JPS6040529B2 - Manufacturing method of pongee yarn style composite yarn - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a novel method for manufacturing a pongee yarn-like composite yarn, and more specifically, by utilizing a negative pressure swirling vortex flow, a group of loops of filament yarn for the sheath portion is made into a yarn for the core portion. A novel method for obtaining a pongee yarn-like composite yarn that has a shape change in the longitudinal direction by changing the running speed of the core yarn when forming a composite yarn by entangling it around the circumferential surface of the yarn in a twisted state. The purpose is to provide a manufacturing method.

Many efforts have been made to provide woven and knitted fabrics with an attractive appearance and texture.

Incidentally, one example of such fabrics is known, such as shantung fabrics, which are woven using threads with partially different thicknesses and shapes. It has a rich, ornate, and sometimes rustic appearance and is in great demand. In the case of spun yarn, yarns with partially different thicknesses and shapes are generally called slub yarns or variable yarns, and the number of fibers in only certain portions of the yarn is changed during the spinning process. This can be achieved by making process changes to increase the number of times, but requires complex techniques or equipment.

In addition, when using filament yarns, so-called decorative yarns are produced by intertwisting with a design twisting machine, but it is difficult to make filament yarns with a fine twill, and moreover, complicated slabs and nep forming equipment are required. The sex is also low. There are also methods that use compressed fluid to force yarn agitation or loose entanglement, but the fluid device has a complicated structure and there are many problems in obtaining stable yarn quality. . In this way, the conventional method requires complicated equipment and expensive equipment costs, and the length, size, and frequency of knots can be freely controlled, especially for fine-grained yarns.

- It was extremely difficult to manufacture the product by molding it. The inventors of the present invention have made intensive studies to overcome the drawbacks of the conventional technology, and have arrived at the present invention, which utilizes a negative pressure swirling vortex flow. When forming a composite yarn by running the core yarn and oversupplying the sheath filament yarn from the air inlet hole provided in the tangential direction of the inner peripheral surface of the cylinder, the core yarn is While the running speed is changed intermittently, the filament yarn for the sheath is supplied so as to be located in the conical part of the hollow cone provided in the cylinder, and the hollow cone is formed by the action of the negative pressure swirling vortex at the tip of the hollow cone. A pongee thread-like composite characterized by forming a loop group with excess filament threads for the sheath part around the thread threads for the core part running inside the body, and at the same time intertwining them in a twisted state. How to make yarn. That is, in the method of the present invention, specifically, the sheath filament yarn is supplied at a constant speed from an air inflow hole provided in the tangential direction of the inner peripheral surface of the cylinder, which is brought into a negative pressure state by suction.

On the other hand, the core yarn runs inside the hollow cone while changing its passing speed without increasing the feeding speed of the sheath filament yarn, so that the sheath filament yarn becomes slack. If this occurs, a group of minute loops are formed at the tip of the hollow cone provided at the center of the cylinder by the action of the negative pressure swirling vortex, and at the same time, a group of small loops is formed by the action of the negative pressure swirling vortex. The loops are intertwined and coated in a twisted state on the circumferential surface of the core yarn to form knots of the composite yarn. By making the supply speed the same as that of the filament yarn, the rope portion of the composite yarn is formed and the desired pongee yarn-like composite yarn is obtained. Since the part supplied to the filament is tightly wound around the core yarn, there is no change in shape due to the ironing of the guide, etc., and there is no problem in passing through the subsequent process. It is possible to obtain an elegant pongee yarn-like composite yarn with excellent luster, and since it only effectively utilizes the high-speed negative pressure swirling vortex flow caused by suction, there is no mechanical wear and tear, and it is economically stable. It is possible to manufacture the desired pongee yarn-like composite yarn with high productivity. Next, the present invention will be explained in detail using illustrated examples.

FIG. 1 is a perspective view showing an example of manufacturing a pongee yarn-like composite yarn according to the present invention. , travels along the central axis of the swirling swirl tube 12 through the yarn introduction hole 5 of the swirl swirl tube 12 which is connected to the tension adjustment device 4 and the negative pressure source 13 .

Separately, the sheath filament yarn 7 unraveled from the yarn feeder 6 passes through a yarn guide 8, a traverse guide 9, and a delivery roller 10, and is provided in the tangential direction of the inner wall surface of the swirling swirl tube 12. The air is supplied into the swirling vortex tube 12 at a constant speed through the air inflow hole 11. As a result, due to the intermittent movement of the movable guide 14, which is a device for varying the running speed of the core yarn 2 in the swirl cylinder, the excessively supplied sheath filament yarn 7 is partially transferred to the core yarn 2. The pongee yarn-like composite yarn 15 is twisted and entangled on the circumferential surface of 2 by the action of a negative pressure swirling eddy current.
The cheese passes through the pull-out hole 16, the movable guide 14, and the nip roller 17, and then is rolled up as cheese 18 by a winding device. Therefore, to explain the formation of the pongee yarn-like composite yarn 15, FIG.

First, we will explain the generation of negative pressure swirling vortex flow.
The swirling vortex flow is obtained by bringing the swirling swirl tube 12 into a negative pressure state and causing air to flow into the swirl swirl tube 12 from the air inlet hole 11 provided in the rearward direction of the inner wall surface. Therefore, the movable guide 14 is
When the filament yarn 7 for the sheath section moves rapidly in the direction of The whirlpool tube 1 is guided by the suction airflow from the air inflow hole 11 with an excessive sound of ~1M.
2, a slack is generated within the swirling vortex tube, and in addition, a loop 20 is continuously generated due to the action of the negative pressure swirling vortex. At this time, the shape of the tip of the hollow cone 19 is a cone, so that the vortex flow in the swirling vortex tube 12 is caused to interlock with the vortex flow toward the tip of the hollow cone body 19 in a stable state. It has the effect of smoothly moving the loop 20 of the filament thread 7 for the sheath part to the tip of the hollow cone 19, and facilitates and stabilizes the twisting of the loop group of the filament thread 7 for the sheath part to the thread thread 2 for the core part. Forms knots. On the other hand, if the movable guide 14 is stationary or moving at low speed to the original position and the sheath filament yarn 7 is fed at the same speed as the core yarn 2, the sheath filament yarn 7 will loop. The formation and entanglement of the filament thread 7 for the sheath part and the thread thread 2 for the core part are not performed, and a flat thin thread part of the pongee thread-like composite thread is formed. Therefore, by changing the running speed of the core yarn 2 in the swirling swirl tube 12 and changing the excess supply amount of the sheath filament yarn 7 intermittently, the shape can be changed in the longitudinal direction. A pongee yarn-like composite yarn as illustrated in FIG. 3 is obtained. The rotating swirl cylinder running speed variable device for the core yarn 2, which is composed of the movable guide 14, is operated by electromagnetic or mechanical operation, and the sheath filament yarn 7
It is possible to rapidly change the amount of excess supply to the core yarn 2, and therefore, there is an advantage that a pongee yarn-like composite yarn with a large change in yarn diameter can be easily obtained. By appropriately selecting the moving time interval, moving distance, moving speed, etc. of the movable guide 14, it is possible to freely control the length, size, and frequency of knots, especially in fine twill yarns. It is possible to produce a pongee yarn-like composite yarn with excellent properties with good stability and high productivity. The present invention has the above configuration, and according to the present invention, a group of loops of saddle filament yarn is entangled in a twisted state on the circumferential surface of a core yarn using negative pressure swirling vortex flow. When forming a composite yarn by changing the running speed of the core yarn in the swirling vortex cylinder, the excess supply amount of the sheath filament yarn is changed intermittently. There are effects such as being able to easily obtain a pongee yarn-like composite yarn with excellent properties and morphological changes.

EXAMPLES Next, the present invention will be specifically explained with reference to Examples, but the present invention is not limited to these Examples.

