JP5066068B2 - Covering yarn - Google Patents

Description

  The present invention relates to a covering yarn suitable for highly stretchable clothing such as pantyhose, tights, and socks, a manufacturing method of the covering yarn, a covering yarn manufacturing apparatus, and a highly stretchable clothing using the covering yarn, and particularly the same as DCY. The present invention relates to a covering yarn having a certain degree of durability and having good heat retention and good touch, a method for producing a covering yarn, an apparatus for producing a covering yarn, and a highly stretchable garment using the covering yarn.

  Conventionally, as a covering thread, a polyurethane elastic thread is used as a core, and a wound thread such as a nylon thread or a polyester thread is wound around the surface of the thread, and the wound thread is wound around the surface of the elastic thread. Covered yarn (SCY) and covered yarn (DCY) in which the winding direction of the upper winding and the lower winding is reversed in the outer circumference of the elastic yarn (see, for example, Patent Document 1).

  As shown in FIG. 4, the elastic yarn 2 unwound from the package 1 is supplied to the DCY 13 while the draft is given by the rotational difference between the (rotational speed) rewinding speed of the package 1 and the rotational speed of the draft roller 11. A wound thread 6 introduced into the spindle 4 of the spindle device 3 and unwound from the rotating bobbin 5 is wound around the outer periphery of the elastic thread 2. Next, the elastic yarn 2 is introduced into the spindle 8 of the second spindle device 7, and the wound yarn 10 unwound from the bobbin 9 rotating in the direction opposite to the bobbin 5 of the first spindle device 3 is further on the outer periphery of the elastic yarn 2. Wrapped. Next, it is manufactured by the procedure of being wound around the winding bobbin 14 via the traverser 12.

As shown in FIG. 5, the manufactured DCY 13 can be wound with the wound yarns 6 and 10 around the outer periphery of the elastic yarn 2 and is therefore more durable than the SCY, and the winding direction of the upper and lower windings is reversed. Since there is no twisting direction, there is an advantage that there is no need to prepare an S twisted yarn and a Z twisted yarn and knitting them alternately for each course even when knitting pantyhose or tights.
JP 2003-278043 A

  However, DCY is not sufficient in terms of heat retention, texture, and touch because it has poor bulkiness because the surface of the elastic yarn is doubly wound with a wound yarn.

  The present invention has been made in view of such a technical problem, and has the same durability as DCY, and has excellent heat retention, soft touch, soft touch, and production of covering yarn and covering yarn. It is an object of the present invention to provide a method, a covering yarn manufacturing apparatus, and a highly stretchable garment using the covering yarn.

In order to achieve the above object, the invention according to claim 1 is characterized in that two wound yarns made of synthetic fibers are arranged in the same direction on the outer periphery of the elastic yarn, and the properties of the two wound yarns , or the two A loop composed of an outer winding thread on the outer periphery of the elastic yarn when the elastic yarn is in an unstretched state by doublely tightening the winding timing by changing the properties of the winding yarn and the number of windings. The gist of the present invention is a covering yarn characterized by alternately forming loops of inner and inner winding yarns. In the covering yarn according to claim 1, the first winding yarn wound around the outer periphery of the elastic yarn of the two winding yarns is a nylon filament, and the second winding yarn wound around the outer periphery of the first winding yarn is nylon. Woolley, characterized in that the thickness of the first winding yarn and the thickness of the second winding yarn are the same.

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  In the covering yarn of the present invention, the covering yarn is in the same direction as the two wound yarns made of synthetic fibers on the outer periphery of the elastic yarn, and the thickness, property and number of windings of the two wound yarns. A loop made of an outer winding thread around the elastic thread when the elastic thread is in an unstretched state, and the elastic thread is unstretched. Since loops made of the inner winding are alternately formed, the coverage of the elastic yarn is increased, the durability is increased, and the loop made of the inner winding is increased by increasing the number of windings of the outer winding. Since the air gap is formed by filling the gaps with the outer wound yarns, the heat retention is excellent and the texture is soft and the touch is good.

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Hereinafter, the covering yarn of the present invention will be described in detail according to an embodiment shown in the drawings.

  As shown in FIG. 2, the covering yarn 34 of the present invention has two winding yarns 25, 30 made of synthetic fiber on the outer periphery of the elastic yarn 22 in the same direction, and the two winding yarns 25, 30 are arranged in the same direction. The winding timing is doubled and tightened. When the elastic yarn 22 is in an unstretched state, as shown in FIG. 3, loops 25 composed of the outer winding yarn 30 and the inner winding yarn are alternately formed around the elastic yarn 22. It has become. Hereinafter, the manufacturing process of the covering yarn 34 having such a structure will be described.

