DE1660664A1 - False twist process - Google Patents

Description

PATENT LAWYERS

DR. E. WIEGAND DIPL-ING. W. NIEMANN

DR. M. KÖHLER DIPL-ING. C. GERNHARDT 1660664

MÖNCHEN HAMBURG

phone·. 3 »5314 2000 Hamburg so, December 1st, 1967

TELEGRAMS: KARPATENT KDNtGSTRASSE 28

W.I3436 / 67 12 / Me

Teijin Limited
Osaka (Japan)

False twist method.

The invention relates to a method of false twisting a continuous thin narrow film or such a film made of thermoplastic linear high polymer or a continuous fiber material this polymer. In particular, according to the invention is a method for false twisting such a film or created such fiber material, in which the film or the fiber material between them frictionally overlapping Surfaces of two rotating surfaces of the same diameter are passed through, which rotate in different directions, while they are in frictional contact surface to surface.

One purpose of the invention is to provide a novel effective method of making various modified yarns such as split fiber yarn or bulk yarn using a continuous narrow film or "

109825/1920

IbbUolU

to create continuous fiber material.

Other purposes and advantages of the invention emerge from FIG. description below.

According to the invention, the stated purposes and advantages are achieved in that a continuous thinner narrow film or continuous fiber material made of thermoplastic linear high polymer between them Frictionally overlapping surfaces of two rotating surfaces of the same diameter are passed, which are in different Rotate directions, namely along the direction of rotation of the overlapping surfaces substantially at the bisection line of the overlapping areas.

The term "continual thin narrow film" as used includes long material of any kind Shape, as far as it is continuous and-Münn, for example a tape, a web, a film or a tube, whereas the term "continuous fiber material" includes all continuous fiber material such as continuous spun yarn, continuous multifilament yarn, continuous threads uni strands or cables or ropes or the like.

The invention is exemplified below with reference to the drawing of several embodiments of the invention explained.

Fig. 1 is a perspective view of an embodiment of the contact between two rotating bodies, which in the Invention can be used.

109828/1926

ORIGINAL INSPECTED

- 3 - ί b 6 Ü 6 6 4

FIG. 2 is a sectional view along line II ¹ in FIG. 1.

Fig. 3 is a side view of another embodiment of rotating bodies used according to the invention .

FIG. 4 is a sectional view along line ΙΪ-ΙΙ ¹ of FIG. 3.

Fig. 5 is a schematic view for explaining an operation that a long material to be treated experiences between overlapping surfaces of two rotating bodies of the same diameter.

Figs. 6 and 7 are schematic views showing the relationship between in contact Areas and the axial distance between two annular rotating friction bodies are shown is.

Fig. 8 is a schematic view of an embodiment of an apparatus used in the case that the method according to the invention is used for the production of a split yarn will.

FIG. 9 is a schematic view similar to FIG. 8 an embodiment of the device which is used in the event that the method is applied according to the invention for the production of bulky yarn.

109825/1926 originally inspected

First, a description is given of the embodiment according to FIGS. 1 and 2.

At the tip of a rotary shaft 1, a circular flange 2 is formed, to which a circular disc 7 is screwed by means of bolts 4 , which carries a circular friction body "*> which has an annular rim, which is formed, for example, from appropriate synthetic rubber. The The friction body 3 is firmly attached to the circular disc 7 by means of adhesive and the whole is a rotating body 5. Another rotating body 5 * is formed by parts of the same shape and quality as the parts of the rotating body 5, and the corresponding parts of the rotating body 5 ¹ are are denoted by the same reference numerals as the parts of the rotating body 5 with only an * added. Accordingly, the rotating bodies 5 and 5 ^{1 have the} same diameter. As shown in the drawing, the rotating bodies 5 and 5 ¹ are arranged so that the circumferences of Outer surfaces of the friction ^{bodies 3, 3 f} rotate in opposite directions while they are on touch a correct or appropriate width surface to surface. Reference numeral 6 denotes a cross section of a continuous narrow film or continuous fiber material which is to be treated.

In Figs. J and 4 rotating bodies are shown which have a different design than the rotating body 5. » 5 ¹ according to

^109825/1926 OR ₁ S ₁₁ UL, NSPECTED

Pig. 1 and 2 and which can also be used in practicing the invention.

The rotating bodies 15, 15 ^f according to FIGS. 3 and 4 are rotating bodies with completely identical diameter, and on the outer peripheral surfaces or end faces of metal cup-like parts 12, 12 ', which are connected to a rotating shaft 11 or II ¹ by bolts 14 or . 14 ', annular friction bodies 15, 13 * are firmly attached by means of adhesive, and the rotating bodies 15, 15 * are designed so that they can rotate in opposite directions, while the annular outer end faces of the annular friction bodies 13, 13 * touch each other with an overlap, as in Pig. 4 is shown.

