EP1036866A2 - Sewing thread and method for the production of a sewing thread - Google Patents
Sewing thread and method for the production of a sewing thread Download PDFInfo
- Publication number
- EP1036866A2 EP1036866A2 EP00103561A EP00103561A EP1036866A2 EP 1036866 A2 EP1036866 A2 EP 1036866A2 EP 00103561 A EP00103561 A EP 00103561A EP 00103561 A EP00103561 A EP 00103561A EP 1036866 A2 EP1036866 A2 EP 1036866A2
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- EP
- European Patent Office
- Prior art keywords
- sewing thread
- roving
- yarn
- dtex
- fiber yarn
- 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.)
- Granted
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Classifications
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/44—Yarns or threads characterised by the purpose for which they are designed
- D02G3/46—Sewing-cottons or the like
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
- D02G3/38—Threads in which fibres, filaments, or yarns are wound with other yarns or filaments, e.g. wrap yarns, i.e. strands of filaments or staple fibres are wrapped by a helically wound binder yarn
Definitions
- the present invention relates to a sewing thread with the features the preamble of claim 1 and a method to produce such a sewing thread with Features of the preamble of claim 19.
- Sewing threads are known in different constructions, be it as sewing thread, as air-entangled yarns or as core yarns, each of the constructions listed above being theirs has individual advantages or weaknesses.
- Sewing threads designed as core threads have at least two rovings, these at least two, as core yarns trained rovings by twisting to manufacture Sewing thread are processed.
- Each of these rovings has the construction of a core yarn, such that each roving at least one core from a first multifilament yarn component comprises, this soul then with a second Fiber yarn component is wound.
- a roving a core-shell structure wherein the core through the inner multifilament soul that follows is also referred to as the first yarn component, and the Coat through a fiber yarn that spins the soul and that hereinafter also as the second yarn component or as the second Fiber yarn component is designated, is formed.
- the first multifilament yarn component to cover this first multifilament yarn component which is a major part of the strength of the finished Sewing thread provides, from unwanted damage
- the experts held it up today necessary for such a covering with fiber yarn must be so dense that the one made from two rovings Sewing thread seen at least in the cross section of the sewing thread about 45 individual fibers per roving, as a rule, however between 50 and 88 individual fibers per roving.
- the present invention is based on the object To provide sewing thread of the specified type that the Has construction of a core yarn and the cheaper than can be produced so far.
- the sewing thread according to the invention also exists as before known sewing thread described from at least two rovings, which twists together to form the sewing thread are.
- Each roving has the construction of a core yarn on, this core yarn at least one that Soul-forming first multifilament yarn component and a die Soul-spinning second fiber yarn component comprises.
- the finished sewing thread seen in the inventive Sewing thread at least the fiber thread wound a roving up to 41 individual fibers, preferably less than 41 individual fibers, so that in comparison to the prior art described above, the invention Sewing thread a much smaller number of fiber threads in the fiber yarn covering forming the sheath of the rovings owns.
- the invention differs Sewing thread from conventional sewing thread in that that the sewing thread according to the invention has at least one roving, in which the fiber yarn spinning is decidedly less Has individual fibers than in the prior art Case is.
- the improved sewing behavior of the sewing thread according to the invention which is up to 15% higher Sewing speeds or up to 20% longer seams with multidirectional Sewing and a higher number of with the Sewing thread according to the invention created buttonholes without thread break expresses, it is attributed to that in the invention Sewing thread provided fiber yarn covering of the roving with a maximum of 41 individual fibers or preferably less (seen across the cross section of the finished sewing thread) on the one hand the multifilament soul of each roving is still sufficient from mechanical and / or thermal damage protects and on the other hand due to the reduced number of individual fibers increased structuring in the wrapping has, so that even more air through such a reference the individual fiber count entrains reduced rewound, which improves cooling by the industrial Sewing heated thread guide organs or the needle brought about becomes.
- the sewing thread according to the invention has due to the reduction of the individual fibers in the fiber yarn spinning of the at least one roving compared to a conventional one Sewing thread containing at least 45 individual fibers in the fiber thread has a considerably reduced thickness on, so that even finer with the sewing thread according to the invention Seams can be created, which was previously conventional Coregarn remained locked.
- the sewing thread according to the invention in Compared to a conventional core yarn cheaper to produce.
- This advantage is in the invention Sewing thread is further emphasized by the fact that during spinning a small amount of fiber yarn in the roving must be processed so that the manufacturing speeds accordingly of the sewing thread according to the invention in Comparison to the manufacturing process of conventional sewing thread accordingly, preferably by 5% to about 15% can.
- a particularly suitable embodiment of the invention Sewing thread provides that the fiber yarn is spun maximum of all rovings seen in the cross section of the sewing thread 41, but preferably less than 41, individual fibers.
- Such a thing Sewing thread is then identical in comparison to one otherwise constructed conventional sewing thread the previously listed Advantages in a special measure and also has one extremely small thickness, without this the sewing Properties will deteriorate in any way.
- this embodiment of the sewing thread according to the invention at least one such roving includes, in which the fiber yarn spinning in cross section of the sewing thread seen a number of individual fibers between 20 individual fibers and has 38 individual fibers.
- this embodiment of the sewing thread according to the invention exclusively such rovings created in which the fiber yarn spinning of all rovings seen in cross section of the sewing thread between Have 20 individual fibers and 38 individual fibers, so owns such an embodiment of the sewing thread according to the invention even more improved sewing properties and can also even while reducing the use of materials and more Create increase in manufacturing speed.
- the individual fibers the mean of the fiber yarn spinning of each roving Stack length between 25 mm and 70 mm, preferably between 33 mm and 43 mm.
- Sewing thread addressed cover of the multifilament It is the soul of every roving when it comes to the inventive one Sewing thread of the total denier of the fibers used for the thread spinning of a roving used between 25 dtex and 200 dtex varies.
- the sewing thread according to the invention has such rovings that have a total titre between 70 dtex and 400 dtex own, these rovings designed as core yarns then in addition to the multifilament soul as a coat trained fiber yarn spinning with a maximum number of individual fibers of 41 individual fibers and in particular less than Has 41 individual fibers.
- Sewing thread A particularly good correlation between the thickness of the invention Sewing thread and the desired properties reached when the sewing thread according to the invention from two to four rovings of those described above or below still to be described type, which under formation of the Sewing threads are then twisted together.
- Such a thing Sewing thread then has in particular an overall titer as a finished one Sewing thread between 140 dtex (2 x 70 dtex) at a minimum and especially a maximum titer of 1,600 dtex (4 x 400 dtex) and is almost for all sewing operations that occur particularly suitable.
- a particularly high-strength embodiment of the invention Sewing thread is achieved when the soul multifile first yarn component of each roving or the Soul of at least one roving made of polyester, in particular made of high-strength polyester.
- a polyethylene terephthalate that also under the name of the high-strength standard in the trade Technical polyester fibers are offered, in particular the intrinsic viscosity between 0.5 dl / g and 0.75 dl / g, preferably between 0.55 dl / g and 0.63 dl / g, varies.
- this intrinsic viscosity is appropriate Polymer solutions in dichloroacetic acid determined at 25 ° C.
- the sewing thread according to the invention preferably has such rovings on which the multifilament first yarn component, the forms the soul of every roving, a filament number in particular between 16 and 300, preferably a single filament number between 24 and 96.
- Such embodiments have a particularly advantageous sewing behavior of the sewing thread according to the invention, in which the second yarn component, which is the spinning of each Roving forms, a fiber yarn made of polyester fibers and / or from cellulosic fibers, in particular from cotton fibers, is.
- a polyester fiber is used as the fiber yarn used for spinning, so this offers opposite the embodiments of the sewing thread according to the invention, the one Have encapsulation of cellulosic fibers, plus the additional
- the advantage that such a sewing thread is then exclusive consists of polyester and therefore in a one-step process using one class of dye, namely of disperse dyes, can be dyed.
- polyester stands for such in the present text Fibers or filaments made exclusively or largely consist of polyethylene terephthalate.
- a particularly good and less hairy cover is used ensured such embodiments of the sewing thread according to the invention, for those for the covering of each roving such fibers are selected, their single fiber titer between 0.6 dtex and 4 dtex, in particular between 0.8 dtex and 2 dtex, varies.
