KR20020013021A - Manufacturing method of monofilament - Google Patents

Abstract

PURPOSE: A process of preparing monofilaments by producing monofilaments without producing multifilaments such as 10 to 12 filaments in one-stage process from a spinneret to a take-up roller is provided, thereby producing monofilaments having excellent processability, soft texture, migration, high coloring properties, freshness and flexibility as well as reducing production of cost. CONSTITUTION: Resin comprising polytrimethylene terephthalate having an intrinsic viscosity of 0.9 to 0.95, polyethylene terephthalate having an intrinsic of 0,48 to 0.80 and polyamide having an intrinsic viscosity of 2.3 to 3.0 is subjected to spinning at a cooling apparatus(50), passing through a spinneret(60), winding on a guide(10), passing through a first godet roller(20) at room temperature to 70deg.C and a second godet roller(30) at 60 to 140deg.C and then winding up on a take-up roller(40) to produce undrawn monofilaments, partial undrawn monofilaments and drawn monofilaments with a fineness of 10 to 70 denier.

Description

Manufacturing method of monofilament {Manufacturing method of monofilament}

The present invention relates to a method for producing a monofilament (monofilament) excellent spinning work, and more particularly, in the spinning step of the fiber during the production of monofilament (monofilament), from a spinneret to a winder in one step The monofilament of the strands is designed to be produced, and if necessary, it is possible to ply them up to 2 to 8 strands, polytrimethyleneterephthalate having an intrinsic viscosity of 0.9 to 0.95, and has an intrinsic viscosity of 0.48 to 0.8. The present invention relates to a method for stably producing monofilaments that give a soft touch with polyethylene terephthalate and relative viscosities of 2.30 to 3.0 polyamide as the raw material resins with the most efficient conditions.

Conventional monofilament (monofilament) manufacturing method in the spinning process 100 to produce a number of strands of fiber 10 to 12, the splitting process 200 to separate each of the fibers consisting of 10 to 12 strands in use in each use 200 As a result, there was a problem that the excess of the energy cost and the fiber is carried on handling and handling. In addition, synthetic fibers have excellent physical and chemical durability compared to other natural fibers, while being widely used in various materials, there is a problem of their soft touch or monotonous limitations.

The present invention has been devised to solve the above problems, and aims at producing monofilaments having workability, soft touch and dyeability and high colorability, coolness, and elasticity, as well as efficient workability and cost reduction. do.

In order to achieve the above object, the present invention is designed to produce one strand of monofilament in a one-step process from spinneret of spinning step of fiber to odor odor when manufacturing monofilament. If necessary, it is possible to ply to 2 to 8 strands, polytrimethyleneterephthalate having an intrinsic viscosity of 0.9 to 0.95, polyethylene terephthalate having an intrinsic viscosity of 0.48 to 0.80, and a relative viscosity of 2.30 to 3.0. Provided is a method for producing undrawn monofilament, partially undrawn monofilament, and drawn monofilament using polyamide as a raw material resin.

1 is a schematic view of manufacturing a conventional multifilament.

Figure 2 is a production schematic of the present invention monofilament.

3 is a production schematic of the monofilament with the guide device removed.

<Brief description of symbols for the main parts of the drawings>

1,10: Guide 2,20: 1st gore roller

3,30: Secondary roller roller 4,40: Winding machine

50: cooling device 60: spinneret

100: spinning process 200: splitting process

300: yarn after splitting

The present invention is a method for producing a monofilament (monofilament), the fiber is spun in the cooling device 50 and passed through the spinneret 60 is taken in the guide 10 and the first gourd roller 20 and the second By maintaining the shape in the roller roller 30 and adjusting the speed of winding the fiber in the odor blowing machine 40 to produce undrawn, partially undrawn, drawn monofilament (monofilament), in the spinneret 60 of the spinning step To winder (40) in a one step process to produce a monofilament (monofilament) of one strand was designed to enable it to be possible to ply 2 to 8 strands, polytrimethyl terephthalate used in the manufacturing method polytrimethyleneterephthalate has an intrinsic viscosity of 0.9 to 0.95, polyethyleneterephthalate has an intrinsic viscosity of 0.48 to 0.80, and polyamide has a relative viscosity of 2.40 to 3.0. The raw material is used and the odor speed is 800 ~ 1500m / min for non-drawn yarn, and the spinning speed range for partially drawn or drawn yarn is more than 2g / d (gram / denier) of yarn strength for partially drawn or drawn yarn. It can be set as 3100-49 00m / min which is also excellent in dyeability, It is characterized by the above-mentioned.

Hereinafter, the detailed description of the most efficient working conditions of the manufacturing method of the monofilament (monofilament) of the present invention, the thickness of the yarn is basically 10 to 70 denier (De ') but more specifically 15 to 60 denier (De') The case is the most preferred range. If it is 70 denier (De ') or more, the radiation fineness is too large, insufficient cooling, poor spinning workability, poor adhesion of the spinning fluid is also bad shape of the odor cake (40).

If the spinning temperature is 290 ° C or higher, the raw material resin of the polymer is easily deteriorated, and the spinning workability is poor at the temperature of 250 ° C or lower, so 250 ° C to 285 ° C is suitable, and the temperature of the cooling air is 15 ° C to 18 ° C. When 60mmH20 or less, the yarn is hard to solidify sufficiently, and when 100mmH20 or more, the flow of filament is damaged in the yarn during spinning, which causes instant bonding between neighboring filaments or decreases the workability of the yarn. Uniformity is reduced, so 60 to 100mmH20 is less.

