JP2010222112A - Yarn package comprising polyamide monofilament - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a high-quality yarn package comprising a polyamide monofilament highly suppressed in the occurrence of tight pick by suppressing a change in instantaneous tension during unwinding of a yarn, which is formed into a drum-like package without yarn drop to an end surface of a drum. <P>SOLUTION: In this drum-like package comprising the polyamide monofilament, a yarn-to-yarn dynamic frictional coefficient is set 0.5-1.5, and a drum winding width A(mm) is set 90&ge;A&ge;50, thereby forming the drum-like package without yarn drop to the end surface of the drum. Moreover, the change in the instantaneous tension during unwinding of the yarn is suppressed. Thus, the high-quality yarn package comprising the polyamide monofilament highly suppressed in the occurrence of the tight pick can be obtained. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

The present invention relates to a polyamide monofilament yarn package suitable for obtaining a high mesh fabric that requires a high degree of precision, such as a mesh fabric for screen printing and an automobile filter.

  As a polyamide monofilament yarn package, it is usually wound around a package of a pirn winding type or a package of a drum winding type. The yarn wound around a pawn-wrapped package tends to cause a difference in physical properties between the package center part (straight part) and the package end face part (tapered part) due to the value of the shrinkage rate and the lapse of time. Then, since the sink defect of the end face periodic interval called pernbike occurs when it is made into a woven fabric, a drum wound type package is generally used more often for the weft of the woven fabric.

  On the other hand, in the electronics and automobile fields, which have been growing rapidly in recent years, clearer printing performance and higher filter performance are required. Therefore, the woven fabrics woven with monofilaments have become lighter and thinner, and the quality of the woven fabrics has increased. In fact, there is an increasing demand for the realization of uniform monofilaments that do not exhibit the Yokohikake defects, which are the opening spots of fabrics. Yokohiké of the fabric tends to be easily developed due to the influences of thread thickness spots, oil agent adhesion spots, heat shrinkage spots, unwinding tension spots, and the like. Particularly, regarding the unwinding tension fluctuation at the time of yarn unwinding, the tension fluctuation at the time of yarn unwinding becomes larger as the distance of the drum (drum winding width) from the unwinding side to the counter-unwinding side becomes longer.

  However, when forming a monofilament yarn package, if the drum winding width is shortened, there is a problem that the yarn falls on the drum end surface, so-called yarn dropping occurs.

  On the other hand, the following is mentioned as an example which examined how to wind drum-like packages, such as winding width. For example, Patent Document 1 discusses a drum-like package for knitting used when knitting a knitted stocking knitted fabric from elastic yarn and nylon 66 flat yarn. However, when the monofilament is wound up by a method similar to the method described in this document, yarn dropping also occurs, causing a problem that the yarn is caught when the yarn is unwound and the yarn breaks.

  Similarly, in Patent Document 2, a drum-shaped package for knitting used for knitting a knitted stocking knitted fabric from elastic yarn and nylon 6 flat yarn is studied, but a monofilament is wound up by a similar method. Also in this case, thread dropping occurred on the drum end face, making stable winding difficult.

JP-A-7-309530 JP-A-7-257817

  The present invention is intended to solve the above-described problems, and constitutes a drum-shaped package with no yarn falling onto the drum end surface, suppresses instantaneous tension fluctuation during yarn unwinding, It is an object of the present invention to provide a high-quality polyamide monofilament yarn package that is suppressed by the above.

