therefore dense
  • the invention provides a process which enables the object of stretching and
  • transient thermoplasticity in wool in the given conditions can be described as follows: Wool like most polymeric solids is subject to a temperature and moisture dependent
  • the glass transition temperature In wool, the glass transition temperature is highly moisture dependent, being relatively low when
  • the wool fibre moisture regain is high and appreciably higher when the fibre regain is relatively low (see Figure 1 ) .
  • the mobile plastic state is a preferred subject of the present invention.
  • the present invention by using microwave or radio frequency heating, permits the same state to be achieved very rapidly and in the absence of an externally applied steam atmosphere
  • the invention permits the wool sliver to pass in a substantially straight path, without
  • twist is redistributed such that the thinner stretched sliver receives more twist than the earlier unstretched section of the sliver.
  • stages of a process according to the present invention can be as follows:
  • live steam ie, saturated steam at approximately atmospheric pressure
  • This also serves to pre-heat the sliver.
  • the sliver may be
  • the sliver is supplied at a controlled rate by a pair of feed (nip) rolls which also serve as a twist block.
  • twist factor a parameter conventionally used in the textile industry to indicate degree of
  • Twist factor is defined as the twist in turns per metre multiplied by the square root of the sliver linear density in grams per 1 000 metres.
  • a twist factor of 2000 to 3000 is likely to be adequate to prevent drafting, with the lower end of the range being appropriate for long fibres and the higher end of the range for shorter fibres. The process is not limited to this range of twist factors, which are
  • the twist inserted by the present invention is not permanent twist, but temporary twist.
  • the sliver is in a twisted condition only during the time when it passes through the stage of the process when it is highly
  • the extension may typically be 40 to 60% for sliver which is to be
  • twist inserted is usually required to be 'real' or permanent twist and this outcome is achieved by rotating the collection package (usually a large bobbin) with respect to the strand axis (see Figure 3) .
  • collection package usually a large bobbin
  • the twist is not required to be 'real' or permanent but preferably to be 'false' or temporary and therefore the collection package downstream of the haul pulley flyer is not rotated with respect to the strand axis.
  • An example of a modified haul pulley flyer is shown in the attached Figure 2. In Figure 2, the
  • apparatus for creating false twist consists of a framework E carrying capstans B and pulleys C.
  • Pulleys C act only as guides to change the sliver direction
  • the framework rotates (driven) about the centre line x-y. In use the sliver moving in the direction of the arrows shown has false twist at A and is substantially twist- free at D.
  • the capstan rollers B are circumferentially grooved as are the guide
  • the capstan rollers B also rotate about their own axes in order to provide traction. This is an adaptation of a well known apparatus in the
  • haul pulley flyer unit is required, which reduces string-up time and this haul pulley
  • flyer unit is located downstream of the stretching zone and drying zone, such
  • the sliver path is substantially straight from feed rolls to the flyer.
  • this straight zone is located a linear microwave or alternatively radio frequency
  • microwave (or radio frequency) heater is substantially the microwave (or radio frequency) heater
  • haul pulley aids the setting effect. Experimentation has shown this to be achieved if the regain is less than 1 5%, but preferably 12 to 14%.
  • the stretched sliver may be collected as twisted (ie, having real
  • FIG. 5 is shown a general arrangement of parts for an example of stretch apparatus.
  • a sliver 7 is supplied from a creel 1 to a pre-steamer 2 to
  • microwave dryer 4 to the haul pulley flyer 5.
  • the sliver is then collected by any suitable collection means such as a can coiler 6.
  • a further application of the process and apparatus disclosed is to supply the stretch- set apparatus with sliver which has been pre-plasticised by a chemical reductive
  • a further increase in degree of set can be achieved by increasing the distance between the microwave or radio frequency heater and the haul pulley flyer and optionally surrounding the sliver with a steam atmosphere.
  • Yet a further increase in degree of set or permanence of stretch may be achieved by an oxidising after- treatment, for example with hydrogen peroxide solution, known to the industry for
  • high sliver regain typically 30 to 60% and not more than 1 5 g/l metabisulphite pre-treatment
  • a sliver of 28.6 micron wool was treated with 1 0% sodium metabisulphite solution at 85°C and then squeezed in nip rolls as it entered the stretch zone of the process
  • the diameter and crimp curvature of the fibre after steam relaxation as measured by the OFDA method were as follows.
  • the fibre length (Almeter method) and the yellowness (Y-Z) are also shown.
  • Example 2 A sliver similar to that described in Example 1 was pre-treated with metabisulphite in the same conditions. It was squeezed and stretched in the same conditions as in Example 1 , with the important exception that less microwave power was supplied,
  • the stretched fibre was finer (although the diameter reduction was only 1 3% as compared to 1 5% in Example 1 ) .
  • the crimp curvature and fibre length were increased and the yellowness was decreased.
  • stretching slivers of wool or animal fibres which may advantageously be used either for the production of temporarily set stretched fibre having high shrinkage potential or for the production of permanently set stretched fibre having reduced diameter, increased length and modified crimp curvature.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

