SE192409C1

SE192409C1 -

Info

Publication number: SE192409C1
Authority: SE
Publication date: 1964-01-01

Description

Prioritet begcird fran den 4 juni 1958 (USA) Foreliggande uppfinning hanfiir sig till ett nytt garn och till ett satt att framstalla detsamma. Garnet enligt foreliggande uppfinning omfattar en lagtvinnad silkefibertrad av textiltyp och en elastisk trad snodda tillsammans. Flerfibertraden ar relativt otojbar, medan den elastiska traden kan strackas och draga ihop sig fran det strackta tillstandet. Priority given from June 4, 1958 (USA) The present invention relates to a new yarn and to a method of producing the same yarn. The yarn of the present invention comprises a textile type twisted silk fiber yarn and an elastic yarn twisted together. The multi-fiber thread is relatively inelastic, while the elastic thread can be stretched and contract from the stretched condition.

Flerfibertraden och den elastiska traden aro anordnade och avpassade sa i det sammansatta garnet, att flerfibertraden och den elastiska tra.- den, (la den sistnamnda dr strackt, bilda ett tvinngarn, och att silkefibertraden, (la den elastiska traden dr hop dragen, ehuru det sammansatta garnet Or i stort sett rakt, ar svept omkring det elastiska garnet i lOsa vary. The multi-fiber yarn and the elastic yarn are arranged and adapted in the composite yarn, so that the multi-fiber yarn and the elastic yarn, (let the latter stretch), form a twine, and that the silk fiber yarn, (let the elastic yarn draw together, though the composite yarn Or substantially straight, is wrapped around the elastic yarn in lOsa vary.

Garnet enligt foreliggande uppfinning kan anyandas for framstallning av nya textilprodukter genom vavning, stickning eller annan hopflatning av sadana garner enbart eller tillsammans med vanliga garner for bildning av tyger. Trika kan salunda stickas uteslutande med garnet enligt fOreliggande uppfinning eller ocksa kan ett tyg ydvas under anyandning av garnerna enligt foreliggande uppfinning som inslag, etc. The yarn of the present invention can be used for the manufacture of new textile products by weaving, knitting or other flattening of such yarns alone or together with ordinary yarns for forming fabrics. Trika can thus be knitted exclusively with the yarn according to the present invention or a fabric can also be knitted while using the yarns according to the present invention as weft, etc.

Enligt de foredragna utforingsformerna ay f oreliggande uppfinning Or garnet elastiskt i den betydelse, som lagges i termen elastisk Mom textilindustrien for att beteckna en elasticitet som en gummikarna eller elastomerkarna med endast textilholje besitter, sasom beskrives i de amerikanska patentskrifterna 2 024 155 och 2 024 156, eller ett dubbelt textilholje, sascm beskrives i exempelvis den amerikanska patentskriften 1 822 847. De foredragna utforingsformerna enligt foreliggande uppfinning kunna salunda anvandas for samma andamal som sadana resarer, ehuru anvandningen av den for sadana andamal i allmdnhet kommer att medfora en ny textur och/eller ge billigare tyger. Garnerna enligt foreliggande uppfinning kunna Oven anYandas i andra fall, dâ man kan utnyttja deras nya texturegenskaper. According to the preferred embodiments of the present invention, the yarn is elastic in the sense of the term elastic in the textile industry to denote an elasticity possessed by a rubber core or elastomeric-only elastomeric marks, as described in U.S. Pat. Nos. 2,024,155 and 2,024,156. , or a double textile cover, as described in, for example, U.S. Pat. No. 1,822,847. The preferred embodiments of the present invention may thus be used for the same purpose as such resers, although the use of it for such purposes will generally entail a new texture and / or or provide cheaper fabrics. The yarns according to the present invention can also be used in other cases, where their new textural properties can be utilized.

Da. den elastiska traden Or hopdragen, ehuru det sammansatta garnet Or i stort sett rakt, Or silketraden svept runt den elastiska traden i nagot oordnade vary, som ha storre diameter an den elastiska traden innanfor slingorna. De enskilda fibrerna i flerfibertrallen Oro uppluckrade Iran sin normala, tatliggande parallella fordelning. Garnet fOrlanar tyget en tilltalande textur. Texturem art beror pa samverkan mellan den elastiska traden och flerfibertraden i det sammansatta garnet. Enligt foredragna utfOringsformer med utpraglad textur ha slingorna av flerfibertraden avsevart mycket storre diameter an den elastiska traden, da den Or nagot hopdragen. Enligt vissa utforingsformer kan flerfibertraden bilda oregelbundna oglor, som icke dro genomdragna av den elastiska traden. Om det sammansatta garnet enligt foredragna utforingsformer aylastas frail alla krafter, som straya att h011a det rakt, slar det en rad kinkar samt bilda oglor, savida det joke har behandlats for undanrojande av denna egenskap. Yes. the elastic thread Or is pulled together, although the composite yarn Or is substantially straight, Or the silk thread wrapped around the elastic thread in somewhat disordered variations, which have a larger diameter than the elastic thread inside the loops. The individual fibers in the multi-fiber trolley Oro relaxed Iran's normal, tangible parallel distribution. The yarn gives the fabric an appealing texture. The nature of the texture depends on the interaction between the elastic thread and the multi-fiber thread in the composite yarn. According to preferred embodiments with a pronounced texture, the loops of the multi-fiber thread have a much larger diameter than the elastic thread, since it is slightly contracted. According to certain embodiments, the multifilament yarn may form irregular beads which are not pulled through by the elastic yarn. If the composite yarn according to preferred embodiments is applied to all forces, which strain to keep it straight, it strikes a series of kinks and forms beaks, unless the joke has been treated to eliminate this property.

Vid anYandning av de foredragna utforingsformerna av foreliggande uppfinning tillampas en teknik, som Or nagot modifierad i forhallande till den, corn vanligen anyandes vid framstallning av tidigare typer av elastiska garner. Garnerna enligt fOreliggande uppfinning aro uttojda under tvinningen, exempelvis genom strackning. I det 2— — fardiga tyget draga de elastiska tradarna ihop sig, dock i allmanhet utan att kinkar sifts pa det sammansatta garnet. Vavaren skall salunda utga fran det nya garnet i strackt tillstand vid vavning av tyget, vilket strider emot det normala forfarandet med vanliga, elastiska garner. When using the preferred embodiments of the present invention, a technique which is somewhat modified in relation to it is usually applied differently in the manufacture of prior art types of elastic yarns. The yarns of the present invention are stretched during twisting, for example by stretching. In the finished fabric, the elastic threads contract, but generally without kinks being sifted onto the composite yarn. The weaver must thus start from the new yarn in a stretched condition when weaving the fabric, which is contrary to the normal procedure with ordinary, elastic yarns.

