KR101054796B1 - Manufacturing method of hollow polyester posture yarn with excellent elasticity - Google Patents

Abstract

The present invention is to stretch the part of the filament strand by partial stretching and heat treatment using polyester hollow filaments prepared by complex spinning two different types of polyester polymers to provide a poise yarn as a natural stretch and poise yarn (Thick & Thin yarn) relates to a processed yarn capable of simultaneously expressing the melange effect by the effect.

Polyester hollow filament, partial heat treatment device, poise

Description

Process of Producing Hollow Type Polyester Thick and Thin Yarn Having Excellent Elasticity

The present invention relates to a method of manufacturing a hollow polyester posture yarn having excellent elasticity, by drawing a polyester hollow filament conjugated with polyester polymers having different viscosities to give fineness and at the same time obtain a dichroic appearance. To provide a polyester posture yarn.

Polyester yarns to which the present invention belongs are processed yarns having a dichroic color due to color difference due to non-uniformity of fiber fineness as the stretched portion and the undrawn portion are distributed in the fiber axial direction.

 These polyester postures have been introduced in various domestic patents, and among them, Korean Patent Publication No. 1988-0001701 discloses two types of polyester resins having different thermal shrinkages in the manufacturing method of the crimping isomdo polyester yarn. The unstretched composite yarn produced by the composite spinning is drawn at a specific temperature below the secondary transition temperature of the unstretched yarn and a predetermined draw ratio, and the relaxation heat treatment is performed at a temperature of 100 to 110 ° C. so that the relaxation rate is 2 to 15%. Thus, the crimp islet also provides polyester yarn. This patent is similar to the method to be developed this time, but looking at the contents of this patent, it is possible to supply two or more kinds of yarns in a combination machine and a combustor, and to set the supply rate difference between yarns, thereby partially giving a difference in fineness. Hollow stretch polyester posture to be invented by the method of supplying two or more kinds of yarns dyed in different colors and different colors to give fineness difference using the same method as described above and at the same time to obtain a Dyefleck-like appearance There is a difference between Sawa.

In addition, Korean Patent Publication No. 1988-0476 provides a polyester posture yarn by attaching a first heating rod and a movable guide between a first drawn roller and a second drawn roller of a triangular cross section of a conventional high speed drawing device. However, it was difficult to control the spacing of the posture and difficult to express the natural stretch.

Therefore, the present invention not only maintains lightness by using hollow filaments manufactured by complex spinning two kinds of polymers having different viscosities, but also has excellent natural stretch, repulsive feeling and elasticity, as well as poise (Thick & Thin yarn). It is a technical task to develop a differentiation material expressing the melange effect by the effect at the same time.

Therefore, according to the present invention, after passing a bundle of polyester hollow filament of circular cross-section spun into a composite yarn with two types of polyester polymers having different viscosities three to six times while winding the first gourd roller at 60 ~ 75 ℃ After passing through a partial heat treatment apparatus having a surface temperature of 110 to 150 ° C. and winding it through a second gourd roller at 30 to 40 ° C. three to six times, drawing and winding at a draw ratio of 1.3 to 1.6 and winding the polyester hollow type of the circular cross section. Provided is a method for producing a hollow polyester posture yarn having excellent elasticity, characterized by providing fineness difference between filaments.

Hereinafter, the present invention will be described in more detail.

The polyester placer of the present invention by stretching a portion of the filament strand by partial stretching and heat treatment using polyester hollow filaments prepared by complex spinning two different kinds of polyester polymers different from each other as natural The present invention relates to a processed yarn capable of simultaneously expressing the melange effect due to stretch and thick yarn (Thick & Thin yarn) effects.

First, the polyester filament supplied as the material of the polyester posture yarn of this invention uses what was manufactured by complex spinning two types of polyester polymers from which a viscosity characteristic differs from each other.

The polyester hollow filament uses a hollow filament as shown in FIGS. 3 and 4 as a circular cross section hollow filament obtained by complex spinning a high viscosity polyester polymer and a low viscosity polyester polymer in a side by side form. . Preferably, the high viscosity polyester polymer and the low viscosity polyester polymer have affinity for each other, and the shrinkage property of one component is greater than the other component by using polymers having a large intrinsic viscosity difference. Crimping characteristic can be provided.

