DE1435331A1 - Process for producing elastic textile goods - Google Patents

Description

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H35331

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July 26, 1968

Albert Marcel Cyprien ALEJUNDSJi, Saint-Pierre-de-Colombier,

Ardache (France)

Process for the manufacture of elastic textile goods

For the production of fabrics on the basis of watch-rope A method has already been proposed for threads made of synthetic material, at least in chronological order certain of the following, partly on the threads, partly on the fabric includes applied levels;

1. Twisting two spun threads, whereby the torsion caused by this twisting works in the opposite direction to the torsion of the most strongly twisted thread, whereby a meohaniao-high stabilization of the twist is achieved after weaving, even if at least one of the twists is completely free from scratches, but very strong fibers

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contains. It has been found that the preferred torsion value for the thread is in the range of 1700 turns per DJ lies when threads are spun in the same direction of rotation twisted in the opposite direction of rotation.

The teeth produced in this way can be easily knit or interweave and allow a very large variety of binding binaries for the goods.

2. An additional, slowly guided stabilization that in practice lasts at least two hours on one Temperature below 40 #, measured as a percentage of the Celsius scale, which allows for complete shrinkage without damaging the. one of the most indigenous of those forming the pass !! Fiber. required temperature =

3α thermal shrinking treatment of the fabric, which is free of creases and wrinkles, preferably with constant movement, the treatment temperature being able to reach the temperature for complete shrinkage without damage for a few tens of seconds, and prior vacuum treatment, as well as supply of an inert gas , which is advantageous to achieve a temperature rise and Tesperaturabfalles.her ™ as quickly as possible. is attracted. ■. .. -. - -. . _: . . _ _:. . . . _^::, -. ... ■ ..-... ■■ ■ -5-

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When these measures were followed, it was found that that the scope of the process extends to the use of very elastic, synthetic materials, in particular of materials based on polyurethane, ■.

It has also been found that the twist reaches a preferable value not only when the threads are spun in the opposite direction to the twist, the value being in the range of 1700 turns per iu, but also when the threads themselves have an opposite spin, the Has a value in the range of 650 turns per m opposite the twist of the most twisted thread. These preferable values are independent of the fact that the filaments are opposite to those according to the Kcechlin ¹ law.

The method according to the invention enables twisting one thread made of very elastic material with another thread with little or no stretchability, any fiatur, i.e. a synthetic or natural colored one or raw, fanciful or regular, shrunk or free from shrinkage, continuous or discontinuous or more or less twisted fibers

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like those listed in the above patent application Threads.

An essential feature of the invention is that that the union of the elastic and the inelastic thread by means of a hollow spindle while maintaining the rotation of the elastic thread is made that the elastic The thread is kept under tension during the joining and that the textile product undergoes a steam-heat treatment up to the temperature of the complete shrinkage of the weakest textile fiber in this product is subjected.

The application of the method to elastic fibers makes it possible to produce elastic fibers in a simple and economical manner To obtain threads in the form of twists that are easy to weave or knit and where it is possible is to control the elasticity.

By influencing the twist at least one The thread of the twine can be used to improve the elasticity of the Affect the thread. E.g. by increasing the twist of the elastic thread alone and / or decreasing it the twisting of the twine reduce the extensibility of this twine and increase the resistance to a given elongation. Vice versa can be achieved by reducing the spin rotation of the

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elastic thread alone and by increasing the twisting

of the thread

treatment / alone or through both measures to increase the elasticity and reduce the resistance of the thread to a given elongation.

It is also possible to influence the elasticity of the goods using an appropriate weaving technique, whereby the results obtained by spinning and twisting can be completed.

To date, elastic threads, which were made of an elastic, synthetic material, were after Manufactured spinning process in which a number of turns of a cover thread around a non-twisted Core wraps. These threads are very difficult or impossible to weave, since the cover windings tend to run along the relatively smooth soul formed by the elastic thread to shift and collect in specific places, which makes it easier to break the thread and provide control elastic elongation becomes impossible.

In contrast, by the above-mentioned method the soul of the thread can be a crimped thread that is heavily twisted. The grazing will be at a completely constant rate Tension applied. These two unite

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th features eliminate those that occur with wrapped threads defects mentioned above. In addition, the elongation of threads produced in this way is due to the elongation the casing limited, whereby a control of the elasticity of the threads is possible.

