DE2235343C3 - Method and device for the continuous fixing of a woolen fiber band - Google Patents

Description

the. are driven at a greater rotational speed.

»Ic invention relates to a method and Continuous fixation device

s wool sliver in the manufacture of a

a stress-elongation curve was obtained, which was recorded on a card. the IJ icrope (C.S.) stretchability of this Ti.stsi.ucks were calculated from the values obtained from the map or diagram, namely according to the following equation:

_{cs =} length of the test piece at tension T ₂ Jg) - length of the test piece at tension Γ, (g)

Length of the test piece at Spannuni: T ₁ ("uT"""'"" ~ """"

100%

wherein:

^{T2 (g)} ~ d / 9000

T ₁ Ig) = 1 / 10T ₂ Ig) 7 · KT ³ (g) SXS14 · 10 "- 'Ig)

α means the weight of the test piece per unit length (g / m);

d denotes the average fineness (denier) of the fibers forming the sliver;

L the distance between the grippers before the start of the test and

/ means the mean length (cm) of the fibers forming the sliver.

Table 1 shows the crimp stretchability (• / o) of a top of wool as obtained by the Method according to Japanese Patent Application 42-4301 was obtained as compared with the top of the wool, which does not have any fixing treatment at all for removing the pucker has been subjected to the fibers.

Table 1

Fibers in relative storage for 4 hours in a dry atmosphere atmosphere of 80 ° / n ver humidity kept at 25 ° C

Combed wool, obtained 2.11 3.21

out of an ordinary

proceedings

Combed wool, obtained 1.54 3.15

after fixing
the procedure of
Japanese Patent Application 42-4301

As can be seen from the aforementioned Table 1, the top is as it is according to the method of the Japanese patent application is obtained, such that the crimps of the fiber in certain Measure at the stage immediately after the fixation treatment are smoothed or straightened. However, such a top has hardly any difference to the top which was not subjected to this fixing treatment, if this top is stored in a highly humid atmosphere. so that it is difficult to find such a top as to designate one that continuously during the entire Kammgamspinnvorgangs a has stable curl loss. This method described by the Japanese patent application

So ο does not provide an effective fixation effect.

It is also known that in principle the crimps of wool fibers either by heating of a woolen fiber band for a certain period of time in a stretched state when wet

Sliver can be removed or by first moistening the fibers with water, it is then heated and then dried under tension. A tape fleece is formed for this purpose first runs through a washing machine and then through a dryer, using press units the tension of the webbing can be regulated as required.

In this case, too, no permanent fixation can be achieved, since the voltage that can be applied, as in

is too low in the other cases because of the inevitable delay. A prevention of the Warpage would mean that a number of press works would have to be used, their respective Distance is smaller than the mean thread length. A single pair of presses would not be enough then the necessary residence time of the wool fibers in the tensioned state would be too short.

The object of the invention is to provide a method and a device for fixing wool fiber tape to create, so that the crimps removed in this way in the fibers of the sliver itself stress-free state cannot be recovered during the entire spinning process and that they are recovered only by subjecting the fibers to a crimp recovery treatment which is made after the fibers have been spun into a yarn or after the yarn has been processed into a textile material. The procedure should be like this be designed so that there is both the necessary Vetweilzeit without extending the usual devices of the woolen fiber tape on the device as well as the required tension.

This task is solved by the

Wool fiber tape heated under tension in a damp state by steaming and thereby giving it a False twist is given by first twisting the sliver and then untwisting it and then dries under low tension at a temperature lower than the damping temperature is, the untwisting of the sliver is accomplished by the fact that the length of the untwisted Sliver section smaller than the mean length of the individual fibers forming the sliver

stop. According to the invention, the heating, warping and stretching are combined with one another in such a way that the mutual slip of the individual fibers is overcome a twisting section prevents further exposure to heat and tension for

the stretching takes place. The actual warpage and stretching under tension can be done in this way be separated from each other by a false twist, so that optimal measures for the

Fixation of the unruffed Zusuuuk are possible. With regard to the twisting, the sliver can be conveyed under a relatively high tension which, under the action of heat, ensure optimal elimination of puckers.

Since the twisting stretch can prevent warping during the fixing section, the invention offers the possibility of clarifying a device for carrying out the method in this way and for lengthening the fibers. In Fig. I, A represents the state of wool fibers. which are kept at a temperature of 25 C and a humidity of 15 "". Ii represents the state of those wool fibers which are kept at a temperature of KK) 'C and a relative humidity of 22 "ti. This graphic representation shows that the fibers B are drawn with tension for the same elongation

Make this device practical with two io that is half or less of that.

