KR20000025004A - Method for producing complex processed yarn of polyester - Google Patents

Abstract

PURPOSE: A method for producing a complex processed yarn of polyester is provided to show the shade effect in the direction of fibrous shaft and the different color effect in a sectional direction, and to have the excellent after-processing property. CONSTITUTION: Undrawn yarn of cation basic polyester multi filament forms a thick and thin unit ununiformly lengthwise a fiber by drawing during contacting in a hot pin(1) before intersecting with a polyester multi filament undrawn yarn(B) in a nozzle for spinning a fluid(4). A used fibrous fibril(B) is the undrawn yarn of high orientation having the 80-200% rupture fineness, and is cool-drawn at a room temperature under the 20% rupture fineness before intersecting in the jetting nozzle of fluid(4). And the cation dyeing basic fibrous fibril(A) is the rupture fineness of 80-160%. The drawn yarn is intersected in the jetting nozzle of fluid(4) to be the orientating number of 20-200piece/m.

Description

Manufacturing method of polyester composite yarn

The present invention relates to a method for producing a polyester composite workpiece having a soft, bulky and dry.

In order to give a natural placenta and bulkiness to polyester yarns, a method of manufacturing the fabric with a twisted yarn having stretched and undrawn portions in the fiber axis direction is described in Japanese Patent Application No. 62-31094. However, this method can produce a fabric having a natural color tone and thermal and mechanical stability, but the other color is impossible to express and has a disadvantage that the color is limited, there is a problem in poor post-processing.

SUMMARY OF THE INVENTION An object of the present invention is to provide a method for producing a polyester composite processed yarn which can exhibit a dichroic effect in the cross-sectional direction along with a light effect in the fiber axis direction and is excellent in post processing.

1 is a manufacturing process schematic diagram of the present invention

<Explanation of Signs of Major Parts of Drawings>

A; Cationic Dye Salted Polyester Multifilament Unstretched Yarn,

B; Ordinary polyester multifilament unstretched yarn,

One ; Hot fin, 2; First heater, third second heater, four; Fluid spray nozzle,

5; Flammable device.

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

1 is a manufacturing process schematic diagram of the present invention, A is a cation dye salted polyester multifilament unstretched yarn.

The cation dye chlorinated polyester multifilament unstretched yarn (hereinafter referred to as cation dye chlorinated yarn) (A) is a conventional polyester multifilament unstretched yarn (hereinafter referred to as a conventional yarn) in the fluid spray nozzle (4). Before the air entanglement treatment with (B) is drawn while contacting the hot pin (1) to form a non-uniform thik and thin in the longitudinal direction of the fiber.

In the present invention, the hot fin 1 has a circular cross section and several slits are formed on the surface thereof.

The conventional thread B used in the present invention is a highly oriented untwisted yarn having an elongation at break of 80 to 200%, and cold drawn to room temperature at 20% or less of the elongation at break before the air agitation treatment in the fluid spray nozzle 4.

In the present invention, the cation dye chlorinated yarn (A) has an elongation at break of 80 to 160%, most preferably 120 to 140%, a single yarn fineness of 1.0 to 8.0 denier, and a total fineness of 50 to 100 denier. Will.

The two drawn yarns treated as described above are air entangled in the fluid spray nozzle 4 so that the number of entanglements is 20 to 200 / m.

The air entangled yarn is passed through a first heater 2 having a temperature above room temperature and below a glass transition temperature, followed by false twisting, followed by a second heater 3 having a temperature of 180 to 220 ° C. After heat-treating with 5 to 50% over feed, it is wound up.

According to the present invention, a cationic dye salt thread (A) is passed through a hot fin (1) having a slit formed on its surface to form a non-uniform posture in the longitudinal direction of the thread, and a conventional thread (B) is a hot stretching method. Instead, cold drawing is carried out to room temperature, and the two yarns are air-interlocked, so that the first heater 2 having a temperature of room temperature is processed without processing at high temperature before combusting, so that no pin yarn and loops are generated. Polyester composite processing excellent in post-processing property can be manufactured.

Example 1

Ordinary cationic dye chlorinated polyester copolymer is melted at a rate of 3,000 m / min after melt ejection and cooling to obtain polyester multifilament undrawn yarn. The undrawn yarn is drawn at a draw ratio of 1.5 times on a hot pin having three slits on its surface to prepare a multifilament having a placenta of 75 denier 36 filaments. The other yarn obtains a conventional polyester multifilament undrawn yarn by melting the polyester semi-dull polymer at a speed of 2,600 m / min after melt discharge and cooling. The yarn thus obtained is cold drawn at a draw ratio of 1.3 times at room temperature to produce 75 denier 36 filament yarns. The two yarns are passed through an air spray nozzle to perform air entanglement so that the number of entanglements is 90 / m. Thus, the air entangled yarn is combusted at a rate of 2,400 pieces of combustible water at room temperature and 600 m / min in the Z direction in the burning direction. The yarns thus obtained are passed through a second heater having a temperature of 210 ° C. so as to have an overfeed rate of 30%, and then wound to produce a processed yarn.

The obtained composite yarn has a structure of a composite processing machine having postures in the longitudinal direction and showing multicolor dyeing properties.

Example 2

Prepared as in Example 1, but the other manufacturing conditions were as shown in Table 1.

Comparative Examples 1-2

Prepared as in Example 1, but the other manufacturing conditions were as shown in Table 1.

Example 1 Example 2 Comparative Example 1 Comparative Example 2 First feed roller speed (m / min) 468 308 308 308 Second supply roller speed (m / min) 540 355 355 355 Third feed roller speed (m / min) 702 462 462 462 4th feed roller speed (m / min) 702 462 462 462 Thermal stretching temperature (℃) of thread (B) - - 100 120 Air pressure (kg / cm ² ) 3.0 3.0 3.0 3.0 5th feed roller speed (m / min) 727 476 727 476 6th feed roller speed (m / min) 559 357 559 559 Drawing Roller Speed (m / min) 800 500 800 800 Heat fin temperature (℃) 80 80 80 120 Number of stations (pcs / m) 2400 2400 2400 2400 First heater temperature (℃) 25 25 180 180 Second heater temperature (℃) 210 210 210 210 Quality Good Good Good Pin yarn and loop occurrence Three and a half U U U radish Product Great Good Inadequate Bad

The polyester composite fabricated according to the present invention has a placenta in the longitudinal direction, expresses both light and gray effect at the same time, and has a flat surface, so it has excellent post-process passability and excellent bulkiness. Is suitable as. Polyester composite processing of the present invention can be utilized for the manufacture of men's, women's suits or out-wear (Out-wear) fabrics.

Claims (2)

The cationic dye non-drawn polyester multifilament non-drawn yarn is drawn through a hot pin with a slit formed on its surface to form a posture portion, and the ordinary polyester multifilament non-drawn yarn is cold drawn at room temperature. The polyester composite fabrication process is characterized in that the two yarns are air twisted and then twisted while passing through the first heater at room temperature, followed by winding with passing through the heated second heater with overfeed. Manufacturing method. The method of claim 1, wherein the temperature of the first heater is 25 ℃ and the temperature of the second heater is 210 ℃.