JPH0473230A - Multicolored multiplexed bulky yarn and production thereof - Google Patents

Abstract

PURPOSE:To obtain the title yarns capable of giving in high efficiency carpets of constant color with the respective single fibers mutually intermingled through such a way that when each specific three kinds of polyamide fibers differing in dyeability from each other are to be spun and drawn, only draw ratios are made different between said three kinds of fibers. CONSTITUTION:When (A) polyamide fibers 6.9 X 10<-5> to 8.2 X 10<-> mol/g in the amount of NH2 end group, (B) a second kind of polyamide fibers 3.8 X10<-5> to 5.1 X 10<-5> mol/g in the amount of NH2 end group and (C) a third kind of polyamide fibers 3.5 X 10<-5> to 5 X 10<-5> mol/g in the amount of SO3Na end group are each to be spun and drawn, the draw ratios a, b and c for the fibers A, B and C, respectively, are designed to satisfy the relationships: b>=a+0.2 and b>=c+0.2, and these three kinds of fibers are put to tripled bulky textured processing, thus obtaining the objective yarns. In the present yarns, the elongation at break and intermediate elongation of the fibers B differ, respectively, from those of the fibers B and C by + or -<5%.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a polychromatic doubled bulky yarn, and more particularly to a multichromatic doubled bulky yarn made of polyamide fiber suitable for use in carpets. It is something.

[Prior Art] A conventionally known polychromatic doubled bulky yarn is described, for example, in Japanese Patent Publication No. 58-37403. The special public official Showa 5
The multicolored bulky yarn described in Publication No. 8-37403 is prepared by mixing a colored bed colored with a pigment or a pigment masterbatch and a raw resin in a desired ratio, or by mixing a pigment and a raw resin powder. The heterochromaticity of the bulky yarn is not only when the actual color is different, but also when it is dyed after being manufactured as a bulky yarn. Differences in coloring properties include the concentration of the same type of dyed sheets, differences in the type of dyed sheets themselves, and differences in the type of polymer (for example, polypropylene). and nylon), and even the same polymers have different coloring properties depending on their fineness.

[Problems to be Solved by the Invention] When the polymer for obtaining the multicolored bulky yarn is polyamide, in order to have different types of dyed sheets themselves, it is necessary to use an NH2 terminal group amount regulator or C0OH. terminal group amount regulator,
SO3Na end group introduction agent is used.

It is difficult to make the polymerization degree of the polyamide to which the above-mentioned terminal group amount adjusting agent and terminal group introducing agent are added to a high degree of polymerization, and in addition, there are problems such as being susceptible to thermal denaturation in the spinning machine. .

The present invention provides a polyamide cap that satisfies both of the contradictory relationships between high strength, spinnability, and dyeability by increasing the degree of polymerization of the polyamide fibers, that is, The purpose of the present invention is to provide multicolored bulky yarn made of polyamide fibers.

[Means for Solving the Problems] The structure of the present invention is as follows: (1) In the polychromatic yarn bulky yarn, the NH2 terminal group is 6
．． 9X1'0-5 mol/g to 8.2X10-5 mol/g
The polyamide fiber (A) is 3.g and the NH2 terminal group is 3.g.
Polyamide fiber (B) with 8X10-5 mol/g to 5.1XIO' mol/g, SO3Na end groups 3.5X
The polyamide fiber (C) having a concentration of 10-5 mol/g to 5.0×10-5 mol/g is bulk-processed, and the cutting elongation and intermediate elongation of the polyamide fiber (B) are higher than those of other polyamides. A multicolor doubled bulky yarn characterized by being ungrooved by ±5% compared to fibers (A> and (C)).

(2) In the method for producing multicolor doubled bulky yarn, NH2
Terminal group is 6.9X10-5 mol/g to 8.2X10'
Polyamide fibers (A) with NH2 end groups of 3.8X10' mol/g to 5. lX10'mol/g
The polyamide fiber (B) is
．． 5X10-5 mol/g to 5, OX 10-5 mol/g
The polyamide fiber (C) is processed to make it bulky, and the cutting elongation and intermediate elongation of the polyamide fiber (B) are ±5 compared to other polyamide fibers (A) and (C). % or less, in the process of spinning and drawing the polyamide fibers (A), (B) and (C), the drawing ratio (b) of the polyamide fiber (B) In relation to the draw ratio (a) of the other polyamide fiber (A) and the draw ratio (c) of the polyamide fiber (C), (b)≧(a)+0.2 (b)≧(c)+0.2 The present invention provides a method for producing a bulky multicolored multicolored yarn.

