JPH0696812B2 - Intermingled yarn manufacturing method - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method for producing an intermingled yarn.
More specifically, suitable as a pile material for carpet,
The present invention relates to a method for producing a polychromatic bulky entangled crimped yarn.

In recent years, intermingled yarns have been required for anti-dying carpets and dying carpets. The intermingled yarn is a yarn obtained by mixing and interlacing two or more types of yarns having different dyeing performance or two or more types of yarns that have been dyed with a pressurized fluid. When this yarn is used as a pile yarn for carpet, while the conventional twisted yarn has a tweed-like point contrast color tone,
Her) is a completely different point in that it has a random contrast color tone. Since intermingled yarn can be manufactured by fluid treatment, it has the advantage of high productivity over the twisted yarn method, and it is considered that demand will increase further in the future.

(Prior Art) Several proposals have been made as methods for producing such intermingled yarns.

The most common method is to mix and entangle two or more types of bulky crimped yarns having different dyeing performance with a pressurized fluid,
For example, a device called CAP manufactured by Sherwood Co. of the United States is commercially available.

In the case of this method, it is necessary to mix and entangle bulky crimped yarns with each other, and the mixing and entanglement are simultaneously performed by an interlacer using a fluid, and entanglement is performed to satisfy post-process performance such as tuft performance. When setting the level, since the mixed fiber level is almost uniquely determined, the design effect of the obtained intermingled yarn is also almost uniquely determined. Energy is required and the cost is high, so there is a drawback that only a loose mixed fiber level can be obtained.

Further, for example, Japanese Examined Patent Publication No. 58-37403 discloses a method and apparatus for continuously producing a multicolored composite bulky yarn. In this case, spinning-drawing-processing, further fiber mixing and entanglement can be performed at one time, which is extremely economical. However, in this case as well, it has been suggested to use intermingled after bulking to obtain a yarn having a relatively low contrast with improved fiber mixing property.
A large amount of energy is required, and even in this case, it is difficult to freely control the mixed fiber level, and only a relatively loose mixed fiber level can be obtained.

On the other hand, Japanese Patent Publication Nos. 48-3344, 48-3873 and 49
No. 12132 and the like propose a method for producing a yarn having a multitone or multicolor effect. These proposals relate to a method of supplying two or more kinds of multifilaments to a heating turbulent or laminar flow nozzle to obtain a yarn having a multitone or multicolor effect. In these methods, two or more kinds of multifilaments are used. The multifilaments have different cross-sectional shapes, and unless they are twisted by twisting, the fiber mixing level becomes too high, and the product carpet has a drawback that almost no contrast can be obtained.

(Problems to be Solved by the Invention) As a result of intensive studies on a novel method for producing an intermingled yarn, the present inventor has solved the drawbacks of the conventional techniques, and as a result, has developed a non-swirl injection nozzle together with a heating compressible fluid. It has been found that the mixed fiber level of the resulting crimped yarn can be controlled very easily by imparting the focusing property to the two or more types of yarns to be supplied, individually or after aligning them, with a pressurized fluid. The present invention has been reached.

That is, an object of the present invention is to provide a method for producing an intermingled yarn having a wide range of mixed fiber levels economically and without adding extra constraint to the yarn to be used.

(Means for Solving the Problems) In order to achieve the above-mentioned object of the present invention, the present invention relates to the above-mentioned thermoplastic synthetic fiber when crimping the thermoplastic synthetic fiber together with a heat-compressible fluid through an injection nozzle. As a single yarn having a denier of 10 to 17 and a yarn having a denier of 1350 to 2030, two or more types of undrawn yarns having different dyeing performance or two or more types of colored undrawn yarns are drawn at the same time. Then, after aligning individually or simultaneously, the focusing property is imparted by the heating and pressurizing fluid through the focusing property imparting device, and then the crimping process is performed together with the heating compressive fluid through the non-swirl jet nozzle. Then, there is provided a method for producing an intermingled yarn for carpet, which is characterized in that a entanglement treatment is performed with a pressurized fluid through an interlacer.

In the present invention, when the undrawn yarn is two or more kinds of undrawn yarns selected from polyamide polymers having different amino terminal groups and polyamide polymers containing a cationic dyeing agent, the pile yarn for carpet is particularly preferable. It is particularly suitable in terms of performance such as durability, elastic recovery, abrasion resistance, and post-processing that allows re-dyeing. The undrawn yarn may be one immediately after being spun, or may be separately wound.

In the present invention, as the crimping processing apparatus, a jet collision processing apparatus using a heat-compressible fluid, which has been proposed many times, can be conveniently used. In this case, since the processing device usually includes a drawn-processed portion, it is more cost effective to supply the undrawn yarn than the separately drawn yarn.

In the present invention, the pressurized fluid for imparting the converging property to the yarn before being passed through the non-swirling jet nozzle is the yarn when the crimping process is subsequently performed through the non-swirling jet nozzle by the heat-compressible fluid. In order not to reduce the crimping performance imparted to the yarn, it is preferable that the pressurized fluid is heated so as not to lower the temperature of the yarn before entering the non-swirling jet nozzle.

The manufacturing method of the present invention will be described with reference to the drawings.

The types of different dyeing performance yarns that are mixed into practical intermingled yarns are generally in the range of 2 to 3, so an example of manufacturing an intermingled yarn consisting of 3 types of different dyeing performance yarns will be described. Describe.

FIG. 1 shows a systematic diagram of an example of an intermingled yarn manufacturing apparatus according to the present invention.

First, undrawn yarns 1, 2, and 3 having different dyeing performances are prepared by an ordinary spinning machine for polyamide fibers.

These three types of undrawn yarns are passed through the yarn running guides 4 and 5 and subjected to thermal drawing between the feed roll 6 and the draw roll 7 to draw at a desired draw ratio. Immediately, the drawn yarns are individually or simultaneously passed through the focusing device 8 using the pressurized fluid to impart a predetermined focusing property, and then the bulky crimping is continuously performed through the jet nozzle 9 using the hot compressive fluid. Then, the roll 10 for fixing the crimp, the cooling nozzle 11, the aligning roll 12, the take-up roll 13, and the interlacer 14 for forming one yarn are wound on the winder 15.

The undrawn yarn is one that is dyed with a different hue when dyed after being commercialized as a bulky crimped yarn and further woven into a carpet or the like.
What causes such differences in dyeability is that the number of dyeing seats is the same between polymers of the same type, the type of dyeing seat is the same, the type of polymer is the same (for example, nylon 66 and 6), and the same type of polymer. There are different sizes of fineness. In addition, it is also possible to use a yarn which is already colored at the time of manufacturing the undrawn yarn.

The focusing device 8 has a general interlacer structure, and can use heated air or steam. Depending on the pressure used, the degree of bundling property imparted to the stretched yarn is different, and conditionally a pressure of 0.1 to 4.0 kg / cm ² G, preferably 0.2 to 3.0 kg / cm ² G is suitable. Is. If it is 0.2 kg / cm ² G or less, it will be difficult to impart the bundling property to the drawn yarn, and the intermingled yarn obtained will have a high degree of fiber mixture and the carpet color tone will have low contrast. . When it is 3.0 kg / cm ² G or more, the bunching property given to the yarn after drawing becomes large, and when performing bulky crimping through a jet nozzle with a heat-compressible fluid, opening of each filament becomes insufficient. ,
An intermingled yarn with low crimping performance.

The temperature is preferably in the range of 30 to 350 ° C, preferably 40 to 300 ° C. If the temperature is 40 ° C or lower, the temperature of the yarn heated by the draw roll will be lowered, and the intermingling with low crimping performance due to insufficient preheating during bulky crimping will be performed through the injection nozzle of the heat-compressible fluid. It becomes rud thread. Above 300 ° C, the toughness of the intermingled yarn obtained by overheating will be reduced.

The non-swirl jet nozzle 9 is of a liquid jet type. Crimp fixing device 10, cooling nozzle 11, aligning roll 12, take-up roll 13, interlacer 14,
The winder 15 is known.

(Example) Hereinafter, the Example of this invention is shown.

Example 1 Nylon 66 intermingled yarn was manufactured as follows using the apparatus shown in FIG.

Two types of undrawn yarns with amino end groups dyed with acid dyes (dyeing in dark and light due to different numbers of end groups) and sulfonic acid groups dyed with cationic dyes A total of three undrawn yarns (2300d / 40f each) of one kind of undrawn yarn were heated simultaneously to 80 ° C, the peripheral speed of the feed roll was 470m / min, and the peripheral speed of the draw roll, which was heated to 210 ° C, was 1600m / min. After continuously drawing at an apparent draw ratio of 3.4 times, the sizing property is imparted by a sizing property imparting device that uses air at a temperature of 200 ° C. and a pressure of 2.0 kg / cm ² G, and wound with a jet nozzle that uses heated compressed steam. After shrinking and taking it off at a peripheral speed of 1250 m / min with a take-up roll, interlacing 28 pieces / m with an interlacer and winding it with a winding machine, finally obtaining 2400d / 120f intermingled yarn It was

Align the obtained intermingled yarns and gage 1 /
Weaving with a tuft machine under the conditions of 10 inches, 12 stitches / inch, pile height 4.0 m / m to obtain tufted carpet, which is acid dye (NYLOSANBLUE, EGL 0.34% owf) basic dye (ASTRAZONBLUE5GL 0.07% owf, YELLOW7GLL0.28
% Owf, REDRL 0.12% owf) to give a blue / orange heather carpet. The color tone of the obtained carpet is independent of the dark blue color, light color, and orange color, and has a high contrast. It is proved that the mixed fiber ratio of the three types of dyed yarns was controlled low. The muscle quality was good.

