JPS599228A - Production of spun yarn with fluffs laid - Google Patents

Abstract

PURPOSE:A bundle of staple of fibers is drafted and fed in the form of fleece into a tapered path to lay down fluffs and a continuous yarn is made to spiral around the fleece surface, thus producing the titled spun yarn simply and efficiently without yarn breakage. CONSTITUTION:A bundle of staple fibers 1 is drafted in the part 2, fed into the rotary hollow spindle 3 equipped with the tapered part 12 to lay down fluffs, then, a continuous yarn 4 unwound from the outside of the spindle 3 is made to spiral around the fleece by forming its balloon on the straight part of the spindle, thus producing the objective spun yarn. The inner diameter at the yarn passing-through hollow. The resultant conjugated yarn with fluffs reduced 5 is passed through the delivery rollers 6 and wound up with the winder 7 to produce the objective spun yarn. The inner diameter of the yarn-through hole of the tapered part is preferably less than 10 times the maximum diameter of the spun yarn.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for fluffing a spun yarn. Spun yarns, especially composite yarns consisting of staples and continuous yarns, are manufactured using ring spinning machines, open-end spinning machines, covering spinning machines, etc., and have a yarn structure.

It is used for applications that are more suited to yarn characteristics.

On the other hand, methods such as gluing and adding a lot of twists have been mainly used for conventional fluffing. Furthermore, in the covering spinning method in which filament yarn is wound around a fleece, the purpose can be achieved by increasing the number of windings of the filament yarn. However, in the case of composite yarns for artificial fur, for example, it is necessary to maximize the characteristics of the twist-free staple fiber bundle, and the number of windings of the filament yarn must be adjusted to account for breakage and ironing of the composite yarn during weaving. It is necessary to use the minimum number of windings possible and to reduce fuzz. The general glue + 1 method can be considered for this.

It is difficult to fluff the composite yarns mixed with thick combs, and even if it were possible, it would cause major problems in subsequent processes and increase manufacturing costs.

The present inventor has researched and completed a method for fluffing composite yarns that is simple and efficient and does not cause any problems in subsequent processes. That is, in a spinning method in which a short fiber bundle is drafted and guided to a hollow spindle for two rotations, and a continuous yarn material wound around the outside of the hollow spindle is wound around a fleece, the drafted fleece is supplied to a member having a tapered angle. This is a method for producing a fluffed spun yarn, which is characterized in that the fleece is fluffed, and the surface of the fleece is wound with a continuous yarn.

The present invention will be explained in more detail below based on the drawings.

FIG. 1 is a schematic diagram of the method of the present invention for winding a continuous yarn at the same time as fluffing or a little later, and continuously producing a composite yarn with less fluff.

A short fiber bundle 1 is drafted by a draft part 2 and guided to a rotating hollow spindle B of the present invention. The hollow spear Vfiv (
7) The short fiber bundle drafted at a part of the taper is collected and 9 fluffs are piled up, and at the same time, the continuous yarn material 4 is wound thereon with a slight delay. The continuous yarn material 4 is wound around a short fiber bundle by ballooning. The thus produced composite yarn 5 with less fuzz passes through a delivery roller 6 and is wound up by a winder 7.

FIG. 2 is an enlarged sectional view of the hollow spindle during spinning of composite yarn. The fluff 11 of the short fiber bundle is collected by the tapered portion 12 of the hollow spindle, and at the same time, or with a slight delay, the continuous yarn 4 is wound onto the short fiber bundle and the fluff. The thus-produced composite yarn 14 with less fluff exits through the straight part 15 of the hollow spindle. The taper angle of the hollow spindle is suitably 1 to 70 degrees, preferably 5 to 45 degrees. Even if the angle is increased as the single fiber becomes thicker, the fluffing effect does not decrease. The appropriate length of the taper part is 1 to 100 m, and if it is longer or shorter than this, there is no effect of the taper, and preferably 6 to 301 m.
+ is good. However, the length of the straight part of the hollow spindle is suitably 1 to 600 mI, preferably 5 to 100 mI.
IIll is good. The hollow spindle of the present invention not only has a fluffing effect but also has the following effects. Namely.

There is no gap between the hollow spindle wall surface and the composite yarn at the part where the continuous yarn is wound around the fleece, so the ballooning of the fleece is small, and the fleece is easily twisted. Because of this, it also has the feature of reducing thread breakage and falling cotton. This spindle exhibits a great effect due to the combination of the tapered shape of the fleece introduction part and the shape that becomes narrower after the part where the continuous yarn is wound. For example, if the fleece introduction part is only tapered and the yarn through hole is thick, it will not be as effective as a conventional hollow spindle, and if the hollow spindle is only made thinner, there will be disadvantages such as bending of thick fibers on the surface of the fleece and shedding of cotton. However, the fleece gets clogged at the inlet of the hollow spindle and easily breaks.

