JP2010133069A - Covered yarn, method and apparatus for producing the same, and high-stretch clothing using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a covered yarn soft in touch feeling, good in thermal insulation and good in skin touch, to provide a method and an apparatus for producing the same, and to provide high-stretch clothing using the same. <P>SOLUTION: The covered yarn is such that: a force-twisted appending yarn of synthetic fibers is put around the outer circumference of an elastic yarn 32 extended to a predetermined extension rate; in this condition the elastic yarn 32 and the appending yarn are seamed by a wrapping yarn of synthetic fiber; when the elastic yarn 32 is made nonextended, seamed portions 45 made of the wrapping yarn and kinked fluff portions 46 made of the appending yarn are formed around the outer circumference of the elastic yarn 32. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a covering yarn suitable for highly stretchable clothing such as pantyhose, tights, and socks, a method for producing a covering yarn, a covering yarn manufacturing apparatus, and a highly stretchable clothing using the covering yarn, and particularly has a soft texture. The present invention relates to a covering yarn having good heat retention and touch, a method for producing a covering yarn, a covering yarn producing apparatus, 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 SCY 13 is provided with the elastic yarn 2 unwound from the package 1 while being drafted by the rotational difference between the (revolution speed) rewind speed of the package 1 and the rotation speed of the delivery roller 11. The wound thread 6 introduced into the spindle 4 of the one-spindle device 3 and unwound from the rotating bobbin 5 is wound around the outer periphery of the elastic thread 2. Subsequently, it is manufactured by the procedure of being wound around the winding bobbin 14 via the delivery roller 12.

  On the other hand, as shown in FIG. 6, the DCY 13 ′ is an elastic yarn that is rewound from the package 1 while being drafted by the rotational difference between the (revolution speed) rewind speed of the package 1 and the rotation speed of the delivery roller 11. 2 is introduced into the spindle 4 of the first spindle device 3, and the wound thread 6 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 SCY 13 has a higher durability than the elastic yarn 2 alone because the wound yarn 6 is wound around the outer periphery of the elastic yarn 2. On the other hand, as shown in FIG. 7, the DCY 13 'is more durable than the SCY 13 because the wound yarns 6 and 10 are wound around the outer periphery of the elastic yarn 2, and the winding directions of the upper and lower windings are 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.

  However, these SCY13 and DCY13 'are both unsatisfactory in terms of heat retention, texture, and touch because the outer periphery of the elastic yarn is wound with a single or double winding thread, so that the bulkiness is poor.

Thus, a covering yarn that has improved such problems, is excellent in bulkiness, and has a soft texture has been proposed (for example, see Patent Document 2). As shown in FIG. 8, the covering yarn 28 is fed with the elastic yarn 22 rewound while being drafted from the package 21 together with the splicing yarn 23 made of synthetic fiber such as nylon being drawn together. In this state, the elastic yarn 22 and the splicing yarn 23 pass through the spindle 25 of the spindle device, and the winding yarn 26 rewound from the rotating bobbin 26 is wound around the outer circumferences of both the yarns 22 and 23, via the traverser 27. Manufactured in the procedure of being wound around the winding bobbin 29.
JP 2003-278043 A Japanese Patent Publication No. 60-54412

  In the covering yarn 28 described in Patent Document 2, as shown in FIG. 9, when the elastic yarn 21 is reduced in a straight line when in the non-stretched state, the splicing yarn 23 that cannot be shrunk around the elastic yarn 21 forms a loop. The winding thread 26 is tightened in a form that presses down the loop of 23, and the loop of the splicing thread 23 pressed by the winding thread 26 although it looks like a thread having an excellent bulkiness and a soft texture from its outer shape. Since it has no waist and does not become fluffy, an air layer cannot be formed, and sufficient heat retention, soft texture, and touch have not been obtained.

  The present invention has been made in view of such circumstances, and has a soft texture, heat retaining property, good touching yarn, a method for producing a covering yarn, a covering yarn producing apparatus, and high stretchability using the covering yarn. The purpose is to provide clothing.

