CN1330175A - Nont-torsion single yarn - Google Patents
Nont-torsion single yarn Download PDFInfo
- Publication number
- CN1330175A CN1330175A CN 00122254 CN00122254A CN1330175A CN 1330175 A CN1330175 A CN 1330175A CN 00122254 CN00122254 CN 00122254 CN 00122254 A CN00122254 A CN 00122254A CN 1330175 A CN1330175 A CN 1330175A
- Authority
- CN
- China
- Prior art keywords
- yarn
- torsion
- twist
- residue
- fabric
- 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 claims abstract description 34
- 238000000034 method Methods 0.000 claims description 21
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 238000012545 processing Methods 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 6
- 238000010923 batch production Methods 0.000 claims description 4
- 239000004744 fabric Substances 0.000 description 25
- 238000009987 spinning Methods 0.000 description 9
- 229920000742 Cotton Polymers 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 8
- 229920000728 polyester Polymers 0.000 description 7
- 230000004048 modification Effects 0.000 description 6
- 238000012986 modification Methods 0.000 description 6
- 238000009826 distribution Methods 0.000 description 5
- 238000007383 open-end spinning Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000010042 air jet spinning Methods 0.000 description 4
- 238000009940 knitting Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000004753 textile Substances 0.000 description 3
- 238000010036 direct spinning Methods 0.000 description 2
- 238000009998 heat setting Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000007378 ring spinning Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 210000002268 wool Anatomy 0.000 description 2
- 241001589086 Bellapiscis medius Species 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000009954 braiding Methods 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 210000004209 hair Anatomy 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000012417 linear regression Methods 0.000 description 1
- 238000003913 materials processing Methods 0.000 description 1
- 238000009992 mercerising Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000000275 quality assurance Methods 0.000 description 1
- 238000012857 repacking Methods 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 229940079827 sodium hydrogen sulfite Drugs 0.000 description 1
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Landscapes
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Abstract
A non-torsion short fibre is made up through twisting in one direction at first step and twisting in opposite direction at another step, and features that the residual torsion of central yarn core is basically balanced by the residual torsion of the fibres surrounding the control yarn core.
Description
The present invention relates to Nont-torsion single yarn.
It is known that short fibre yarn is twisted.It mainly is will make it have structural intergrity and the required characteristic of acquisition when making fabric with this yarn that short fibre yarn is twisted.Twisting has been used decades on the spot, but the single thread that usually causes producing obviously leaves residue torsion.The way that solves is to use two strands of single thread that are intertwined to make fabric, and the residue torsion of these two strands of single thread is settled in the opposite direction.
As more general explanation or background, the residue torsion of twisted yarn or twist liveliness become the outstanding and the most important factor that the spirality to the single jersey of this yarn manufacturing exerts an influence in other factors.If the unstable yarn of the twist is used for knitwear, formed coil can not be symmetrical, because there is indefinite torsional strain in yarn.This twisted yarn will have a kind of untwisting and move back the trend of separating the strain of twisted yarn internal torsion, in the hope of a kind of natural configuration of state of minimum energy.This yarn will be attempted rotation in fabric; Like this, a side of coil will bloat the opposite side of coil then to rest in the fabric from the surface.The distortion of this coil symmetry has caused changes bent, that is, and and the inclination of the rib-loop decorative pattern on coil and the fabric.
Spirality on a kind of knitted fabric changes with the difference of used fiber type.In other words, dissimilar fibers have different modulus (tension, bending and shear) and different shape of cross sections; Therefore, different stress levels will appear in yarn.The increase of torsion has improved the twist instability in the yarn and has therefore promoted the commentaries on classics song of the single jersey that this yarn makes in the yarn.Therefore, different fibers will have influence on the size of upholding the yarn torsion that produces in subsequently yarn and knit materials processing procedure owing to yarn in the difference on the tensile modulus.We can say that the percentage that increases polyester in cotton/polyester blended yarn will increase twist liveliness and therefore increase changes bent distortion in the single jersey of this yarn manufacturing in ring spun yarn and two kinds of yarns of open-end yarn.Because amount of polyester is higher and occur to change Qu Zengjia in single jersey in the cotton/polyester blended yarn of identical code length, be likely because modulus is higher and two kinds of fiber types between shape of cross section variant.
Twisting produces a kind of cross force that fiber is combined by friction in textile yarn.In fact, in different yarn textures, the distribution of internal stress is different.Experimental result shows the friction yarn, and (DREF-II) have the highest yarn residue torsion or entanglement trend, the yarn of producing by RING SPINNING, open-end spinning (revolving cup spins) and Air-Jet Spinning then has less residue torsion.In addition, among its fabric, be maximum by the bent angle of commentaries on classics on the fabric made of friction yarn.