To carry out the invention using these devices, a continuous narrow film or continuous filament material is introduced between the surfaces of the respective rotating bodies 5, 5 * according to FIGS. 1 and 2 or 15, ^15f according to FIGS. 3 and 4, which are in surface contact with one another and while the continuous narrow film or fibrous material is arranged to be substantially on the bisection line of the contacting, overlapping friction surfaces of the rotating bodies, as in Pig. 4 is shown by the line AB, passes along the direction of rotation of the overlapping surfaces, the rotating bodies 5 * 5 * or 15 »15 ^! rotated in opposite directions. Then the Koritinulche learns

' ^r ) ■ 1 MH / 1 9 2 S

- ⁶ -) 66Ob64

narrow film or the continuous fiber material causes rotational friction from the friction surface of the two rotating bodies on the entire distance between points A and B. That of the film or fiber material at this point in time Experienced action is explained in detail below with reference to FIG.

Two circles shown in Fig. 5 schematically represent the two circular rotating bodies according to the invention, which rotate partially overlapping in opposite directions. The centers of the two circles are marked with O and O ¹ , the points of intersection of the two circles with A and B and the point of intersection of the line AB with the line connecting the center points 0, 0 * with C. A selected point on the line AB is denoted by D, and OA = a, OC = b, OD = χ and <AOC = <A. are denoted. When the rotating speed of the rotating body is η, a, b, jL and η are constant while χ is variable.

The advance path of the film or fiber material runs along the line AB as described above, but the advance speed and rotational or twisting speed of the film or fiber material at the selected point D on the line AB are equal to a speed component DF in a direction parallel to the advance direction of the film or of the fiber material or the same speed component DQ in a direction at right angles to the direction of advance of the rotational speed

1 0 9 « ι 5 / I 9 2 8

BATH

- 7 - ibBü664

speed DE at point D of the rotating body, (i) The advancing speed DP of the film or fiber material at the selected point D is given by the following Given equation.

DF = DE cos «£ EDF = DE cos ^ .DOC = 21fxn. -

= 271 nb

In this equation, since b and η are constant, the advancing speed of the film or fiber material is constant at all points of the line AB. M.

(ii) the twist speed DG of the film or fiber material at the selected point D is given by the following formula given:

DG = DE sin ^ EDJL = ED sin έ DOC = 27ixn ^#

From the above equation it can be seen that the twist speed of the film or fiber material is maximum at point A, gradually decreases from there and becomes minimal at point C, d. H. becomes zero, and after passing through point C the direction of the swirl velocity becomes vice versa and gradually increases until it reaches the maximum at point B.

(iii) The number of rotations per unit time of the film or fiber material at the selected point is as follows Given equation:

109825/1926

2 Πι η Vx ² -b ²

where t is an apparent diameter when the film or fiber material is twisted.

(iv) If the number of turns per unit length of the Of film or fibrous material at the selected point is expressed by T, T is sought by dividing the number of Rotations per unit of time at the selected point of the film or fiber material due to the advance speed at that point and it is given by the following equation:

_{T =} 2Tln) / x ² -b ²

fid 2'jfnb b ii ^v

As can be seen from this equation, the number of turns is the unit of length of the film or fiber material maximal if χ = a, and it becomes zero if χ = b.

If now with reference to Fig. 5, the situation of the twist ten files or twisted fiber material before point A is observed is that given by the equation

^ shown twist T distributed or b ^1L

scattered. In the case of FIG. 5, the direction of the twist is the Z direction. Between points A and C in Fig. 5 takes

109825/1926

the number of rotations of the film or fiber material gradually decreases and becomes zero at point C. The direction of the twist between points A and C is also the Z direction.

Between the points C and B the direction of rotation of the circular rotating body is reversed and the number of Rotations is zero at point C and becomes after the ν

Equation J ^^ ι ^at point B maximum. φ VrIiS -JL-

b τι

However, since the direction of rotation is reversed, the twist direction is the S direction. After the film or the fiber material leaves the point B, according to the principle of false twist the film or the fiber material untwisted or untwisted to the zero point and emerges.

