JP2004142944A - Elastic yarn wound body and method of manufacturing the same - Google Patents

Elastic yarn wound body and method of manufacturing the same Download PDF

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JP2004142944A
JP2004142944A JP2003334923A JP2003334923A JP2004142944A JP 2004142944 A JP2004142944 A JP 2004142944A JP 2003334923 A JP2003334923 A JP 2003334923A JP 2003334923 A JP2003334923 A JP 2003334923A JP 2004142944 A JP2004142944 A JP 2004142944A
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bobbin
winding
diameter
yarn
tapered
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Yoshihide Kawamura
Shigehide Kusakai
Hidekazu Sasaki
佐々木 秀和
川村 佳秀
草皆 茂秀
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Fuji Spinning Co Ltd
富士紡績株式会社
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Priority to JP2003334923A priority patent/JP2004142944A/en
Priority claimed from TW93100160A external-priority patent/TWI242533B/en
Publication of JP2004142944A publication Critical patent/JP2004142944A/en
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Abstract

PROBLEM TO BE SOLVED: To obtain a cone-shaped elastic yarn winding body having good winding shape without poor winding of a winding body and excellent in unwinding property.
SOLUTION: When an elastic yarn is wound around a tapered bobbin, a winding speed (V 1 ) of a tapered bobbin at a small diameter side winding body end surface and a winding speed of a tapered bobbin at a large diameter side winding body end surface. The ratio (V 1 / V 2 ) of the take-up speed (V 2 ) depends on the linear distance (L 2 ) between the traverse fulcrum guide and the end surface of the tapered bobbin on the large diameter side and the traverse fulcrum guide and the tapered bobbin. Winding is performed while moving the traverse fulcrum guide position so as to be substantially equal to the ratio (L 2 / L 1 ) of the linear distance (L 1 ) between the end faces of the small diameter side wound body. The average value of the unwinding resistance values of the elastic yarns of the obtained elastic yarn winding body is 3.2 to 3.4.
[Selection diagram] Fig. 1

Description

The present invention relates to a method for winding an elastic yarn in a good cone shape on a tapered bobbin and a wound yarn body, and the obtained elastic yarn winding body has excellent unwinding properties, such as a disposable diaper. It can supply a cone-shaped elastic wound thread suitable for yarn feeding, which is used in the field of industrial material production and the field of warp knitting and warping.

A cone-shaped wound body obtained by winding a yarn on a tapered bobbin while traversing the yarn has a yarn unwinding property when fixing the wound body and taking out the yarn in the direction of the end surface of the wound body. It is widely used for winding ordinary spun yarns and synthetic fibers such as polyester and nylon. However, when winding in a cone shape, the winding speed of the bobbin is different between the large diameter side and the small diameter side, so that the winding tension increases on the large diameter side of the bobbin with a high winding speed, and the small diameter side of the bobbin with a slow winding speed. In this case, there is a problem that the winding tension becomes low and a difference in winding tension occurs between the large diameter side and the small diameter side, and the conventional low elongation yarn as described above does not cause a great problem in practical use. In the case of low-stress, high-elongation yarns such as bare polyurethane elastic yarns, winding on tapered bobbins is performed because a difference in winding tension occurs when winding onto tapered bobbins and the winding shape becomes poor. I didn't.

With respect to the elastic yarn, there is known an elastic yarn winding body for a disposable diaper having a winding shape of 1.5 kg or more and a winding thickness / winding value of 0.4 or more and excellent unwinding property. (See Patent Document 1). The wound body is suitable for unwinding the elastic yarn while rotating the wound body. However, when the wound wound body is fixed and the elastic yarn is unwound in the direction of the end surface of the wound body, the winding is performed. There is a drawback that the elastic thread is caught on the ear of the thread body, causing problems such as thread breakage. In order to remedy such drawbacks of the wound body, there is also known an elastic wound body in which the value of the thickness / width of an elastic yarn made of dry-spun polyurethane urea is less than 0.4. (See Patent Document 2). However, the basic shape of any invention is a parallel cheese, and when the wound body is fixed and the elastic yarn is unwound in the direction of the end face of the wound body, the unwinding resistance is larger than that of the corn cheese, and in particular, bare cheese is used. In the case of polyurethane elastic yarn or the like, the magnitude of unwinding resistance causes problems such as yarn breakage and uneven supply tension.
Japanese Patent Publication No. 5-50429 JP-A-11-157750

The present invention relates to a method for winding an elastic yarn having a low stress and a high elongation onto a tapered bobbin, in order to obtain an elastic yarn having a good shape and excellent unwinding property without winding failure of the wound body. It is an object of the present invention to provide an elastic wound thread body and a method of manufacturing an elastic wound thread body that solves an irregular winding tension in which a difference in winding tension between the large diameter side and the small diameter side in the width direction of the attached bobbin occurs.