  As the elastic yarn 22 used as the core of the covering yarn 34 of the present invention, a polyurethane yarn or a rubber yarn can be used. The core of the covering yarn 34 of the present invention may be either a single core or a multiple core. The thickness of the elastic yarn 22 varies depending on the application, but is preferably 8 to 390 dtex. For example, in the case of covering yarn for pantyhose, 8-78 dtex is preferable, and in the case of covering yarn for tights, 11-78 dtex is preferable. In the case of the covering yarn for pantyhose or tights, it is more preferably 17 to 33 dtex, and most preferably 22 to 33 dtex. Moreover, in the case of the covering yarn for socks, 78-390 decitex is preferable. When the thickness of the elastic yarn 22 is less than 8 dtex, the strength is reduced, and therefore, yarn breakage is likely to occur during manufacture or knitting. When the thickness exceeds 390 dtex, the package replacement frequency increases. It will be. In the illustrated example, 22 dtex polyurethane yarn was used as the elastic yarn 22.

  FIG. 1 is a schematic view showing a covering yarn manufacturing apparatus of the present invention. As shown in FIG. 1, a package 21 is arranged at the lower part of the apparatus 50, and a single core or a multi-core elastic yarn 22 selected according to the application is wound around the package 21. Also, a delivery roller 32 is disposed on the upper part of the apparatus 50, and the elastic yarn 22 wound around the package 21 is configured so that the (rotation speed) rewind speed of the package 21 and the rotation speed of the delivery roller 32 are the same. While being drafted and stretched by the rotation difference, it is unwound from the package 21 and pulled out. The draft (elongation rate) given to the elastic yarn 22 is preferably 2.5 to 3.5 times the length of the original yarn, and optimally about 3 times. In the illustrated example, the stretch rate of the elastic yarn was tripled.

The elastic yarn 22 pulled out from the package 21 at a predetermined elongation rate is supplied in a stretched state to a hollow first spindle 23 located above the elastic yarn 22. A first winding thread 25 is wound around a yarn feeding bobbin 24 of the first spindle 23. Nylon (registered trademark ) can be used for the wound yarn 25. The thickness of the wound yarn 25 is preferably 8 to 110 dtex, more preferably 10 to 44 dtex. In the illustrated example, an 11 dtex nylon filament was used as the first wound yarn 25.

  The yarn feeding bobbin 24 attached to the first spindle 23 rewinds the first winding yarn 25 while rotating at high speed, and the first winding yarn 25 is wound around the outer periphery of the elastic yarn 22 under the snail guide 26. The winding number of the first winding thread 25 is preferably 350 to 3000 times / m. If the number of windings of the wound yarn 25 is less than 350 times / m, the yarn may be separated or the strength may be reduced. If it exceeds 3000 times / m, the yarn may be broken or the knitted fabric may be damaged. This is because there is a risk of drought. In the illustrated example, the number of windings of the first winding thread 25 is 2000 times / m.

Next, the elastic yarn 22 around which the first winding yarn 25 is wound is fed to a hollow second spindle 28 that is horizontally provided at an upper position of the first spindle 23 with a space therebetween. The second spindle 28 rotates in the same direction as the first spindle 23 and has a yarn supplying bobbin 29 around which the second wound yarn 30 is wound. Nylon (registered trademark ) can be used for the second winding thread 30 in the same manner as the first winding thread 25. The thickness of the wound yarn 30 is preferably 8 to 110 dtex, more preferably 10 to 44 dtex. The yarn supplying bobbin 29 attached to the second spindle 28 rewinds the second wound yarn 30 while rotating at a high speed, and the second wound yarn 30 is wound around the outer periphery of the elastic yarn 22 under the snail guide 31. The winding frequency of the wound yarn 30 is preferably 350 to 3000 times / m. If the number of windings of the wound yarn 30 is less than 350 times / m, the yarn may be separated or the strength may be reduced. If it exceeds 3000 times / m, the yarn may be broken or the knitted fabric may be damaged. This is because there is a risk of drought.