Sets of clamping rollers at the entry and exit of the processing zone. This device is characterized according to the invention by a steam treatment chamber through which the woolen fiber tape runs, on the outlet side there is a heating and false twist chamber connected to the inlet and the exit side of the woolen thread tape has a set of pinch rollers and a false twist device possesses, and to which a drying chamber is connected, which has a cylindrical drying roller device has. Further developments of the invention are the subject of subclaims.

The invention will be explained in more detail in the following Drawings explained in more detail.

Fig. 1 is a graph showing the voltage-elongation curves for wool fibers clarifies:

Fig. 2 is a diagram showing the relationship between the heating time and the crimp stretchability as the effect of the fixation clarified:

Fig. 3 is a diagram showing the changes in Clarifies the condition of a wool fiber, which shows this wool fiber in the fixation process;

F i g. 4 is a schematic representation of an example of an apparatus used to make the wool fibers A necessary. It is therefore extremely effective for the uniform and soft smoothing of the crimps if the fibers are given an amount of moisture in the order of magnitude of 20 to 30 ° / u and they are heated to a temperature of 70 to IK) C before drawing.

Subsequently, the dampened wool fiber band becomes that formed by a false twist device Zwirnzonc promoted. In this zone the fibers contained in the sliver become progressive Twist the sliver together more tightly. It therefore runs the sliver under tension through a heated one Atmosphere of this zone, during which period the fibers are obstructed, so thatL> they do not slip and are not moved from their original position in the sliver, so they are not unequal or received uneven warpage. During this passage of the sliver, the crimps that are present are removed the wool fiber is smoothed so that the fibers are made substantially straight. the Wool fibers are thus heat-set in this straight shape.

The relationship between the period of

warming the method according to the invention into practice and the fixing effect is with reference to FIG add to;

Fig. 5 is a diagrammatic representation of a False twist device of the device according to FIG. 4:

F i g. 6 is a sectional view through the device of FIG. 4;

Fig. 7 is a perspective view showing the Behavior of the wool sliver shows when the latter is through a set of pinch rollers of the device according to FIG. 4 is detected.

The method according to the invention is characterized by the sequence of the following three steps: (1) a woolen fiber band, to which a suitable amount of moisture has been added, is heated; (2) The resulting sliver is given the aforementioned crimp stretchability as explained in F i 2. Z. In this diagram, the curves of wool fibers which have been subjected to the heat treatment for different periods of time are shown for comparison. Curve C represents the crimp stretchability with respect to the heating time of the woolen fibers. immediately after the fibers have been fixed by the drying step. D represents the same relationship at the end of 4 hours during which the fibers fixed by the drying step were in high temperature and humidity atmospheres of 25 ° C. and 80 ° C., respectively. β relative humidity was left in the relaxed state -n. E represents the same

False twist and warpage at the same time, namely for a 5 ° relationship at the end of one minute, during which a certain period of time within a heated, rather time, the sliver obtained from C in a normal atmosphere; (3) This sliver is dried under pressure in a steam-saturated atmosphere under low tension at a temperature which is left in a relaxed state. Which is lower in this one than in the previous step. Type of wool fibers treated according to C, D and E.

In step (1), a suitable humidity 55, a false twist of 25 rev / m and a distortion amount of the wool fiber tape is given, and it is 30% compared to the original length of the wool fibers "" ~ "" ~~ '~ "'' From these data it can be seen that

it for achieving an effective fixation effect it is necessary that the heating time be set at least 0.5 minutes. Will the Conveying speed of the wool fiber tape in terms of production productivity to 6 m / min determined, the length of the twisting zone of the device for performing the fixation must be

as well as the fibers themselves in a state 65 must be at least 3 m long. However, it is intended that £ in which they in the subsequent warping, the fibers from a mutual slip inside step can be easily stretched. The Fig. 1 half of the sliver are prevented when sif shows curves showing the relationship between the chip gap between two sets of pinch roller ^! passed

damp sliver heated at the same time by the sliver in a relatively relaxed state prior to being given a false twist and a draft holds. By either subjecting the sliver to a steam treatment or steaming or by if the moist sliver is heated, the wool fibers of the sliver swell to a sufficient extent and thereby become plastic, so that one

be lied without the fibers being twisted in any way, the distance between these two sets of pinch rollers must be less than the average length of the fibers. This in turn leads to the need for a large number of valzenes. This allows the device under construction is very CompliCat /, so that it is ieit iehr and large in size difficult. to realize them in practice.

The aforementioned difficulty can be effectively eliminated if, in accordance with the method according to the invention, the wool fibers of a sliver are warmed and warped while they are given a false twist; In order to obtain a resistance in the fibers against the forces causing the fibers to slip against one another within the sliver, the number of turns or twists per meter of false twist must be set at 15 to 40 rpm. * °

Subsequent to the aforementioned heating and drawing step, the sliver runs to the rotating section of the false twist device, then to the untwisting zone and then to the pinch rollers and is then released from them in an untwisted state. This untwisting zone has a length which is smaller than the mean length of the wool fibers of the sliver. wherein the untwisting takes place under tension and heat, around the previous twist which the fibers have received together with the crimp smoothing in the twisting zone. to be eliminated in such a way that the curl smoothing remains lixed only in the fibers.