Tyger framstallda av foredragna utforingsformer av garnet enligt foreliggande uppfinning ha mjuk kansel. I sadana tyger astadkommes genom anvandning av dessa garner en effekt, vilken i viss man liknar den effekt, som astadkommes genom anvandning i tyger av s. k. texturgarner eller voluminosa garner, exempelvis sadana garner, som framstallas genom spinning av ett termoplastsilkegam, som sedan fixeras i varme och darefter snos tillbaka, eller genom krusning av ett termoplastsilkegarn, eller varmefixering av ett krusat termoplastsilkegam. Tygerna ha ungefar samma elasticitetsmodul och strackningsegenskaper som tyger framstallda av gummitradar och resartradar av tidigare typ. Fabrics made from preferred embodiments of the yarn of the present invention have a soft pulpit. In such fabrics, an effect is achieved by using these yarns, which in some respects is similar to the effect achieved by using in fabrics of so-called texture yarns or voluminous yarns, for example such yarns, which are produced by spinning a thermoplastic silk yarn, which is then fixed in heat. and then twisted back, or by crimping a thermoplastic silk yarn, or heat fixing a crimped thermoplastic silk yarn. The fabrics have approximately the same modulus of elasticity and stretching properties as fabrics made from rubber yarns and travel yarns of previous types.

Garnet kan framstallas i en vanlig tvinnmaskin, genom att en osnodd flerfibersilketrad ledes till tvinnstallet tillsammans med en elastisk trad, som lampligen Or osnodd, med sadan hastighet, sasom kommer att framga av det foljande, att man Mr det har beskrivna garnet. The yarn can be produced in an ordinary twisting machine, by passing an unwound multi-fiber silk thread to the twisting stall together with an elastic thread, which is suitably twisted, at such a speed as will be apparent from the following, that the yarn described therein.

Uppfinningen kommer i det foljande att beskrivas narmare med hanvisning till bifogade ritning. Fig. 1 är en schematisk sidovy av en tvinnmaskin, som kan anvandas for tillverkning av garnet enligt foreliggande uppfinning. Fig. 2 Or en nagot schematisk sidovy av ett garn enligt en utforingsform i sitt helt eller ndstan helt utdragna loge. Fig. 3 är en nagot schematisk sidovy av garnet enligt fig. 2 i hopdraget tillstand, dock medan garnet halles tillrackligt strackt, sá att det joke kan sla kinkar. Fig. 4 Er en schematisk sidovy av garnet enligt fig. 2 hopdraget annu mer On enligt fig. 3. The invention will be described in more detail below with reference to the accompanying drawing. Fig. 1 is a schematic side view of a twisting machine which can be used for manufacturing the yarn according to the present invention. Fig. 2 Is a somewhat schematic side view of a yarn according to an embodiment in its fully or almost completely extended lodge. Fig. 3 is a somewhat schematic side view of the yarn according to Fig. 2 in the contracted state, however, while the yarn is kept sufficiently stretched, so that the joke can strike kinks. Fig. 4 is a schematic side view of the yarn according to Fig. 2 contracted further On according to Fig. 3.

I fig. 1 visas en maskin, vilken i viss man liknar en vanlig omspinningsanordning for gummitrad. En relativt otOjbar flerfibertrad 10 ledes fran en spole 11 till nypet mellan roterande valsar 12 och 13. Den elastiska traden 14 ledes fran en forra.dsspole 15, som drives av en roterande trumma 16, vilken loper mot den elastiska traden pa spolen 15, till nypet mellan valsarna 12 och 13. Malian a ena sidan spolen 15 och a andra sidan valsarna 12 och 13 tojes den elastiska traden 14. Fig. 1 shows a machine which in some respects resembles a conventional rubber wire spinning device. A relatively inelastic multi-fiber strand 10 is passed from a spool 11 to the nip between rotating rollers 12 and 13. The elastic strand 14 is passed from a front spool 15, which is driven by a rotating drum 16, which runs against the elastic strand of the spool 15, to the nip between the rollers 12 and 13. On one side of the spool 15 and on the other side of the rollers 12 and 13 the elastic thread 14 is pulled.

Fran nypet mellan valsarna 12 och 13 lopa tradarna 14 och 10 till en tradforare 17 och sedan genom en lOpare 19 pa ringen 20 till en bobbin 21 pa en roterande spindel 22. Mellan valsarnas 12 och 13 nyp samt bobbinen 21 tvinnas tradarna 14 och 10 samman till bildning av det sammansatta garnet 23. From the nip between the rollers 12 and 13, the threads 14 and 10 run to a thread guide 17 and then through a runner 19 on the ring 20 to a bobbin 21 on a rotating spindle 22. Between the nips of the rollers 12 and 13 and the bobbin 21, the threads 14 and 10 are twisted together. to form the composite yarn 23.

I fig. 2 visas det sammansatta, helt eller nastan helt strackta garnet 23, dâ det lindas upp pa bobbinen 21. Tradarna 14 och 10 tvinnas samman, dvs. ingendera traden svepes som en hylsa runt den andra som en karna utan bagge folja i stort sett lika banor omkring varandra. Tradens 10 eller tradens 14 (eftersom bagge tradama folja samma banor) tvinningsskruv är relativt Mug, dvs. antalet tvinnvarv per langdenhet trad 10 och 14 i det nya garnet ar relativt lagt i jamforelse med de kanda omspunna, elastiska gamernas. Det maste emellertid finnas ett minsta antal vary per langdenhet av flerfibergarnet fOr att man skall uppna Onskad textur. Flerfibertraden 10 maste salunda uppvisa minst 197 Sil m snoddvarv, für att denna textur skall uppnas, och har lampligen minst 394 S/1 m snoddvarv, sO att flerfibertraden i stort sett ligger skruvformigt runt elastomertraden 14, da garnet 23 Or hopdraget. Fig. 2 shows the composite, completely or almost completely stretched yarn 23, when it is wound up on the bobbin 21. The threads 14 and 10 are twisted together, i.e. neither line is wrapped like a sleeve around the other like a karna without ram follow roughly equal paths around each other. Trade 10 or trade 14 (since ram traps follow the same paths) twist screw is relatively Mug, ie. the number of twists per unit length thread 10 and 14 in the new yarn is relatively in comparison with the well-spun, elastic yarns. However, there must be a minimum number of variations per unit length of the multi-fiber yarn in order to achieve the desired texture. The multi-fiber thread 10 must thus have at least 197 Sil m of twist turns, in order for this texture to be achieved, and has at least 394 S / 1 m twist turns, so that the multi-fiber thread is generally helically around the elastomer thread 14, when the yarn 23 is contracted.

