KR100887804B1 - Production method of polyester filament internally bonded sewing thread - Google Patents

Abstract

A method for manufacturing internally bonded sewing thread made of polyester filament is provided to improve productivity by minimizing an error rate. A method for manufacturing internally bonded sewing thread made of polyester filament comprises the following steps of: twisting polyester multi filament main yarn(10) to a S direction by using a high speed TFO twister; dividing a yarn of a 1 piece by passing though three induction members(6); combining a polyester filament core yarn(20) with the main yarn by using a combining device; winding the combined yarn on an aluminum bobbin(4); winding braiding(30) into a Z direction on the bobbin; and heating up the twisted braiding through a high pressure and high temperature heater in 150 - 180°C for 20-25 minutes.

Description

Production method of polyester filament internally bonded sewing thread

The present invention relates to a method of manufacturing polyester filament internal adhesive sewing thread, and more particularly, to a polyester filament internal adhesive sewing thread that can be produced in a stable and large quantity in terms of quality using polyester multifilament as the main yarn and screening. It is about.

In general, polyester filament internal adhesive sewing thread (hereinafter referred to as "polyester sewing thread") has superior initial modulus, fatigue resistance, light fastness and acid durability (acid resistance), and high glass transition temperature compared to nylon internal adhesive sewing thread. It has high safety and has excellent creep and durability.

For this reason, the polyester sewing thread has been used as a replacement for expensive nylon sewing thread, and has reached many stages of manufacture and use.

In manufacturing the polyester sewing thread and nylon sewing thread as described above, a method of incorporating bond screening yarns into three main yarns is used.

A method for manufacturing the internally-adhesive sewing thread using a conventional yarn, nylon yarn, is disclosed in US Pat. No. 5,039,31 or US Patent No. 2713242, and the nylon internally-adhesive sewing thread manufactured using the manufacturing methods disclosed in the above patents. It has been used for sale.

However, the method of manufacturing the nylon internally-bonded sewing thread disclosed in the above patents is complicated and the equipment price is very expensive, and the speed of the ring yarn is low speed (5000 RPM to 8000 RPM), and low speed is required to obtain stable quality even in operation. Because of the need to be twisted in the manufacturing cost reduction due to mass production had a problem.

In addition, when the main yarn is made of polyester multifilament yarn using the manufacturing method of the above-mentioned internally-adhesive sewing thread, it was not stable in the quality of the internally-adhesive sewing thread manufactured, and showed a high defect rate.

In addition, although the manufacturing method of the polyester internally-attached sewing thread disclosed in Korean Patent No. 500321 has been commercialized to some extent, there is a problem in that the manufacturing cost is reduced due to mass production because many defect rates are generated during manufacturing. There was this.

In addition, since the conventional internally-adhesive sewing thread manufacturing method using the compound twister type that simultaneously twists the premiere and the jointed joint has a ring type, the number of spindles used as the premiere at the top should be tripled in the number of spindles that can be produced thereby. However, there was a limit in manufacturing a machine with a few spindles.

On the other hand, the bonding strength of the main yarn and the screening at the time of weaving polyester filament yarn, according to U.S. Patent No. 5,039,31, when the main yarn is a polyester multifilament yarn, the melting point is low melting point yarn 170 ℃ or less melting point 130 ℃ to 165 It is said that the temperature is good, but the melting state is unstable at the above temperature, and the bonding strength decreases significantly after dyeing because general polyester dyeing is performed at 130 ° C and 140 ° C so that the low-melting yarn melted during the dyeing process can start softening again. There was a problem that often occurs.

An object of the present invention for solving the above problems is to reduce the defect rate that can be generated when manufacturing the polyester filament inner adhesive sewing thread to the minimum to improve the productivity to enable mass production, bonding force even during the post-process An object of the present invention is to provide a method for manufacturing a polyester filament internally adhesive sewing thread which can increase productivity by preventing separation of main yarns and screening due to a decrease of.

