KR20030048564A - Manufacturing method of highly brightend and soften polyester shaped fiber and raising warp kitting fabric knitted up thereof - Google Patents

Abstract

PURPOSE: A manufacturing method of polyester modified cross-section fiber having excellent luster and soft feeling is characterized by having excellent workability. A raised warp knit fabric is knitted out of the same. CONSTITUTION: Polyester modified cross-section fiber is obtained by the steps of: (i)using polyester polymer having 0.640-0.670 of inherent viscosity; (ii)spinning at 0.20-4.5g/min.hole through spinneret of a spinning base(2); (iii)setting temperature of the surrounding spinning base to 275-290deg.C; (iv)quenching polymer with cooling air(1) of 18-23deg.C at 12-40m/min. of air supply; (v)oiling the quenched polymer at intervals of 750-1600mm from the spinning base; (vi)heating the polymer on a first roller(5) and a second roller(6) at 70-90deg.C of a drawing temperature; drawing between the first roller(5) and a third roller(7) in a drawn ratio of 1.3-4.0; heating on the third roller(7) in a temperature range of 110-130deg.C; and then winding at 4000-6500m/min. The spinneret has 3-20 of modified ratio(FR), over 1.20 of shape factor(SF) and 0.5-1.5mm of short-axis width.

Description

Manufacturing method of highly brightend and soften polyester shaped fiber and raising warp kitting fabric knitted up knitting}

The present invention relates to a method for producing a polyester sectional cross-section yarn having excellent gloss and soft touch, which is mainly used for knitting a warp knitted fabric having a high quality gloss and a soft touch, and having excellent brushing properties.

Conventional circular cross-section yarns made using semi-dull polyester polymers are not glossy, soft to the touch, and cannot be made of high-quality products using fabrics and knits. not,

The product's competitiveness fell and it was difficult to respond to the various needs of customers.

In order to improve such a problem, a method of using a bright polymer or a semi-dull polymer is conventionally used, but a method of making a deformed cross-section yarn has been proposed. Is not easy to adjust, and in the latter case, the proper release degree (SR) and the number of strands, the proper discharge amount range, the shape factor (SF), the cooling direction, the oil supply method and the oil supply position, There was no specific reference to general manufacturing techniques such as proper drawing conditions, heat treatment conditions, and yarn properties, and it was not possible to present specific applications that could utilize the gloss, soft touch, and brushing properties of the polyester release cross-sections thus prepared. In order to improve such a problem, it is necessary to develop a more specific method for producing a polyester cross section yarn and a use that can utilize the advantages of the stretched yarn by the manufacturing method of the present invention.

The premise of the present invention is to use the semi-dull polyester polymer raw material as it is, to reduce the development investment cost by utilizing the existing equipment, and to release the cross-section of the spinneret spinneret, and then spinning under appropriate conditions In solving the above problem. Of course, in order to solve the above problems, various methods for producing polyester cross-section drawn yarns have been applied, but specifically, only the shape of the spinneret in the spinneret rather than suggesting spinning, cooling, lubrication, stretching and winding conditions, etc. It is difficult to exert the desired glossiness, feel, and brushing, and therefore, there is a limit to limiting a new use utilizing the glossiness and brushing of polyester release cross-sectional drawing.

Looking at the prior art, various technologies are disclosed by Korean Patent Publication Nos. 1989-2449, 1996-37883, 1997-27385, 1999-7702 and 1999-1100. In particular, Patent Publication No. 1989-2449 discloses a method of making a single-sided cross-section yarn by joining when discharged from adjacent 4 to 10 spinning holes, but it is difficult to maintain stable workability and quality, in particular, it is difficult to control gloss, There is a poor brushed end, and Patent Publication No. 1996-37883 introduces a method for making a hetero-cross-section drawn yarn using heterogeneous polyesters having different intrinsic viscosity. In addition, Patent Publication No. 1997-27385 also applies a polyester hetero-cross-section drawn yarn by fusing the polymer with adjacent spinning holes when discharging the polymer from the spinneret in the spinneret in a similar manner as the aforementioned Patent Publication No. 1989-2449. The manufacturing method has been introduced, but this also has a problem that it is difficult to secure the spinning workability and high-quality gloss. In Patent Publication No. 1999-7702, only the degree of release degree of the spinneret in the spinneret is known, the shape of the spinneret and the gloss of the drawn yarn are unclear, and the relationship with the touch is also unclear. In addition, Patent Publication No. 1999-1100 uses a spinneret in which at least three spinners with different mold releases are mixed to eject and disassemble the cross-section drawn yarn, which makes it difficult to secure stable workability and quality, and difficult to control gloss. there was.