I fig. 3 visas garnet 23 nagot schematiskt i hopdraget tillstand, ehuru det fortfarande Or strackt avsevart i forhallande till sin totala tojning. Fig. 3 kan anses representera ett garn, som har fatt draga ihop sig till c:a halften av den langd, vid vilken de i foljande tabell 1 angivna matningarna ha gjorts. Flerfibertraden 10 Or, da garnet 23 har detta tillstand och traden 14 Or hopdragen, svept lost runt traden 14 med ett stort antal vary, vilka ha avsevart storre diameter an den omslutna delen av traden 14. De enskilda varven ha icke likformig storlek Over hela garnets langd. I fig. 3, som utgOr en avbildning av ett garnprov, ligga vissa vary, sasom varven 53, relativt tatt intill traden 14, medan mellanliggande vary 54 skjuta langt ut fran traden 14. Traden 10 lindas i allmanhet runt traden 14 i voluminost, skruvformigt till-stand med de enskilda varven eller slingorna i genomsnitt med avsevart mycket stone diameter On .traden 14. In Fig. 3, the yarn 23 is shown somewhat schematically in the contracted state, although it is still stretched considerably in relation to its total elongation. Fig. 3 can be considered to represent a yarn which has been allowed to contract to about half the length at which the feeds specified in the following Table 1 have been made. The multi-fiber yarn 10 Or, when the yarn 23 has this condition and the yarn 14 Or contracted, wrapped loosely around the yarn 14 with a large number of varies, which have considerable larger diameters than the enclosed part of the yarn 14. The individual yarns have non-uniform size over the whole yarn length. In Fig. 3, which is a view of a yarn sample, certain yarns, such as yarns 53, lie relatively adjacent to the yarn 14, while intermediate yarns 54 project far beyond the yarn 14. The yarn 10 is generally wound around the yarn 14 in voluminous, helical shape. condition with the individual turns or loops on average with a considerable amount of stone diameter On .traden 14.

Overskottet av flerfibertrad 10 kan uttryckas fOrhallandet mellan flerfibertradens 10 genomsnittliga langd X per vary i forhallande till den teoretiska langden Y pa ett vary i en skruvlinje med en diameter, som Or lika med elastomertradens 14 genomsnittliga diameter. Y beraknas under tillampning av den valkanda formeln for en skruvlinj es langd. The excess of multi-fiber thread 10 can be expressed as the ratio between the average length X per vary of the multi-fiber thread 10 in relation to the theoretical length Y of a vary in a helix with a diameter equal to Or equal to the average diameter of the elastomer thread 14. Y is calculated while applying the selectable formula for the length of a helix.

C = V(2 a M)2 + N2 i vilken M betecknar skruvens radie och N betecknar dess stigning. Formeln fOr Y p0 grundval av formeln I Or Y 142 R)2 h2II Denna teoretiska langd kan berdknas for varje givet tillstand for det sammansatta garnet, em man for ett tillstand kanner till antalet vary, flerfibertradens langd och langden pa den avslappnade elastomertraden per langdenhet av sammansatt garn och den avslappnade elastomertradens genomsnittsdiameter. Vardet »ID> utgor det inverterade vardet pa den avslappnade elastomertradens langd per langdenhet garn dividerad med antalet tvinningsvarv for elastomertraden och flerfiberfraden per denna langdenhet. Vardet R betecknar den avslappnade elastomertradens grovlek, dvs. nominella radie. C = V (2 a M) 2 + N2 in which M denotes the radius of the screw and N denotes its pitch. The formula for Y on the basis of the formula I Or Y 142 R) 2 h2II This theoretical length can be calculated for any given state of the composite yarn, if one state knows the number of variables, the length of the multi-fiber thread and the length of the relaxed elastomer thread per unit length of composite yarn and the average diameter of the relaxed elastomer thread. The value »ID> is the inverted value of the length of the relaxed elastomer thread per unit length of yarn divided by the number of twist turns of the elastomer thread and the multi-fiber thread per unit length. The value R denotes the coarseness of the relaxed elastomeric thread, i.e. nominal radius.

For framstallning av ett givet garn enligt foreliggande uppfinning skola flerfibertraden 10 och — —3 elastomertraden 14 sammanforas pa sadant satt, att om Y beraknas enligt ekvation III forhallande till den avslappnade, elastomertraden 14, forhallandet X/Y blir minst 1,4 och lampligen är mindre an 2,5. For the production of a given yarn according to the present invention, the multifilament yarn 10 and the elastomeric yarn 14 should be joined together in such a way that if Y is calculated according to Equation III relative to the relaxed elastomeric yarn 14, the ratio X / Y becomes at least 1.4 and is suitably less than 2.5.

Vardet ph Y i en trad varierar uppenbarligen nagot, da det sammansatta garnet strackes eller far draga ihop sig. Vardet pa X ferblir emellertid konstant for varje givet garn oberoende av dess strackningstillstand. Om en langdenhet 1,0 avslappnad elastomertrad 14 dâ garnet är straekt liar langden L1, och om La A= — L, blir elastomertradens radie R, vid L, lika med Ri=RVA,IV h = -A- och under dessa fOrhallanden blir Y, Yl112 -= VA (2 a r)2 + Vardet Y for varje garn varierar salunda med forhallandet A (procentuell strackning), varjamte forhallandet X/Y ocksa varierar. Genom differentiering av uttrycket under rotteclmat i ekvation IV och reducering till 0 kan man fa maximiforhallandet X/Y for varje givet gam. The value ph Y in a thread obviously varies somewhat, as the composite yarn is stretched or allowed to contract. However, the value of X remains constant for each given yarn regardless of its state of tension. If a length unit 1.0 is a relaxed elastomeric line 14 when the yarn is stretched, the length L1, and if La A = - L, the radius of the elastomeric line R, at L, is equal to R 1 = RVA, IV h = -A- and under these conditions Y, Yl112 - = VA (2 ar) 2 + The value Y for each yarn varies accordingly with the ratio A (percentage stretching), and the ratio X / Y also varies. By differentiating the expression under the rat food in Equation IV and reducing it to 0, one can get the maximum ratio X / Y for each given gamut.

I ett garn enligt foreliggande uppfinning är detta maximiforhallande pa X/Y minst 1,7 och är lampligen hOgst 3,0. In a yarn according to the present invention, this maximum ratio of X / Y is at least 1.7 and is suitably at most 3.0.

Da det sammansatta garnet 23 drager ihop sig, foras de enskilda fibrerna i flerfibertraden 10 i dennas olika vary och bukter isar Iran sitt normala, tatt packa.de lage, dvs. flerfibertraden 10 svaller upp sasom synes vid varven 53 och 54. As the composite yarn 23 contracts, the individual fibers in the multi-fiber row 10 are lined in its various bays and bays. the multi-fiber thread 10 swells up as seen at turns 53 and 54.