The present inventors have conducted intensive studies in order to solve the above-mentioned problems, and focused on adjusting the position of a traverse fulcrum guide, thereby completing the present invention.
The elastic bobbin of the present invention is an elastic bobbin wound on a tapered bobbin while traversing the elastic yarn, and the average value of the unwinding resistance of the elastic yarn from the elastic bobbin is 3.2. 33.4 g. In the present invention, when the elastic yarn is wound on the tapered bobbin from the elastic yarn winding body while traversing the elastic yarn, the winding speed (V 1 ) at the end surface of the tapered bobbin on the small diameter side winding body and the tapering bobbin large. The ratio (V 1 / V 2 ) of the winding speed (V 2 ) at the end face of the diameter side winding body and the linear distance (L 2 ) between the traverse fulcrum guide and the end face of the large diameter side winding body of the tapered bobbin. And the position of the traverse fulcrum guide is moved so that the ratio (L 2 / L 1 ) of the linear distance (L 1 ) between the traverse fulcrum guide and the small-diameter-side bobbin end surface of the tapered bobbin becomes substantially equal. While winding, an elastic wound thread body is manufactured.
The ratio of the winding speed at the take-up velocity (V 1) and the larger diameter side winding yarn body end face of the tapered bobbin of small diameter side winding yarn body end face of the tapered bobbin (V 2) and (V 1 / V 2) , The linear distance (L 2 ) between the traverse fulcrum guide and the end surface of the large-diameter side bobbin of the tapered bobbin, and the linear distance (L 1 ) between the traverse fulcrum guide and the small-diameter side bobbin end surface of the tapered bobbin. The ratio (L 2 / L 1 ) preferably satisfies 0.85 ≦ V 1 L 1 / V 2 L 2 ≦ 1.15.

The cone-shaped polyurethane elastic yarn wound body obtained by the method of the present invention has no poor shape in appearance and no loose winding in the inner layer of the wound yarn, and has a small deviation value of unwinding resistance, so that there is little change in tension and unwinding property. It has made it possible to wind up the bare polyurethane elastic yarn on a tapered bobbin.

The elastic yarn used in the present invention includes polyurethane elastic yarn, polyether elastic yarn, polyester elastic yarn, polyether / ester elastic yarn, polyamide elastic yarn, polycarbonate elastic yarn, polybutylene terephthalate elastic yarn. Or an elastic yarn obtained by combining these elastic yarns with another material. In particular, the effect of the present invention is remarkably exhibited when a bare polyurethane-based elastic yarn having a low stress and a high elongation and having a large friction coefficient on the yarn surface and easily causing sticking between the yarns is used. The elastic yarn may be a monofilament or a multifilament, but a multifilament is preferred in the present invention. Further, the elastic yarn may be a material having a surface treatment agent such as an oil agent adhered thereto or may not be adhered thereto, and a wide range of elastic yarn having a fineness of 70 to 1200 denier can be used.

The cone-shaped elastic yarn wound body targeted by the present invention has a normal cone shape wound with substantially the same width from the winding start to the winding end, and a so-called winding width that gradually narrows from the winding start to the winding end. The shape may be any of a pineapple cone shape. The taper angle of the tapered bobbin used in the present invention may be, for example, a commonly used range of 3 ° 30 ′ to 9 ° 15 ′.

The elastic wound thread of the present invention is manufactured by the method described below, and the obtained elastic wound thread has a specific unwinding resistance value. That is, the average value of the unwinding resistance is preferably 3.2 to 3.4 g. In particular, in the case of bare polyurethane elastic yarn, if the unwinding resistance is less than 3.2 g, the unwinding resistance becomes too small, so that unwinding by inertia occurs and the yarn is unwound. Defects such as entanglement occur, and if it exceeds 3.4 g, the resistance increases, causing breakage of the yarn and hindrance to smooth supply.
Further, the deviation value of the unwinding resistance value represented by the following equation is preferably 0.16 or less, and if it exceeds 0.16, the dispersion of the unwinding resistance value is largely canceled and the length of the elastic yarn is stabilized. For example, when used in a disposable diaper manufacturing apparatus or a warp knitting machine, the quality of the manufactured disposable diaper or warp knitted fabric is deteriorated, which is not preferable.
Deviation value = (maximum value-minimum value) / average value

解 The unwinding resistance value of the elastic yarn of the wound yarn body is measured using an unwinding resistance measuring device. For example, as described in Examples described later, the unwinding resistance value is set to 0.46 m from the rear end of the bobbin while holding the elastic yarn wound body 11 wound back on the tapered bobbin as shown in FIG. Of the elastic yarn drawn out at 150 m / min by a pair of rollers 13 and 13 set at a position 0.23 mm away from the plate-like yarn guide 12 through the plate-like yarn guide 12 set at the position The tension is obtained by measuring the tension with a tension meter 14 (model: PLS-0.2KC, manufactured by Nidec Shinpo Co., Ltd.) set at a position of 0.11 mm from the plate-shaped yarn guide 12.

A bobbin drive type winder used when winding an elastic yarn on a tapered bobbin according to the present invention is configured by adding a detection sensor and a control device to a general-purpose winder, and its main part is As shown in FIG.