The low viscosity polyester polymer has an intrinsic viscosity of 0.40 to 0.60 dl / g, and the high viscosity polyester polymer has an intrinsic viscosity of 0.60 to 0.80 dl / g. desirable. In addition, the viscosity difference between the high viscosity polyester polymer and the low viscosity polyester polymer is preferably 0.10 to 0.20. If the viscosity difference between the two components is less than 0.10, the hollowness of the cross section does not have much effect, but the crimping property by self crimp is not well expressed, and thus, the final stretching property is inferior. In addition, when the viscosity difference between the two components is greater than 0.20, radiation stability may be lowered, such as trimming, and the efficiency may be reduced in terms of product manufacturing, and the touch may be inhibited.

The hollow filament of the present invention is a composite spun by using a two-slit spinneret consisting of a semi-moon-type high viscosity polymer slit and a low viscosity polymer slit having a larger area than the high viscosity polymer slit facing each other in pairs. use. The hollow filament is basic to maintain light weight compared to the general hollow fiber and can give a natural stretch and excellent resilience and elasticity.

In the present invention, after passing the polyester hollow filament bundle (1) of the composite spun circular cross section 1 to 3 to 6 times while winding the first gourd roller (2) of 60 ~ 75 ℃ as shown in Figure 1, After passing through the partial heat treatment apparatus 3 having a surface temperature of 110 to 150 ° C., the film is passed through the second gourd roller 4 at 30 to 40 ° C. three to six times to draw at a draw ratio of 1.3 to 1.6 and a winding device 5. It is wound up to produce a polyester posture yarn. The first gourd roller (2) is a process necessary for preheating the filament below the glass transition point of the filament in order to uniformly stretch the filament in the 60 ~ 75 ℃ state.

The hollow filament bundle released after being wound on the first roller may be stretched by passing the second roller roller 4 at a draw ratio of 1.3 to 1.6 after passing through the partial heat treatment apparatus 3 at 110 to 150 ° C.

In general, when the unstretched polyester fiber (POY) is stretched to about 70 to 80% of the maximum elongation without completely stretching, the necking phenomenon, which is one of the characteristics of the polyester fiber, occurs, thereby partially stretching. . At this time, the polyester fiber is stretched at the necking area, and the necking area and the non-necking area are alternately generated on the fiber surface, so the fineness of each fiber part is different (thick & thin denier). ) Fibers can be produced.

In the case of the posture of the present invention, it is manufactured to express the natural stretch and repulsive feeling and elasticity well, so it is necessary to stabilize the physical properties by setting an appropriate draw ratio. The polyester hollow filament bundle of the circular section is drawn between the first goug roller and the second goug roller, wherein the filament bundle is a circular disk 30 of the partial drawing device (3) located between the two goug rollers 40) It passes through the outer circumferential surface. A constant temperature is applied to the partial drawing apparatus and heat is transferred to the filament by the filament bundle contacting the outer peripheral surfaces of the circular disks 30 and 40 of the partial drawing apparatus.

The partial heat treatment apparatus 3 includes two upper and lower circular disks which rotate in a clockwise direction and correspond to a coaxial line as shown in FIG. 2, and the upper and lower circular disks each have 1 to 10 circular outer surfaces. The hollow polyester filament passing through the groove 50 is formed to repeat contact and non-contact with the outer circumferential surface of the circular disk, it is possible to adjust the contact area according to the type of filament. The partial heat treatment apparatus is formed such that the upper circular disk 30 and the lower circular disk 40 correspond to the coaxial line, and the upper circular disk 30 and the lower circular disk 40 are integrally combined to rotate clockwise. Controlled to. Both ends of the circular disks are configured to be firmly fixed by the upper fixing piece 10 and the lower fixing piece 20.

