JP2000128428A - Elastic yarn package and its winding means - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elastic yarn package excellent in unreeling performance, in shape holding properties of the yarn package, and having a large yarn package volume, and to provide a winding means efficiently winding the elastic yarn package. SOLUTION: This yarn package is composed by winding elastic yarn on a cylindrical core 2 with the width 50 to 100 mm and the inner diameter 65 to 80 mm. The winding width of the elastic yarn to be wound from the innermost layer to the outermost layer is increased/decreased in the range of 60 to 99% of the core width. The elastic yarn package has the outer diameter of 145 to 205 mm. The elastic yarn is wound around a cylindrical core having width 50 to 100 mm and diameter 65 to 80 mm, to form the elastic yarn package having diameter 145 to 205 mm. Traverse speed is controlled so as to have at least either of the maximum and minimum values for a period from the start of winding to the end of winding.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elastic wound thread body. More specifically, the present invention relates to a polyurethane elastic yarn winding body, in which the unwinding of the yarn from the winding body is good, and the stopping frequency of the processing machine is reduced in the steps of higher-order processing such as warping and covering. The present invention relates to a multi-winding elastic wound yarn body in which the amount of yarn per unit wound body is increased in order to reduce the amount, that is, the usable amount of yarn is increased.

[0002]

2. Description of the Related Art Products using elastic yarns are widely used in many commodity fields that require elasticity, such as industrial materials, clothing materials, sanitary materials, and clothing miscellaneous goods. ing.

[0003] Many products using elastic yarn are
It is practically used in the form of elastic yarn as a thread or in the form of a fabric such as a woven or knitted fabric, but in the manufacture of such a product, a required number of elastic yarn wound bodies in which an elastic yarn is wound around a core are prepared. The elastic yarn is unwound from the wound body sequentially or in parallel using a depolarizing feeder (vertical take-up device) or a positive feeder (rolling take-up device), and is generally called a hard yarn such as nylon or polyester. It is used as a woven or knitted fabric by a method of knitting in combination with a yarn, a method of directly inserting an elastic yarn itself into a knitting structure, a method of performing warping (beam processing) in units of several hundreds, and a method of knitting the yarn. You.

[0004] In recent years, in order to improve productivity, increase efficiency, and reduce manufacturing costs in the manufacturing process of the woven or knitted fabric, a customer stops the processing machine for replacing the elastic bobbin. There was a strong demand for increasing the number of windings of the wound body to reduce the frequency. As a conventional technique relating to a large amount of elastic yarn wound body, a wound body (1) having a winding amount of 1.5 kg or more has been disclosed as disclosed in Japanese Patent Publication No. 5-50429.

As a conventional technique for manufacturing a wound body, a method for improving the shape of the wound body and improving the unwinding performance is disclosed in Japanese Patent Application Laid-Open No. 7-97137, Japanese Patent Publication No.
No. 175568 discloses a method (2) for keeping the wind ratio constant during winding, that is, a method (2) for decreasing the helix angle with an increase in the winding amount.

Japanese Unexamined Patent Publications Nos. 64-48782 and 7-25479 disclose a winding method (3) in which the hoop angle is changed simultaneously with approaching the ribbon band in order to avoid the ribbon band. It had been.

[0007] In a high-order processing method in which a wound body is rolled and unwound, a technique for preventing the yarn from falling off the outermost layer of the wound body and cutting the yarn is disclosed in Japanese Patent Application Laid-Open No. 26-264, 1993.
No. 62355, Japanese Patent No. 2773374, etc., a method (4) of increasing the traverse speed of the outermost layer of the wound body, and a method (5) of reducing the contact pressure applied to the wound body when switching the yarn. Was disclosed.

[0008]

With respect to the technique of winding a large amount of elastic yarn, in the method shown in (1), 280 is used.
The present invention relates to an elastic yarn having a denier or more, a winding width and a winding pressure ratio of 0.4 or more (a winding body having a core width of 11 cm to 12 cm to be used), and an attached oil agent having a weight ratio of 2% or less. .

However, the core width used in the wound body of the present invention is 10 cm or less with respect to (1), and the denier of the elastic yarn to be wound is smaller than that of (1). A technique for obtaining a wound body having a denier of not less than 10 deniers and not more than 210 deniers and further having an adhesion amount of an oil agent of 2% by weight or more; Is different.