As explained above, a long material including a film or fiber material to be treated with the point C in Flg. 5 * namely the center of the bisecting line of the overlapping surfaces of the two circular surfaces of rotation of the same diameter as the limit of opposing frictional effects in S direction and Z direction Direction is given and, as represented by vectors DG and DF, is given during the entire period of passage between the overlapping surfaces, an advancing effect along the lengthwise direction and a frictional effect from a direction at right angles to it, namely a transverse direction, granted. Therefore, in the method according to

«SPECTED

bbüb64

Invention of a long material to be treated during the period during which it is between the overlapping Surfaces passes through, held between these surfaces and inevitably advanced in its direction of advance and at the same time, with the middle of the overlapping surfaces as the border, it experiences a twist and a friction of left to right, so that it is twisted wrongly.

Using the aforementioned process according to the invention, it is possible to produce various modified ones To make yarns from continuous narrow film or continuous fiber material, e.g. bulky Twine or split twine. If a long material to be treated, for example a plurality of threads or a continuous narrow film or continuous multifilament yarn by a heater or by a Heating device and a cooling device is guided before it is between the overlapping surfaces of two rotating bodies is held, the material to be treated becomes a bulky product at this point because opposite Left-hand twist and right-hand twist with the middle of the bisecting line of the overlapping areas as the limit, so that according to the invention it is possible to produce a puffy Obtain yarn with very low residual torque. Again it is at this point because the two surfaces of rotation forcing the long material forward in its direction of advance, possible according to the method of the invention,

109825/1928

INSPECTED

to give the long material to be treated false twist, essentially without the inevitable creation of a Tension or tension on the material and a bulky yarn is produced at a very high speed.

W _e nn a continuous narrow film previously having a high stretching ratio in the direction of its length is stretched and highly oriented, and is preferably further crystallized, it is to because ^ in such a film in the direction of its length by turning operations and rubs when using the method according to the invention " such a narrow film is easily split, it is possible to produce a split fiber or a split fiber yarn. Further, at this time, as in the case of producing a bulky yarn, a bulky split fiber or a bulky split fiber yarn can be produced if the continuous film is passed through an appropriate heater or a heater and a cooler before it is passed between the two rotating surfaces.

According to the invention are as described above with the middle of the bisecting line of the overlapping surfaces of the two surfaces of rotation as the border, to a narrow one Film turning operations and rubbing operations from the left and right are carried out in opposite directions, making it possible is to split the film effectively, and because during the period the film inevitably by the rotating force of the two overlapping surfaces in its direction of advance

109825/1926 orig '^ l inspected

- 12 - 1b60664

high-speed decomposition treatment is possible.

Detailed descriptions relating to a method of manufacturing a bulky yarn and a Method for making a split fiber in accordance with the method according to the invention below.

When carrying out the method according to the invention it is sufficient to have a long material to be treated insert between overlapping surfaces of the two circular surfaces of rotation of the same diameter and along to the bisection line of the overlapping surfaces and along the direction of rotation of the overlapping surfaces let, however, when actually working, the rotating bodies 15, 15 * according to FIGS. 3 and 4 are the rotating bodies 5, 1 and 2 are preferred. This is because the invention requires that to be treated long material from its entry between the overlapping surfaces of the two surfaces of rotation at point A to Exit at point B is firmly held between the overlapping surfaces, and that it is advantageous that the touching parts of the rotating surfaces, as far as they do not represent the path of advance of the material, so small as possible, because the contact resistance is reduced by this proportion.

109825/1926

ORlGiNAL INSPECTED

- ¹ ^ - Jb6Ü664

Therefore, the rotary bodies 15, 15 ^{f are proposed as rotary bodies, in which annular friction bodies 13, 13 f are} firmly attached to the end faces of cup-like metal parts 12, 12 ¹ , which have ring-shaped edges, as described in the Pig. 3 and 4 is shown. However, the correct axial spacing of the rotating bodies 15, 15 * must be provided.

In the pig. β and 7, in which the mode of operation according to FIG. 4 is shown schematically, the outer circumferences and the inner circumferences of the overlapping surfaces of the two friction bodies 13, 13 'are represented by the curves p, p ¹ and q, q ¹ and des Positions of different axial distances of the rotating bodies 15, 15 ¹ are shown. According to FIG. If the distance between the center points 0, O ^{1 of} the two rotating bodies 15, 15 * is smaller than the sum of the inner radii r of the annular friction bodies 13, 13 *, namely smaller than 2r, between the intersection points H and I of Inner circumferences of the relevant overlapping surfaces of the friction bodies 13, 13 ^f , a distance present. As a result, a long material 6 to be treated moves away from the overlapping surfaces of the friction body 13, 13 'at point H, and when it reaches the overlapping surfaces again in the vicinity of point I, it experiences a strong pull, Impact orler the like, of the ring-shaped friction bodies 13, 13 * "fie ln in opposite directions, and that

lbbU664

Serious drawbacks such as uneven treatment and yarn trimming often arise.

