CN1155022A

CN1155022A - Method for knitting fabric using non-elastic yarn and uncovered elastic yarn, and equipment and wollen sweater fabric structure thereof

Info

Publication number: CN1155022A
Application number: CN 96121067
Authority: CN
Inventors: E·布雷; I·布雷
Original assignee: EI Du Pont de Nemours and Co
Current assignee: EIDP Inc
Priority date: 1995-10-12
Filing date: 1996-10-11
Publication date: 1997-07-23

Abstract

The invention provides a sweater knitting fabric including hard yarns knitted together with elastic yarns. The elastic yarns has substantially even extension along loop rows in the fabric. In a process for knitting the fabric, non-envelopped elastic yarns are fed into a knitting loom, which is fluctuant relatively to request for the yarns during the knitting process, under a condition that a tensile force is substantially even. The sweater knitting fabric can be used for producing clothings of sweaters, gilets, clothes, skintight short drawers, skirts, caps, etc.

Description

With non-stretch yarn with do not clad the structure of the method and apparatus and the knitting needle fabric thereof of stretch yarn knit goods

The present invention relates to by non-stretch yarn and and the knitting fabric of stretch yarn.More particularly, relate to by hard yarn combination and do not clad the knitting needle fabric that the stretch yarn braiding forms.

By hard yarn, for example: the stretch yarn that nylon, wool, cotton yarn and polyester combination were handled, for example: the knitwear that core-spun elastic yarn, covered type elastic yarn or the braiding of tanslanized stretch yarn form are known.This kind fabric generally be by or two kinds of yarns are woven together, perhaps stretch yarn is woven the knitted structure that is formed by hard yarn and makes.The stretch yarn of handling is used for sweater or other knitted outerwear is not ideal, because their manufacturing cost height, and in follow-up clothes manufacturing, get into trouble, for example: color is infiltrated (color grinthrough), random lopping and overweight.

By hard yarn and non-stretch yarn, for example: the knitwear that Spandex yarn (hereinafter to be referred as this yarn) constitutes are known, and have overcome some the problems referred to above.Yet when this class formation wove with known prior art, the fabric that is made into had some undesirable states, for example: the Spandex yarn of fracture, crosspiece, inhomogeneous selvedge and tissue blockage.These undesirable sexual states can cause low quality knitwear and waste product again.And any variation of the feed rate of this yarn all can cause the tension force of this yarn and reducing of drafting force, and this will cause the change in size of ready-made clothes sheet stock.

In the open No.0119536 of the European patent that German Bayer limited company is had, described and a kind of this yarn has been carried out knitting method with hard yarn, wherein the yarn that supplies of this yarn is controlled based on the tensioner of tribology principle by one, and this device operation gets up to retrain this yarn that is infeeded by rubbing action.Method described in the disclosure is disadvantageous, because the tension force of the extremely difficult evenly control yarn that infeeds,---when infeeding yarn when weaving, yarn is grasped indirectly and is discharged.This will cause inhomogeneous and random lopping, and cause the inhomogeneous and random fabric width of the product in this way made.

Therefore, be desirable to provide a kind of method and system, to overcome existing deficiency in the prior art.

The invention provides a kind of knitting needle fabric, it comprises that at least one hard yarn and at least one do not clad stretch yarn, and these yarns are woven into a knitting needle fabric together, and wherein stretch yarn has uniform drafting force basically along each row of fabric.

And the present invention also provides a kind of method that is used to constitute a knitting needle fabric, comprising:

Carry at least one to a braiding common point and do not clad stretch yarn and at least one hard yarn;

With a kind of braiding manufacturing process two kinds of yarns are knitted together, to make a knitting needle fabric;

When the conveying stretch yarn carries out when knitting, for this yarn is selected a desirable tension force degree;

In described knitting process, substantial constant ground keeps described desirable tension force degree, makes the tension force of stretch yarn be no more than 17% with average total departing from of steady state tension of described yarn in the stable state weaving process.

In addition, the present invention also provides a kind of system, and this system can not be woven together and constructs the knitting needle fabric by at least one hard yarn and at least one being cladded stretch yarn, comprising:

Be used at least one stretch yarn and at least one hard yarn being woven in together, so that make the device of a knitting needle fabric with a kind of braiding manufacturing process;

Be used for carrying the device of described elastomeric yarn to described knitting device;

Be used for carrying the device of described hard yarn to described knitting device;

Be used for when described stretch yarn when described knitting device is carried, for it selects the device of a desirable tension force degree;

Be used at described knitting process, substantial constant ground keeps described desirable tension force degree, makes the tension force of stretch yarn be no more than 17% device with average total departing from of steady state tension of described yarn in the stable state weaving process.

Fig. 1 is a perspective view that is used to implement a system of the present invention, comprises this yarn yarn feeder that cooperates with a knitting machine.

Fig. 2 is the perspective view at this yarn yarn feeder shown in Fig. 1.

Fig. 3 is for implementing a perspective view that amplifies of a creel assembly of the present invention.

Fig. 4 is the resolution chart of the amplification of stretch yarn creel shown in Figure 3.

Fig. 5 is a perspective view, shows second embodiment that implements creel assembly of the present invention.

Fig. 6 is the underarm of creel assembly shown in Figure 5 and a drawing in side sectional elevation at creel top.