In the present invention, the hollow filament bundle repeats contact and non-contact under the same rotational conditions as the outer circumferential surface of the circular disk as the upper and lower circular disks are constantly heated and rotated. Heat is transmitted while being in contact with the outer circumferential surface of the hollow filament bundle when the hollow filament bundle passes through the groove 50 formed on the outer circumferential surface of the circular disk so that the heat-dissipated hollow filament bundle is not in contact with the circular disk. In addition, while the hollow filament bundle is in contact with the outer circumferential surface of the circular disk, the filament bundle rotates together with the outer circumferential surface of the circular disk in the direction in which the filament bundle proceeds, so that heat can be evenly transmitted to the filament bundle.

That is, the portion of the hollow filament bundle in contact with the outer circumferential surface of the circular disk of the partial drawing apparatus is heated to be stretched between the first high roller and the second high roller, and the groove 50 formed on the outer circumferential surface of the circular disk is formed. The passing hollow filament bundle portion is not heated so that it is not affected by the stretching action between the two rollers. Based on this principle, a thick portion is formed in the portion of the hollow filament bundle that passes without contacting the circular disk of the partial drawing device, and the hollow filament bundle that is in contact with the partial drawing device passes and is thinned. The part will be made.

Thus, in the present invention, the stretching occurs at the speed difference between the first gourd roller (2) and the second gourd roller (4) through the partial heat treatment apparatus (3) so that the drawing occurs partially in the longitudinal direction of the filament. Make the thick and thin parts of the filament irregular. In particular, thick and thin portions can be generated depending on the rotation of the upper and lower circular disks and the presence or absence of contact between the groove portions.

In addition, in the present invention, after passing through the partial heat treatment apparatus, a hot plate heater having a temperature of 90 ° C. to 150 ° C. may be additionally installed to supply thermal energy required for stretching. If the fiber surface is treated at a temperature above the glass transition temperature, the necking phenomenon generated in the fiber can be more easily repeated.

In the manufacturing method of the attitude of the present invention, it is possible to control the quantity of the thick portion per unit length of the poise yarn by adjusting the rotational speed and the fiber traveling speed of the partial stretching device apparatus. For example, if the grooves 50 formed on the upper and lower circular disks of the partial drawing device apparatus are properly aligned, four grooves are formed, and if the fiber moves 1m while the circular disk is rotated one time, four per unit length (1m) The regular posture with the thick parts of the dog is manufactured.

In the present invention, the draw ratio between the first gourd roller and the second gourd roller should be 1.3 to 1.6. If it is less than 1.3, yarn instability and shrinkage and strength decrease due to unstretched are expected. Falling problems can occur.

In the case of processing the pore yarn with a general polyester unstretched yarn, the heat treatment condition of the hot plate is typically 140 to 190 ° C., and the draw ratio is 1.3 to 1.6. In the case of the present invention, a low viscosity polymer in a polyester hollow filament is used. Since there exists a part, it must pass while passing the 2nd goth roller at the draw ratio 1.3-1.6 after passing the partial drawing apparatus 3 of 110-150 degreeC which is 30-40 degreeC lower than a normal case. In addition, after the stretching, the second gourd roller should be subjected to heat treatment at 30 to 40 ° C. for the quality stability of the ready manufactured company. If this step is omitted, the yarn properties of the final product may be uneven.

Therefore, according to the present invention, it is possible to give a natural dichroic appearance by the melange effect by the poise yarn while maintaining the lightness by using a polyester hollow filament of a circular cross section, and provides a poise yarn having a natural stretch property can do.

Hereinafter, the following examples are given as non-limiting examples of the production method of the polyester posture yarn of the present invention.

[Examples 1-3]

A high-viscosity polyester polymer with an intrinsic viscosity of 0.50 dℓ / g and a low-viscosity polyester polymer with an intrinsic viscosity of 0.64 dℓ / g, in side-by-side form, using the POY composite spinning basic facility under the spinning conditions shown in Table 1 After preparing ester POY 85/12, the hollow polyester POY 85/12 was wound four times on the first goth roller under the conditions as shown in Table 2, and then the portion having a surface temperature of 120 ° C. After passing through the heat treatment apparatus and wound through the second gourd roller five times to draw and wound at the draw ratio shown in Table 2 to prepare a polyester posture yarn, weaving for the elastic lining generally used a lot using the manufactured yarn And the dyeing process is shown in Table 4 after the completion of the fabric to evaluate the physical properties as shown in Table 3.