I fig. 4 visas det sammansatta garnet 23 avslappnat annu mar an i fig. 3. Sasom framgar av figuren ha flera av varven bojts ut annu mer Iran traden 14 och i traden 10 har bildats en ogla 51, som icke Or genomdragen av traden 14. Fig. 4 shows the composite yarn 23 relaxed in the same way as in Fig. 3. As can be seen from the figure, several of the yarns have been bent out even more in the Iran line 14 and in the line 10 an ogla 51 has been formed, which is not penetrated by the line 14. .

Traden 10 bestar av ett lagsnott garn bestaende av flera, kontinuerliga fibrer. Silke och de fiesta syntetiska fibrerna, sasom nylon (polyamidfibrer), acetat, viskos (rayon) och dacron (orienterad superpolyes ter) kunna erhallas i form av kontinuerliga fibrer. Tra den 10 utgor salunda en silke- och harmed avses, att den innehaller tillrackligt mange fibrer, vanligen 7 eller mera, sO att den kan svalla upp och forlana det sammansatta garnet en viss textur, da den elastiska traden 14 drager ihop sig. Syntet- eller konstfiber, exempelvis de ovan namnda, framstallas vanligen i form av flerfibertradar, sa att exempelvis de nylontradar, som ha anvants I kanda resarer med gummikarna, kunna erhallas med 7-68 fibrer per trad. De flerfibertradar, vilka lire bast som overdrag for resarer med gummikarna ay tidigare kand typ, dvs. med 7 till c:a 70 fibrer och 20-210 denier, lampa sig f Or anvandning enligt fOreliggande uppfinning. The thread 10 consists of a layered yarn consisting of several, continuous fibers. Silk and the most synthetic fibers, such as nylon (polyamide fibers), acetate, viscose (rayon) and dacron (oriented superpolyesters) can be obtained in the form of continuous fibers. The thread 10 thus constitutes a silk and is meant to contain a sufficient amount of fibers, usually 7 or more, so that it can swell up and give the composite yarn a certain texture, as the elastic thread 14 contracts. Synthetic or synthetic fibers, for example those mentioned above, are usually produced in the form of multi-fiber threads, so that, for example, the nylon threads which have been used in known travels with the rubber bands can be obtained with 7-68 fibers per thread. The multi-fiber wires, which lire bast as a cover for travelers with the rubber bands ay previously known type, ie. with 7 to about 70 fibers and 20-210 denier, suitable for use in accordance with the present invention.

Traden 10 utgores salunda av en trad med lag snodd, varmed avses, att dess snodd icke Or tillracklig for att forhindra den onskade prepareringen av fibrerna eller uppsvallningen av traden, sasom har beskrivits oven, vid hopdragning av traden 14. En flerfibertrad, som Or helt osnodd, Or naturligtvis ocksa lamplig. Garner av syntet- eller konstfibrer tillhandahallas emellertid for narvarande med sa kallad tillverkarsnodd av c:a 2099 S/1 m och det har visat sig, att denna snodd icke forhindrar den onskade uppsvallningen, van f Or man for narvarande fOredrager att anvanda dessa garner. En nagot starkare snodd, exempelvis upp till c:a 197 S/1 m, skulle naturligtvis icke forhindra den onskade uppluckringen av traden, sa att trad med sadan tvinning skulle vara lamplig for anvandning enligt foreliggande uppfinning. Men an 197 S/1 m forsamrar i allmanhet den onskade uppluekringen, varfor tradar med sa stark snodd i allmanhet icke lampa sig for anvandning enligt fOreliggande uppfinning. Vid berakning av fierfibertradens snodd bortser man fran den snodd, som astadkommes genom hoptyinning av tradarna 10 och 14, emedan traden 10, da den ligger i skruvform runt traden 14 icke Or tvinnad raknat utefter sin langdaxel, ehuru traden 10, om den skulle dragas ut i en rak linje genom en kraft verkande vid dess andar, skulle visa sig ha den snodd, som astadkommes genom hoptvinning av tradarna 10 och 14. The thread 10 is thus constituted by a thread with a straight twist, which means that its twist is not sufficient to prevent the desired preparation of the fibers or the swelling of the thread, as described above, when contracting the thread 14. A multi-fiber thread, which is completely osnodd, Or of course also lamplig. Yarn of synthetic or man-made fibers is, however, at present supplied with a so-called manufacturer's cord of about 2099 S / 1 m, and it has been found that this cord does not prevent the desired swelling, for which it is currently preferred to use these yarns. A somewhat stronger cord, for example up to about 197 S / 1 m, would of course not prevent the desired loosening of the thread, so that a thread with such a twist would be suitable for use according to the present invention. But at 197 S / 1 m it generally collects the desired uplift, which is why trades with such a strong twist generally do not lend themselves to use according to the present invention. When calculating the cord of the fiber optic wire, the cord obtained by thinning the wires 10 and 14 is disregarded, since the wire 10, as it lies in helical shape around the wire 14, is not twisted straight along its long axis, although the wire 10, if it were to be pulled out in a straight line by a force acting on its spirits, would turn out to have the twist, which is effected by coiling the trades 10 and 14.

Silkefibertraden 10 skall naturligtvis vara fri frhn amnen, som forhindra den onskade uppluckringen vid den elastiska tradens 14 hopdragning, exempelvis genom att de enskilda fibrerna bringas att hafta vid varandra. The silk fiber thread 10 must, of course, be free from the blanks which prevent the desired loosening during the contraction of the elastic thread 14, for example by making the individual fibers adhere to each other.

Den elastiska traden 14 utgores av en elastomertract, som kan strackas flera ganger sin langd i avspant tillstand och kan draga ihop sig kraftigt, dO en strackningsspanning avlastas. Man kan anvanda en trad av natur- eller konstgummi, och en polyuretanelastomertrad utgOr en sarskilt lamplig konstgummitrad for vissa utforingsformer, emedan den har god slitstyrka och andra fordelaktiga egenskaper, sasom kommer att forklaras narmare i det foljande. Vanliga gummitthclar, vilka lampa sig for anvandning som traden 14, aro naturligtvis valkanda Mom resartekniken. De ibland fOredragna, moderna polyuretanelastomertradarna aro mindre valkanda Mom resartekniken, ehum la.mpliga polyuretanelastomertradar Oro kanda. Ett exempel ph en sal:Ian elastomertrad beskrives i den amerikanska patentskrif ten 2 953 839 Det tillverkas elastomertradar, som kunna straekas till atminstome fern ganger sin ursprungliga langd och upp till 600-800 °/,, dvs. till 7-9 ganger sin ursprungliga langd utan att brista. De ha hittills i allmanhet tillyerkats som enfibertradar med en genomsnittlig diameter av 0,4060,127 mm. The elastic thread 14 is constituted by an elastomeric tract, which can be stretched several times its length in the relaxed state and can contract sharply when a stretching stress is relieved. A natural or artificial rubber thread can be used, and a polyurethane elastomer thread is a particularly suitable artificial rubber thread for certain embodiments, as it has good wear resistance and other advantageous properties, which will be explained in more detail below. Ordinary rubber gloves, which are suitable for use as the thread 14, are, of course, the preferred travel technology. The sometimes preferred, modern polyurethane elastomer wires are less valcanda Mom resar technology, ehum suitable polyurethane elastomer wires Oro kanda. An example of a seal: Ian elastomer thread is described in U.S. Pat. No. 2,953,839. Elastomer threads are manufactured which can be stretched to at least four times their original length and up to 600-800 ° / to 7-9 times its original length without breaking. To date, they have generally been referred to as single fiber radiators with an average diameter of 0.4060.127 mm.