As a general means for increasing the number of windings, a method of simply extending the winding time and increasing the winding diameter of the wound body, that is, the outer diameter, and enlarging the width of the core of the wound body, A winding method or the like is conceivable. These methods are considered to be the most economical and efficient. These methods are routinely used for hard yarns such as nylon and polyester.

However, in the case of an elastic yarn, particularly a polyurethane elastic yarn, since the elastic yarn has elasticity, in order to maintain its shape as a wound body, it is necessary to maintain the stretched state of the elastic yarn to some extent. Need to be wound around the core.

Therefore, when the elastic yarn is wound in a large amount, not only the specific tightening of the elastic yarn but also the stronger tightening is generated, so that the shape is deformed (distorted), and the knitting machine or the like is not used. It could not be mounted on the processing machine and could cause fatal trouble such as thread breakage.

Fortunately, when such shape deformation is very small, the typical unwinding speed for circular knitting and covering applications is 1
The unwinding of about 100 m / min or less does not present any particular problem, but the unwinding of 100 m / min or more for warping (beam processing) causes vibration and abnormal tension, and impairs the quality of the fabric after knitting. There was a problem.

In particular, in recent years, in the cost competition of higher-order processing manufacturers, there has been a strong demand for high-speed, stable unwinding performance in order to improve productivity, that is, to increase the processing speed. In order to form a large number of elastic yarns, it is essential not only to increase the amount of winding but also to obtain a uniform form and more stable unwinding performance.

In addition, in the case of a large number of windings, in addition to the above-described shape deformation, a shape defect may occur in which the elastic yarn wound on the inner layer is extruded in the width direction of the wound body due to tightening. In this case, when the wound body is packed and transported in a case or the like, the extruded portion comes into contact with packing materials and the like, and is rubbed, so that the elastic yarn is cut. This causes a problem of lowering, and also causes a problem that thread breakage occurs due to contact during use, particularly in a processing method in which wound bodies are used side by side.
Furthermore, what is most fatal in this respect is that the yarn on the outer layer side falls off from the winding width of the wound body in the innermost layer, and the yarn breaks.

The technique (2) is a method for suppressing this shape defect. However, in the method for keeping the wind ratio constant,
This problem could not be completely solved.

The technique (3) also has the effect of suppressing the occurrence of the ribbon band and reducing the breakage of the yarn due to the ribbon band, but fails to achieve a large number of windings.

The techniques (4) and (5) are techniques only for avoiding the yarn falling off at the outermost layer, and when the width of the core is enlarged and used, many high-order processing machines are used. In addition to the fact that the equipment cannot be installed, and that the remodeling of the equipment requires enormous costs, and when the number of wound yarns used is large, the size and shape of the equipment and the factory building There has been a problem that enormous costs are required for remodeling and the like.

Therefore, it is considered that it is more effective to increase the outer diameter of the wound body for a large number of windings. However, as described above, a technique for maintaining the shape is indispensable for the large number of windings. It is.

Furthermore, if there is a technique for maintaining the shape, it is possible to increase the winding width within the existing core width.

Accordingly, an object of the present invention is to provide an elastic yarn wound body having a good unwinding performance and excellent shape retention of a wound yarn, a large amount of wound yarn, and an efficient elastic yarn wound body. To provide a winding method.

[0022]

The elastic wound thread body of the present invention has the following structure to solve the above-mentioned problems.

That is, the elastic yarn is wound around a cylindrical core having a width of 50 mm or more and 100 mm or less and an inner diameter of 65 mm or more and 80 mm or less. The elastic yarn is wound from the innermost layer to the outermost layer. The winding width is 60 core widths
% And 99% or less, and the outer diameter is 145.
It is an elastic wound thread body having a length of not less than mm and not more than 205 mm.

Further, the method for winding an elastic yarn wound body of the present invention has the following configuration in order to solve the above problems.

That is, a method of winding an elastic yarn wound body having an outer diameter of 145 mm to 205 mm on a cylindrical core having a width of 50 mm to 100 mm and an inner diameter of 65 mm to 80 mm, A method for winding an elastic yarn winding body, characterized in that a traverse speed is controlled so as to take at least one of a maximum value and a minimum value from the start of winding to the end of winding.

[0026]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an elastic wound thread body and a method of winding the elastic wound thread body of the present invention will be described in detail.

An example of the shape of the elastic wound thread body of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a schematic side view schematically showing an example of the shape of the elastic wound body of the present invention, and FIG. 2 is a direction perpendicular to the direction of rotation of the wound body. FIG. 2 shows a cross-sectional view on a plane A passing through a central portion 1.

