JPH01156532A - Yarn-dyeing cheese - Google Patents

Abstract

PURPOSE: To provide a yarn-dyed cheese that comprises a special polyester multifilament non-spirally crimped yarn, can be readily controlled in its winding density and has high dyeing levelness and the shape stability of the package. CONSTITUTION: This yarn-dyed cheese comprises a non-spirally crimped polyester multifilament yarn that has the interlaced bundle parts 12 and the crimped parts with the crimp shape coefficient of <=0.5, defined as crimp elongation-(CE)/ percentage crimp (N). This crimped yarn is produced by interlacing polyester multifilament yarns with an air-jetting flow to form the interlaced bundle parts in the longitudinal direction of the yarn, fixing the yarn shape by its heat-setting under relaxation, then extending the heat-set yarn to delete partially the loops and the interlaced bundle parts. This crimped yarn is wound up to a cheese and dyed, thereby, the objective yarn-dyed cheese is obtained.

Description

[Detailed description of the invention] (Field of application for sedentary work) The present invention is a non-torque random crimp shaped polyester multifilament yarn which is a raised pile yarn for a raised fabric such as a moquette or a cotton yarn suitable for woven or knitted fabrics. Regarding dyed cheese. More specifically, it is possible to control the winding density of yarn-dyed cheese, and to provide yarn-dyed cheese with good level dyeing properties, stable shape, small color difference, and no yarn loss.

(Conventional Kei vJ) Conventionally, there is Xian Song yarn that uses synthetic fiber multifilament, but the winding density of soft rewind is very high, and when dyeing, the winding density of the package increases significantly, so the dyeing solution is difficult to wrap around the package. It becomes difficult to pass uniformly inside the
As a result, the hues of the inner and outer layers differ greatly, making uniform dyeing impossible. Also, when I unwrapped the yarn from the dyeing package, the filament frequently cracked, making it difficult to rewind the yarn.

As a method to improve these r&, the multifilament yarn is subjected to additional twist of ILILl~3 (] Ll 'r/M, then the seventh yarn is subjected to steam treatment, and the yarn is further soft rewinded, There are seven ways to dye the package.

On the other hand, the winding density of gift dyeing and soft rewinding, which yarn dyes false twisted yarn, is lower than that of drawn filament yarn.
However, the shape of both sides of the package deteriorates during the dyeing process, making it difficult to handle. Furthermore, when all of these yarns are dyed, the innermost layer S has a different hue than the outer layer, and the actual situation is that yarn loss of usually 5% occurs.

On the other hand, the traditional m-silk thread, for example, is
In the method disclosed in No. 6, an undrawn synthetic fiber filament is stretched several times and supplied to the injection area without being heat-set, and a jet flow is applied to the filament to entangle the S-grown fibers with each other to form a loop. After heating, the yarn is cooled again by a jet stream to completely heat set, and then drafted to obtain a bulky yarn with latent crimp.

The crimped yarn characteristics of this latent crimped yarn after relaxing in water production have a crimp shape factor of Ll, 6 or more, and when this is used for yarn dyed cheese, the winding density of soft rewinding allows soft winding.

(Inter-setting point to be solved) In view of the above-mentioned problems, we have developed a yarn-dyed cheese made of non-swirling crimped yarn suitable for use as a raised pile yarn for a raised fabric or a knitted fabric, which is suitable for controlling the winding density of a yarn-dyed nurse. To provide a yarn-dyed cheese that is easy to dye, has good level dyeing properties, has poor package shape stability, has small color difference between inner and outer layers, and has no yarn loss.

(Means for Solving the Problems) That is, the present invention provides a non-woven fabric made of polyester multifilament, which has an intersecting converging part and a crimp part in the yarn longitudinal direction, and has a crimp shape The of 0.5 or less. Yarn-dyed cheese yarn with swirling ms yarn.

The curled silk yarn and the polyester multifilament yarn are subjected to an interlacing treatment using an air jet flow, and the yarn is traversed in the longitudinal direction to form the eastern part of the yarn, and then heat-treated in a relaxed state to form a shape. Next, it is a non-swirling crimped yarn characterized by long loops and C, which partially disappears in the eastern part of the paper.

The polyester multifilament yarn supplied to the air injection nozzle referred to here means a spinning winding speed of 70 U O
ffi/min.
- 1.5 times the stretching, or hot-stretching with a hot pin setting at least 6 degrees Celsius lower than the melting point of the supplied wood, or a spinning winding speed of 1500/I! It is obtained by hot drawing the undrawn yarn obtained at 1/min at a drawing ratio of 6 to 4 times.