Om den elastiska traden 14 bestar av polyuretanelastomer, har det visat sig, att det samman- III V VI 4— — satta garnet kan upphettas f Or andring av dess egenskaper. Urn ett sammansatt garn med en polyuretantrad som den elastiska parten halles vid 149° C under hogst 10 mini det i fig. 3 visade, strackta laget, forlorar den en stor del av sin benagenhet for att bilda lockar och kinkar, vilken benagenhet kan vara olamplig i vissa fall. Efter en sadan behandling kommer vidare det sammansatta garnet icke att sã latt draga ihop sig till en langd, som är mindre an det sammansatta garnets langd vid tiden for behandlingen. If the elastic thread 14 consists of polyurethane elastomer, it has been found that the composite yarn can be heated to change its properties. In the case of a composite yarn having a polyurethane thread in which the elastic part is held at 149 ° C for at least 10 minutes, the stretched layer shown in Fig. 3, it loses a large part of its tendency to form curls and kinks, which tendency may be unsightly. in some cases. Furthermore, after such treatment, the composite yarn will not be so easily contracted to a length which is less than the length of the composite yarn at the time of treatment.

Ehuru den elastiska traden 14 for vissa andamal kan snos pa ungefar samma satt som gummikarnan snos vid framstallning av en tidigare resar med en enda hylsa, foredrager man att icke sno den elastiska traden. Anvandningen av osnodd, elastisk trad innebar stora besparingar vid tillverkning av de foredragna utfOringsformerna ay uppfinningen. Although the elastic thread 14 for some purposes can be twisted in much the same way as the rubber core is twisted in making a previous journey with a single sleeve, it is preferred not to twist the elastic thread. The use of untwisted, elastic thread entailed great savings in the manufacture of the preferred embodiments of the invention.

Flerfibertraden 10 och den hopdragbara traden 14 avpassas lampligen sa fOr ett givet stycke av det sammansatta garnet 23, att detta far en jamn brottpunkt, dvs. bagge tradarna 10 och 14 na sin brottpunkt vid ungefar samma forlangning av garnet 23. For vissa andamal kan det vara lampligt att nagot modifiera flerfibertradens 10 och den elastiska tra.dens 14 egenskaper, genom att det exempelvis har visat sig lampligt att Oka den elastiska tradens 14 langd nagot, varigenom flerfibertraden 10 nara brottpunkten att upptaga nagot stOrre del av brottbelastningen. The multi-fiber yarn 10 and the contractible yarn 14 are suitably adapted so that for a given piece of the composite yarn 23, this has an even breaking point, i.e. the threads 10 and 14 reach their breaking point at approximately the same length of the yarn 23. For some purposes it may be appropriate to modify the properties of the multi-fiber thread 10 and the elastic thread 14 by, for example, it having been found appropriate to increase the elastic thread. 14 length somewhat, whereby the multi-fiber line 10 near the breaking point to take up a slightly larger part of the breaking load.

Det nya garnet enligt foreliggande uppfinning uppvisar en enastaende kombination av olika Mom textiltekniken onskvarda egenskaper. Det uppvisar salunda den textur, som utmdrker sa kallade effektgarner, sasom voluminosa garner, och har samma elasticitetsmodul som enkelt eller dubbelt omspunna elastomertradar. Det nya garnet liknar enkelt omspunna elastomergarner av tidigare typ, genom att elastomertraden är kombinerad med en icke strackbar tra.d. Det skiljer sig Iran denna enkelt omspunna, elastiska trad till sin textur, anvandningen av en lagsnodd silkefibertrad, obalansen i de fOredragna utforingsformerna, dá garnet är obehandlat, samt den lOsa och nagot oregelbundna fordelningen av flerfibertraden i forhallande till elastomertraden, varigenom garnet enligt foreliggande uppfinning far sin nya textur. The new yarn of the present invention exhibits a unique combination of various Mom textile techniques. It thus exhibits the texture that distinguishes so-called effect yarns, such as voluminosa yarns, and has the same modulus of elasticity as single or double-spun elastomer threads. The new yarn resembles simply spun elastomeric yarns of the previous type, in that the elastomeric yarn is combined with a non-stretchable yarn. Iran differs from this simple spun, elastic thread in its texture, the use of a twisted silk fiber thread, the imbalance in the preferred embodiments when the yarn is untreated, and the loose and somewhat irregular distribution of the multi-fiber thread in relation to the elastomer thread according to the invention. far its new texture.