The winding machine used in the present invention may be used for direct winding of a spun elastic yarn, but is preferably spun and used for rewinding an elastic yarn wound body wound in a parallel cheese shape by an ordinary method. Are suitable. As the tapered bobbin, for example, a bobbin 6 having a taper angle of 3 ° 30 ′ or the like is used, and the tapered bobbin 6 is mounted on a spindle 7.

The spindle 7 is driven by an inverter motor via a gear device, and the winding speed is controlled to be constant even if the thickness of the yarn layer 5 of the elastic yarn wound around the tapered bobbin 6 increases. Preferably, a calculation unit that calculates based on information obtained from the yarn layer thickness detection sensor 1, the spindle rotation speed detection sensor 2, and the touch roller rotation speed detection sensor 3, and an output unit that sends a signal that maintains the set winding speed is provided. With the control device, whether the set take-up speed is maintained or not is checked by the touch roller rotation speed detection sensor 3.

The elastic thread wound body provided for the rewinding is fixed by a support (not shown), and the elastic thread 10 passes through a guide such as a snell wire, passes through a traverse fulcrum guide a, and is swung by a traverse device 9. By the touch roller 8 in contact with the tapered bobbin 6, the tape is wound around the tapered bobbin 6 with a set contact pressure. When unwinding the elastic yarn 10 from the wound elastic yarn wound body, it is preferable to use a positively driven yarn feed roller or the like in order to reduce the influence of tension fluctuation due to unwinding resistance. .

The traverse device 9 used in the present invention may be of a type in which a traverse guide for guiding an elastic yarn is reciprocated by a cam roller, or a type in which a wing is traversed by a rotary wing. The traverse speed is controlled by the spindle to maintain the winding number between the winding widths from the winding start position of the large-diameter side bobbin of the tapered bobbin 6 to the winding start position of the small-diameter side bobbin of the tapered bobbin 6. The calculation unit calculates based on information obtained from the rotation speed detection sensor 2 and the traverse speed detection sensor 4, and outputs a signal from the output unit.

An ultrasonic sensor or a laser sensor is used as the yarn layer thickness detection sensor 1 of the wound body used in the present invention, and a photo sensor or a proximity sensor is used as the spindle rotation speed detection sensor 2. A photosensor or a proximity sensor is used as the sensor 3, and a photosensor is used as the traverse speed detection sensor 4, which can be appropriately selected and used.

The control device of the bobbin drive type winder for winding the elastic yarn on the tapered bobbin 6 according to the present invention includes a setting unit, a calculation unit, and an output unit, and the setting unit includes a shape value of the tapered bobbin to be used (FIG. 2). The taper angle α, the bobbin width F, the linear distance E from the bobbin large-diameter end to the winding start position of the bobbin large-diameter side bobbin, the winding width D, the spindle speed and the traverse guide, which are the initial set values, are An input device such as a keyboard capable of inputting the number of winds while moving from the winding start position of the bobbin large-diameter side winding body to the winding start position of the bobbin small-diameter side winding body and a storage device for the input values may be used. .

The calculation unit calculates the position of the traverse fulcrum guide a via the servomotor based on the shape value of the tapered bobbin of the setting unit, the initial setting value, and information from each detection sensor, and keeps the winding speed constant. The traverse speed can be calculated so that the number of winds while the spindle speed and the traverse guide move from the winding start position of the bobbin large diameter side winding body to the winding start position of the bobbin small diameter side winding body are always constant. I just need. The output unit is configured to calculate the spindle rotation speed, the traverse speed, and the traverse fulcrum guide a based on a result calculated by the calculation unit based on the shape value of the tapered bobbin of the setting unit, the initial setting value, and information of each detection sensor. Any device that can output a signal for changing the position may be used.

In the present invention, the ratio between the winding speed of the tapered bobbin on which the elastic yarn is wound on the end surface of the small-diameter side bobbin and the winding speed of the tapered bobbin on the end surface of the large-diameter side bobbin is smaller than that of the traverse. The traverse fulcrum is calculated by calculating the ratio of the linear distance between the fulcrum guide a and the bobbin large diameter side bobbin end face to the linear distance between the traverse fulcrum guide and the tapered bobbin small diameter side bobbin end face. An instruction to move the position of the guide a is issued, and the position is determined. Hereinafter, description will be made with reference to FIG. FIG. 2 shows the positional relationship between the elastic bobbin wound on the tapered bobbin having the taper angle α and the traverse fulcrum guide a, the positional relationship between the spindle center and the traverse fulcrum guide, and the traverse fulcrum guide a and the tapered bobbin large. linear distance X between diameter end, the traverse support point guides a and tapered bobbin linear distance L 2 and traverse between the large-diameter winding yarn body end face c support guide a and tapered bobbin smaller diameter side winding yarn body end surface b between the is an explanatory view showing the linear distance L 1.

The winding speed V 1 (m / sec) of the tapered bobbin at the end surface of the small-diameter side bobbin of the tapered bobbin is the bobbin diameter A (m) at the winding start position of the small-diameter side bobbin of the tapered bobbin. It is defined by the following formula 1 based on the yarn layer thickness G (m) of the wound body, the traverse speed I (m / sec), and the spindle speed SP (number of times / sec).