FIG. 6 shows the hollow spindle of the present invention divided into a tapered part and two straight parts. Preferably, a portion of the taper is a fixed guide 22. In this case, it is necessary to reduce the distance between the tapered part and the straight part. If the gap is large, fluff will come out from there and the effect of the taper part will be lost. The appropriate distance is 01 to 2 mm. In this method, the taper part may be fixed and only the straight part may be rotated. The object of the present invention can be achieved by inserting the continuous yarn between the tapered part and the straight part.

In the present invention, the hollow spindle described above can be manufactured more easily. It is also possible to use a conventional hollow spindle and attach a fluffing device to its tip. Threading can be done easily using pneumatic suction from the hollow spindle outlet.

In the present invention, it is preferable that the inner diameter of the thread through hole of the member having a taper angle is 10 times or less the maximum diameter of the spun thread. This is because the thinner the thread through-hole is, the more effective it is for fluffing. Particularly preferably 2 to 3 times. If this level is set, the friction plate against the spindle will easily fit into the fleece, improving its movability. The combination of the shape of the fleece conductor 7 of the rotating hollow spindle and the thickness of the minimum inner diameter eζ determines the length, thickness, and length of the short fiber bundle.
It is sufficiently effective at any spinning count.

Although the spun yarn produced by the method of the present invention can be used for any purpose,
Preferably, after forming the fabric, the yarn form of one portion is destroyed and the fabric is removed.
1] Suitable for applications such as hair-dressing, such as artificial fur-like pile fabrics, velvets, moquettes, etc. because,
This is because even if single fibers of thick fineness are mixed, fluffing is sufficiently performed and a strong integrated composite yarn can be obtained.

Such yarns have good one-pass properties without derailment or snags even in high-order processing such as weaving, knitting, and weaving.

This will be explained below using examples.

Example 1 PBT (polybutylene terephthalate) 40d x 0m47 as short fiber for cutting, PBTl, 7dx20 69% as short fiber for cotton, and water-soluble PVA (
Polyvinyl alcohol) Staple 2dx Filter 8mm 14
% blended short fiber bundles were drafted as shown in Figure 1, with a taper angle of 30° and a length of the tip and root part I D m.
m, minimum inner diameter 2mm, straight length 120m
A fleece was introduced into a rotating hollow spindle, and a water-soluble PVA filament yarn 56D-18F was wound thereon (spinning count 15'', twist number 457 T/m + twist direction 2, spinning speed 14.2 m/m). min ). A good composite yarn with no yarn breakage, less fluff, and a smooth yarn surface with less fuzz was obtained.

Example 2 Polyester Steniful 1.5 d x 3Bm+n
Example 1 A short fiber bundle made by blending 65% and 35% rice cotton.
Draft in the same manner as above and set the taper angle to 100. Chee
Fleece was introduced into a rotating hollow spindle with a part length of 15 mm, a minimum inner diameter of 1.0 m, and a straight part length of 120 mm, and water-soluble PVA filament yarn 28D-9F was wound thereon (spinning count, io"", twist). number 747
T/m.

Winding direction Z, spinning speed 10.7 m/min). There was no yarn breakage and a good composite yarn with less fluff was obtained.

Example 6 20 pieces of PBT 30d x 100mm as short fibers for cutting, acrylic 2d x 70mm4 as short fibers for filling
0%, plus acrylic 5 d-x 102 mmV
60%.

A short fiber bundle blended with wool 6.110 was drafted in the same manner as in Example 1, with a chi-shi angle of 65°, a tapered part of 1 (minimum inner diameter of 15-2, straight part length of 12
A fleece was introduced into a rotating hollow spindle with a diameter of 0 mm, and a water-soluble PVA filament yarn 56D-18F was wound thereon (spinning count 1/i 6 , twist number 280 T/m, winding direction 2, spinning speed 21.5 m /min). A good composite yarn with less fluff was obtained without yarn breakage or cotton drop.

[Brief explanation of drawings]

FIG. 1 shows a process diagram of the method of the invention. FIG. 2 shows one embodiment of the present invention, and FIG. 6 shows another embodiment of the invention. 1: Short fiber bundle 2 Ni draft batt part filter 1 rotating hollow spindle 4: Continuous yarn 5: Composite yarn 11: Fluff 12: Taper part 22: Fixed guide

Claims (4)

[Claims] (1) In a spinning method in which a short fiber bundle is drafted and guided to a hollow spindle for 9 rotations, and the continuous yarn wound on the outside of the hollow spindle is wound around a fleece, the drafted fleece is A method for producing a fluffed spun yarn, which comprises supplying and fluffing the fleece, and winding the surface of the fleece with a continuous yarn. (2) The method for producing a fluffed spun yarn according to claim (1), wherein the member having a taper angle is an inlet of a hollow spindle. (3) The method for producing a fluffed spun yarn according to claim (1), wherein the member having a taper angle is a fixed guide. (4) The fluffed spun yarn according to claim (1), wherein the inner diameter of the yarn through hole of the member having a taper angle is 10 times or less the maximum diameter of the spun yarn. Production method.