In order to achieve the above object, the present invention adopts the following configuration.
(1) A polyamide characterized in that a yarn dynamic friction coefficient is 0.5 to 1.5 and a drum winding width A (mm) is 90 ≧ A ≧ 50 in a drum-shaped package made of polyamide monofilament. Monofilament drum package.
(2) The polyamide monofilament drum package as described in (1) above, wherein the twill angle is 7.5 to 4.0 degrees.
(3) (1) or (2), wherein the polyamide monofilament yarn has an oil agent adhesion amount of 0.3 wt% to 1.5 wt%, and the yarn fineness is 6 dtex to 60 dtex. The polyamide monofilament drum package described.
(4) The drum end winding diameter B (mm) and the minimum winding diameter C (mm) in the winding thickness direction of the polyamide monofilament package satisfy the relationship of the following formula (I): The polyamide monofilament drum-shaped package according to any one of 3).
3.0 ≧ (B−C) / 2 ≧ 0 (I)
(5) The polyamide monofilament drum package according to any one of (1) to (4), wherein the polyamide monofilament is a nylon 66 monofilament.
(6) The polyamide according to any one of (1) to (5), wherein the polyamide monofilament yarn has an elongation of 30% to 50% and a strength of 4.0 cN / dtex or more. Monofilament drum package.

  According to the present invention, a high-quality polyamide monofilament yarn that constitutes a drum-shaped package with no yarn drop on the drum end face, suppresses fluctuations in instantaneous tension at the time of yarn unwinding, and is highly suppressed in the generation of horizontal marks. You can get a package. Further, the woven fabric obtained by weaving the polyamide monofilament yarn package obtained in this way is useful for screen wrinkle printing applications, filter applications, and the like.

It is package sectional drawing which shows the winding form of a drum-shaped package typically. It is a device schematic diagram showing an unwinding tension measuring device for unwinding yarn from a drum-shaped package.

  Hereinafter, embodiments of the present invention will be described in detail. For the drum-shaped package made of the polyamide monofilament of the present invention, the drum end winding diameter B (mm) in the winding thickness direction, the minimum drum winding diameter C (mm) in the winding thickness direction, and the winding width A (mm) are shown in FIG. The diameter and width at the positions illustrated in the package cross-sectional view schematically showing the drum-shaped package of the present invention.

  The polyamide monofilament yarn used in the present invention has a yarn dynamic friction coefficient of 0.5 to 1.5. By using such a monofilament, the yarn does not fall even in the winding width range defined in the present invention. It can be a drum package. By setting the yarn dynamic friction coefficient to 0.5 or more, it becomes possible to form a drum package without the yarn dropping from the drum end surface when the traverse is turned back. Further, by setting the yarn dynamic friction coefficient to 1.5 or less, the occurrence of scum during weaving can be suppressed, and scum remaining inside the woven mesh can be prevented. As a more preferred range, the yarn dynamic from the drum end surface and the scum suppressing effect can be obtained by setting the yarn dynamic friction coefficient to 0.7 to 1.0. On the other hand, when the yarn dynamic friction coefficient is less than 0.5, the frictional force when the yarn is folded back is low, so that the yarn falls from the drum end surface, and the yarn breakage and the yarn unwinding property during weaving become unstable. Therefore it is not suitable. In addition, if the yarn dynamic friction coefficient exceeds 1.5, thread drop from the drum end surface can be suppressed, but a large amount of scum is generated due to abrasion resistance between the loom parts and the yarn during weaving. is there.

  The drum-shaped package made of the polyamide monofilament of the present invention is characterized in that the winding width A (mm) is 90 ≧ A ≧ 50. When the winding width A (mm) is A <50, the winding diameter of the drum when winding the same weight becomes too large, the number of times the yarn is traversed per unit time increases, It is not suitable for practical use because troubles of the traverse device are likely to occur. On the other hand, in the case of A> 90, since the distance (drum winding width) of the drum from the unwinding side to the anti-unwinding side becomes too long, the instantaneous tension fluctuation at the time of unwinding becomes large, and the fabric is distorted. Is unsuitable because it tends to occur.

  The twill angle is preferably in the range of 4.0 to 7.5 degrees. If the twill angle is too small, the yarn length exposed on the drum end surface will be long, and there may be conspicuous unevenness due to the difference in partial shrinkage rate, and the end surface of the drum tends to swell easily. Thread unraveling tends to become unstable, such as thread scraping due to friction between the end face portion and the packing material during drum transportation, and loop breakage during yarn unwinding. If the twill angle is too large, the amount of yarn collected on the end face of the drum-shaped package tends to increase, and the end of the drum tends to be in an ear-high state. The tension difference and the release / reduction difference are increased, and the sink-like spots are large, and the number is easily increased.