The winding speed V 2 (m / sec) of the tapered bobbin at the end surface of the large-diameter bobbin is defined as the bobbin diameter B at the winding start position of the large-diameter bobbin of the tapered bobbin. (M), the thickness G (m) of the thread layer of the wound body, the traverse speed I (m / sec), and the number of rotations SP (number of times / sec) of the spindle are defined by the following equation (2).

Also, the linear distance L 2 (m) between the traverse fulcrum guide a and the tapered bobbin large-diameter side bobbin end face c in the present invention and the small-diameter side bobbin end face of the tapered bobbin from the traverse fulcrum guide a. The ratio (L 2 / L 1 ) to the linear distance L 1 (m) between b is the winding speed V 1 (m / sec.) at the end surface of the tapered bobbin on which the elastic yarn is wound. ) And the yarn layer thickness detection sensor of the wound body so that the ratio (V 1 / V 2 ) of the winding speed V 2 (m / sec) at the end surface of the tapered bobbin on the large diameter side wound body becomes equal. 1. Based on the information obtained from the spindle speed detection sensor 2 and the traverse speed detection sensor 4, the position of the traverse fulcrum guide a, the spindle speed SP, and the traverse speed I are calculated so as to satisfy the following equation. Output the result and traverse If the position of the fulcrum guide a is determined, an elastic wound thread body having a good shape and excellent unwinding property can be obtained.

Here, V 1 : winding speed (m / sec) at the end surface of the bobbin with tapered side on the small diameter side
V 2 : Winding speed (m / sec) of the tapered bobbin at the end surface of the large diameter side winding body
L 1 : traverse fulcrum guide a and bobbin small diameter side wound body end face b
Straight line distance between (m)
L 2 : Traverse fulcrum guide a and bobbin large diameter side wound body end face c
Straight line distance between (m)

At this time, the linear distance L 2 (m) between the traverse fulcrum guide a and the bobbin large-diameter-side winding body end surface c is a linear distance X (m) between the bobbin large-diameter C end and the traverse fulcrum guide, and is tapered. The linear distance E (m) between the bobbin large-diameter end and the winding start position of the large-diameter winding, the linear distance H (m) between the spindle center and the traverse fulcrum guide, and the large-diameter winding of the tapered bobbin The bobbin diameter B (m) at the winding start position and the yarn layer thickness G (m) of the wound body are expressed by the following equation (4).

The linear distance L 1 (m) between the guide a of the traverse fulcrum and the end surface b of the bobbin on the small diameter side is also determined by the winding width D (m) and the winding start position of the small diameter side bobbin of the tapered bobbin. And the bobbin diameter A (m) is expressed by the following equation (5).

距離 The distance H (m) between the spindle center and the traverse fulcrum guide can be appropriately determined according to the distance between the bobbins mounted on the bobbin drive type winder used.

The position of the fulcrum guide a of the traverse according to the present invention is determined by the following procedure. First, a taper angle (α), a bobbin width F (m), a distance E (m) from a bobbin large-diameter end to a winding start position, a winding width D (m), which are shape values of a bobbin to be used, and initial setting values. The spindle rotation speed SP 0 (revolutions / second) and the number of windings between the winding widths at which the traverse guide moves from the large-diameter side to the small-diameter side of the bobbin are input. The input taper angle (α), bobbin width F (m), distance E (m) from the bobbin large diameter end to the winding start position, and bobbin diameter A at the bobbin small diameter side winding start position from the winding width D (m) (M) and the bobbin diameter B (m) at the bobbin large-diameter winding start position are calculated, and the initial spindle rotation speed SP 0 (revolutions / second) and the traverse guide move from the bobbin large-diameter side to the small-diameter side. An initial traverse speed I 0 (m / sec) is calculated from the number of winds in between. Next, in equations ( 1 ) and (2), the winding speed V 1 (m / sec) at the small-diameter end face of the tapered bobbin and the large diameter of the tapered bobbin are set by setting the thread layer thickness G 0 = 0 at the beginning of winding of the wound body. the ratio of the winding speed V 2 (m / sec) in diameter end faces (V 1 / V 2) is calculated. Then, the linear distance L 1 between the traverse support point guides a and the small-diameter winding yarn body end face of the bobbin linear distance L 2 (m) and the support guide a traversal between the large-diameter winding yarn body end face c of the bobbin b ( calculates the ratio (L 2 / L 1) is equal L 2 / L 1 = V 1 / V 2 to become the traverse support point guide position X 0 of m), adopt a positive number determined.

