JP2003278043A - Covered yarn - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a covered yarn having durability, converging properties, moderate rigidity, etc. <P>SOLUTION: The covered yarn 1 is formed by winding up a core 2 composed of a spun yarn or a fiber bundle with winding yarns 3a and 3b composed of two monofilaments in the opposite directions at a nearly prescribed interval so as to cross the winding yarns 3a and 3b. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a covering yarn in which fibers are wound around a core yarn.

[0002]

2. Description of the Related Art For example, a single covered yarn (SCY) in which nylon yarn is wound around a polyurethane elastic yarn, or a double covered yarn (DC) is wound in double.
Y) is generally called covering thread, and has been widely used for shorts, pantyhose and the like.
These SCY and DCY are covered in order to improve the easiness of weaving / knitting, texture, and texture.

[0003]

On the other hand, spun yarns having a large diameter have been used consistently for piles of mops and dust control mats, but these have durability, dust retention, moderate rigidity, and fiber At present, there is no one that is functionally satisfactory in terms of the consistent focusing property. Further, there is a spun yarn in which fibers having a low melting point are mixed and melted to improve the converging property, but when all the fibers are completely joined, the characteristics of the spun yarn are lost and If they are completely joined together, there is a problem that the focusing property is insufficient and they tend to come apart.

[0004] Therefore, an object of the present invention is to provide a yarn having the above-mentioned durability, focusing property, and appropriate rigidity by covering with a special structure.

[0005]

In order to solve the above problems, according to the present invention, a core made of spun yarn or a fiber bundle is wound at a substantially constant winding interval so that at least two winding yarns made of monofilaments intersect each other. So I fastened it in the opposite direction. It is preferable to heat set the monofilaments, and it is preferable to use the low melting point monofilaments and fuse the monofilaments together at the intersecting points.

The winding interval is approximately 100 times expressed by the number of twists /
m ~ 500 times / m is good, and the thickness of the core is about 1000
~ 10,000 denier, the thickness of the winding thread is about 100 ~ 20
About 00 denier is preferable.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to the accompanying drawings. As shown in FIG. 1, a covering yarn 1 according to the present invention has two winding yarns 3a and 3b at a substantially constant winding interval (pitch) around a core 2, one of which is S winding and the other of which is Z winding. The core 2 is wound so as to intersect with each other, and the core 2 is tightened.

The core 2 is made of cotton, rayon, nylon,
Consisting of spun yarn (including blended yarn) or fiber bundle of natural or synthetic fibers such as polyester, acrylic, etc., thickness is about 10
00 denier to 10,000 denier is preferred.

The winding threads 3a and 3b are made of monofilament such as nylon, polypropylene and polyester, and preferably have a thickness of about 100 denier to 2000 denier. Further, the monofilament may have a two-layer structure in which a sheath 3d made of a low melting point synthetic resin is provided on the outer periphery of the core 3c as shown in FIG. The number of twists (number of turns) is about 1
00 times / m (meter) to 500 times / m is preferable.

A method of manufacturing the covering yarn 1 as described above will be described. FIG. 3 shows a general spindle device 10 for producing covering yarns. As shown in the figure, the bearings 8 and 9 attached to the fixed support portion 4 rotatably support the hollow spindle 5.
A bobbin 7 (so-called H bobbin) is attached to the so as to rotate together with the spindle. This spindle 5
The core 2 is supplied through the center of the core. On the other hand, the winding thread 3a is wound around the core 2 while being unwound from the bobbin 7 which is rotationally driven by the belt 6.

Two spindle devices 10 as described above are arranged in series as shown in FIG. 4, and a package 11 around the core 2 is arranged on the supply end side. Then, if necessary, the heating zone 20 is installed on the discharge end side. The heating zone 20 may be anything such as a steam heater or an infrared heater.

The core 2 which has been unwound from the package 11 is introduced into the spindle 5 of the first spindle device 10 and unwound from the rotating H bobbin 7 to form the wound yarn 3a.
Is wound around the core 2. When this is supplied to the second spindle device 10, the winding thread 3b unwound from the rotating H bobbin 7 is further wound around the outer periphery of the core 2.
At this time, the second spindle device 10 is rotated in the opposite direction to the first spindle device 10. This covering thread 1
The wound yarns 3a and 3b made of a monofilament are heated in the heating zone 20 and shrink and heat set. As a result, it is possible to prevent the twist of the winding threads 3a and 3b from returning. The heating temperature is about 100 to 160 ° C. Further, when a monofilament having a low melting point outer layer as shown in FIG. 2 is used, both can be fused at the intersection of the winding threads 3a and 3b, and depending on the material of the core 2, the winding thread 3a, 3b can be fused to the outer periphery of the core 2, and the integrity of the winding threads 3a and 3b and the core 2 can be improved. In the figure, reference numeral 30 is a traverser, 3
1 is a winding bobbin.

[0013]

According to the present invention, as described above, since the spun yarn or the fiber bundle having the relatively bulge is wound with the at least two monofilaments having the twists in the opposite directions at a proper interval, the fluff is formed. It has high durability and moderate rigidity, and since the surface irregularities wound by the monofilament become large, surface covering is high, and a covering thread with good friction and retention of dust etc. can be obtained. By utilizing such many excellent functions, it can be applied to a wide range of applications such as binding of piles, mops, and laces of dust control mats.

In addition, it is difficult to dissociate by heat setting, and when the monofilaments are fused together,
The focusing property of the core can be further enhanced.

[Brief description of drawings]

FIG. 1 is an enlarged front view showing an example of a covering thread of the present invention.

FIG. 2 is a cross-sectional view showing an example of a monofilament.

FIG. 3 is a front view showing a covering yarn winding process.

FIG. 4 is a schematic view showing an example of a manufacturing process of a covering yarn.

[Explanation of symbols]

1 covering thread 2 cores 3a, 3b winding thread 3c core 3d sheath 4 Support 5 spindles 6 belts 7 bobbins 8, 9 bearing 10 Spindle device 11 packages 20 heating zones 30 Traverser 31 winding bobbin

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 4L036 MA04 MA34 MA35 MA39 PA17                       PA21 UA08

Claims (5)

[Claims] 1. A covering yarn in which a core made of spun yarn or a fiber bundle is wound in opposite directions at approximately constant winding intervals so that at least two winding yarns made of monofilaments intersect each other. 2. The covering yarn according to claim 1, wherein the monofilament is heat set. 3. The covering yarn according to claim 1, wherein at least the outer periphery of the monofilament is made of a low melting point synthetic resin, and the monofilaments are fused to each other at intersecting points. 4. The covering yarn according to claim 1, wherein the winding interval is approximately 100 times / m to 500 times / m in terms of the number of twists. 5. The core has a thickness of about 1000 to 1000.
The covering yarn according to any one of claims 1 to 4, wherein the covering yarn has a denier of 0 and the thickness of the wound yarn is about 100 to 2000 denier.