JPH0473224A - Production of electrically conductive multicolored bulky yarn - Google Patents

Abstract

PURPOSE:To obtain the subject bulky yarn free from separation of single filaments, having uniform distribution of single filament loops in longitudinal direction and suitable for carpet by aligning synthetic fibers having different dyeing property, subjecting to crimping, etc., and entangling with electrically conductive fiber. CONSTITUTION:Plural kinds of drawn synthetic nylon 6 fibers having different number of NH2 terminal groups and different dyeability are aligned, stretched at a stretching ratio of 2-12%, heated at 150-200 deg.C, crimped with steam of 200-260 deg.C, relaxed at an over-feed ratio of 40-100%, stretched again at a stretching ratio of 10-50% and blended with an electrically conductive fiber in an air-entagling treatment region at an over feed ratio of 1-5% to obtain the objective bulky yarn having a total denier of 2,000-5,000, a percentage crimp of 13-30% and an entanglement number of 30-50/m.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for producing conductive multicolor bulky yarn, and more particularly, to a method for producing conductive multicolor bulky yarn preferable for use in carpets. be.

[Prior Art] A conventionally known method for manufacturing multicolor bulky yarn is described, for example, in Japanese Patent Publication No. 58-37403. The special public official Showa 5
The method described in Publication No. 8-37403 involves separately melting two or more polymers with different colors or coloring properties, distributing and transporting each polymer to two or more spin blocks, and
For each spin block, a multifilament consisting of a group of single fibers made of two or more heterochromatic polymers is placed at a spinneret,
Subsequently, the polychromatic gold yarn is bulk-processed with or without stretching, entangled and rolled up, thereby continuously obtaining a bulk-processed polychromatic gold thread.

On the other hand, a carpet using bulky threads and conductive fibers is described, for example, in Japanese Utility Model Application Publication No. 48-38186.

In the carpet type described in the Japanese Utility Model Publication No. 48-38186, which is obtained by tufting pile yarns on a base fabric, the pile yarns constituting the carpet are composed of at least two types of yarns. Consisting of 1 of them
The seeds are conductive threads that form a loop pile.
Is the height of the pile equal to that of piles made of other yarns?
Or something lower than that.

"Problem to be Solved by the Invention J The multicolor bulky yarn obtained using the method described in the above-mentioned Japanese Patent Publication No. 58-37403 is assembled immediately after spinning single fibers made of a heterochromatic polymer, The assembled m-fibers are immediately drawn, then subjected to a bulking process and then rolled up. When the fibers of each type are not mixed evenly and are aggregated, and when woven into a carpet, only one of the aggregated threads is continuously exposed on the surface of the carpet, forming vertical stripes of the same color. In many cases, carpets with vertical stripes have the disadvantage that their commercial value is significantly impaired.

On the other hand, although the carpet described in the above-mentioned Japanese Utility Model Publication No. 48-381.86 has a conductive effect, the pile-forming fibers and the conductive fibers are separately fed when weaving the carpet. However, it is difficult to adjust the tension when each fiber is fed, and special equipment is required for weaving.

[Means for Solving the Problems] The structure of the present invention is to arrange a plurality of types of spun and drawn synthetic fibers with different dyeability, excluding conductive fibers, in a method for producing conductive multicolor bulky yarn, A first tensioning process is carried out at a stretch rate of 2 to 12% in which no stretching occurs in the first tensioning zone, and the process is subsequently guided to a preheated roller heated to 150 to 200°C. Perform preheating,
Next, the material is led to a fluid treatment zone where a crimping process is performed using steam having a temperature of 200 to 260°C, and then to an overfeed area with an overfeed rate of 40 to 100% to undergo a relaxation process. After that, the conductive fibers are introduced into a second tensioning area, where they are subjected to a second tensioning treatment with a stretch rate of 10 to 50%, and conductive fibers are introduced into the second tensioning area, and the dyeable fibers are introduced into the second tensioning area. Different types of synthetic fibers and conductive fibers are guided to an air entangling treatment area and mixed with an overfeed rate of 1 to 5%, resulting in a total denier of 2000 to 5000 deniers and a crimp rate of 13 to 30%.
, a method for producing a conductive multicolor bulky yarn characterized by obtaining a multicolor bulky yarn having a number of entanglements of 30 to 50 pieces/m.

