KR100226195B1 - Spinneret device for spinning a sea island conjugated fiber - Google Patents

Abstract

[Technical field to which the invention described in the claims belongs]

The present invention relates to a sea island-type composite fiber spinning detention apparatus.

[Technical Challenges to Invent]

The present invention can reduce the number of uses of the distribution plate without deteriorating the cross-sectional stability and uniformity of the spun composite fiber, so that the assembling device for spinning spinning can be easily assembled, and the cleaning cost and device cost can be reduced. It is intended to provide a detention device for use.

[Summary of the solution of the invention]

In the island-in-the-sea composite fiber spinning detaining device composed of one or more distribution plates and a detaining plate, the detaining plate (D) includes a island-in-law component inflow surface (5), a island-in-law component confluence hole (6) and a discharge hole (9) It is configured, and the island-in-the-sea composite fiber spinning mold left to form the island-in-the-sea component inflow surface 5 is formed in the curved surface which has a constant curvature radius.

[Important Uses of the Invention]

The detention apparatus of the present invention is used for spinning of islands-in-sea composite fibers.

Description

Island-in-the-sea composite fiber spinning detention device

It relates to a detention apparatus for spinning the island-in-the-sea composite fiber of the present invention.

The island-in-the-sea composite fiber is a fiber formed from a polydisperse system, and its cross section is a fiber in which many island components are dispersed in sea components and are continuous in the fiber axis direction.

The island-in-the-sea composite fiber is mainly used as a basic material of artificial leather, which is being spotlighted as a substitute material of natural leather because it can satisfy the appearance, feel and other physical properties of natural leather.

The detention apparatus for spinning the islands-in-the-sea composite fiber has a disadvantage in that it is more expensive than the detention apparatus for spinning yarns and requires a high design and manufacturing technology.

Several kinds of detaining devices for spinning island-in-the-sea composite fibers are already known. Among them, highly practical detaining devices have distribution plates with pipes for introducing island components and inlets for introducing sea components. It is a combination of the distribution plate and the metal plate which has the discharge hole for discharging a composite flow by concentrating the formed composite flow.

The drawback of this device is that non-uniformity is likely to occur between each filament spun during or at the same time.

In order to compensate for this drawback, Japanese specialty office 62-25763 has an upper part of a pipe attached to the third distribution plate having an inlet corresponding to the inlet of the first distribution plate and the inlet of the first distribution plate. The second distribution plate to prevent the separation of the furnace, the third distribution plate attached to the pipe in the step shape, the pipe of the third distribution plate is inserted, the narrow portion that does not touch the pipe and free flow of the polymer at the inlet A detention apparatus consisting of a combination of a fourth distribution plate having an inlet hole having a wide portion and a confinement plate having a discharge hole for discharging a composite flow by converging the confluence formed in the fourth distribution plate is proposed.

However, such a device has the advantage of stable spinning, while high machining precision is required to closely contact the inlet hole into which the pipe is inserted, resulting in high spacing of the device and difficulty in adjusting uniform voids during assembly. It is difficult to assemble the inlet hole and the pipe of the second distribution plate installed to prevent the escape to the upper part precisely, and because the joint part of the pipe is a step shape, the escape of the lower part of the pipe is prevented, but it is difficult to prevent the escape to the upper part. There are disadvantages.

On the other hand, Korean Patent Publication No. 91-4693 has a conductive component inlet hole (2) as shown in FIG. 4 (a) and a pipe of a second distribution plate to be inexpensive, easy to manufacture, and easy to disassemble and assemble. (3) a first distribution plate A having a smaller diameter inlet hole, a second distribution plate B having a pipe 3 attached to the inner wall of the inlet hole, and an inclined surface 4 at the upper portion thereof. 3) a third distribution plate C having a larger diameter inlet hole, a pipe 3 having a length from the upper end of the second distribution plate B to the surface of the inlet hole of the third distribution plate C; Also, there is provided a island-in-the-sea composite fiber spinning detaining device in which a detaining plate D having a composite flow converging portion 8 and a discharge hole 9 is combined.

However, such detention apparatus still uses three distribution plates and one detention plate, which is complicated to disassemble, assemble and manufacture, and is expensive.

In addition, in the detention apparatus, the sea component inflow chamber is distributed throughout the day of detention, so that it is difficult to lower the ratio of sea components to 25% by weight or less.

Since the sea component is removed during elution, the lower the sea component ratio, the higher the product yield, the shorter the working time of the elution time, the longer the cleaning cycle, and the lower the wastewater treatment cost. However, when the sea component is less than 25% by weight during the spinning, there is a problem in that the inflow amount of the sea component is insufficient, so that there is a lot of abnormality in the cross-sectional formability, that is, the cross-sectional shape in which the island components are joined, and the operation of the spinning is also reduced.