In the present invention, the core 2 is a cylindrical one, and its material, hardness, wall thickness, weight and the like are not limited at all, and the molded product is made of paper or plastic resin. Or a combination of them.

The inner diameter of the core in the present invention refers to the inner diameter f of the core of the wound body, and its specific range is 65 depending on the size of the device used in the processing step.
mm to 80 mm, preferably 70 mm to 75 mm.

The elastic yarn in the present invention is a polyether-based, polyester-based polyurethane elastic yarn, polyamide-based elastic yarn, or an elastic yarn obtained by compounding or mixing with other organic synthetic resin bodies mainly composed of these. Can be applied.

The winding width a in the present invention indicates how wide the yarn is wound in the direction perpendicular to the rotation direction of the core 2 during winding.

The increase and decrease of the winding width a described in the present invention means that the winding length from the innermost layer of the wound body, that is, the starting portion of the elastic yarn, to the outermost layer of the wound winding of the elastic yarn, that is, the winding end portion. Indicates that the winding width changes.

More specifically, from the innermost layer to the outermost layer, the winding width a is 60% of the length of the core width b.
It changes within the range of at least 99%.

If it exceeds 99%, as described above, there is a problem of thread breakage due to rubbing, and if it is less than 60%, there is a problem that the product defect rate due to shape deformation increases.

The winding width a preferably changes in the range of 63% or more and 97% or less, and more preferably changes in the range of 65% or more and 95% or less.

The outer diameter of the wound body in the present invention refers to the diameter c of the wound body, and its specific range is 145 mm depending on the size of the device used in the processing step.
And not more than 205 mm, more preferably not less than 160 mm and not more than 205 mm.
mm or less is more preferable.

In this range, if the winding method described in the present invention is used, a large number of windings can be stably obtained without any trouble.

The definition of the twill angle in the present invention will be described in detail with reference to FIG.

FIG. 3 is an example showing modelly the definition of the twill angle of the elastic wound thread body of the present invention.

In the present invention, the twill angle 6 refers to the angle between the rotational direction 7 of the wound body and the yarn 8 traversed in the width direction of the wound body.

The twill angle 6 is from the innermost layer portion to the outermost layer with respect to the twill angle in the innermost layer portion of the wound body (in the present invention, a portion in which a core of about 5 g to 10 g is wound on the core). Part (in the present invention, a part where the weight of the yarn per wound body is 98% or more of the specified winding amount of the wound body) is -70% or more and + 70% or less. Is preferably performed.

In the present invention, the change in the winding angle from the innermost layer portion to the outermost layer portion within the range of -70% or more and + 70% or less with respect to the twill angle of the innermost layer portion of the wound body is, for example, the following. When the helix angle of the inner layer portion is 10 °, the twill angle changes from 3 ° to 17 ° from the innermost layer portion to the outermost layer portion.

Further, the portion where the twill angle increases from the innermost layer portion, passes through the local maximum value, and starts to decrease, has the effect of suppressing the extrusion of the yarn in the winding width direction caused by the large number of windings. A problem called twill drop, in which the yarn falls off from the winding width due to the part where it turns to an increase through a minimum value from the decrease, and the dropped yarn is caught by other parts of the wound body during high-order processing, causing the yarn to break. From the viewpoint that the effect of suppressing is obtained, the helix angle gradually increases from the innermost layer to the outermost layer,
It is particularly preferable to change gradually and gradually.

The above maximum value and minimum value are as follows.
It is preferable to take at least one each from the innermost layer portion to the outermost layer portion, and the S-shaped change in FIG. 5 described later is particularly preferable.

The cross-sectional shape of the elastic yarn used in the present invention is not particularly limited.
A monofilament yarn having an irregular cross section or a multifilament obtained by assembling a plurality of such filaments may be used. However, the fineness of the elastic yarn used in the present invention is currently warping (beam processing) which requires high speed unwinding.
In use, from the viewpoint of maximizing the effect obtained by the present invention, 10 denier or more (hereinafter, abbreviated as d) 21.
0 d or less is preferable, and 20 to 70 denier is more preferable.

The oil agent used in the present invention is dimethylpolysiloxane for the purpose of preventing adhesion of the wound yarns, improving the permeability of the yarns to a high-order processing machine, that is, reducing friction with mechanical members. Or a modified polysiloxane obtained by substituting a part of the methyl group of the substance with another alkyl group, a phenyl group, an amino group, or the like, or a silicon-based mixture thereof. An oil-based material, a mineral oil-based material, or a mixture of a silicon-based oil-based material and a mineral oil-based material may be used.

