JPS62110936A - Level dyeable composite processed yarn and its production - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention is a level-dyed composite processed yarn that has a spun-like appearance and texture, and is free from irritation when made into a fabric (and has excellent post-processability). and its manufacturing method.

(Prior art) Conventionally, when two types of filament yarns with different elongations are drawn together and fed by a supply roller for false twisting, the yarn with lower elongation is difficult to stretch, so the core of the yarn is It is well known that yarns with high elongation are easily stretched, so they are twisted so as to surround the outer layer of the yarn.

However, undrawn yarn with different elongation and highly oriented undrawn yarn (P
OY) is processed at the same stretching ratio, and highly oriented unstretched (
POY) is dyed in a light color, and the undrawn yarn is dyed in a dark color because the magnification is lower than that normally used, and when it is made into a fabric, it has the disadvantage of noticeable unevenness in shading.

(Problems that the Invention Attempts to Solve by IW) The present invention attempts to solve the problem that conventional composite textured yarns exhibit noticeable unevenness in shading when made into fabrics.

(Means for Solving the Problems) Therefore, the present invention provides X
Metakaolin made amorphous by line diffraction is 0.1 to 5.
It is composed of a low elongation filament made of polyethylene terephthalate mixed with Qw t% and a high elongation filament made of ordinary polyethylene terephthalate, and the waveform and phase of the filament ridges are randomly maintained in the longitudinal direction of the yarn, and the same type and different types are used. It has an integral assembly structure consisting of a mixed and entangled part between elongation filaments and a part where both filament groups each consisting of the same kind of elongation filament intersect with each other and are arranged side-by-side with their orientation reversed, and a level-dyed composite processed yarn which locally contains a convergent structure in which the waveforms and phases of filament ridge lines are approximated and aggregated between the integral aggregation structures, and is made of two types of filament yarns with different elongations. Using melt-spun undrawn yarn of polyethylene terephthalate on the high elongation yarn side, kaolin or metakaolin made amorphous by X-ray diffraction by firing kaolin on the low elongation yarn side. Polyester fibers made of polyethylene terephthalate polymer blended with Qw L%, and highly oriented undrawn yarns with a birefringence of 30 x 10-' or more, are fluid-mixed and entangled, then simultaneously stretched and false-twisted through a silent guide. In doing so, it is obtained by simultaneous stretching processing with the feeding speed of low elongation yarn being Vl and the feeding speed of high elongation yarn being Vh, 0.90≦V h /V l≦1.02, This is a means to solve problems.

(Function) The present invention separately supplies high elongation yarns and low elongation yarns in an amount that is at least equal to or more than the amount of high elongation yarns, and then in the false twisting area. The yarns are twisted in such a way that the yarns are arranged at the time of doubling, that is, the low elongation yarn is wrapped around the high elongation yarn during retrospective combustion. By performing the reverse coordination process, a level dyeing composite processing is obtained.

(Example) An example of the present invention will be described below with reference to the drawings. Fig. 1 shows a manufacturing apparatus of one example of the present invention.

Now, the level-dyed composite processed yarn of the present invention uses an undrawn yarn melt spun with polyethylene terephthalate on the high elongation yarn side, and kaolin on the low elongation yarn side. Alternatively, metakaolin, which is made amorphous by X-ray diffraction by firing kaolin, is 0.1 to 5. A polyester fiber composed of polyethylene terephthalate polymer containing Qw t% and a highly oriented undrawn yarn with a birefringence of 30 x 10-' or more was used, and after fluid mixing and entanglement, it was simultaneously stretched and temporarily stretched through a restraining guide. When twisting, when the supply speed of low elongation yarn is Vl and the supply speed of high elongation yarn is Vh, set 0.90; v h /V i ≦1.02, and perform simultaneous stretching and false twisting. It is composed of filaments with low elongation and filaments with high elongation, and has a random crimp waveform and phase in the longitudinal direction of the yarn, and a part where filaments of the same type and different types of elongation are mixed and intertwined. Both filament groups consisting of filaments of the same kind of elongation intersect with each other and have an integral assembly structure consisting of portions arranged side-by-side with the weave orientation reversed, and the filaments are crimped between the integral assembly structure. It locally includes a focusing structure in which the waveforms and phases of the two are approximated and aggregated.