The difference of the residue torsion of these four kinds of yarns reflects the difference of its structure.Ring ingot single thread is considered to be made of the form concentric spirals that has even packing density in yarn cross section usually, and fibre migration then is an accidental quality.Like this, when initial level of twist was arrived in the yarn untwisting, its intensity reduced to zero thereby yarn will collapse.On the contrary, unconventional spinning unit has been produced has the yarn that the inhomogeneous twist distributes, comprising open-end yarn, jet spun yarn and friction yarn.In addition, the packing density in these yarns is not that local fibre matting and looping are its common traits uniformly.The intensity of these yarns does not become zero when untwisting.
Therefore, there are several factors having a strong impact on the residue torsion of yarn, the geometry of shape of cross section, spinning unit and the yarn of fiber type, fiber is wherein arranged.Also have residue distorting stress level in many factor affecting yarns and/or influence the relative free degree in addition in the coil movement of knitting technology weave inside, so that the commentaries on classics song of influence in final fabric.These factors comprise that the setting of knitting technology weave, knitting machine, fabric retraction and the fabric that produces owing to post processing formalize.
In the past, developed various technology and reduced or eliminate residue torsion in the textile yarn.According to a basic principle, these technology can be divided into two main kinds, and the firstth, with the yarn permanent set, second then is with physical form balance residue torsion.
As everyone knows, the permanent set amount that is incorporated in a kind of fiber is many more, and then the spirality that is formed by yarn residue torsion is just more little.Can carry out the yarn setting with diverse ways according to fiber type.Under the thermoplastic fibres situation, be under the stress at yarn or fabric and heat-treat, its temperature is more than the glass transition point but in (as in the false twisting operation) below the fusing point.The heat setting of cotton/polyester blended single thread has reduced residue torsion widely, almost can eliminate the commentaries on classics song of fabric even in the blended yarn that forms with Air-Jet Spinning and open-end spinning.
For the natural fabric such as cotton or hair, it is more complicated that setting is handled, for example, and steam setting, setting and chemical treatment in hot water, for example processing of carrying out with sodium hydrogensulfite under processing of the mercerising under the cotton yarn situation and the wool yarn situation., the residue torsion that can not eliminate single thread is fully handled in the setting of natural fabric, the damage of fiber and the deterioration of yarn property also may occur.
Some torsion balance technology in industrial employing has: (1) has equal single thread plying identical with twisting count in the said single thread but that direction is opposite with two strands; (2) has same twist with two strands but the opposite single thread of direction is fed into same thread-carrier; Or more simply, (3) have same twist by two strands of plaiting method uses but the opposite yarn of direction carries out knitting.
The somebody has advised some methods with direct spinning method production Nont-torsion single yarn.A kind of twin spinning unit that is used for producing the torsion balance yarn has been proposed.Comprise a yarn core of making by gas ejecting system with the yarn of this cover system production, then with revolve cover fiber in the mode identical with the DREF-III yarn with its looping.The yarn core of final yarns and yarn skin component all have the opposite twist/torsion direction.Also proposing the technology of the cotton skin of a kind of production RING SPINNING/polyester core yarn, is to carry out torsion balance by using with the wrap yarn sth. made by twisting to opposite heart yarn or by the polyester components that adds the heat setting yarn simply at this.
Handle compared with setting, balance method has tangible advantage, particularly for natural fabric.The first, the balance yarn is a kind of physical treatment that does not contain chemical substance, has therefore avoided the damage of fiber.The second, balance method can be applicable to comprise the fiber of all kinds of natural fabric., when the ramuscule number of folded yarn is a half of the spinning limit of single thread, if form balanced structure with two strands of single thread, the common practice of two strands of yarns of then present industrial employing is just restricted to minimum fabric weight.If make the torsion balance single thread with the direct spinning technology, some worry economically will appear, because need carry out certain repacking to machine.
Task of the present invention is to overcome or reduce these defectives at least.
According to the present invention, will provide a kind of method of making the torsionless short fibre yarn, referring now to accompanying drawing and in the mode of embodiment method of the present invention is set forth, wherein:
Fig. 1 is the production stage flow chart of this yarn of batch process;
Fig. 2 (a) and 2 (b) are the equipment that batch process is produced this yarn;
Fig. 3 is the twist distribution map in the different yarns; With
Fig. 4 (a) and 4 (b) are the principle key-drawings of the yarn of processing.
With reference to the accompanying drawings, in Fig. 1, implement batch process in two ways.First kind of mode comprises to be handled raw yarn (female yarn), and these raw yarns any from open-end spinning, Air-Jet Spinning and three kinds of systems of DREF-III carries out modification by ring ingot or double-twist twisting machine to it.The gained textured yarn will be accepted wet wrapping test.If the residue twist through testing gained is in acceptance limit, then this yarn satisfies the requirement of Nont-torsion single yarn, and then can be wound up.Otherwise, just must handle to change and pass through test modification up to yarn.The second way is used to produce in batches.By ring ingot or double-twist twisting machine raw yarn is carried out modification, then move back then and enclose and be wound up on the bobbin.