Fig. 7 is a creel top shown in Figure 6 and a front view of guide wheel.

Fig. 8 is a drawing in side sectional elevation, illustrates in greater detail first embodiment of the guide wheel assembly in the creel top of Fig. 5 to 7.

Fig. 9 is a drawing in side sectional elevation, illustrates in greater detail second embodiment of the guide wheel assembly in the creel top of Fig. 5 to 7.

Figure 10 is the front view of another embodiment at enforcement creel of the present invention top.

Figure 11 is a side view at the creel top of Figure 10.

Figure 12 is a drawing in side sectional elevation of the 12-12 intercepting along the line of the creel top among Figure 11, there is shown creel top and the thread-carrier that is positioned at this top.

Figure 13 is a drawing in side sectional elevation of the thread-carrier among Figure 12.

Figure 14 is a perspective view of the hard yarn tensioning apparatus on knitting machine shown in Figure 1.

Figure 15 is a curve map, shows respectively in the knitwear that the present invention makes, and draws relation between the second month in a season along the selected position of a looped pile line and this yarn, and the contrast of the fabric made from prior art.

Figure 16 is a plane of the technical back of the fabric sheet stock made by the present invention.

Generally speaking, the invention provides a kind of knitting needle fabric, although in knitting process to the need of yarn Seeking Truth interruption and fluctuation, but this knitting needle fabric has basic uniformly stretching. The present invention also provides A kind of method and apparatus can under basic uniformly tension force, not clad stretch yarn to knitting machine feeding Weave this knitting needle fabric.

For purpose of the present invention, " knitting needle fabric " is a kind of flat at a circular band knitting machine or band The fabric that weaves on the knitting machine. This band knitting machine is at the section start of sweater band, at the band that is woven Between insert a separation yarn, and/or weave an end edge (finished edge), for example: one Waistband or cuff. The looped pile structure of this end edge is general different from the band remainder. At this band In the knitting machine, no matter machine is automatic control (for example: machinery or Electronic Control) or manually control, To yarn, comprise that the expense that does not clad stretch yarn all is indirectly or fluctuates. The expense of being interrupted is at flat Cause the periodicity commutation of creel in the knitting machine, in circular knitter, cause from a band to another The cross-over connection of band. The requirement of fluctuation has caused the variation of looped pile structure, and this variation may occur in row Between, for example: in the variation between bar belt body and modified edge, perhaps in a row, for example: In a kind of rib collar that replaces/flat pin looped pile structure. The knitting needle fabric can be used for including, but is not limited to Sweater, vest, clothes, panty, shirt, skirt and cap are at interior clothes.

The drafting force (elongation) of accurately and equably controlling stretch yarn when braiding one knitting needle fabric is gram Take the key of the problems referred to above. Especially it is moderate to work as the yarn drafting force, for example: along putting down of a line fabric looped pile When all stretching less than 4.5 (350% elongation), this is just even more important. This is because drafting force is low Stretch yarn, if feeding during knitting machine tension force variation has taken place, will show significant size difference Or inconsistency.

If yarn tension is consistent basically in weaving process, then yarn feeding rate and knitting machine are to stretch yarn The moment expense be complementary, and can obtain basic uniformly drafting force along stretch yarn. At knitting process In, can be by detecting yarn tension and regulate according to this yarn feeding rate, and remove or reduce and feed to knitting machine The source of friction force that adds during stretch yarn thereon obtains substantially invariable tension force degree.

Not cladding the Spandex yarn is the used preferred stretch yarn of method of the present invention and product. Known not bag Answer the coefficient of friction height of Spandex yarn, and be restricted to a kind of filament fiber, wherein the fibre forming thing Matter is for being at least the long-chain synthetic polymer that 85% block polyurethane consists of by percentage by weight. So And clearly, product of the present invention and method can cooperate and adopt any elastic fibers, for example rubber or poly-Ether-ether is as long as they have the character that is suitable for the knitting needle fabric or weaves this knitted fabric.

Do not clad stretch yarn along the average stretching of a knitted loop line preferably less than 4.5 times of extensions ( 350% elongation), more preferably 1.1 times to 4.5 times extensions (10% to 350% elongation), Most preferably be 1.2 times to 2.5 times extensions (20% to 150% elongation). Do not clad stretch yarn Stretching is uniform along each looped pile line of knitting needle fabric basically. In other words, along the looped pile line from knitting One side of thing changes less than 10% to the stretching of opposite side. Therefore wish that the drafting force that does not clad stretch yarn exists Substantially be uniform in the in succession looped pile line of fabric. In other words, wish the drawing-off of each looped pile line of fabric What the drafting force of each looped pile line of power and other was compared is changed to 8% or littler. Most preferably, edge no matter Still in each looped pile line in succession, the variation of described drafting force is less than 5.5% in each looped pile line.

For the present invention, it is favourable selecting the stretch yarn that do not clad at 10 to 150 dawn. Select approximately The not cladding stretch yarn at 10 to 70 dawn is more favourable.

The device of the transient change by the sensing stretch yarn demand of in the yarn control appliance, packing into and One in response to this sensing device, when attempting variation according to the yarn demand and change Tensity size with box lunch, The device of any tension variation of control stretch yarn can partly be controlled in flat and circular band are knitting The Tensity size of stretch yarn.