For example, in the case of nylon 6 fiber, the spun and stretched synthetic fibers of different dyeability used in the present invention include:
Light and shade dyed by combining fibers made of polymers with many NH2 terminal groups that can be dyed by acid dyes and fibers made of polymers with few NH2 terminal groups that are dyed with acid dyes and many COOH terminal groups that are not related to dyeing. In addition, fibers made of polymers with many NH2 terminal groups that can be dyed with acid dyes,
These are dyed in different colors by combining them with fibers made of polymers with many SO3Na end groups that can be dyed with basic dyes. Furthermore, there are fibers made of polymers with many NH2 end groups that are dyed by acid dyes, fibers made of polymers with many C0OH end groups that are unrelated to dyeing and few NH2 end groups that are dyed with acid dyes, and fibers that are made of polymers with many C0OH end groups that are dyed with basic dyes. In combination with fibers made of a large amount of polymer, dyeing can be done in dark and light colors and in different colors.

The above-mentioned plural types of fibers having different dyeability are spun and drawn, and the fibers are aligned, and then guided to the first tensioning area, where the stretching ratio is in the range of 2 to 12% where no drawing is substantially performed. A first tensioning treatment is performed.

If the stretch rate in the first tensioning area is less than 2%, the heat treatment with the preheating roller described later will be weak, and it will be difficult to crimp when performing the crimping process in the fluid treatment area, and the On the other hand, the stretch rate in the first tensioning area is 1.
If it exceeds 2%, the fibers are stretched, and this stretching tends to cause quality variations in the length direction of the fibers.

The plurality of synthetic fibers having different dyeability that have been subjected to the first tension imparting treatment are then wound around a preheating roller heated to 150 to 200°C to undergo a preheating treatment.

By performing the preheating treatment, it becomes possible to crimp the polyamide fibers in the next step extremely uniformly.

When performing preheating treatment, the surface temperature of the roller should be set to 15%.
Adjust to a range of 0 to 200°C. If the surface temperature of the roller is lower than 150°C, slack or loops will not easily occur in the fibers when crimping is applied in the next step, and if the surface temperature is higher than 200°C, the single yarn will not melt when crimping is applied in the next step. When this fused portion occurs, the physical properties of the fiber in the longitudinal direction become extremely non-uniform.

The preheated synthetic fibers having different dyeability are then led to a fluid treatment zone and heated at 200-260'C.
The crimping process is carried out using steam at a temperature of

The pressure of the steam used in this fluid treatment area is selected depending on the shape of the nozzle used for fluid treatment, but it is 5 to 9 k
g/cm2 is preferably used.

If the temperature of the steam in the fluid treatment zone is lower than 200"C, it is difficult to fix the slack or loops formed in the fibers, and when tension is applied by the second tensioning device in the subsequent process, the sag or loops are difficult to fix. Loops may disappear, making it impossible to obtain good bulky fibers.Also, if the temperature of the steam in the fluid treatment area exceeds 260°C, some of the single yarns forming m-fibers may fuse to other single yarns. Alternatively, the molecular orientation of the single fibers may be disturbed, which may prevent the quality of the fibers from becoming extremely uniform in the length direction.

Crimp is applied in the fluid treatment zone, and the obtained bulky system is subsequently led to an overfeed zone with an overfeed rate of 40 to 100%, where a relaxation treatment is performed, and the yarn is cooled and wound. The shrinkage is fixed. In this case, a suction perforated drum is usually used.6 The bulky fibers that have been subjected to the relaxation treatment in the above-mentioned overfeed zone are then led to a second tensioning zone, where the fibers are stretched at a stretch rate of 10 to 50%. 2 tension imparting treatment is performed. By setting the stretch rate to 10 to 50%, the loops and shapes of the bulky ia fibers formed in the fluid treatment area and the overfeed area are aligned. When the stretch rate is less than 10%, the loops and slacks of the bulky fibers in the length direction of the polyamide fibers are not aligned, resulting in uneven loops. Also, the stretch rate is 50%
When it exceeds the above, the loops and slack formed in the fluid treatment area and the overfeed area are fully extended, resulting in a decrease in bulkiness.