According to an embodiment of the present invention for achieving the above object, using a TFO twister and a ring twister in a method for producing a polyester filament inner adhesive sewing thread for producing a large number of internally bonded sewing yarn with a polyester filament yarn The method of claim 1, further comprising: winding each strand of the polyester multifilament main yarn wound around each of the three first tufts in a S direction through a high-speed TFO twisting machine to wind the first bobbin; The yarn of three strands of twisted main yarn is separated from the first bobbin to penetrate the three outer holes of the induction member and divided into one thread. Passing through the inner hole; Passing through the combiner the screening of the three main yarns unwrapped from the first bobbin and the low melting point polyester filaments unwound from the second tuft; Twisting three main yarns and one strand of the screen penetrating the combiner with a flue of 200 TPM or less in the Z direction to wind the second bobbin of the aluminum bobbin; Winding the yarn wound around the second bobbin to a third tuft by high-speed twisting again with a predetermined flue in the Z-direction using a high-speed TFO twisting machine; Winding the plywood wound on the third tuft to a third bobbin of an aluminum bobbin for setting; And heating the plywood wound on the third bobbin at 150 to 180 ° C. for 20 to 50 minutes through a high temperature and high pressure heater.

According to an embodiment of the present invention, the braided yarn wound at 200 TPM or less and wound on the second bobbin is wound at 200 TPM or more using a high speed TFO twisted yarn and wound on the third bobbin.

According to the exemplary embodiment of the present invention, the thickness of the three main yarns twisted in the S direction is 30 to 2000 deniers, respectively, and the twist range is 100 to 1000 TPM.

According to an embodiment of the invention, the screening is made of 1 to 5 strands and the melting point is 180 ℃ or more.

By using the manufacturing method of the polyester filament inner adhesive sewing thread according to the present invention as described above, it is possible to manufacture the product with a significantly lower defect rate than the manufacturing method currently being carried out polyester polyester filament inner adhesive sewing thread, By reducing the defective rate and maintaining the quality of the sewing thread, it not only contributes to the stabilization of quality but also greatly reduces the manufacturing cost due to productivity improvement.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic diagram showing a method of twisting the main yarn in the manufacturing method of the polyester filament inner adhesive sewing thread according to the present invention, Figure 2 is a schematic diagram showing a joint method of the main yarn and the screening, Figure 3 is a 4 is a schematic view showing a twisting method, and FIG. 4 is a schematic view showing a method of winding the twisted twisted yarn on a setting aluminum bobbin, and FIG. 5 is a schematic view showing a heating state of the twisted yarn through a heater.

Looking at the manufacturing method of the polyester filament internal adhesive sewing thread for producing a large amount of internal adhesive sewing yarn using polyester filament yarn as the main yarn 10 using a TFO yarn and a ring yarn as follows.

First, as shown in FIG. 1, each strand of the polyester multifilament main yarn 10 wound on three first tufts 1 is respectively wound in a S direction (counterclockwise) through a TFO twister (not shown). It is twisted and wound around the first bobbin 2.

Here, the thickness of the main yarn 10 of the three strands are twisted in the S direction is 30 to 2000 denier, respectively, during the twisting range is to be 100 to 1000 TPM.

Then, the main yarn 10 of the three strands wound on the first bobbin (2) is used again to loosen the three strands as shown in FIG.

The reason for releasing and using three strands of the main yarn 10 wound on the first bobbin 2 as described above is to use three rings at the top in the case of the first combination and the first combination using a general ring type twisting machine. This is because three times the number of drive spindles required to premiere each is limited, while the number of lower spindles that make the final double yarn is limited.

For example, a typical nylon bond device is equipped with up to 180 spindles each capable of premiering at the top and 60 joinable spindles at the bottom.

Therefore, when using the above apparatus, Z-Lead 500TPM, 5000rpm, and combined the 150 denier 3-ply, the daily output was only 43kg level.