The present invention improves the problems of the prior art to produce a high-quality gloss, and to produce a polyester release cross-section yarn having a stable workability and an appropriate release degree so that it can be applied to the use of warp knitted fabrics with a soft touch and excellent brushability The purpose of this method is to obtain a brushed warp knitted fabric which is knitted using the same method.

1 is a production process diagram for manufacturing a release cross-section yarn of the present invention,

Figure 2 is an enlarged view of the spinneret of spinnerets for manufacturing a cross-sectional stretched yarn of the present invention,

Figure 3 is a cross-sectional view of the spinneret of the spinneret for manufacturing a cross-sectional drawn yarn of the present invention,

Figure 4 is an enlarged view of the arrangement of spinnerets for manufacturing a cross-section drawn yarn of the present invention,

Figure 5 and Figure 6 is an enlarged cross-sectional view of the drawn cross-section drawn yarn produced by the present invention,

FIG. 7 is a view illustrating an arrangement of spinnerets of spinnerets for manufacturing a cross-section stretched yarn of the present invention. FIG. 6A illustrates a columnar array and FIG. 2B illustrates a triangular array.

※ Explanation of Codes on Major Parts of Drawings

1: cooling air 2: spinneret

3: emulsion impregnation position 4: emulsion imparting device

5: first roller 6: second roller

7: third roller 8: drawing company

9: winding machine 10: spinner

A: short axis of spinneret B: long axis of spinneret

a: shortening of the drawer b: long axis of the drawer

When explaining the present invention in detail, using a polyester polymer having an intrinsic viscosity of the polymer 0.640 ~ 0.670, the degree of release (FR) of the spin hole in the spinneret (2) is 3 to 20, preferably 5 to 15, The shape coefficient SF is greater than 1.20, and the width of the short axis A of the spinneret in the spinneret 2 is 0.6 mm to 1.3 mm, more preferably 0.8 to 1.1 mm, and the spinneret 2 The number of spinnerets is discharged in the range of 0.20 ~ 4.5g / min.hole per minute through the spinneret 2 having a number of spinnerets of 24 to 144, preferably 36 or more, and at this time, the spinneret of the spinneret The temperature ranges from 275 ° C to 290 ° C, and an arrangement direction of the spinneret in the direction of the cooling air 1 for quenching the polymer discharged through the spinneret 2 is determined by the long axis of the spinneret in the spinneret 2. B) direction and the direction of the cooling air (1) to be parallel or vertical direction, preferably the direction of the long axis (B) of the spin hole It is made perpendicular to each air 1, the temperature of the cooling air (1) is suitable 18 ℃ ~ 23 ℃, the wind speed of the cooling air (1) is in the range of 12 to 40 m / min is more preferable It is suitable for 18-30m / min. In addition, the quenched polymer is preferably lubricated with an oil in the range of 750 to 1600 mm, since the radiation tension is lowered to improve workability. The quenched polymer with cooling and emulsion is heated in the first roller 5 and the second roller 6 to a stretching temperature of 70 to 90 ° C, and the speed difference between the first roller 5 and the third roller 7 After stretching at a draw ratio of 1.3 to 4.0 which is a ratio, heat treatment is performed in a third roller 7 in a temperature range of 110 to 130 ° C., wound at a speed of 4000 m / min to 6500 m / min, and a degree of release (FR) of 2.5 to 10.0. And a polyester release cross-section drawn yarn having a high-quality glossiness and a soft touch with a fineness of one strand of drawn yarn being 1.01 to 5.0 denier.