Foljande specifika exempel pa garn belysa uppfinningen ytterligare. Vid studium av foljande tabell Mir man taga hansyn till, att uppgifterna ha erhallits vid matningar pa garner med en langd av 90 cm eller mindre eller pa en brakdel av 0,5 kg av det sammansatta garnet, sa att varje smarre matfel kan ha multiplicerats i de varden, som anges i tabellen. De angivna vardena ange i vissa fall, exempelvis raderna id, le, 2c, 3a och 3d genomsnittet for minst tre avlasningar. Uppgiftema Oro trots detta exakta Mom de toleransgranser, som godtagas Mom resartekniken och dessa genomsnittsvarden anvandas i foreliggande beskrivning och bifogade patentansprak fOr att identifiera ftireliggande uppfinning. * 4.3 • Eu.) CSCScq 0co CO LCDCf5s PL:c't ,t Pi 0as 51 .0 .pto "0 :0 cs -V„ CS CzicaCLU)CS 414i>4 at,g * * /1,.... 0000 CO 6is Nocr v■I c4 N Cfp NCq 000'D t '6 In 0 01 Zoci , E Z Ci• O N C 4 cn C• CS In 0 CSN Z 6 :70 NC";s COCSD C.: 1", r-q t•-•00 113, 00 r-c CSCS ,z 14 . cr0 ICJ ^ r. cp z Z ta g 1C0 c‘i o Z o „ N1.6 LO N 1. Elastomertrad Material (enkeltritd) (b) Grovlek (avspand diameter) i mm (2R) 2. Flerfibertrad Material Snodd (Z-snodd) (per meter fore tvinningen med elastomertraden) (e)* Cm flerfibertrad per m sammansatt garn 3. Sammansatt garn (a)* M per kg (b) Elastomer (viktprocent) (c) Flerfibertrad (viktprocent) (d)* Tvinning av elastomertraden med flerfibertraden per m sammansatt garn (e) Genomsnittslangd pa flerfibertrad- slingan i mm (X) (3d genom 2c) (1) Langden i mm for ett snoddvarv med diametern 2 R och samma stigning som enligt 1d genom 3d (Y beraknat for fullstandigt avslappnad elastomertra.d) ForhAllande X/Y raknat ph fullstandigt avslappnad elastomertrad (3e genom 31) Langd i mm for ett snoddvarv med samma diameter som elastomertraden, cla det sammansatta garnet är avslappnat till tillstandet if och liar en stigning av if genom 3d (Y minimum) Maximiforhallande X/Y (3e genom 3h) En part En part 11 denierdenier 6868 fibrerfibrer nylonnylon En part 140 deniex 68 fibrer nylon En part 140 denier 68 fibrer nylon En part En part 11 denierdenier 6868 fibrerfibrer nylonnylon 2 parter 140 denier 68 fibrer nylon En part 40 denier 13 fibrer nylon En part 140 denier 68 fibrer nylon 106 1106 1117 126 114 116 122 41486 41439600 40660 38604 33680 19132 106460 302 31 31 33 28 46 46 70 69 70 70 69 67 72 54 54 6802 668 839 1078 156622 141246 1,61,37 1,59 1,32 1,09 0,80 1,83 0,81 1,06 0,84 0,83 0,80,83 0,82 0,81 1,12 0,0,84 1,96 1,66 1,88 1,58 1,33 0,991 1,61,47 1,27 0,70,71 0,78 0,72 0,69 0,62 0,99 0,47 0,7 2,18 1,94 2,04 1,82 1,59 1,29 1,86 1,73 1,42 * Matningarna gjorda med det sammansatta garnet halt strdokt. ** Beraimat. The following specific examples of yarns further illustrate the invention. When studying the following table, we must take into account that the data were obtained when feeding on yarns with a length of 90 cm or less or on a fraction of 0.5 kg of the composite yarn, so that any serious food defects may have been multiplied in the values given in the table. The specified values indicate in some cases, for example the lines id, le, 2c, 3a and 3d the average for at least three readings. The information is nevertheless concerned with the exact limits of tolerance accepted by the travel technique and these average values are used in the present description and the appended patent claims in order to identify the present invention. * 4.3 • Eu.) CSCScq 0co CO LCDCf5s PL: c't, t Pi 0as 51 .0 .pto "0: 0 cs -V„ CS CzicaCLU) CS 414i> 4 at, g * * / 1, ... .0000 CO 6is Nocr v ■ I c4 N Cfp NCq 000'D t '6 In 0 01 Zoci, EZ Ci • ONC 4 cn C • CS In 0 CSN Z 6: 70 NC "; s COCSD C .: 1", rq t • - • 00 113, 00 rc CSCS, z 14. cr0 ICJ ^ r. cp z Z ta g 1C0 c'io Z o „N1.6 LO N 1. Elastomer thread Material (single step) (b) Roughness (relaxation diameter) in mm (2R) 2. Multi-fiber thread Material Twist (Z-twist) (per meter pre-twist with the elastomer thread) (e) * Cm multi-fiber thread per m composite yarn 3. Composite yarn (a) * M per kg (b) Elastomer (weight percent) (c) Multi-fiber thread (weight percent) (d) * Twisting of the elastomer thread with the multi-fiber thread per m of composite yarn (e) Average length of the multi-fiber thread loop in mm (X) (3d through 2c) (1) Length in mm for a twist with the diameter 2 R and the same pitch as according to 1d through 3d (Y calculated for completely relaxed elastomeric wire.d) Ratio X / Y shaved ph completely relaxed elastomeric wire (3rd through 31) Length in mm for a twist turn with the same diameter as the elastomer thread, cla the composite yarn is relaxed to the state if and liar an increase of if by 3d (Y minimum) Maximum ratio X / Y (3e by 3h) One party One party 11 denier denier 6868 fiber fibers nylon nylon One party 140 deniex 68 fiber nylon One party 140 denier 68 fiber nylon One party One party 11 denier denier 6868 fiber fiber nylon nylon 2 parties 140 denier 68 fiber nylon One party 40 denier 13 fiber nylon One party 140 denier 68 fiber nylon 106 1106 1117 126 114 116 122 41486 41439600 40660 38604 33680 19132 106460 302 31 31 33 28 46 46 70 69 70 70 69 67 72 54 54 6802 668 839 1078 156622 141246 1.61,37 1.59 1.32 1.09 0.80 1.83 0.81 1.06 0.84 0.83 0.80.83 0.82 0.81 1.12 0.0.84 1.96 1.66 1.88 1.58 1.33 0.991 1.61.47 1.27 0.70.71 0.78 0.72 0.69 0.62 0.62 0.99 0.47 0.7 2.18 1.94 2.04 1.82 1.59 1 .29 1.86 1.73 1.42 * The feeds made with the composite yarn content strdokt. ** Beraimat.

*** NominellE. 6— — I denna tabell representera exemplen A, B, C, D, G och H garner enligt foreliggande uppfinning. *** NominalE. In this table, Examples A, B, C, D, G and H represent yarns according to the present invention.

Garnet I utgor ett enkelt omspunnet, elastiskt garn framstallt pa tidigare 'cant satt, exempelvis enligt den amerikanska patentskriften 3 009 311, ehuru det har en nagot ojamn omspinning, och liar med- tagits har for att medverka till belysningen av arten av garnerna enligt foreliggande uppfinning. The yarn I is a simple spun, elastic yarn made in the manner previously described, for example, in U.S. Pat. invention.

Garnerna E och F utgOra fiirsoksgarner, som icke svara mot fareliggande uppfinning samt ha tillverkats och tagits med fOr belysning av foreliggande uppfinning. The yarns E and F constitute freezing yarns which do not correspond to the present invention and have been manufactured and incorporated for the purpose of illustrating the present invention.