  Furthermore, the traverse yarn length of the drum-shaped package made of the polyamide monofilament of the present invention is preferably 1.1 to 2.0 m. One traverse yarn length represents the winding yarn length per reciprocation of the traverse. If one traverse yarn length is too long, the yarn length exposed on the drum end surface will be too long, resulting in a partial release rate difference. Sink-like unevenness tends to be noticeable. On the other hand, if the length is too short, the instantaneous tension fluctuation during winding is large, the amount of yarn accumulated in the drum end face turn-back portion tends to increase, and the tension fluctuation during unwinding tends to increase.

The drum-shaped package made of the polyamide monofilament of the present invention is capable of winding up evenly without the end face portion of the drum being swelled by suppressing yarn dropping. In the present invention, the drum end winding diameter B (mm) and the drum minimum winding diameter C (mm) in the winding direction of a single drum can be wound so as to satisfy the relationship of the following formula (I). It is preferable to wind up to be in this range because the yarn unwinding property from the drum becomes even better.
3.0 ≧ (BC) / 2 ≧ 0 (I)

  The drum-shaped package in which B and C have such a relationship can be realized by means such as slowing down the traverse folding speed. In other words, (BC) / 2 can be reduced by slowing down the traverse folding speed. The traverse angle from the beginning of winding to the end of winding does not need to be constant, and it is instantaneously performed to oscillate several percent with respect to the central value of the traverse angle or to avoid a ribbon band. The mean angle value from the beginning to the end of the winding is within the scope of the present invention, and may be gradually reduced or gradually increased by about ± 20% with respect to the central twill angle for the purpose of further improving the drum form. As long as

  The drum-shaped package of the present invention is a high-quality polyamide monofilament yarn package in which the yarn does not easily fall off as described above, and the occurrence of horizontal shrinkage is highly suppressed. In particular, the package is rolled up and is 0.5 kg or more. It is effective in such a case, and particularly effective in the case of 0.7 kg or more. The upper limit is not limited, but usually 3 kg or less is used.

  In the present invention, it is necessary to control the yarn dynamic friction coefficient of the polyamide monofilament yarn within the above range. However, as a method of adjusting the yarn dynamic friction coefficient, it is appropriately adjusted by selecting the type and amount of the oil agent. can do.

  Specifically, there is a method of adjusting the yarn dynamic friction by changing the smoothing agent component and the emulsifier component in the oil component applied to the yarn. As the smoothing agent component, ester type, mineral oil type, ether ester type smoothing agent, ether type nonionic surfactant having polyoxyalkylene group in the molecule, polyhydric alcohol partial ester type nonionic surfactant, Examples include polyoxyalkylene polyhydric alcohol fatty acid ester type nonionic surfactants. When a smoothing agent having a high molecular weight is selected, the yarn dynamic friction coefficient tends to increase, and when a low molecular weight is selected, the yarn dynamic friction coefficient tends to decrease.

  As the oil agent adhesion amount, it is preferable to have an oil agent adhesion amount of 0.3 wt% to 1.5 wt% per yarn weight. When the amount of the oil agent is less than 0.3% by weight, the smoothness of the yarn is deteriorated, and the surface of the yarn is scraped during weaving, so that a monomer-like precipitate called scum remains inside the fabric mesh. Is appropriate. On the other hand, if the amount of the oil agent exceeds 1.5% by weight, the oil agent adhering to the surface of the yarn is scraped during weaving, and the oil agent component in the form of gel tends to remain inside the mesh of the woven fabric. This is inappropriate because the accumulation of oily dirt on the godet roller surface of the machine becomes severe. More preferably, the oil agent adhesion amount is 0.5 wt% to 1.0 wt% per yarn weight. The yarn dynamic friction coefficient tends to be higher as the amount of oil applied is higher and lower as the amount of oil is lower. Therefore, the amount of applied oil may be determined appropriately so as to obtain a desired yarn dynamic friction coefficient.

