JPS6128010A - Method for manufacture yarn at high speed - Google Patents

Abstract

PURPOSE:To obtain yarns with good stability of yarn manufacturing and high- degree processing, by preliminarily oiling a synthetic fiber yarn between a apinneret and the first godet roll, preliminarily interlacing the oiled yarn with air, and interlacing the yarn with air and oiling the interlaced yarn between the final godet roll and winder. CONSTITUTION:A synthetic fiber yarn 1 extruded through a spinneret is passed through at least two or more godet rolls and wound at a high speed. In the process, the yarn 1 is preliminarily oiled with an oiling device 2 provided between the spinneret and the first godet roll 5 as pretreatment, preliminarily intelaced with air in an air interlacing device 3, interlaced with air in an air interlacing device 4, oiled with an oiling device 7 between the final godet roll 6 and a winder as finishing treatment, and wound at a high speed by the winder to give the aimed yarn.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for high-speed spinning of synthetic fibers. More specifically, the present invention relates to a method for entangling and applying an oil agent to obtain a synthetic fiber yarn that has good spinning stability in high-speed spinning of synthetic fibers and stable passability in higher processing steps.

(Prior art) In recent years, in high-speed yarn spinning at yarn speeds of 000 m/min or more, in addition to imparting convergence by applying an oil agent, air entanglement treatment is applied to the yarn before the second winding to further converge the yarn. Methods of imparting properties to stabilize yarn reeling operability and improve stable passability in higher-order processing are being investigated.

For example, JP-A-56-140116 and JP-A-54
A method of applying an oil to the spun yarn as in Japanese Patent No. 125721, passing it through each godet and roll, and performing air treatment between the final godet roll and the winding device, or
As in Japanese Utility Model Publication No. 57 27821, after applying an oil to the spun yarn, it is taken up by a godet roll, air treated between the 1st godet roll and the 2nd godet roll, and then between the final godet roll and the winding. Methods of supplying oil or water, and methods of applying oil to the spun yarn, subjecting it to air treatment, and then subjecting it to a second air treatment between the final godet roller and the winding device are known.

However, in either method, it is not possible to simultaneously satisfy yarn spinning stability and stable passability in higher-order processing steps. In other words, if only the oil is applied between the spinneret and the first godet roller and the oil is allowed to pass through the godet roller, the oil and water will scatter after the application and the amount of adhesion to the final wound product will not be sufficient.

In addition, due to the influence of the scattered oil agent, threads tend to become entangled around the godet roller, reducing operability.

Furthermore, when lubricating is performed in the first stage and then air treatment or air treatment is performed between godet rolls, it is difficult to retain oil and moisture in the final wound yarn because the previously lubricated lubricant is scattered by air. In order to maintain the amount of oil and moisture deposited, it is necessary to increase the amount of oil applied, but in this case, the amount of oil and moisture scattering increases while the yarn passes through the process and during air treatment. In addition, even with the method of applying oil and air treatment between the spinneret and the first godet roller, and then air treatment again before the winding device, there is a lot of scattering of the oil as described above, and a specified amount of oil and moisture adheres to the product yarn. It has the same drawbacks as mentioned above, such as being unable to do so.

As described above, in high-speed silk reeling using conventional equipment, it is difficult to produce yarn that satisfies both reeling operability and high-order operability.

(Problems to be Solved by the Invention) The present invention solves the drawbacks of the prior art and
In a high-speed spinning method in which yarn is wound at m/min or more,
It is an object of the present invention to provide a yarn spinning method that can ensure good yarn spinning stability and improve passing stability in higher-order processing steps.

(Means for Solving the Problem) The problem of the present invention is that the two synthetic fiber yarns are
In high-speed spinning, in which the yarn is wound at high speed after passing through more than one godet roller, preliminary oiling treatment 9 is then performed between the spinneret and the first godet roller, followed by preliminary air entangling treatment as a preparatory treatment.
This is achieved by a high-speed spinning method characterized by carrying out air entanglement first and then oil supply between the final godet roller and the winder as finishing treatments.

The present invention will be explained in detail below using the drawings. FIGS. 2 and 3 are schematic diagrams showing conventional examples. In Fig. 2, the yarn (2) spun from a spinneret (not shown) is lubricated by a lubricating device (2), entangled in an air entangling device (2), and then routed to a first copter roller (2) and a second Godet roller (2). The fibers are then entangled again before a winding device (not shown) and are wound. In addition, in Fig. 2, a lubricating device (■) is provided up to the first copy roller (■), and an air entanglement treatment device (■) and two are installed between the second godet roller (■) and the winding device.
Although the lubrication device (2) is provided in the second stage to provide entangling treatment and application of lubricant, both of them have the above-mentioned defects.

FIG. 1 is a schematic diagram illustrating the method of the present invention.

In the figure, a lubricating device (2) and an air entanglement treatment device (2) are installed in this order between the spinneret and the first godet roller (2), and after preliminary treatment of oil supply and air entanglement treatment is performed, each godet roller (2),
■The finishing process is performed between the second Godet roller ■ and the winding device by installing an air entanglement treatment device ■ and a lubricating device ■, contrary to the preparatory treatment. It is.

The air entanglement treatment device used in the present invention is a generally known air entanglement treatment nozzle.

Examples include air swirl nozzles.

The degree of air entanglement in the pretreatment employed in the present invention is preferably 20@%n or less in terms of the number of entanglements with respect to the yarn, which effectively prevents the scattering of the oil applied in the pretreatment and provides a working environment. The deterioration of the product, etc. can be completely eliminated. or.