Therefore, according to the invention, as in Pig. 7, the relative position of the two rotating bodies 15i 15 ^{f can} be made so that the distance between the centers 0, O ^{1 of} the two rotating bodies is at least greater than the sum of the inner radii r of the two annular friction bodies 15 * 13 ** namely at least is greater than 2r. If the distance between the two center points 0, O ¹ is denoted by 2b, the following formula must be fulfilled 2b> 2r.

In Fig. 7 a, this formula is shown fulfilling position and when the points at which the outer peripheries p p, ¹ and q the inner circumferences, q is ¹ the ring-shaped overlapping surfaces of the annular friction members 13, IJ ^1, the center line 0, O ¹ cut, are denoted by J, K, L and M, respectively, the smallest width of the overlapping surfaces of the two annular friction bodies I3, I5 ¹ becomes the distance LM, and according to the invention it is preferred that the line LM is not smaller than the transverse width d of a long material 6 to be treated when it is inserted between and held by the overlapping surfaces of the two rotating surfaces.

Wtihrtuiü dar ¹ rotation of the 'Γ · 1ιι ^: ΓΓ': ·:! Ίΐ;.; Λ »ϊ: i: · - .. · .- ■ u \ c ~ -'Λ -.orper Li, I.5 'iu'i'ährn, wall <Ίιι' (VLl Ur "--ifitUKi ϋ! .-; ---; -.!.: - *.:. fa! • 'Laugh 1. Ι' ¹ .; Ί ■! --V ¹ Ui ¹ Ui ;; ·; ■ '(»Hv ' oim _: ;, .- lic '» ri. ^ A' t 'V "U 1? 1.: · -«

BATH ORIGINAL

- ^χ 5 - IB6UB64

which has a radius of the line O ¹ C, and the inner circumference q does not touch the long material to be treated, this part has little wear, while a part between the circle y and the outer circumference ρ is in contact with the long material to be treated is exposed to greater wear and tear. Similarly wears from the overlapping surface of the annular friction body Ij5 ^! a part between a circle y ¹ , which is shown with the line OC as a radius, and the outer circumference p ¹ stronger.

Accordingly, when practicing the invention using annular friction bodies, it is particularly advantageous the width of the narrowest part LM of the overlapping Areas of the two annular friction bodies according to the formula below are not smaller than the width d of the to treating long material introduced between and held by the overlapping surfaces, and not greater than twice this dimension and preferably not greater than 1.5 times this dimension. Accordingly is

d = LM = 2d, and preferably di IM = 1.5d

109825/1926 original

- ^ - J66Ü664

Since the advance path of the long material to be treated fluctuates somewhat in the transverse direction, it is preferred Not making LM smaller than d, but if LM becomes too large, the consumable becomes large, which is undesirable is. The value of d can be determined experimentally.

By doing so, non-wearing parts on which the long material to be treated does not touch the overlapping surfaces, namely the ^{parts enclosed by the circle y and the inner circumference q and the circle y 1} and the inner circumference q ', respectively, are worn out and come into contact with the long material to be treated is worn, so that the respective overlapping surfaces of the annular friction bodies 15, 13 ^{1 are} worn uniformly and the life of the rotating bodies is extended and it becomes possible to give the material 6 to be treated about a uniform treatment for a long period of time.

One embodiment for making a split fiber using circular rotating bodies, the may be used in practicing the invention will be explained with reference to FIG.

In Fig. 8, a film formed from a high polymer, for example polypropylene, is shown, which on cut to a width corresponding to the denier of the desired yarn and four to ten times the length stretched to orient the film sufficiently and wound on a spool 21.

109825/1926

660664

A peeled cut film 23 passes over one sharp wire 22 through a tension compensation device 24, so that it has the required tension is granted. The film 23 goes through an Oarn guide 25 through and enters between two circular rotating bodies 26 via a sharp wire 22 *. The circular Rotary body 26 are pressed against each other by a spring 27 and give the film 23 a twist while they pull it down and rub it between their overlapping surfaces. With 28 a winding device is designated, and a twisting machine or a friction winder can be used.

It is essential that the film 23 passes substantially along the bisection line of the overlapping surfaces of the two rotating bodies 26. By doing so, it is possible to carry out the rotating and rubbing of the film 23 on the longest distance between the overlapping surfaces of the rotating bodies 26 while the film 23 is pressed by the rotating friction bodies so that it is sufficiently split.

