CS214636B1 - Hybrid high-volume filament yarn with different coagulation - Google Patents

Abstract

Hybrid high-volume yarn from two types of continuous filaments with different shrinkage with a filament yarn made of continuous filaments with a higher shrinkage, which after shrinkage complete and anchor the clouds and loops created by shaping in a gas medium stream on elementary filaments and lower shrinkage or non-shrinking filaments. Shrinking filaments are polypropylene continuous filaments with a shrinkage at least 5% higher than the shrinkage of low-shrinking or non-shrinking filaments at a shrinkage force of at least 0.1 oN/dtex.

Description

214 636

It is an object of the present invention to provide a hybrid, high-volume continuous filament yarn with annealing properties.

The filament yarn is a textile fibrous structure, which is the most advanced form of replacing staple yarns with filaments.

The first step in this substitute is a shaped endless filament, which is practically always produced by molding a false twist and then provided with a protective twist. The modified shaped continuous filament is overwrapped in the air nozzle after fake twist shaping, thereby making the fiber interlocking and entangling such that it fills the protective twist. In this case, the air nozzle is not part of the molded endless filaments and the staple yarns are staple-shaped shaped filaments prepared by air-forming and so-called endless yarns.

The air-shaped endless yarn provides a higher quality garment compared to the filament-shaped fake twist. Men's socks made of them do not show a tendency to be thrown, they are suitable for the production of anti-skid teets, from which they make ski suits. In the suit of suede fabrics, they compete with the endless filament-shaped filaments for application where yarns or blends of PBS / wool and PES / visosis have been used so far.

In all air-forming processes, one or more of the more expensive endless rolls with the same or different but also fluctuating advance are introduced into the air-forming nozzle in which the gaseous medium is turbulent. The fibers are first blown apart by forming clouds and loops and then knitting into a compact fiber formation, the yarn. As a result, on the surface of the curves and loops formed, these endless yarns exhibit a higher bulkiness and opacity, while still having a relatively inelastic core.

It is possible to produce blended yarns and viscose or acetate silk, which is advantageously manifested in the clothing fusion, or to process yarn from staple fibers together with filaments.

This provides great possibilities for variation and achieves a bulky character from uniform to spectacular, one of the variations is the shaping of endless fibers with different clotting, so-called hybrid molding.

This is a corrugation of the flow in the gaseous medium with subsequent mating of the maturing component immediately after the air formation in the fixing zone or up to the nitric or planar structure.

The puncture of the clotting fibers is not only in increasing bulkiness but also in better anchoring and bonding of curves and loops formed on low-slip or non-shrinking fibers. The CS 175 764 Hybrid Shaped High Volume Thread, contains fibers with different coagulation, exhibiting on the elementary fibers clouds and loops formed by the mechanical shaping of a stream of gaseous medium, the volume of which has been weighed up by bearing at least 15% of higher coagulation elemental fibers, based on a copolyester of polyethylene ether-isophthalate having a shrinkage force of at least 0.1 cN / dtex, while stabilizing mechanically formed and coagulating shrinking loops and loops of elementary fibers with lower precipitation, is produced by molding a mixture of small coalescing or non-shrinking fibers with high-shrinkage fibers in the air spout with subsequent precipitation. The production of a hybrid high-volume filament yarn according to the present invention has the disadvantage that the co-fibers based on the copolyester polyethylene ether and isophthalate precipitate very rapidly at the precipitation temperature and their coagulation is highly dependent on the precipitation medium. Since the non-shrinking fibers are not so quickly displaced to the new positions, some of the precipitation forces will be wasted and the high volume of dust will not be reached;

Claims (1)

214 636 In addition, the preparation of copolyester polyethylene terephthalate and isophthalate copolyester fibers is very demanding and costly. The above-mentioned drawbacks are solved according to the invention by hybrid high-volume yarns of non-coniferous fibers with different coagulation, in which higher coagulation fibers which, by their formation, make up and anchor the clouds and loops formed by the flow of gaseous medium on the elementary fibers with lower coagulation or non-shrinkage, precipitating. polypropylene fibers with a precipitation of at least 5% higher than the precipitation has -lo-precipitating or non-shrinking fibers at a clotting force of at least 0.1 cN / dtex, The advantage of this solution is that the precipitating polypropylene fibers precipitate gradually with increasing thermal stress. with temperature and it is also possible to carry out multistage precipitation without decreasing its efficiency or converting and shedding at elevated temperature if low precipitation is detected. The precipitation is not dependent on the precipitation medium and therefore it is possible to coagulate the precipitator as well as steam as in hot air. Gradual precipitation allows the full application of high precipitation forces at lower temperatures and high precipitation at higher temperatures. The use of precipitating polypropylene fibers provides an economic advantage as their production is less demanding and economically advantageous. Because they are virtually non-surfactant, they allow, in admixture with other surface-dyeing, polyester or polyamide fibers, to achieve a zone-annealed dyeing, possibly even a blazing effect. If they are dyed in the mass, their precipitation decreases, only very little, on the other hand, has a high fastness color, a pit in the light. Example 1 Two continuous filaments, with a 20% viscose silk 110/40 dtex as a non-precipitating component and with a 10% smooth, non-slip coagulating polypropylene silk 84/25 dtex with a coagulation of 23%, are introduced into the air forming die. at 150 ° C and precipitator at 0.23 cN / dtex. Immediately behind the forming nozzle, where mechanical formation of bends and loops occurs, the shaped insert is subjected to heat treatment in a hot air environment at a temperature of 150 ° C, whereby precipitating polypropylene fibers are precipitated and thereby armed and curved. and loops formed in the air-forming sleeve on non-shrinking viscose fibers, while at the same time increasing the cohesion of the fibers by improving interlocking, thereby increasing the bulk of the hybrid yarn. The hybrid high-volume filament yarn thus prepared has a look and full poppy shape similar to spun yarns. Example 2 At the same time, two continuous filaments are fed into the steam-forming die, with a 25% pre-stitch smooth, non-crimped polyester textile silk 84/36 dtex with a coagulation in water8.5% as a low-precipitation component and with a 10% smooth, crimp-free polypropylene 110 / 33 dtex with precipitation in air at 155 ° C 30.5% and a precipitation force of 0.17 cN / dtex as a precipitation component. After continuous heat treatment with hot air at 155 ° C in the fixation chamber immediately after molding, the volume increases and the character of the staple yarn is achieved. SUMMARY OF THE INVENTION Hybrid high bulk yarns with different coagulation, characterized in that higher coagulation fibers which, by their precipitation, form and anchor curves and loops formed by shaping in a stream of gaseous media on demented fibers with lower weight or non-shrinkage are precipitating polypropylene fibers having a precipitation of at least 5% higher than the precipitation of low-precipitation or non-precipitating fibers at a shrinkage force of at least 0.1 cN / dtex.