KR100226194B1 - Spinneret device for spinning sea and 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 use of the distribution plate without deteriorating the cross-sectional stability and uniformity of the spun composite fiber, so that the assembly of the spinneret can be easily assembled, the cleaning cost and the device cost can be reduced, and various viscosity A polymer can be selected and used as an island-in-sea component, and the present invention seeks to provide an island-in-the-sea composite fiber spinning detaining device which can improve the yield by lowering the use rate of the sea component.

[Summary of the solution of the invention]

In the island-in-the-sea composite fiber spinning detention apparatus composed of at least one distribution plate and a detention plate, the inner pipe 14 installed in the distribution plate so that the lower end inner diameter 14 is gradually smaller than the upper end inner diameter 13. The island-in-the-sea composite fiber spinning detention apparatus is manufactured using the island component pipe 3 in which the inclined surface 12 was formed.

[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 an alternative material of natural leather because it can satisfy the appearance, feel and other physical properties of natural leather.

The detaining device for spinning the islands-in-the-sea composite fiber has a disadvantage that it is expensive compared to the detaining device for spinning a general yarn and requires 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 make up for this drawback, Japanese Patent 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 form of a step, the pipe of the third distribution plate is inserted, the narrow portion that does not touch the pipe and free flow of polymer at the inlet The detention apparatus which consists of a combination of the 4th distribution board which has the inflow hole which has a wide part which consists of these, and the detention plate with the discharge hole for discharging a composite flow by converging the confluence formed in the 4th distribution board is proposed.

However, such a device has the advantage of stable spinning, while high processing precision is required to bring it into close contact with the inlet hole into which the pipe is inserted, which increases the spacing of the device and makes it difficult to adjust 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.The joint part of the pipe is stepped, so that 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 ceramic component inlet hole (2) as shown in Fig. 4a, which is cheaper, easier to manufacture, and easier to disassemble and assemble than the pipe (3) of the second distribution plate. A first distribution plate A having a small diameter inlet hole, a second distribution plate B having a pipe 3 attached to an inner wall of the inlet hole, and an inclined surface 4 at an upper portion thereof and larger than the pipe 3 A third distribution plate (C) having an inflow hole of diameter, a pipe (3) having a length from the upper end of the second distribution plate (B) to the inlet hole surface of the third distribution plate (C), and a composite flow There is provided a island-in-the-sea composite fiber spinning detaining device in which a detaining plate D having a focusing part 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 in the eluent, 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. 4B; The induction groove 10 is installed in close contact with the bottom surface of the first distribution plate (A) and communicates with the induction hole (2) on the upper surface and the induction pipe (3) in communication with the dispersion induction groove (10). A second distribution plate (B) having a sea component introduction hole (4) connected to the sea component inlet hole (1); The third distribution plate (C) is in close contact with the bottom surface of the second distribution plate (B) and has a joining hole (6) and a simple wall (7) of a height that can be in close contact with the lower portion of the second distribution plate (B); ; Isotonic type microfiber spinning detaining device, characterized in that the combination of the holding plate (D) which is in close contact with the bottom surface of the third distribution plate (C) and has a composite flow converging portion (8) and a discharge hole (9), respectively However, there is a problem that the device is complex, the cleaning and manufacturing cost is expensive, the cross-section of the spun composite fiber is unstable, and the use rate of the sea component can not be lowered below a certain level.

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.

In addition, the production yield is lowered because the sea component must be used at least 25% by weight for cross-sectional stability and spinning operation of the composite fiber.

In addition, since the viscosity of the polymer used as the sea component must be equal to or higher than the viscosity of the polymer used as the island component, the cross-sectional stability of the composite fiber can be achieved. .

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, thereby facilitating the assembly of the detaining device and at the same time reducing the cleaning cost and the device cost, and having a polymer having various viscosities. The present invention is to provide a island-in-the-sea composite fiber spinning detaining device that can be selected and used as the island-in-law component and can improve the yield by lowering the use rate of the sea component.

1 is an enlarged cross-sectional view of the conductive pipe portion of the detention apparatus of the present invention.

2 is an enlarged cross-sectional view of the conductive pipe portion of the conventional detention apparatus.

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 inflow furnace

12: slope of the island pipe

13: inner diameter of upper end of island component pipe

14: inner diameter of the lower end of the island component pipe

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, in the island-in-the-sea composite fiber spinning detention apparatus composed of one or more distribution plates and the detention plate, the inclined surface 12 is formed so that the lower inner diameter 14 is gradually smaller than the upper inner diameter 13 The island-in-the-sea composite fiber spinning detaining device is characterized in that the island-like pipe 3 is provided in the distribution plate.

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

FIG. 1 is an enlarged cross-sectional view of the conductive component pipe portion of the prisoner of the present invention, and FIG. 3 is an exemplary view showing a cross section of the prisoner of the present invention.

First, the detention apparatus of the present invention is composed of one or more distribution plates and the detention plate (D) and one of the distribution plate is formed with the inclined surface 12 so that the lower inner diameter 14 is gradually smaller than the upper inner diameter 13 Branch pipes 3 are provided.