- Fibers, fiber yarns or staple fibers in the sense of the present Registration should all match such thread-like Denote structures that have a limited length, in particular have a length between 25 mm and 70 mm.
- each roving in the invention Sewing thread is a mass ratio of the first thread component to second fiber yarn component, which is the spinning of the first, yarn component serving as soul, from 50:50 to 75:25 and preferably from 58:42 to 68:32.
- a particularly suitable and easily colored embodiment of the sewing thread according to the invention provides that each roving is a first material that is identical Yarn component, i.e. a soul material, which with wound around a fiber yarn winding identical in material is.
- the present invention further relates to a method for producing the previously described embodiments of the sewing thread according to the invention.
- Sewing threads are initially at least two Rovings created, being used to create each roving a fuse made from fiber yarn together with the as Soul-serving multifilament yarn component of a spinning device is fed and spun there. After that the so created at least two rovings that are is core yarns, twisted together, whereby the inventive Sewing thread is formed.
- the sliver of the fiber yarn immediately before being fed to the Spinning device compressed so far that in the finished sewing thread the fiber yarn spinning of at least one roving over the Cross-section of the sewing thread seen a maximum of 41 individual fibers, preferably less than 41 individual fibers and in particular between 20 individual fibers and 38 individual fibers.
- the method according to the invention has the same Advantages that already exist for the sewing thread according to the invention are described so that to avoid repetition this is referred to.
- the inventive method is particularly is economically applicable while saving material, that it is faster compared to the conventional method is executable and that the created according to the invention Sewing thread excellent and universal sewing properties has, as described in detail above is.
- the inventive The process produced a sliver of the fiber yarn immediately before the feed to the spinning device is compressed so far that they are 10 times to 25 times the volume of the spun Rovings, especially 15 times to 20 times the volume of the spun roving. Due to the fact that that fed to the spinning device together with the core material Fibers of the fiber yarn usually only a limited one Thickness, i.e. in particular a thickness of about 1 to 5 layers of the fiber yarn, the volume of the fiber yarn sliver can are approximately equated with the width that the Fibrous thread fastener takes, so that the previously reproduced statement with regard to the compression approximately the following Statement corresponds. This means that in the invention Process the width occupied by the fuse 10 times to 25 times, especially 15 times up to 20 times the thickness of the spun roving becomes.
- Coefficient of twist ⁇ 'for the production of the roving is used between 80 and 130, of course the direction of rotation selected for twisting the thread to the direction of rotation of the roving.
- Nm means the yarn count (titer) in number metric.
- the first step was after conventional method spun a roving, where as The starting material for this roving is a multifilament core with a titer of 139 dtex with a fiber yarn with a Total titre of 65 dtex and a pre-rotation coefficient ⁇ 'of 110 was twisted in the S direction.
- the starting material for this roving is a multifilament core with a titer of 139 dtex with a fiber yarn with a Total titre of 65 dtex and a pre-rotation coefficient ⁇ 'of 110 was twisted in the S direction.
- a mass ratio of filament material (multifile core) of 68.1% and selected a fiber yarn proportion (fiber yarn spinning) of 31.9%
- the roving thus created then has a titer of effectively had 204 dtex.
- This roving was linear Strength of 1,040 cN or a specific strength of 50.98 cN / tex, the loop strength being 676 cN.
- the fibers used in the fiber yarn wrap had one Individual titers of 1.3 dtex and had a stack length of 38 mm.
- Cross sections were created from this standard sewing thread so the number of fibers of the fiber yarn winding of each roving to determine. For this purpose, five were over a length of 2 m Cross sections made. The number then became microscopic of the individual fibers in the fiber yarn spinning of each roving counted. After unwinding 50 m of the standard sewing thread this measurement was then repeated four times that a total of 25 cross sections were evaluated microscopically.
- the roving thus produced had an effective titer of 188 dtex and a mass distribution from filament to fiber content from 73.9 to 26.1.
- the linear strength of the roving thus produced was 1,060 cN, the specific strength was 56.38 cN / tex.
- the loop strength of the roving was 690 cN.
- the roving had an S twist.
- sewing thread E Two of these rovings were made with the formation of the sewing thread, which is hereinafter referred to as sewing thread E, with each other twisted, with the twist in the Z direction below the previous one specified rotation coefficient ⁇ was carried out.
- the sewing thread E is the number of fibers in the fiber covering of each roving averaged 37.69.
- the finished Sewing thread had a total titer of 407 dtex.
Abstract
Description
Die vorliegende Erfindung betrifft ein Nähgarn mit den Merkmalen des Oberbegriffs des Patentanspruchs 1 sowie ein Verfahren zur Herstellung eines derartigen Nähgarnes mit den Merkmalen des Oberbegriffs des Patentanspruchs 19.The present invention relates to a sewing thread with the features the preamble of claim 1 and a method to produce such a sewing thread with Features of the preamble of claim 19.
Nähgarne sind in unterschiedlichen Konstruktionen bekannt, sei es als Nähzwirn, als luftverwirbelte Garne oder als Coregarne, wobei jede der zuvor aufgeführten Konstruktionen ihre individuellen Vorteile bzw. Schwächen hat.Sewing threads are known in different constructions, be it as sewing thread, as air-entangled yarns or as core yarns, each of the constructions listed above being theirs has individual advantages or weaknesses.
Nähgarne, die als Coregarne ausgestaltet sind, weisen mindestens zwei Vorgarne auf, wobei diese mindestens zwei, als Coregarne ausgebildeten Vorgarnen durch Verzwirnen zum fertigen Nähgarn verarbeitet werden. Jedes dieser Vorgarne besitzt dabei die Konstruktion eines Coregarnes, derart, daß jedes Vorgarn mindestens eine Seele aus einer ersten multifilen Garnkomponente umfaßt, wobei diese Seele dann mit einer zweiten Fasergarnkomponente umsponnen ist. Mit anderen Worten besitzt somit ein derartiges Vorgarn eine Kern-Mantel-Struktur, wobei der Kern durch die innenliegende multifile Seele, die nachfolgend auch als erste Garnkomponente bezeichnet ist, und der Mantel durch ein Fasergarn, das die Seele umspinnt und das nachstehend auch als zweite Garnkomponente bzw. als zweite Fasergarnkomponente bezeichnet ist, ausgebildet wird.Sewing threads designed as core threads have at least two rovings, these at least two, as core yarns trained rovings by twisting to manufacture Sewing thread are processed. Each of these rovings has the construction of a core yarn, such that each roving at least one core from a first multifilament yarn component comprises, this soul then with a second Fiber yarn component is wound. In other words thus such a roving a core-shell structure, wherein the core through the inner multifilament soul that follows is also referred to as the first yarn component, and the Coat through a fiber yarn that spins the soul and that hereinafter also as the second yarn component or as the second Fiber yarn component is designated, is formed.
Da die zweite Fasergarnkomponente oder die Mantelkomponente bei derartigen bekannten Coregarnen die erste multifile Garnkomponente abdecken soll, um so diese erste multifile Garnkomponente, die einen Hauptteil der Festigkeit des fertigen Nähgarnes zur Verfügung stellt, vor einer unerwünschten Beschädigung beim Nähen zu schützen, hielt die Fachwelt es bis heute für erforderlich, daß eine derartige Umspinnung mit Fasergarn so dicht sein muß, daß das aus zwei Vorgarnen hergestellte Nähgarn im Querschnitt des Nähgarnes gesehen mindestens etwa 45 Einzelfasern pro Vorgarn, in der Regel jedoch zwischen 50 und 88 Einzelfasern pro Vorgarn, aufzuweisen hat. Dies führt jedoch dazu, daß derartige Coregarne aufgrund des relativ hohen Einsatzes der Fasergarnmenge nur relativ kostenaufwendig herstellbar sind.Because the second fiber yarn component or the sheath component in such known core yarns, the first multifilament yarn component to cover this first multifilament yarn component, which is a major part of the strength of the finished Sewing thread provides, from unwanted damage To protect when sewing, the experts held it up today necessary for such a covering with fiber yarn must be so dense that the one made from two rovings Sewing thread seen at least in the cross section of the sewing thread about 45 individual fibers per roving, as a rule, however between 50 and 88 individual fibers per roving. However, this leads to the fact that such core yarns due to the relatively high use of the amount of fiber yarn only relatively are expensive to manufacture.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein Nähgarn der angegebenen Art zur Verfügung zu stellen, das die Konstruktion eines Coregarnes aufweist und das preisgünstiger als bisher herstellbar ist. The present invention is based on the object To provide sewing thread of the specified type that the Has construction of a core yarn and the cheaper than can be produced so far.