Subsequently and in succession to the aforementioned step, the sliver is at a Temperature dried lower than that of steam is in the previous zone. and doing so under a condition that the ripples the fibers of the sliver which have been smoothed do not return, d. H. so under one Tension of about 0.19 d or less.

The F i g. 3 shows the state of a wool fiber shown for each treatment state. In this illustration, F represents the condition of the fiber. if it is only made moist and heated. G represents the state in which the fiber obtained in F has been warped. H represents the state in which the drawn fiber has been dried at the aforesaid temperature under a tension substantially equal to the drawing tension. Fig. 7 shows the wool fiber which has been dried at said temperature under such a weak tension that it does not cause recovery of the crimp once lost in the fiber. The inventive method ichließt also includes the step of a sufficient Rückkräuselung of the wool fibers of a sliver by drying at a temperature, which is lower than the / is the previous damper section under the condition according to the contrary, in the Troclaiungsschritt under a high voltage, as was indicated at H, carried out, there are the following disadvantages.

In order for the sliver to remain under a tension during the drying step which is equal to that applied during the drawing, it is necessary to carry out this drying step in such a way that the sliver is kept under such a tension that there is no slippage Caused fibers against each other within the sliver, as is the case with warping. However, if the false twist step is provided during this drying step, this means that the sliver is undesirably given a further twist, even if the mutual slipping of fibers can be prevented. This drying step must therefore be carried out under such a weak tension that the curl, once lost, does not appear again. For this reason, it is desirable to carry out this step in such a manner as is done in a known cylindrical dryer. If the drying step is carried out under a tension equal to that. As it is expended during stretching, the size of the actual elongation to which the wool fibers are set per se will increase (corresponding to the length S according to FIG. 3). Therefore, the fibers are later subjected to a crimp recovery treatment in a final step after the fibers are spun into a yarn or after the spun yarn is made into a textile material. it can happen that, with the recovery of the crimp once lost, the size of the elongation (the length S in FIG. 3 is meant). which the wool fibers developed themselves, is again shortened as a result of shrinking fibers. Such a wool fiber shows after spinning to a yarn a handle which differs from that of the known worsted yarn, so that it is impossible to obtain the desired fixation of the wool fiber tape according to the invention.

The invention is concerned with the continuous fixing of woolen fiber tapes by clever means Exploiting the behavior of woolen fiber tapes. The feature of the invention is that it is effective Combination of treatments in a series of steps, which are mainly temporary induce a frizz removal fixation on the wool fiber. Especially the following will be four advantages achieved by the method according to the invention:

i. If the humidifying and heating step of the wool fibers is carried out in the relaxed state of the fibers, satisfactory penetration of heat and moisture into the wool fiber tape is ensured, so that uniform heating of the fiber in the fiber tape is achieved;

ii. The wool fiber band, which has been subjected to the previous step, is then passed through a nipping point in the second step and comes to a false twist device and heating zone, where the fiber band is intensely twisted and twisted while the fibers are held relatively to one another in the fiber band . With such a warping, the correct moistening and heating, as it was given to the sliver in the previous first steaming step, has the effect of bringing the fibers into the state in which their crimps are sufficiently ready for simple straightening, so that this effectively smooths out ripples;

iii. when Entewimen the sliver in Entzwii

609 618/233

tion section in a heated and tensioned lower rollers 4 ″ and 4c, which in a suitable

State, the set twisting of the WoIl spacing can be arranged from one another, as well as off

fiber tape, which in the previous twisting a top roller 4 b, which is above the two

and heat treatment has been given, lower rollers at a point between the two bsfin-

be removed completely in such a way, 5 det. The top roller Ab is moved with the help of a suitable

that only the twisting of the sliver with th pressure source (not shown), e.g. with the help of a

Except for the puckering unremoving fixation on air pressure cylinder pushed down to one

is lifted; Set of pinch rollers 4 for the wool sliver too

iv. in the subsequent drying step, which is formed at. Each of these three rollers 4a, 4b and 4c becomes

tuner temperature is executed, which is lower than io with the same circumferential speed inevitably

tlie of the preceding steam is, the in- tern- turns.

