KR101713415B1 - Process Of Producing Thin And Thick Drawtextured Yarn Having Fine Melange Effect - Google Patents

Abstract

The present invention relates to a method for manufacturing a mixed-state staple flame-retarding mixed filament, which is characterized in that it is difficult to establish a four-step process condition due to the strength drop of CDP, low melting point, To a method of manufacturing a twisted yarn.

Description

Technical Field [0001] The present invention relates to a process for producing a fine-grain melange yarn,

The present invention relates to a method for producing a post-fineness mixed-prone yarn for twisting posture-fineness mixed filaments.

Among fashion consumers who are changing rapidly, the most important thing is the fashion and functionality. In particular, in the case of garments used in specialized leisure areas such as mountain climbing wear, golf wear, ski wear, etc., functionality is the most important, and the functions such as warmth, light weight, quick drying, quick heating, In the case of clothes worn in life, it is most demanded for fashion that satisfies various designs. In response to these consumer demands, the development of materials capable of manifesting a variety of fashion in weaving, dyeing and processing companies in yarns has been re-emphasized recently. Among them, melange materials have been continuously developed, to be.

The melange effect is a function of mixing staple fibers stained with different colors so that they appear as gray, and is expressed through dyeing by mixing short fibers in the yarn and weaving step. It is a function to produce yarn mainly by mixing fibers with different dyability or by using heterogeneous material as weaving in weaving.

In recent years, among the most important consumer segments of the fashion market, those who are in their 20s to 40s, especially those in their 30s who are in a social life, are increasingly purchasing apparel products that combine fashionability and functionality. Unlike casual and casual clothing, casual and sporty cat pots look more and more popular. Because of this casual and sport trend trend, the melange material is widely applied in the development of textile materials for casual use. In addition to its luxurious appearance, three sizes, softness, softness and cotton-like feel for lightweight It is a trend that is demanded as an important function.

Conventional melange materials are mainly produced by spinning staple fibers having different colors by incipient dyeing, or by processing two different kinds of filaments (filament), or by mixing different materials by weaving in weaving step In recent years, a number of techniques have been developed to express the dichroic effect in the filament itself through the combined spinning of the dissimilar polymer.

On the other hand, efforts have been made to obtain a melange effect through fusing with a CDP (Cation Dyeable Polyester) material among the polyester. CDP Yuan has been developed and commercialized as a special product that can produce a chemical plant with batch polymerizer, which is free from the restrictions of other products when manufactured, and exhibits clear transfer of silk and color.

CDP (Cation Dyeable Polyester) is a polymer obtained by copolymerization of Dicarbo methoxybenzene sulfonate (DMBS), which is obtained by polymerizing a polyester material that can be dyed with conventional disperse dyes, and is called a CDP source. -SO ₃ Na, which is a functional group, is dissociated in aqueous solution to become -SO ₃ anion, and is dyed by ionic bonding with cationic dye D-NH ₃ cation. However, DMBS, which is used as an additive, has a lower methanoxy group in the meta position of benzene and has lower crystallinity and melting point than ordinary polyester materials. Therefore, the strength of the DMBS is lower than that of normal polyester, It is necessary to pay attention to the process, and the physical properties of the fabric due to the low strength of the yarn are deteriorated and it is difficult to expand the post-process due to the low melting point.

KOKAI Publication No. 2002-0003448 (published on Jan. 12, 2002) discloses a method for producing CDP yarn in which productivity and physical properties are improved by high-speed spinning by adding a crystal orientation inhibitor and polymerizing it to produce POY, We have provided technology that improves fairness.

In this case, however, CDP yarn is required to be mixed with other materials through a four-step process in order to produce a melange effect, It is very difficult to establish the processing conditions of the four-step process through the lowering and the lower melting point, and the tear strength may be weak.

In order to prepare the mixed yarn for the pre-mixed filament yarn, the filament yarn is fed separately from the filament yarn and the three yarn filaments are mixed in the yarn processing step. The difference in thermal properties and physical properties between the filaments having different yarn sizes The conditions were very tricky. Particularly, in the case of the mixture of common polyethylene terephthalate filaments and cationized terephthalate polyethylene terephthalate filaments which can maximize the melange effect, it is very difficult to establish four processing conditions due to the low strength and low melting point of the cationic terephthalate polyethylene terephthalate And there is a problem that the tear strength is weak.