Diese Aufgabe wird erfindungsgemäß durch ein Nähgarn mit den kennzeichnenden Merkmalen des Patentanspruchs 1 gelöst.This object is achieved by a sewing thread with the characterizing features of claim 1 solved.
Das erfindungsgemäße Nähgarn besteht ebenfalls wie das zuvor beschriebene bekannte Nähgarn aus mindestens zwei Vorgarnen, die unter Ausbildung des Nähgarnes miteinander verzwirnt sind. Jedes Vorgarn weist hierbei die Konstruktion eines Coregarnes auf, wobei dieses Coregarn mindestens eine, die Seele ausbildende erste multifile Garnkomponente und eine die Seele umspinnende zweite Fasergarnkomponente umfaßt. Im Querschnitt des fertigen Nähgarnes gesehen weist bei dem erfindungsgemäßen Nähgarn die Fasergarnumspinnung von mindestens einem Vorgarn maximal 41 Einzelfasern, vorzugsweise weniger als 41 Einzelfasern, auf, so daß dementsprechend im Vergleich zum zuvor beschriebenen Stand der Technik das erfindungsgemäße Nähgarn eine wesentlich geringere Anzahl an Fasergarnen in der den Mantel der Vorgarne bildenden Fasergarnumspinnung besitzt. Mit anderen Worten unterscheidet sich somit das erfindungsgemäße Nähgarn vom herkömmlichen Nähgarn dahingehend, daß das erfindungsgemäße Nähgarn wenigstens ein Vorgarn aufweist, bei der die Fasergarnumspinnung entschieden weniger Einzelfasern aufweist, als dies beim Stand der Technik der Fall ist.The sewing thread according to the invention also exists as before known sewing thread described from at least two rovings, which twists together to form the sewing thread are. Each roving has the construction of a core yarn on, this core yarn at least one that Soul-forming first multifilament yarn component and a die Soul-spinning second fiber yarn component comprises. In cross section the finished sewing thread seen in the inventive Sewing thread at least the fiber thread wound a roving up to 41 individual fibers, preferably less than 41 individual fibers, so that in comparison to the prior art described above, the invention Sewing thread a much smaller number of fiber threads in the fiber yarn covering forming the sheath of the rovings owns. In other words, the invention differs Sewing thread from conventional sewing thread in that that the sewing thread according to the invention has at least one roving, in which the fiber yarn spinning is decidedly less Has individual fibers than in the prior art Case is.
Überraschend konnte festgestellt werden, daß das erfindungsgemäße Nähgarn trotz der verringerten Anzahl von Einzelfasern in der Fasergarnumspinnung des Vorgarnes bzw. der Vorgarne noch verbesserte Näheigenschaften im Vergleich zu einem ansonsten identischen herkömmlichen Nähgarn aufweist. Dies ist um so erstaunlicher, da die Fachwelt die zuvor beim Stand der Technik erwähnte minimale Einzelfaseranzahl von wenigstens 45 Einzelfasern pro Vorgarn als untersten Wert angenommen hat, um hier eine hinreichende Abdeckung und einen hinreichenden Schutz der den Kern des Vorgarnes bildenden multifilen Garnkomponente zu gewährleisten. Das verbesserte Nähverhalten des erfindungsgemäßen Nähgarnes, das sich in bis zu 15 % höheren Nähgeschwindigkeiten oder bis 20 % längeren Nähten bei multidirektionalem Nähen und einer höheren Anzahl von mit dem erfindungsgemäßen Nähgarn erstellten Knopflöchern ohne Fadenriß ausdrückt, wird darauf zurückgeführt, daß die beim erfindungsgemäßen Nähgarn vorgesehene Fasergarnumspinnung des Vorgarnes mit maximal 41 Einzelfasern oder vorzugsweise weniger (über den Querschnitt des fertigen Nähgarnes gesehen) einerseits die multifile Seele eines jeden Vorgarnes noch hinreichend vor einer mechanischen und/oder thermischen Beschädigung schützt und andererseits aufgrund der verringerten Einzelfaserzahl in der Umspinnung eine erhöhte Strukturierung aufweist, so daß noch mehr Luft durch eine derartig bezüglich der Einzelfaserzahl reduzierte Umspinnung mitgerissen wird, wodurch eine verbesserte Kühlung der sich durch das industrielle Nähen erhitzenden Fadenleitorgane oder der Nadel herbeigeführt wird. Auch wird durch eine Reduzierung der Einzelfasern in der Fasergarnumspinnung die Haarigkeit verringert und desweiteren die Gefahr minimiert, daß abstehende Enden von Einzelfasern in der Nadel bzw. an den Fadenleitorganen verhaken und somit einen Fadenbruch beim Nähen herbeiführen. Ferner weist das erfindungsgemäße Nähgarn aufgrund der Verringerung der Einzelfasern in der Fasergarnumspinnung des mindestens einen Vorgarnes im Vergleich zu einem herkömmlichen Nähgarn, das mindestens 45 Einzelfasern in der Fasergarnumspinnung besitzt, eine doch erheblich verringerte Dicke auf, so daß mit dem erfindungsgemäßen Nähgarn auch feinere Nähte erstellt werden können, was bisher dem konventionellen Coregarn verschlossen blieb. Bedingt dadurch, daß das erfindungsgemäße Nähgarn wegen der reduzierten Einzelfaserzahl in der Fasergarnumspinnung auch einen reduzierten Materialeinsatz erfordert, läßt sich das erfindungsgemäße Nähgarn im Vergleich zu einem herkömmlichen Coregarn entsprechend preiswerter produzieren. Dieser Vorteil wird bei dem erfindungsgemäßen Nähgarn noch dadurch weiter betont, daß während der Umspinnung des Vorgarnes eine geringe Materialmenge an Fasergarn verarbeitet werden muß, so daß dementsprechend die Herstellgeschwindigkeiten des erfindungsgemäßen Nähgarnes im Vergleich zum Herstellungsverfahren von herkömmlichem Nähgarn entsprechend, vorzugsweise um 5 % bis etwa 15 %, erhöht werden können.It was surprisingly found that the invention Sewing thread despite the reduced number of single fibers in the fiber yarn covering of the roving or roving even better sewing properties compared to an otherwise has identical conventional sewing thread. This is all the more astonishing, since the experts at the state of the art Technique mentioned minimum single fiber count of at least 45 Individual fibers per roving has assumed the lowest value, in order to have adequate coverage and sufficient Protection of the multifilament yarn component that forms the core of the roving to ensure. The improved sewing behavior of the sewing thread according to the invention, which is up to 15% higher Sewing speeds or up to 20% longer seams with multidirectional Sewing and a higher number of with the Sewing thread according to the invention created buttonholes without thread break expresses, it is attributed to that in the invention Sewing thread provided fiber yarn covering of the roving with a maximum of 41 individual fibers or preferably less (seen across the cross section of the finished sewing thread) on the one hand the multifilament soul of each roving is still sufficient from mechanical and / or thermal damage protects and on the other hand due to the reduced number of individual fibers increased structuring in the wrapping has, so that even more air through such a reference the individual fiber count entrains reduced rewound, which improves cooling by the industrial Sewing heated thread guide organs or the needle brought about becomes. Also by reducing the individual fibers reduces hairiness in the fiber yarn and further minimizes the risk of protruding ends of single fibers in the needle or on the thread guide organs hook and thus cause a thread break when sewing. Furthermore, the sewing thread according to the invention has due to the reduction of the individual fibers in the fiber yarn spinning of the at least one roving compared to a conventional one Sewing thread containing at least 45 individual fibers in the fiber thread has a considerably reduced thickness on, so that even finer with the sewing thread according to the invention Seams can be created, which was previously conventional Coregarn remained locked. Due to the fact that the invention Sewing thread because of the reduced number of single fibers in the fiber yarn spinning also requires less material required, the sewing thread according to the invention in Compared to a conventional core yarn cheaper to produce. This advantage is in the invention Sewing thread is further emphasized by the fact that during spinning a small amount of fiber yarn in the roving must be processed so that the manufacturing speeds accordingly of the sewing thread according to the invention in Comparison to the manufacturing process of conventional sewing thread accordingly, preferably by 5% to about 15% can.