  In order to achieve the above object, the invention described in claim 1 is characterized in that a spliced yarn made of a synthetic fiber that is forcibly twisted is attached to the outer periphery of the elastic yarn stretched to a predetermined elongation rate. When the spliced yarn is wound with a synthetic yarn, and when the elastic yarn is in an unstretched state, the elastic yarn is wound around the elastic yarn and a twisted fluffy portion made of the spliced yarn. The gist of the covering yarn is characterized in that

  According to the invention of claim 2, the twist is wound by rewinding the spun yarn while rotating the yarn feeding bobbin of the first spindle on which the spliced yarn made of synthetic fiber is rotated at a high speed, and is stretched to a predetermined elongation rate. When the elastic yarn is passed through the second spindle, the splicing yarn is fed so as to follow the outer periphery of the elastic yarn, and then the synthetic yarn is fed from the yarn feeding bobbin of the second spindle around the elastic yarn and the splicing yarn. The gist of the manufacturing method of the covering yarn is to wind the elastic yarn and the splicing yarn by winding the wound yarn.

  The invention according to claim 3 has a yarn supplying bobbin in which a spliced yarn made of synthetic fiber is wound and rotated at a high speed, and twisting is performed by rewinding the spliced yarn while rotating the yarn supplying bobbin at a high speed. A first spindle to be inserted, and a yarn feeding bobbin made of synthetic fiber, which is positioned obliquely above the first spindle, and is twisted around the outer circumference of the elastic yarn drawn at a predetermined elongation rate A second spindle for passing the attached yarn and attaching the elastic yarn and the additional yarn by winding the wound yarn around the elastic yarn and the outer periphery of the additional yarn. The gist of the apparatus for producing covering yarn is as follows.

  The invention according to claim 4 is the covering yarn according to claim 1, which is obtained by preparing S twist yarns and Z twist yarns having different twist directions, and alternately knitting these S twist yarns and Z twist yarns for each course. The gist was elastic clothing.

  In the covering yarn of the present invention, a spliced yarn made of a synthetic fiber that is forcibly twisted is attached to the outer periphery of the elastic yarn stretched to a predetermined elongation rate. In this state, the elastic yarn and the spliced yarn are synthetic fibers. When the elastic yarn is in an unstretched state, a wound portion made of a wound yarn and a twisted fluffy portion made of a spliced yarn are formed on the outer periphery of the elastic yarn, Since the twisted and protruded fluff portion forms an air layer, it is excellent in heat retaining properties and has a soft texture and a good touch.

  Moreover, in the manufacturing method and the manufacturing apparatus of the covering yarn of the present invention, it is an existing SCY manufacturing machine, and the covering yarn according to claim 1 can be manufactured by using two adjacent machines, There is an advantage that no new equipment is required.

  Hereinafter, a covering yarn of the present invention, a covering yarn manufacturing method, a covering yarn manufacturing apparatus, and a highly stretchable garment using the covering yarn will be described in detail according to an embodiment shown in the drawings.

  As shown in FIG. 2, the covering yarn 35 of the present invention is provided with a splicing yarn 35 made of a synthetic fiber that is forcibly twisted on the outer periphery of an elastic yarn 32 stretched to a predetermined elongation rate. When the yarn 32 and the splicing yarn 35 are wound together by a winding yarn 40 made of synthetic fiber, and the elastic yarn 32 is in an unstretched state, a winding fastening portion 45 made of a winding yarn is attached to the outer periphery of the elastic yarn 32. A twisted fluff-like portion 46 made of a thread is formed. Hereinafter, the manufacturing process of the covering yarn 43 having such a structure will be described.

  As the elastic yarn 32 used as the core of the covering yarn 43 of the present invention, a polyurethane yarn or a rubber yarn can be used. The core of the covering yarn 43 of the present invention may be either a single core or a multiple core. The thickness of the elastic yarn 32 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. If the thickness of the elastic yarn 32 is less than 8 dtex, the strength is reduced, and therefore, yarn breakage is likely to occur during manufacturing or knitting, and if it 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 31 is disposed at the lower part of the apparatus 50, and a single-core or multi-core elastic yarn 32 selected according to the application is wound around the package 31. Also, a delivery roller 41 is disposed on the upper part of the device 50, and the elastic yarn 32 wound around the package 31 has a relationship between the (revolution number) rewinding speed of the package 31 and the rotation number of the delivery roller 41. While being drafted and stretched by the rotation difference, it is unwound from the package 31 and pulled out. The draft (elongation rate) given to the elastic yarn 32 is preferably 2.5 to 3.5 times the length of the original yarn, and most preferably about 3 times. In the illustrated example, the stretch rate of the elastic yarn was tripled.

