KR0137047B1 - Spinning pack for manufacture of shaped ultrafine mixed fiber - Google Patents

Abstract

According to the present invention, at least three concentric circles are arranged in the spinneret, and the outermost and innermost discharge holes are arranged in the outermost part and the innermost part of the concentric circle, and the outermost part discharge hole and the innermost part discharge hole are capable of making microfibers having a fineness of 0.3 denier or less, and between the outermost part and the innermost part. The present invention relates to a spinning pack device for manufacturing a cross-section micro-fine-fiber yarn having a triangular or asymmetric triangular cross section and having a middle discharge hole capable of manufacturing a high shrinkage yarn having a fineness of 1 denier or more.

Description

Spinning pack device for manufacturing cross-section microfiber

1 is a schematic schematic cross-sectional view of a spinning pack device for producing a cross-section microfiber composite yarn of the present invention,

2 is a schematic plan view of the spinneret showing the arrangement of discharge holes in the spinnerette of FIG.

3 is a cross-sectional view of the present invention hetero-cross section ultra fine mixed yarn,

4 is a plan view of a spinneret used in Examples and Comparative Examples and a cross-sectional view of the manufactured ultra fine mixed yarn.

* Description of the symbols for the main parts of the drawings *

1: ultra fine yarn 2: high water livestock

3,3 ': Ultra-fine fiber component Euro 4: High-yield fiber component Euro

5: spinneret 6: outermost peripheral discharge hole

7: middle part discharge hole 8: innermost part discharge hole

9,9 ': Microfiber component reservoir 10: High shrinkage component reservoir

The present invention relates to a spinning pack apparatus for producing a microfiber yarn having a heteromorphic cross section by spinning a conventional polyethylene terephthalate and a highly shrinkable polyethylene terephthalate in the same spinneret, and more specifically, at least three concentric circles in the spinneret. Arrange the outermost discharging hole and the innermost discharging hole for superfine yarn with single yarn fineness of 0.3 denier or less at the innermost part of the outermost part of the concentric circles, and make a triangular or asymmetric triangular cross section on the intermediate concentric circle between the outermost part and the innermost part. The present invention relates to a spin pack apparatus for manufacturing a cross-section micro-fine-fiber yarn having a cross section having an intermediate part discharge hole capable of manufacturing high shrinkage yarn having a fineness of 1 denier or more.

JP-63-256735 manufactures polyethylene terephthalate tax blended yarn by simultaneously spinning different types of components through the same spinneret and winding different types of filaments of different single yarns at different focal points. Although the method is described, the method has a circular cross-section of different types of yarns, so that even after stretching and post-processing, the different types of fibers are not evenly dispersed, and each fiber is agglomerated with each other. This part has a problem that the mixing performance of the fabric is not satisfactory.

Accordingly, it is an object of the present invention to provide a spinning pack device for producing a cross-section microfiber yarn, which can be distributed evenly until the final processing, while spinning in the same mold.

In order to achieve the above object as well as another object that can be easily expressed in the present invention, at least three concentric circles may be disposed in the spinneret, and the ultrafine yarn having a single fineness of 0.3 denier or less may be sacrificed at the outermost and innermost periphery of the concentric circles. Arrange the outermost discharge hole and the innermost discharge hole, and arrange the middle discharge hole to have a triangular or asymmetric triangular cross section on the middle concentric circle between the outermost and innermost parts and to manufacture a high shrinkage yarn having a single yarn fineness of 1 denier or more. The discharge hole capable of manufacturing the discharge hole is an area of 3.2 × 10 ^-4 Cm ² or less and the discharge hole capable of manufacturing the high shrinkage yarn is discharged in the form of a throat having an opening so that the manufactured high shrink yarn has a triangular or asymmetric triangular cross section. Single yarn fineness with triangular or asymmetrical triangular cross sections with a width of 0.05-0.15 mm Written because evenly distributed and more than 1.0 denier was able to be improved the shrinkage stress by the heat history during the processing expressed by the improved punghap fineness of 0.3 denier or less added entry lot of microfiber to the surface of the fabric.

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

FIG. 1 is a schematic schematic cross-sectional view of a spinning pack device for manufacturing a cross-section microfiber composite yarn of the present invention, and FIG. 2 is a schematic plan view of a spinneret showing the arrangement of discharge holes in the spinning pack of FIG. 1, and FIG. This is a cross-sectional view of the microfiber yarn of heteromorphic section.

2 is a plan view of the spinneret in the spinneret of the present invention capable of simultaneously spinning a polymer melt of two components in the same spinneret, wherein three concentric circles are arranged in the spinneret 5 to have a high shrinkage in the middle of the outermost part and the innermost part. Arrange the middle part discharge hole (7) which can sacrifice the outermost part and the innermost part, and arrange the outermost part discharge hole (6) and the innermost part discharge hole (8) that can make the microfiber, but the outermost part discharge hole ( 6) and the innermost discharge hole 8 has an area of 3.2 × 10 ⁻⁴ Cm ² or less and the middle discharge hole 7 has a slit type having an opening so as to have a triangular or asymmetric triangular cross section, that is, or As the shape, the discharge hole 7 has a width of 0.05 to 0.15 mm, so that the ultra fine yarn having a single yarn fineness of 0.3 denier or less and the single yarn fineness having a triangular or asymmetric triangular cross section can be radiated simultaneously.

If the cross section of the high shrink yarn with single yarn fineness of 1 denier or more is not a triangular or asymmetric triangle but a circular cross section, when interlaced or post-processed, slip occurs with ultra-fine yarns of 0.3 denier or less. There was a problem in that the microfibers below denier are not sufficiently expressed in the target loop and loops are generated similarly to the occurrence of salting.