Var och en av elastomertradarna i foregaende exempel kan strackas 600-800 %. Ehuru elasto- mertraden enligt exemplen A—F, G och H icke snoddes fore tillverkningen av det elastiska garnet, avvika elastomertradens snodder per langdenhet av det sammansatta garnet fran tvinningen av elastomertraden med flerfibertraden per langdenhet sammansatt garn. Teoretiskt skulle dessa snodder vara lika. Skillnaden torde hero pa det forhallandet, att matningarna ha gjorts under sarskiljning och upptvinning av det samman- satta garnets delar. Om elastomertraden syntes vara fullsffindigt otvinnad, bibehall den i sjalva verket en ringa andel av snodden pa grund av sin »fixering». Each of the elastomer trades in the previous example can be stretched 600-800%. Although the elastomeric thread of Examples A-F, G and H was not twisted prior to the manufacture of the elastic yarn, the twists of the elastomeric yarn per unit length of the composite yarn deviate from the twisting of the elastomeric yarn by the multi-fiber yarn per unit length of composite yarn. Theoretically, these cords would be the same. The difference is probably due to the fact that the feeds were made during separation and winding of the parts of the composite yarn. If the elastomeric thread appeared to be completely unwound, it in fact retains a small proportion of the cord due to its "fixation".

Exempel A svarar mot den nu foredragna hogeffektutforingsformen av uppfinningen. Exempel B skiljer sig fran exempel A genom att garnet, ehuru det omfattar ungefar lika lang elastomertrad, har nagot storre tvinning mellan elastomer- traden och flerfibertraden. Tillagget av tvinningssnodd minskar nagot textureffekten. I tabellen framtrader detta nagot i vardena 3e, 3g och 31. Example A corresponds to the now preferred high power embodiment of the invention. Example B differs from Example A in that the yarn, although comprising about the same length of elastomeric thread, has a somewhat larger twist between the elastomeric thread and the multi-fiber thread. The addition of twist cord slightly reduces the texture effect. In the table, this appears somewhat in values 3e, 3g and 31.

Exempel C skiljer sig fffin exempel A genom att det, ehuru bagge exemplen uppvisa ungefar samma tvinning, har nagot langre elastomertrad an exempel A. Garnet C her nhgot minskad effekt i forhallande till exempel A. I tabellerna framgar detta nagot av raderna 3e, 3g och 31. Ay tabellen framgar emellertid icke att forhallandet mellan flerfibertradens langd (rad 2c) och elastomer- tradens langd (rad 1d) fir nagot storre i exempel B an i exempel A. Harigenom astadkommes ett ibland onskvart resullat, genom att garnet enligt exempel B, dá det narmar sig brottOjningen, kommer att upptaga en stone del av brottbelastningen i flerfibertraden an garnet enligt exempel A. Example C differs from Example A in that, although the ram examples show approximately the same twist, it has a slightly longer elastomeric thread than Example A. The yarn C has a slightly reduced effect in the ratio of Example A. In the tables this is shown somewhat by rows 3e, 3g and 31. However, the table does not show that the ratio between the length of the multi-fiber thread (row 2c) and the length of the elastomeric thread (row 1d) is somewhat larger in Example B than in Example A. This results in a sometimes uneven result, in that the yarn of Example B as it approaches the breaking point, it will absorb a stone portion of the breaking load in the multi-fiber yarn of the yarn of Example A.

En jamforelse av exemplen C och D visar, att exempel D har avsevart sffirre tvinningssnodd an exempel C, ehuru garnet enligt bagge exemplen innehalla ungefar lika lang elastomertrad. Enligt exemplen E och F her snodden okats avsevart och successivt i forhallande till garnet enligt exempel D. Garnen enligt exemplen C, D, E och F ha framstallts med ungefar samma frammatning av komponenterna till snoddstallet, ehuru snodden har Okat successivt for de olika exemplen. Exempel E och F belysa vad som Under, om man overskrider granserna enligt foreliggande upp- finning, dh garnet icke kommer att uppvisa de onskade fbrdelarna. A comparison of Examples C and D shows that Example D has a considerably more twisted twist than Example C, although the yarn according to the ram examples contains approximately the same length of elastomer. According to Examples E and F, the twine has been increased considerably and successively in relation to the yarn according to Example D. The yarns according to Examples C, D, E and F have been produced with approximately the same feed of the components to the twine stall, although the twine has Okat successively for the various examples. Examples E and F illustrate what Under, if one exceeds the limits according to the present invention, ie the yarn will not show the desired advantages.

Garnet enligt exempel G- är tjockare an garnen enligt A—D och H. Garnet enligt exempel H utgor ett fint, tunt garn sasom framgar av rad 3a. Ax raderna 3g och Si framgar, att garnet enligt exempel H faller flare nedre gransen ftir intervallet enligt foreliggande uppfinning. Garnet H har icke sá framtradande textur som exempelvis garnet A. Garnet H är emellertid billigt i tillverkning och ger, om det vaves i ett tyg, ett tyg med utomordentlig kvalitet. The yarn according to example G- is thicker than the yarns according to A-D and H. The yarn according to example H forms a fine, thin yarn as shown in row 3a. Axes rows 3g and Si show that the yarn of Example H falls farther below the range of the range of the present invention. The yarn H does not have as prominent a texture as, for example, the yarn A. However, the yarn H is cheap to manufacture and, if woven into a fabric, gives a fabric of excellent quality.

Ehuru garnen enligt exemplen A—D, G och H skilja sig frail varandra, uppvisa de samtliga tillfredsstallande textur. Garnen enligt exemplen E och F uppvisa icke flagon textureffekt. En jamforelse av vardena enligt raderna 3g och 31 for de olika exemplen visar, att man, om. forhallandet X/Y, da elastomertraden Or helt avslappnad, sjunker under c:a 1,4, icke uppnar det enligt foreliggande uppfinning asyftade resultatet. Oin forhallandet X/Y baserat pa den fullstandigt avslappnade elastomertraden ligger Over c:a 2,50, blir samverkan mellan elastomertraden och flerfibertraden sadan, att man icke far det med foreliggande uppfinning asyftade garnet. Vid tillverkning av garnet pa det satt, som visas i fig. 1, skall man darf Or noga se till, att flerfibertraden 10 och elastomertraden 14 sammanfOras sä, att raknat pa den fullstandigt avslappnade elastomertraden forhallandet X/Y ligger vid c:a 1,402,50. Although the yarns according to Examples A-D, G and H differ from each other, they all have a satisfactory texture. The yarns according to Examples E and F do not show a flake texture effect. A comparison of the values according to lines 3g and 31 for the different examples shows that one, if. the ratio X / Y, when the elastomeric line Or is completely relaxed, falls below about 1.4, does not achieve the result referred to in the present invention. If the ratio X / Y based on the completely relaxed elastomeric thread is above about 2.50, the interaction between the elastomeric yarn and the multi-fiber yarn will be such that the yarn referred to in the present invention will not be obtained. When manufacturing the yarn in the manner shown in Fig. 1, care must be taken to ensure that the multifilament yarn 10 and the elastomeric yarn 14 are joined together so that straight on the completely relaxed elastomeric yarn ratio X / Y is at about 1,402. 50.