For example, hexamethylene diamine, benzoic acid, acetic acid, etc. are used as an adjusting agent for the amount of NH2 end groups and the amount of C0OH end groups in polyamide, and as an agent for introducing SO3Na end groups, sodium 2-sulfobaracresoxyacetate, 5-sulfonate, etc. are used. Isophthalic acid and the like are used.

The multicolored bulky yarn consists of three types of boramid fibers classified as A, B, and C. NH2 terminal group is 6.9X10
For example, hexamethylene diamine is used as an end group regulator, and the polyamide fiber <A> having a density of 0 mol/g to 82×10 mol/g has a large number of NH2 terminal groups and a small number of carboxyl groups. It is deeply dyed with acid dye.

NH2 end groups from 3.8X10-5 mol/g to 5. lX
The polyamide 11IA fiber (B) with 10' mol/g is
For example, a dicarboxylic acid is used as the end group regulator, and it has a slightly lower number of NH2 end groups and is lighter in color than acid dyes.

SO3Na end groups range from 3.5X10-''mol/g to 5.
The polyamide fiber (C) with 0XIO'mol/g is S
As an O3Na terminal group introducing agent, C0OH group and SO3Na
For example, [sodium 2-sulfo-P flexioxyacetate] is used, which has a group at the same time, in which the NH2 end group is reduced and the SO3Na end group is introduced, and is dyeable to basic dyes.

The polyamide fiber (A> is NH2 terminal group or 6.9x
When it is less than 1O-5 mol/g, polyamide m fiber (B
) The color difference after dyeing with acid dye is not clear, and N
If the H2 end group exceeds 8.2 x 10-'' mol/g, the polymerization time to obtain a high degree of polymerization becomes long, resulting in extremely poor productivity, as well as frequent contamination of the spinneret during spinning, resulting in poor spinning properties. It is difficult to keep the quality of the resulting fibers constant, and this is assumed to be a phenomenon caused by the inclusion of a large amount of the NH2 end group modifier.

The polyamide fiber (B) has an NH2 terminal group of 3.8x
If the amount is less than 1O-5 mol/g, the color tone after dyeing with acid dyes will not be clear and will be close to white.
If a large amount of the regulator is mixed in, problems similar to those of the polyamide fiber (A) are likely to occur during the polymerization and spinning processes. The same color difference, that is, the same color shading difference with the fiber (A) becomes unclear.

The polyamide fiber (C) has SO3Na terminal groups of 3.
When the amount is less than 5×10' mol/g, only the color of the polyamide fiber (A>) stands out after dyeing, and the existence value of the polyamide fiber (C) decreases.

On the other hand, if the SO3Na end group exceeds 5.0XIO'mol/g, a large amount of SO3Na end group introducing agent is mixed, which not only increases the polymerization time in the polymerization process but also leads to the introduction of a large amount of SO3Na end group. Depending on the agent,
It inhibits the dispersibility of titanium oxide added to the polyamide fiber (C), and the titanium oxide is prevented from being spun by the filter in the foreign matter filtration zone of the spinning process, causing uneven dispersion of titanium oxide in the spun polyamide fiber. At the same time, the filter is clogged, and the internal pressure in the foreign matter trap area is extremely increased. Therefore, it is necessary to frequently replace the filter in the foreign matter filtration zone of the spinning process, which is undesirable from both quality and productivity points of view.

The above polyamide fibers (A), (B) and (C) are each independently spun and drawn. Polyamide fiber (A)-
The manufacturing conditions for (B) and <C> are the same, and only the stretching ratio in the stretching process is different.

The above stretching ratio is set so that the breaking elongation and intermediate elongation of the polyamide fibers (A), (B) and (C) have approximately the same characteristics, that is, the polyamide fibers (A) and (C)
The stretching ratio of the polyamide fiber (B) is set to be different so that the elongation of the polyamide fiber (B) is less than ±5% compared to the above.