The entangling treatment with air jets is carried out by means of known injection nozzles used in the production of loop-entangled yarns. Processing conditions such as air pressure, overfeed rate, and nozzle shape are adjusted so that the degree of entanglement is such that loops and intertwined portions can be eliminated by elongation treatment after relaxation heat treatment, which will be described later.

The relaxation heat treatment is performed simultaneously with or after the entanglement treatment using the live air jet flow, but for continuous treatment, it is preferably performed while the yarn is running using a heater.

The type of heater may be either a contact type or a non-contact type, and this heat treatment increases the thermal stability of the yarn.
It is essential to choose conditions such that the pattern strength in the eastern part of the confounding prefecture increases and the loop disappearance effect during the subsequent elongation process is not impaired.

A suitable apparatus for carrying out the described method is shown in FIG.

The polyester multifilament yarn A with a spinning winding speed of 7 UOOffi/min is introduced into the 'fc drawing roller 1.2 through the hot bin 3, and is passed through the roller 2t'' to the known air injection nozzle 4. Entanglement processing while being overfed between roller 2 and roller 5
In the case of k receiving, a thousand loops occur. This overfeed rate is preferably 6 to 60%, and the air pressure is 6 to 7 匈/cm2G depending on the characteristics of the feed material and the cutting speed.
is used.

Next, the yarn is over-fed between rollers 5 and 6 and is subjected to relaxation heat treatment by a heater T.
Its form is heated surface 5E. The yarn tension in the heater is [
The overfeed rate is set to be 1,1,9/d or less.

Note that this relaxation heat treatment can also be carried out by using hot air sound during the alternating treatment with the air jet stream. Next, the yarn is stretched between rollers 6 and 8 while underfeeding, and a part of the loops and entangled bundles generated in the entangling process are stretched and erased, and crimped. becomes latent. The tension of the stretching process is Ll, 59
/Ii or less is preferable, and the injection nozzle, air pressure, injection feed straw, relaxation heat treatment temperature, underfeed rate #! Make all adjustments. Finally, the package B is ticked up onto the winding drum 9.

Overfeed rate of air injection nozzle entangling process is 6%
Below this, the filaments are insufficiently opened, the entanglement becomes a non-light component, and the number of crimps in the obtained crimped yarn decreases. This yarn t soft rewinding is in the direction of increasing the winding density.

On the other hand, when the overfeed rate is 30 inches or more, loop fuzz occurs frequently, entanglement becomes strong, and the elongation treatment after relaxation heat treatment is insufficient to remove the interlace, resulting in fewer crimped portions and more remaining loop fuzz. After soft rewinding of the second thread r, thread breakage occurs due to the loop fuzz catching.
This results in poor unravelability.

When the tension in the relaxation heat treatment heater is 0.11 g/(1 or more), the entangled fixation becomes strong, the interlaced portion is not erased by the stretching process between the rollers 6 and 8, and a lot of loop fluff remains, and , the number of intertwined parts increases.Soft rewinding on this yarn results in unraveling interlacing.

The relaxation heat treatment is carried out at a temperature of 150'C or higher and lower than the melting point at which the filament entanglement can be fixed in shape.

Next, the elongation treatment tension after the relaxation heat treatment was 0.5, V/
Tension of less than d, preferably 0.3,! i' / (1
It is preferable to eliminate the intertwined portions using the following tension. 0.5
Stretching at a speed of 5/d or more is not preferable because the filament will break and cut fuzz will occur. As mentioned above, is it necessary to inject the supply system, relax heat-treated strips, etc. so that the elongation treatment tension is 0.5.9/d or less? It is necessary to set it.

The yarn obtained in this way has a crimp shape factor of 0, which does not have dog loops, but instead has fine crimps.
．． Non-turning property mu of non-torque random crimp of 5 or less
It's a thread. In addition, the number of intertwined converging parts where each constituent filament is intertwined and converged is in the range of 10 to 40/wind, and the long hairs in the crimped part other than the interlaced convergent part are in the range of 5 to 7 Qim, and in each intertwined part. This yarn has a novel structure in which there are 0 to 2 small loops each having a length of 1 inch. The outline of the form of this yarn is shown in FIG. In the figure, the filament 12 made up of 11 companies is a 1ah russo in the eastern part of the interlacing collection.

The non-turning crimped yarn is made into cheese and dyed. The winding density of dyed cheese is 0.3-0.6, V/c
, Mg2 are preferred. If the winding density is less than 0.3 g/cnL3, the thread waste in the cheese interlayer will be hidden. Also, 0.6g/cm
If the winding density is 3 or more, the dye solution cannot pass through uniformly, making uniform dyeing impossible.