Any mechanism that can detect the stretch yarn tension variation all can be used as this sensing device. This mechanism bag Draw together optics, electronics, variable resistor, mechanical device and deformeter (for example piezoelectric pressure (tension force) sensing) Device. Preferably select a kind of mechanical control arm or a kind of strain gauge arrangement.

Sensing device can provide a signal to the fournisseur driving mechanism, and whether the yarn feeding speed of indication stretch yarn Need to regulate. Also can make sensing device provide a signal to the equipment on the thread path, this equipment is with yarn Upwards mention to increase tension force.

Reduce frictional force on the knitting machine yarn feeding path and further strengthened the uniformity of feeding stretch yarn. Can Static yarn guide is replaced to the static yarn guide of low-friction surface (for example polish on the surface by as much as possible Pottery, sapphire or ruby yarn guide) or rotate yarn guide, preferred adopt (for example red at jewel Jewel) yarn guiding wheel that rotates on the bearing. In addition, should remove the barrier on the stretch yarn approach, comprise fixing Yarn guide, also help to reduce the needs to this thread-guiding element.

Method and apparatus of the present invention makes the tension level of stretch yarn remain essentially in a way constant, Make in the stable state knitting process, the deviation of the tension force of stretch yarn and average total steady state tension be approximately 17% or Lower, preferred 10% or lower, most preferably 6% or lower. Control stretch yarn tension force is produced like this The knitting needle fabric distributes substantially even along the drafting force of stretch yarn, thus fabric have substantially uphold uniformly, Retraction and weight per unit area.

In order to understand the present invention more fully, describe below with reference to preferred embodiment and the accompanying drawing of describing these embodiment.

Fig. 1 to 14 embodiment shown, that select in order to describe is a knitting system, comprises this yarn or other stretch yarn for yarn unit 9, and is disclosed in 044 as in U.S. Patent No. 4,752, quotes this part patent as a reference at this.This system also comprises the straight-bar machines of a knitting hard yarn, and this straight-bar machines marks to number 10 generally.As shown in Figure 1, this yarn comprises this Yarn feeder that is installed on the support 16 for yarn unit 9, marks with 14 generally.This yarn 18 infeeds a yarn feeding device 14 from this yarn packing 19, and attempting provides yarn 18 with basic tension force uniformly and drafting force to knitting machine 10 by this device.In Fig. 2, can be clear that,,, be sent to one then and store on the wireline reel 32 so that guide this yarn to cross the automatic stop arm (not shown) of a detection yarn breakage by ceramic guide eye 30 these yarns 18 of guiding.

Yarn feeding device 14 also comprises a yarn tension detector 34 and a cord roller 36.From yarn 18 process on cord roller 36 that stores wireline reel 32, when this yarn 18 is directed to knitting machine 10, be wound with one to two this yarn of circle on the cord roller 36.Carry out sensing by the control arm 38 that roller 36 is housed on it.The relative position of control arm 38 can change according to the quantity of required this yarn 18 of knitting machine.Control arm 38 is handled and is driven the motor internal (not shown) that stores wireline reel 32 and is connected with one.

Select desirable yarn tension size by the thread tension regulator on the setting device 14 53.The variation of can programming of yarn tension size also can keep constant in knitting process.When this yarn demand increased, control arm 38 moved clockwise.This just makes the speed of motor internal increase, and the speed increase of motor internal has improved the rotating speed of storage wireline reel 32, thereby has improved yarn feed speed.If this yarn demand descends, or stops fully, said process is against carrying out, and control arm 38 inhour motions slow down up to wireline reel 32, perhaps staticly gets off.

Knitting machine 10 (for example, the SES202 type of being sold by the smart company in Japanese Wakayama island) comprises the standard needle-bar of straight-bar machines and moves forward and backward to weave the cam box 12 of horizontal looped pile row.Cam box 12 drives a series of generally with the creel shown in 11 (see figure 3)s, so that supply yarn to the knitting needle of knitting machine 10.Knitting machine also comprises a frame plate 13, and being equipped with on it provides the yarn of hard yarn Taper Pipe 15.

Specifically, be loaded with hard yarn on the yarn Taper Pipe 15, for example nylon, artificial fibre, wool yarns or cotton yarn.The yarn that is contained on the Taper Pipe 15 is emitted, and as shown in the figure, passes a standard tensioner 17, and this device keeps the tension force of yarn, and plays the effect of automatic stop arrangement when broken yarn.Hard yarn is brought to generally and indicates with label 20 then, and is amplifying on the side tensioner shown in Figure 14.Side tensioner 20 is known in the art, comprises some tension force equipment components 21, and they in a row constitute, so that some hard yarns are passed therethrough.Many hard yarns 15 can pass a corresponding ceramic guide eye 22 of its tension device element 21 and move.Yarn is from this guide eye is imported into a corresponding guide eye 24 device 20.It is in order to keep the tension force of hard yarn that hard yarn passes that tensioner 20 moves, and also is in order to make the yarn location during for yarns rightly to creel 11.This will be described later.

The window 50 that stretch yarn or this yarn 18 directly pass a corresponding yarn guiding wheel 29 and form at lid 27 from feed carrier 14 (seeing Fig. 1 and 2).Yarn guiding wheel 29 is aimed at the wireline reel device 32 of yarn feeding device 14 (see figure 2)s and the yarn guiding wheel 40 that is installed on creel assembly 11 (see figure 3)s in the horizontal and vertical directions.This has reduced the frictional resistance when this yarn 18 is carried to a great extent.