Further, the component ratio, mixing ratio and the like in such a case are not particularly limited.

In the present invention, the attached amount of the oil agent means a weight ratio of the oil agent to the yarn represented by the following definition formula 1.

Amount of oil agent attached (%) = (A / (BA)) × 100 (Equation 1) where A: total amount of oil agent adhered to the yarn of the wound body B: total amount of the wound body Weight (excluding core weight) The adhesion amount of the oil agent is preferably 1% by weight or more and 10% by weight or less, more preferably 3% by weight or more and 8% by weight or less.

When the amount of adhesion exceeds 10% by weight,
In high-order processing, there is a tendency for oil to fall off or to be scattered, and also to cause a large amount of oil to adhere to packing materials (oil stains), which tends to impair the quality of the product. If the amount is less than 1% by weight, the ability to stably unwind the yarn tends to be significantly impaired.

The elastic yarn weight of the wound body of the present invention is 500 g.
It is preferably at least 1100 g and more preferably 530 g
g to 1100 g, more preferably 710 g
g or more and 1100 g or less.

The winding density of the wound body of the present invention is represented by the following definition formula 2.

Winding density (g / cm ³ ) = (B / C) × 100 (Equation 2) where B: total weight of wound body (g) (excluding core weight) C: total capacity of yarn (Cm ³ ) The winding density of the wound body of the present invention is such that a large amount of winding suppresses the crushing of the yarn in the width direction during winding or the deformation of shape due to tight tightening. 0.5 g / cm ³ or more and 1 g / cm ^3
3 or less, more preferably 0.6 g / cm ³
It is 0.9 g / cm ³ or less.

In the present invention, the method for measuring the winding density is not particularly limited.
A part of the wound body is molded using a resin such as clay or silicone, a fluid such as water is poured therein, the volume of the poured fluid is weighed, and the density is determined from the weight of the wound body. A method or the like can be adopted.

The innermost layer portion of the wound body in the present invention means that the yarn shown in FIGS. 1 and 2 comes into contact with the surface layer portion of the cylindrical core 2. means. In the present invention, the packed cake comes into contact with the packing material and is rubbed to cause breakage such as thread breakage, or the cake is deformed, which makes it difficult to stably produce a large number of windings. From the viewpoint of preventing such a situation, the distance d from the side surface of the core to the cylindrical core 2, that is, the distance of the portion where the yarn is not wound is preferably 0.5 mm or more and 6 mm or less, more preferably 1 mm or less. 0.5 mm or more and 5 mm or less.

In the case where a tail is formed on the wound body, the geometrical shape of the center line (102) in the width direction of the core 2 and the wound body itself (for example, a portion indicated by a hatched portion in FIG. 2) is used. If the center line (101) does not match, the distance between the side surface of the core and the shoulder of the wound body is the left side of the core and the left shoulder of the wound body, and the right side of the core and the right shoulder of the wound body. It is preferable to use a value obtained by arithmetically averaging the distance with the distance.

FIGS. 1 and 2 show the outermost layer in the present invention.
The surface layer portion 4 of the wound body shown in FIG.

The shoulder portion is a portion indicated by 5 in the drawing, and is a viewpoint of preventing rattling and vibration during running during rolling and unwinding, or a case where the yarn falls off the winding width in the unwinding. From the viewpoint of preventing the above, the distance e from the plane including the side end of the core 2 is preferably 5 mm or more and 10 mm or less.

Next, the method for winding the elastic yarn wound body of the present invention will be described in detail with reference to the drawings. FIG. 4 is a schematic view showing an example of the winding device used in the present invention.

In FIG. 4, reference numeral 9a denotes a spindle roll during winding, and 9b denotes a standby spindle roll. 9
In both a and 9b, the core 10 is mounted. Numeral 11 denotes a traverse device using a cam roll. In the present invention, the traverse device may be not only a cam roll but also a type using traverse blades or another type.

Each of 9a and 9b rotates on its own, and its rotation speed is controlled. The peripheral speed is controlled by a method of detecting the rotation of the wound body 12, that is, the peripheral speed by the contact pressure roll 13, and controlling the rotation of the spindle roll. This makes it possible to keep the winding tension constant or to change it.