However, in the case of using the method as shown in FIG. 1, since the premiere is already finished in the high speed gunpo gun twisting machine, the same number of lower spindles can be used as the upper spindle, so harvesting (for example, harvesting in all the devices that are combined only) , The lower 180 weight) can be mass-produced as much as the number of spindles at the bottom, and even three times more productivity than conventional nylon bond yarns even if the same year without the high speed replay.

As shown in FIG. 2, the three main yarns 10 of the first bobbin 2 are twisted in the S direction (counterclockwise direction) as shown in FIG. 1. Unwind in one strand from each other so as to penetrate the three outer holes 6-1 of the guide member 6, respectively.

In addition, the screening 20 of the low melting polyester filament wound on the second tuft 5 allows the inner hole 6-2 of the guide member 6 to penetrate.

Here, the screening 20 is made of 1 to 5 strands of polyester filament yarn, it is preferable that the melting point is 180 ℃ or more.

The three main yarns 10 and the screening 20 penetrating the outer hole 6-1 and the inner hole 6-2 of the guide member 6 are coupled to each other by passing through the combiner 7. do.

At this time, the three main yarn 10 is arranged in a form surrounding the low melting point screening 20 in the center.

The three main yarns 10 and one strand of the screen 20 coupled to each other through the coupler 7 are plyed together with a low ductility of 200 TPM or less in the Z direction (clockwise) at the lower end of the ring twisting machine, and is made of aluminum. The bobbin is wound around the second bobbin 4.

Then, as shown in FIG. 3, the plywood 30 wound around the second bobbin 4 is twisted again to a predetermined level in the Z direction by using a high speed TFO twister and wound around the third tuft 11.

That is, the braided yarn 30 wound to the second bobbin 4 with a low flue rate of 200TPM or less is wound into a high flue or target flue of 200TPM or more using a high speed TFO twister and wound onto the third tuft 11.

As described above, the reason why the year difference in two steps in the plywood 30 is, if the production amount, even if only two times or more, if you are not too old, do not need to re-open the kite in high speed tupowan go directly to the oven This is because post-processing can be reduced.

In addition, the said target year can also be determined according to the needs of production.

Then, as shown in FIG. 4, the plywood 30 wound on the third tuft 11 is wound on a third bobbin 8 of a setting aluminum bobbin for heating and post-process movement.

Accordingly, the braided yarn 30 wound on the third bobbin 8 is 20 at 150 to 180 ° C., which is a temperature below the complete melting point of the screening 20 through the high temperature and high pressure heater 9, as shown in FIG. 5. The main yarn 10 of the plywood 30 which is heated to 50 minutes and is twisted by the heated screen 20 is strongly coupled to the screen 20.

Here, half of the year's target was made to produce double yarn, which again proved to be more than twice as productive at high speed tupowan coalescing.

In one example, when working with the same target year through the method according to the present invention, the lower 180 weight work, which is the same device, was more than three times more productive at the end of the double yarn process, thereby further combining the target year as already completed. Is not necessary.

Here, the target value year is only 1/5, and the high-speed tupo gun again, the remaining 4/5 is possible to increase the productivity of five times, and overall will have more than 15 times the increase in production.

Looking at the embodiment of the method for producing a polyester filament inner adhesive sewing thread according to the present invention as described above through the comparative example.

[Comparative Example]

Looking at the ring type applied to the conventional twisted yarn type (the method of simultaneous twisting the super-yeon and jointed) for the production of internal adhesive sewing thread will be as follows.

For example, the number of lower spindles is 60 when the number of upper spindles of a commonly used twister is 180.

Therefore, when 150 denier 3-ply internal adhesive sewing thread is produced at 500 TPM at 5000 RPM, even if it is continuously operated for 24 hours a day, the total daily output is 720 GRAM per spindle and 43.20 kg per unit.

Therefore, the number of spindles that can be produced at the bottom of the twisting machine has been limited because the number of spindles used as the premiere at the top should be three times the number of machines.