The upper end inner diameter 13 of the island component pipe 3 used in the present invention is preferably 0.3 to 07 mm, and the lower end inner diameter 14 is preferably about 0.15 to 0.5 mm, but it does not particularly limit these inner diameter ranges.

If the upper end diameter 13 and the lower end diameter 14 are out of the above range, the cross-sectional stability and uniformity of the fiber may be lowered.

Thus, the reason for making the lower end inner diameter 14 smaller than the upper end inner diameter 13 of the island component pipe 3 is to increase the earth output of the island component during the composite spinning. When the earth output of the island component is increased, when the sea component and the island component are joined at the island-in-the-sea component inflow surface 5, the disturbance phenomenon of the island component due to the inflow of the sea component is reduced, thereby improving the cross-sectional stability and uniformity of the fiber.

As a result, the number of uses of the distribution plate can be reduced, which simplifies the assembly and disassembly of the detention apparatus and can reduce the cleaning and device manufacturing costs.

In addition, when the earth output of the island component is increased, the use rate of the sea component can be lowered without deteriorating the cross-sectional stability, thereby increasing the production yield, and polymers having various viscosities can be selected and used as the island component.

A feature of the invention relates to the shape of the conductive pipe 3 installed in the distribution plate. Therefore, there is no particular limitation on the number of distribution plates and the shape of the holding plate in the island-in-the-sea composite fiber spinning holding device.

The number of use of the distribution plate may be a range in which the assembly and disassembly of the detention apparatus is not complicated and the cleaning and fabrication cost does not increase, and the detention plate is generally composed of the complex flow concentrator 8 and the discharge hole 9. Plates can be used.

The process of manufacturing the island-in-the-sea composite fiber will be described with the detaining device of FIG. 3b representing one of the island-in-the-sea composite fiber spinning detaining devices 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 alone or modified resin is used as the island component polymer, and alkali-soluble co-polyester resin or polyethylene 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 or added.

Conventionally, sea component polymers having a viscosity higher than or equal to that of the island component polymer have been used for cross-sectional stability and spinning operation of the fiber. However, in the present invention, an island component polymer having a higher viscosity than the sea component polymer may be used for high strength. .

The island component polymer having passed through the island component inlet hole 2 reaches the island component pipe 3 of the present invention through which the inside diameter of the upper end portion is larger than the inner diameter of the lower end portion through the island component distribution plate 10. The island component having increased earth output while passing through the island component pipe 3 reaches the island-in-the-sea component inflow surface 5 located at the top of the distribution plate C.

Meanwhile, the sea component polymer having passed through the sea component inlet hole 1 reaches the island-in-the-sea component inlet surface 5 positioned at the top of the distribution plate C via the sea component inlet hole 4.

As described above, 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 while passing through the island-in-the-sea component joining hole 6 of the distribution plate C, and then the composite flow converging portion of the detaining plate D. It is emitted through the 8 and the discharge hole 9 to form an island-in-the-sea composite fiber.

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. In addition, the amount of the sea component polymer can be lowered, and polymers having various viscosities can be selected and used as sea island components.

This result is because the inner diameter 14 of the lower end of the conductive pipe 3 installed in one of the distribution plates in the detention apparatus of the present invention is smaller than the upper end inner diameter 13, so that the earth output of the conductive component can be increased.

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 island component polymer was melted in an extruder at 250 ° C., and the sea component polymer, an alkali-soluble co-polyester resin of 4 mol% copolymerized with 5-sodium sulfoisophthalic acid, was melted in an extruder at 290 ° C. 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 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-sectional 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 a full drum can be obtained without cutting off uncoated yarns of 6 kg weight for 72 hours.

The island component pipe 3 installed in the distribution plate of the island-in-the-sea composite fiber spinning detaining device of the present invention is formed such that the lower end inner diameter 14 is smaller than the upper end inner diameter 13 to improve the earth output of the island component. As a result, it is possible to overcome the flow disturbance of the island component when the sea component is introduced, so that the cross-sectional stability and uniformity of the spun island-in-the-sea composite fiber are improved even if the number of distribution plates is reduced.

As the number of distribution plates is reduced in this way, the assembling device can be easily assembled, and the cleaning cost and the device price can be reduced.

In addition, since the use rate of the sea component can be lowered, the yield is improved, and there is an effect that a polymer having various viscosities can be selected and used as a sea island component.

Claims (3)

In the island-in-the-sea composite fiber spinning detaining device composed of one or more distribution plates and a detention plate, the conductive pipe (3) having an inclined surface (12) having a lower inner diameter (14) gradually smaller than the upper inner diameter (13) The islands-in-the-sea composite fiber spinning detention apparatus is installed in the said distribution board. The islands-in-the-sea composite fiber spinning detaining device according to claim 1, characterized in that the inner diameter (13) of the upper end of the island component pipe (3) is 0.3 to 0.7 mm. 2. The island-in-the-sea composite fiber spinning cap as claimed in claim 1, characterized in that the inner diameter (14) of the lower end of the island component pipe (3) is 0.15 to 0.5 mm.

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