DE1660349A1 - Process for the production of nub-like textured textile yarns - Google Patents

Description

Dr.-Ing. Wooden houses

Patent attorney

Heberlein & Co "AG" ,, Wattwil (Switzerland)

"Process for the production of nub-like textured textile yarns"

The production of elastic textile yarns by temporarily twisting thermoplastic multifilament yarns by means of a false twist device and heat fixing in the twisted state is known. Methods are also known to temporarily twist up several multifilament yarns or monofilaments with one another by means of a false twist device, to fix them in the up-twisted state?, U and to separate the twisted back yarns ©

It has now been shown that when using this method, provided certain conditions are met, a knob-like textured yarn can be obtained, which enables the achievement of interesting novel effects in knitted and woven goods made from it.

The invention accordingly relates to a process for the production of nub-like textured yarns

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T6-60349

temporarily winding up a number of yarns together and fixing of the mechanical deformation in the turned up state, which is characterized in that the individual yarns are separated by a yarn conveyor device located in front of the yarn union point and then over each of the yarns at a distance from each other holding I thread guide organ are guided and united ο

The invention also relates to a device for carrying out this method, which is characterized in that a conveying element for separate feeding of the yarns is arranged in front of the yarn merging point and a thread guiding element is arranged in each case in the area between this conveying element and the merging point, keeping the yarns at a distance from one another, » it can for each yarn, a separate yarn guide member ZeB, on various supports arranged guide rings may be provided or all thread guiding organs can on a common carrier, such as a sign W corresponding with the number of yarns may be arranged the eyelets.

The inventive method can ζ · _Β β be performed by a conventional known false twist device, or by the so-called spindle-less method, according to which two or more delivered from spools yarn along a path mutually twisted, are subjected in this state to a heat fixation and separated again by continuously be pulled apart and wound up

The method according to the invention is particularly suitable for texturing both endless threads or thread bundles as well as staple fiber yarns made of thermo

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plastic material, in particular made of polyamides (polyhexamethylene adipamide, condensates of epsilon-aminocaproic acid or 11-aminoundecanoic acid), polyesters. (Polyethylene glycol terephthalate), material Vinyl-based (polyacrylonitrile) or polyolefins, also cellulose acetate, as well as mixed yarns made of thermoplastic lasers and non-thermoplastic natural fibers *

The method according to the invention is explained in more detail below with reference to M of the schematic drawings, for example.

Fig »1 shows a device for pimple formation by twisting two yarns»

Fig. 2 shows a device for pimple formation by twisting "four yarns»

Figo 3 shows the with the device according to Figo preserved thread on a larger scale

Figo 4

and 5 show the separated after the twist yarns ä _o

According to FIG. 1, the delivery bobbins, not shown, are withdrawn yarns 1 and 2 in parallel at a mutual distance of about 1 om by a pair of rollers 3, 4 serving as a conveying device and then guided over two thread guide rings 5 and 6 arranged at a distance of 18 mm from one another, whereupon them in a self-surrendering union

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point 7 converge and become twisted »the latter is at a distance of 6 mm from the plane in which the! guide rings 5 "and. 6 lie«

The ratio of the 18 mm distance between the two thread guide rings 5 »6 to the 6 mm distance between the yarn union point 7 and the plane in which the guide rings 5 are located is 3; 1 and therefore is within the practical as W low margin, found 5 i 1 ·

As a result of differences in tension and number of turns between the yarns 1 and 2, the point of union moves continuously in the direction of the double arrow A between the layers 7 and 7 ^1. This causes the yarn 1 to turn once around its axis and away from the yarn 2 is wrapped until a number of turns is reached, whereupon the yarns jump over and then yarn 2 rotates around its axis and yarn 1 is wound onto this until another jump takes place, etc. The twist k shown in FIG. 3 is obtained. The thread passes a thread guide 8 and a heating device 9 »in which the thermoplastic fiber material is temporarily converted into a plastic state, whereupon the spiral deformation is fixed by re-hardening; in the separating point 1o, the two yarns 1 and again are separated · The separate yarns 1, 2 are shown in FIG _e appearance and have nubs 4- shown 2o medium Grosse on ·

In the device shown in FIG. 2, four yarns coming from delivery bobbins (not shown) are produced

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11, 12, 15 and 14- parallel at intervals of about 3 through a pair of rollers 3, 4 and then through in the corners of a square with one side of 14 mm arranged eyelets of a shield 19, whereupon they in a self-evident Junction 15 converge and become twisted · The junction 15 is located now at a distance of about 7 from the surface of the shield 19ο

The ratio of the mutual distance of 14 mm between the eyelets lying in the plane of the shield 19 and each forming a thread guide element: to the 7 mm distance of the yarn union point from the plane of the shield 19 is 2; 1 and can be addressed as the optimum of the above-mentioned favorable margin 5 *

The junction point 15 moves between the yarns and the twisting force acting on the combined yarns in the direction of arrow B. in a circle · Only one thread is rotated around its axis while the other is turned Wind the yarn on the same until there is a jump in the direction of arrow B. the next yarn is rotated around its axis, while the remaining yarns wind up on the same, etc. » The thread thus formed now passes a thread guide 16, the heating device 17 and arrives to the separation point 18, where the four yarns 11, 12, 13 »are separated again · You then have the in Fig. 5 shown appearance and have medium size Nubs 21 on.

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Knitted fabrics made from the yarns according to the invention Knitwear and woven goods are largely similar to textile articles in terms of appearance and feel Natural fibers. Furthermore, most of the irregularities contained in the raw yarn disappear "

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Claims (1)

Patent claims: 1 «) Process for the production of knob-like textured Textile yarns by temporarily turning up a number of yarns together and fixing the mechanical ones Deformation when turned up, characterized in that the individual yarns are separated by a yarn conveyor device located in front of the yarn union point and then via each “one” the yarns are guided and united in a thread guide element that keeps a distance from one another * 2 ·) "Method according to claim 1, characterized in that that the ratio of the mutual distance between the thread guide elements and lying in a common plane was between 5: 1 and 1: 1 to the distance of the yarn union point from this plane 5.) Method according to claim 2, characterized in that the ratio of the two distances is 2: 1 4-.) Device for performing the method according to claim 1, characterized in that before the yarn union point a conveying element for the separate supply of the yarns and in the area between this 3? conveying element and the junction point is a thread guide member that keeps the yarns at a distance from one another is arranged 5o) device according to claim 4, characterized in that that a separate thread guide element is provided for each thread and the mutual distances between these organs are adjustable » 109816 / 20U 6β) Device according to claim 4, characterized in that that all thread guides ο rgane are arranged on a common carrier. 7.) Device according to claim 6, characterized in that the carrier consists of a shield (19), the one corresponding to the number of yarns, one each Has guide organ forming eyelets, which are arranged in the corner points of a regular polygon are" 109816/20 1 4