In Equations 4 and 5, the bobbin diameter A (m) at the small-diameter winding start position and the bobbin diameter B (m) at the large-diameter winding start position are values obtained by the above-described calculation, and the winding width D ( m), the distance E (m) from the large diameter of the tapered bobbin to the winding start position of the large diameter side bobbin, and the linear distance H (m) between the spindle center and the traverse fulcrum guide are initial input values. Therefore, the linear distance L 1 between the traverse support point guides a and the straight line distance between the bobbin larger diameter side winding yarn body end face c L 2 (m) and traverse fulcrum guide a and the bobbin smaller diameter side winding yarn body end face b (m) The ratio (L 2 / L 1 ) is a function of the yarn layer thickness G (m) of the wound body and the linear distance X (m) between the bobbin large diameter end face and the traverse fulcrum guide. Here, since the yarn layer thickness G (m) of the wound body increases with time, L 2 / L 1 changes according to the linear distance X (m) between the bobbin large-diameter end face and the traverse fulcrum guide a. . By calculating V 1 / V 2 , L 2 / L 1 is determined, and the linear distance X (m) between the corresponding bobbin large-diameter end face and the traverse fulcrum guide is a solution of a quadratic equation. When the fulcrum guide position X 0 (m) is set, it is essential that this value be a positive value. The taper angle, the bobbin diameter, and the bobbin width of the tapered bobbin used when the traverse fulcrum guide position X 0 (m) at the start of winding is in a positive value range can be changed as appropriate.

The determination of the linear distance between the traverse fulcrum guide position X (m) after the start of winding and the large-diameter end of the tapered bobbin depends on the yarn layer thickness G (m) of the wound body, the traverse speed I (m / sec) and The procedure is the same as the procedure for determining the winding start position, except that the value measured by each sensor is used as the spindle rotation speed SP (number of times / second). It is preferable that the traverse fulcrum guide position is controlled continuously as shown in FIG. It can also be performed step by step.

That is, in the present invention, as described above,
L 2 / L 1 = V 1 / V 2
The traverse fulcrum guide position is controlled so as to satisfy the following condition. This control can be performed continuously or stepwise within a certain range. Therefore, in the present invention, L 2 / L 1 = V 1 / V 2
Need not be, and this value needs to be substantially the same, for example,
0.85 ≦ V 1 L 1 / V 2 L 2 ≦ 1.15
In the range. When the value of this ratio is smaller than 0.85, that is, when the small-diameter side tension is smaller than the large-diameter side tension, loose winding and chrysanthemum winding occur on the small-diameter side end face. Generation, twilling, etc. occur. On the other hand, when the value of the ratio is larger than 1.15, that is, when the small-diameter side tension is larger than the large-diameter side tension, the small-diameter side end face stands out, and a traverse occurs, and a cone-shaped package having a good shape is formed. I can't get it.

In the present invention, when a yarn having low stress and high elongation such as polyurethane elastic yarn is wound around a tapered bobbin, the influence of a difference in winding tension between the large diameter side and the small diameter side of the tapered bobbin is remarkable. If the winding tension on the small diameter side of the bobbin is to be kept at an appropriate level, the winding tension on the large diameter side of the bobbin becomes excessively large, and there is a problem that winding failure such as misalignment occurs frequently. When trying to keep the tension at an appropriate level, the winding tension on the small diameter side of the bobbin is weakened, and there is a tendency for loose winding and chrysanthemum winding to occur frequently.This phenomenon is caused by the increase in the winding amount and the taper angle of the tapered bobbin. However, as described above, by winding while moving the fulcrum guide position of the traverse, the shape of the wound body is good, and a polyurethane elastic yarn wound body excellent in unwinding property can be obtained. is there.
The amount of winding of the elastic wound yarn obtained in the present invention is not particularly limited, and may be a wound yarn having a winding amount of 500 g to 1.5 kg, which is a usual amount of winding, or more. In particular, it is suitable for 1.0 kg or more, and can be suitably used for various fields.

Hereinafter, the present invention will be described specifically with reference to examples, but the present invention is not limited to these ranges. In the examples, the winding tension of the cone-shaped elastic bobbin was evaluated by measuring the unwinding resistance value when unwinding the elastic yarn from the elastic bobbin. The unwinding resistance value in this example was measured using the following unwinding resistance measuring device, and a deviation value of the unwinding resistance value (variation in the unwinding resistance value) was calculated from the obtained numerical value.

The measurement method by the unwinding resistance measuring device and the formula for calculating the deviation value As shown in FIG. 5, the elastic bobbin 11 wound back on the tapered bobbin is held horizontally, at a position 0.46 m from the rear end of the bobbin. The tension of the elastic yarn drawn out at 150 m / min by a pair of rollers 13 and 13 set at a position 0.23 mm away from the plate-like yarn guide 12 through the plate-like yarn guide 12 set at The thickness of the thread layer of the elastic wound thread body 11 is measured by a tension meter 14 (model: PLS-0.2KC, manufactured by Nidec Shinpo Co., Ltd.) set at a position of 0.11 mm from the plate-shaped yarn guide 12. Is measured at each of three points of 40 mm, 20 mm and 5 mm for 30 seconds. From the obtained values of the maximum value, minimum value and average value of the unwinding resistance value, the deviation value of the unwinding resistance value is calculated by the following equation (6). Calculated.