109825/1926

ibbÜ664

The pressure is controlled by the spring 27 to the desired extent.

If necessary, it is possible to place a heating device or further a cooling device between the yarn guide 25 and to provide the rotating bodies 26. If a heating installation, device is provided, the split film, which is under sufficient tension and in the heater in twisted State is heat-set, sufficiently split, and a somewhat fluffy split fiber that is not twisted, however, maintaining a slight twist given at the time of heat setting is obtained. According to the Rotational friction of the rotating body as described above is, because the split yarn in different directions, namely the Z-direction and S-direction, at which areas AC and CB are twisted with the point C as the boundary, an effect obtained, which is similar to the effect of twisted yarn is, and as a result, the bundling ability of the obtained split fiber is enhanced and it becomes a characteristic split fiber that can be woven without losing a twist] is granted is received.

This means that the method according to the invention has the surprising advantage that characteristic split fibers with bulk or a characteristic split fiber similar to twisted yarn what cannot be obtained with a split fiber prepared by an ordinary method can.

109825/1928

As a split film useful for the production of a split fiber by the method according to the invention is a continuous thin narrow film made of a thermoplastic linear high polymer suitable that is sufficiently stretched and oriented to a large extent. The stretching ratio depends on the type of polymer but a draw ratio of 4 to 12 is usually used. However, choosing the one for that Process according to the invention suitable stretching ratio for the skilled person conveniently possible. Furthermore, regarding the tendency to split a fiber that is crystallized to some extent is desirable. Especially for the endeavor of the Splitting by twisting and rubbing is a film of one Mixture of at least two incompatible polymers, for example polyamide and polyester, for the process according to of the invention particularly suitable. As polymers which are used for the method according to the invention, are Homopolymers such as polypropylene, polyethylene, polyvinyl chloride, polyvinylidene chloride and polystyrene or a mixture made of polyester and polyamide and a mixture of polyvinyl chloride and polystyrene.

As a material for the wear parts of the rotating body used to produce a split fiber according to the invention are used, a synthetic rubber elastomer or a natural rubber elastomer is suitable, namely is particularly urethane rubber, which has great abrasion resistance

109825/1926

ib6Ü664

has stood, very suitable. In this case, the hardness is 60 to 100, and preferably 80 to 90.

However, it is also possible to use a rotating body for at least one rotating body that is made with powder mixed with a substance having high hardness such as powder of an abrasive and silicon carbonate powder.

When splitting a continuous narrow film in accordance with the method according to the invention there are depending on the properties of a narrow film and the operating conditions for the splitting, a case where the narrow film on completely separated fine Fibers is split, or there is a case where the narrow film into a continuous film with numerous fine splits, and as a result, the narrow film becomes a bundle of numerous fine fibers. In the description, the former product is called split Fiber and the latter are referred to as split fiber yarn and both are useful for the purpose of the invention.

The following is an embodiment for making a incorrectly twisted yarn using the friction rotating body with reference to Fig. 9 explained.

According to FIG. 9, continuous fiber material 33 is pulled off a Kötzer 3I and ^{provided with a predetermined tension via a sharp wire 32 and a tension compensation device 3 1} ^, then passes over a yarn guide 35 through a heating device 3 * 'and intervenes

0 9 Si 11 1 S 7 C _{0R) ß: NÄL} , _NSPECTE D

JbbU664

the rotary friction bodies 37 according to the invention, where tension and forward movement are imparted to the fiber material 33. With a spring is referred to, which the two circular Rotary body 37 presses against one another in order to exert the required pressure on the fiber material 33. The fiber material 33 * that emerges between the rotating bodies 37 is at wound up. If necessary, a cooling device can be arranged between the heating device 36 and the rotating bodies 37 be.

The fibrous material 33 is imparted twisting and forward movement by the rotary friction bodies 37, to be precise in the same way Manner as explained in connection with FIG.

In the event that at this time a mis-twisted part of the fiber material is limited to the area between points A and C in Fig. ₍ 5, because the process becomes a process very similar to an ordinary spindle process, the obtained yarn is obtained a bulky yarn in which the torque remains very strong in the Z direction.

In contrast, in accordance with the method according to the invention, a yarn which is heat-set in the Z-direction is twisted to zero and further twisted strongly in the opposite direction and then twisted or untwisted. With this last turning in the opposite direction, because the fiber material is not heated, it is not possible to fully apply the torque * .u L ^ eI, nj 1.5t .j ^ iUnjh uiüw, -

If; ' i γ. ' ι -, · BAD ORIGINAL

- 22 - IKK " ^f '' /

lent to obtain a bulky yarn, the torque of which was much is less than the torque of a yarn obtained by an ordinary false twist machine with a rotating spindle.

