JPH024700B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention provides a method for producing a novel designed yarn, specifically,
The present invention relates to a method for manufacturing a turbulent entangled yarn having a slab-like thickness change effect.

Conventional turbulent entangled yarn is usually known as Taslan processed yarn, and is a very bulky yarn in which the constituent filaments of the multifilament yarn are entwined with each other to form a variety of loop fluffs. It is a fluffed yarn. Some of the decorative yarns in this turbulent entangled yarn are obtained by applying turbulent entangled treatment intermittently, but in such designed yarns, the portions that are not subjected to turbulent entangled treatment are multifilament yarns. The properties of the yarn are shown as they are, but the characteristics of the fluffed yarn are lost in that part.

In addition, as a composite fancy yarn obtained by simultaneously false twisting and crimping two types of multifilament yarns, one multifilament yarn is wrapped around the other multifilament yarn in a single manner, and the other multifilament yarn is wrapped in three or more layers. A design thread in which the threads are intertwined in alternating states is also known from Japanese Patent Publication No. 35147/1983. Since it is a decorative yarn obtained by false twisting and crimp processing, it can be used not only in the thick part where the entwined multifilament yarn is wrapped three times or more, but also in the thin part where it is wrapped in a single layer. However, compared to turbulent entangled yarn, it has no fluff and is less bulky. There is also the problem that the multifilament yarn used is limited to thermoplastic multifilament yarn.

The present invention has a slab-like thickness change effect,
Furthermore, the present invention relates to a method for manufacturing a designed yarn that does not lose the characteristics of a fluffed yarn even in its thin parts.

The present invention provides a method for manufacturing a decorative yarn by the above-mentioned false twisting and crimp processing, in which the twisted filament yarn is wound around the core filament yarn without heat setting, and the twisted filament yarn is not twisted after passing through the false twisting means. This was done based on the discovery that by subjecting both filament yarns in such an entangled and doubled state to turbulent flow treatment, a slub yarn that is completely fluffy can be obtained.

That is, in the present invention, a multifilament yarn is passed through a false twisting means without heating, and another multifilament yarn is passed from the side of the multifilament yarn that is being falsely twisted on the upstream side of the false twisting means until the confluence point is reached. The multifilament yarn is fed so as to traverse the direction of travel of the multifilament yarn that is undergoing false twisting, so as to intermittently cause triple or more windings, and both multifilament yarns in a doubled state after passing through the false twisting means are fed. A method for producing a designed yarn, which is characterized by subjecting it to a turbulent entanglement treatment. Therefore, the multifilament yarn used in the method of the invention does not necessarily need to be thermoplastic.

Hereinafter, the method of the present invention will be explained based on the drawings.

The figure shows a schematic side view of an apparatus for continuously carrying out the method of the present invention, in which FR1 is a feed roller for multifilament yarn Y1, FR2 is a feed roller for multifilament yarn Y2, and G is a multifilament fed by feed roller FR2. Yarn Y2 guide, S is false twist spindle, DR
is a take-up roller, N is a turbulent entanglement treatment nozzle, T1
and T2 is a tension guide, and WR is a take-up roller.

The multifilament yarn Y2 is drawn out by the feed roller FR1, given false twist by the false twisting spindle S, and taken off by the take-up roller DR.
is fed between the feed roller FR1 and the false twist spindle S by the feed roller FR2 via the guide G, and the multifilament yarn Y2 is wound around it by the false twist rotation of the multifilament yarn Y1. Then, as the supply speed of the multifilament yarn Y2 is increased, the confluence point P of the windings comes to traverse in the traveling direction of the multifilament yarn Y1, and due to the traverse, the multiple windings of triple or more are intermittent. occurs in The twisted state obtained under such conditions remains even after both multifilament yarns Y1 and Y2 pass through the false twisting spindle S and exit the take-up roller DR, even if the state is not thermally set with a heater. However, the effect remains that the two yarns are not separated, and the multiple windings give a slab-like thickness change effect. However, the interconnected state is not as strong as when it is thermally set with a heater. Therefore, when the entangled filament yarn coming out of the take-up roller DR is treated with a turbulent entangled treatment nozzle N such as a Taslan nozzle, it has a slab-like thickness change and loop fuzz occurs throughout. A turbulent entangled yarn is obtained. The yarn wound by the take-up roller WR after passing through the tension guides T1 and T2 is such a fluffy slub yarn, and its bulkiness is far superior to that of a designed yarn produced by false twisting and crimping. .

The method of the present invention is not limited to the above-mentioned example; the entangled filament yarn leaving the take-up roller DR may be wound up once and then subjected to turbulent entanglement treatment in two steps, or the turbulent entangled treatment may be performed in two steps. You can use a method such as spraying on a wire mesh etc. with compressed air, or you can use the method shown in the figure.
The guide G may be configured to actively traverse the multifilament yarn Y2, or the guide G may be omitted by changing the feeding position of the feed roller FR2.
When the guide G is actively traversed, the supply speed of the multifilament yarn Y2 can be set lower than when the guide G is not traversed.

[Brief explanation of drawings]

The figure is a schematic side view of an apparatus for continuously carrying out the method of the invention. Y1, Y2...Multifilament yarn, FR1,
FR2...Feed roller, G...Guide, S...
...False twisting spindle, DR...Take-up roller, N...
...Turbulent entanglement treatment nozzle, T1, T2...Tension guide, WR...Take-up roller, P...Confluence point.

Claims (1)

[Claims] 1. Pass the multifilament yarn through a false twisting means without heating, and pass another multifilament yarn from the side of the multifilament yarn that is being falsely twisted on the upstream side of the false twisting means until the confluence point is falsely twisted. The multifilament yarns are fed so as to traverse in the traveling direction of the multifilament yarns to intermittently cause triple or more windings, and both multifilament yarns in the doublet state after passing through the false twisting means are subjected to turbulent entanglement treatment. A method for manufacturing a design yarn, characterized by applying.