Problems caused by excessive entanglement, such as excessive convergence, which results in a cross section that approaches a circular shape, reduces friction on the godet roller, causes large fluctuations in the traveling yarn, and makes spinning properties unstable. Nor. still.

The air pressure employed in the first stage air entanglement process is desirably set in the range of 0.5 to 3.0 vcI112. In the present invention, the number of entanglements refers to the number of unentangled portions of the thread immersed in water, defibrated, and the number of strongly intertwined portions that are not defibrated, expressed as one t.

The lubricating device used in the present invention is preferably a metering guide type lubricating device, that is, a type of lubricating device in which a metering pump discharges lubricant from a guide having a discharge hole and deposits it on the yarn.

Regarding the amount of oil supplied in the preliminary treatment in the present invention,
If the amount of oil supplied during preliminary lubrication is large, the amount of lubricant will increase, so it is desirable that the amount of lubrication during preliminary lubrication be 70% or less of the total amount of lubrication for preliminary and finishing.

Next, the finishing treatment will be described. The air treatment in the finishing process aims to give more entanglement to the final wound yarn, and the oiling treatment aims to add oil and moisture necessary for high-order processing to the final wound yarn. That is. If the final winding yarn has an insufficient number of entanglements or an insufficient amount of oil/water adhesion, operability in higher-order processing will deteriorate, which is something that the finishing treatment of the present invention is intended to solve. The air entanglement treatment pressure in the finishing treatment for this purpose is 30 to 90 kg.
/” is preferable, and the number of entanglements is 18 as the final winding yarn @v
/m or more, preferably the yarn has an oil content of 0.2 to 1% by weight and a water content of 6.0 to 8.0% by weight.

It is preferable to use a water-free straight oil for preliminary lubrication and a water-based emulsion oil for final lubrication. A non-hydrous straight oil agent has a water content of 5% by weight.
Refers to the following oils.

The effects of using a non-water-containing straight oil for preliminary lubrication are as follows.

■ The amount of preliminary lubrication required is small.

■ Eliminates the scattering of moisture during the process, reducing the overall amount of scattering and reducing defects such as product stains.

■ Easily incorporate equipment such as additional heat treatment processes that improve the quality of the final product.

(Example) Next, the present invention will be explained in more detail using examples.

<Example-1> Polyethylene terephthalate fibers having a yarn fineness of 75 denier and a number of filaments of 36 were melt-spun at a spinning temperature of 295°C and treated under the conditions shown in Table 2-1.

The yarn was wound at a yarn speed of 5000 m/min. The lubricant is the first stage.

Water-based emulsion 1 with the oil composition shown in Table 2 for both the second stage
A 0% concentration was applied.

Table 2 A-C that satisfies the present invention makes it possible to produce yarn that satisfies all of the following: scattering of oil, thread passing through godetstrol, and passability to higher-order processes.

On the other hand, in the conventional method, since there is no second-stage oiling process, the high-order passability is poor despite the large number of final entanglements, and there is also a lot of scattering of the oil, which is unsatisfactory.

<Example-2> 6-nylon yarn melt-spun through a spinneret having spinning holes 12 with a hole diameter of 0.3 mm at 4500 m/min
At the time of winding, the treatment was performed as shown in Table 6.

The same aqueous emulsion as in Example 1 was used as the lubricant, and the measurement guide lubricating method was used. However, *1 of Invention Example A
For marks, apply the strainer oil shown in Table 4.77
It is wound from 0 denier thread. The higher evaluation is loom rotation speed 55 Orpm.

50m at 660 rpm and 800 rpm
A total of 600 threads were woven from one thread, and the passability was evaluated.

In A-C, which satisfies the present invention, the oil agent is scattered.

The thread was able to be easily passed through the Godetstrol and in higher processing steps.

On the other hand, the conventional example is the silk spinning process.

Both higher-order processes were unsatisfactory.

Table 4 (Effects of the Invention) As described above, the present invention provides oil supply treatment and air entanglement as a preliminary treatment between the spinneret and the first godet roller, and
Since air entanglement treatment is performed as a finishing treatment between the second godet roller and the winding device, and post-lubricating treatment is performed, the silk reeling operation is reliably stabilized and the amount of oil and moisture adhering to the final winding yarn is maintained. Because you can definitely give a confound with.

It exhibits excellent effects such as improved passability in higher-order processes.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram illustrating a high-speed silk reeling method according to the present invention;
FIGS. 2 and 3 are schematic diagrams showing the conventional high-speed silk reeling process. 2.7: Oil application device 5.6 pieces 1st. Second godet roller 3.4; Air entanglement processing device patent applicant Toshi Co., Ltd. ￥1 time
Leaf 2 Old, $3 Trouble Procedure Amendment

Claims (4)

[Claims] (1) In a high-speed spinning method in which synthetic fiber yarn is wound at high speed through at least two or more godet rollers, a preliminary oiling treatment is performed between the spinneret and the first godet roller, followed by a preliminary air entangling treatment, and then A high-speed spinning method characterized by performing air entanglement treatment between the final godet roller and the winder as finishing treatment, followed by oil supply treatment. (2) The high-speed spinning method according to claim 1, wherein in the first stage pretreatment, the number of entanglements in the preliminary air treatment is 20 or less per meter. (3) Preliminary and finishing lubrication processing is performed by measuring guide lubrication, and the preliminary lubrication measurement is performed in an amount that is 70% or less of the total amount of the preliminary and finishing lubrication measurements, or The high-speed silk spinning method according to item 2. (4) The high-speed spinning method according to claim 1, 2, or 3, wherein a non-water-containing straight oil is used for preliminary lubrication, and a water-based emulsion oil is used for finishing lubrication.