As a preferred condition in carrying out the method according to the invention it is considered that, if the fiber material enters between the rotating body, it is always stretched to a certain extent.

In the invention it is necessary that the fiber material when it is between the annular friction body is inserted and until it emerges from these, inserted between the annular friction bodies and from without failure should be kept to them. In the case where the centers of the two annular friction bodies approach each other and a space or distance is created between the two annular parts, the fiber material is in front the point A, a twisted shrinkage is caused in the fiber material when the number of twists in decreases in the range AC and this number becomes zero at C, and the fiber material must be relaxed by this proportion, and if not the fiber material is introduced and at this point is held, it is pushed out in a relaxed state and it becomes impossible to realize the false twisting processes stably and in this case, a bulky, low torque yarn cannot be obtained.

fm Q.jgen-uita to eiruitn ordinary i'aU;'.h> -: eiu ⁱ aLi i: en yarn, welohß3 uine mare i- ~ w, ^ ireri step δηλ - · -. ■. ·!> .. L ■: - *

BATH ORIGINAL

- ²⁵ - lbbU664

Dres torque required to reduce difficulties in unwinding the yarn on a knitting or loom, a misplaced yarn made by the method according to the invention and having a very small torque, has an advantage in that this step or this Another advantage kann.Ein be omitted step is, as shown in CSN examples is that the invention can be obtained "a treating speed by the method of which is very high compared to an ordinary Palschdrallverfahren.

A continuous fiber material that is used during manufacture a false twisted yarn according to the method according to Invention used consists of a thermoplastic linear high polymer and a polymer, for example Polyester, polyamide, polyacrylonitrile, polypropylene and polyvinyl alcohol are used.

An elastomer such as synthetic rubber or natural rubber is suitable as the material for the friction parts of the rotating bodies used in manufacturing a false twisted yarn. When producing a split fiber, a rubber with great hardness is suitable for splitting the film, and in contrast, when producing a false twisted yarn, a soft rubber with a pi oliem coefficient of friction and accordingly with a lower iij. rte ff is suitable. Taking into account then i ::

lbbU664

When producing a wrongly twisted yarn NBR is best suited, especially NBR with a hardness of 40 to 8o and preferably from 50 to 60. If done effectively To carry out the invention, it is preferred to supply an oil agent or lubricant to the rotating bodies for the purpose of abrasion according to the low hardness of the rubber.

In carrying out the method according to the invention it is necessary to use a film or fiber material for manufacture a split film or a wrongly twisted yarn to give a contact pressure that is in the area from 0.3 to 3.0 g / den.cm and preferably in the range of 1.0 up to 2.0 g / den.cm. Choosing the one for working suitable contact pressure poses no problem for the expert.

The invention is explained in more detail below with the aid of examples:

example 1

This example relates to the production of a split fiber with the method according to the invention.

A low pressure, high density polyethylene film was formed by ejection to be about eight times that of the original Length in the direction of its length only stretched in heated air and into a film 0.015 mm thick and cut to a width of 8 mm.

Using the apparatus of Fig. 8, the cut film was formed into a split fiber. the

109825/1926 originally inspected

Disks were two flat disks made of urethane rubber having a hardness of 85 and an outer diameter of 50 mm. The cut film was pressed with the disks of 4 kg, a tension on the film penetration of Treated 150 g, and the distance between the centers of the two disks was 28 mm and the film was processed at a speed of 200 m / min.

The split fiber obtained corresponded to about 1000 den, and each of the individual threads, which are meshes or braids, had a denier from J50 to 40.

Example 2

A stereospecific polypropylene film was ejected to give a 0.04 mm thick wide film cut continuously by a slitter to form a 4 mm wide slit film produced, which was continuously brought into contact with heated rollers, thereby increasing it by about nine times the original length in the longitudinal direction was stretched to make a film about 0.015 thick and wide of about 10 mm.

The film was formed into a split fiber using the same apparatus as in Example 1 except for the disks.

Discs were used which have two annular friction bodies made of urethane rubber with a hardness of 90,

109825/1928

- 26 - ι u u f * /

had an outer diameter of 50 mm and an inner diameter of 30 mm. The distance between the axes of the two disks was 30j8 mm.

The cut film was made with a pressure of the disks of 5 kg, a tension on the film entry side of 200 mg and a feed rate of 250 m / min.

The annular friction body parts of the two discs were worn evenly and the amount of wear was about 0.005 to 0.01 mm per 10 kg of treated amount.