division Condition chip drying
High IV 0.64 dl / g. 160 ℃ × 80 Hr Low IV 0.50 dl / g. 160 ℃ × 80 Hr Radiation temperature 290 ~ 295 ℃ G / R 1 speed 3,230m / min G / R 2 speed 3,230m / min winder speed 3,200m / min pack / detention Half moon 2 slit type Quenching 0.45 m / sec

division Example 1 Example 2 Example 3  Firing speed (m / min) 700 700 700 1st high speed roller D / R ratio 1.006 1.006 1.006 1st high speed roller temperature (℃) 65 60 65 2nd high speed roller D / R ratio 1.300 1.410 1.410 Second gourd roller temperature (℃) 40 40 40 Over feed 0.9825 0.9825 0.9825 Partial Heat Treatment Device Temperature (℃) 110 110 130

division Slope Weft group fair Condition PET 30/24
11,260 PET TTD 60/12
90 books / IN Plain weave R / W-P / Setting-Dyeing

Processing condition Stance Yarn Material Properties 2nd high roller DR ratio Partial Heat Treatment Temperature 1st high roller temperature Island
(D) burglar
(g / d) Shindo
(%) Shrinkage
(%) U% Example 1 1.300 110.00 65.00 64.81 2.70 59.63 34.74 3.67 Example 2 1.410 110.00 60.00 59.84 3.08 45.34 39.31 2.56 Example 3 1.410 130.00 65.00 59.70 3.10 44.07 35.86 2.39

1 is a schematic diagram of a processing apparatus for the production of a polyester posture yarn of the present invention.

2 is a cross-sectional view of a partial heat treatment apparatus of a processing apparatus for producing a polyester posture yarn of the present invention.

Figure 3 is a cross-sectional photograph of a polyester hollow filament of a circular cross section which is a material for producing a polyester posture yarn of the present invention.

Figure 4 is a cross-sectional photograph of a polyester hollow filament of a circular cross section which is a material for producing a polyester posture yarn of the present invention.

Figure 5 is a photograph of the appearance of the fabric woven and dyed with the present invention polyester posture yarn.

Figure 6 is an enlarged view of the fabric photograph of FIG.

＊ Explanation of symbols for main parts of drawing

DESCRIPTION OF SYMBOLS 1 Polyester hollow filament 2nd 1st high roller

3: partial heat treatment apparatus 4: second high heat roller

5: winding device 10: upper fixing piece

20: lower fixing piece 30: upper circular disk

40: lower circular disk 50: groove

Claims (4)

After passing the bundle of polyester hollow filament of circular cross section spun into a composite yarn with two types of polyester polymers having different viscosities three to six times at 60 ~ 75 ℃, the surface temperature is 110 ~ 150 After passing through the partial heat treatment device at ℃, and passed through the second high speed roller at 30 to 40 ℃ 3-6 times to draw and draw with a draw ratio of 1.3 to 1.6 and wound to give fineness difference between the polyester hollow filament of the circular cross section Method for producing a hollow polyester poised yarn excellent in elasticity. The apparatus of claim 1, wherein the partial heat treatment apparatus includes two upper and lower circular disks corresponding to coaxial lines and rotating in the same direction, wherein the upper and lower circular disks each have one or more grooves on an outer circumferential surface thereof to pass through the disk. A hollow polyester filament manufacturing method having excellent elasticity, characterized in that the polyester hollow filament is formed to repeat contact and non-contact with the outer peripheral surface of the circular disk. The method according to claim 1, wherein after passing through the partial heat treatment apparatus, a hot plate heater having a temperature of 90 to 150 DEG C is further passed. The method according to claim 1, wherein the circular hollow polyester filament of the circular cross section is composed of a composite spinning of a low viscosity polyester polymer having an intrinsic viscosity of 0.40 to 0.60 dl / g and a high viscosity polyester polymer having an intrinsic viscosity of 0.60 to 0.80 dl / g A hollow polyester filament manufacturing method having excellent elasticity, characterized in that the cross section is a polyester hollow filament.

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