Korean Patent Publication No. 2002-0003448 (Dec. 12, 2002)

Therefore, according to the present invention, by using a mixed state filament of a state-of-the-art filament using a mixed filament of a state-of-the-art filament using a different polymer, the thermal property and physical property difference between two filaments having different fineness, the specific strength of CDP, And to provide a manufacturing method of a mixed false-twist yarn for overcoming severe trimming process conditions.

Therefore, according to the present invention, after passing through the first feed roller, the mixed filaments of the fine filament yarn are passed through a first heater at 160 to 190 DEG C to perform a first heat treatment and supplied to a disk type smolder, / m, and is entangled in the entangling apparatus at an air pressure of 1.0 to 4.5 kg / cm < 3 > through a second feed roller, the over feed ratio between the first feed roller and the second feed roller is set to 3.0 to 8.0% After passing through a second heater at 130 to 160 캜 and performing a second heat treatment, the third feed roller is passed through the third feed roller so that the over feed rate between the second feed roller and the third feed roller is 5.0 to 9.0% Which is excellent in delicate melange development.

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

The present invention relates to a method for producing a mixed-state staple-filament mixed filament yarn, which is characterized in that it is difficult to establish a four-step process condition due to the strength drop of CDP and low melting point, And a method for producing the false-twist yarn.

In the present invention, unlike the conventional method in which a pre-filament yarn and a three-filament filament are separately fed to produce a false-twist yarn, the filament yarn is mixed with a filament yarn It is characterized in that it feeds the mixed filament in the state of mixed filaments in a single path and processes it.

In the present invention, the above-mentioned postal-fine-needle filament mixed filament is obtained by simultaneously spinning two kinds of polyester fibers through the same spinneret, and in particular, it is possible to spin a regular polyethylene terephthalate polymer and a cationic tribasic polyethylene terephthalate polymer It is. The preparation method of the mixed filament is described below.

The pre-mixed filament is prepared by melt extruding two polymers by extruder for general polyethylene terephthalate polymer and extruder for cation-polymerized terephthalate polymer, respectively, and transferring them to separate polymer feed conduits for spinning.

Wherein the general polyethylene terephthalate polymer is a polymer having a relative viscosity of 0.60 to 0.65, a water content of 30 ppm or less, a melting temperature of 250 to 270 DEG C and a glass transition temperature of 75 to 82 DEG C, It is preferable to use a polymer having a relative viscosity of 0.62 to 0.68, a water content of 30 ppm or less, a melting temperature of 230 to 250 캜 and a glass transition temperature of 78 to 82 캜 as the terephthalate polymer because the radiation can be stabilized.

When the ratio of PET to CDP is less than 20%, the weight ratio between the two types of polymers may be set to be a general filament monofilament polymer The degree of fineness of the filaments is difficult to be reduced and the problem of strength reduction may occur. A small amount of an additive such as a quencher or an ultraviolet screening agent may be added to the two kinds of polyester polymers.

The molten polymer is supplied to the same spinneret having alternating slits for a general polyethylene terephthalate polymer and slits for the cationic fluoride polyethylene terephthalate polymer, and is simultaneously radiated. The spinneret is used for spinning of a conventional polyester filament Can be used. In the present invention, the method of adjusting the fineness in spinning the fly-sitting filament mixed filament is to control the difference in filament fineness by controlling the discharge amount of the polymer discharged from the hole of the spinneret. In the case of the present invention, a general polyethylene terephthalate polymer is spun into a fineness, and the cationic salt-modified polyethylene terephthalate polymer is spun into three finenesses. The discharge amount of the general polyethylene terephthalate polymer and the cationic terephthalate polyethylene terephthalate polymer is determined by the amount of the discharged polymer per one rotation of the extruder (one rotation capacity of the pump) and the number of revolutions of the motor. The rotation capacity of the pump is 0.3 to 2.4 cc / The revolutions of the motor can be adjusted from 5 to 50 rpm using rev.