The contact pressure roll 13 is bonded to the wound body 12 by compressed air. Further, by controlling the compressed air pressure, the contact pressure between the contact pressure roll 13 and the winding body 12 can be kept constant or changed.

The method of winding an elastic yarn wound body of the present invention controls the traverse speed to take at least one of a maximum value and a minimum value from the start of winding to the end of winding.

As a result, the winding width is increased or decreased from the start of winding to the end of winding. As a method of increasing or decreasing the winding width, a method of changing the helix angle by changing the rotation speed of the traverse cam roll 11 or the like can be adopted.

More specifically, as a means for changing the twill angle, a traverse mechanism is provided for repeatedly winding the elastic yarn in the winding axis direction with respect to a winding machine (FIG. 4) for winding the elastic yarn around the core. A method of increasing or decreasing the speed of the traverse mechanism of the winding device as the winding diameter of the wound body increases can be adopted.

That is, in the present invention, the traverse speed refers to the speed of the traverse mechanism and has a correspondence with the traverse angle.

FIG. 5 is a diagram illustrating a model in which the twill angle is gradually increased, gradually reduced, and gradually increased from the start of winding to the end of winding in the present invention. In FIG. 5, the horizontal axis indicates the time required from the start of winding to the completion of winding, and the vertical axis indicates the angle to be controlled.

Further, in the present invention, the tension at the time of winding is not particularly limited. However, either constant means or means for changing according to the winding amount may be used.

In the present invention, the winding body 1 at the time of winding is used.
The load applied to No. 2 is appropriately determined according to the product type and the winding speed, and is not particularly limited. However, either a constant means or a means changing in accordance with the winding amount may be used. However, in the case of the elastic yarn, if the load is too weak, the pressure roller 13 slips due to the adhering oil agent, and the speed control tends to be difficult. If the load is too strong, the wound body is deformed or crushed by the load. The load acting on one wound body is preferably 0.1 kg or more and 10 kg or less,
0.5 kg or more and 2 kg or less are more preferable.

In the present invention, when the load at the time of winding is changed, there is a possibility that the side surface of the wound body is stepped. Therefore, it is necessary to keep the load on the surface of the wound wound body constant. It is preferably performed.

As a method for keeping the surface pressure on the surface of the wound body constant, in the present invention, a method such as control using an air cylinder, a mechanical spring, or hydraulic pressure can be employed.

[0073]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to embodiments. [Examples 1 and 2] A 40-denier polyether-based polyurethane elastic yarn composed of 4 filaments was used for a width of 57.5 m.
m, a paper core having an inner diameter of 73.5 mm and a wall thickness of 6.1 mm, a winding speed (peripheral speed of the wound body) of 500 m using a winding device shown in FIG.
750 g (Example 1) and 1000 g (Example 2) of yarn were wound up at a contact pressure of 10 kg / min and a contact pressure of 10 kg. The amount of oil applied was 6%.

The control of the twill angle at this time is as shown in Table 1 below. The initial twill angle, that is, the twill angle at the innermost layer is 1
1.5 ゜.

[0075]

[Table 1] * The shape of the wound body obtained in this example is shown in FIG. 6 (Example 1) and FIG. 7 (Example 2).

The winding width% of the obtained wound body ((a / b) × 1)
00), outer diameter c, distance d from the innermost layer to the side of the core,
Table 2 shows the measured values of the distance e from the outer layer shoulder to the core side surface.

[0077]

[Table 2] * Using the obtained wound body having a winding amount of 750 g, the unwinding performance was evaluated using a warper.

The conditions at that time were as follows.

Number of winding yarns used: 621 Warping machine used: DSE type (manufactured by KARL MAYER) (warping machine for spandex) Beam drum used: 21 inches wide × 21 inches flange width Elastic yarn feeding speed: 200 m / min beam stretch: 100% As a result, the yarn length is 190,000 m without breaking the yarn, and the remaining yarn weight at that time is from 1 g to 8 g, that is, the unwinding is performed to just before the core skin. It was possible.

[0080]

According to the present invention, an elastic yarn wound body having a good unwinding performance and excellent shape retention of a wound yarn and a large amount of wound yarn, and a winding method for efficiently winding such an elastic wound yarn body. You can get how to take.

[Brief description of the drawings]

FIG. 1 is a schematic side view schematically showing a shape of an example of a wound body of the present invention.

FIG. 2 shows an AA cross section of FIG.

FIG. 3 is a model diagram showing a definition of a twill angle in a wound body of the present invention.