The split fiber obtained was about 1200 denier. and each of the single threads that were meshes or braids, had a denier of about 25 to 35

The split fiber obtained had a strength of 3 * 5 g / den and an elongation of 18 %.

Example 3

The film according to Example 2 was used as the material.

The disks were two annular urethane rubber friction disks with a hardness of 90, an outer diameter of 5 ^ mm and an inner diameter of 25 mm. The distance between the axes of the two disks was 32 mm.

The cut film was with a contact pressure of the panes of ^ kg, a tension on the film entry side of 300 g and a forward movement speed of 260 m / min «

109825/1926 originally inspected

- 27 - lbbUb'64

The split paser obtained corresponded to about 1200 den and each of the filaments constituting meshes "had a denier of about 25 to 35.

The obtained split fiber was treated again to make the single filaments fine.

The split fiber was treated with a contact pressure of the disks of 4 kg, a tension on the entry side of 200 g and a forward movement speed of 300 m / min.

As a result, there was obtained a bundled v / oak split fiber having a strength of 3 g / den and an elongation of 20 % , the monofilaments, the Masohsn bsw. Represent braids, had a denier of about 15 to 25.

Example 4

In this example a method is described for producing a bulky split Paser.

The film and disks used were the same as described in Example 2.

A heating device for twist fixation was in front of the Discs provided, namely a contact heater with an arch shape and a length of 150 ram »The heating part was divided into two stages.

The film was made with a pressure of the Seheiben 4 kg, a tension on the film entry side of 200 g and a tension on the film take-up side of 50 g.

109825/1926

i 6 b U 6 6 4

delt. The distance between the centers of the two Disks were 1/2 inch and the film advancing speed or treatment speed was 150 m / min.

The temperature of the heater was in the first stage and 220 ° C in the second stage I30 ⁰ C, and the temperature of the film at a speed of 150 m / min was substantially 120 to I30 ⁰ C.

The number of false turns on the heating device was 400 turns per each under the aforementioned conditions Meters (400 T / M).

The obtained split fiber was bulky and alternately twisted in shape and each of the single filaments that Braids or meshes had a denier of 30 to 40.

The properties of the split fiber obtained were as follows:

Strength 3.5 g / den.

Elongation 22 %

Wet heat shrinkage 1.5 %

(boiling water)

Dry heat shrinkage (120 ° C) 3 to 4 %

The split fiber obtained had a handle very similar to that of natural jute, with hot wet shrinkage lower than that of jute and the dry-hot shrinkage was slightly higher than that of jute.

Since the fiber had alternating twisted shape, could

109825/1926

l6bÜ66A

woven them into a fabric without adding any additional twist will.

H The density of the warp thread and Senui? threads per inch

and a material of good quality ^? rde received., & qv as a primary support of a knob tr-op? clip ν -? -:.: - \ - ικρΑ &: w-yfl ¹ ^ could,

Za äf-amm BetspioX ^ l? C

Gar-iisr- r <it uon Verfährst g ^ siKf: usr Er;.; Är: äviis

He;.; Ar: aviis

ao a hfsXfciä ^ iirnpfc
of 1050 and 68 singles f ^ sen Y

a map of 70 naa einin / Vu £ endi3pehsE3i? ker before 5 ^ mm

&τΊ.>. Yjuröe hurries

eia & ii ⁵ Aühw? iiabst; aria tier beMs .; ubüeSlmn. ~ jq £ - 26 ras m << J Girier Ges3.hvfj.nd?, giceit from 80 in / min bs> iand «Xt.

/.Ir iTeizeinr-isht-img wu ^ a'Z ^ ϋΜ · ιΓ, Χϊίΐ'it-aitvfii »:. goffiLi ¹ Example 4 ^ ovwcncLisi, where the Temperatm 'ir »a?:, ör ^ iüä} level

230 ^G C and in a iwei'u & n S ^ ufv ¹ xCö ° C üri ^ i'g-

DL-i number dar FsLii- ^ Lareä ^^ J ^ ... i; ::; r_; j: c'.C;. ^^ ,: “^>: ΐΓν, ίί: Soiupuiikt of the passage äurel'i άίΰ H ^ iE ^ i'ii icfeti ^ -i ,, Lot-2'ug 7i; 0 b3, s SOG DrehLmgen ^ e Hoter mid dui'öli Vdeseksi: -. Γ, .νκνϊί '· Cooling device behind de-r Hs :: = zöIwS'iai * turig ^:.: Rci6 a l;.: -., Usohiges Musellea Garn eriial & a ».
This bulky giikrliiiueltc- ΰώΐ · ι _Α h.atte- eis- ülo ^ R ^ res