  Examples of the polyamide monofilament resin used in the present invention include polyamide monofilaments composed of polycapramide, polyhexamethylene adipamide, polydodecanoamide, polyhexamethylene azelamide, and the like. In particular, nylon 6 (polycapramide) monofilament and nylon 66 (polyhexamethylene adipamide) monofilament are preferable as the polyamide monofilament for silk fabric. More preferably, nylon 66 monofilament having good heat resistance and chemical resistance is preferable.

  Nylon 66 used in the present invention is substantially composed of polyhexamethylene adipamide polymerized from hexamethylenediamine and adipic acid, so long as the properties of polyhexamethylene adipamide are not impaired. A polymerization component and an additive component may be included. For example, polyamides, diamides, dicarboxylic acids and the like having different methylene chain lengths can be copolymerized in a small amount of several percent, or added by means such as chip addition during melt spinning. Specific additives include diamide compounds typified by ethylenebisstearic acid amide, dicarboxylic acid compounds typified by isophthalic acid, and other additives such as nylon 6 (lactam), nylon 610, and nylon 612. Examples thereof include polyamide.

  The viscosity of the polyamide chip used in the present invention is preferably 2.5 to 3.2, more preferably 2.6 to 2.9, as measured by a 98% sulfuric acid relative viscosity measurement method.

  Further, matting agents, pigments, light stabilizers, heat stabilizers, antioxidants, antistatic agents, dyeing improvers, antibacterial agents and the like may be blended with the polyamide used in the present invention as necessary.

  The yarn cross-sectional shape may be a round cross-section, a Y-shaped cross-section, a T-shaped cross-section, a flat cross-section, or a shape obtained by further deforming them.

  The polyamide monofilament yarn used in the present invention has an elongation of 30% to 50% because it is used in high mesh fabric applications that require high precision such as mesh fabric for screen printing and automobile filters. The strength is preferably 4.0 cN / dtex or more. Further, the fineness is preferably 6 to 60 dtex for practical use.

  Such adjustment of elongation and strength can be usually performed by a known method.

  Hereinafter, the present invention will be described more specifically with reference to examples. In addition, the physical-property value in an Example was measured by the method described below.

(1) Yarn Yarn Dynamic Friction Coefficient The yarn yarn dynamic friction coefficient in the present invention uses a running yarn method dynamic friction measuring device, an automatic balance type recorder (AS13 type) manufactured by Shinsei Tsushin Kogyo and a U gauge UT type manufactured by Shinsei Tsushin. The specimen was 300 m long, the measurement speed was 100 m / min, the balancer weight was 5 g, and ATT1 / 2.5, and the U gauge running tension of the yarn was measured. The yarn dynamic friction coefficient μ was calculated by the following equation, using the tension (T2) when the yarn was twisted twice in the S twist and the tension (T1) when the yarn was not twisted. T2 / T1 = e ^μ2πnsinβ
μ = Log (T2 / T1) × 1 / 2πn sin β · Loge
T1: Tension when the yarn is not twisted T2: Tension when the yarn is twisted n: Number of twists × 2-1
β: twist angle e: 2.1833

(2) Yokohike Weaving is used to design a weaving design of 250 warps / ２．５ (2.54 cm) and 252 wefts / 吋 (2.54 cm). Observations were made for differences. A state where there is no squeak, ◎ a state where a slight squeak is seen (weak level), a state where squeeze is seen intermittently (medium level), △, a state where strong squeak is seen intermittently (strong level) × And determined in 4 stages.