La présente invention concerne un procédé et un dispositif permettant de réaliser un équivalent transitoire de thermoplasticité dans des fibres de laine ou animales, de sorte qu'elles peuvent être étirées dans une large mesure sans qu'elles se rompent et qu'elles fassent appel à une réhumidification élevée ou à un traitement chimique permettant d'augmenter leur plasticité. Un mode de réalisation se rapporte à un procédé servant à étirer le fragment, ledit fragment étant passé dans une zone d'étirage selon une trajectoire en ligne droite dans une large mesure, de rouleaux distributeurs vers une unité de poulie à passage unique. La fausse torsion produite par l'unité de poulie se propage librement le long du fragment sans être gênée par le contact avec des poulies ou d'autres dispositifs.
PCT/NZ2000/000212 1999-10-28 2000-10-27 Procede et dispositif ameliores permettant d'etirer des fragments de fibres animales WO2001031097A2 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AU13135/01A AU769950B2 (en) 1999-10-28 2000-10-27 Improved process and apparatus for stretching slivers of animal fibres
NZ519233A NZ519233A (en) 1999-10-28 2000-10-27 Stretching slivers of wool or animal fibres using microwave heater and single haul pulley flyer unit
EP00975027A EP1240368B1 (fr) 1999-10-28 2000-10-27 Procede et dispositif ameliores permettant d'etirer des fragments de fibres animales
DE60028604T DE60028604T2 (de) 1999-10-28 2000-10-27 Verbessertes verfahren und vorrichtung zum strecken von faserbändern aus tierischen fasern

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NZ33545799 1999-10-28
NZ335457 1999-10-28

Publications (2)

Publication Number Publication Date
WO2001031097A2 true WO2001031097A2 (fr) 2001-05-03
WO2001031097A3 WO2001031097A3 (fr) 2001-10-04

Family

ID=19927241

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NZ2000/000212 WO2001031097A2 (fr) 1999-10-28 2000-10-27 Procede et dispositif ameliores permettant d'etirer des fragments de fibres animales

Country Status (6)

Country Link
EP (1) EP1240368B1 (fr)
CN (1) CN1236117C (fr)
AT (1) ATE329071T1 (fr)
AU (1) AU769950B2 (fr)
DE (1) DE60028604T2 (fr)
WO (1) WO2001031097A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106702563A (zh) * 2017-03-01 2017-05-24 青岛科技大学 一种螺杆调节式羊毛整直装置

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103361923B (zh) * 2013-07-31 2015-10-07 山东南山纺织服饰有限公司 一种未着色羊毛拉伸细化和非永久定形的方法
CN105019093A (zh) * 2015-06-26 2015-11-04 天津纺织工程研究院有限公司 一种羊毛拉伸定型设备及定型工艺
CN107476100B (zh) * 2017-08-21 2023-12-05 长治高测新材料科技有限公司 环形钢丝绳的制造装置
CN109322030A (zh) * 2018-10-18 2019-02-12 内蒙古鹿王羊绒有限公司 Optim纤维拉伸机的拉伸室及其使用方法
CN110004556B (zh) * 2019-04-17 2021-04-30 中国农业科学院兰州畜牧与兽药研究所 一种动物纤维的捻拉设备
CN110760968A (zh) * 2019-12-03 2020-02-07 雄县勤丰纺织制造有限公司 一种合股线牵伸还原装置以及使用其的纱线绕卷成型机

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4961307A (en) * 1989-08-09 1990-10-09 Cook Paul P Textile processing employing a stretching technique
US5477669A (en) * 1989-08-17 1995-12-26 Commonwealth Scientific & Industrial Research Organisation Process for stretching staple fibers and staple fibers produced thereby
US5758483A (en) * 1993-09-17 1998-06-02 Commonwealth Scientific & Industrial Research Organisation Twisting apparatus

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1358499A (en) * 1971-07-19 1974-07-03 Kanebo Ltd Method and apparatus for setting wool sliver
NZ220550A (en) * 1986-06-05 1990-10-26 Nearctic Research Centre Austr Microwave drier cavity: configuration maximises energy in drying zone while minimising energy reflected back to source

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4961307A (en) * 1989-08-09 1990-10-09 Cook Paul P Textile processing employing a stretching technique
US5477669A (en) * 1989-08-17 1995-12-26 Commonwealth Scientific & Industrial Research Organisation Process for stretching staple fibers and staple fibers produced thereby
US5758483A (en) * 1993-09-17 1998-06-02 Commonwealth Scientific & Industrial Research Organisation Twisting apparatus

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP1240368A2 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106702563A (zh) * 2017-03-01 2017-05-24 青岛科技大学 一种螺杆调节式羊毛整直装置

Also Published As

Publication number Publication date
CN1415031A (zh) 2003-04-30
CN1236117C (zh) 2006-01-11
EP1240368A2 (fr) 2002-09-18
ATE329071T1 (de) 2006-06-15
EP1240368B1 (fr) 2006-06-07
DE60028604D1 (de) 2006-07-20
AU1313501A (en) 2001-05-08
AU769950B2 (en) 2004-02-12
WO2001031097A3 (fr) 2001-10-04
DE60028604T2 (de) 2007-06-06
EP1240368A4 (fr) 2002-10-25

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