In the second tensioning area, the stretch rate is 10
A conductive fiber is introduced into a bulky yarn made of a plurality of synthetic fibers having different dyeability, with a dyeability of up to 50%. By introducing the conductive fibers in this second tensioning region, the conductive fibers themselves do not form loops or slacks, and are blocked by the loops or slacks imparted to a plurality of other synthetic fibers with different dyeability. When woven into a carpet, the conductive fibers are hardly exposed to the surface, and the dark color due to the carbon contained in the conductive fibers is covered, making the color tone of other dyed synthetic fibers clearer.

The loops and slacks are straightened in the second tension application zone, and the bulky yarn into which the conductive fibers have been introduced is subsequently led to the air entangling treatment zone. In the air entangling treatment area, the overfeed rate is set in the range of 1 to 5%, and the air entangling treatment is carried out by supplying compressed air to the air entangling nozzle. The air pressure varies depending on the shape of the air entangling nozzle, but it is 5 to 9 kg/
crn2 is preferably used.

By setting the overfeed rate to 1 to 5%, the single yarns forming the bulky yarn are intermixed and tightly bound bundles are alternately formed approximately periodically. If the overfeed rate is less than 1%, the opening of the yarn in the air entangling nozzle may be poor, the single yarns may not be mixed well, and the entangling may occur. On the other hand, when the overfeed rate exceeds 5%, new slack occurs, and this slack tends to become a single yarn that is free and not mixed with other single yarns.

As described above, according to the method for producing a pleochroic bulky fiber according to the present invention, a plurality of types of synthetic fibers having different dyeability that have been spun and drawn are subjected to a first tensioning treatment, a preheating treatment,
The synergistic effect of crimping, relaxation, second tensioning, introduction of conductive fibers, and blending under special conditions allows for multiple types of synthetic fibers with different dyeability to be produced. The formed bulky yarn is preferably used as a fiber for carpets which is extremely homogeneous in the length direction, as each single yarn is mixed and the conductive fibers are separated by the loops and slacks of each single yarn. It is possible to obtain an intermingled yarn.

The method according to the present invention continuously obtains bulky yarn,
Each treatment condition can be controlled very easily, and by maintaining the treatment condition range, high quality conductive multicolor bulky yarn can be efficiently produced.

[Effect of the invention] According to the method for producing conductive multicolor bulky yarn according to the present invention, each single yarn forming fibers with different dyeability does not come loose, and each single yarn forming bulky It is possible to obtain an intermingled yarn that has no unevenness in loops and sag in the length direction of the fibers and is preferably used as a raw yarn for conductive multicolored carpets.

In addition, in the conductive multicolored bulky yarn obtained by the method according to the present invention, the combined conductive fibers are separated by the loops and slacks of each single yarn forming other dyeable fibers, and the dyed fibers are dyed. The color of the adhesive fibers is clear.

Furthermore, the method according to the present invention can continuously produce conductive multicolored bulky yarn, and can operate smoothly without releasing single yarns that form synthetic fibers during the manufacturing process, resulting in high quality. Improved productivity by producing bulky yarn with high efficiency,
Quality control can be easily performed.

Claims (1)

[Claims] In a method for producing conductive multicolor bulky yarn, multiple types of spun and stretched synthetic fibers with different dyeability, excluding conductive fibers, are aligned, and substantially no stretching is performed in a first tensioning region. A first tensioning treatment with a stretch rate of 2 to 12% is carried out, followed by a preheating roller heated to 150 to 200°C for preheating, and then to a fluid treatment zone to be heated to 200 to 200°C. A crimping process is carried out using steam at a temperature of 260°C, followed by an overfeed rate of 40
After being guided to an overfeed region consisting of ~100% and subjected to relaxation treatment, guided to a second tension application region,
Performing a second tensioning treatment with a stretch rate of 10 to 50% and introducing conductive fibers in the second tensioning region,
The plurality of synthetic fibers and conductive fibers having different dyeability are led to an air entangling treatment area and the overfeed rate is 1 to 1.
Mixed fiber treatment is applied in a state of 5%, total denier 2000~
5000 denier, crimp rate 13~30%, number of interlaces 30~
A method for producing conductive multicolor bulky yarn, characterized by obtaining 50 multicolor bulky yarns/m.