 The spinning temperature in the spinneret is adjusted to 290 to 310 ° C, which is suitable for spinning.

The yarn which is simultaneously melt-spun through the spinneret is solidified by cooling it while passing through a yarn cooling section of the lower portion of the spinneret as in a conventional method. In the present invention, the yarn is cooled by a cooling wind at 20 to 25 ° C. The filaments solidified while passing through the yarn cooling section were drawn while applying an oil and then drawn through a first godet roller and a second godet roller at a stretching ratio of 1.00 to 3.50 to ensure processability, . In the present invention, since the conventional mixed spinneret is used, the difference in the elongation of the fibers divided in one spinnerette may be about 5%, and it may cause defects in weaving and cheap spinning. Therefore, The draw ratio should be adjusted as shown in FIG. When the draw ratio is less than 1.00, the elongation of the mixed filament to be produced is increased but the strength is lowered. After the stretching, oiling is carried out and the mixture is taken up to produce a state-of-the-way mixed filament capable of homogeneous blending of the present invention.

First, as shown in FIG. 2, after passing the hot-filament mixed filament 1, which is a raw material, through a first feed roller 2 and passing through a first heater 3 at 160 to 190 ° C., The mixed filament is prepared by mixing and spun filaments of a single filament having a single filament fineness of 0.5 to 3d and a single filament filament having a single filament fineness of 1 to 10d. For example, the filament of the common polyethylene terephthalate The cationic salt-pegylated polyethylene terephthalate filaments may have a fineness. In another example, the general polyethylene terephthalate filaments may have a fineness and the cationic phosphates may have three fineness.

In general, polyethylene terephthalate filament has a heat treatment temperature of about 190 ° C, whereas a cationized tallow polyethylene terephthalate filament has a low melting point and a high crystallization temperature and a heat treatment temperature of about 150 to 160 ° C. Therefore, the first heat treatment condition should be set at 160 to 190 ° C. If the first heat treatment temperature is lower than 160 ° C, the polyethylene terephthalate filament can not be thermally fixed easily, which may lead to deterioration of the flammable effect. If the temperature is higher than 190 ° C, the cationic polyvalent polyethylene terephthalate filament Problems can arise.

After the first heat treatment, the yarn is supplied to the disk type fusing device 4 to soften the yarn 10 to 25 N / m in order to exhibit a proper stretchability and soft touch of the yarn. In the case of the belt type, It is impossible to progress to coiling due to the simultaneous occurrence of grain boundary, which is caused by abrasion by the belt, so that the friction of the yarn is relatively high. Especially, the cationic chlorinated polyethylene terephthalate filament is weak in strength and is likely to cause yarn breakage. Therefore, in order to improve this, the present invention employs a disc type having relatively low friction, and works with the temperature and the heater temperature raised together with the speed and the stretching ratio. As a result, .

And is entangled in the entanglement apparatus 6 at an air pressure of 1.0 to 4.5 kg / cm3 via the second feed roller 5 after the above-mentioned twisting.

The over feed ratio between the first feed roller and the second feed roller is preferably from 3.0 to 8.0%. If the ratio is less than 3.0%, there is a problem of non-fusing due to excessive tension. The overfeed rate between the second feed roller and the third feed roller is preferably from 5.0 to 9.0%. If it is less than 5.0%, the crimp may be strongly wound due to excessive tension. If the ratio exceeds 9.0%, the yarn is loosely wound around the take- It may affect the quality of the yarn after it is supplied.

Thereafter, the mixture is passed through a second heater 7 at a temperature of 130 to 160 ° C, subjected to a second heat treatment, passed through a third feed roller 8, and taken up by a winding section 9 to produce a post- , And the second heat treatment may be omitted depending on the application.

In the present invention, a fabric excellent in delicate melange development can be produced by using the pre-mixed isothiocyanate mixed yarn produced as described above.

According to the present invention, the use of the mixed-spinning state-of-the-art mixed filament using the different polymer makes it possible to obtain a delicate material having excellent melange appearance due to the difference in thermal properties and physical properties between the two filaments having different fineness. When woven with a fabric, it is possible to exhibit stretchability by a wrinkle crimp, a warm feeling and a delicate gloss and touch feeling due to a stabbing degree of fineness.

