JPS607727B2 - Manufacturing method of composite yarn - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing a composite yarn in which a continuous yarn is integrated on the surface of a spun yarn, particularly an open-end spun yarn, in a covering or lacquer-like manner.

A method of manufacturing covered yarn by supplying staple fibers and continuous yarn to a spinning device utilizing air and centrifugal force using a rotating paper yarn chamber has been proposed in Japanese Patent Publication No. 47-10260 and the like.

However, the methods described in these publications use a continuous yarn (filament) as a core yarn and aim to obtain a covered yarn in which a spun yarn consisting of staples is wound around the core yarn.

Therefore, there are restrictions on the method of supplying the continuous yarn and the type of yarn, and the coated yarn that can be obtained is also limited.

The purpose of the present invention is to obtain the following composite yarn, unlike the above-mentioned known examples. [1] The continuous yarn is twisted into a covering shape by twisting the spun yarn formed in the grade yarn chamber by the staple east, or the continuous yarn and the spun yarn are combined and twisted. Get a structured one.

(2) In particular, a plurality of continuous threads are fed at the same time, and the continuous threads are combined with the spun yarn in a form in which they are aligned with each other, or in a form in which one twists the other.

[3'Furthermore, when supplying a plurality of continuous yarns, the yarn feeding tension T2 (evening) is optimized, and the tension design between the continuous yarns is optimized. Comrade,
Also, the continuous thread material and the spun yarn are tightly integrated.

'4- To enable high-transparency spinning of the yarn structures of {11 to 31 above in a stable manner without the trouble of yarn breakage.

The purpose of the above is to supply the open twill-shaped staples to the wall of the rotary spinning chamber, reconcentrate them, and spin them into spun yarn using the spinning force T, (evening). , a composite yarn in which two or three or more continuous yarns are fed and the plurality of continuous yarns are tightly integrated on the surface of the spun yarn in a covering shape or a plied twist shape. In the manufacturing method, the yarn feeding tension (L) of each of the above-mentioned continuous yarns is 25.
This can be achieved by performing the process within the range of T, /T2>1.

In particular, the yarn feeding tension T2 of two or more continuous yarns
The object of the present invention can be achieved more effectively by feeding the yarn to the rotating paper yarn chamber in such a manner that the values are different within the range of 2 (evening) ≦ T2 ≦ 25 (evening), and further, In addition, in order to ensure that the yarn feeding tension of the continuous yarns differs from each other by 5 degrees or more, the continuous yarn supply pipe and the point of union of the spun yarn and the continuous yarn, which is determined by the position of this supply pipe, are ,
The object of the present invention can be most effectively achieved by installing it at a certain distance, preferably five or more legs, from the yarn discharge pipe, which will be described later.

To specifically explain the embodiment of the present invention with reference to the drawings, FIG. 1 shows a case where two continuous yarns b and c are supplied from supply pipes 5 and 6.

The short fiber bundle 1 is supplied from feed rollers 2 and 3 via a supply pipe 4 to a spinning chamber 8 as individual fibers 9 in an open twill state. The short fibers that constituted the short fibers are deposited on the largest diameter part of the weaving yarn chamber 8 and rebuilt as spun yarn a.A plurality of yarns b, The fibers c coalesce near the coalescence point 7 and are twisted on the surface of the spun yarn a in a covering form or in a combined twist form.Here, at the coalescence point 7, the insertion of the spun yarn a toward the maximum hook portion is inhibited. Therefore, the friction member 10
This gives a firmness and prevents the spun yarn a from breaking.
Composite yarn 11, which is a combination of continuous yarns b and c and spun yarn a, is pulled out downward from delivery rollers 12 and 13. Note that the supply pipes 5, 6, etc. are held by a member 14 that holds them. The present invention further has the following aspects.