With reference to Fig. 2 (a), the yarn modification is finished by a ring doubling frame, and a feed roller 10 is to work beam 11 feeding yarns.In addition, can finish work of treatment by the double-twist twisting machine shown in Fig. 2 (b).The bobbin that contains raw yarn is placed on one in the spindle 12 that central shaft rotates, and spindle revolution one loop yarn line obtains 2 to be changeed, and yarn is wound onto on the work beam 11.
In Fig. 3, shown is the twist distributions of four kinds of single thread along its yarn radius, and these four kinds of yarns are: DREF-III yarn, jet spun yarn, open-end yarn and ring spun yarn.First three is planted yarn and presents some uneven twist distribution, and explanation is the example of DREF-III yarn among Fig. 4 (a).Ring spun yarn has uniform distribution, and therefore inapplicable this modification is handled.
In Fig. 4 (b), shown torsionless yarn produced according to the invention.Yarn core 13 has been applied in a twist in first step, for example be reduced by a ring ingot or double-twist twisting machine in modifying process.Like this, the outer thread of yarn or core skin 14 just have a residue twist, and it is formed by twisting machine twisting in second step.The relative quantity of twisting and residue torsion in the opposite direction are at yarn core 13 and outward in detail be able to balance basically between 14.
Therefore, utilize the core skin structure of the unconventional yarn that spins, the method for modifying of described yarn can be used for the single thread of multiple spinning or twist system spinning, for example, and open-end spinning, friction spun yarn and air-jet spinning system.This method can be applied to any kinds of fibers and blending.For example, natural fabric or regenerated fiber are as the blending of cotton textiles, pure wool, viscose rayon or these fibers.For example, can produce Nont-torsion single yarn basically with 100% cotton fiber.
Described technology and method are mechanical purely, therefore can eliminate the commentaries on classics song of final single jersey fully, and not by processing any heat or wet or chemistry.To raw yarn and textured yarn with and the performance of final fabric and the assessment result of feature be, all extraordinary on surface property, feel, gas permeability and the thermal conductivity of fabric.The decline of fabric bursting strength and anti-pilling and yarn tensile strength is alleviated to some extent and can not gone wrong in continuous processing or dress.
When ignoring fibre-fibre friction, total yarn torsion can represent with three kinds of component by the filament effect, that is, crooked, component reverses and stretch.In the ring spun yarn from the first step, filamentary effect is addition, because they generally are on same direction., having at single thread under the situation of core skin structure has been not so just, for example under the yarn situation of being spun in the unconventional system in second step.Fiber in core or skin can have different fiber orientations, and therefore, filamentary effect can be offset.Suitable single thread can untwisting to reach the total yarn torsion or the torsion balance state of null value.
Modification is handled can be by providing the mode of predetermined untwisting amount to finish to yarn in second step.On above-mentioned twisting machine, for example on ring doubling frame, double-twist twisting machine or Novelty twisters, raw yarn is twisted on the opposite direction of its initial twist with predetermined amount of twist, in continuous processing technique, there is a mechanical device to be installed in and makes the yarn bobbin rotation on the spinning machine, so just can on a spinning machine, carry out the untwisting operation in a continuous manner.
Be appreciated that needed twisting or spinning amount must make and keep zero torsion or zero basically torsion after second step in the yarn yarn in second step in order to produce the torsionless yarn.Because this practice is varied to another kind with yarn from one type, therefore, in actual applications, the twist against twist amount in second step is preferably determined with experimental technique.
For example, can carry out untwisting to yarn samples, then measure the twist liveliness of the yarn of handling by the twist test of a twisting/untwisting yarn.Can each yarn samples be supposed 40 kinds of samples with different untwisting levels are carried out the unstable test of the twist.Along with the increase of the reverse twist of adding, the twist liveliness of yarn descends gradually and be reduced to zero when reaching balanced structure.Be that zero twist liveliness is determined with linear regression method.
Even so, if will add the reverse twisting count of single thread, just may need the adjustment of certain fibre-fibre friction, fiber, yarn and fabric parameter in the untwisting amount conduct of zero-twist point of instability.The problem of considering comprises fiber type, yarn and fabric parameter and resting period.In addition, also should select the mechanical device in the open-end spinning frame, for example rotor, resistance twist head, twist arrester, so that improve the performance of modified stream yarn by the radial distribution that increases fibre-coated and improve fiber, so that the residual intensity of single thread reaches the requirement that continues processing.The untwisting level of expection should be to make the fabric in the jersey change bent angle less than 3 degree after washing cycle at three 5A.