Vid jamforelse av vardena enligt rad 3i for de olika exemplen framgar det, att man, om forhallandet X/Y htigst ligger nagot under 1,7 icke far effektgarnet enligt foreliggande uppfinning. Om dessa forhallanden ligger Over ungef Or 3,0, Or sambandet Indian elastomertraden och flerfibertraden shdant, att man icke far effektgarnet enligt foreliggande uppfinning. Vid sammanforing av elastomertraden och flerfibertraden for uppnaende av andamalet enligt uppfinnincien, skall man darfor noga se till, att maximiforhallandet X/Y icke sjunker under c:a 1,7 och icke stiger Over c:a 3,0. When comparing the values according to row 3i for the various examples, it appears that if the ratio X / Y is at most slightly below 1.7, the effect yarn according to the present invention is not obtained. If these ratios are above about 3.0, the ratio of the Indian elastomeric yarn and the multi-fiber yarn is such that the effect yarn of the present invention is not obtained. When joining the elastomeric wire and the multi-fiber wire to achieve the spirit according to the invention, care must therefore be taken that the maximum ratio X / Y does not fall below about 1.7 and does not rise above about 3.0.

En jamforelse av exemplen A—D, G och H med exempel I visar, att det i garnerna enligt foreliggande uppfinning finnes ett overskott av flerfibertrad per vary (rad 3e) utover den mangd, som erfordras for att astadkomma ett valomspunnet, elastiskt garn med ett enkelt holje enligt tidigare hand typ. Garnerna enligt fOreliggande uppfinning kannetecknas av detta overskott av flerfibertrad, sa att denna, da elastomertra.den Or hopdragen, ligger i losa slingor omkring elastomertraden. Det maste salunda finnas tillffickligt manga sadana slingor for att fOrdela flerfibertraden runt elastomertraden relativt jamnt utefter dennas langd. Det maste finnas minst 197 slingor per meter av flerfibertradens langd och i allmanhet finnes minst 394 slingor per meter av denna langd. — —7 A comparison of Examples A-D, G and H with Example I shows that in the yarns of the present invention there is an excess of multi-fiber yarn per vary (row 3e) beyond the amount required to produce a roller-spun elastic yarn having a simple housing according to previous hand type. The yarns of the present invention can be characterized by this excess of multi-fiber yarn, so that when the elastomeric yarn is contracted, it lies in loose loops around the elastomeric yarn. There must therefore be a sufficient number of such loops to distribute the multi-fiber thread around the elastomer thread relatively evenly along its length. There must be at least 197 loops per meter of multi-fiber thread length and in general there are at least 394 loops per meter of this length. - —7

Claims

exam:

1. Elastic yarn comprising a lace, a multi-fiber silk thread and an elastic thread intertwined with each other, characterized in that the multi-fiber thread and the elastic thread are arranged and adapted so that, when the elastic thread is stretched, they are arranged in a tight twist , and that the fiber thread, when the elastic thread is contracted, is wrapped around the elastic thread in loose loops, the average diameter of which is considerably larger than the diameter of the part of the elastic thread which is located inside the loops.

Yarn according to claim 1, characterized in that the elastic thread can be required at least 100% and contract from the required condition, the multi-fiber thread and the elastic thread are arranged and adapted so in relation to each other that the ratio X / Y is at least 1.7, where X is the length of the multi-fiber yarn per unit length of yarn divided by the number of doubling twist turns of the multi-fiber yarn and the elastic yarn per unit length of yarn, and Y = (2 n R) 2A .11: 111-2? dar R anger radien pa. the elastic thread in the relaxed state, h indicates the length of the relaxed thread per unit length of yarn divided by the number of twist turns of the multi-fiber thread and the elastic thread per said unit length of yarn, and A is the ratio between the relaxed state length of the elastic thread in said length new length in the stretched condition of the yarn which is present when Y has a minimum, and the individual fibers in the multi-fiber thread are broken from their normal, tdtpacked and parallel condition, da. the elastic thread Or contracted.

Yarn according to claim 2, characterized in that there is at least 2 doubling twine threads of multi-fiber thread with elastic fraction per cm of the multi-fiber thread.

Yarn according to claim 2, characterized in that the elastic thread consists of an elastomeric thread, which can be extended to at least four times its relaxing length, and there are at least 4 twisting twists multi-fiber thread with elastic thread per cm of the multi-fiber thread.

Yarn according to claim 4, characterized in that the ratio X / Y is at most 3.0.

Yarn according to claim 5, characterized in that the diameter of the elastomeric thread is about 0.041-0.127 mm, the multi-fiber thread has about 7-70 fibers twisted with each other with a twist of less On about 1 vary per cm, each multi-fiber thread has a titer of about 20-210 denier.

Yarn according to patent claim 5, characterized in that the multi-fiber thread consists of nylon or a polyurethane elastomer.

Yarn according to claim 2, characterized in that the multi-fiber yarn and the elastomeric yarn break at approximately the same elongation of the composite yarn.

Yarn according to claim 1, comprising a team knot, multi-fiber silk thread and a rubber thread intertwined with each other, characterized in that the rubber thread can be required at least four times its length in a relaxed state and contract from its elongated state, wherein the Herfiber thread and the rubber thread and prop ortioned said that the ratio X / Y Or at least 1.4, ddr X indicates the length of the multi-fiber thread per unit length of yarn divided by the number of twist twists for the multi-fiber thread and the rubber thread per unit length, and Y = 1T2 n R) 2 h2 in which expression R indicates the the radius of the relaxed rubber thread, h indicates the length of the relaxed rubber thread per unit length of yarn divided by the number of twist twists for the multi-fiber thread and the rubber thread in said length unit yarn, and the yarn in the contracted state of the rubber thread wraps around the rubber fiber thread.

10. A method of producing a yarn according to any one of claims 1-9, characterized in that a multi-fiber artificial silk thread with less than two twists per cm and a stretched elastomer thread is advanced to a turning point, that the multi-fiber thread and the elastomer thread are twisted together in such proportions X / Y in the yarn formed becomes at least 1.4, where X Or is equal to the length of the multi-fiber yarn per unit length of yarn divided by the number of twist twists for the multi-fiber yarn and the elastomer yarn per unit length, and Y = 1 / (2h2 in which expression R denotes the relaxed elastomer yarn radius and h indicate the length of the relaxed elastomeric thread per unit length of yarn divided by the number of twist twists for the multi-fiber yarn and the elastomeric yarn per unit length of yarn.Submit Publications: U.S. Patent Nos. 2,030,610, 2,076,273, 2,354,449.