[Example 1]
A parallel cheese-shaped 46.62 tex polyurethane elastic yarn (trade name: Fujibo Spantex, manufactured by Fuji Boseki Co., Ltd.) having a weight of 3.0 kg and wound on a cylindrical bobbin and having no oil agent attached was prepared. . Next, the taper angle α = 3 ° 30 ′, which is the shape value of the bobbin used as the initial setting value, the small diameter of the bobbin = 0.047m, the large diameter of the bobbin C = 0.075m, the bobbin width F = 0.2286m, the large diameter of the bobbin The linear distance E between the end and the winding start position of the large-diameter side winding body is E = 0.015 m, the winding width D is 0.195 m, the linear distance H between the spindle center and the traverse fulcrum guide is H = 0.2 m, and the initial spindle rotation. The number SP0 0 = 24.77 revolutions / sec and the winding number 3.25 between the winding widths at which the traverse guide moves from the large diameter side to the small diameter side of the bobbin were input. The bobbin diameter A at the winding start position of the small-diameter side bobbin of the tapered bobbin calculated from the input initial set value is 0.0493 m, and the bobbin at the winding start position of the large-diameter bobbin of the tapered bobbin. A calculated value of diameter B = 0.0732 m and initial traverse speed I 0 = 1.49 m / sec was obtained. The obtained calculation value and the initial yarn layer thickness G 0 = 0 m of the wound body are substituted into the above-mentioned formulas, Expressions 1 and 2, and the calculation is performed, and the winding speed V 1 = 4 at the small-diameter end surface of the tapered bobbin. .12 m / sec and a calculated value of the winding speed V 2 = 5.88 m / sec at the large-diameter end face of the tapered bobbin were obtained.

Using the speed ratio V 1 / V 2 = 0.70 from the obtained calculation value, substitute the above-mentioned formulas, Expressions 4 and 5 for calculation, and calculate the linear distance between the bobbin large-diameter end surface and the traverse fulcrum guide. X0 = 0.049, -0.392 was obtained, and a positive value was adopted, and the traverse fulcrum guide was moved to a position 0.049 m from the tapered bobbin large-diameter end using a servomotor. Then, the average winding speed of the initial winding speed V 1 at the end surface of the small diameter side winding body of the tapered bobbin = 4.12 m / sec and the initial winding speed V 2 at the large diameter end surface of 5.88 m / sec is 5.0 m / sec. The spindle rotation speed is controlled so as to make second = 300 m / min, and the traverse speed is controlled so as to maintain the wind number 3.25 while the traverse guide moves from the large-diameter side to the small-diameter side. The position of the fulcrum changes with the increase of the yarn layer thickness of the wound body. The linear distance L 2 (m) between the traverse fulcrum guide and the bobbin large-diameter side bobbin end face and the traverse device fulcrum guide and the bobbin small-diameter side The ratio (L 2 / L 1 ) to the linear distance L 1 (m) between the end faces of the winding body is such that the winding speed V 1 (m) of the tapered bobbin on which the elastic yarn is wound on the small diameter side winding body end face. / Sec) and the end of the bobbin with taper on the large diameter side As the winding speed V 2 (m / s) ratio (V 1 / V 2) is equal in and produce polyurethane elastic yarn yarn body 3kg cone shape while controlling.

Appearance inspection of the obtained cone-shaped polyurethane elastic yarn wound body, measurement results of unwinding resistance at yarn layer thicknesses of 40 mm, 20 mm and 5 mm, deviation value of calculated unwinding resistance value and yarn layer thickness of 2 mm or less Table 1 shows the results of inspection of the wound state of the polyurethane elastic yarn in the innermost layer of the above.

From Table 1, the average value of the unwinding resistance value tends to be slightly larger in the range of 3.2 to 3.4, but the deviation value is in the range of 0.15 to 0.16. It was a polyurethane elastic yarn wound body having a good winding property, and both end surfaces of the cone-shaped package were flatly wound, and the appearance was good and the winding state of each yarn layer was good.

[Comparative Example 1]
A traverse fulcrum guide is located at 0.03 m from the tapered bobbin large-diameter end on a tapered bobbin having the same shape value as in Example 1, using a polyurethane elastic yarn of 46.62 tex having the same 3 kg thread winding amount as in Example 1. And a 3 kg cone-shaped polyurethane elastic yarn wound body was produced at a winding speed of 300 m / min using a bobbin-driven cone winding machine without moving.

In the same manner as in Example 1, the appearance of the obtained cone-shaped polyurethane elastic yarn wound body, the measurement results of the unwinding resistance at the yarn layer thicknesses of 40 mm, 20 mm and 5 mm, the calculated deviation value, and the yarn layer thickness of 2 mm Table 2 shows the results of inspection of the winding state of the polyurethane elastic yarn in the innermost layer described below.

From Table 2, the average value of the unwinding resistance value is in the range of 3.9 to 4.2, indicating that the winding start tends to be large and gradually decrease, but the deviation value of the unwinding resistance value is smaller than that of Example 1. The result of the appearance inspection is that the bulge winding or chrysanthemum winding where the end surface protrudes in the bobbin small-diameter side end surface has occurred and the appearance is poor, and a polyurethane elastic yarn winding body having a good unwinding property cannot be obtained. Was.

[Comparative Example 2]
The same as Comparative Example 1 except that the position of the guide fulcrum of the traverse was fixed at 0.11 m from the tapered bobbin large-diameter end face, using a bobbin-driven winding machine at a winding speed of 300 m / min and a cone of 3 kg. A polyurethane elastic wound body having a shape was manufactured.