  The elastic yarn 32 pulled out from the package 31 at a predetermined elongation rate is fed in a stretched state to the second spindle 38 of the hollow second spindle device 37 located above the elastic yarn 32. On the other hand, a first spindle device 33 is provided horizontally at a position obliquely below the second spindle device 37. The first spindle device 33 has a yarn supplying bobbin 34 for the splicing yarn 35. Synthetic fibers such as nylon (registered trademark), polypropylene, and polyester can be used for the splicing yarn 35 wound around the yarn feeding bobbin 34. The thickness of the splicing yarn 35 is preferably 8 to 110 dtex, more preferably 10 to 44 dtex. In the illustrated example, 11 dtex nylon filament was used. The yarn feeding bobbin 34 attached to the first spindle device 33 is rewound with the spliced yarn 35 while rotating at a high speed, so that the rewound spliced yarn 35 is twisted.

  The number of rotations of the supply bobbin 34 when the splicing yarn 35 is pulled up 1 m by the delivery roller 41 is not particularly limited, but is preferably 1000 times / m to 3000 times / m. When the rotation speed of the supply bobbin 34 of the splicing yarn 35 is less than the above-mentioned 1000 times / m, twisting is less likely to occur when the elastic yarn is brought into a non-stretched state after being wound with the winding yarn described later, There is a risk of not becoming fluffy. On the other hand, if it exceeds 3000 times / m, there is a risk of yarn breakage or wrinkles on the knitted fabric. In the illustrated example, the rotation speed of the supply bobbin 34 of the splicing yarn 35 is set to 2000 times / m.

  The twisted splicing yarn 35 is fed through the guide 36 so as to follow the outer periphery of the elastic yarn 32 passing through the second spindle 38 of the second spindle device 37. The second spindle 38 of the second spindle device 37 has a yarn supplying bobbin 39 around which the wound yarn 40 is wound, and rotates in the same direction as the first spindle device 33.

  Synthetic fibers such as nylon (registered trademark), polypropylene, and polyester can be used for the wound yarn 40 wound around the yarn feeding bobbin 39, as with the splicing yarn 35. The thickness of the wound yarn 40 is preferably 8 to 110 dtex, more preferably 10 to 44 dtex. The yarn feeding bobbin 39 attached to the second spindle 38 rewinds the wound yarn 43 while rotating at a high speed, and the wound yarn 40 is wound around the outer periphery of the elastic yarn 32 and the twisted splicing yarn 35 under the snail guide 47. Tighten these. In the illustrated example, an 11 dtex nylon filament was used as the wound yarn 40.

  As described above, the wound yarn 40 is formed by winding the elastic yarn 32 and the splicing yarn 35 to form the tightening portion 45 as shown in FIG. The fluffy portion 46 is reduced, and the planned texture, heat retention, and touch cannot be ensured. In the covering yarn 43 of the present invention, in order to increase the twisted fluff-like portion 46 and to ensure the expected texture, heat retention, and touch, the preferred number of windings of the wound yarn 40 is 350 to 2000 times / m. If the number of windings of the winding thread 30 is less than 350 / m, there is a risk of causing yarn separation or a decrease in strength. If it exceeds 2000 turns / m, it is impossible to ensure the expected texture, heat retention, and touch. There is a fear. The number of windings of the wound yarn 40 is more preferably 1000-1500 times / m. In the illustrated example, the winding frequency of the winding yarn 40 is 1400 times / m.

  In addition, in the covering yarn 43 of the present invention, in order to increase the twisted fluff-like portion 46 and to ensure the expected texture, heat retention, and touch, in addition to adjusting the number of windings of the winding yarn 40, the elastic yarn 32 A method of increasing the draft (elongation rate) can also be adopted. A preferable elongation ratio is 2 to 5 times the length of the original yarn, and more preferably 2.5 to 3.5 times. In the illustrated example, the stretch rate of the elastic yarn was tripled.