The stretching ratio (b) of the polyamide fiber (B) is higher than the stretching ratio (a) of the polyamide fiber (A).
) Adopt a draw ratio higher than +0.2. That is, by satisfying (b)≧(a)+0.2, the elongation of the polyamide fiber (B) is made less than ±5% with respect to the elongation of the polyamide fiber (A>).

Furthermore, the draw ratio (b) of the polyamide fiber (B) is higher than the draw ratio (C) of the polyamide fiber (C) by at least 0.2 plus the draw ratio (c). That is, by satisfying (b)≧(c)+0.2, the elongation of the polyamide fiber (B) is made less than ±5% with respect to the elongation of the polyamide fiber (C).

The polyamide fibers (A>(B) and (C) are each independently spun and drawn, and then transferred to a crimping process.

In the crimping process, the polyamide fibers (A) (B
) and (C) are drawn and combined. These spun polyamide fibers are subjected to a first tensioning treatment in a first tensioning region at a stretch rate in the range of 2 to 12% at which stretching is not substantially 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 during the crimping process in the fluid treatment area, and the Also, crimp spots in the length direction tend to occur, which is undesirable.

On the other hand, if the stretch rate in the first tension application region exceeds 12%, the polyamide fibers are stretched, and this stretching tends to cause quality variations in the length direction of the polyamide fibers.

The polyamide fiber that has been subjected to the first tension imparting treatment is 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, the fibers are less likely to slack or loop when crimped in the next step, and if the surface temperature is higher than 200°C, the single yarns will be fused when crimped in the next step. When this fused portion occurs, the physical properties of the fiber in the longitudinal direction become extremely non-uniform.

Said preheated polyamide fibers are subsequently led to a fluid treatment zone and crimped using steam having a temperature of 200 to 260° C., where they are used to form slacks and loops. The pressure of steam is selected depending on the shape of the nozzle used for fluid treatment, but it is between 5 and 9
kg/cm2 is preferably used.

If the temperature of the steam in the fluid treatment zone is lower than 200°C, the slacks and loops formed in the polyamide fibers will be fixed and sagged, and will not sag when tension is applied by the second tensioning device in the subsequent process. or loops may disappear, making it impossible to obtain good bulky fibers. Furthermore, if the temperature of the steam in the fluid treatment area exceeds 260°C, some of the single filaments forming the polyamide fibers may fuse to other single filaments or disturb the molecular orientation of the single filaments. It may be possible to prevent the quality from becoming extremely uniform in the direction.

The crimps are applied in the fluid treatment zone, and the obtained bulky yarn is subsequently led to an overfeed zone having an overfeed rate of 40 to 100%, where it is cooled and the crimps are fixed.

In this case, a suction perforated drum is usually used.

The bulky yarn subjected to the relaxation treatment in the above-mentioned overfeed region is subsequently guided to the second tensioning region, and is subjected to a second tensioning treatment with a stretch rate of 10 to 50%. By setting the stretch rate to 10 to 50%, the loops and slack of the bulky yarn 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 yarns in the length direction of the polyamide fibers are not aligned, resulting in uneven loop fibers. Further, when the stretch rate exceeds 50%, the loops and slack formed in the fluid treatment region and the overfeed region are completely stretched, resulting in a decrease in bulkiness.

The bulky yarn whose loops and slacks have been smoothed out in the second tension applying zone is then guided to the air entangling treatment zone.

In the air entanglement treatment area, the overfeed rate is 1 to 5%.
This is done by supplying compressed air to the air interlacing nozzle. Although the air pressure varies depending on the shape of the air entangling nozzle, 5 to 9 kg/cm2 is preferably used.

By setting the overfeed rate to 1 to 5%, the single yarns forming the bulky yarn are intermixed to form tightly bound bundles alternately and 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 separated without being mixed with other single yarns.

As mentioned above, in the method for producing multicolor blended bulky yarn, multiple types of dyeable synthetic fibers that have been spun and drawn under specific conditions are subjected to a first tensioning treatment and a preheating treatment. , crimping treatment, relaxation treatment, second tension imparting treatment, introduction of conductive fibers, and blending treatment under each condition. Due to the synergistic effect, multiple types of polyamide fibers with different dyeability can be produced. The bulky yarn formed by this method is an intermingled yarn that is preferably used as a raw yarn for force bets and is extremely homogeneous in the length direction, in which the individual single yarns are intermixed.