An appearance inspection of the obtained cone-shaped polyurethane elastic yarn wound body and a measurement result of the unwinding resistance at the yarn layer thickness of 40 mm, 20 mm and 5 mm are calculated, and the deviation value of the unwinding resistance value and the yarn layer thickness of 2 mm or less Table 3 shows the results obtained by examining the state of winding the polyurethane elastic yarn in the innermost layer.

From Table 3, the average value of the unwinding resistance value is almost uniform in the range of 3.7 to 3.8, but the deviation value is larger than that of Example 1, and the result of the appearance inspection is good, Loose winding of the polyurethane elastic yarn occurred in the inner layer, and it was not a polyurethane elastic yarn wound body having a good unwinding property.

(Reference example)
Using the unwinding resistance measuring device described in the example, the unwinding resistance of the 44.62 tex polyurethane elastic yarn wound body of the parallel cheese shape having no oil agent attached thereto and having a winding amount of 3 kg used in Example 1 was measured. The results were measured, and the variation was calculated from the results, and the results are shown in Table 4. The parallel cheese-shaped polyurethane elastic wound body having a winding amount of 3 kg is wound with a bobbin diameter of 0.085 m, a bobbin width of 0.1143 m, a winding width of 0.096 m, and a yarn layer thickness of 0.095 m. The measurement points were 80 mm, 40 mm and 5 mm.

From Table 4, the average value of the unwinding resistance value is non-uniform in the range of 3.1 to 4.2, the deviation value is as large as 0.19 to 1.67, and when the yarn layer thickness is 80 mm, The ballooning is large as shown in FIG. 6, and when the thickness of the yarn layer is 40 mm, although the ballooning state is settled as shown in FIG. 7, the deviation value of the unwinding resistance value is larger than that of the polyurethane elastic yarn wound body of the present invention. Large fluctuation in tension.

The wound body made of the cone-shaped bare polyurethane elastic yarn obtained by the method of the present invention has excellent unwinding property, and there is no poor shape in appearance and no loose winding in the innermost layer of the wound body, and the deviation value of unwinding resistance. And the variation in tension is small. Further, the winding amount of the package can be arbitrarily set, and it is possible to make the winding body larger than usual.

It is a conceptual diagram which added a detection sensor and a control device to a bobbin drive type winder which winds an elastic thread on a bobbin with a taper. It is explanatory drawing which shows the positional relationship and the linear distance of each part of the bobbin with a taper, and the fulcrum guide of a traverse. It is a correlation diagram at the time of moving the linear distance between the tapered bobbin large diameter end face and the fulcrum guide of the traverse continuously according to the change of the thread layer thickness of an elastic thread winding body. FIG. 9 is a correlation diagram when the linear distance between the tapered bobbin large-diameter end surface and the traverse fulcrum guide is intermittently changed according to a change in the yarn layer thickness of the elastic yarn wound body. It is explanatory drawing which shows the positional relationship of an elastic thread winding body, a plate-shaped yarn guide, an unwinding resistance measuring device (tension meter), and a drawer roller when unwinding an elastic thread winding body. It is explanatory drawing which shows the state of ballooning at the yarn layer thickness 0.08m vicinity at the time of unwinding a parallel cheese-shaped elastic bobbin. It is explanatory drawing which shows the state of ballooning at the yarn layer heat 0.04m vicinity at the time of unwinding a parallel cheese-shaped elastic wound thread body.

Explanation of reference numerals

Reference Signs List 1 yarn layer thickness detection sensor of wound body 2 spindle rotation number detection sensor 3 touch roller rotation number detection sensor 4 traverse speed detection sensor 5 thread layer 6 tapered bobbin 7 spindle 8 touch roller 9 traverse device 10 yarn 11 elastic yarn winding Thread 12 Plate-shaped yarn guide 13 Pull-out roller 14 Unwinding resistance measurement device a Traverse fulcrum guide b Small-diameter side bobbin end face of tapered bobbin c Large-diameter side bobbin end face of tapered bobbin α Taper of tapered bobbin Angle A The bobbin diameter at the winding start position of the small-diameter bobbin of the tapered bobbin B The bobbin diameter at the winding start position of the large-diameter bobbin of the tapered bobbin C The large diameter of the tapered bobbin D The winding width E Taper Linear distance between the bobbin large diameter end and the winding start position of the large diameter side wound body F Tapered bobbin A linear distance L 2 traverse fulcrum guide between support guide and the bobbin smaller diameter side winding yarn body end face of the linear distance L 1 traverse between support guide of the traverse from the thickness H spindle center of the yarn layer of the width G winding yarn of the bottle Linear distance between bobbin large-diameter side winding body end face X Linear distance between traverse fulcrum guide and tapered bobbin large-diameter end

Claims (6)