Yarn-dyed cheese with a roll density of 0.5-0-69/cm3 can be obtained by producing cheese with a roll density of 0.3 to 0.6 g/cWL3. This is based on the characteristic of the non-turning crimped yarn that it does not shrink during dyeing.

The method for producing cheese is to use a thread speed of 300 to 600 m/min and a winding tension of 6 to 6.
It can be obtained in 11 g.

, the cheese (obtained by dyeing with a disperse dye under suitable conditions. The conditions are, for example, 5% o6w of disperse dye,
f, bath ratio 1:15.115-130℃, 50-60
Can be stained in minutes.

The special purpose of the present invention will become clearer from the following examples. In addition, in the examples, evaluation of the raised fabric was performed based on the following.

Spreadability: A visual sensory test to see that the fabric is transparent, and a universal projector to check the loose state of the pile filament.Pilioelation: Confirmation of the upright state of the pile filament using a universal projector. and Measurement of the difference in pile height between the gray material and the processed material Feeling (texture): Comprehensive judgment based on the thickness of the fabric and a sensory test based on hand-rubbing Also, evaluation of the yarn was carried out as follows.

Boiling water shrinkage rate: According to JIS L 1073-6.12 "Hot water shrinkage rate" measurement method.

Crimp elongation rate: JIS L I Ll 77-
7 Based on the “collapsing shrinkage rate” measurement method.

Number of rolls: JIS L 1074-6.11.1
Roll! According to the ``Ii number'' measurement method.

Number and length of entangled convergence parts: An initial load of 0.1 g/d is suspended on the yarn to be tested, and a yarn length of 50 cm is marked at two points on the top and bottom. Next, divide the multifilament yarn into two at the upper mark point, apply 7 hooks of 60g kJt, let it fall by itself, and when it stops, move the hook directly below it and do this.
Repeat over the entire length of 5 [J (m). The number of stopping points corresponds to the number of entangled convergence parts. Also, measure the feldspar at that point and use it as the core feldspar.

Example 1 One thread of polyester multifilar membrane 185d/48f (breaking elongation 8
0%) was formed, and the yarn package was placed in the apparatus shown in FIG. 2 to carry out the processing of the present invention. The processing conditions were: processing speed 60CH7L/min, expansion ratio *1.2, hot bin temperature 180℃ (hot water yield rate 5%), air injection pressure 4.5匈/an, G1 injection and nitrogen feed. +1
1.1%, relaxation heat treatment O6-feed rate ±aS, heat fixation at 210°C, stretching treatment underfeed single 10-chi.

Further, the polyester multifilament yarn 150a/48f (hot water collection!iiS rate 2 parts) or the raw material yarn is stretched at a spinning winding speed of 7 tJ U Off/min to obtain a polyester multifilament yarn 15[1d/48f]. (
A yarn was obtained by processing under the same conditions as above using a hot water working rate of 8% and 10%.

The characteristics of the crimped yarn after relaxing the obtained crimped yarn in seawater are as follows: the crimped yarn has a ratio of 6U to 66 strands/rIL, and the length δ of each crimped yarn is 16 to 1711 crimps. The crimped yarn has an elongation rate of 1 to 2 and a clinch shape of 10.17, and the crimp form exhibits a random jig, zig, and crimp shape in the yarn length direction.

The obtained yarn was soft rewinded using an RT winder. Rewind conditions were: speed 5 C1 [J m 7 minutes, tension 6 g. After rewinding, the winding capacity is 1 homme, the winding density [
J, 45 i/an3cD pa)y-di that,,
Next, package dyeing was carried out at 115°C to 130°C for 60 minutes using a disperse dye of 5% O, W, f and a bath ratio of 1:15. Next, the yarn-dyed yarn is placed in a double raschel knitting machine to knit a raised fabric, which is center-cut and then finished to produce a sample.

The results of this performance evaluation are shown in Figure 1. In this way, the crimped yarns of 2 to 10 units of hot water utilization rate in the supply system have a random zigzag crimp form, and this yarn dyeing? A fabric knitted using IA curly silk yarn has excellent napping properties and opening properties, and has a very soft texture.

Example 2 Polyester multifilament yarn 185d/48f at spinning winding speed [35U O/F &/min (broken elongation 80%)
) was formed, and this was placed in the apparatus shown in Figure 2 to carry out the processing of the present invention. The processing conditions were a processing speed of 600 m/min, a processing magnification of 1.2, a hot water yield rate of 11% to 50 cm for the thread to be supplied, and an air injection pressure of 5. Q kg/cm”()
, injection plus overfeed vehicle +15.0. The relaxation heat treatment overfeed rate was 0, the heat setting temperature was 220°C, and the elongation treatment underfeed rate was -10. In the process, the same undrawn yarn was stretched at room temperature, a double yarn was used, the overfeed rate was increased to +25.0%, and the yarn was processed under the same conditions as above to obtain a yarn.