Since the yarn is not solidified directly under the cooling tube, the radioactive workability may be poor or the winding itself may be impossible. Therefore, in order to maximize the cooling effect, the guide 10 should be used or the natural cooling yarn should be increased to sufficiently solidify the cooling.

In the case of undrawn yarn, the monofilament produced at a spinning speed of 800 to 1500 m / min is drawn in the drawing machine at a draw ratio of 1.5 to 3.5, and in the case of partially drawn yarn, the first and second high-fibers in the spinning speed of 3100 to 4300 m / min are used. The temperature of the rollers (Godet roller) (20,30) is produced at room temperature, and in the case of stretched yarns, the temperature of the first gourd roller 20 is from room temperature to 70 ° C., and the temperature of the second gourd roller 30 is from 60 ° C. to 140 °. The spinning speed is prepared at 3800 to 4700 m / min.

In addition, the fiber cross-sectional shape is the shape of the spinneret is circular, the shape of the cross section (△ type, □ type, Y type, + type) so that the fiber passed through the spinneret has the above-described shape.

Hereinafter, the present invention will be described in detail by way of examples and comparative examples according to the manufacturing method of the monofilament (monofilament).

Example 1

Monofilament was prepared using a conventional spinner after drying at 140 ° C. for 5 hours or more in a hot air dryer using a polytrimethylene terephthalate resin having an intrinsic viscosity of 0.92, wherein the spinning temperature was 255 ° C. , Spinning speed was 3800m / min, cooling wind temperature was 17 ℃ and air flow was 90mmH20. And the physical properties and process parameters of this embodiment using the guide 10 directly under the cooling device are shown in Table 1.

Example 2

The same procedure as in Example 1 was repeated except that a polyethyleneterephthalate resin having an intrinsic viscosity of 0.6 was used instead of the polytrimethyleneterephthalate resin to a spinning temperature of 285 ° C.

Example 3

In Example 1, the polyamide resin having a relative viscosity of 2.40-3.0 and a drying temperature were dried at 100 ° C. for 4 hours instead of polytrimethyleneterephthalate in the raw material resin, so that the spinning speed was 110-1250 m / After production in min was treated in the draw ratio 1.5 to 3.5 range. In the case of the partially drawn yarn, the first and second Goodet rollers (20, 30) were treated at room temperature at a spinning speed of 4100 m / min. In the case of the stretched yarn, monofilament is produced by using the temperature of the first goth roller 20 at room temperature to 60 ° C. and the temperature range of the second goth roller 20 at 80-160 ° C. It was.

Comparative Example 1

The same procedure as in Example 1 was repeated except that the air volume of the cooling wind was changed to 60 mmH20.

Comparative Example 2

The same procedure as in Example 1 was repeated except that spinning without a guide 10 underneath the chiller.

(Circle): Excellent. (Triangle | delta): Normal.

X: Possibility of bad or plunging and bee

division Suzy Cooling air volume (mmH20) Radiation workability touch Pleasure Bulge Dyeability Example 1 PTT 90 Good 0 0 0 0 Example 2 PET 90 Good △ 0 △ △ Example 3 NYLON 90 Good 0 0 0 0 Comparative Example 1 PTT 60 Bad 0 X X 0 Remarks 2 PTT 90 Bad 0 X X 0

As described above, the present invention has the effect of producing a monofilament (monofilament) yarn having workability, processability, soft touch and dyeability and high colorability, coolness, and elasticity.

Claims (6)

In the manufacturing method of the monofilament (monofilament), the fiber is spun in the cooling device 50, passed through the spinneret 60, taken over the guide 10, the first gourd roller 20 and the second gourd roller ( 30) to maintain the form and to control the speed of winding the fiber in the winder (40) to manufacture the unstretched, partially unstretched, stretched monofilament (monofilament), from the spinneret 60 of the spinning step Method for producing a monofilament, characterized in that to produce one strand of monofilament (monofilament) in a one-step process up to (40). According to claim 1, Polytrimethyleneterephthalate (polytrimethyleneterephthalate) having an intrinsic viscosity of 0.9 to 0.95, polyethyleneterephthalate having an intrinsic viscosity of 0.48 to 0.80, polyamide having a relative viscosity of 2.3 to 3.0 The monofilament manufacturing method characterized in that to produce a monofilament (monofilament). According to claim 1, In the case of polyamide (polyamide) to produce a non-drawn yarn by drawing a monofilament (monofilament) produced in the spinning speed of 800 to 1500m / min in the stretching ratio in the range of 1.5 to 3.5, and spinning speed 3100 Partially stretched yarn is manufactured by using the temperature of the Goet rollers 20 and 30 at room temperature in the range of 4300 m / min to room temperature, and the temperature of the first gourd roller 20 in the spinning speed of 3800 to 4700 m / min. Method for producing a monofilament, characterized in that the drawn yarn is produced at room temperature to 70 ℃, the temperature of the secondary gourd roller 30 to 60 ℃ to l40 ℃. According to claim 1, wherein the monofilament production method characterized in that the monofilament (monofilament) characterized in that the strength for the fiber is in the range of 2 to 4g / d, elongation is within 35 to 80%. . The monofilament according to claim 1, wherein the final fineness of the fiber is 10 to 70 deniers (De '), and the monofilament is produced by producing the monofilament having 1 to 8 filaments. Manufacturing method. The monofilament according to claim 1, wherein the cross section of the fiber passing through the spinneret has a shape as described above, wherein the spinneret has a circular shape and a cross section (△ type, □ type, Y type, + type). Method for producing a monofilament, characterized in that.