In particular, the polychromatic doubled bulky yarn according to the present invention has a polyamide fiber (B) with a draw ratio of <b) compared to other polyamide fibers (A).
The resulting bulky yarn was woven or knitted and dyed by drawing at a higher draw ratio than the draw ratios (b) and (c) of the polyamide fiber (C) and making the elongation approximately equal. In the subsequent carpet, each single yarn of the three polyamide fibers (A), (B), and (C) is mixed approximately evenly to form a pile, and the particularly emphasized part, that is, the color layer Not possible to form a multicolored carpet.

In addition, in the polychromatic doubled bulky yarn according to the present invention, the NH2 terminal group of the polyamide fiber is 6.9X10-5 mol/g to 8
．． 2 x 10' mol/g, and the NH2 terminal group of the polyamide fiber (B) is 3.8 x 10-5 mol/g to 5.1 x
lO-5 mol/g, SO of polyamide fiber (C)
3Na end group from 3.5X10-"mol/g to 5.ox
to' mol/g, and the color difference of each polyamide fiber when polyamide fibers A, B, and C are combined and bulked, and the resulting bulky yarn is woven into a dyed carpet. In other words, the same color difference between polyamide fibers A and B, and the different color difference between polyamide fibers A and B and polyamide fiber C are clear, and the subtle soft color tone due to the intertwining of each single yarn of the fibers with different color differences. I'll bring it out.

Furthermore, the three types of polyamide fibers forming the intermingle, which is the multicolored bulky yarn of the present invention, have good spinnability, and the resulting fibers are homogeneous and have excellent quality and productivity.

“Effect of the invention” The multicolored bulky yarn of the present invention has three different dyeing properties.
Carpet piles can be formed in a state in which the individual yarns forming the polyamide fibers are mixed almost evenly, and the carpet obtained by weaving or knitting has a particularly emphasized color area, that is, a color layer. , has a constant color without vertical streaks.

Moreover, the multicolor spun bulky yarn according to the present invention is an intermingle, and the bulky yarn made of three types of spun polyamide fibers has a clear color difference among the polyamide fibers, and the color difference is The individual filaments of the fibers are intertwined, and when woven or knitted into a strength pet, no vertical streaks occur and it has a subtle soft color tone.

Furthermore, the polychromatic compounded bulky yarn according to the present invention is homogeneous with less trouble in the spinning process, and there is no cutting of the bulky yarn in the carpet weaving process, making it possible to efficiently obtain carpets. It has many effects.

Claims (2)

[Claims] (1) In the polychromatic doubled bulky yarn, the NH_2 terminal group is 6.9 x 10^-^5 mol/g to 8.2 x 10^-^
5 mol/g of polyamide fiber (A) and NH_2 end groups of 3.8×10^-^5 mol/g to 5.1×10
^-^5 mol/g polyamide fiber (B) and SO
_3Na end group is 3.5 x 10^-^5 mol/g to 5
．． Polyamide fiber (C
) is processed to make the polyamide fiber (
The breaking elongation and intermediate elongation of B) are higher than that of other polyamide fibers (
A multicolored bulky yarn characterized by being less than ±5% compared to A) and (C). (2) In the method for producing multicolor doubled bulky yarn, NH_
2 terminal group is 6.9×10^-^5 mol/g to 8.2×
10^-^5 mol/g of polyamide fiber (A);
NH_2 end group is 3.8×10^-^5 mol/g to 5
．． Polyamide fiber (B
) and a polyamide fiber (C) having an SO_3Na terminal group of 3.5 x 10^-^5 mol/g to 5.0 x 10^-^5 mol/g have been subjected to bulk processing, and the above-mentioned In the method for producing a polychromatic doubled bulky yarn in which the breaking elongation and intermediate elongation of the polyamide fiber (B) are less than ±5% compared to the other polyamide fibers (A) and (C), the In the process of spinning and drawing the polyamide fibers (A), (B) and (C), the drawing ratio (b) of the polyamide fiber (B)
In relation to the draw ratio (a) of the other polyamide fiber (A) and the draw ratio (c) of the polyamide fiber (C), (b)≧(a)+0.2 (b)≧(c)+0.2 A method for producing a bulky polychromatic composite yarn.