Um bei dem erfindungsgemäßen Nähgarn die Anzahl der Einzelfasern, die in der Fasergarnumspinnung des mindestens einen Vorgarnes vorgesehen sind, reproduzierbar und eindeutig zu messen, werden über eine Länge von 2 m des fertigen Nähgarnes fünf Querschnitte angefertigt, so daß anhand dieser Querschnitte dann die Fasergarnumspinnung bezüglich ihrer Einzelfaseranzahl mikroskopisch ausgezählt werden kann. Dieser Vorgang wird dann jeweils nach Abspulen von 50 m viermal wiederholt, so daß dann 25 Querschnitte entsprechend mikroskopisch ausgewertet sind, aus denen dementsprechend ein Mittelwert für die Einzelfaseranzahl der Fasergarnumspinnung gewonnen wird.In order to determine the number of individual fibers in the sewing thread according to the invention, that in the fiber yarn spinning of the at least one Rovings are intended to be reproducible and unique measure over a length of 2 m of the finished sewing thread made five cross sections, so that based on these cross sections then the fiber yarn spinning with regard to its number of individual fibers can be counted microscopically. This process is then repeated four times after unwinding 50 m, so that then 25 cross sections correspondingly microscopic are evaluated, from which, accordingly, an average won for the individual number of fibers of the spun yarn becomes.
Eine besonders geeignete Ausführungsform des erfindungsgemäßen Nähgarnes sieht vor, daß hierbei die Fasergarnumspinnung aller Vorgarne im Querschnitt des Nähgarnes gesehen maximal 41, vorzugsweise jedoch weniger als 41, Einzelfasern aufweisen. Mit anderen Worten wird somit bei dieser bevorzugten Ausführungsform des erfindungsgemäßen Nähgarnes das Nähgarn durch Verzwirnen von solchen Vorgarnen ausgebildet, bei denen die Einzelfaserzahl der Umspinnung auf maximal 41 Einzelfasern und vorzugsweise weniger begrenzt ist. Ein derartiges Nähgarn besitzt dann im Vergleich zu einem ansonsten identisch konstruierten herkömmlichen Nähgarn die zuvor aufgeführten Vorteile im besonderen Maße und weist zudem noch eine extrem geringe Dicke auf, ohne daß hierdurch die nähtechnischen Eigenschaften in irgendeiner Weise verschlechtert werden.A particularly suitable embodiment of the invention Sewing thread provides that the fiber yarn is spun maximum of all rovings seen in the cross section of the sewing thread 41, but preferably less than 41, individual fibers. In other words, this is preferred Embodiment of the sewing thread according to the invention the sewing thread formed by twisting such rovings where the number of individual fibers in the spinning to a maximum of 41 individual fibers and is preferably less limited. Such a thing Sewing thread is then identical in comparison to one otherwise constructed conventional sewing thread the previously listed Advantages in a special measure and also has one extremely small thickness, without this the sewing Properties will deteriorate in any way.
Überraschend konnte festgestellt werden, daß eine besonders geeignete und für viele Nähoperationen hervorragend verwendbare Ausgestaltung des erfindungsgemäßen Nähgarnes dadurch zur Verfügung gestellt werden kann, daß diese Ausführungsform des erfindungsgemäßen Nähgarnes mindestens ein solches Vorgarn umfaßt, bei dem die Fasergarnumspinnung im Querschnitt des Nähgarnes gesehen eine Einzelfaseranzahl zwischen 20 Einzelfasern und 38 Einzelfasern aufweist. Wird diese Ausführungsform des erfindungsgemäßen Nähgarnes ausschließlich aus solchen Vorgarnen erstellt, bei denen die Fasergarnumspinnung aller Vorgarne im Querschnitt des Nähgarnes gesehen zwischen 20 Einzelfasern und 38 Einzelfasern aufweisen, so besitzt eine derartige Ausgestaltung des erfindungsgemäßen Nähgarnes noch weiter verbesserte Näheigenschaften und läßt sich zudem noch unter Verringerung des Materialeinsatzes und weiterer Erhöhung der Herstellungsgeschwindigkeit erstellen.It was surprisingly found that one particular suitable and excellent for many sewing operations Design of the sewing thread according to the invention can be provided that this embodiment of the sewing thread according to the invention at least one such roving includes, in which the fiber yarn spinning in cross section of the sewing thread seen a number of individual fibers between 20 individual fibers and has 38 individual fibers. Will this embodiment of the sewing thread according to the invention exclusively such rovings created in which the fiber yarn spinning of all rovings seen in cross section of the sewing thread between Have 20 individual fibers and 38 individual fibers, so owns such an embodiment of the sewing thread according to the invention even more improved sewing properties and can also even while reducing the use of materials and more Create increase in manufacturing speed.
Um die Haarigkeit bei dem erfindungsgemäßen Nähgarn weiter zu optimieren und darüber hinaus noch die Nähleistung weiter zu steigern, sieht eine besonders vorteilhafte Ausgestaltung des erfindungsgemäßen Nähgarnes vor, daß hierbei die Einzelfasern der Fasergarnumspinnung eines jeden Vorgarnes eine mittlere Stapellänge zwischen 25 mm und 70 mm, vorzugsweise zwischen 33 mm und 43 mm, besitzen.To further increase the hairiness in the sewing thread according to the invention optimize and further increase the sewing performance increase sees a particularly advantageous embodiment of the sewing thread according to the invention that the individual fibers the mean of the fiber yarn spinning of each roving Stack length between 25 mm and 70 mm, preferably between 33 mm and 43 mm.
Besonders geeignet zur Erzielung der eingangs beim erfindungsgemäßen Nähgarn angesprochenen Abdeckung der multifilen Seele eines jeden Vorgarnes ist es, wenn bei dem erfindungsgemäßen Nähgarn der Gesamttiter der Fasern, die für die Fasergarnumspinnung eines Vorgarnes verwendet werden, zwischen 25 dtex und 200 dtex variiert.Particularly suitable for achieving the initially in the invention Sewing thread addressed cover of the multifilament It is the soul of every roving when it comes to the inventive one Sewing thread of the total denier of the fibers used for the thread spinning of a roving used between 25 dtex and 200 dtex varies.
Insbesondere weist das erfindungsgemäße Nähgarn solche Vorgarne auf, die einen Gesamttiter zwischen 70 dtex und 400 dtex besitzen, wobei diese als Coregarne ausgebildeten Vorgarne dann neben der multifilen Seele noch die als Mantel ausgebildete Fasergarnumspinnung mit einer maximalen Einzelfaseranzahl von 41 Einzelfasern und insbesondere weniger als 41 Einzelfasern besitzt. In particular, the sewing thread according to the invention has such rovings that have a total titre between 70 dtex and 400 dtex own, these rovings designed as core yarns then in addition to the multifilament soul as a coat trained fiber yarn spinning with a maximum number of individual fibers of 41 individual fibers and in particular less than Has 41 individual fibers.
Eine besonders gute Korrelation zwischen der Dicke des erfindungsgemäßen Nähgarnes und den gewünschten Eigenschaften wird dann erreicht, wenn das erfindungsgemäße Nähgarn aus zwei bis vier Vorgarnen der vorstehend beschriebenen oder nachfolgend noch zu beschreibenden Art besteht, die unter Ausbildung des Nähgarnes dann miteinander verzwirnt sind. Ein derartiges Nähgarn weist dann insbesondere einen Gesamttiter als fertiges Nähgarn zwischen 140 dtex (2 x 70 dtex) im Minimum und insbesondere maximal einen Titer von 1.600 dtex (4 x 400 dtex) auf und ist nahezu für alle auftretenden Nähoperationen besonders geeignet.A particularly good correlation between the thickness of the invention Sewing thread and the desired properties reached when the sewing thread according to the invention from two to four rovings of those described above or below still to be described type, which under formation of the Sewing threads are then twisted together. Such a thing Sewing thread then has in particular an overall titer as a finished one Sewing thread between 140 dtex (2 x 70 dtex) at a minimum and especially a maximum titer of 1,600 dtex (4 x 400 dtex) and is almost for all sewing operations that occur particularly suitable.