In other words, when polyester fibers containing kaolin or metakaolin are used on the low elongation side, kaolin or metakaolin has a refractive index close to that of polyester polymers, so it exhibits a calm luster, and the polyester fibers can pass through the fibers. It exhibits a deep color because it is captured at the interface between the polymer and kaolin fine particles and within the kaolin particles.

By combining low elongation yarn and high elongation yarn capable of deep dyeing in this manner, a spunlike-like processed yarn with level dyeing property can be obtained by the manufacturing method described above.

The amount of kaolin to be blended is generally 0.1 wt% to 5 wt%, preferably 0.1 wt% to the polyester polymer.
5wt%~2. Ow L%.

If it is less than 0.1 wt%, the effect of deep dyeing will be small, and if compound processing is performed, the dyeing property will not be improved and irritation will be noticeable, and if it is more than 5 wt%, the spinning property will be poor due to guide resistance, etc. There are two methods of compounding: adding it to the reaction system before or during polymerization of the polyester polymer, and adding it after polymerization, but from the viewpoint of uniform dispersion into the polymer, it is preferable to add it before or during polymerization. In this case, it is of course possible to use a dispersant together if necessary to prevent particle agglomeration.Specifically, the polyester polymer blended with kaolin or metakaolin used in the present invention is as follows. Manufactured in

That is, in the direct polymerization method, terephthalic acid and ethylene glycol were charged into a polymerization vessel in a molar ratio of 1:2, and at the same time, antimony trioxide was added as a catalyst in a molar ratio of o, oos% to terephthalic acid. and this mixture is 4.0
Produces under atmospheric pressure. While discharging water from the system, the final temperature is controlled at 240°C and the reaction is allowed to proceed. When water is no longer generated, transfer to an autoclave and gradually add an ethylene glycol slurry in which 20% by weight of metakaolin is dispersed under stirring, so that the amount of metakaolin is 1% by weight relative to the final polyethylene tereclate. .5
Adjust so that it is %. While further stirring, the internal pressure of the autoclave is gradually reduced to Q, 1 msHg, ethylene glycol vapor is continuously removed from the system, and the final temperature is set at 280°C. And this mixture has an intrinsic viscosity of 0.6
After polymerizing to a size of 4, it is extruded into water, cooled, and cut to obtain chips.

The polymer chips obtained in this manner are vacuum-dried, supplied to a screw extruder, and melt-spun. During melt-spinning, the birefringence is 30X10-' or more, preferably 40
Spinning is performed at a spinning speed of X 10-' or more. This highly oriented undrawn yarn is used as a low elongation yarn, and the elongation difference is 100%.
The above-mentioned composite processing is obtained using the high elongation yarn obtained by the above-mentioned conventional spinning.

The manufacturing apparatus shown in FIG. 1 will be explained below. 1 is a package of high elongation yarn, 2 is a pancage of low elongation yarn containing kaolin, a first supply roller 3 and a second supply roller 4.
Each is supplied by At this time, the supply speed of the first supply roller 3 is Vh, the supply speed of the second supply roller 4 is Vjl, and V
h/ve≦1.02. Subsequently, both yarns are fed via a fluid mixing and entangling device 5 and a twisting guide 6 to a false twisting area. Also, 7 is a guide, 8 is a heater, 9 is a temporary punishment device, 1
0 is the first delivery roller, 11 is the second delivery roller,
12 indicates a rolled-up composite processed yarn.

In addition, if V h / V Il > 1.02, the high elongation yarn will wrap around the low elongation yarn, and the resulting processed yarn will be in a nebulous shape, causing trouble in the passability in the subsequent process. However, if the value is set to 1.05 or higher, walnuts in the yarn tend to occur when it exits the first supply roller (more yarn breakage occurs.Even if Vh/Vj!≦1.02, if it is too small, the layers will be reversed. Preferably 1.00≧V, since coordination does not occur and the desired composite textured yarn cannot be obtained, and if it is less than 0.85, yarn breakage will still occur on the exit side of the second supply roller.
Excellent processed yarn can be obtained within the range of h/Vl≧0.85.

The yarn obtained by this method has an aggregate structure in which low elongation filaments and high elongation filaments have randomly crimped waveforms and phases, are intertwined with each other as the same type or different types, and are integrally mixed and intertwined. It is a composite textured yarn in which a group of low elongation filaments has an inverted structure with a side-by-side arrangement, and partially has a convergence structure where the waveforms and phases of the crimp are locally approximated.

The fluid mixing/fiber-entangling device 5 is extremely important for interlacing, mixing, and reversing filaments of the same type and different elongation and both groups of filaments, and a commonly used interlace device, taslan device, etc. can be used. However, since the false twisting and retrospective twisting of the false twisting machine also extends into the device 5 via the guide 7, in order to maximize the effects of entangling and mixing the filament groups and reversing the path, it is necessary to twist the false twisting immediately after the device 5. It is essential to provide a pull-out guide, and as an effect of this, it is necessary to minimize retroactive twist. However, there is a slight difference in effectiveness between using an interlacing device and a Taslan device for the fiber entangling device 5. In the former case, the effect of stopping retrotwisting can be achieved even if it is small, but in the latter case, In some cases, it is necessary to securely stop twisting to the extent that retroactive twisting has almost no effect. Note that the twist stopper guide 6 is not particularly limited in its specifications, but generally it is 1 to 1.
Good results can be obtained with a 3-point pin guide. Although a spindle type may be used as the temporary twisting device 9, a circumferential friction type false twisting device is preferable in order to improve operability and the ability to bundle the composite plate twisted yarn.

In addition, FIG. 2A is a structural diagram including a convergence structure portion in which the crimp waveform phase is locally approximated and focused, and FIG. 2B is a general structural diagram other than that.

Hereinafter, the present invention will be explained in detail with reference to the following specific first and second embodiments.

[First Example] Using polyester filament B (125De/36Ftl) obtained by spinning at 1600 m/min as a high elongation yarn, X-ray diffraction amorphous with fired kaolin on the low elongation yarn side, and metakaolin Filament A (115De/36Fil) was used, which was obtained by melt-spinning a polyester polymer consisting essentially of repeating ethylene terephthalate units at 3,500 m/min and containing 1.5 wt% of ethylene terephthalate units.

The false twisting apparatus shown in FIG. 1 was used to carry out the combined simultaneous stretching and false combustion. In this case, the speed of the first delivery roller IO is 400 m/min, the temperature of the heater 8 is 180°C, the surface speed of the friction false twisting tool 9 is 740 m/min, and the fluid device air pressure is 3.0 kg.
/crm, and composite simultaneous stretching temporary combustion was carried out under the conditions of Vh/Vl of 0.95. The staining results at this time are shown in Table 1.

For dyeing, the yarn obtained by false twisting is made into a woven fabric, and Dia
nix Blue BG, F S (Mitsubishi Kasei)
using, dye concentration 4.0%, bath ratio 1:50, temperature 100
It was stained at ℃ for 60 minutes, and the irritation on the dyed fabric was visually judged. Further, as a comparative example, a low elongation yarn made of normal polyester fibers containing no metakaolin spun at 3500 m/min was evaluated in the same manner as described above and used as a control.

Table 1 [Second Example] A filament (125De/36Fil) obtained by spinning at 1600 m/min was used as a high elongation yarn, and kaolin was fired as a low elongation yarn to make it amorphous by X-ray diffraction. Metakaolin 1. A filament (1
00De/36Fil) was subjected to composite stretching preliminary combustion using the apparatus shown in FIG.

First delivery speed 200m/min, heater temperature 200℃,
Surface speed of friction false twisting tool 370 m/min, fluid device air pressure 2
．． Table 2 shows the results of conducting the test under the condition of 0 ksr/am and changing the overfeed of each supplied filament.

Table 2: When V h/V N exceeds 1.05, the yarn becomes nep-like and streak-like, and when it is below 0.80, it becomes a two-layer structure of core/sheath, and irritation becomes noticeable, resulting in 1. 02～
The structural thread of the present invention was obtained up to 0.85.

The woven texture is woven from yarn obtained by false twisting, Dianix Blue BG, F S
(Mitsubishi Kasei), dye concentration 4.0%, bath ratio 1:50
, shows a sensory test after dyeing at a temperature of 100° C. for 60 minutes, and the irritation was determined visually based on the degree of staining.

(Effects of the Invention) As detailed above, the composite textured yarn of the present invention is essentially different from the core-sheath structure as described in the prior art, and the filaments of both components are mixed and intertwined. The components are inverted while adopting side-by-side coordination, forming an integrated structure as shown in Fig. 2, which has excellent post-processing properties, and a convergence part (waveform phase) where the crimp waveform phase locally aggregates approximately. Figure 2 A) is very useful for improving post-processing properties.Because the low elongation yarn contains kaolin or metakaolin, the low elongation yarn exhibits a dark color, which covers the dyeing difference with the high elongation yarn. , Irritability with fabrics is improved. In addition, the mixing and entangling of each filament of both components and the reversal of both components are
This is produced as a result of the fluid mixing and entangling action and the coordination change of both components on the false twist heater.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing the running state of yarn in an apparatus for carrying out the method of the present invention, and FIG. 2 is a schematic diagram of the structure of a composite processed yarn obtained by the present invention. Explanation of the main parts of the figure ■... High elongation yarn package 2 - Low elongation yarn pancake 3 - First supply roller 4 - Second supply roller 5 - Fluid mixing and fiber entangling device 6 - Twist stopper Guide 8 - Heater 12 - Winding composite processed yarn

Claims (1)

[Scope of Claims] (1) A low elongation filament made of polyethylene terephthalate containing 0.1 to 5.0 wt% of kaolin or metakaolin made amorphous by X-ray diffraction by firing kaolin, and ordinary polyethylene. It is composed of high elongation filaments made of terephthalate, and has a random crimp waveform and phase in the longitudinal direction of the yarn, and a part where filaments of the same type and different types of elongation are mixed and intertwined, and each filament is made of the same type of elongation filament. It has an integral assembly structure consisting of portions arranged side-by-side with both filament groups intersecting with each other and their configurations being reversed, and the waveform and phase of the crimp of the filaments are similar between the integral assembly structure. A level-dyed composite processed yarn that locally contains a bundled structure. (2) Using two types of filament yarns with different elongations, the high elongation side is a melt-spun undrawn yarn of polyethylene terephthalate, and the low elongation side is kaolin or fired kaolin, and X-ray diffraction analysis is performed. Amorphous metakaolin from 0.1 to 5
．． A polyester fiber composed of polyethylene terephthalate polymer containing 0wt% and a birefringence of 3.
When using a highly oriented undrawn yarn with a diameter of 0x10^-^3 or more and simultaneously stretching and false twisting it through a twisting guide after fluid-mixing and entangling, set the supply speed of the low elongation yarn to Vl and the supply of the high elongation yarn. A method for producing a level-dyed composite textured yarn, characterized in that simultaneous stretching and false twisting is carried out at a speed of 0.90≦Vh/Vl≦1.02, where Vh is expressed as 0.90≦Vh/Vl≦1.02. (3) Level dyeing composite processing according to claim 2, wherein the ratio of the supply speed Vh of the high elongation yarn to the supply speed Vl of the low elongation yarn is 1.00≦Vh/Vl≦0.85. How to make yarn.