At this time, in order to express the luxurious gloss, soft touch, and excellent brushing property, the polyester unevenly drawn stretched yarn has a fineness of 1.0 to 5.0 denier, preferably more than 3.0 denier. It is desirable not to. The production of polyester densified cross-section drawn yarn of 1.0 denier has a poor threadability during spinning and stretching, resulting in poor workability and poor brushability. Here, the release degree (SR) of the spinneret in the spinneret and the release degree (FR) of the drawn yarn produced therefrom are the ratio of the length of the short axis (A) to the length (B) of the long hole of the spinneret, respectively, The ratio of the length of the short axis (a) to the length of) means respectively. The shape factor SF of the spinneret is defined as the ratio of the circumferential length RC of the circular radiator of the same cross-sectional area to the measured circumferential length MC of the cross section of the spinneret in the spinneret.

After the canoning work using the polyester cross-section drawn yarn manufactured in the above-described method, it is reassembled by double raschel, and the length of the pile is 1 ~ 15mm Toy is used to produce warp knitted fabrics with excellent gloss, feel and brushability.

The method for manufacturing the release cross-section yarn is a polyester release cross section applied to warp knitted fabrics with excellent gloss, soft touch and brushing, without the need for additional equipment investment because the existing polymerization equipment and DS equipment can be used as it is A stretched yarn can be manufactured.

Hereinafter, the manufacturing process will be described in more detail.

The release degree (SR) of the spinneret in the spinneret (2) is suitable for 3-20. Preferably, it is 5 to 15, and if the degree of release (SR) of the spinneret in the spinneret (2) is 3 or less, the degree of release (FR) of the stretched yarn (8) is almost round, and the gloss falls, and the spinneret (2) If the degree of release (SR) of the spinneret exceeds 20, it is difficult to secure workability due to the occurrence of trimming during spinning and stretching, and it is impossible to manufacture a stretched yarn having a desired gloss and feel. In addition, in order to express a soft touch, the number of spinnerets in the spinneret (2) is increased from 24 or 144 levels below the existing level of 12 to make stretch yarns, and the touch becomes more excellent.

More preferably, 36 or more are preferable. The width | variety of the short axis A of a spin hole is suitable in the range of 0.6-1.3 mm, More preferably, it is a case where it becomes 0.8-1.1 mm. When the width of the short axis (A) of the spinneret is smaller than 0.6 mm, there is a difficulty in precision manufacturing, and since clean cleaning of the spinneret is difficult, the spinneret should be manufactured in the range of 0.6 mm or more.

By using the drawn yarn (8) made by the above-mentioned manufacturing method, canoning work, double laschel (Double Raschel) to proceed to the knitting, hair (dye), dyeing, processing to the length of the hair (pile) 1 ~ 15mm It is able to knit warp knitted fabrics of various colors with excellent gloss and feel of intoy and excellent brushing.

The most important factor that affects the glossiness of polyester drawn section drawn yarns and warp knitted fabrics is the cross-sectional shape drawing of drawn yarns, and the effect on the cross-sectional shape of drawn yarns is spinnery release degree, spinning temperature, discharge amount, cooling start position, cooling wind velocity. Orientation, elongation ratio, spinning speed, etc., the optimum combination of these, the draw yarn of the polyester release cross section having the appropriate release degree is produced, the most important factor is also determined as the release degree of spinneret. The various symbols, analytical expressions, and vocabulary described above will be described below.