Eine besonders hochfeste Ausgestaltung des erfindungsgemäßen Nähgarnes wird dadurch erreicht, wenn die die Seele bildende multifile erste Garnkomponente eines jeden Vorgarnes oder die Seele zumindestens eines Vorgarnes aus Polyester, insbesondere aus hochfestem Polyester, besteht. Hierunter ist dann insbesondere ein solches Polyethylenterephthalat zu verstehen, das auch unter der im Handel üblichen Bezeichnung hochfeste technische Polyesterfasern angeboten wird, wobei insbesondere hierbei die Intrinsic-Viskosität zwischen 0,5 dl/g und 0,75 dl/g, vorzugsweise zwischen 0,55 dl/g und 0,63 dl/g, variiert. Hierbei wird diese Intrinsic-Viskosität an entsprechenden Polymerlösungen in Dichloressigsäure bei 25 °C bestimmt.A particularly high-strength embodiment of the invention Sewing thread is achieved when the soul multifile first yarn component of each roving or the Soul of at least one roving made of polyester, in particular made of high-strength polyester. Below is then especially to understand such a polyethylene terephthalate, that also under the name of the high-strength standard in the trade Technical polyester fibers are offered, in particular the intrinsic viscosity between 0.5 dl / g and 0.75 dl / g, preferably between 0.55 dl / g and 0.63 dl / g, varies. Here, this intrinsic viscosity is appropriate Polymer solutions in dichloroacetic acid determined at 25 ° C.
Bezüglich des Einzelfilamenttiters der als Seele in jedem Vorgarn vorgesehenen multifilen ersten Garnkomponente ist festzuhalten, daß dieser insbesondere zwischen 1 dtex und 6 dtex, vorzugsweise zwischen 1,5 dtex und 3 dtex, variiert.Regarding the single filament titre that as soul in everyone Roving provided multifilament first yarn component to note that this is particularly between 1 dtex and 6 dtex, preferably between 1.5 dtex and 3 dtex, varies.
Vorzugsweise weist das erfindungsgemäße Nähgarn solche Vorgarne auf, bei denen die multifile erste Garnkomponente, die die Seele eines jeden Vorgarnes bildet, eine Filamentzahl insbesondere zwischen 16 und 300, vorzugsweise eine Einzelfilamentzahl zwischen 24 und 96, besitzt.The sewing thread according to the invention preferably has such rovings on which the multifilament first yarn component, the forms the soul of every roving, a filament number in particular between 16 and 300, preferably a single filament number between 24 and 96.
Ein besonders vorteilhaftes Nähverhalten weisen solchen Ausführungsformen des erfindungsgemäßen Nähgarnes auf, bei denen die zweite Garnkomponente, die die Umspinnung eines jeden Vorgarnes ausbildet, ein Fasergarn aus Polyesterfasern und/oder aus cellulosischen Fasern, insbesondere aus Baumwollfasern, ist. Wird hierbei als Fasergarn eine Polyesterfaser für die Umspinnung eingesetzt, so bietet dies gegenüber den Ausgestaltungen des erfindungsgemäßen Nähgarnes, die eine Umspinnung aus cellulosischen Fasern besitzen, noch den zusätzlichen Vorteil, daß ein derartiges Nähgarn dann ausschließlich aus Polyester besteht und somit in einem Einstufenverfahren unter Verwendung von einer Farbstoffklasse, nämlich von Dispersionsfarbstoffen, anfärbbar ist.Such embodiments have a particularly advantageous sewing behavior of the sewing thread according to the invention, in which the second yarn component, which is the spinning of each Roving forms, a fiber yarn made of polyester fibers and / or from cellulosic fibers, in particular from cotton fibers, is. A polyester fiber is used as the fiber yarn used for spinning, so this offers opposite the embodiments of the sewing thread according to the invention, the one Have encapsulation of cellulosic fibers, plus the additional The advantage that such a sewing thread is then exclusive consists of polyester and therefore in a one-step process using one class of dye, namely of disperse dyes, can be dyed.
Der Begriff Polyester steht in dem vorliegenden Text für solche Fasern oder Filamente, die ausschließlich oder weitestgehend aus Polyethylenterephthalat bestehen.The term polyester stands for such in the present text Fibers or filaments made exclusively or largely consist of polyethylene terephthalate.
Eine besonders gute und weniger haarige Abdeckung wird bei solchen Ausführungsformen des erfindungsgemäßen Nähgarnes sichergestellt, bei denen für die Umspinnung eines jeden Vorgarnes solche Fasern ausgewählt werden, deren Einzelfasertiter zwischen 0,6 dtex und 4 dtex, insbesondere zwischen 0,8 dtex und 2 dtex, variiert.A particularly good and less hairy cover is used ensured such embodiments of the sewing thread according to the invention, for those for the covering of each roving such fibers are selected, their single fiber titer between 0.6 dtex and 4 dtex, in particular between 0.8 dtex and 2 dtex, varies.
Fasern, Fasergarne oder Stapelfasern im Sinne der vorliegenden Anmeldung sollen alle übereinstimmend solche fadenförmigen Gebilde bezeichnen, die eine begrenzte Länge, insbesondere eine Länge zwischen 25 mm und 70 mm, aufweisen.Fibers, fiber yarns or staple fibers in the sense of the present Registration should all match such thread-like Denote structures that have a limited length, in particular have a length between 25 mm and 70 mm.
Insbesondere weist jedes Vorgarn in dem erfindungsgemäßen Nähgarn ein Massenverhältnis von erster Garnkomponente zur zweiten Fasergarnkomponente, die die Umspinnung der ersten, als Seele dienenden Garnkomponente ausmacht, von 50 : 50 bis 75 : 25 und vorzugsweise von 58 : 42 bis 68 : 32 auf.In particular, each roving in the invention Sewing thread is a mass ratio of the first thread component to second fiber yarn component, which is the spinning of the first, yarn component serving as soul, from 50:50 to 75:25 and preferably from 58:42 to 68:32.
Eine besonders geeignete und einfach anzufärbende Ausführungsform des erfindungsgemäßen Nähgarnes sieht vor, daß hierbei jedes Vorgarn eine vom Material her identische erste Garnkomponente, d.h. ein Seelenmaterial, aufweist, das mit einer vom Material her identischen Fasergarnumwindung umsponnen ist. Mit anderen Worten besteht beispielsweise bei dieser Ausführungsform ein jedes Vorgarn und eine jede dem Vorgarn zugeordnete Fasergarnumspinnung aus Polyester, so daß dieses insgesamt aus Polyester bestehende Nähgarn dann mit Dispersionsfarbstoffen in einem Arbeitsschritt angefärbt werden kann.A particularly suitable and easily colored embodiment of the sewing thread according to the invention provides that each roving is a first material that is identical Yarn component, i.e. a soul material, which with wound around a fiber yarn winding identical in material is. In other words, for example, this one Embodiment of each roving and each of the roving assigned fiber yarn spinning from polyester, so that this sewing thread made entirely of polyester with disperse dyes can be stained in one step can.
Insbesondere dann, wenn die spezifische Festigkeit eines jeden Vorgarnes 40 cN/tex und 55 cN/tex variiert, weist ein aus diesen Vorgarnen hergestelltes erfindungsgemäßen Nähgarn eine überragende Festigkeit auf, so daß es für nahezu alle Nähoperationen geeignet ist.Especially when the specific strength of each Rovings 40 cN / tex and 55 cN / tex varied, shows one sewing thread according to the invention produced in these rovings Outstanding strength, making it suitable for almost all sewing operations suitable is.
Diese Aussage gilt auch für solche Ausführungsformen des erfindungsgemäßen Nähgarnes, bei denen vorzugsweise die absolute Festigkeit des Vorgarnes zwischen 320 cN und 2.400 cN variiert.This statement also applies to such embodiments of the invention Sewing threads, where preferably the absolute Strength of the roving between 320 cN and 2,400 cN varies.