That is, when supplying a plurality of continuous threads b and c from the supply pipes 5 and 6, at least one of the plurality of continuous threads b and c is supplied from the supply pipes 5 and 6.
The yarn feeding tension L of a continuous yarn material (for example, yarn material b) is set to 2
(Evening)≦T2≦25 (Evening), and furthermore, at least one of these plurality of threads is made to have a difference in tension from other continuous threads. Preferably, there should be a difference of 5 ta or more. To explain these matters using FIG. 2, suppose that the yarn feeding tensions of continuous yarns b and c are T2 and L2, respectively.
If both of them are made smaller than 2, and the yarn is fed in an overfeed manner, both continuous yarns b and c will generate sagging in the spinning chamber, expand in a loop shape, and approach the vicinity of the maximum diameter part. This inhibits the thread formation of spun yarn a and induces yarn breakage. In addition, the resulting yarn has loop-like continuous yarns that protrude extremely irregularly from the surface of the spun yarn, resulting in a poor quality yarn appearance. In the present invention, the tension of at least one of the plurality of continuous yarns is set to 2 Ta or more and 25 Ta or less, and even if the tension of the other continuous yarns becomes lower than this tension,
Since the spun yarn a is twisted while being combined with this, it is possible to form the yarn while keeping the sagging form of the low-tension continuous yarn constant. The body and the spun yarn a can be tightly combined. Note that the symbols indicating members in FIG. 2 are the same as those in FIG. 1. An example of the form of the composite yarn obtained by the present invention will be explained with reference to FIG. 3. FIG.
In the figure, two continuous threads b and c are twisted in a lined manner, and the spun yarn and the threads are extremely tightly combined. The opening in Figure 3 is a continuous yarn material 1571 in the spun yarn 18.
In particular, other spun yarns are used as the continuous yarns 15 and 16, and the spun yarn 15 is supplied at a low tension with a slight overfeed, and the other spun yarn 16 is supplied with a tension of 2 ta or more. This shows the case when supplied with In this case, the spun yarn 16 serves to tightly twist the spun yarn 18 together with the spun yarn 16. In Figure 3, these spun yarns 15
, 16, and 18 of the present invention, a continuous thread 17 is spun together and a twist is given in the opposite direction (the direction in which the composite yarn main body is unraveled) with a low twist number using a twisting machine. and
The loop-shaped portions 19 and 20 are formed to form a fancy thread. In addition, as the continuous yarn material used in the present invention, spun yarns, various filament yarns, various decorative yarns, silver threads, tape yarns, etc. can be used.

Further, the number of threads of the spun yarn a formed in the paper yarn chamber can be arbitrarily set from soft to strong, and is preferably determined according to various final product characteristics. Further, various types of yarns can be obtained by combining the composite yarn obtained according to the present invention with other yarns and subjecting the yarn to additional threading, unraveling, etc. Example A composite yarn was formed in the spinning manner shown in FIG.

The material is acrylic fiber “Trelon” as Staple East 1.
1. 21. respectively as mother and 38 side continuous yarns b and c. We supplied 1/4 meter (metric type) Banbo spun yarn. The conditions for paper publication are as follows. Spun count of spun yarn b 1/4 machine spinning yarn b coefficient of spun yarn b K: 3.5 Yarn feeding tension of spun yarn b L2 = log Yarn feeding tension of spun yarn c also = 1.5 Multi-spun yarn Tension difference between b and c L2-L, = 85 rotation speed of spinning chamber 3000. p. m. Spun yarn b, c and spun yarn a
Number of intertwisting with: about 730 times/2 The obtained composite yarn has two spun yarns b and c tightly combined on the surface of spun yarn a, and is burnt and twisted.
The texture of the yarn surface was extremely smooth and had a smooth texture.

It was suitable for spring/summer women's outerwear such as sweaters and blouses.
As an example of a comparative paper, the values of Ta and T2 in the embodiment shown in Figure 1 are
22-L. Regarding the case of <5 (evening),
The combined yarns b and c supplied as the continuous yarn component and the spun yarn a obtained by spinning in the grade yarn room form a composite yarn that is prone to slipping, and the continuous yarn component becomes Slab-like lumps were formed in the longitudinal direction of the yarn axis of the spun yarn, causing trouble in post-processes such as green weaving, and the final product did not have good surface quality. Brief explanation of the drawings FIGS. 1 and 2 are explanatory diagrams of thread paths showing embodiments of the present invention.

FIG. 3 is a side view showing the form of a composite yarn obtained by the present invention. a... Spun yarn, b, c... Continuous yarn, 1... Short fiber east, 2, 3... Feed o-
La, 5, 6...

.... Continuous yarn material supply pipe, 8...rotating yarn chamber "11
...Composite yarn. Figure 3 Figure 1 Figure 2

Claims (1)

[Scope of Claims] 1. A spread staple bundle is supplied to the inner wall of the rotating spinning chamber, refocused, and spun with a spinning force T_1 (g) to form a spun yarn. A plurality of continuous threads of two or three or more are fed to the spun yarn to form a composite yarn in which the plurality of continuous threads are tightly integrated on the surface of the spun yarn in a covering form or a plied form. A method for producing a composite yarn, characterized in that the yarn feeding of each of the continuous yarns described above is carried out at a yarn feeding tension (T_2) of 25 g or less and within a range of T_1/T_2>1. 2 Yarn feeding tension T_2 of 2 or 3 or more continuous yarns
2. The method according to claim 1, wherein the yarn is fed to the rotating spinning chamber in such a way that the values are different within the range of 2(g)≦T_2≦25(g). 3 Yarn feeding tension T_2 of two or more continuous yarns
3. The method according to claim 2, wherein the yarns are fed to the rotary spinning chamber such that the yarns differ from each other by 5 g or more. ′