Se -mi dull polyester Polyester containing TiO2 (titanium dioxide) which acts as 0.20 to 0.60 wt% matting agent in the polyester polymer Warp knit It is made by the knitting method of making upshift in the upward direction by many slopes arranged in parallel and there are three kinds such as Tricot, Lassell and Milanis. BRIGHT polyester Polyester containing TiO ₂ (titanium dioxide) which acts as a matting agent of 0.04-0.10 wt% in the polyester polymer SR Spinnerret ratio of the spinneret: the ratio of the length (A) of the short axis to the length (B) of the long axis of the spinneret, i.e., B / A FR Filament ratio of the drawn yarn: the ratio of the length of the short axis (a) to the length (b) of the drawn yarn, i.e., b / a Raising Raising is caused by scratching a nap on one or both sides of the fabric, with dry hair and wet hair. SF The shape factor is the ratio of the circumferential length (RP) of a circular radiator of the same cross-sectional area to the measured circumferential length (MP) of the cross section of the spine hole in the spinneret. MC Measured circumference, measured circumference of the radial hole cross section RC Rounded circumference, circular circumference circumference with the same area as the radial hole Single yarn denier A unit representing the thickness of filament yarn, also called fineness, expressed in grams of real weight of 9000 meters in length. Scene work Warping, one of the weaving preparation process, the operation of winding the drum or beam by arranging a predetermined number of slopes so that length and tension become a predetermined butterfly Double raschel Use multiple guide bars with one or two needle stretch needles. This knitting machine is capable of various knitting such as lace as well as conventional knitting. Work Using a single needle or more thread as a material, the circular needle is used to make a circular ring, and the circular and circular ring is connected to make a wide cloth. Shearing It is called hair-shape and is a process mainly performed in the processing of wool, and after raising it, it arranges the uneven fluff to a certain length and arranges the appearance beautifully. Pile It refers to hairs or loops protruding from the fabric surface, such as hair on the velvet fabric surface and loops on the towel fabric surface. Toy purpose Uses such as toys, toy dolls

Hereinafter, the present invention will be described in detail by way of examples.

Examples 1-10

Using a polyester polymer having a polymer intrinsic viscosity of 0.653, the spin hole has a release degree of 9.5 to 10.7, a spin hole release rate of 1.90 to 1.96, and a number of spin holes of 36 to 72. Discharge amount per minute is 1.02 to 1.12 g / min.hole, emulsion feeding position is 1400 mm under the detention, draw ratio is 2.04 to 1.92, winding speed is 4500 to 5000 m / min, and one strand denier is 2.04. Polyester mold release cross-section yarns having a mold release degree of 3.41 to 4.53 were prepared. Table 1 shows the contrast between brushing, gloss, and touch of warp knitted fabrics prepared using this stretched yarn. .

Comparative Examples 1 and 2

As Comparative Example 1, a polyester polymer having a polymer intrinsic viscosity of 0.653 was used to have a release degree of 1.0 in a spinneret, a number of spinners of 36, and a discharge rate of 1.12 g / min. Of holes per minute. At a 1400mm under emulsification position, the draw ratio was 2.17, and the winding speed was wound at 5000 m / min to prepare a polyester circular cross section drawn yarn having a denier of 2.04. The stretched yarn was used to compare the brushing, gloss, and hand feel of the warp knitted fabric.

In Comparative Example 2, a polyester polymer having a polymer intrinsic viscosity of 0.653 was used, and the release hole in the spinneret had a release degree of 10.7, the number of spinnerets was 12, and the discharge rate per minute was 3.63 g / min.hole. , Emulsion impregnated position, the stretch ratio is 2.50 at 1400mm, and wound up at a winding speed of 5000 m / min to prepare a polyester release cross-section yarn having a denier of 26.54. The stretched yarn was used to compare the brushing, gloss, and hand feel of the warp knitted fabric. The results are shown in Table 1.

Table 1

division Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Long axis of spinneret (mm) 0.95 0.96 0.95 0.96 0.95 0.96 Single axis of spinning hole (mm) 0.10 0.09 0.10 0.09 0.10 0.09 Release degree of the ball 9.5 10.7 9.5 10.7 9.5 10.7 Number of spinneret 36 36 36 36 36 36 Arrangement of Radiation Columnar array Columnar array Triangle array Triangle array Columnar array Columnar array Discharge amount of spinneret (g / min, hole) 1.02 1.02 1.02 1.02 1.12 1.12 Cooling Air and Radiator Direction Perpendicular Perpendicular Perpendicular Perpendicular Perpendicular Perpendicular Emulsion application position (mm) 1400 1400 1400 1400 1400 1400 Drawing temperature (℃) 88 88 88 88 85 85 Elongation ratio 2.04 2.04 2.04 2.04 1.92 1.92 Heat treatment temperature (℃) 121 121 121 121 121 121 Winding speed (m / min) 4500 4500 4500 4500 5000 5000 Lee Hyeong-do 4.22 4.53 4.19 4.32 3.87 4.15 Denier of a strand of drawing company 2.04 2.04 2.04 2.04 2.04 2.04 Raising of warp knit Great Great Great Great Great Great Luster of warp knit Advanced Advanced Advanced Advanced Advanced Advanced touch Great Great Great Great Great Great