(3) Unwinding tension fluctuation value The unraveling tension fluctuation value was measured by the apparatus shown in FIG. The drum package 1 is fixed, and the yarn Y, which is a nylon 66 monofilament, is unwound at a unwinding distance L20 cm and a unwinding speed of 800 m / min. When the unraveled traveling yarn Y is passed through the yarn path guide 2, the thread path guide 2 ′, the tension meter 3, and the thread path guide 2 ″, and is fed at 800 m / min by the yarn feed rollers 4 and 4 ′. At the same time, the suction gun 5 is sucked. The tensiometer 3 is connected to an electric strain gauge, and the electric signal is averaged by an integrator through a conducting wire, and the data is recorded in a recorder. This test was performed for 3 minutes, and the difference between the minimum tension value and the maximum tension value of the 2400 m yarn path was defined as the tension fluctuation value. In addition, the temperature and humidity during measurement were 25 ° C. and 60% RH.

(4) Thread drop The yarn drop of the end surface portion of the drum package 1 was observed. When the state where the yarn is not dropped is ◯, when the yarn length is 10 mm or less and when the yarn is dropped is 2 or less, Δ or Δ is not satisfied, for example, when there are 3 or more yarn dropping points The state was judged as x and 3 levels.

(5) Scum A monofilament having a thread length of 20 m is hooked 30 times in parallel at a pitch of 0.3 mm on two gripping rods opposed at an interval of 30 cm, and fixed in a tension state with a total load of 3 g. The sample was rubbed for 150 minutes at a speed of 400 times / minute through a slidable rubbing wing placed at the center of the scum, and the amount of scum adhering to the wing was observed. The state in which white powder scum was hardly generated was determined in three stages: ◯, the state in which white powder scum was small Δ, and the state in which white powder scum was large x.

(6) Amount of oil agent A sample of 10 g is precisely weighed, immersed in normal hexane at 15 ° C., extracted for 10 minutes, and after extraction, the normal hexane is removed and dried. The oil agent adhesion amount was calculated.

(7) Stain of godet roller After winding the first godet roller 3.5 times, heat treatment is performed 4.5 times on the second godet roller heated to 170 ° C. and 4.0 times between the first godet roller and the second godet roller After stretching, the soil condition of the second godet roller after winding 17 decitex and 1 filament for 48 hours at a winding speed of 3000 m / min was observed. The godet roller was evaluated in three grades, with ◯ being almost unstained, △ being slightly soiled, and x being severely soiled.

(8) 98% sulfuric acid relative viscosity (ηr)
The number of seconds at 25 ° C. of the following solution was measured with an Ostwald viscometer and calculated according to the following formula. When 98% concentrated sulfuric acid (T1) and 98% concentrated sulfuric acid (T2) dissolved so that the sample concentration becomes 1 g / 100 ml,
(Ηr) = T1 / T2

[Examples 1 to 3, Comparative Examples 1 and 2]
Nylon 66 resin with sulfuric acid relative viscosity of 2.80 is melted at 295 ° C., and the yarn is discharged from a spinneret in which discharge holes having a diameter of 0.6 mm in the diameter of the nozzle hole are arranged in a circle. After supplying water vapor to the spinneret from the heated gas flow path heated by the flow rate at 250 ° C. and 100 Pa, the yarn is cooled by a cooling device in which cooling air is emitted from one direction of a total length of 1500 mm, and an oiling device using an oiling roller method The first godet roller and the second godet roller are subjected to a heat treatment 4.5 times on the second godet roller heated to 170 ° C. After being stretched 4.0 times, the cam traverse type winding device is wound at a winding speed of 3000 m / min, 17 decitex, 1 step Nylon 66 monofilament yarn of lament, drum-shaped nylon 66 having a traverse yarn length of 1.4 m, a winding width of A 70 mm, a twill angle of 5.7 degrees, an oil agent adhesion amount of 0.6 to 0.7% by weight, and a winding amount of 1.0 kg A monofilament package was obtained.

  As shown in Table 1, in Example 1 in which the yarn dynamic friction coefficient was adjusted to 0.5, a thread having a length of about 5 mm was dropped at one place in the innermost layer portion of the drum end face with a winding thickness of 10 mm. It was not a problem level. In Example 2 in which the yarn dynamic friction coefficient was adjusted to 0.8, both yarn dropping and scum could be suppressed, and the horizontal distortion was good. Further, in Example 3 in which the yarn dynamic friction coefficient was adjusted to 1.5, a small amount of scum, which was thought to be caused by the high abrasion resistance, was generated, but this was not a problem level.

  On the other hand, in Comparative Example 1 in which the yarn dynamic friction coefficient is adjusted to 0.3 as a comparative example, yarn drop defects at the drum end surface occur frequently, and yarn catching at the drum end surface occurs during yarn unwinding, and the unwinding tension Fluctuation was great, and I could not get satisfactory Yokohike quality. Further, in Comparative Example 2 in which the yarn dynamic friction coefficient was adjusted to 2.0, although there was no yarn dropping from the drum end surface, a large amount of scum was generated due to excessive abrasion resistance, and satisfactory Yokohake quality was achieved. I couldn't get it. In addition, the yarn dynamic friction coefficient was changed by adjusting the molecular weight of the ester-based smoothing agent that is a component of the oil agent applied to the yarn.

[Examples 4 to 8, Comparative Examples 3 and 4]
Nylon 66 resin with sulfuric acid relative viscosity of 2.80 is melted at 295 ° C., and the yarn is discharged from a spinneret in which discharge holes having a diameter of 0.6 mm in the diameter of the nozzle hole are arranged in a circle. After supplying water vapor to the spinneret from the heated gas flow path heated by the flow rate at 250 ° C. and 100 Pa, the yarn is cooled by a cooling device in which cooling air is emitted from one direction with a total length of 1500 mm, and an oiling roller type oiling device The first godet roller and the second godet roller are subjected to a heat treatment 4.5 times on the second godet roller heated to 170 ° C. After being stretched 4.0 times, the cam traverse type winding device is wound at a winding speed of 3000 m / min, 17 dtex, 1 Nylon 66 monofilament yarn Iramento, oil adhesion amount 0.6 to 0.7 wt%, the yarn Itodo friction coefficient from 0.6 to 0.8, to give a drum-like nylon 66 monofilament package winding amount 1.0 kg. As shown in Table 2, the winding width A is fixed to 70 mm, the traverse angle is changed to change the traverse yarn length to 1.5 m, and the value of (BC) / 2 to 0.5 mm (Example 4) 1 traverse yarn length of 1.4 m, (BC) / 2 value of 1.5 mm (Example 5), 1 traverse yarn length of 1.3 m, (BC) / 2 value of 2.9 mm ( A drum-shaped package of Example 6) was obtained. The value of (BC) / 2 was adjusted by changing the traverse folding speed.

  In Example 4, the unwinding tension fluctuation could be suppressed, and the horizontal distortion quality was also good. Also in Example 5, the unwinding tension fluctuation could be suppressed and the horizontal shrinkage quality was also good. In Example 6, the amount of yarn accumulated on the end surface of the drum-shaped package is large, the end of the drum is in an ear height state, and the unwinding tension difference between the drum end surface and the straight portion at the moment of unwinding tends to increase slightly. Yokohike was also seen.

  Further, Example 7 in which 1 traverse yarn length was 1.3 m, winding width A was 80 mm, and twill angle was 5.7 degrees, 1 traverse yarn length was 1.4 m, winding width A was 60 mm, and twill angle was 5.0 degrees. Even in Example 8, it was confirmed that the horizontal shrinkage quality was good.