The soul of the thread is always the most twisted one Thread that contains non-shrink fibers. According to this invention, the soul of the thread is similar Way always made of elastic threads that are non-shrinking and are most twisted.

In addition to the handling advantages explained above, the elastic thread according to the invention has a remarkably fluffy look caused by the uffl clothing thread when you consider the natural one The restoring effect of his soul can take effect. This effect is particularly evident in jerseys and from Falling off of the loom from fabricated fabrics is advantageously noticeable, but is intensified by the thermal Shock. In certain cases, however, appropriate interweaving can be sufficient, with the goods then only is subjected to the usual dyeing and finishing treatments.

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The elasticity of the received goods works through the interweaving and is due to the thermal shock of the goods transmitted constantly and permanently. It is possible you ever after the use of the fabric or the knitted fabric very different lent properties and give them the usual To submit to dyeing or finishing treatments, which hardly affect the elasticity.

The invention is explained in more detail below with reference to the drawings of exemplary embodiments.

1 to 3 show an elastic twisted thread on a correspondingly enlarged scale according to the invention, namely without tension, at medium tension and under full tension or with full tension of the corresponding goods.

According to the invention, one is at least partially elastic, i.e. one made of, optionally with conventional threads connected, elastic threads in weft and / or warp, obtained goods in the following way:

First, the elastic thread is spun in such a way that its twist is reinforced, thereby reinforcing one Soling and spindle speed is combined, whereby

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a constant voltage is maintained. The one on this Wise spun elastic thread is wound onto metal pipes, for example.

The elastic thread is then twisted by twisting it with at least one thread which is not particularly elastic and which can have the features mentioned above. The w twist may advantageously be carried on a hollow spindle, the latter voiij elastic yarn is traversed, the one in analogy to the wound as the core of the twist can designate. The tension of the usual thread forming the sheath is kept constant, while that of the elastic thread can change somewhat.

With these conditions, which are identical in every respect, such as speed, voltage, regulation of the loop, Produce hardness of the bobbins, S and Z twists that are absolutely symmetrical. In practice, this is essential to obtain woven and knitted fabrics with uniform properties.

The twists made in this way are advantageous subjected to prolonged stabilization treatment with low-temperature steam before being treated with a Agents based on linseed oil can be treated and wound up.

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The thread has a characteristic appearance, which depends primarily on its tension and which can be seen in the accompanying drawings. In Fig. 1 shows the thread untensioned and forms numerous knobs. In Fig. 2 it has a medium tension, with knobs still appearing, whereby the fluff-like appearance of those made with this thread Goods declared; In Figure 3 the thread is as it is woven is displayed with an even higher voltage, regardless of the fact that the particular selected voltage value can still be exceeded.

In the woven or knitted fabric, the tensile forces are between the threads are distributed very evenly, which means that they have a value significantly below that of the thread component, which is made of non-elastic material. Since the state of equilibrium is established, the casing is under Formation of knobs and depressions completely wrapped around the elastic core of the thread.

The invention is for better understanding to the the following examples, the first and third of which relate to inextensible threads, while the threads of the second and fourth example have an elastic core and are manufactured according to the invention.

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Example I.

The soul is made out of a thread or a pre-spun thread made of superpolyamide iuit 70 denier, Lehrstrangig and without shrinking a thread halfway with a S-twist with 2 20Ü T / m (tours per m) and halfway a Z-twist with 2 200 T / m (core).

In order to use the same raw thread, a cover thread is made

half with an S-twist with 650 T / m and half with a Z-twist iait 650 T / m as a wrapping thread.

The symmetrical threads are made with a hollow spindle according to the following list:

Components twist

Nylon core, 70 drs, 2 200 TA, S

650 TA, Z sheath nylon 70 drs, 650 Τ / πι, Ζ

Nylon core, 70 drs, 2 200 T / m, Z

, 650 TA, ö

Serving 70 drs, 650 T / m, p

Example II

A crimped thread is produced similar to Example I, with an elastic thread of 70 drs, multi-stranded and non-shrink, based on polyurethane like it is traded under the name "lycra". The thread is

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on the hip with an S-numbering of 2,200 T, ⁷ % and half with a / i-numbering of 2,200 l / m.