Brief Description of the Drawings Fig. 1 is a photograph of an actual microscope showing the appearance of the mixed false-
Fig. 2 is a schematic view of a pretreatment system of the present invention. Fig.

The following examples illustrate non-limiting examples of the process for preparing the ready-mixed-textured false-twist yarns of the present invention.

[Example 1]

According to the conditions shown in the following Table 1, two kinds of polymers (salt-type polyethylene terephthalate chips (manufactured by TK Chemical)) were extruded by Extruder for ordinary polyethylene terephthalate polymer and extruder for cationized tallow polyethylene terephthalate polymer in the melting step And regular polyethylene terephthalate chips were purchased from Regular SD Polyester chip manufactured by Hyosung Co., Ltd.) were melted and transferred to a separate polymer supply conduit, and then supplied to the spinning stage to spin the filament. The results are shown in Table 2.

division Example 1 PET SD / CDP ratio 57:43 Extruder
Temp. (占 폚) #One 325/311 #2 328/313 # 3 318/306 #4 Press (A / B) 13.0 / 17.0 Mainfold Temp. (℃) 292/290 Spinbeam Temp. (℃) 288 Spinneret A / B 36hole (18 + 18) Polymer
M / P Capacity (cc / rev) 0.6 Rpm 11.13 Finish oil Concentration (%) 15 Rpm 19 Convergency (m) 1.6 GR1 (m / m) / Temp. (占 폚) 1,530 / 89 GR2 (m / m) / Temp. (占 폚) 4,155 / 125 (M / m) 4,100 DR 2.90

division Fineness (d) Strength (g / d) Shinto (%) Heat shrinkage ratio
(%) Dry heat shrinkage
(%) Example 1 34.17 4.42 31.89 -8.0 -16.3

In the case of cross-section analysis to confirm homogeneous cross-linking, it was difficult to judge homogeneous cross-linking by SEM observation. As a result of analysis using polarizing microscope capable of distinguishing different polymers as shown in FIG. 2, Homogeneous hybridization was confirmed. To prepare a false-twist yarn production process for expressing stretchable and soft touch feeling by using the prepared state-of-the-filament mixed filament, the process was performed according to the conditions shown in Table 3. In order to solve the deterioration in flammability caused by the difference in the flammable temperature between PET and CDP .

   - Equipment: High-speed composite yarn mixer (Muratec No.33H, Disc type)

Facilities: disc type Working condition
Condition (Mpm) 500 DR 1.74 Torsional strength T2 (g) 21 First heater (℃) 170 Second Heater (℃) 150 The first over feed rate (%) 4.39 The second over feed rate (%) 6.93 Interlocking pressure (kg /) 2.4 Interlocking nozzle diameter 1.1 W / D Angle 14 Physical Properties Fineness 35.70 Strength (g / de ') 4.70 Shinto (%) 26.00

[Example 2]

As a result of analyzing the tear strength of the fabric woven using the false twist yarn, the warp yarn is 760 cN and the warp yarn is 1,100 cN, which satisfies the target warpage of 500 cN or more and weft yarn of 200 cN or more. In Example 2, stretchability, warmth, and feel due to the false twist crimp were improved

division Tear strength (cN) slope Weft Example 2 760 1,100

1: Stamped fineness mixed filament 2: First feed roller
3: first heater 4: disc type combustible device
5: second feed roller 6: interlocking device
7: second heater 8: third feed roller
9:

Claims (3)

The pre-mixed filament is passed through a first feed roller, passed through a first heater at 160 to 190 ° C, subjected to a first heat treatment, fed to a disc-shaped combustible device and fired at a melt tension of 10 to 25 N / m , And the second feed roller is interlaced at an air pressure of 1.0 to 4.5 kg / cm3 in an entanglement apparatus, the over feed ratio between the first feed roller and the second feed roller is set to 3.0 to 8.0%
After passing through a second heater at 130 to 160 캜 and performing a second heat treatment,
Wherein the third feed roller is passed through a third feed roller so that an overfeed rate between the second feed roller and the third feed roller is 5.0 to 9.0%, and is wound up at the take-up part. delete delete

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