JP2000273755A - Treatment of rope-like fiber structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a new method for treating a rope-like fiber structure by subjecting the rope-like fiber structure to a wetting treatment and the like and then thermally treating (heat-setting) and finishing the rope-like fiber structure. SOLUTION: This method for treating a rope-like fiber structure 1 comprises circulating the rope-like fiber structure 1 in a closed circulation system. Therein, the rope like fiber structure 1 in a wet state is circulated with a fluid at a high speed in a high temperature circulation system to preliminarily treat the rope-like fiber structure 1 and then further circulated with a gas flow, while raising the temperature of the circulation system to a range of 150-200 deg.C, thus thermally treating the rope-like fiber structure 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for treating a rope-shaped fiber structure, and more particularly, to a method for treating a rope-shaped fiber structure in which a heat treatment conventionally performed in a spread state is performed in a rope form. About.

[0002]

2. Description of the Related Art Conventionally, in the finishing process of a fiber structure, a heat treatment (heat set) step has been an essential step depending on the type and use of the fiber. For example, in the case of a fibrous structure containing polyester fibers, heat treatment is an indispensable step for obtaining dimensional stability by utilizing the property of shape fixation by heat treatment and for removing and recovering wrinkles.

FIG. 2 is a process chart showing an example of a process from scouring to final setting which is usually performed on a fibrous structure. At the site of the finishing process, as shown in FIG. 2, as a preparation before supplying the fibrous structure to the refining process, the end of a piece of cloth is connected and connected by a predetermined amount, and the piece is shaken down onto a bogie or the like and folded. Work is performed, and the fiber structure that has been completed is supplied to the scouring process. The fibrous structure after the completion of the scouring step is then supplied to the relaxation step,
Before that, the work of folding a tatami mat is performed again by swinging the fiber structure onto a cart or the like.

[0004] Next, the fiber structure after the relaxation step is sent to the drying step. Conventionally, the drying step and the subsequent heat setting step are performed in a spread state in order to remove wrinkles generated in the previous step. Has been done. For this reason, the fiber structure that has passed through the relaxation step is folded and then spread. After the spreading operation, the fiber structure is folded again in the spread state and sent to the drying step. After the drying step, the sheet is folded again and supplied to a heat setting (preset) step to perform a heat treatment.

[0005] The fiber structure thus heat-set is then subjected to various processings depending on the application.
In the example shown in FIG. 2, an alkali weight reduction process is performed, and then a wet process such as a dyeing process and a resin process is performed. After drying, a heat set (final set) is finally performed again. These alkali weight reduction processing, dyeing processing, resin processing may or may not be performed depending on the use of the fiber structure, but the final set is generally performed as the final step of these processing. Yes, it is important to determine the final quality of the fibrous structure. As described above, in the conventional finishing process, the tatami mating operation is repeatedly performed each time the above-described processing is completed, and drying and heat treatment (heat set) requiring a large amount of heat energy are separately performed in the spread state. It has been an extremely inefficient operation because it does.

[0006]

DISCLOSURE OF THE INVENTION The present invention solves the problems of the conventional finishing process as described above, and treats a fibrous structure in a rope shape following wet treatment or the like. The present invention proposes a novel finishing step of subjecting the fiber structure to heat treatment (heat setting).

[0007]

SUMMARY OF THE INVENTION According to the present invention, when a rope-shaped fiber structure is circulated and rotated in a closed circulating system to perform treatment, the rope-like fiber structure is wetted in a circulating system at a high temperature of 100 to 130 ° C. 200 m /
After pre-processing by circulating and rotating at a high speed of at least a minute or more, subsequently, the fiber structure is circulated and rotated by a gas flow and the temperature in the circulating system is raised to a range of 150 to 200 ° C. A heat treatment of the rope-shaped fiber structure.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail.
The present invention relates to a method of performing heat treatment in the form of a rope by circulating and rotating a rope-shaped fiber structure in a closed circulation system. The fluid is ejected so as to obtain the rope structure, whereby the rope-shaped fiber structure is circulated and rotated at a high speed. The fluid includes:
A gas is mainly used to impart the propulsion energy of the circulation rotation to the rope-shaped fiber structure. As the gas, an inert gas such as a nitrogen gas may be used, but generally, air is used. However, the rope-shaped fiber structure of the present invention is circulated and rotated in a wet state at first, and the liquid contained in the fiber structure is scattered in the circulated and rotated fluid. There is.