Meanwhile, Korean Patent Application No. 95-25171 discloses a first distribution plate (A) having a sea component inlet hole (1) and a island component inlet hole (2) as shown in FIG. The induction groove 10 is installed in close contact with the bottom surface of A) and communicates with the induction component inlet hole 2 on the upper surface, and the induction component pipe 3 in communication with the dispersion induction groove 10, and the sea component inlet hole. A second distribution plate (B) having a sea component introduction hole (4) connected to (1): a joining hole (6) and a second distribution plate in close contact with a bottom surface of the second distribution plate (B); (B) Third distribution plate (C) having a simple wall (7) of height that can be in close contact with the lower portion: the composite flow converging portion (8) and the discharge hole in close contact with the bottom surface of the third distribution plate (C) The island-in-the-sea fine microfiber spinning detaining apparatus characterized by combining each of the detention plates D which has (9) is comprised.

The conventional islands-in-the-sea composite fiber spinning detaining devices described above are all detention devices combining three or more distribution plates and one detaining plate. There is a rising problem.

If the number of use of the distribution plate is reduced to solve these problems, there is a problem that the cross-sectional stability and uniformity of the spun composite fiber is lowered.

The present invention can reduce the number of use of the distribution plate without deteriorating the cross-sectional stability and uniformity of the spun composite fiber, easy to assemble the detention apparatus and at the same time can reduce the cleaning cost and device price of the island-like composite fiber spinning detention To provide a device.

1 is an enlarged cross-sectional view of a portion of the holding plate of the holding device of the present invention.

2 is an enlarged cross-sectional view of the holding plate portion of the conventional holding device.

3 is an exemplary view showing a cross section of the detention apparatus of the present invention.

4 is an exemplary view showing a cross section of a conventional detention apparatus.

* Explanation of symbols for main parts of the drawings

1: sea component inlet hole 2: island component inlet hole

3: island component pipe 4: sea component introduction hole

5: sea island component inflow surface 6: sea island component confluence

7: simple wall 8: composite flow converging part

9: discharge hole 10: island component distribution plate

11: sea component inlet A: first distribution plate

B: second distribution plate C: third distribution plate

D: detention plate

The present invention relates to a detention apparatus for spinning the island-in-the-sea composite fiber. More specifically, the present invention is an island-in-the-sea composite fiber spinning detaining device composed of at least one distribution plate and a detention plate, the detention plate (D) is the island-in-water component inlet surface (5), island-in-water component confluence hole (6) and And a discharge hole 9, wherein the island-in-water component inflow surface 5 is formed into a curved surface having a constant radius of curvature.

Hereinafter, the present invention will be described in more detail with reference to the drawings.

1 is an enlarged cross-sectional view of the holding plate portion of the holding device of the present invention;

3 is an exemplary view showing a cross section of the detention apparatus of the present invention.

First, the detention apparatus of the present invention is composed of at least one distribution plate and the detention plate (D).

The metal plate D of the present invention is composed of an island-in-sea component inflow surface 5, an island-in-sea component joining hole 6, and a discharge hole 9. At this time, the island-in-the-sea component inflow surface 5 located in the upper end of the holding plate D is formed as a curved surface having a constant radius of curvature (R).

The radius of curvature R of the island-in-sea component inflow surface 5 is 5 to 500 mm, more preferably 10 to 100 mm.

The reason for forming the island-in-the-sea component 5 as a curved surface having a constant radius of curvature R is as follows. It is to shorten.

As the distance between the island component pipe 3 and the island-in-sea component inflow surface 5 is shortened, the decomposing of the island-based polymer flowing into the cage plate D through the island component pipe 3 flows into the cage plate D. Not impeded by the powdered polymer, the polymer flow stability of the island component is improved. As a result, the cross-sectional stability and uniformity of the composite fiber is excellent.

The discharge hole located at the lower end of the metal plate has a length / diameter ratio (hereinafter referred to as L / D) of the island-in-sea component joining hole 6 (hereinafter referred to as L / D) located at the middle portion of the metal plate D of the present invention. The length / diameter ratio (hereinafter referred to as L / D) of 9) is 1-6.

The relatively high level of L / D is to give sufficient retention time so that the joined sea component polymer and island component polymer can secure a stable position on the cross section of the composite fiber.

When the L / D of the confluence hole 6 and the discharge hole 9 is lower than 1, the cross section of the composite fiber is disturbed, and the L / D of the confluence hole 6 is higher than 10 or the discharge hole ( If the L / D of 9) is higher than 6, the residence time of the polymer in the detention becomes too long, resulting in a problem of deterioration of the physical properties of the composite fiber.

In the detention apparatus of this invention, the number of uses of the distribution board assembled and installed on the detent board D is 1 or more, More preferably, they are 1-3.

In the distribution plate used in the detention apparatus of the present invention, generally, the island component inlet hole 2, the island component pipe 3, and / or the sea component inlet hole 4 are formed.

However, the detention apparatus of the present invention does not particularly limit the number of distribution plates used or the structure of the distribution plates. It is sufficient that the assembly and disassembly of the detention apparatus is not complicated and the cleaning and fabrication costs do not increase.

The process of manufacturing the island-in-the-sea composite fiber will be described with the detention apparatus of FIG. 3 (b) showing one of the island-in-the-sea composite fiber spinning detention apparatuses of the present invention.

The island component polymer is introduced into the detention apparatus through the island component inlet hole 2 and the sea component polymer is introduced into the detention apparatus through the sea component inlet hole 1.