Unabhängig von den zuvor wiedergegebenen spezifischen und absoluten Festigkeiten der Vorgarne, die sich in entsprechenden, nahezu identischen Festigkeitswerten des fertigen Nähgarnes widerspiegeln, ist es besonders geeignet und vorteilhaft, wenn das erfindungsgemäße Nähgarn aus solchen Vorgarnen erstellt wird, deren Schlingenfestigkeit zwischen 60 % und 70 % der absoluten und/oder zuvor genannten Festigkeiten beträgt. Hier hat sich gezeigt, daß aus derartigen Vorgarnen erstellten Ausführungsformen des erfindungsgemäßen Nähgarnes dann ebenfalls eine Schlingenfestigkeit zwischen 60 % und 70 % der absoluten Festigkeiten der Nähgarne einstellt, so daß dementsprechend derartige Ausführungsformen des erfindungsgemäßen Nähgarnes besonders bevorzugt werden.Regardless of the specific and absolute reproduced above Strengths of the rovings, which can be found in corresponding almost identical strength values of the finished sewing thread reflect, it is particularly suitable and advantageous if the sewing thread according to the invention from such rovings is created, whose loop strength is between 60% and 70 % of the absolute and / or the aforementioned strengths. Here it has been shown that from such rovings created embodiments of the sewing thread according to the invention then also a loop strength between 60% and 70 % of the absolute strength of the sewing threads so that accordingly such embodiments of the invention Sewing threads are particularly preferred.
Um diese Schlingenfestigkeit zu messen, werden jeweils zwei, ineinandergreifende Schlingen des Vorgarnes in ein Reißprüfmeßgerät eingespannt und so lange unter Messung der Kraft belastet, bis ein Riß des Vorgarnes bzw. des Nähgarnes eintritt. To measure this loop strength, two, interlocking loops of roving in a tear tester clamped in and loaded for so long while measuring the force, until a rip in the roving or sewing thread occurs.
Die vorliegende Erfindung betrifft desweiteren ein Verfahren zur Herstellung der zuvor beschriebenen Ausführungsformen des erfindungsgemäßen Nähgarnes.The present invention further relates to a method for producing the previously described embodiments of the sewing thread according to the invention.
Bei dem erfindungsgemäßen Verfahren zur Herstellung des erfindungsgemäßen Nähgarnes werden zunächst mindestens zwei Vorgarne erstellt, wobei zur Erstellung eines jeden Vorgarnes eine aus Fasergarnen erstellte Lunte zusammen mit der als Seele dienenden multifilen Garnkomponente einer Spinneinrichtung zugeführt und dort versponnen wird. Hiernach werden die so erstellten mindestens beiden Vorgarne, bei denen es sich um Coregarne handelt, miteinander verzwirnt, wodurch das erfindungsgemäße Nähgarn ausgebildet wird. Im Unterschied zum Stand der Technik wird bei dem erfindungsgemäßen Verfahren die Lunte des Fasergarnes unmittelbar vor dem Zuführen zur Spinneinrichtung so weit verdichtet, daß im fertigen Nähgarn die Fasergarnumspinnung von mindestens einem Vorgarn über den Querschnitt des Nähgarnes gesehen maximal 41 Einzelfasern, vorzugsweise weniger als 41 Einzelfasern und insbesondere zwischen 20 Einzelfasern und 38 Einzelfasern, aufweist. Mit anderen Worten wird bei dem erfindungsgemäßen Verfahren die Lunte des Fasergarnes (zweite Garnkomponente) so weit verdichtet, daß eine reduzierte Anzahl an Fasergarnen zusammen mit der als Seele dienenden multifilen Garnkomponente versponnen, vorzugsweise verzwirnt, wird.In the method according to the invention for producing the invention Sewing threads are initially at least two Rovings created, being used to create each roving a fuse made from fiber yarn together with the as Soul-serving multifilament yarn component of a spinning device is fed and spun there. After that the so created at least two rovings that are is core yarns, twisted together, whereby the inventive Sewing thread is formed. In contrast to State of the art in the method according to the invention the sliver of the fiber yarn immediately before being fed to the Spinning device compressed so far that in the finished sewing thread the fiber yarn spinning of at least one roving over the Cross-section of the sewing thread seen a maximum of 41 individual fibers, preferably less than 41 individual fibers and in particular between 20 individual fibers and 38 individual fibers. With in other words, in the method according to the invention Fuse of the fiber yarn (second yarn component) compressed so far that put together a reduced number of fiber yarns spun with the multifilament yarn component serving as soul, preferably twisted.
Das erfindungsgemäße Verfahren weist im Prinzip analog die Vorteile auf, die zuvor für das erfindungsgemäße Nähgarn bereits beschrieben sind, so daß zur Vermeidung von Wiederholungen hierauf verwiesen wird. Insbesondere ist jedoch festzuhalten, daß das erfindungsgemäße Verfahren besonders wirtschaftlich unter Einsparung von Material anwendbar ist, daß es im Vergleich zum herkömmlichen Verfahren schneller ausführbar ist und daß das hiernach erstellte erfindungsgemüße Nähgarn hervorragende und universal einsetzbare Näheigenschaften besitzt, wie dies vorstehend ausführlich beschrieben ist.In principle, the method according to the invention has the same Advantages that already exist for the sewing thread according to the invention are described so that to avoid repetition this is referred to. In particular, however to note that the inventive method is particularly is economically applicable while saving material, that it is faster compared to the conventional method is executable and that the created according to the invention Sewing thread excellent and universal sewing properties has, as described in detail above is.
Um die zuvor beim erfindungsgemäßen Nähgarn beschriebene Einsparung an Fasern in der Fasergarnumspinnung zu bewirken, bietet es sich insbesondere an, daß die beim erfindungsgemäßen Verfahren erzeugte Lunte des Fasergarnes unmittelbar vor dem Zuführen zur Spinneinrichtung so weit verdichtet wird, daß sie dem 10-fachen bis 25-fachen Volumen des gesponnenen Vorgarnes, insbesondere dem 15-fachen bis 20-fachen Volumen des gesponnenen Vorgarnes, entspricht. Bedingt dadurch, daß die der Spinneinrichtung zusammen mit dem Seelenmaterial zugeführte Lunte des Fasergarns in der Regel nur eine begrenzte Dicke, d.h. insbesondere eine Dicke von etwa 1 bis 5 Lagen des Fasergarns, aufweist, kann das Volumen der Fasergarnlunte näherungsweise gleichgesetzt werden mit der Breite, die die Fasergarnlunte einnimmt, so daß die zuvor wiedergegebene Aussage bezüglich der Verdichtung näherungsweise der nachfolgenden Aussage entspricht. Dies bedeutet, daß bei dem erfindungsgemäßen Verfahren die von der Lunte eingenommene Breite auf das 10-fache bis 25-fache, insbesondere auf das 15-fache bis 20-fache, der Dicke des gesponnenen Vorgarnes verdichtet wird.To the saving previously described in the sewing thread according to the invention effect on fibers in the fiber yarn spinning, it is particularly useful that the inventive The process produced a sliver of the fiber yarn immediately before the feed to the spinning device is compressed so far that they are 10 times to 25 times the volume of the spun Rovings, especially 15 times to 20 times the volume of the spun roving. Due to the fact that that fed to the spinning device together with the core material Fibers of the fiber yarn usually only a limited one Thickness, i.e. in particular a thickness of about 1 to 5 layers of the fiber yarn, the volume of the fiber yarn sliver can are approximately equated with the width that the Fibrous thread fastener takes, so that the previously reproduced statement with regard to the compression approximately the following Statement corresponds. This means that in the invention Process the width occupied by the fuse 10 times to 25 times, especially 15 times up to 20 times the thickness of the spun roving becomes.
Um die zuvor angesprochene Verdichtung der Lunte bei dem erfindungsgemäßen Verfahren besonders einfach und wirkungsvoll und ohne Störung des Produktionsablaufes herbeizuführen, bietet es sich als besonders vorteilhaft an, wenn diese Verdichtung der Lunte über Druckluft und/oder insbesondere über ein Vakuum herbeigeführt wird.To the previously mentioned compression of the fuse in the invention The process is particularly simple and effective and bring about without disrupting the production process, offers it turns out to be particularly advantageous if this compression the fuse about compressed air and / or especially about a Vacuum is brought about.