One uses example I for this thread same wrapping:

Components

bee le "Lj era" 70 drs, 2 200 T / m, b

Wrapping Wylon 70 drs, 650 T / m, Z

bee le ¹¹ L ^ era "70 üru, 2 200 T / m, Z g 70 drs, 650 Τ / ω, S

Twisting 650 T / iD, Z

650 T / m, b

The above examples relate to pile threads, their sea starch twisted uind. The following tables give examples of threads whose components are identical j: iit those of Examples I and II are their twist but less strong:

Example III

Components

Core nylon 70 drs, 650 T / m, S coating Uylon 70 drs, 200 T / m ,. Z

beIe nylon 70 drs, 650 Τ / ω, Ζ Sheath nylon 70 dr3, 200 T / m, b

Twisting 650 T / lj, Z

650 TAi, b

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Example IV

In this example the same components are used as in example II, but the twist is same as that of Example III.

Components twist

Soul "I ^ cra" 70 drs, 650 T / m, b

650 T / 111, Z coating Wjlon 70 ur &, 200 Τ / ω, Ζ

Soul "Ljcra" 70 drs, 650 T / m, Z

nylon 650 T / m, p

ÜiLhiiliung / YO drs, 200 T / m, S

Of course, these examples are not limiting.

A qete made from threads made in this way Waie takes into account after thermal stabilization of the threads and an additional treatment with a Agents based on linseed oil meet the requirement for very high uniformity of the tensile stresses for the threads. One can also incorporate less elastic threads into the goods.

From the above examples, the absolute interchangeability of components made from super polyamide and synthetic, ü.Multi-strand, very elastic threads can be seen.

The twisted yarns composed according to the invention can be used for knitted or woven fabrics, each

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but always symmetrical due to an extremely large change the equipment. They can be exchanged for one another or with the usual fiden.

The knitted or woven fabrics produced have, in addition to the appearance already described, an important aspect or less great elasticity, if only pure elasticity without a crimping effect is to be achieved, only threads according to Example IV need to be used. This elasticity can be more with elastic threads running in only one direction of the manufactured goods or less large percentage, the threads used alternately with different threads if necessary will. It can correspond to the same percentage for more or less elastic threads, if these threads Entiang two directions of the goods run. These percentages can be different in the weft and warp.

Elastic crimped goods can be obtained by alternating elastic threads according to Examples II and IV woven with conventional, sufficiently twisted threads, threads having a relatively high proportion of strands or can also contain compound threads.

One can use elastic fabrics or knitted fabrics with fluffy Obtain appearance by making the same vlasti-

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see twisted leg, 'next to alternating ji.it u, high-ranked, few twisted threads and with a relatively large number of strands used promises nät Fiaen luit wc 11-artigeiu Handles that have discontinuous fibers, in particular acrylonitrile fibers, or udt thread based on natural fibers.

fc It is sufficient to combine these two possibilities, including an elastic crepe juit schauuiartiguj look to obtain.

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Claims (3)

Patent claims: 1. Process for the manufacture of elastic textile goods, from a. · elastic, wäruiekruiüpfable synthetic thread that has at least one inelastic thread is united, characterized in that the unifying of the elastic and the inelastic thread by means of a Hollow spindle while maintaining the rotation of the elastic Thread is made that the elastic thread while is kept under tension during the process, and that the textile goods are subjected to a steam-färiiie treatment up to the temperature the total shrinkage of the weakest textile fiber in this üare is subjected. 2. Ve-lahreu according to claim 1, characterized in that aass '' } rotation of the elastic thread is higher than that ues inextensible thread with which it is twisted. 3. The method of claim 1, wherein the elastic and the inelastic thread have their own twists in the same direction, characterized in that the twist at approximately 1,700 l) repetitions / m are performed. 4- The method according to claim 1, wherein the elastic and inelastic thread intrinsic twists of opposite directions Hiciituug, characterized in that the twisted twist is carried out at about 65 ° turns / m. 909841/1383 bad original U35331 -Ιο ί ;. The method according to claim 1, causes the zvirn of a defensive stranded FLJ trunks -,;. Ara. Treatment by feuciite we ^ e at a temperature νου less than 40 i> the HJühüi temperature. ^ Ahre ^ u oer shrinkage treatment we submitted . 909841/138 3