1C9S2S / 1S2S

"- ⁵⁰ - ibbUbo4

Torque compared to woolly yarn obtained by the usual spindle false twist process, and it was used for interior products such as carpets or upholstery © Cfe 've · ι wen 3 st »

Example 6

In this example, the production of a woolly Gd; - ¹¹ : - * small Peniers with a learning method according to the invention

E ^ was ei?} HaXbstump-fes b; svf _; hai sx'iänzerrrlas Folyamidgarri ^ In ^ s Den: 'tr ν? -; 70 Kit S'i Fi'-äelfraor Tar ^^ e ^ i *

";; ver ^ e ^ dc ou ^ height ^ had ben two annular body Mitrilkautseh.uk es- sfv of 5 ^ 'nan and a Irsnendurchmssser 25'πιω> a hardness of 50, a Außendurehi?.

The multi-thread yarn was with a pressure of the disks of 5 kgj a tension on the inlet side of 10 g, an axial distance between the two discs of 25.12 mm and treated at a speed of 180 m / min.

A heater as in Example 5 was used.

In this case, the size of the multifilament yarn was in the twisted state about 0.1 mm in diameter.

The number Ίβ. ^ Falachdrehungen at the time of passage through c * ie heater was 2900-3000 turns per M ^ ter "and by positively cooling the Mehrfadengarres also Hrhitsen dam a bulky crimped yarn was obtained

109825/1926 originally inspected

Example 7

This example also relates to the production of a small denier woolly yarn by the method according to FIG of the invention, however, a semi-matt polyester yarn of 75 denier and J6 monofilaments was used.

The disks were made of nitrile rubber with a hardness of 50 and they had two annular bodies with an outer diameter of 62 ram and an inner diameter of 25 mm.

The multi-thread yarn was with a pressure of the disks of 5 * 5 kg, a tension on the entry side of 110 g, a tension on the exit side in front of a winder of 6g, an axis distance of the two disks of 27mm and a speed of 200 m / min. The heating device according to Example 5 was used. the The temperature of the heating device was 260 ° C in the first stage and 210 ° C in the second stage,

The number of false twists of the multifilament yarn to the The time of passage through the heating device was 5200 to 3500 revolutions per minute and on the disk surfaces cooling water mixed with a few percent of a lubricant or oil agent was continuously added.

By forcibly cooling the multifilament yarn after heating, a sufficiently bulky crimped yarn became obtain.

10982S / 1926 ORiGiN-Al INSPECTED

Claims (8)

Claims 1. A method of false twisting a continuous thin narrow film or continuous fiber material, which consists of thermoplastic linear high polymer, characterized in that the film or the fiber material between frictionally overlapping surfaces of two rotating surfaces of the same diameter, which are in different Rotate directions while there is rubbing surface contact along the direction of rotation of the overlapping surfaces are guided essentially along a line bisecting the overlapping surfaces. 2. "The method according to claim 1, characterized in that that as parts of the Drehst surfaces with the continuous narrow film or continuous fiber material, parts made of synthetic rubber be used. 3. The method according to claim 1 or 2, characterized in that that the continuous narrow film or the continuous fiber material from the entrance between the overlapping Surfaces is held firmly between the overlapping surfaces until they emerge. 4. The method according to any one of claims 1 to 2, characterized marked, a & ß two annular friction bodies with the same Inside and outside diameter · can be used and a distance between the centers of the two ring-shaped 109825/1926 bad ordinal lbbUbö4 Exercise body is used that is not less than the sum their inner radii is. 5. The method according to claim 4, characterized in that a difference between the distance between the center points of the annular friction body and the sum of its inner radii is applied, which is not less than the width of the narrow Film or continuous fiber material and not greater than twice this width and preferably 1.5 times this width is. 6. The method according to any one of claims 1 to 5 * characterized in that for the production of a split fiber or a split fiber yarn a continuous thinner narrow film of a thermoplastic linear high polymer is used, which is stretched only in the longitudinal direction and is crystallized. 7. The method according to claim ό, characterized in that to produce a bulky split fiber or a bulky yarn from split fibers, the narrow film is fed through a heating zone or through a heating and a cooling zone before insertion between the overlapping surfaces. 8. The method according to any one of claims I to 5> characterized in that for the production of a puffy oil a continuous multifilament yarn through a heating zone or a heating and a cooling zone and then introduced between the overlapping surfaces, held between them and is passed through them. 10 3 8 2 5/1926 Blank page