Die so nach dem erfindungsgemäßen Verfahren hergestellten Vorgarne, die jeweils durch Verspinnen, insbesondere durch ein Verzwirnen des multifilen Seelenmaterials mit einer Fasergarnkomponente unter Einhaltung der zuvor angesprochenen Einzelfaseranzahl von maximal 41 Einzelfasern, insbesondere von weniger als 41 Einzelfasern, erstellt werden, werden dann bei dem erfindungsgemäßen Verfahren diese Vorgarne unter Ausbildung des fertigen Nähgarnes miteinander verzwirnt, wobei hierfür ein Drehungsbeiwert α zwischen 115 und 160 ausgewählt wird.The so produced by the inventive method Rovings, each by spinning, especially by twisting the multifilament core material with a fiber yarn component in compliance with the previously mentioned Number of individual fibers of a maximum of 41 individual fibers, in particular of less than 41 individual fibers, will then be created in the process according to the invention, these rovings with training of the finished sewing thread twisted together, whereby a rotation coefficient α between 115 and 160 was selected for this becomes.
Insbesondere liegt bei dem erfindungsgemäßen Verfahren der Drehungsbeiwert α', der für die Herstellung des Vorgarnes verwendet wird, zwischen 80 und 130, wobei selbstverständlich die für die Zwirndrehung ausgewählte Drehrichtung entgegengesetzt zur Drehrichtung des Vorgarnes ist.In particular, in the method according to the invention Coefficient of twist α 'for the production of the roving is used between 80 and 130, of course the direction of rotation selected for twisting the thread to the direction of rotation of the roving.
Die zuvor angesprochenen Drehungsbeiwerte α bzw. α' sind dabei
wie folgt definiert:
In dieser Formel bedeutet Nm die Garnfeinheit (Titer), angegeben in Nummer metrisch.In this formula Nm means the yarn count (titer) in number metric.
Das erfindungsgemäße Nähgarn wird nachfolgend anhand eines Ausführungsbeispiels im Vergleich zu einem Standardnähgarn näher erläutert.The sewing thread according to the invention is described below using a Embodiment compared to a standard sewing thread explained in more detail.
Zur Erzielung von Vergleichswerten wurde zunächst nach dem konventionellen Verfahren ein Vorgarn ersponnen, wobei als Ausgangsmaterial für dieses Vorgarn eine Multifilamentseele mit einem Titer von 139 dtex mit einem Fasergarn mit einem Gesamttiter von 65 dtex und einem Vordrehungsbeiwert α' von 110 in S-Richtung verzwirnt wurde. Hierfür wurde ein Massenverhältnis von Filamentmaterial (multifile Seele) von 68,1 % und ein Fasergarnanteil (Fasergarnumspinnung) von 31,9 % ausgewählt, wobei das so erstellte Vorgarn dann einen Titer von effektiv 204 dtex aufwies. Dieses Vorgarn besaß eine lineare Festigkeit von 1.040 cN bzw. eine spezifische Festigkeit von 50,98 cN/tex, wobei die Schlingenfestigkeit bei 676 cN lag.To achieve comparative values, the first step was after conventional method spun a roving, where as The starting material for this roving is a multifilament core with a titer of 139 dtex with a fiber yarn with a Total titre of 65 dtex and a pre-rotation coefficient α 'of 110 was twisted in the S direction. For this there was a mass ratio of filament material (multifile core) of 68.1% and selected a fiber yarn proportion (fiber yarn spinning) of 31.9%, the roving thus created then has a titer of effectively had 204 dtex. This roving was linear Strength of 1,040 cN or a specific strength of 50.98 cN / tex, the loop strength being 676 cN.
Die verwendeten Fasern der Fasergarnumwindung wiesen einen Einzeltiter von 1,3 dtex auf und besaßen eine Stapellänge von 38 mm.The fibers used in the fiber yarn wrap had one Individual titers of 1.3 dtex and had a stack length of 38 mm.
Sowohl das Seelenmaterial als auch die Stapelfaserumwindung bestand aus Polyester (Polyethylenterephthalat). Both the soul material and the staple fiber wrapping consisted of polyester (polyethylene terephthalate).
Zwei dieser Vorgarne, die Coregarne darstellen, wurden anschließend unter Ausbildung des fertigen Nähgarnes miteinander verzwirnt, wobei für diese Zwirnung, die in Z-Richtung erfolgte, ein Drehungsbeiwert α von 125 ausgewählt wurde. Das so erstellte fertige Nähgarn, das nachfolgend auch als Standardnähgarn bezeichnet ist, wies einen Gesamttiter von 440 dtex auf.Two of these rovings, which are core yarns, were subsequently with formation of the finished sewing thread together twisted, with this twist being in the Z direction a rotation coefficient α of 125 was selected. The finished sewing thread created in the following, also as standard sewing thread had a total titer of 440 dtex on.
Von diesem Standardnähgarn wurden Querschnitte erstellt, um so die Faseranzahl der Fasergarnumwindung eines jeden Vorgarnes zu bestimmen. Hierzu wurden über eine Länge von 2 m fünf Querschnitte angefertigt. Mikroskopisch wurde dann die Anzahl der Einzelfasern in der Fasergarnumspinnung eines jeden Vorgarnes ausgezählt. Nach Abspulen von jeweils 50 m des Standardnähgarnes wurde dann diese Messung viermal wiederholt, so daß insgesamt 25 Querschnitte mikroskopisch ausgewertet wurden.Cross sections were created from this standard sewing thread so the number of fibers of the fiber yarn winding of each roving to determine. For this purpose, five were over a length of 2 m Cross sections made. The number then became microscopic of the individual fibers in the fiber yarn spinning of each roving counted. After unwinding 50 m of the standard sewing thread this measurement was then repeated four times that a total of 25 cross sections were evaluated microscopically.
Die Messung der Anzahl der Fasergarne im Querschnitt des fertigen Standardnähgarnes ergab, daß die Fasergarnumspinnung eines jeden Vorgarnes im Mittelwert 50,17 Fasern aufwies.The measurement of the number of fiber yarns in the cross section of the finished Standard sewing thread showed that the fiber thread spinning of each roving had an average of 50.17 fibers.
Unter Verwendung der gleichen Ausgangsmaterialien (sowohl multifiles Seelenmaterial als auch Fasergarnmaterial) wurde nach dem beanspruchten Verfahren ein Vorgarn ersponnen, wobei unmittelbar vor der Spinneinrichtung, in die gemeinsam das multifile Seelenmaterial und die Fasergarnlunte eingeführt wurde, die Fasergarnlunte auf die 18-fache Breite der Dicke des gesponnenen Vorgarnes unter Anwendung eines Vakuums verdichtet wurde. Für dieses gemeinsame Verspinnen der multifilen Seele mit der Fasergarnlunte wurde ein Drehungsbeiwert α' gewählt, der dem zuvor genannten Drehungsbeiwert α' entspricht.Using the same starting materials (both multifilament soul material as well as fiber yarn material) a roving spun according to the claimed process, wherein immediately in front of the spinning device, in which the multifilament soul material and the fiber yarn fastener introduced was the fiber yarn fastener to 18 times the width of the thickness of the spun roving compacted using a vacuum has been. For this multifilament spinning together Core with the fiber yarn fuse was a twist factor α ' chosen, which corresponds to the aforementioned rotation coefficient α '.
Das so erstellte Vorgarn wies einen Effektivtiter von 188 dtex und eine Massenverteilung von Filament zu Faseranteil von 73,9 zu 26,1 auf.The roving thus produced had an effective titer of 188 dtex and a mass distribution from filament to fiber content from 73.9 to 26.1.
Die lineare Festigkeit des so hergestellten Vorgarnes betrug 1.060 cN, die spezifische Festigkeit lag bei 56,38 cN/tex.The linear strength of the roving thus produced was 1,060 cN, the specific strength was 56.38 cN / tex.
Die Schlingenfestigkeit des Vorgarnes betrug 690 cN.The loop strength of the roving was 690 cN.
Das Vorgarn wies eine S-Drehung auf.The roving had an S twist.
