CH221275A - Installation for the treatment of a textile thread, in particular intended for hosiery. - Google Patents

Description

Installation for the treatment of a textile thread, in particular intended for hosiery, By twisting a thread with the throwing spindle, an imparts a twist to it, the importance of which depends on two main factors 1 Speed of rotation of the spindle, 2 Linear speed winding of the wire on its support.

If these two factors are constant, and if the mill is operating normally, the yarn receives a substantially regular twist, i.e. when taking a measurement with a torsiometer, there are substantially the same number of turns per each meter. of thread.

This average regularity of torsion noted for a determined length of the yarn does not imply even an approximate regularity at each of its points.

Indeed, an examination with a magnifying glass reveals that in certain places the yarn resisted torsion more strongly than in others, and that the regularity recorded is only the resultant and the average of an infinity of irregularities.

By giving this thread a. limited torsion, for example 2400 turns for 200 denier rayon, it has been observed that these irregularities are accentuated and cause, in certain places, defects called "twists" or "chips" which alter and destroy its elasticity and its resistance .

These defects, due to phenomena well known in the throwing industry: 1 Limit the possibilities of torsion, 2 Reduce the solidity of the threads, 3 Cause, in the fabric, irregular creping and "warp openings". The subject of the invention is an installation for the treatment of a textile yarn, in particular intended for hosiery, a treatment which remedies the drawbacks mentioned and provides the following advantageous results: 1 Obtaining higher twists while preserving the yarn's solidity and its resistance. 2 Reduction or elimination of defects called "twirls" or "chips". 3" Regularization of the twist along the yarn and, consequently, obtaining of a more regular crimp and elimination or reduction of "chain openings41 .

4 Greater inertia of the yarn which can therefore be used in certain knitting or knitting trades.

Installation making. the object of the invention comprises a torsion ratchet, a moistening device, a support on which the yarn is wound and organs for holding the yarn under tension from its exit from the torsion ratchet to its winding on said support.

Preferably, the humidification device consists of at least one container intended to contain an immersion liquid.

The appended schematic drawing shows, by way of example, one embodiment of the installation according to the invention.

In the installation represented, the wire a, on its exit from a torsion ratchet b, passes through a barbin rotating around the axis of said ratchet<I>b</I> and a fixed barbin<I>f</ I> before diving into a container c containing a liquid c!. Coming out of it, it passes over a barrier bar g and a thread guide h before then rolling over a C# tube.

The container c can contain water, an emulsion or a solution of various chemical compounds, the essential condition being that it causes the creping reactions of the twisted yarn thus treated.

This immersion can be repeated. It is also possible to provide certain embodiments of the installation having several successive containers, similar or not, containing the same liquid or different liquids from the chemical or physical point of view and at different temperatures.

Under the effect of the liquid, the individual strands lengthen, equalize and unite simultaneously, the twists slide from one place of the yarn to another in the direction of their equalization.

(-end also finds that the defects, "tendrils" and "fleas--, which formed after the twisting rattle, attenuate or disappear in the container and under the normal tension of the thread during its journey towards the roller support, made up of tube E. The barbs, the wrapping bar .g, the thread guide <B>the,</B> keep the thread under normal tension.

The yarn obtained, especially once dry, is smoother and finer. It is less susceptible to twisting and more inert during weaving or knitting.

Claims (1)

CLAIM: Installation for the treatment of a textile yarn, in particular intended for hosiery, characterized in that it comprises a torsion ratchet, a humidification device, a support on which the yarn is wound and organs for keep the thread under tension from its exit from the torsion ratchet until it is wound on said. support. SUB-CLAIM Installation according to claim, characterized in that the humidification device consists of at least one container intended to contain an immersion liquid.