EXAMPLE

Using the manufacturing method according to the present invention, after 100 TPM with the same main yarn at the same RPM at the bottom of the ring twister of the same 60 spindles as the comparative example, the daily output at the time of additional 400 TPM 20000 RPM in the high-speed TFO twister The total amount was 216KG, and the yield thereof was five times higher than the comparative example.

In addition, since there is no need for an additional three-fold premiere spindle for premiere at the top of the ring twister, it is possible to mount multiple jointing spindles at the bottom.

E.g. When produced by the method according to the present invention using a German manufacturer's Almar ring weaving machine (180 lower spindles), the total daily output per unit was 648KG, showing a productivity improvement of more than 15 times compared to the existing production method. .

Although the above has been shown and described with respect to the preferred embodiments of the present invention, the present invention is not limited to the above-described embodiment, in the technical field to which the present invention pertains without departing from the spirit of the invention as claimed in the claims. Various modifications can be made by those skilled in the art, and such changes will fall within the scope of the claims set forth.

1 is a schematic diagram showing a method of twisting main yarns in a method of manufacturing a polyester filament inner adhesive sewing thread according to the present invention;

Figure 2 is a schematic diagram showing a joint method of judging the main yarn.

Figure 3 is a schematic diagram showing a continuous shooting method at the time of the envoy.

4 is a schematic view showing a method of winding the twisted plywood on the aluminum bobbin for setting.

Figure 5 is a schematic diagram showing the heating state of the envoys through the heater.

* Brief description of symbols for the main parts of the drawings *

1: first skein 2: first bobbin

3: guide member 4: second bobbin

5: second skein 6: guide member

6-1: Outer Hole 6-2: Inner Hole

7: Combiner 8: Third bobbin

9: burner 11: third skein

10: main yarn 20: screening

30: envoy

Claims (4)

In the manufacturing method of the polyester filament internal adhesive sewing thread for producing a large amount of internal adhesive sewing yarn mainly composed of polyester filament yarn using a TFO yarn and a ring yarn, Winding each strand of the polyester multifilament main yarn 10 wound around each of the three first tufts 1 in the S direction through a high speed TFO twisting machine to wind the first bobbin 2; The thread of three strands of the twisted main yarn 10 is released from the first bobbin 2 so as to penetrate through the three outer holes 6-1 of the induction member 6, and is divided into one strand. Allowing the screening (20) of the low melting polyester filament wound on the tuft (5) to penetrate the inner hole (6-2) of the guide member (6); Three main yarns (10) loosened from the first bobbin (2) and the screening (20) of the low melting polyester filament unrolled from the second tuft (5) to pass through the coupler (7) step; The three main yarns 10 and one strand of the screen 20 penetrating the combiner 7 are plyed together with a low flue of less than 200 TPM in the Z direction to wind the second bobbin 4 of the aluminum bobbin 4. step; Winding the plywood (30) wound around the second bobbin (4) to a third tuft (11) by high-speed twisting again with a predetermined flue in the Z direction using a high-speed TFO twisting machine; Winding the plywood 30 wound around the third tuft 11 to a third bobbin 8 of a setting aluminum bobbin; And Heating the braided yarn 30 wound on the third bobbin 8 at a temperature of 150 to 180 ° C. for 20 to 50 minutes through a high temperature and high pressure heater 9; . The method of claim 1, characterized in that the twisted yarn 30 wound to 200TPM or less and wound on the second bobbin 4 is twisted to 200TPM or more using a high speed TFO twister and wound to the third bobbin 8. Method for producing a polyester filament inner adhesive sewing thread. According to claim 1, the thickness of the three main yarn 10 is twisted in the S direction is 30 to 2000 Dian each, and the yarn filament range of 100 to 1000 TPM during the twisting yarns, characterized in that the internal adhesive sewing thread of yarn Manufacturing method. The method of claim 1, wherein the screening (20) is made of 1 to 5 strands, the melting point of the polyester filament internal adhesive sewing thread, characterized in that more than 180 ℃.

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