In the yarn treatment production environment, in case assessment experimental data, set the operating parameter of twisting machine, then can begin to produce., if desired, can finely tune the purpose of producing the torsionless yarn to reach to twisting machine then.If desired, this fine setting can detect and realizes by often carry out quality assurance in any large-scale production process.Importantly, in case determine or assessment initial adjustment, just can on the basis of experimental data, easily determine and can obtain the desired fine setting angle and direction of required torsionless yarn.
Claims (5)
1. method of producing torsionless staple fibre single thread, it comprises a first step of producing short fibre yarn, this short fibre yarn has the uneven radially twist and distributes on its cross section, with one apply mechanical force yarn carried out second step of derotation to untwisting, this step is to carry out with such controlled way, and promptly the residue of all in the central yarn core of yarn torsion carries out balance by the residue torsion in the fiber of yarn core basically.
2. according to the process of claim 1 wherein that said method is a kind of batch process of carrying out in two independent step.
According to the process of claim 1 wherein said method be one have two the order alignment step continuous processing procedure in carry out, yarn will be by tactic yarn production and twisting equipment.
4. according to the process of claim 1 wherein that said second step finished by a ring doubling frame.
5. according to the process of claim 1 wherein that said second step finished by a double-twist twisting machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00122254 CN1330175A (en) | 2000-06-17 | 2000-06-17 | Nont-torsion single yarn |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00122254 CN1330175A (en) | 2000-06-17 | 2000-06-17 | Nont-torsion single yarn |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1330175A true CN1330175A (en) | 2002-01-09 |
Family
ID=4589163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00122254 Pending CN1330175A (en) | 2000-06-17 | 2000-06-17 | Nont-torsion single yarn |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1330175A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005028722A1 (en) * | 2003-09-15 | 2005-03-31 | E.I. Dupont De Nemours And Company | Composite twist core-spun yarn and method and device for its production |
| CN1804170B (en) * | 2005-01-14 | 2011-04-06 | 香港理工大学 | Method and apparatus for machining single ring spun yarn |
-
2000
- 2000-06-17 CN CN 00122254 patent/CN1330175A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005028722A1 (en) * | 2003-09-15 | 2005-03-31 | E.I. Dupont De Nemours And Company | Composite twist core-spun yarn and method and device for its production |
| US7155891B2 (en) | 2003-09-15 | 2007-01-02 | E. I. Du Pont De Nemours And Company | Composite twist core-spun yarn and method and device for its production |
| US7493747B2 (en) | 2003-09-15 | 2009-02-24 | E. I. Du Pont De Nemours And Company | Composite twist core-spun yarn and method and device for its production |
| CN1804170B (en) * | 2005-01-14 | 2011-04-06 | 香港理工大学 | Method and apparatus for machining single ring spun yarn |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3367101A (en) | Crimped roving or sliver | |
| CA1036437A (en) | Product and process for making a wrapped yarn | |
| CN1152641A (en) | Composite textured yarn, process for its production, woven or knitted fabrics made thereof, and apparatus for producing it | |
| CN1143986A (en) | Core wrap yarn | |
| CN1082577C (en) | False twisted yarn | |
| CN102027165B (en) | Methods of forming yarn and apparatus for twisting or cabling yarn | |
| JPS6314099B2 (en) | ||
| Tyagi | Yarn structure and properties from different spinning techniques | |
| US4559772A (en) | False twist texturized yarn, and a process for its preparation | |
| US3255580A (en) | Method of blending or combining fibers and product | |
| CN103849957A (en) | Method and device for processing less-hairiness low-torque ring yarn | |
| CN1330175A (en) | Nont-torsion single yarn | |
| CN1091812C (en) | Heterochromatic wool-terylene blended yarn and its making method | |
| JP4528315B2 (en) | Composite spun yarn and fabric using the same | |
| JP2004183191A (en) | Stretch spun yarn, woven or knitted fabric and method for producing the same | |
| Caban | A new spinning process for worsted yarns | |
| Heuberger et al. | The technology of fasciated yarns | |
| CN1029018C (en) | Bulked silk and fabric and manufacturing method thereof | |
| JP7119391B2 (en) | Bundled spun yarn, method for producing the same, and woven or knitted fabric containing the same | |
| Rengasamy | Fundamental principles of ring spinning of yarns | |
| WO2021066779A2 (en) | A soft-touch, swellable and bulk yarn in an air-jet spinning system and a production method thereof | |
| Dhamija et al. | Impact of plying on the physical properties of vortex and other spun yarns | |
| US2356887A (en) | Process for the manufacture of strongly curled, woollike twisted yarns of endless threads | |
| Oboda et al. | Evaluating the Tensile Strength and Elongation Properties of Produced Yarns Using Direct Twist Technique | |
| CN115852546A (en) | Manufacturing process of cashmere core-spun yarn |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |