JPS5994613A - Manufacture of combined polyester filament yarn - Google Patents

Abstract

PURPOSE:To obtain the titled combined filament yarn containing a high-shrinkage component and a low-shrinkage component in a mixed state, and having high bulkiness, by melting a polymer, spinning the polymer to a group having thick denier and a group having fine denier in a dispersed state, and winding up the yarn keeping the draft and the spinning speed of the thick denier group at a specific level. CONSTITUTION:A polyester polymer (e.g. polyethylene terephthalate) is melted and spun through a spinneret to obtain two or more groups of filament yarns having different denier of single filament. The spinning is carried out in a dispersed and/or concentric form using a spinneret (a) having the nozzles 1, 2 for the fine denier component and the nozzles 3 for thick denier component dispersed with each other, a spinneret (b) having concentrically disposed nozzles, a spinneret (c) having the nozzles in divided manner, etc. The yarn is taken up under the condition to attain a spinning draft of the thick denier group of >=350 and a spinning speed of 3,500-5,000m/min.

Description

[Detailed description of the invention]

The present invention relates to a method for producing a polyester blend yarn, and more specifically, a method for producing a polyester blend yarn, in which two or more groups of fibers with different denier fibers are processed by hot water treatment, such that the thick denier component becomes a high shrinkage component and the fine denier component becomes a low shrinkage component. This article relates to a method for producing a polyester blend yarn that is composed of filaments, has a significantly improved degree of mixing of thick denier components and fine denier components, and has a great norky feel. With the diversification, luxury, and individualization of clothing, research is being actively conducted to incorporate the desirable texture of natural fibers into synthetic fibers as well. In natural fibers used for clothing, such as wool and silk, the variation in individual ready-to-woven kasuri patterns is greater than that in synthetic fibers. However, rather than being a deficiency, this variation can be called an advantage. It is clearly effective. Therefore, even when it comes to synthetic fibers, there is a conscious difference in denier between the fibers. Difference in shrinkage, I, stacking, mixed multifilament 1
1 Te has been published by PR company I since 316 J. -+(1, such as i'17. How to spin P yarn and 17 V', spin multifilaments with different medium Ql t denier and physical property values 1' separately) Inquiry about the interlacing at the edge, drawing process, and temporary mixing process.
In order to spin each multifilament J1 separately, spinning 11. ' 41 'Iff Mf de=-le,
Material ec (f1'+) It is possible to change the texture, and it is possible to obtain a very rich cotton material with a wide variety of textures. city,
In history, the spinning j. Not only can it not be made higher,
In order to improve the degree of blending, it is necessary to add interlacing, and there is a drawback that the 1st stroke of J construction becomes extremely high. In addition, since the thread path of Wei (itl after Cao, one creel stand &, 117, etc.) is also difficult, it is not good in terms of workability. Ta. Of course, in order to eliminate the above-mentioned drawbacks, methods have also been proposed in which the fibers are spun during spinning. However, the mainstream method of these 11 is to spin different filaments to JP printing 1# denier, physical properties A), or from the first spinneret, and in this case, the equipment Due to the relatively low spinning speed of l- to 9μ, a stretching process is additionally required. In addition, the simplification of the equipment in 10n1゛, as it is, led to a decrease in work efficiency and was not convenient.Therefore, in an attempt to improve this method, high-speed spinning, for example, a spinning speed of 3500 m7xrrn, was adopted. A method for manufacturing the above-mentioned blended yarn has been proposed.In other words, the yarn is oriented and crystallized at high speed spinning, but the thick denier component and the fine denier component are mixed. When denier component -2 is extruded from the same spindle and spun at 350 (I nt /j+"), the fine denier component undergoes more oriented crystallization than the thick denier component, so the fine denier component has a low yield F(
In this method, the large denier component is the high shrinkage component, and this difference is taken as the shrinkage difference. 1. However, in this case, there was a big gap in terms of production.In other words, this method spins the components of ηI V denier simultaneously from the same gold, and From the 7-way side,
+tt between thick denier component and I'll denier component
##It is necessary to make the fat denier difference sufficiently large. However, Gun 7jA! @; When the Tenney A difference is increased,
Because the cooling rates of the thick denier component and the fine denier component are different, the thick denier component that has not been completely cooled and solidified and the fine denier component that has been completely cooled and solidified are spinning 1'' under the entire surface I.
Q Due to contact within Orrn, fuzz yarn breakage occurred frequently and yarn spinning-1
= A fatal bolt p1 occurs. As a method to solve this problem, various studies have been conducted on the cooling force conditions of the yarn, but no sufficient effect has been obtained, and in the present world, it is necessary to divide the denier component into the thick denier component and the thick denier component. For example, as shown in Figure 1 ← Spinning 1-1 Only the denier component is spun from the right half of the gold 1
For the -1 and left sitting portions, methods of producing only the thick denier component by π1 are mainly being promoted. In this case, the fine denier component and the large denier component are clearly separated and emitted from the RFI even after spinning from the spinneret, so even if the shrinkage rate difference between the image components is large, the entanglement of the white component was insufficient, and the bulkiness was insufficient. As a method to solve this problem, a 4H method has been proposed in which white components are entangled with each other by interlacing. However, when applying interlace during winding, the winding speed is 3500 m/M or more, so sufficient interlacing cannot be achieved. When interlace is applied to yarn, it is not suitable in terms of quality because dyeing odor "t!":T occurs due to interlacing irregularities, and also from the point of view of the cost of interlacing as the t:l manufacturing process increases. Thus, the degree of mixing between the components can be further improved just by spinning and winding.It was hoped that a technology for manufacturing a mixed yarn with a higher bulkiness could be established.Therefore, the present invention As a result of intensive study on this point, the present invention has been completed.That is, the gist of the present invention is that a large denier filament group and a fine denier filament group have the same base, end, and Dispersed Owabimapuko is spun into a well-mixed arrangement by packing in a concentric circle, and at that time, no