»Ive, the shrinkage property inherent in wool fibers so According to the F i g. 5 and 6 has the false twist controlled that the sliver is dried and a hollow cylinder 61 is rotated in the we- device 6, which is inevitably caused by this lower temperature, as well as a ring 62, which is quenched in circumferential weak tension, so ₁₅ in this direction Cylinder 61 on a notch 61a «just let the tendency of recuperation that sits, which is located in this circumference. The woolen ripple is suppressed. The sliver 1, which is fed through the hollow cylinder 6J (which is not caused by stretching the wool fibers, but is guided) becomes the outside of this notch 61a - only the crimp removal fixation of the ring 62 and then again are knitted into the hollow. n cylinder 61 passed around the sliver 1 a

Through these four successive treatments to give false twist. In FIG. 5, this denotes

Ien it is possible to achieve the aforementioned aims of the reference numeral 63 a mounting of a support element

to achieve. for rotating the hollow cylinder 61 around the

In the following is the invention in detail the axis through the Wandet direction of the fiber sub Referring to one embodiment in more detail, 25 bands 1 is represented. The reference number 64 • Skinning. denotes a sprocket for the forced rotation of the

In Fi g. 4, reference numeral 1 denotes a hollow cylinder 61. This rotating force is provided by a

Wool fiber tape. The reference numerals 2 and 2 'denote a suitable drive source, not shown, supplied,

draw conveyor rollers for the introduction of the wool. The second set of pinch rollers 7 according to FIG. 4 loading

fiber sliver 1 in a steam treatment chamber 5 30 consists of two lower rollers Ta and 7c in one

Wit a suitable speed. The reference-appropriate distance from each other are arranged,

le.chen 3a and 3b as well as 3c and 3d repräventie- and from an upper roller 76. which extends over this

Jen e.n pair of sliver inlet members and two lower rollers in one place wipe them

raar of sliver outlet belts the steam treatment is located, as is the case with the first set of clamping

treatment chamber 5 Each of these inlet and outlet rollers 4 is the case. The top roller Tb is with

members, st constructed in such a way that there is a kind of cooperative help from a suitable pressure unit, not shown

Nozzle forms so that the gap between the upper and _device . _z . _B. an air cylinder, pushed down

• kidney inlet member progressively m traveling direction _around a pair of clamping elements for the sliver

of the wool sliver 1 decreases to form the steaming. Each of these three rollers Ta. Tb and

Kngskammer S is continuously saturated with 40 7 c is at the same peripheral speed

Steam is supplied under normal pressure and twisted with a die

• Filled with steam. The one in this chamber S contained rw _7ϊμ .; Ι «c", _νΛ , - ■ j "".

• A steam partly goes through the narrow open pinch rollers 7 * t arranged in this way

. »Ng between the inlet members 3a and 36 to the ^% e tagSe ^ S ^ S

Outside of chamber 5, while the remaining 45 first S =, Iv, ^ei5e f

Steam through the narrow gap wipe the out Se _n these ^ T ^m ^. ^{a! zen 4 1}

do we break down 3c and 3d into the adjacent heating 5s VeSoS? η ι t ^

The flow and wrong-way chamber 5 'flows. These Er- Sen dem Ko _n , '^ "ΐΐ ^ TT

Warming and wrong-way chamber S 'is so ause-bandIlS _n »? ™ ΐΚ I ^P *". F ™

that she puts the woolen sliver 1, which is in the steam ₅ o nunkVp d £ ™? ϊΐ '1 T "J

treatment chamber S has been warmed up in the deWan ^ ™ η £ ^Kle ™ l ™ * «t 7,

substantially the same temperature as in the Chamber KlerlnunkT IJ "*". * "" * ^"the ^ f

mer 5 can hold. In this warming and Γ £ ς? t, ^{Cm 2} T ^, clamping point

talschdrallkammer 5 'is a steam pipe P vonse- tZ £? u T _aR ^{sentence, "Klem} ^ lzen 7 smd jeweüs se

see so that the heating zone by using ₅₅ ΪΓίίί ^ ΖΪ * T w,? " ¹ ^" fTlW

this steam pipe is formed, which as heat 'ne «Ι ^ ΓθΟ hl 7O ^W ° ^{llfaSem 5} ^ ^ t %

"Hiont ^to 'O mm to be believed

^q f "the one defined by the heating chamber 5 '- Ltantst ^^ ^ ^^

In the tenth heating zone there is a first set of Se F ^ l ^. ³ ^

Pinch rollers 4 and a false twist device 6, 60 £ £ ί Ϊ «" twists wmL

both in the direction of travel of the woolen fiber band 1 Sat ^ ΚΙμΙΖΖ ^ ΖΤΤΎ ^ Τ ^ Sr

are arranged. Between this heat treatment- ^ S ^ πΓγΓΪ t , ^C "Ϊ ^T ^ % ΖΤΪI

luiigs- and false twist chamber 5 'and this un- ^ ieTeiU? m τ ^ "^ L **' ^{8 <} \ *

mitSlbar adjacent drying chamber 9 is located Se rictaacZS- """ ¹ T ^ -

det is a second set of pinch rollers 7, which the er- 6 ₅ f _s f ϊ £ β 5 ^ 05 Τ ™ * '* T,

warming and wrong-way chamber 5 'and the dry SÄSf ASAT ^ % £%
9 d bd

tion chamber 9 connects with each other. _{whose under} ^ ₀ , _d ^l ZkkzS

The first set of pinch rollers 4 consists of two roller rollers Zaer fnA eln ^ U

rotated progressively in Wandcrriclilung des Wool sliver 1 increases. When the sliver 1 runs around these rollers, the sliver is with them drawn a progressively increasing, but suitable draft ratio, so that the sliver can be dried under a relatively small tension.

The drying chamber 9 is also constructed so that in this chamber 9 drying air is introduced, which has a temperature which is not higher and preferably is even lower than the temperature of the steam in the preceding chamber 5 '. That imports the air is passed through a dry air inlet 10 provided at an upper end portion of the chamber 9 is, wherein the air is passed through an air outlet 11 to the outside of the chamber, the opposite lower end of the chamber 9 is provided.

Between this drying chamber 9 and the heating and false twist chamber 5 'there is a Gap 12. Warm air is blown through this gap 12 in order to have the effect of an air curtain this will induce heated air and prevent the steam from entering the space inside the Heating and false twist chamber 5 'fills, penetrates into the adjacent drying chamber 9. In the In Fig. 4, reference numerals 13 and 13 'denote Pair of delivery rollers for the transfer of the already fixed, delivered from the drying chamber 9 Woolen fiber band to the next step or to a suitable receiving device, e.g. B. one Jug.

One embodiment of the invention by which the method of the invention is carried out is the previous arrangement. It will now be explained in which way the wool fibers of the sliver be temporarily fixed.

A woolen fiber band 1 to be fixed is introduced into the steam treatment chamber 5 via the trolleys 2 and 2 '. Using the steam pressure (which is on the order of 0.05 to 0.1 kg / cm ^s gauge pressure), the steam can pass under pressure from the space between the inlet members and outlet members 3 α and 3 b , so that the in the Sliver 1 contained air is driven out of this space with the outflowing steam stream. Due to the special arrangement of these members 3 a and 3 b to form a gap which narrows progressively as it extends into the steam treatment chamber 5, the air expulsion effect is increased all the more. This makes it possible to maintain a stable, constant damping state without air entering the wool fiber band 1 located in the steam treatment chamber 5 and into this chamber 5 itself. In this way, the temperature of the wool fiber tape is raised to the temperature inside the steam treatment chamber (about 100 ^° C.). At the same time, moisture is absorbed by the wool fibers of the sliver with progressive condensation of the steam. According to the calculation given above, the moisture content of the sliver assumes the following values. It is assumed that the wool fibers had a moisture content of 15% prior to their introduction into the device. If these wool fibers have a specific heat of C - 0.414 Kcal / kg ° C and if the saturated humidity at normal pressure has an enthalpy <"'- ■■■ 100.04 Kcal / kg and if, furthermore, the saturated steam under normal pressure, whose degree of dryness is 0.98, has an enthalpy of / " - 633.80 Kcal" kg and when finally the temperature of the wool fibers before steaming is 20 C, the moisture content of the sliver is as follows:

(100-2O) ¹¹ C • c Kcal / kg "C

(V- f) Kcal / kg
80 C-0.414Kcal / kg ° C

633.80-100.04 Kcal / kg

100

100

= 0.0614

The total calculated moisture content is then 21.14 Ω ^; o. Actual measurement, however, gives a value of 22 "0. A moisture level is therefore obtained that is necessary and also sufficient for fixing.

ao is sufficient. By removing the sliver before warping in the relaxed state of the fibers, this humidification and heat treatment is sufficient exposing, it is possible to achieve rapid release of the tension on the sliver has been given prior to introduction into the approved procedure. This treatment has therefore a good effect for the following steps.

The sliver that has thus been exposed to an increase in temperature and that with moisture is filled. is then nipped to some extent by the first nip roller unit or pressed. Because the rollers of this unit are inevitably driven at the same peripheral speed there is no shifting or similar uneven displacement of the fibers against each other, so that the progressively fed sliver is gripped and pressed softly and continuously. The amount of the sliver that is located in the drafting section is made by the twisting device in the false twisting device 6 twisted. If the sliver is conveyed under normal and constant condition, the sliver is always twisted with a uniform pitch. This is achieved by that having regard to the frictional resistance exerted by the ring 62 which is part of the Sliver should give a contact angle, which is in the false twist section 6, which is part of the Sliver that has not yet reached ring 62, counterclockwise with respect to the direction of travel of the sliver is twisted when the hollow cylinder 61 in the direction of, for example, the Arrow Γ in F i g. 6 is rotated.

During this process, a length of fresh sliver is obtained from the first set of pinch rollers 4 that has never been twisted at all. At the same time, sliver that is already twisted moves past the ring 62 for a length corresponding to the length of the freshly fed sliver.

The sliver 1 that has passed the ring 62 is completely untwisted. As long as the sliver 1 with constant speed is fed and as long as the hollow cylinder 61 in the Faischdralleinrichtung 6 is rotated at a constant speed, the number of turns remains that the sliver has been given between the first set of pinch rollers 4 and the ring 62, constant.

• 14

The temperature of the previous treatments is so that under stable conditions

serbanri 1, which is fixed between the first set of pinch rollers which then contain fibers. Be ₁ dem

zen 4 and the ring 62 has been warped, both the

State of twist with constant pitch. Sliver as well as the individual items contained

There is therefore no 5 fibers between the fibers in the sliver e.ne very high amount of provisional fixation

Slip on if the sliver during the twisting, which remains stable and unchangeable if that

Pulling is pulled. In this way it is possible to expose the sliver to a highly humid atmosphere

continuous drawing of the sliver is carried out, this in particular during the whole

lead, which is formed from a number of staple fibers- False twist process of the FaI This method

det is. thus eliminating the need for picking up without causing uneven distortion and breakage of the io

Sliver occurs. A desired draft ratio of the sliver on a spool in the tensioned

nis can be obtained by placing in a suitable, in order thereby to the crimps of the fibers

neten extent the circumferential speed of the two-pulling and thus tensioning the fibers, as it is with the

th set of pinch rollers 7 compared to that of the prior art is the case. One relies on

first set of pinch rollers 4 increased. A desirable 15 the method according to the invention, it is without

The warpage ratio is 10 to 40%. At this difficulty possible, the sliver in a can

The warping point has to accommodate the condition of the wool fibers. In addition, the inventive

from the extension area / to post-extension procedure, the omission of the step in which

area changed. It is therefore the fibers of the fiber - a bobbin made of sliver - subject to aging.

bands brought into a state in which they pull enough 20.

can be extended. In the aforementioned embodiment, the core has been uniformly elongated. Up to the stage, sliver during the run from the first nip after the sliver 1 is sent the ring 62 in the false roller unit 4 to the second nip roller unit 6 twisting device 6 until it arrives at the nip by saturated steam. If the fiber point P ″ has passed, the fiber sliver 1 is in the sliver sent through an atmosphere that is not twisted. Also on the second set of tape in a substantially the same state as pinch rollers 7 is the sliver 1 in which can hold in the previous step. a state of untwistedness. With regard to where the sliver has a suitable humidity, however, that the distance between P _x and P ₂ and quantity has been impregnated and kept at an elevated temperature between any two pinch rolls of the second 30 by the steaming. Set of pinch rollers 7 with a value of 60 to 70 mm can then have a substantially uniform fixation in the highest case, never occurs slip between the ring effect. There should also be the fibers in the sliver 1 on. As previously stated, the number of turns or rotations that the fiber tape received, the respective rollers of the second sliver received during stretching, are selected so that the set of pinch rollers 7 with the same circumferential speed is inevitably rotated. This results in, with the running speed at the time also not being an unequal shift between the point of warping and the circumferential speed of fibers in the sliver, as mentioned, so that the false twisting machine elements are taken into account. It is necessary for the sliver to be progressively soft and continuous, the correct number of turns to be detected and guided through the nip. When choosing 40 or twists of twisting that does not affect this part of the treatment, the fiber slippage of the fibers with respect to each other is tied 1, which is now in the untwisted state, the dimension of the wool fiber ribbon and in a tensioned state brought. At the time, the applied draft ratio is calculated to trap point at which the sliver is twisted and warped. It would therefore be very effective to select the number of the fibers of this sliver of weird twists in such a way that the slope is subject to the whip-free fixation. At the same time, the fertilizer is less than the mean length of the fibers for twisting, which is given to the sliver progressively the running distance that has been through the sliver of the, dissolved, so that only the crimping pinch point advances to the false twist point over the cover removal step. Then the fiber will become. Further, the range of tension to which the tape entering the drying chamber 9 is subjected to the sliver when it is subjected to the untwisted setting step in the th state is by using only the weak tension drying the elements Ta, Tb and Ic of the second set of pinch rollers 8a, 86, Sc, Sd and Se, each of which is not sufficient for one roll, it is possible to contain pinch rollers inside. The sliver 1, which has to be provided in multiple stages in order to thus be fixed, is made by the delivery roller to lengthen the drawing time,
zen 13 and 13 'in an unhindered state In the following some examples are given for the provisional and without recovery of the once lost sensory fixation with the help of the crimp according to the invention. According to the method according to the invention, the effect obtained by this fixing is the wool fiber band during the entire false twist ! Heat, and it then becomes the sliver in war crimp stretchability (CS <Vo).
men atmosphere through false twist treatment without

any slippage between the fibers within the ice ρ 1 e 1 1
The fiber band is distorted, and the fiber is then removed by using a woolen sliver

untwisted under tension and finally the 100% merino wool fibers, quality number 64

