JPS6297936A - Production of composite false twisted yarn - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of application in the industry) The present invention relates to a method for manufacturing a composite plate twisted yarn by intermittently winding the surface of a core yarn using a arranging machine.

(Prior Art) It has been known to coat a core yarn with an effect yarn using a false twisting machine to obtain a slab-like compound yarn69, and a number of manufacturing methods have been proposed.

The manufacturing method of these double yarns uses IzujL4 continuous yarn as the effect yarn, and the core yarn is entirely formed in the path part covered with a single layer of effect yarn and the slab part covered in an accumulated form. be.

Furthermore, Japanese Patent Publication No. 56-26028 discloses a manufacturing method in which the entire slab portion is formed and, at the same time, the effect system is completely cut so that the core yarn can be exposed on the surface of the yarn.

(Problem to be Solved by the Invention) When the core yarn is used as a continuous yarn full-effect yarn as described above, the entire surface of the core yarn is covered with the effect yarn, and the core yarn does not become apparent and the appearance effect is suppressed. It will happen. For example, when the core thread and the effect thread are stitched in different colors, the color of the effect thread is emphasized in terms of appearance, resulting in nine tones, making it difficult to create a different color effect. Furthermore, if the oversupply is reduced, the core yarn can be exposed, but the result is a so-called heathered yarn appearance, which is far from the slab-like appearance.

Japanese Unexamined Patent Publication No. 56-26028 discloses a method for producing a nep yarn in which the effect yarn is intermittently cut during stretching and false twisting, and has a section made up only of the core yarn. When the overfeeding rate of the thread is small, the winding part becomes small and becomes a so-called nip-like shape with poor appearance and effect. Although it is possible to form a long wrapped portion, it is difficult to arbitrarily change the frequency of occurrence of the wrapped portion or the length of the wrapped portion.

The present invention aims to solve all of these problems.

(Means for solving all the problems) The present invention cuts the effect yarn from the side in the twisted region of the thermoplastic platform fiber multifilament that is being false twisted, and aligns the constituent fibers at the cut ends in a constant state. The gist of this paper is a method for producing composite plate twisted yarn.

Hereinafter, the manufacturing method of the composite plate twisted yarn of the present invention will be explained in detail with reference to all the drawings.

FIG. 1 is a schematic diagram showing an example of a false twisting device used in the manufacturing method of the present invention.
3) is a magnetic tensor, (4] is a core thread guide, (5)
) is a heater, (6) is a false twisting spindle, (7) is a delivery roller, (8) and (9) are air nozzles, (10
) is the cutter, and (1,1) is the entire tensor.

The core yarn (1) is fed with the tension adjusted by a magnetic tensor (3), and is formed between the false twist spindle (6) and the core yarn guide (4J) through the core yarn guide (4). It is heated in the twisting area, heat-fixed with the heater (5), and untwisted when it has completely passed the false-twisting spindle (6).
It is rolled up via rollers (7).

- Ten thousand, air nozzle (8) with a propulsion effect on the effect yarn (2)
) and (9), it reaches the twisting region of the core yarn and is wound around the core yarn (1). At this time, the effect yarn (2) is not actively fed but is fed with a slight yarn feeding tension. Therefore, the core yarn (1) is irrigated in one layer. Core thread (
The cutter (10) is operated in the direction of the arrow i at an arbitrary time interval after the winding of the effect yarn (2) begins to wrap around the effect yarn (2). The cutter (10) is a tensor (11
), and when the cutter 410"l operates and the effect thread (2) is cut, the tensor (11) cuts the effect thread (
2) Fully grasp and stop the progress of the uncut effect yarn (2). When the cutter (10) is in the open state, the gripping state of the effect thread (2) by the tensor (11) is also released, and the effect thread (2) moves forward again. By repeating this process, the effect yarn (2) is intermittently supplied to the double-core yarn (1) to obtain a composite yarn in a flat baked state. The cutter (10) and tensor (11) may be operated using any known operating means, and by operating them at arbitrary intervals as necessary, a composite yarn in a desired winding configuration can be obtained.

The air nozzles (8) and (9) are used to apply propulsive force to the core thread (2), and although not shown, they are used to apply propulsive force to the core thread (2).
] A nozzle having a mechanism that generates propulsion Rk in the direction of movement is used.

The air nozzles (8) and (9) in Fig. 1 also have the role of holding the cut effect yarn, and as shown in Fig. 1, the air nozzles (8) and (9) ), the cut effect yarn (2) is smoothly supplied to the twisted area of the core yarn (1) by the driving force of the air nozzle (9), and is cut. At the same time, the effect yarn end whose supply has been stopped due to the operation of the tensor (11) is transferred to the air nozzle (8).
) is held in the V air nozzle (8) by the propulsive force of the air nozzle (8), and is smoothly re-supplied with the release of the grip of the tensor (11).
Ru.

In addition, in Figure 1, the effect yarn (2) is supplied by the core yarn (1).
Although the material is supplied from a direction perpendicular to the surface, it is of course possible to supply the material at an acute angle.