[3] The spinning draft of the large diameter filament group is set to 350 or more, and the spinning draft is set to 350 or more. According to the invention of A1, it is possible to obtain a blended uI yarn with a sufficiently large shrinkage difference between the thick denier component and the fine denier component, and the blending of both components is extremely good, so it does not feel bulky compared to conventional blended yarns. The one that has been changed to a large cloth. Furthermore, as mentioned above, there is very little adhesion and yarn breakage during spinning, so the productivity is extremely high. In addition, since the present invention can be rolled up at high speed, it has excellent strength and elongation, which is essential (
7. It is not necessary to stretch the yarn as much as in the second drawing.
1 t It is also possible to use it for ships II. As described above, according to the method of the present invention, the mixing of the thick denier component and the fine denier component is greatly improved compared to the conventional mixed yarn, and the bulky textured mixed yarn can be produced without problems during spinning. It is a product that can be manufactured using a warm yarn that can be used for knitting fabrics using just the spinner's culm, and its industrial significance is extremely large. The present invention will be explained in more detail. In the present invention, the target polyester is one in which 85 moles or more of the repeating unit is essentially composed of ethylenetete and phthalate, and is copolymerized with additives for purposes such as matting, improving dyeability, and preventing static electricity. It may be included as a combination or blend. The intrinsic viscosity of the polyester represented by polyethylene terephthalate (measured in ochlorophenol at 35°C) is preferably from 0.45 to 1.20, particularly from 0.50 to
, oO is preferable. When the intrinsic viscosity is less than 0.45, the strength level of the resulting clamping frame is undesirably low. Also, the authority viscosity is 1.20, which is 11. ! i i;i:
, spinning■JF melt piece 11 viscosity is too high, melt β・]1
4X that increases the 1st degree of fortune is inevitable, so IT dimension +,, <Shil'h. Also, when spinning from the same spindle, 1tII
t, P k1 denier is daytime 2nd group J: The top of J is 4. in Figure 1 (A). if (, and X lclFigure 1 (b)
It is necessary to spin the spinner into a shape of 9JJ with a rotational circular arrangement. This is the thick denier component and the rule of seven denier component γ[! ,
Well, the change of Palau 118 (-L4 is Okio. In addition, in Figure 1, 1, 2.3 are 4'+ of the caliber of each other.
1i polymer discharge hole, 1.2°3 Ill:
'i 111 The thickness of the filament ejected increases, +) rf, +d at 4, the thickest filament y113
is referred to as the person “Funir!1゛ [“′]. Here, the large denier component to be spun is 4. Qde or more, I
It is preferable that the till denier component d is 3.5 dL1 or less,
stomach. In other words, the fiber denier of the thick denier component is 4, Od
When reading e red, there is no waist of the woven or knitted article, - fine denier p + 7. Medium fiber denier exceeds 3.5 7,117
1+-1, #”, 11 tVll Product ki phase l 1
I got into a situation where I had a bad experience with LCL. 2. When spinning these components, the spinning draft of the dog denier component in the row is at least 350, ult, <kl: 4.
It is necessary to do no nigt'ej. 1 strain (4i
The denier of the large denier component is 5de.
, the yarn is 11 denier, the fiber denier is 2 de, the difference in denier is very large, 111 denier, 111 denier,
This is because when the spinning draft is less than 350, breakage of yarns in close contact between image components occurs frequently. Or〈1. In the mixed yarn obtained by the method, it is preferable that the difference in flood shrinkage rate between the dog denier component and the F't'l denier component is 5- or more. When this difference in shrinkage rate is 5 width less than lj;,''i (the shrinkage rate = 5P), the woven or knitted article will no longer develop a bulge. 1 for this invention? Therefore, winding speed 1'1' is critical, and 3
(1 (range of 10 to 5000 kI/training, bryoyl-7
<, 13,500~45 D Om/'' Speedmaster,
Adopted in the surrounding area. The winding speed is 3oooy+t/Jewei $lj 6') Yanghe,
If the mixed fiber yarn subjected to mechanical compression is concave, it cannot be sharpened, and on the other hand, the yield rate is 5000? When /'+++iR is exceeded, both the large denier component and the circular denier component undergo oriented crystallization +Z, so the shrinkage difference between the dog denier (1 minute) and the !III denier component becomes extremely small.Ha1 , 2, in the present invention, it is possible to stably produce a preferable differential shrinkage mixed fiber yarn under high-speed spinning without the need to apply inter-17-thickness means. can be built,
That's the thread I took from the camellia! It has the advantage that it can be used as a pure substance. In addition, the mechanical properties of wood and 1. strength and elongation. - means the next yield r1 Yuka, and also indicates the difference in shrinkage rate and convergence difference note t↓, boiling water shrinkage rate and cold water shrinkage rate of dog denier component and fine denier component 1. ,l! Measurement 1-1 was carried out using the method below. (B) ・ν1 degree was measured using a constant speed extension type tensile tester with an initial load of 1/30 S'/d, sample length of 100 pieces, and 20
The breaking strength obtained under the conditions of elongation rate 2 (10 gates/gas) in an atmosphere of ℃, 65 cm R, H is νi11 in the denier of the sample.
(b) Elongation and stroke 1, showing the elongation at break under the above conditions, (
c) The primary yield stress is the value obtained by dividing the initial yield strength of the strength-elongation bend (stress-strain profile) recorded at the time of strength-elongation measurement by the denier of the p-thorn. 2) Various types of fresh water harvesting λ rate of 11 denier were obtained and separately spun at various spinning speeds. As a trial bite,
Under a load of 1/30 fAe? ll1l Fixed length! In the blind test, the material was left unloaded for 30 minutes in the Fossho water, then placed in room 111 for 2 hours, and then placed again at 1/30.
The length t2 of the sample converted to ψ by applying a load of V/de is calculated using the following formula. No! On the other hand, the spinning draft was determined from the ratio of the 4-rolling speed and the 111-rolling speed according to a conventional method. In addition, for the texture, we knit the 1-way yarn in a tube, and the texture is 714 minutes.
1. Color the frame in the usual way using dye and dry with water at 1VtP.
A sample for texture was prepared by heating at 180° C. for 1 minute. Texture t, meat 1; Waist, fullness, touch, etc. were evaluated based on exposure and touch. Next, the present invention will be explained from the ￥ state side. Example 1 Polyethylene 1/n terephthalate (containing TlO2 as an quenching agent) having an intrinsic viscosity of 0.64 was dissolved in R11L, Figure 1-(
It was extruded from gold [] having a spout 9 and a concentric discharge hole 1 cedar shape. The cap is composed of three rows with different hole diameters, j+ and (L.The innermost F6 has a hole diameter of 0.55 mm and a land length of 1.10 mm, and has 6 holes. 12 between 0.45 mm and land length 0.80
It consists of 18 holes with the outermost hole having a diameter of 44.0.40' mm and a land length of 0.80 mm. The thread consisting of 36 filaments discharged from the spinneret was placed at a length of 8 m located 40 m below the surface of the spinneret.
With a 0crn side-blown spinning tube? Reihe solidification L7, oiling roller? ll! Qi 1j all 1j 1 force and roll 10
One piece of fiber of 0 de/36 r+z was taken. Incidentally, during winding, the spinning speed was variously changed. The thread truts for each sentence during spinning are as shown in Table - ■, and the ? of each component? Table 1 shows the Ie water unilateral bending rate, the difference in shrinkage rate between thick denier and thin denier, and mechanical properties. Cloth-I Shrinkage rate In the above example, the maximum Kishi fiber deninyl is 5.0 + l.
e. Although the smallest one is 1.9 de, which is a very large difference in denier, the spinning draft of the thick denier component is extremely large, so there is almost no yarn fluctuation of the thick denier component, and there is little adhesion fuzz. There were also fewer thread breaks. Samples A1 to A5 were knitted in a tube and dyed with a disperse dye. The staining conditions in this case are as follows. [Dyeing conditions] ■Dye: Polyogter Eastmnr Bl
ue ■ Dye ratio: 4% for the amount of tube knitting 11 ■ Auxiliary agent: Monogen (0.5 t/l,) ■ Bath ratio: 1/100 ■) Temperature x time: 100°C x 60 minutes dyed sample After washing with water and making it into a soft tube, it was set at 180°C for 1 minute and used as a sample for texture evaluation. The above samples were comprehensively evaluated from both mechanical and texture aspects. The results are shown in Table-11. Table -■ The evaluation of each item is based on the following criteria. 0 Mechanical properties ◎: Elongation is 65% or more, primary yield stress is 1, o s
y/d or more ○: Elongation is 85-66%, primary yield stress is 0.8 5
~1.0 4? /'de△: Elongation is 100-67
, primary yield stress is 0.70 to 0.84 r/de