At this time, polyamide 6, polyamide 66, or polyester resin is used as the island component polymer, and alkali-soluble copolyester resin is mainly used as the sea component polymer.

The alkali-soluble copolyester resin is more specifically selected from the group consisting of a bifunctional acid compound such as isophthalic acid, adipic acid, naphthalenedicarboxylic acid compound, dimethyl isophthalate, polyethylene glycol, etc. One or two or more compounds are copolymerized.

After passing through the island component distribution plate 10 and the island component pipe 3, the island component polymer that has passed through the island component inlet hole 2 reaches the island-in-the-sea component inflow surface 5 located at the top of the detention plate D. do.

On the other hand, the sea component polymer that has passed through the sea component inlet hole 1 reaches the island-in-the-sea component inlet surface 5 positioned at the upper end of the metal plate D through the sea component inlet hole 4.

In this way, the sea component polymer and the island component polymer that have reached the island-in-the-sea component inflow surface 5 are joined to each other through the island-in-sea component joining hole 6 and are then spun through the discharge hole 9 to form a island-in-the-sea composite fiber. do.

The detention apparatus of the present invention can produce an island-in-the-sea composite fiber having excellent cross-sectional stability and uniformity without using a large number of distribution plates.

This result indicates that the island-in-the-sea polymer and the sea-component polymer are joined because the island-in-the-sea component inflow surface 5 constituting the upper end of the cage D of the present invention is formed into a curved surface having a constant radius of curvature R. This is because the flow disturbance of the island component polymer due to the inflow of the sea component polymer can be minimized.

In addition, since the length / diameter ratio (L / D) of the island-in-sea component joining hole 6 and the discharge hole 9 is large, the sea component polymer and the island component polymer can secure each position stably on the cross section of the composite fiber. to be.

The detention apparatus of the present invention can minimize the number of uses of the distribution plate, so it is easy to disassemble and assemble and the cleaning and manufacturing costs are reduced.

Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples. However, the present invention is not limited only to the examples.

Example 1

The polyamide 6-component polymer was melted in an extruder at 250 ° C., and the sea-component polymer, an alkali-soluble co-polyester resin 5-sodium sulfoisophthalic acid copolymerized with 5 mol%, was melted in an extruder at 290 ° C., and then viewed. The island-in-the-sea composite fiber spinning detaining device (80 discharge holes, 36 island component pipes) is spun at a spinning temperature of 280 ° C. and a spinning speed of 1,300 m / min to produce a island-in-the-sea composite fiber.

At this time, the weight ratio of sea component to island component is set to 35:65.

The results of measuring the cross-sectional stability and spinning operation of the prepared island-in-the-sea composite fiber are shown in Table 2.

[Examples 2 to 6 and Comparative Examples 1 to 6]

The islands-in-the-sea composite fiber is manufactured under the same conditions and processes as in Example 1 except that the conditions for manufacturing the island-in-the-sea composite fiber are changed as shown in Table 1.

The results of measuring the cross-sectional stability and spinning operation of the prepared island-in-the-sea composite fiber are shown in Table 2.

TABLE 1

TABLE 2

* Cross-section stability is expressed as the average value of three measurements of the number of islands in which two or more islands are joined to each other on the cross section of the composite fiber. Thus, the larger the number joined, the worse the cross-sectional stability.

* Radiation operation means the rate at which 6 drums of unstretched yarn can be obtained without cutting when unwinding 72 hours continuously.

The island-in-the-sea composite fiber spinning detaining device of the present invention is an island-in-the-sea component inflowing sea component since the island-in-the-sea component inflow surface 5 constituting the upper end of the detention plate D is formed into a curved surface having a constant radius of curvature R. Can overcome the flow obstacles. As a result, the cross-sectional stability and uniformity of the spun island-in-the-sea composite fiber are improved.

In addition, since the length / diameter ratio (L / D) of the island-in-the-sea component merging hole 6 and the discharge hole 9 respectively positioned in the middle part and the lower part of the metal plate is large, the sea component and the island component are stably on the cross section of the composite fiber. Will take place. As a result, the number of distribution plates (A to C, etc.) used in the upper part of the holding plate D can be reduced in order to improve the cross-sectional stability of the composite fiber, so that the assembly of the holding device is easy and the cleaning cost and the cost of the device can be reduced. This effect also becomes inexpensive.

Claims (3)

In the island-in-the-sea composite fiber spinning detaining device composed of at least one distribution plate and a detaining plate, the detaining plate (D) includes a island-in-law component inflow surface (5), a island-in-law component confluence hole (6), and a discharge hole (9). It is configured, wherein the island-in-water component inlet surface 5 is formed in a curved surface having a radius of curvature of 5 to 500nm. The device for spinning island-in-the-sea composite fiber spinning according to claim 1, wherein the length / diameter (L / D) ratio of the discharge holes (9) is 1 to 6. The device for spinning an island-in-the-sea composite fiber spinning machine according to claim 1, wherein the length / diameter (L / D) ratio of the island-in-sea component joining hole (6) is 1 to 10.

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