Sliver under low tension at a temperature and the dimension of which is 30 g / m and dii

temperature is dried, which is lower than the Tempe by the well-known worsted yarn manufacturing process

driving have been obtained and then completed by aging for three weeks in the form of comb balls in a known manner, and by using the same type of woolen sliver, which went through the same process steps, with the exception of the aging process and a provisional fixation according to the fixation conditions according to the invention obtained, ie a draft ratio of 20 to 40%, a number of rotations of 30 rev / m in the false twist step and a draft and hindrance time of 30 seconds, the respective crimp stretchability was sought. Further, a portion was left of these two types Kammgarnzug hochfeuchien in a atmosphere of 25 ° C and 80% relative humidity in the unobstructed state, while a further portion issued an attenuation at 100 ⁰ C in the non-disabled state. The crimp stretchability of these two types of proportions is also shown in Table 2.

Table 2

th wool spinning process and a three-week aging in combed bales were subjected in a known manner, and through the use of a similar chimney draft, which was not subjected to any aging, however, the fixation according to the invention under the conditions: draft ratio 30%, number of turns with false twist 30 rev / m and draft and dwell time of 30 seconds, these two were spun to a tail winder under substantially the same conditions. The pucker stretchability of these two was examined. Furthermore was left a share of these two types of sliver in a high humidity atmosphere of 25 ° C and relative humidity (RH) of 80 ⁰ Zo in unobstructed condition. Another proportion was subjected to cushioning in the unhindered state. These three were compared for crimp stretchability. The result is given in Table 3.

Table 3

Immediately storage

after for 4 h

Comb draw- 25 ° C and

manufacture RF20 ° .O

Muffled

Immediately storage free

after final for 4 h in the case of vapors

coil- 25 ° C and

winder RF8O ° / o

Known procedures

Aging
performed

Invention process
Delay about 20%:
Delay approx. 30%:
Delay approx. 40%:

2.11 3.21 5.11 With aging, each- 1.58 but without fixation ₃₀ (conventional Proceedings) 1.18 1.50 5.11 With fixation 1.11 1.14 1.41 5.04 (Invention) 1.05 1.20 4.80

2.54

1.32

4.84

5.05

35

As can be seen from this table 2, shows the wool top, according to the prior art has undergone aging exhibits significant curl recovery or curl recovery a very humid atmosphere in the non-handicapped -in or relaxed state and does not show a stable fixation effect during the spinning process. In contrast to this end, a top sliver fixed by the method according to the invention shows a satisfactory one Loss of curl after fixing and reveals a stable fixing effect, so that the once lost Crimps are unlikely to recover or be regained when the sliver is later used relaxed or unhindered state is exposed to a highly humid atmosphere. Through Attenuating the sliver thus fixed in the unobstructed state became crimps in such Extent regained, as was the case with the top sliver which underwent aging has been. The fixation according to the invention led even in the unhindered state during the entire spinning process not to return to the initial state. It should be noted here, that this fixation is such that the initial state only after the final treatment after spinning the fibers into a yarn or after processing the spun yarn into one Brings about textile material.

Example 2 _6s

Through the use of woolen sliver made of 100% Mcrino wool fiber, the quality number of which was 64 ^s at 30 g / m dimension and which was known to the test pieces of the aforementioned properties were spun on spinning frames. The draft ratio, the number of turns during the spinning process and the amount of shrinkage of the spun yarn in boiling water are given in Table 4. The spindles of the spinning frames were invariably rotated at a speed of 10,500 rpm, and the fineness of the yarns spun was invariably 50 ^seconds (metric freedom number).

Table 4

Warping number of Shrinkage hold on Thread breaks measured Spinning frame boiling water Aged, however 12th 20 / frame 0.8% not fixed men (known Proceedings): Not aged, 17th 12 / frame 0.8% however fixed men (Invention):

From these tables, it can be seen that by fixing, the crimps of the fibers become more satisfactory Can be removed wisely and stably. With regard to the good parallel alignment between the fibers were able to improve the draft ratio on the spinning frame and the number To reduce yarn breaks and also to increase the productivity of the spinning frame and to stabilize the operational sequence. The shrinkage at boiling Water of the yarns coming from the top

were made, the fixation according to the invention obtained did not show much difference when compared with the prior art yarns. These wool yarns therefore showed no problems at all in terms of quality from the point of view of the handle inherent in wool fibers.