division Example 7 Example 8 Example 9 Example 10 Comparative Example 1 Comparative Example 2 Long axis of spinneret (mm) 0.95 0.96 0.96 0.96 0.26 0.96 Single axis of spinning hole (mm) 0.10 0.09 0.09 0.09 0.26 0.09 Release degree of the ball 9.5 10.7 10.7 10.7 1.0 10.7 Number of spinneret 36 36 36 72 36 12 Arrangement of spinneret Triangle array Triangle array Columnar array Triangle array Columnar array Columnar array Discharge amount of spinneret (g / min, hole) 1.12 1.12 1.12 1.12 1.12 3.63 Cooling Air and Radiator Direction Perpendicular Perpendicular parallel Perpendicular Perpendicular Perpendicular Emulsion application position (mm) 1400 1400 1400 1400 1400 1400 Drawing temperature (℃) 85 85 85 85 85 8 Elongation ratio 1.92 1.92 1.92 1.92 2.17 2.50 Heat treatment temperature (℃) 121 121 121 121 123 129 Winding speed (m / min) 5000 5000 5000 5000 5000 5000 Lee Hyeong-do 4.10 3.88 3.41 3.70 1.00 4.00 Denier of a strand of drawing company 2.04 2.04 2.04 2.04 2.04 6.54 Raising of warp knit Great Great Great Great usually Great Luster of warp knit Advanced Advanced Advanced Advanced Standard gloss Great touch Great Great Great Very good usually Bad

Inventive polyester release cross-section drawn yarn using the existing polymerization equipment and DSD equipment as it is, raw materials also use the existing semi-less polyester polymer as it is to release the cross-section of the spinneret in the spinneret, and then spinning under appropriate conditions As a result, it is possible to obtain a polyester release cross-section yarn having excellent gloss, soft touch, and brushing properties, which has a very economic effect.

Claims (2)

(Iii) A polyester polymer having an intrinsic viscosity of 0.640 to 0.670 is used. (Ii) The release degree (FR) of the spinneret in the spinneret (2) is 3 to 20, and the shape factor (SF) is greater than 1.20. The width of the short axis (A) of the spinneret (2) in the spinneret (2) is 0.5 to 1.5mm, and the number of spinnerets is discharged from 0.20 to 4.5 g / min.hole per minute through the spinneret having 24 to 144 (I) The spinneret has a spinneret temperature in the range of 275 ° C to 290 ° C, and the spinneret is arranged in the direction of the spinneret relative to the direction of the cooling air (1) for quenching the polymer discharged through the spinneret (2). (2) The long axis (B) direction of the spinneret and the direction of the cooling air (1) are parallel or perpendicular to each other, (IV) The temperature of the cooling air (1) is 18 ℃ to 23 ℃, cooling air ( The wind speed of 1) is set to 12-40 m / min, (V) the emulsion is impregnated at 750-1600 mm under the quenched polymer, and (VI) After heating to the extending | stretching temperature of 70-90 degreeC with the roller 5 and the 2nd roller 6, and extending | stretching with the draw ratio of 1.3-4.0 which is the speed difference ratio of the 1st roller 5 and the 3rd roller 7, After the heat treatment in the third roller (7) in the temperature range of 110 ~ 130 ℃, it is wound at a speed of 4000 ~ 6500 m / min, (iii) the degree of release (FR) is 2.5 ~ 10.0, the fineness of a strand of stretched yarn A method for producing a polyester release cross-section yarn, characterized in that it is 1.01 to 5.0 denier. Brushed warp knitted fabric, characterized in that the knitted yarn to be 1-15mm in length using the polyester cross-section drawn yarn prepared according to claim 1 as an effect yarn of the length of the pile (Pile).