  On the other hand, in Comparative Example 3 in which the winding width A is 100 mm and Comparative Example 4 in which the winding width A is 110 mm as comparative examples, the distance of the drum from the unwinding side to the anti-unwinding side becomes too long. The momentary fluctuations in tension increased, and satisfactory horizontal quality could not be obtained. Note that the traverse yarn length and traverse angle of the drum-like nylon 66 monofilament package were changed depending on the number of rotations of the cam traverse. The winding width A was changed by changing the swing width of the cam traverse. Since the traverse angle is an angle at which the yarn is traversed with respect to the winding shaft, it is determined by the relationship between the length of one traverse yarn and the winding width A.

[Examples 9 to 11]
Nylon 66 resin with sulfuric acid relative viscosity of 2.80 is melted at 295 ° C., and the yarn is discharged from a spinneret in which discharge holes having a diameter of 0.6 mm in the diameter of the nozzle hole are arranged in a circle. After supplying water vapor to the spinneret from the heated gas flow path heated by the flow rate at 250 ° C. and 100 Pa, the yarn is cooled by a cooling device in which cooling air is emitted from one direction of a total length of 1500 mm, and an oiling device using an oiling roller method The first godet roller and the second godet roller are subjected to a heat treatment 4.5 times on the second godet roller heated to 170 ° C. After being stretched 4.0 times, the cam traverse type winding device is wound at a winding speed of 3000 m / min, 17 decitex, 1 step Nylon 66 monofilament yarn Lament gave winding width A70mm, yarn Itodo friction coefficient from 0.6 to 0.8, a drum-shaped nylon 66 monofilament package winding amount 1.0 kg. As shown in Table 3, in Example 9 in which the oil agent adhesion amount was 0.3% by weight, a small amount of scum that seems to be caused by low smoothness of the yarn was generated, but this was not a problem level. It was. In Example 10 in which the oil agent adhesion amount was 0.7% by weight, scum that seems to be caused by low smoothness of the yarn and generation of scum in which the oil agent adhering to the surface of the yarn was shaved and turned into a gel were also generated. There was almost nothing, and the horizontal shrinkage was also good. In Example 11 in which the amount of oil agent adhered was 1.5% by weight, the godet roller surface was slightly soiled, and the oil agent adhering to the surface of the yarn was shaved and a small amount of scum was formed as a problem. It was not a level. In addition, the oil agent adhesion amount of the drum-like nylon 66 monofilament package was changed by the number of rotations of the oiling roller.

  The present invention relates to a yarn package made of polyamide monofilament. More specifically, the present invention relates to a yarn package made of a polyamide monofilament that improves the quality of a fabric by adopting a yarn package configuration that can suppress fluctuations in unwinding tension during yarn unwinding.

A: Winding width B: Drum end winding diameter in the winding thickness direction C: Drum minimum winding diameter in the winding thickness direction 1: Drum package 2, 2 ′, 2 ″: Yarn guide 3: Tension meter 4, 4 ′ : Yarn feed roller 5: Suction gun Y: Yarn

Claims (6)

  A polyamide monofilament drum-shaped package comprising a polyamide monofilament having a yarn dynamic friction coefficient of 0.5 to 1.5 and a drum winding width A of 50 mm to 90 mm.   2. The polyamide monofilament drum-shaped package according to claim 1, wherein the twill angle is 7.5 to 4.0 degrees.   3. The polyamide monofilament drum-like shape according to claim 1, wherein the polyamide monofilament yarn has an oil agent adhesion amount of 0.3 wt% to 1.5 wt%, and the yarn fineness is 6 dtex to 60 dtex. package. The drum end winding diameter B (mm) and the drum minimum winding diameter C (mm) in the winding thickness direction of the polyamide monofilament package satisfy the relationship of the following formula (I). A polyamide monofilament drum-shaped package according to claim 1.
3.0 ≧ (B−C) / 2 ≧ 0 (I)   The polyamide monofilament drum-like package according to any one of claims 1 to 4, wherein the polyamide monofilament is a nylon 66 monofilament.   The polyamide monofilament drum-like package according to any one of claims 1 to 5, wherein the polyamide monofilament yarn has an elongation of 30% to 50% and a strength of 4.0 cN / dtex or more.

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