  1. An elastic bobbin wound on a tapered bobbin while traversing the elastic yarn, wherein the average value of the unwinding resistance of the elastic yarn from the elastic bobbin is 3.2 to 3.4 g. Elastic wound thread body.
  2. The elastic thread wound body according to claim 1, wherein the elastic thread is a bare polyurethane-based elastic thread.
  3. When winding the elastic yarn on the tapered bobbin while traversing, the winding speed (V 1 ) of the tapered bobbin at the end surface of the small diameter side bobbin and the winding of the tapered bobbin at the end surface of the large diameter bobbin speed and the ratio of (V 2) (V 1 / V 2), the traverse support point guide and the linear distance between the large-diameter winding yarn body end face of the tapered bobbin (L 2) and the traverse fulcrum guide and the tapered bobbin The traverse fulcrum guide is wound while moving the position of the fulcrum guide so that the ratio (L 2 / L 1 ) of the linear distance (L 1 ) between the end surfaces of the small-diameter-side winding bodies becomes substantially equal. The elastic yarn wound body according to claim 1 or 2.
  4. The ratio of the winding speed at the take-up velocity (V 1) and the larger diameter side winding yarn body end face of the tapered bobbin of small diameter side winding yarn body end face of the tapered bobbin (V 2) and (V 1 / V 2) , The linear distance (L 2 ) between the traverse fulcrum guide and the end surface of the large diameter side bobbin of the tapered bobbin, and the linear distance (L 1 ) between the traverse fulcrum guide and the small diameter side bobbin end surface of the tapered bobbin. ratio and (L 2 / L 1) is, 0.85 ≦ V 1 L 1 / V 2 L 2 elastic the yarn of claim 3 wherein the ≦ 1.15.
  5. When winding the elastic yarn on the tapered bobbin while traversing, the winding speed (V 1 ) of the tapered bobbin at the end surface of the small diameter side bobbin and the winding of the tapered bobbin at the end surface of the large diameter bobbin speed and the ratio of (V 2) (V 1 / V 2), the traverse support point guide and the linear distance between the large-diameter winding yarn body end face of the tapered bobbin (L 2) and the traverse fulcrum guide and the tapered bobbin An elastic bobbin winding, wherein the position of a traverse fulcrum guide is moved so that a ratio (L 2 / L 1 ) of a linear distance (L 1 ) between end faces of the small-diameter-side bobbin bodies becomes substantially equal. Thread manufacturing method.
  6. The ratio of the winding speed at the take-up velocity (V 1) and the larger diameter side winding yarn body end face of the tapered bobbin of small diameter side winding yarn body end face of the tapered bobbin (V 2) and (V 1 / V 2) , The linear distance (L 2 ) between the traverse fulcrum guide and the end surface of the large diameter side bobbin of the tapered bobbin, and the linear distance (L 1 ) between the traverse fulcrum guide and the small diameter side bobbin end surface of the tapered bobbin. ratio and (L 2 / L 1) is, 0.85 ≦ V 1 L 1 / V 2 L 2 ≦ 1.15 a method of manufacturing a elastic the yarn of claim 5, wherein a is.
JP2003334923A 2002-09-30 2003-09-26 Elastic yarn wound body and method of manufacturing the same Pending JP2004142944A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2002286407 2002-09-30
JP2003334923A JP2004142944A (en) 2002-09-30 2003-09-26 Elastic yarn wound body and method of manufacturing the same

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
JP2003334923A JP2004142944A (en) 2002-09-30 2003-09-26 Elastic yarn wound body and method of manufacturing the same
TW93100160A TWI242533B (en) 2003-09-26 2004-01-05 A cone of an elastic yarn and a method for producing the same
AU2004200042A AU2004200042A1 (en) 2003-09-26 2004-01-06 A cone of an elastic yarn and a method for producing the same
EP20040250352 EP1518809A1 (en) 2003-09-26 2004-01-23 A cone of an elastic yarn and a method for producing the same
FR0400661A FR2860221B1 (en) 2003-09-26 2004-01-23 Elastic thread cone and method for making same
MXPA04000721 MXPA04000721A (en) 2003-09-26 2004-01-23 Elastic yarn wound body and method of manufacturing the same.
CNB2004100390812A CN1323919C (en) 2003-09-26 2004-01-29 A cone of an elastic yarn and a method for producing the same
BRPI0400381 BRPI0400381A (en) 2003-09-26 2004-03-02 Cone of an elastic thread wrapped around a thin coil, and method for producing a cone of an elastic thread

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101544322A (en) * 2008-03-27 2009-09-30 欧瑞康纺织有限及两合公司 Method for controlling traversing gear and spinner for manufacturing intersected coiled bobbin
CN104925584A (en) * 2014-03-19 2015-09-23 村田机械株式会社 Yarn winder and winding method
CN110088021A (en) * 2016-12-19 2019-08-02 旭化成株式会社 Polyurethane elastic yarn web body

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101544322A (en) * 2008-03-27 2009-09-30 欧瑞康纺织有限及两合公司 Method for controlling traversing gear and spinner for manufacturing intersected coiled bobbin
CN104925584A (en) * 2014-03-19 2015-09-23 村田机械株式会社 Yarn winder and winding method
CN110088021A (en) * 2016-12-19 2019-08-02 旭化成株式会社 Polyurethane elastic yarn web body

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