Example 2 Using the apparatus shown in FIG. 1, nylon 66 was used as follows.
Intermingled yarn was produced.

The three kinds of undrawn yarns of Example 1 were continuously drawn at a peripheral speed of 470 m / min for a feed roll heated to 80 ° C., a peripheral speed of 1600 m / min for a draw roll heated to 210 ° C., and an apparent draw ratio of 3.4 times. After that, the entanglement treatment device using air at 50 ° C. and 0.3 kg / cm ² G imparts the converging property, crimps it with a jet nozzle using heated compressed steam, and rotates it with a take-up roll at 1250 m / min. After the yarn was taken up at a high speed, the interlacer was entangled at 28 yarns / m and wound by a winder to finally obtain an intermingled yarn of 2400d / 120f. This was made into a tufted carpet in the same manner as in Example 1 and subjected to anti-dyeing to obtain a blue / orange heathered carpet. The color tone of the obtained carpet was such that there were few parts in which the dark blue color, the light color of blue, and the orange color were independent, and the color contrast was low, and the mixing ratio of the three types of different dyed yarns was controlled to be high. Proof that
The meridian quality was also good.

Example 3 Using the apparatus shown in FIG. 1, nylon 66 was used as follows.
Intermingled yarn was produced.

Two types of red and blue undrawn yarns (2300d / 68f each) colored with a pigment were treated under the same conditions as in Example 1 to finally obtain 1600d / 136f intermingled yarns.
Align the obtained intermingled yarns and gage 1 /
A tufted carpet was obtained by weaving with a tuft machine under the conditions of 10 inches, 15 stitches / inch, and pile height of 5 m / m. The color tone of the obtained carpet was independent of blue and red, and had a high contrast, demonstrating that the mixed fiber ratio of the two types of spun-dyed yarns was controlled to be low. The muscle quality was also good.

(Effects of the Invention) According to the present invention, by imparting an appropriate focusing property to a stretched yarn before bulky processing with a pressurized fluid, the degree of mixed filament of the dyeing performance yarn can be freely controlled, In addition, it becomes possible to obtain intermingled yarns that are stable in terms of quality, and it becomes possible to supply products that meet the needs of consumers.

Further, the degree of fineness of the intermingled yarn produced by the present invention is substantially determined by the converging property imparting treatment before applying the bulky pressure. By efficiently utilizing the fiber-spreading effect inside, it becomes possible to lower the pressure of the compressed air used in the entangling process step by the interlacer for making one yarn thereafter. It is possible to more efficiently produce the intermingled yarn in terms of productivity and energy cost as compared with the method of producing the intermingled yarn by subjecting the bulky crimped yarn to the entanglement treatment in a separate step. .

In addition, the method for producing an intermingled yarn according to the present invention can of course produce a monochromatic bulky yarn, if necessary.

[Brief description of drawings]

FIG. 1 is a systematic diagram of an example of an intermingled yarn manufacturing apparatus according to the present invention, in which 1, 2, 3 are undrawn yarns having different dyeing performance, 4, 5 are yarn running guides, 6 is a feed roll, Reference numeral 7 is a draw roll, 8 is a focusing device, 9 is a non-swirl injection nozzle, 10 is a roll, 11 is a nozzle, 12 is a aligning roll, 13 is a take-up roll, 14 is an interlacer, and 15 is a winder.

Claims (1)

[Claims] 1. When a thermoplastic synthetic fiber is crimped together with a heat-compressible fluid through an injection nozzle, the thermoplastic synthetic fiber has two or more types of undrawn yarns having different dyeing performance, or two or more types of colored fibers. Using unstretched yarn, the above yarns are simultaneously stretched to produce a single yarn with a denier of 10 to 17
After making 2030 denier yarns, they are aligned individually or simultaneously, and then focused by a heated and pressurized fluid through a focusing device, and then wound through a non-swirl jet nozzle together with a heated compressive fluid. Subjected to shrinkage,
Next, a method for producing an intermingled yarn for carpet, which comprises subjecting these to an interlacer with a pressurized fluid so as to form one yarn.