Therefore, in the present invention, the middle discharge hole 7 should be designed so that the high shrinkage yarn has a triangular or asymmetrical triangular cross section, and when the high shrinkage yarn is a high shrinking yarn having a triangular or asymmetrical triangular cross section, the angle of the triangular or asymmetrical triangle as shown in FIG. Since the ultrafine fibers of 0.3 denier or less were collected between the sides, the effect was excellent.

In order for ultrafine yarn having single yarn fineness of 0.3 denier or less to be collected on each side of a high shrinkage yarn having a triangular or asymmetrical triangular cross section, each side of a high shrinkage yarn having a triangular or asymmetric triangular cross section must be at least 7 micrometers in length. If the sides are less than 7 micrometers long, then the high shrinkage will stick together.

In addition, in order to manufacture a high shrinkage yarn having a triangular or asymmetrical triangular cross section, the middle discharge hole 7 should have a slit shape having an opening and a width smaller than that of a large one. It is effective to be 0.05 to 0.15 mm due to the problem of stability during spinning.

On the other hand, it is effective that the area of the outermost peripheral discharge hole 6 and the innermost peripheral discharge hole 8 for producing an ultrafine yarn having a single yarn fineness of 0.3 denier or less is 3.2 × 10 ^-4 Cm ² or less.

In the same way, the single yarn fineness having a triangular or asymmetrical triangular cross section should be evenly distributed with 1.0 denier or more. Since it is abundant, it could express more improved abundance.

In addition, the flow path until the molten polymer reaches the spinneret 5, as shown in FIG. 1, the high shrinkage component passes through a filter (not shown) to remove foreign substances in the melted polymer and the high shrinkage component flow path 4 ) To the high shrinkage component reservoir (10) to sufficiently relieve the pressure loss and to be discharged through the middle discharge hole (7), the ultra-fine component is passed through a filter (not shown) foreign matter in the molten polymer The pressure loss is sufficiently alleviated by transferring the microfiber component reservoirs (9,9 ') through the microfiber component flow paths (3,3') and then through the outermost peripheral discharge hole (6) and the innermost peripheral discharge hole (8). Allow to be radiated. In this case, in order for the microfiber component to be led to the outermost peripheral discharge hole 6 and the innermost peripheral discharge hole 8 in the same amount, the pressure loss of the polymer passing through the microfiber component flow paths 3 and 3 'must be the same.

In the production of the release cross-section ultra fine mixed yarn of the present invention, the spinning temperature is the same as that of the ordinary polyester yarn, and the other conditions can be produced by the same as the spinning conditions of the conventional polyester yarn.

The following examples and comparative examples illustrate the present invention more specifically, but do not limit the scope of the present invention.

Example 1

A spinneret (high shrinkage component discharge hole: triangular cross section) having the same plane as in FIG. 4 (A) is used, and an ultrafine fiber component is polyester having an intrinsic viscosity of 0.64, and isoflavone as a dicarboxylic acid component as a high shrinkage component. It was prepared by containing 8 mol% of phthalic acid, and a polyester having an intrinsic viscosity of 0.62 was used. The microfiber yarn was made with 0.3 denier of single yarn fineness and 50d / 144f total, and the high fiber yarn was made with 3 denier of single yarn fineness and 50d / 12f total, and the spinning temperature was 285 ℃ and the winding speed was 1300m / min.

The undrawn yarn prepared by the above-described method was stretched using a hot rolling period at a drawing ratio of 3.254 and a first drawing roller temperature of 85 ° C., and drawn at an interlacing number of 40 / m and a heat setting plate temperature of 115 ° C., and then used as a gradient. After weaving and dyeing, the cross section of the yarn was observed under a microscope and shown in FIG. 4, and various characteristics such as radioactivity and the like were measured and evaluated.

Example 2 and Comparative Examples 1-2

The fabric was fabricated in the same manner as in Example 1 except that the planar shape of the spinneret was changed to (B), (C), and (D) in FIG. 4 and the shape and specification of the discharge hole were changed as described in Table 1. The cross sections of the yarns were observed, and the characteristics of the yarns were measured and evaluated in FIG. 4 (b), (c), and (d).

●: Excellent ▲: Normal ×: Poor

※ Evaluation method of various characteristics

Radioactivity: Yield when spun for 30 days

Excellent when over 90%. Usually over 80%. Bad when

2. Loopability: When the side of the processed paper is observed by using an electron microscope, the degree of 0.3d microfiber, a low shrinkage yarn, is ejected to the surface of the fabric.

3. Dyeing,: After dyeing, check the processed paper to see if spots or streaks appear on the yarn.

4. Tactile touch: Based on the method of quantifying using the KES System and judging the touch by the expert directly touching with money.

Claims (3)

Arrange at least three concentric circles in the same spinneret and arrange the outermost and the innermost discharge holes for superfine yarns with a single fineness of 0.3 denier or less in the outermost and innermost of the concentric circles, and between the outermost and innermost parts. Spinning pack device for manufacturing a cross-section micro-fine-fiber yarn having a triangular or asymmetrical triangular cross-section on the concentric circle and arranged in the middle discharge hole capable of producing a high shrinkage yarn having a single yarn fineness of 1 denier or more. The spinning pack device according to claim 1, wherein the outermost circumferential discharge hole and the innermost circumferential discharge hole have an area of 3.2 × 10 ⁻⁴ Cm ² or less. The spin pack of claim 1, wherein the intermediate discharge hole has a slit width of 0.05 to 0.15 mm.