: Contraction difference is 15% 1'J, vomiting, vomiting, and a sufficiently large nokulky feeling. (T: The difference in shrinkage is 10 to 14%, and the fugu taste and nokuru feeling are also relatively large. ・H: The difference in shrinkage is 5 to 9 inches, and there is some fugu flavor. N (: The difference in shrinkage is 5 There is no fullness, no lumpy feeling at all. 0. Evaluation was made by comprehensively considering the mechanical properties and texture. In this way, the difference in shrinkage between the thick denier component and the fine denier component is 5%. As described above, when the thick denier component and the thick denier are arranged concentrically, the blended yarn with a large bulky feel is produced, especially at a spinning speed of 4300 to 4700 m/
In the immediate area, the shrinkage difference was 10 inches or more, the bulky feeling was large, and the mechanical properties were also excellent, as it did not require a stretching process. State side 2 A round hole with the same hole diameter and land corner as in Example 1, and a dog denier component discharge hole and a fine denier component discharge hole as shown in Fig. 1-
Using a spinneret having the arrangement shown in (a), the spinning speed was set to 450 nFM/lrim in the same manner as in Example 1.
A mixed fiber yarn of 100 de/36 fi1 was obtained. The arrangement of round holes with different hole diameters and land lengths used and the spinning draft are shown in Table IVK. Table - TV In this example, a mixed fiber yarn in which the thick denier component and the fine denier component were more dispersed was obtained, but the yarn did not break during spinning, and a table was formed when the yarn was wound. This yarn was tube-knitted and dyed in steps 1-2 in the same manner as in Example 11. After drying, the texture was evaluated to 87, but a bulge and bulky feel were obtained as in Example 1 with a spinning speed of 4,500 ml/min. Comparative Example 1 As shown in Figure 11-()), the hole diameter is 0.20 and the land length is 0.
．． 40 rm+, 32 round holes and hole diameter 0.3
0mm. Land section (1.60mm, 16-pole round hole split-type spinner is used), spinning speed is 4500.
m/'' to obtain a yarn of 144 de/48 fi1.
It is a mixed system consisting of Ode there were. This mixed fiber yarn was evaluated in the same manner as in Example 1 for tube rubbing, dyeing, dryness, lingering nails, and abrasion.
Compared to Yanpur, its bulkiness was inferior to Osho. Comparative Example 2 The gold hole diameter, land length, and pole Kt iql were all the same as Comparative Example 1, but a spinneret was used in which the discharge holes for the thick denier component and the fine denier component were arranged in a dispersed manner. , spinning speed 4500 m, /””te, 144de /
48 fil of yarn was spun. At this time a;
- The structure and spinning draft were as follows. In this case, the yarn breakage force frequently occurs during spinning, and the purpose is not met.
2゜Ode~5. (The extraction number of lde was impossible.)
I used a mixed thread composed of da, but the large denier component was too thin so it didn't feel bulky, and the only thing I could get was a cylindrical glazed kite match without moon 8. Comparative Example 3 Burning Example 11 I also used Mjj thread L1 gold, and I
As in Example 16 J, change the discharge amount to 200 de
/3 fi fil fibers at a spinning speed of 4500 m/711
I flipped it up. The obtained first number/yoft ψ yarn tenier is T
It was a mixed yarn of O, ode ~ 6.2rle-・3]de, but it was 1 denier! , ν was too large, so the texture of the tube knit was rough and hard. Comparative Example 4 A yarn of 100 do/36 fil was obtained by winding the yarn at a spinning speed of 3,300 m in the same manner as in 1 on the New State side. However, this fiber F k ↓, elongation 120, beak 1 strength 2.0
97's heptagonal mechanical properties were low, and it was impossible for the ψ river to reach that level.

[Brief explanation of drawings]

The first one shows the sunset of one person at old vents with different diameters.
Eyes, 4 concentric circles: Arrangement type base, ← Uke, split arrangement type 1
” This is a top view of gold. In the figure 1.2...Thin Denica/component discharge hole 3...
...111 holes of large denier component"";,;',-7

Claims (3)

[Claims] (1) When melting the polyester green polymer and spinning it into two or more groups of filament yarns with different single fiber deniers from a spinneret, the thick denier group and the fine denier group are dispersed and/or arranged in a concentric circle shape. 1. A method for producing a polyester blend yarn, which comprises spinning a thick denier yarn at a spinning draft of at least 350 and winding it at a spinning speed of 3,500 to 5,000 m/-. (2) In the two groups of filament yarns with different single fiber deniers, the single fiber denier of the one with the opening is 3.5 or less, and the single fiber denier of the thicker one is 4.0 or more. (+1 Method for manufacturing polyester blend yarn described above. (3) The method for producing a polyester blend yarn according to claim (1), wherein the difference in flood shrinkage rate between the rolled-up thick denier component and fine denier component is 5 inches or more.