FIG. 2 is a schematic diagram of an apparatus used in the manufacturing method when the effect yarn (2) is completely intermittently supplied to the core yarn (1) shown in FIG. The presser yarn (12) is continuously fed from an actively driven feed roller (13) through an air nozzle (9) to the twisted area of the core yarn (1), and is then cut into a nL effect yarn (2). ] is supplied with n, core thread (
1) While winding the entire surface, the effect yarn (2) wound around the core yarn (1) is further wound, and the floating yarn ends at both ends of the effect yarn (2) are wound to give a uniform yarn appearance.

The feeding speed of the presser yarn (12) is 0 to 3 with respect to the core yarn (1).
It is preferable to overfeed in the range of 0. If the overfeed amount is too large, the winding will become weak and the pressing effect will be insufficient, and process passability will also be affected.

The yarn used in the core yarn of the present invention may be a multifilament made of thermoplastic synthetic fiber that can be subjected to false twisting. In addition to thermoplastic fibers, non-thermoplastic fibers and natural fibers may be used as the effect yarn, and not only filaments but also spun yarns can be used, but it is preferable to use coatable yarns. In the present invention, the state in which the constituent fibers at the cut end of the effect yarn are completely destroyed when supplying the effect yarn to the core yarn means that no special measures such as opening are taken on the effect yarn after cutting with a cutter, and Disturbance during transport to the joining point with the thread! 'L is not excluded.

In addition, the air nozzles (8) and (9) are for transporting the effect yarn (2) to the joining point with the core yarn (1) as mentioned above, and have a shape that imparts a propulsive force. Things are used, but
One that generates a swirling flow is not preferable because it makes the transfer amount of the effect yarn (2) unstable.

In addition, it has been found that air pressure effectively wraps the yarn (2) when there is a propulsion force capable of transporting it, and in particular, the air pressure of the air nozzle (9) is 9/1 to 1 to 3. eWI” range is preferred.

(Example) Hereinafter, the present invention will be specifically explained with reference to examples.
f. The effect yarn was a cationically dyeable polyester multifilament l-75d/24f'i containing penta-sodium sulfoisophthalate [ffi as a copolymerization component. Manufactured.

False twist spindle rotation speed 15X 10'r, p1m
False twist number 2500T/M (Z twist) False twist heater temperature 180℃ Core yarn supply tension 10 Effect yarn supply tension 5t Nozzle (8) air pressure 1.0 TK97
cm” Air pressure of nozzle (9) 2.5 K9
7cm” cutter (10) and tensor (11) operating time 10 seconds cutter (10) and tensor (11) opening time [l
The A7 thus obtained was dyed with f'L'al-yellow disperse dye and black cationic dye for the core yarn and effect yarn, respectively, resulting in an effect yarn with a length of about 20 crn. Example 2 Polyester multifilament 3 od /
The core yarn was supplied from the nozzle (9) shown in the red diagram to the twisting area of the core yarn at an overfeed rate of 20 mm. All other false-twisted composite yarns were manufactured under the same conditions as in Example 1.

The obtained yarn is wound with a presser thread and the end of the effect yarn is wrapped with a presser thread. Made of false twisted composite yarn.

(Effects of the Invention) In the method for producing the false twisted composite yarn of the present invention, the entire length of the effect yarn can be set as required, without covering the entire core yarn.
It is possible to rupture only the necessary portions, and a composite yarn with excellent core-sheath contrast can be obtained. In addition, in the present invention, the core yarn is supplied while cutting the entire effect system, and the winding is unified, so the boundary between the irrigation area and the core yarn area becomes clear.
If the core yarn, effect yarn, and ′ have different colors, the result will be a composite yarn with a flagpole-like appearance. Furthermore, since it is wound around the core yarn in a flat shape with a small oversupply, the process passability is immediately improved to the sixth order.

Furthermore, when a presser yarn is used, the entire composite yarn is further coated and wound, and the integration of the n-effect yarn and the core yarn becomes more reliable, which has great effects.

[Brief explanation of drawings]

FIGS. 1 and 2 are schematic diagrams showing one example of a false twisting device used in the method for producing a false twisted composite yarn of the present invention. 1 Core yarn 2 Effect yarn 3 Magnetic tensor 4 Core yarn guide 5 Heater 6 False twist spindle 7 Delivery roller 8.9 Hot air nozzle 10 Cutter 11 Tenser 12 Presser yarn 13 Feed roller Watch applicant
Toshio Yoshizawa, Patent Attorney, Mitsubishi Rayon Closed Company Representative! ◆ + 1 figure

Claims (1)

[Claims] 1. The method is characterized by supplying the effect yarn to the twisting region of the thermoplastic synthetic fiber multifilament that is being false-twisted while cutting it from the side while aligning the constituent fibers at the cut ends. A manufacturing method for composite plate twisted yarn. 2. A method for producing a composite plate twisted yarn according to claim 1, wherein the cut effect yarn is supplied together with a presser yarn.