Is the resulting crimped yarn a relaxed yarn? eAI
The Kd yarn characteristics are that the interlaced convergence portion exists at a rate of 25 to 28 cm/m, the length of each crimp portion is 19 to 20 cm, the crimp elongation rate is in the range of 6 to 16 cm, and the crimp shape coefficient is 0. .25
~0.46, the stripes fell within the range of the present invention, and these crimps exhibited random Namisugi crimps in the yarn length direction.

The obtained thread was soft rewinded using an RT winder. The rewind conditions were a speed of 51 JO-L/min and a tension of 6 g. Volume 1-1 volume density 0.5 after rewind
．． 9/cm3 package, then disperse dye 5
% o, w, f, 13Ll'CX at bath ratio 1:15
Package staining was performed with a 60 minute treatment. Next, the yarn-dyed yarn is put into a double raschel @ machine to create a raised fabric.
After center cutting, finish processing and obtain samples.

The results of the performance evaluation of C are shown in 11-1. In this way, if the feed system is processed with a hot water shrinkage rate of 11 to 50%, the crimped yarn will be in the form of a random wave crimp, and the fabric will be knitted using this crimped yarn as a pile yarn. is piloerection,
In addition, it has excellent fiber opening properties and has a very soft texture.

The pile has a large number of crimps and has a rich sense of volume, and with the same amount of yarn, it is possible to obtain a sufficiently open pile without the ground structure being visible. Moreover, since the pile has no directionality, finger marks can be imparted, and a fabric rich in layered taste can be obtained.

Comparative example f Acceptable ester multifilament yarn 15Qa/4Bf
C) Soft rewinding was performed using an iRT winder. Rewind condition is speed 50077/
The tension was 61. After rewinding, the amount of winding was 1 to form a package with a winding density of L1.8D, 9/cvL3, and then a disperse dye of 5% O, W, F.

Package dyeing was carried out by processing at 160° C. for 60 minutes at a bath ratio of 1:15. The winding density after dyeing is 0.869/clrL
3 and 9, inside and outside l - there is a large color difference.

Next, Table 1 shows the results of the dyed yarn T-double Raschel machine. Fabrics knitted using this yarn-dyed yarn as pile yarn have poor opening properties and are transparent to the ground, resulting in poor products.

Comparative Example 2 False twisted yarn 150a/48f (hot water shrinkage rate 6%)'i
A soft rewind was performed using the RT winder. The rewind conditions were a speed of 500 m for 7 minutes and a tension of 6 g.

The winding amount after rewinding is 1 to 9, the winding density is 0.459 /
Form a package of cm3, then disperse dye 5%
Package dyeing was carried out at 130°C x 6D at a bath ratio of 1:15. The winding density after dyeing is 0
．． 559/cm3, the color difference between the inner and outer layers is large, and the inner layer is 100. ! i' resulted in yarn loss. The yarn-dyed yarn was put into a double Raschel #a machine to form a raised fabric (t-i), and after center cutting, finishing was performed to obtain a sample. The results of this performance evaluation are shown in the first column. A fabric knitted using this yarn-dyed yarn as a pile yarn has poor napping properties and opening properties. In addition, the pile standing is poor, a felting phenomenon occurs, and the product has a strong white blur, resulting in a poor product.

(Bottom bottom margins) (Effects of the invention) The yarn-dyed cheese of the present invention has good level dyeing properties, excellent morphological stability, small color difference, and no thread loss, so it does not take up much space or handling. is good.

[Brief explanation of the drawing]

Does Figure 1 apply to the present invention? An enlarged view showing the form of the rAm thread; FIG.
FIG. 2 is a schematic diagram illustrating an example. 1.2... Grinding roller 1, 3... Hot pin, 4...
...Air injection nozzle, 5.6.8...Roller, 1...
・Heater, 9... Winding drum, 11... Filament, 12... Also gathering east. Patent applicant: Asahi Kasei Industries, Ltd. Figure 1 Figure 2

Claims (1)

[Claims] It has an interlaced convergence part and a crimp part in the yarn length direction, and has a crimp elongation rate (C
The crimp shape factor defined by E)/number of crimps (N) is 0.
．． Yarn-dyed cheese made of non-turning crimped yarn made of polyester multifilament having a molecular weight of 5 or less.