Indicate and the creel shown in the amplification in Fig. 3 with label 11 generally more now.A creel 11A is used to carry hard yarn 15, and another creel 11B is used to carry this yarn 18.Creel 11 links to each other with one or more creel pieces 41 on guide rail 61.

Different with hard yarn 55 with the angle that pin was of knitting machine when this yarn 18 enters machine, as shown in Figure 3, this has been known in the knitting field of braiding.Therefore, this yarn is placed during braiding the back of hard yarn.Thereby when making ready-made clothes, this yarn is hidden and is contraryly got up, can be not in sight.

By adopting the 3rd an independent creel, perhaps only carry two hard yarns simultaneously with a creel, can second hard yarn and first hard yarn is knitting with this yarn integral body.

One of key character of system of the present invention is to adopt the surface or the yarn guiding wheel of low friction on each position of the system that carries this yarn.Doing like this is the power of reducing friction as much as possible in order to pass system at this yarn and to move.The reason that this yarn should be carried with minimum friction is that if necessary, this yarn can carry out knitting under low-tension, thereby causes low drafting force.If this yarn is knitting under high-tension, made knitwear can have too big elasticity.In other words, in fact made clothes resemble a waistband, tightly clamp wearer's health.But also can make clothes than desirable weight.

Guarantee that this yarn does not have when carrying that friction is why important to also have Another reason.If tangible friction is arranged, particularly when with low-tension when knitting, because the interruption drawing-off of this yarn on each friction point, this yarn can be knitting in a kind of inhomogeneous and discontinuous mode.Consequently, the horizontal line that the looped pile skew can occur and be commonly referred to crosspiece on the last knitwear.

The Another reason of eliminating friction is this yarn broken yarn that prevents ready-made clothes as much as possible.This yarn can make yarn stress excessive along being coated with suffered excessive friction, so that may rupture in ready-made clothes.

In the specific embodiment shown in Fig. 2,3,4 and 14, have a series of with numeral 29,36,40, the 42 and 44 rotatable yarn guiding wheels that mark.Reinforcement and replacement to this embodiment have been shown among Fig. 5-13.In Fig. 5, the creel assembly illustrates with 111 generally, and comprises that a upper arm 113, is pivotally connected to the underarm 115 and a creel end 123 of arm 113 by a pin assembly 117.As shown in Figure 5, stretch yarn 121 passes 119 operations of the first yarn guiding wheel assembly, and its traffic direction changes one 90 ° of angles there.Guide wheel assembly 119 is installed on the upper arm 113 of creel assembly 111.Stretch yarn 121 continues to run until that one is installed on the interior second yarn guiding wheel assembly of creel end 123, will be described this yarn guiding wheel assembly below.There, the traffic direction of stretch yarn changes 90 ° again,,, depends on the reciprocating traverse of the creel assembly of system perhaps to the right perhaps left.

More carefully note underarm 115 and creel end 123, Fig. 6 and 7 shows yarn 121 operation downwards between a pair of rotating yarn guiding wheel 125.Each yarn guiding wheel is fixed in a corresponding axle 127.As shown in Figure 8, each yarn guiding wheel assembly on creel top comprise steel axle 127, a fixed installation and with this yarn guiding wheel that together rotates 125 and a pair of jewel bearing 129, the yarn guiding wheel 125 preferred 8. acetal resins (Delaware, USA Wilmington E.I.Du Pont Company) of Delrin that adopt, the two ends of this pointed axle place bearing 129.In the embodiment of Fig. 8, a leaf spring 131 separates each jewel bearing and the steel shell 133 of yarn guiding wheel assembly.As a result, bearing 129 is pushed down the steel axle 127 that is embedded in the wheel 125.Yarn 121 just passes wheel 125 certainly and moves, as shown in the figure.

Second embodiment of each yarn guiding wheel assembly 124 is illustrated in Fig. 9.Not bearing to be beared down on one at the tip of axle in this embodiment, but have a helical spring 135 in the yarn guiding wheel assembly 124, be used in an opposite direction the jewel bearing 129 that bears down on one shaft element 127a and 127b with leaf spring.

Obviously, in Fig. 5 generally with the guide wheel assembly shown in 119 preferably according to the embodiment shown in Fig. 8, perhaps in the embodiment manufacturing shown in Fig. 9.

Replace guide wheel or pulley, can adopt fixing polishing pottery or gemstone surface to guide and not clad stretch yarn and/or change its direction and/or angle.One embodiment of quiet jewel thread-carrier is shown among Figure 10-13.The creel end is hollow, and this is illustrated in Figure 10-13.It is a kind of sapphire that jewel ring 219 is preferably, and it is positioned in the creel end 223, as Figure 12 and shown in Figure 13.In order further to reduce contact point, thereby reduce the friction along stretch yarn, the cross section of jewel ring 219 can be as shown in figure 13, for recessed relatively.

Be appreciated that aforementioned static thread-carrier and yarn guiding wheel transmit this yarn and move along it.More particularly, change direction Anywhere, comprise the feeding knitting needle, all need a static low-friction surface, perhaps add a rotatable wheel, so that eliminate friction as much as possible along this yarn at this place at this yarn.