In the process of making a top of wool as part of the entire worsted spinning process the sliver is first heated in its moisture-containing state by steaming and then receives a false twist while dampening the resulting sliver under tension;

then the sliver is dried at a temperature lower than that of the steaming treatment using a device which in series one behind the other a steam treatment chamber, a heating and false twist chamber, and a drying chamber, which are coupled to each other. Through this process, the crimps of the fibers of the sliver are removed eliminated to such an extent that it is merely ίο through a specific curl recovery step which is performed in the finishing process.

For this purpose 2 sheets of drawings

Claims (8)

Patent claims: 1. Process for the continuous fixing of woolen fiber tape in the manufacture of a top in the worsted spinning process, in which the woolen fiber sliver is warped when it is damp lind dries under longitudinal tension, thereby characterized in that the woolen fiber tape is under tension in the moist state Comb draw in the comb spinning process, in which one the Woli fiber tape in the aligned state under Long tension dries. When producing a full-combed sliver from a wool sliver, which consists of a number of Consists of single fibers, it is known that there ;, sliver by removing the crimps from the wool fibers shows better spinnability and smoothness Allowed warping, so that the following "L heated by steaming and thereby giving it a good spinning process, because the false twist is achieved by twisting the sliver occurrence of thread breakage considerably and then untwisting it and because it is possible to pre-combine the yield in the combing process under a weak one Tensile stress at
finer temperature dries lower than that to improve gear. However, a woolen fiber tape in such a Damping temperature is, the untwisting 15 drastically fixes that the wool fibers the <fes sliver is made by losing its own crimp forever «Let the length of the untwisted sliver section give the end product the full handle that is very small for wool than the mean length of the sliver is specific, so that the market value is reduced. It individual fibers suffering from it. it is therefore necessary that the treatment for smoothing 2. The method according to claim 1, characterized in that the crimp is only provisional, in order to indicate that the wool fiber tape is continuously used in a crimp content of 20 to during the entire heating process by steaming on a moist spinning process 30 ⁰ O and a temperature-free state and that it only then holds again at 70 to 110 C. get their ripples when they get one later 3. The method of claim 1 or 2, being subjected to curl recovery processes characterized in that one becomes the wool fiber, either after the fiber tied a false twist in the range of 15 to 40 twists per meter of woolen fiber tape. 4. The method according to claim 3, characterized in that the false twist generation for at least 0.5 minutes is carried out. 5. Device for performing the method according to claims 1 to 4. characterized through one of the wool fiber tape running through serband has been spun into a yarn or after the yarn has been woven into a textile material or has been wrought. In order to meet this requirement, it is customary to heat the fibers of a sliver in a Soaking water during the de-oiling process that follows after warping and heating, in order to briefly act as a secondary effect of the development Steam treatment chamber (5), at the outlet of which oiling step the crimps from the fibers are closed side, a warming and false twist cam are removed, and then in the following nmcr (S ') connects to the inlet and outlet steps of the spinning process, the sliver On the running side of the woolen fiber tape, a set of clamps is wound around a spool under tension. This rolls (4 or 7) and a false twist steps are re-equipment in the known spinning process (6) owns, and to which a 40 takes hold to get a wool sliver that a Connected drying chamber (9), which is a zylin- sliver made of individual fibers, and under tension has drical drying roller device. wrapped in the shape of a ball and then 6. Apparatus according to claim 5, characterized in that each of the sets of clamps is stored for aging in a dark and cold place for a long time. In this complicating roller (4; 7) consisting of two lower rollers (4a, 4c; la, 45th process, the temporary fixing of the wool 7c) and an upper roller (4b; Tb) that reaches the fiber band. This short-term fixing is located above the lower rollers. disadvantageous in that the once lost herbal 7. Apparatus according to claim 5, characterized in that the fibers are formed quickly by simply increasing them indicates that the false twist device (6) can be regained the temperature and the set of pinch rollers (7) of the outlet side 50 are exposed to the fibers. the heating and false twist chamber (S ') as described in Japanese Patent Application 42-4301 the techniques of fixing the fibers in a frizz-free state, in which one goes through sends steam through a container in which there is 55 a top of wool. In this procedure however, the tension on the wool fibers is very low and is only of the order of magnitude from 30 to 60 g per gram and meter of the fiber tape in the highest case, so that none are dislodged .sind that the rollers can graze the further 60 reaching smoothing. This is away from the Danipf treatment chamber in the following experiments. It became a test piece of woolen fiber tape hanging down when relaxed between two Pinched by the grippers of a tensile strength tester. These grabs were arranged in a Absland, which essentially corresponded to the mean length of the fibers forming the sliver. Then became the guide piece is extended with the help of this gripper. so Disordered are that the distance between them is less than the mean length of the Woli fiber ribbon forming single fibers, this distance being adjustable. 8. Device according to claim 5, characterized in that the drying roller device bus consists of a plurality of cylindrical drying Hvalzcn (Sa, 8r>, 8 c, 8i /. 8 p), the so an-