  In the illustrated example, the second winding thread 30 uses the same 11 dtex nylon filament as the first winding thread 25 as the second winding thread 30, but the second spindle 28 rotates faster than the first spindle 23. . For this reason, the second wound yarn 30 is wound in a state where the winding timing is shifted from the first wound yarn 25 wound around the outer periphery of the elastic yarn 22. That is, since the first winding yarn 25 and the second winding yarn 30 are wound around the outer periphery of the elastic yarn 22 in a state where the winding timing is shifted, when the elastic yarn 22 is in the non-stretched state, FIG. 2 and FIG. As shown in FIG. 3, the loop formed by the inner first winding thread 25 wound around the outer periphery of the elastic thread 22 is formed in the gap between the loops formed by the outer second winding thread 30. . As the number of windings of the first winding thread 25 and the second winding thread 30 that cause the above-described winding timing deviation, when the winding number of the first winding thread 25 is 2000 times / m, the second winding thread 30 It is desirable to increase the number of windings of the second winding thread 30 by 10% or more, such as setting the number of windings of the second winding thread 30 to 2200 times / m or more.

As another embodiment in a state in which the winding of the timing of the first winding yarn 25 second winding yarn 30 is shifted been wound on the outer periphery of the elastic yarn 22, the first winding yarn 25 nature of the second winding yarn 30 Using different synthetic fibers, the number of windings of the first winding thread 25 and the second winding thread 30 can be the same as or slightly increased from that of the first winding thread 25. As a reference example, when using 11 decitex nylon filament as the first winding thread 25 and using 15 decitex nylon filament as the second winding thread 30 and winding the first winding thread 25 at 2000 times / m, The number of windings of the second winding thread 30 is set to 2020 times / m . As an embodiment of the present invention, an 11 dtex nylon filament is used as the first winding yarn 25, an 11 dtex nylon wooly is used as the second winding yarn 30, and the winding number of the first winding yarn 25 is 2000 times / m. In this case, the winding timing of the first winding thread 25 and the second winding thread 30 can be shifted by setting the number of windings of the second winding thread 30 to 2020 times / m.

  Thus, the covering yarn 34 in which the first winding yarn 25 and the second winding yarn 30 are doubly wound around the outer periphery of the elastic yarn 22 is wound around the winding bobbin 35 via the traverser 33.

  The covering yarn manufacturing apparatus of the present invention is an existing SCY manufacturing machine, and has an advantage that a covering yarn can be manufactured by using two adjacent machines, and no new equipment is required. The manufacturing apparatus 50 shown in FIG. 1 uses a spindle having a lower package of one SCY manufacturing machine and a lower yarn feeding bobbin among two adjacent machines of the existing SCY manufacturing machine. The first spindle 23 having the yarn feeding bobbin 24 of the first winding yarn 25 is used, and the spindle having the upper yarn feeding bobbin of the other adjacent SCY manufacturing machine, the delivery roller, the traverser, and the winding bobbin are used. A second spindle 28 having a yarn feeding bobbin 29 for two winding yarns 30, a delivery roller 32, a traverser 33, and a winding bobbin 35, and an elastic yarn 22 from the first spindle 23 of one SCY manufacturing machine through a guide 27. The yarn is fed to the second spindle 28 of the other SCY manufacturing machine.

  Covering yarns obtained as described above, S twist yarns and Z twist yarns having different twisting directions are prepared, and these S twist yarns and Z twist yarns are knitted alternately in each course, so that pantyhose, tights High-stretch clothing such as socks can be manufactured.

In the covering yarn of the present invention, for example, while increasing the elongation rate, reducing the number of windings of the first winding yarn 25 and the second winding yarn 30 makes it easier to exit the loop. It can be freely changed within the range described in the range.

The schematic diagram which shows the manufacturing apparatus of the covering yarn of this invention. The schematic diagram which shows the covering thread | yarn of this invention. The schematic diagram which shows the state when the covering yarn of this invention is shown and an elastic yarn is made into an unstretched state. The schematic diagram which shows the manufacturing apparatus of the conventional covering yarn. The schematic diagram which shows the conventional covering thread | yarn.

Explanation of symbols

Package ... 21
Elastic thread ... 22
First spindle ... 23
First winding thread ... 25
Yarn feeding bobbin ... 24
Second spindle ... 28
Second winding thread ... 30
Yarn feeding bobbin ... 29
Deli Berry Roller ... 32
Traverser ... 33
Covering thread ... 34
Winding bobbin ... 35

Claims (1)

Two winding yarns made of synthetic fiber on the outer periphery of the elastic yarn in the same direction and changing the properties of the two winding yarns or the properties of the two winding yarns and the number of windings And tighten it twice.
Of the two wound yarns, the first wound yarn wound around the outer circumference of the elastic yarn is a nylon filament,
The second winding thread wound around the outer periphery of the first winding thread is a nylon wooly;
The thickness of the first winding thread and the thickness of the second winding thread are the same,
A covering yarn, wherein when the elastic yarn is in an unstretched state, a loop made of an outer winding yarn and a loop made of an inner winding yarn are alternately formed on the outer periphery of the elastic yarn.

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