In addition, adopt two creels (is used for hard yarn, and another is used for this yarn), as shown in Figure 3, can eliminate a significant friction point.Generally be to adopt single standard braiding creel, not only carry hard yarn but also carry this yarn.The creel assembly feeds and when knitting eedle was carried, this creel can produce significantly friction between yarn when yarn passes.On the other hand, as shown in Figure 3, adopt independent creel to supply this yarn, eliminated the friction between the yarn fully.And this yarn creel is equipped with independent yarn guiding wheel 40, so that as much as possible friction is reduced to minimum.

As shown in Figure 4,

roller

42 and 44 also are equipped with in the end of the creel of this yarn 18.This yarn is pulled out from roller 40, between

roller

42 and 44, pass then, moving (the left-hand right side) when process medium velocity change from yarn feeding direction forward to stop with convenient creel 11, and, on the direction of yarn feeding backward, move (a dextrad left side) and when the process medium velocity changes any variation of tension force is reduced to minimum subsequently at the looped pile turning point.

For the present invention is described, now lift an example.8. Spandex type 146-C (Delaware, USA Wilmington E.I.Du Pont Company) and four 300 dawn continuous artificial silk footpath weaving yarns go out the bodkin bullet clothing knitted fabric of improved rib collar/jersey structure with Lycra.Figure 15 is a curve map, shows respectively along these knitwear 92, and along each locational this yarn pulled out condition of a path of the fabric of making by prior art 90, to compare.Except the improvement of low friction as described herein, knitting machine is identical in the setting of others.This curve has illustrated that clearly knitwear of the present invention compare with the knitwear according to prior art, stretches to be reduced and roughly to be uniform.

In an alternative embodiment, second support 16, this yarn yarn feeder 14 and this yarn package 19 can place the opposite side of knitting machine 10, so that carry second this yarn to knitting machine, replace with the looped pile line that this yarn wove that is provided by first support.This need adopt an additional creel piece (not shown) for second this yarn 18.

During running, the creel piece that makes first this yarn is along the first direction operation of machine, goes out the first looped pile line with knitting.The creel piece of second this yarn is moved in the opposite direction, to weave the second looped pile line.And then making the first creel piece counter motion, the second creel piece also is like this.Like this, this yarn is that a looped pile line connects a looped pile line ground supply in weaving process.Result in the side yarn feeding that replaces is like this, has all been offset by the opposite inhomogeneities in next looped pile line along any residue inhomogeneities that the stretch yarn of each looped pile line stretches.Thereby the difference that makes the cloth edge lengths has been avoided uneven cloth edge lengths basically less than about 7%.

Test result is, when the knitting machine that disposes low friction thread-carrier fed single this yarn and a hard yarn (artificial silk/this yarn), the selvedge of a side relative with this yarn feeding was than near the selvedge on the side of this yarn supply on average long 20% on the fabric.Selvedge length variations coefficient (measured value of irregular amount) average out to 10.0%.When this yarn that substitutes fed in the looped pile line that the both sides of machine replace, discovery was supplied side length or short ± 2% at the natural selvedge ratio of a relative side of this yarn feeding near this yarn.Fabric length variation coefficient from a side to opposite side is 2%.This explanation, a looped pile ground of looped pile alternate supplies stretch yarn is more favourable compared with only using fundamental system.

8. Spandex type 146-C and two 16/2 carded cotton warp thread are also weaved out the bodkin bullet clothing knitted fabric of jersey structure with Lycra.Detect total outward appearance (is benchmark with 1 (bad) to 5 (outstanding) level) of break this yarn number and fabric in each sample.This yarn feeds from a side, and the result is provided in the following table 1.This yarn yarn feeding Unit Weight Spandex yarn outward appearance of table 1 OZ/YD2 of system broken yarn grade does not have yarn feeder 21 26 1 high friction yarn feeder 20 15 2 low friction yarn feeders 15 05

During without yarn feeder, this yarn is derived from the package on the frame plate, and is identical with hard yarn.When adopting a yarn feeder, it is constant that the tension adjustment on the yarn feeder keeps.The fabric per unit area weight that is appreciated that the fabric that is made into when operating thread-carrier under low-tension is low, and broken yarn is less.

In order further to illustrate the present invention, weave single jersey sweater sheet stock of knitting needle fabric with Shima type SES122FF (island essence) flat machine, make technological side up.Except indicating the place especially, the speed of machine is 0.75 meter per second, and the yarn on each pin is stretched as 9.91 millimeters.Adopt triangular web knitting (each looped pile line).When this yarn during from the feeding of a side of machine, adopt two creels, one is used for this yarn, and another is used for hard yarn.(and, then adopting four creels) when this yarn during alternately from the feeding of the both sides of knitting machine.This yarn is 8. type 146C of (44 dtex) Lycra of single 40 dawn, and hard yarn to be four packages dye 300 black dawn (330 dtex) artificial silk (viscose #5330, the special city method Bel tower of Belgian monarch industrial group).In one-sided yarn feeding process, this yarn is by the right side feeding of yarn feeder from machine, and artificial silk is by the right side feeding of a Tensioning door from machine.This yarn is wrapped in about 3 or 4 circles on the yarn axis of this yarn yarn feeder.

After weaving, under 70 °F with this fabric of detergent washing 16 minutes, and under 135 temperature dry 40 minutes.

With this sheet stock of several path analysis, provide the result who is summarised in the table 2.Recently calculate this yarn content with yarn DENIER number total in the DENIER number of this yarn when drawing-off (in fabric) and the fabric.Calculate fabric weight from the punching of one 3 inch diameters.Uniformity for looped pile line of looped pile line ground estimation drafting force removes artificial silk and this yarn from a looped pile line, and the ratio of the length of measuring artificial silk and the length of this yarn that has relaxed, and calculates the stretching in the whole looped pile line like this.At the top of sweater sheet stock (T), middle (C) and bottom (B) all do like this.In order to estimate along the uniformity of this yarn drafting force of a looped pile line, will be from the bottom (waistband) of sweater sheet stock upwards one section loose fabric of 10cm of 2 inches clamp, and downcut from sheet stock, tear artificial silk and this yarn in the next looped pile line open, and calculate stretching as mentioned above; The bottom from the sweater sheet stock make progress about 5cm a left side (L), in (C), right (R) all do like this.For the uniformity of the whole dimension of determining the sweater sheet stock, measure the length at edge.

Also estimated the sweater sheet stock on a black background, sample number is by hidden.Stringer uniformity, looped pile definition and looped pile uniformity are marked off 1 (bad) to 5 (remarkably) level.Its result's report is shown in table 2.Three unitary part of "-" or "+" expression in each digital back are to be below or above the numeral of being reported on an average.

In knitting process, when this yarn leaves yarn feeder, (Si Tete swings in Germany through a tensometer to make it, good name Ge Yiluo limited company 006,100,061 part) measures the tension force that it stands, and will deliver to an Autoranging100MKZ Tekscope (Tektronix from the signal of this tensometer output, Wilsonville observes in OR).Used tensometer be with the EFS70 Si yarn yarn feeder that usually provides by good name Ge Yiluo limited company on incidental identical instrument.The spike copy prints with a DUP-411II type thermal printer (Chiba, Japan Seiko instrument) from Tekscope.The steady state tension (g) and the negative steady state tension of the maximum at every gram and every gram/dawn of the every gram (g) and the maximum tension at every gram/dawn (gpd), every gram have been measured.Here, " maximum " is meant the maximum tension of this yarn when creel quickens to leave yarn feeder." stable state " is meant the constant-tension roughly that is reached after creel reaches speed and leaves yarn feeder." maximum negative stable state " is meant the poor of " maximum " and " stable state " tension force, and is the inhomogeneity a kind of measurement that is applied to the tension force on this yarn when fabric edge is compared near yarn feeder with other parts." maximum " is big more with the difference of " stable state " tension force, and peak tension was also just big more when creel quickened.Example 1 (comparative example)

This yarn induction system in this example comprises that has been made this yarn yarn feeder of EFS31 type (it is limited that Si Tete good name Ge-Yi Luo share swings in Germany) of revising, and it is revised as the rolling thread-carrier replacement with about 0.5 inch external diameter of the fixing ceramic guide " output eye " in the exit of yarn feeder; The tensometer of yarn feeder is arranged on 0.(this yarn yarn feeder of EFS31 type is similar to the yarn feeder among Fig. 2, but following important difference is arranged: in the position of yarn thread-carrier 18 and guide roller 36.The EFS31 type is equipped with a back dish type tensioner and a groove guide eye respectively.Do not adopt yarn 18 from guide roller 36 directly to the modes of creel assembly, after yarn comes out from the EFS31 type through a fixing ceramic guide " output eye ").In knitting machine, locate to adopt a fixed thread guide to the inlet (position of rolling thread-carrier 29 among Figure 14) of knitting machine at " eye plate ".The second rolling thread-carrier of one 0.5 inch diameters is set at the top of this creel (same position of rolling thread-carrier 40 in Fig. 3), to guide this yarn to turn over about 90 °, run down on the thread-carrier (in the bottom of creel) and knitting needle of creel end; Common fixing steel thread-carrier is positioned at thread-carrier place, creel end.In the porch of leading to yarn feeder, the tension force on the back dish type tensioner is set lowly as far as possible.The tension measurements of this system is:

Maximum, g 5.2

gpd 0.13

Stable state, g 4.0+/-0.8 (+/-20%)

Maximum negative

Stable state, g 1.2

Gpd 0.030 routine IIa and IIb

This yarn induction system in this two example comprises this yarn yarn feeder shown in Figure 2, EFS31 type yarn feeder wherein (for example used in routine I) has been done following change, unload back dish type tensioner, with an overall diameter be 0.33 inch, be installed in roller thread-carrier on the jewel bearing and replace fixed thread guide on the yarn control arm, and remove the eye in fixed thread guide exit fully.The yarn feeder tensometer is set at 0.5.The roller thread-carrier that diameter is about 0.5 inch is set at the eye plate place in knitting machine, and 8. acetal resin guide wheel of one Delrin is set in this yarn creel end.In addition, fixed thread guide on the thread-carrier on the creel end is replaced by two little (overall diameter is 0.045 inch) rollers that are supported on the jewel bearing, for example Fig. 4 to 7 is shown, returns still that this yarn all rides on the roller when this yarn yarn feeder motion thereby creel leaves the motion of this yarn yarn feeder.