FIG. 4 is a schematic view showing an example of a winding device used in the present invention.

FIG. 5 is a schematic distribution diagram schematically showing a relationship between a winding angle and a winding time from the time when winding is started to the time when winding is completed in the present invention.

FIG. 6 is a schematic diagram schematically illustrating an example of dimensions of a wound body according to the first embodiment of the present invention.

FIG. 7 is a schematic diagram schematically illustrating another example of the dimensions of the wound body in the second embodiment of the present invention.

[Explanation of symbols]

 1: winding core 2: core 3: core side face 4: outermost layer 5: winding shoulder 6: twill angle 7: rotating direction of winding 8: traversed yarn (elastic yarn) 9) Spindle roller 10: Core 11: Traverse cam roll 12: Winding body 13: Contact pressure roll a: Winding body winding width b: Core width c: Winding body outer diameter d: Winding body innermost layer from core side E: distance from the side of the core to the shoulder of the wound body f: core inner diameter 101: center line in the geometrical shape of the wound body 102: center line in the width direction of the core

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Thomas Edward Willis 243 Stoneton Chimney, Nellysford, Virginia, USA F-term (reference) 3F115 AA09 BA03 CA46 CA53

Claims (14)

[Claims] (1) a width of 50 mm or more and 100 mm or less;
This is a wound body in which an elastic yarn is wound on a cylindrical core of not less than 80 mm and not more than 80 mm. From the innermost layer to the outermost layer, the winding width of the elastic yarn is 60% or more of the core width and 99% or more.
% And the outer diameter is 145 mm or more 2
An elastic wound thread body having a length of not more than 05 mm. 2. From the innermost layer portion to the outermost layer portion, the helix angle formed by the rotation direction of the wound body and the yarn traversed in the width direction of the wound body is -70 with respect to the hoop angle of the innermost layer portion. % Or more +70
%. The elastic wound thread body according to claim 1, wherein the elastic thread volume is changed by not more than%. 3. The elastic yarn wound body according to claim 1, wherein the twill angle has at least one maximum value and minimum value from the innermost layer portion to the outermost layer portion. 4. The elastic yarn wound body according to claim 1, wherein the fineness of the elastic yarn is not less than 10 denier and not more than 210 denier. 5. The elastic yarn wound body according to claim 1, wherein the elastic yarn is made of a polyurethane elastic yarn. 6. The elastic yarn is provided with an oil agent, and the oil agent component contains a silicone oil.
6. The elastic wound thread body according to any one of claims 1 to 5. 7. The elastic yarn winding according to claim 1, wherein an oil agent is applied to the elastic yarn, and the amount of the oil agent attached to the elastic yarn is 1% by weight or more and 10% by weight or less. Thread body. 8. A width of 50 mm or more and 60 mm or less, and an inner diameter of 65 m.
A wound body in which an elastic yarn is wound on a cylindrical core having a length of not less than m and not more than 80 mm, wherein the weight of the wound elastic yarn is 500
The weight is not less than 1 g and not more than 1100 g.
An elastic wound thread body according to any one of claims 1 to 7. 9. The density of the elastic yarn is 0.5 g / cm ³ or more and 1 g.
/ Cm ³ or less, the elastic wound thread body according to any one of claims 1 to 8, wherein 10. A portion where the elastic yarn contacts the outermost surface of the core;
The elastic wound thread body according to any one of claims 1 to 9, wherein a distance from the side surface of the core is in a range of 0.5 mm or more and 6 mm or less. 11. The distance between the shoulder of the surface layer which determines the outer diameter of the wound body and the plane including the side end of the core is 5 mm or more and 10 mm or more.
The elastic wound thread body according to any one of claims 1 to 10, which is in the following range. 12. A width of 50 mm or more and 100 mm or less, and an inner diameter of 6 mm.
A method of winding an elastic yarn wound on a cylindrical core having a diameter of 5 mm or more and 80 mm or less and having an outer diameter of 145 mm or more and 205 mm or less. Is controlled to take at least one of a local maximum value and a local minimum value. 13. The winding angle of the elastic yarn between the winding direction of the elastic yarn and the yarn traversed in the width direction of the winding body is defined as- The method for winding an elastic yarn wound body according to claim 12, wherein the change is performed within a range of 70% or more and + 70% or less. 14. A constant load applied to the wound body from the start of winding to the end of winding.
Or a method for winding an elastic wound thread body according to item 13.