  Thus, the covering yarn 43 in which the winding yarn 40 is wound around the outer periphery of the elastic yarn 32 and the splicing yarn 35 is wound around the winding bobbin 44 via the traverser 42.

  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 includes a lower package of one SCY manufacturing machine, a spindle having an upper yarn feeding bobbin, a delivery roller, a traverser, a winding of two adjacent SCY manufacturing machines. Bobbins are used as a second spindle device 37, second spindle 38, delivery roller 41, traverser 42, and take-up bobbin 44 having a package 31, a yarn feeding bobbin 39 for winding yarn 40, and the other adjacent SCY manufacturing. A spindle having a yarn feeding bobbin on the lower side of the machine is used as a first spindle device 33 having a yarn feeding bobbin 34 for the splicing yarn 35, and from the yarn feeding bobbin 34 of the first spindle device 33 of the other DSY manufacturing machine. The second spindle device 37 of the second SCY manufacturing machine adjacent to the splint yarn 35 obliquely upward through the guide 36 while twisting. The yarn is fed to the pindle 38, and the splicing yarn 35 is attached to the outer periphery of the elastic yarn 32 drawn out from the package 31, and the second spindle device 37 feeds the outer periphery of the elastic yarn 32 and the splicing yarn 35. The covering yarn 43 is manufactured by winding the winding yarn 40 from the yarn bobbin 39 and tightening it.

  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 addition, in the covering yarn of the present invention, its manufacturing method, manufacturing apparatus, and highly stretchable clothing, for example, while increasing the stretch rate, reducing the number of windings of the wound yarn makes it easier to get fluff, etc. Modifications can be made freely within the scope of the claims.

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 SCY. The schematic diagram which shows the form of the expansion | extension state of the conventional SCY. The schematic diagram which shows the manufacturing apparatus of the conventional DCY. The schematic diagram which shows the form of the expansion | extension state of conventional DCY. The schematic diagram which shows the manufacturing apparatus of another conventional covering yarn. The schematic diagram which shows the form of the non-expanded state of another conventional covering thread | yarn.

Explanation of symbols

Package ... 31
Elastic thread ... 32
First spindle ... 33
Splicing yarn ... 35
Yarn feeding bobbin ... 34
Second spindle ... 38
Winding yarn ... 40
Yarn feeding bobbin ... 39
Deli Berry Roller ... 41
Traversa ... 42
Covering thread ... 43
Winding bobbin ... 44
Winding part ... 45
Fluff part ... 46

Claims (4)

  A spliced yarn made of a synthetic fiber that is forcibly twisted is attached to the outer periphery of the elastic yarn stretched to a predetermined elongation rate. In this state, the elastic yarn and the spliced yarn are wound by a wound yarn made of a synthetic fiber. A covering yarn characterized in that when the elastic yarn is in an unstretched state, a wound portion made of a wound yarn and a twisted fluffy portion made of a spliced yarn are formed on the outer periphery of the elastic yarn.   Twist is made by rewinding the spun yarn while rotating the yarn feeding bobbin of the first spindle around which the spliced yarn made of synthetic fiber is rotated at high speed, and the elastic yarn stretched to a predetermined elongation rate passes through the second spindle. The splicing yarn is fed so as to be attached to the outer periphery of the elastic yarn, and then the wound yarn made of synthetic fiber is wound around the elastic yarn and the splicing yarn from the yarn feeding bobbin of the second spindle. A method for producing a covering yarn, comprising winding an elastic yarn and a splicing yarn.   A spun yarn made of synthetic fiber is wound and has a yarn supplying bobbin that rotates at a high speed, and a first spindle that twists by rewinding the spliced yarn while rotating the yarn supplying bobbin at a high speed; 1. A state in which a spool bobbin made of synthetic fiber is positioned obliquely above one spindle, and the twisted spliced yarn is attached to the outer periphery of an elastic yarn drawn at a predetermined elongation rate And a second spindle that winds the elastic yarn and the splicing yarn around the outer periphery of the elastic yarn and the splicing yarn to wind the elastic yarn and the splicing yarn.   It is the covering yarn of Claim 1, Comprising: The highly elastic clothing obtained by preparing S twist yarn and Z twist yarn from which a twist direction differs, and knitting these S twist yarn and Z twist yarn alternately for each course.

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