In routine IIa, this yarn has been made the EFS31 yarn feeder as above changed by one and has been infeeded from the right side of machine.In routine IIb, this yarn infeeds looped pile alternately by two EFS31 yarn feeders that improved from the both sides of knitting machine.The tension measurements of the yarn feeder of example IIa and IIb is:

Maximum, g 3.4

gpd 0.08

Stable state, g 2.4+/-0.1 (+/-4%)

Maximum negative

Stable state, g 1.0

Gpd 0.025 routine IIIa and IIIb

In routine IIIa and IIIb, this yarn conveyer comprises an EFS70 (good name Ge Yiluo limited company), in order to the EFS31 Si yarn yarn feeder that has replaced improving.(adopt the EFS70 yarn feeder, this yarn is passed down through yarn input eye from a built on stilts bobbin, walk around one and store wireline reel (similar) to the wireline reel 32 among Fig. 2, pass first pair of guiding pulley, by a piezoelectricity tension sensing device, pass at last and be positioned at 8. acetal resin guide wheel of the Delrin yarn feeder exit, that have jewel bearing.Storing on the wireline reel, yarn leaves to be about 90 ° of angles with yarn to the path of wireline reel motion then around several circles of wireline reel).The yarn feeder tensometer is set at 4.Identical among the other parts of system and the routine IIa.In routine IIIa, machine carries out knitting with the speed of 0.75 meter per second, and in routine IIIb, the speed of machine is 1.1 meter per seconds.The measured value of the tension force of the yarn feeder of example IIIa and IIIb is:

Maximum, g 2.5

gpd 0.06

Stable state, g 2.1+/-0.1 (+/-5%)

Maximum negative

Stable state, g 0.4

gpd 0.010

Table 2

Each is 7 according to all according to three measured values of each example in three examples.Example I IIa IIb IIIa IIIb Si yarn content, wt% 1.5% 1.9% 1.9% 1.9% 1.9% fabric weights, oz/yd2 17 12 12 11 12 overall withs stretch (at the top, centre, bottom measure)

Average 2.0 1.6 1.6 1.6 1.7

Average amplitude, the bottom is compared than the centre in the top

1.99- 1.61- 1.63- 1.63- 1.65-

2.06 1.62 1.66 1.66 1.67

Maximum poor

Simple sample 10% 8% 4% 4% 2% left sides/in/the right average % that stretches is poor, a right side/left side 12% 5% 0%-1-1% edge length, difference average % in a left side/right side is poor, a left side/right side 10% 10%-1% 2% 2%

Amplitude 9-12% 8-12%-2--1% 0-3% 1-3% mean difference, L-R, inch 1.9 " 2.7 "-0.2 " 0.4 " 0.6 " homogeneity to the eye grade 1 3-3-4 4+

No matter in a looped pile line still from a looped pile line to another looped pile line, the fabric among routine IIa, IIb, IIIa and the IIIb all stretching of this yarn of fabric among the ratio I is little, and evenly.Edge length is also more even in preference IIb, IIIa and IIIb.The uniformity of fabric of the present invention obviously is better than comparative example.

Figure 16 is the view according to the technical back of the woven a slice fabric of the present invention.As Figure 16, hard yarn 55 and stretch yarn 18 are woven together, and form a knitted structure, and hard yarn can be seen from technological side, and this yarn can only be seen from technical back.In this example, fabric has the two parts 67 and 69 that limited by looped pile line 68 and 70 respectively, the looped pile size difference of each several part.

Be appreciated that knitting needle fabric shown in Figure 16 has some needle loops 71 and sinker loop 73, their size and dimension is uniform substantially in each fabric portions.The vertical stringer of looped pile and the outward appearance of horizontal line also are the same basically.

In succession line and in two parts fabric 67 and 69 stretching of this yarn be uniform substantially.The result is that the fabric in two parts has basic (striding across A-A and B-B) and the retraction of upholding uniformly in all directions.

Preferably being stretching between 11 and 4.5 of this yarn is more preferably between 1.2 to 2.5.The DENIER number of this yarn should be between 10 to 150, more preferably between 10 to 70.

The product of producing according to method of the present invention will not clad yarn or other stretch yarn and hard yarn formation one integral body in the knitted structure of braiding, so that produce uniform knitting needle fabric on a kind of size.The distortion minimum of this fabric, and the dimensional uniformity between fabric and the fabric has increased.

According to prior art, the tension force on this yarn is along with the length of knitting looped pile and size and increase.As a result, the stretching of this yarn also increases.In contrast, in fabric of the present invention,, stretch and always remain on a predetermined degree substantially constant regardless of the size of looped pile.This is because method of the present invention can make the transporting velocity of this yarn according to the speed of machine and looped pile size that weaves or the accurate variation of structure generation.So just can provide this yarn with constant elongation or stretching.

And, because stretching, this yarn keeps constant substantially, and the haptic effect on the fabric is uniform basically---and this yarn will make the fabric looped pile extrapolated from the uniform plane ground of fabric, thus hard yarn fiber uniformly extension.Therefore, the whole surface of fabric keeps a kind of soft basically sensation uniformly.By the description of front, the previous purpose that proposes of the present invention is clearly, and can be achieved effectively.Change owing under the prerequisite that does not deviate from the spirit and scope of the present invention, can make some, comprise in the superincumbent description, also all the elements shown in the drawings all should be interpreted as illustrative and nonrestrictive the said goods and system.