Zwei dieser Vorgarne wurde unter Ausbildung des Nähgarnes, das nachfolgend als Nähgarn E bezeichnet ist, miteinander verzwirnt, wobei die Zwirnung in Z-Richtung unter dem zuvor angegebenen Drehungsbeiwert α erfolgte.Two of these rovings were made with the formation of the sewing thread, which is hereinafter referred to as sewing thread E, with each other twisted, with the twist in the Z direction below the previous one specified rotation coefficient α was carried out.
Durch Querschnitte und mikroskopische Auswertung wurde die Anzahl der Fasern in jeder Fasergarnumspinnung eines jeden Vorgarnes bestimmt, wobei die Bestimmungsmethode zuvor beschrieben ist.Through cross-sections and microscopic evaluation the Number of fibers in each fiber yarn spinning of each Roving determined, the method of determination described above is.
Als Ergebnis dieser Bestimmung der Anzahl der Fasern in der Fasergarnumspinnung eines jeden Vorgarnes ist festzuhalten, daß beim Nähgarn E die Anzahl der Fasern in der Faserumspinnung eines jeden Vorgarnes im Mittel 37,69 betrug. Das fertige Nähgarn wies einen Gesamttiter von 407 dtex auf.As a result of this determination of the number of fibers in the Fiber yarn spinning of each roving is to be recorded, that the sewing thread E is the number of fibers in the fiber covering of each roving averaged 37.69. The finished Sewing thread had a total titer of 407 dtex.
Dickenmessungen am Standardnähgarn und am Nähgarn E ergaben, daß das Nähgarn E im Vergleich zum Standardnähgarn eine 10 % geringe Dicke aufwies.Thickness measurements on standard sewing thread and on sewing thread E, that the sewing thread E has a 10% compared to the standard sewing thread had a small thickness.
Unter verschärften Nähbedingungen, d.h. beim industriellen Nähen mit einer Nähgeschwindigkeit von 7.000 Stichen/Minute eines Köpergewebes, 5-lagig, wurde das Nähverhalten des Standardnähgarnes mit dem Nähverhalten des Nähgarnes E verglichen. Hierbei konnte festgestellt werden, daß das Nähverhalten von beiden Garnen gut war, jedoch das Nähgarn E im Vergleich zum Standardnähgarn eine 15 % längere Naht ermöglichte, bis es zum Fadenbruch kam. Dieses verbesserte Nähverhalten belegt eindeutig den nähtechnischen Vorteil des Nähgarnes E, das sich vom Standardnähgarn lediglich in der Anzahl der Fasern in der Fasergarnumwindung eines jeden Vorgarnes im Gesamttiter und einer geringeren Dicke unterscheidet.Under tightened sewing conditions, i.e. in industrial Sew at a sewing speed of 7,000 stitches / minute of a 5-ply twill weave became the sewing behavior of the standard sewing thread compared to the sewing behavior of sewing thread E. It was found that the sewing behavior of both yarns was good, but the sewing thread E in comparison enabled a 15% longer seam to the standard sewing thread, until the thread broke. This improved sewing behavior clearly demonstrates the technical advantage of the sewing thread E, which differs from standard sewing thread only in number the fibers in the thread of each roving differs in total titer and a smaller thickness.
Claims (23)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19911757A DE19911757A1 (en) | 1999-03-16 | 1999-03-16 | Sewing thread and method for producing a sewing thread |
| DE19911757 | 1999-03-16 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1036866A2 true EP1036866A2 (en) | 2000-09-20 |
| EP1036866A3 EP1036866A3 (en) | 2003-11-05 |
| EP1036866B1 EP1036866B1 (en) | 2010-12-22 |
Family
ID=7901202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00103561A Expired - Lifetime EP1036866B1 (en) | 1999-03-16 | 2000-02-19 | Sewing thread and method for the production of a sewing thread |
Country Status (6)
| Country | Link |
|---|---|
| US (2) | US6425237B1 (en) |
| EP (1) | EP1036866B1 (en) |
| AT (1) | ATE492668T1 (en) |
| DE (2) | DE19911757A1 (en) |
| ES (1) | ES2357484T3 (en) |
| PT (1) | PT1036866E (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE355406T1 (en) * | 2001-08-16 | 2006-03-15 | Teijin Ltd | MACHINE SEWING THREAD MADE OF FILAMENTS |
| US6701703B2 (en) * | 2001-10-23 | 2004-03-09 | Gilbert Patrick | High performance yarns and method of manufacture |
| EP2522422A3 (en) * | 2003-11-24 | 2013-03-06 | Michael Lefenfeld | Silica gel compositions containing alkali metals and alkali metal alloys |
| US7594381B1 (en) * | 2004-01-15 | 2009-09-29 | American & Efird, Inc. | Sewing thread |
| WO2019111830A1 (en) * | 2017-12-04 | 2019-06-13 | クラレトレーディング株式会社 | Twisted yarn and twisted yarn structure using same |
| US11598027B2 (en) * | 2019-12-18 | 2023-03-07 | Patrick Yarn Mills, Inc. | Methods and systems for forming a composite yarn |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4495760A (en) * | 1981-06-12 | 1985-01-29 | Vanhelle Michel E A | Process and apparatus for spinning cored filaments, and cored filaments thus obtained |
| EP0472873A1 (en) * | 1990-08-17 | 1992-03-04 | Amann & Söhne GmbH & Co. | Yarn, particularly a sewing yarn, and method of producing such a yarn |
| EP0569891A1 (en) * | 1992-05-12 | 1993-11-18 | AMANN & SÖHNE GmbH & Co. | Yarn and method for manufacturing a yarn |
| EP0569890A1 (en) * | 1992-05-12 | 1993-11-18 | AMANN & SÖHNE GmbH & Co. | High tensile sewing yarn and method for manufacturing such a sewing yarn |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19815053B4 (en) * | 1998-04-03 | 2006-01-05 | Saurer Gmbh & Co. Kg | A method of making a false twist and spinning machine therefor |
| US6405519B1 (en) * | 2000-02-23 | 2002-06-18 | Burke Mills, Inc. | Composite, break-resistant sewing thread and method |
-
1999
- 1999-03-16 DE DE19911757A patent/DE19911757A1/en not_active Withdrawn
-
2000
- 2000-02-19 EP EP00103561A patent/EP1036866B1/en not_active Expired - Lifetime
- 2000-02-19 AT AT00103561T patent/ATE492668T1/en active
- 2000-02-19 ES ES00103561T patent/ES2357484T3/en not_active Expired - Lifetime
- 2000-02-19 DE DE50016045T patent/DE50016045D1/en not_active Expired - Lifetime
- 2000-02-19 PT PT00103561T patent/PT1036866E/en unknown
- 2000-03-16 US US09/526,373 patent/US6425237B1/en not_active Expired - Fee Related
-
2002
- 2002-04-30 US US10/135,640 patent/US6546711B2/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4495760A (en) * | 1981-06-12 | 1985-01-29 | Vanhelle Michel E A | Process and apparatus for spinning cored filaments, and cored filaments thus obtained |
| EP0472873A1 (en) * | 1990-08-17 | 1992-03-04 | Amann & Söhne GmbH & Co. | Yarn, particularly a sewing yarn, and method of producing such a yarn |
| EP0569891A1 (en) * | 1992-05-12 | 1993-11-18 | AMANN & SÖHNE GmbH & Co. | Yarn and method for manufacturing a yarn |
| EP0569890A1 (en) * | 1992-05-12 | 1993-11-18 | AMANN & SÖHNE GmbH & Co. | High tensile sewing yarn and method for manufacturing such a sewing yarn |
Also Published As
| Publication number | Publication date |
|---|---|
| US20020139103A1 (en) | 2002-10-03 |
| US6546711B2 (en) | 2003-04-15 |
| ATE492668T1 (en) | 2011-01-15 |
| EP1036866A3 (en) | 2003-11-05 |
| DE19911757A1 (en) | 2000-09-21 |
| DE50016045D1 (en) | 2011-02-03 |
| ES2357484T3 (en) | 2011-04-26 |
| US6425237B1 (en) | 2002-07-30 |
| EP1036866B1 (en) | 2010-12-22 |
| PT1036866E (en) | 2011-01-04 |
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