Example 1 Using the apparatus shown in FIG. 1, the core yarn 2 was made of polyester filament yarn 15/3, and the tension of the yarn was adjusted using the tension adjustment device 4 for 50 minutes to create a warp-like composite yarn. 15 winding speed of 200/min, swirling vortex tube 12 by negative pressure source 13
The negative pressure inside was set to 150 m water column, while the polyester filament thread 5 and 6 was used for the filament thread 7 for the sheath.
Using a feed roller, one river trowel constant speed 220 m
/min into the swirling vortex tube 12.

In order to develop knots, the time interval during which the movable guide 14 moves in the direction of the nip roller 17 is randomly varied within the range of 2 to 1 current sand, the moving speed is 170/min, and the moving length is It was set as 0.1 skin. When a pongee yarn-like composite yarn was produced under these conditions, the desired pongee yarn-like composite yarn with excellent appearance could be obtained with good stability and high productivity. In addition, other manufacturing conditions, itonuki,
The yarn form is as described in Table 1 at the end. Next, weaving is carried out using polyester filament yarns of 7/3 as the warp and the above-mentioned pongee thread-like composite yarn as the striped yarn, with a warp density of 70/2.
．． When finished to 54 skin and striped thread density of 80 threads/2.54 skin, an elegant cloth obi with a refined appearance, luster, and texture almost the same as natural silk shantung was obtained.

Example 2 Using the apparatus shown in FIG. 1, the core yarn 2 was made of polyester filament yarn 15/3, and the tension of the yarn was adjusted by the tension adjustment device 4 to 502, pongee yarn-like composite yarn. The winding speed of the strip 15 is 100 m/min, and the swirling vortex tube 12 is controlled by the negative pressure source 13.
The internal negative pressure was set to 200 meters of water column, while the sheath filament thread 7 was made of acetate filament thread 5/2, and the feed roller 10 was used at a constant speed of 700 m/2.
was fed into the swirling vortex tube 12 in minutes.

In order to develop the joints, the time interval during which the movable guide 14 moves in the direction of the nip roller 17 was set to be constant at 5 seconds, the moving speed was set to 90 units/minute, and the moving length was set to 0.05 seconds. When a pongee yarn-like composite yarn was produced under these conditions, the desired pongee yarn-like composite yarn with excellent appearance could be obtained with good stability and high productivity. In addition, other manufacturing conditions, yarn quality, and yarn form are as described in Table 1. Next, the warp is woven using polyester filament yarns of 7 threads/3 threads and the weft is the pongee thread-like composite thread, with a warp density of 70 threads/2.54 threads and a weft density of 30 threads/2.54 threads.
When finished into arcs, an elegant cloth with a pattern in which the knots were evenly distributed and an excellent and unique appearance, luster, and texture was obtained.

Table 1

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an example of a state in which a pongee yarn-like composite yarn is manufactured by implementing the present invention, and Fig. 2 A and the opening show an example of the swirling vortex tube in Fig. 1. , A is a longitudinal sectional side view, FIG. 3 is an external view showing an example of a pongee yarn-like composite yarn obtained by the present invention. In the figure, 2 is a core yarn, 7 is a filament yarn for a sheath, 11 is an air inflow hole, 12 is a swirling swirl tube, 13 is a negative pressure source, 14 is a movable guide, and 15 is a pongee yarn-like composite yarn. shows. Sai'zuzai 3 fig.ne 2 fig.

Claims (1)

[Claims] 1. The core yarn is run in a cylinder that is brought into a negative pressure state by suction, and the sheath filament yarn is excessively supplied from the air inlet hole provided in the tangential direction of the inner peripheral surface of the cylinder to form a composite yarn. During forming, the running speed of the core thread is intermittently changed, and the sheath filament thread is fed so that it is located in the conical part of the hollow cone provided in the cylinder, and the filament thread for the sheath is fed so that it is located at the conical part of the hollow cone provided in the cylinder. By the action of the negative pressure swirling vortex flow, the excessively supplied sheath filament yarn is formed around the core yarn running inside the hollow cone to form a loop group, and at the same time, the loops are intermittent entangled in a twisted state. A method for producing a pongee yarn-like composite yarn, characterized by the following.