Should also be understood that following claims have covered general and concrete feature described in the invention, to all statements of scope of the present invention, as a kind of language, can be believed to comprise within the scope of claims.

Claims

1. knitting needle fabric, it comprises that at least one hard yarn and at least one do not clad stretch yarn, these yarns are woven into a knitting needle fabric together, it is characterized in that: stretch yarn has uniform stretching along each looped pile line of fabric basically.

2. knitting needle fabric as claimed in claim 1 is characterized in that: stretch yarn has basic stretching uniformly in looped pile line in succession.

3. knitting needle fabric as claimed in claim 2 is characterized in that: described stretching is greatly between 1.1 to 4.5.

4. knitting needle fabric as claimed in claim 3 is characterized in that: described stretching is greatly between 1.2 to 2.5.

5. knitting needle fabric as claimed in claim 1 is characterized in that: the DENIER number of stretch yarn is greatly between 10 to 150.

6. knitting needle fabric as claimed in claim 5 is characterized in that: the DENIER number of stretch yarn is greatly between 10 to 70.

7. knitting needle fabric as claimed in claim 1 is characterized in that: this fabric is a flat fabric.

8. knitting needle fabric as claimed in claim 1 is characterized in that: this fabric is a circular knitted fabric.

9. knitting needle fabric as claimed in claim 1 is characterized in that: this does not clad stretch yarn for not cladding this yarn.

10. knitting needle fabric as claimed in claim 1 is characterized in that: the edge length difference of fabric is less than about 7%.

11. a method of weaving a knitting needle fabric comprises:

12. method as claimed in claim 11 is characterized in that: in described maintenance step, average total departing from of steady state tension of the tension variation of the stretch yarn in the stable state knitting process and described yarn is not more than 10%.

13. method as claimed in claim 11 is characterized in that: this maintenance step comprises:

The transient change of stretch yarn demand in the described knitting step of sensing; And, when the variation of yarn demand in stretch yarn tension force size is desired in response to knitting process and the variation that takes place have departed from described desirable tension force size, control the variation of described stretch yarn tension force size selectively in response to described sensing step.

14. method as claimed in claim 11 is characterized in that: described selection step is included in the size that changes described desired tension in the described knitting process.

15. method as claimed in claim 11 is characterized in that: knitting step comprises two kinds of yarns is woven into an open width knit goods together.

16. method as claimed in claim 11 is characterized in that: knitting step comprises two kinds of yarns is woven into a round pin woven fabric together.

17. method as claimed in claim 11 is characterized in that: supplying step comprises that will not cladding stretch yarn from relative direction carries to the common location of the looped pile line that replaces.

18. a system is used for not being woven together and constructing the knitting needle fabric by at least one hard yarn and at least one being cladded stretch yarn, comprising:

Be used at least one stretch yarn being knitted with at least one hard yarn and be in the same place, so that make the device of a knitting needle fabric with a kind of braiding manufacturing process;

19. system as claimed in claim 18 is characterized in that: this holding device remains on 10% the degree that is not more than that departs from average total steady state tension of described yarn with the tension force of the stretch yarn in the stable state knitting process.

20. system as claimed in claim 18 is characterized in that: this holding device comprises:

Be used for the device of the described knitting device of sensing to the variation of the instantaneous demand of stretch yarn;

In response to described sensing device, be used for when variation that the tension force size of described stretch yarn desires to take place in response to the variation of yarn demand has departed from described desirable tension force size, controlling the device of any variation of described stretch yarn tension force size.

21. system as claimed in claim 20 is characterized in that: sensing device comprises a control arm, and it can move between the primary importance and the second place in response to the variation of described knitting device to the demand of described stretch yarn.

22. system as claimed in claim 20 is characterized in that: this sensing device comprises a strain-ga(u)ge installation.

23. system as claimed in claim 20, it is characterized in that: this holding device also comprises the yarn guiding wheel device, when stretch yarn was sent on the described knitting device, this yarn guiding wheel device can be used to transmit described yarn, and this device is set at stretch yarn and obviously changes on the position of direction.

24. system as claimed in claim 23 is characterized in that: described yarn guiding wheel device comprises the yarn guiding wheel that is supported on the jewel bearing.

25. system as claimed in claim 20, it is characterized in that: this holding device also comprises the feed carrier that guides described yarn when described stretch yarn when described knitting device is carried, described feed carrier comprises a low-friction surface, and is set at described stretch yarn and obviously changes on the position of direction.

26. system as claimed in claim 25 is characterized in that: this low-friction surface comprises a sapphire.

27. system as claimed in claim 18 is characterized in that: described knitting device comprises a flat machine, and it comprises and is used for optionally moving so that the conveyer of knit goods between side of described knitting machine and opposite side.

28. system as claimed in claim 18 is characterized in that: described knitting device is a circular knitter.

29. system as claimed in claim 18 is characterized in that: described stretch yarn transport comprises the device that is used for feeding to described knitting device according to the looped pile line that replaces from the Yarn supply device of the both sides that are positioned at described knitting machine described stretch yarn.