[0009] In the heat treatment method of the present invention, before the heat treatment, the rope-like fiber structure in a wet state is subjected to 100 to 13 in advance.
It is important to perform processing by circulating and rotating at a high speed of 200 m / min in a circulating system brought to a high temperature state of 0 ° C. The heat treatment of the present invention includes scouring / relaxation treatment, alkali weight reduction treatment,
Dyeing treatment, wet treatment such as water washing after resin processing is performed in the circulation system in the form of a rope, and after the treatment liquid is drained, it is performed in the same circulation system. The wet rope-like fiber structure may be used as it is. The moisture content of the wet fibrous structure is 50 to 50%.
Those having a range of 200% are preferably used.
Those having a water content of 0% or less are preferably used.

Usually, the strain imparted in the previous step (treatment) remains in the rope-shaped fiber structure (residual strain), but when the temperature of the pretreatment is lower than 100 ° C. In some cases, the residual strain is not removed, which is not preferable. On the other hand, when the temperature exceeds 130 ° C., the heat capacity of the fibrous structure in a wet state is increased to increase the temperature, and the heat efficiency is deteriorated, which is not preferable. The treatment at such a temperature is performed for a time in the range of 5 to 30 minutes. During this time, moisture (moisture) is removed from the wet fiber structure, and the fiber structure is in a dry state. The dried fiber structure is 5.0% or less, preferably,
It has a water content of 1.0% or less.

If the circulation rotation speed is less than 200 m / min, rope-like wrinkles may remain on the fiber structure, which is not preferable. The fiber structure is practically 200 to 15
It is preferable to circulate and rotate at a speed in the range of 00 m / min. Such processing is performed using a processor as shown in FIG. 1 described below.

FIG. 1 is a side view schematically showing an example of a circulation system used in the present invention. In FIG. 1, a rope-shaped fiber structure 1 circulates and rotates along with a fluid in a circulation path, and the circulation path includes a circulation path portion 2 where the fiber structure 1 moves at high speed and a circulation path where the fiber structure 1 moves at low speed. Road part 2 '. The supply of the fluid is performed by a fluid ejecting port or an apparatus having a structure in which gas and liquid are separately supplied from the fluid ejecting nozzle 3 and ejected so as to impart circulating rotational energy to the fibrous structure 1.

When the wetting treatment is performed in the circulating system, the treatment liquid is injected and supplied from a fluid ejection port or a fluid ejection nozzle 3 and circulates together with the fibrous structure 1. Will be stagnated. Further, if necessary, the liquid in the liquid storage tank 4 is supplied to the liquid transfer pipe 7, the circulation pump 5, the heat exchanger 9.
After that, the fluid is again supplied from the fluid ejection port or the fluid ejection nozzle 3 and circulated. The liquid in the liquid storage tank 4 is drained by opening the drain valve 11 if necessary after the wetting treatment. After the drainage, the fibrous structure 1 is obtained in a wet state having a moisture content in the above-mentioned range.
200m / in a circulating system at a high temperature of 0 to 130 ° C
Process by circulating and rotating at a high speed.

On the other hand, the gas for imparting the circulating rotation energy to the fibrous structure is jetted and supplied to the circulation path from the fluid ejection port or the fluid ejecting nozzle 3 to impart the circulating propulsion energy to the fibrous structure 1. Then, a part thereof circulates through the gas transfer pipe 8, the blower 6, the heat exchanger 10 and the like from the circulation path portion 2 'at which the fiber structure 1 becomes slow, and again, the fluid injection port,
Alternatively, the fluid is jetted and supplied from the fluid jet nozzle 3.

As described above, the wet fibrous structure 1 is
200 m /
By pre-processing by circulating and rotating at a high speed for
The rope-like fiber structure is obtained from a wet state to a dry state. The thus-dried rope-shaped fibrous structure 1 is subjected to a heat treatment by continuously circulating and rotating by a gas flow and raising the temperature in the circulating system to a range of 150 to 200 ° C. Things. The time of the heat treatment is in the range of 5 to 30 minutes, but it goes without saying that such heat treatment conditions are appropriately determined according to the type and basis weight of the fibers constituting the fiber structure 1 to be treated. .

The fibers constituting the fiber structure used in the present invention are made of synthetic fibers such as polyester fibers, polyamide fibers and acrylic fibers because of their thermoplasticity. Optimum examples include those containing polyester fibers having excellent heat setting properties.
In addition, a fabric such as a woven fabric, a knitted fabric, or a non-woven fabric is used as the fiber structure.

[0017]

As described above, according to the present invention, before the heat treatment, the wet fibrous structure is circulated and rotated at a high temperature of 100 to 130 ° C. to carry out the pre-treatment, so that the fibrous structure has a high moisture content. (Moisture) is removed, the fiber structure is dried at the same time, and then heat treatment is performed by circulating and rotating the fiber structure in a circulating system in a higher temperature state.
By these treatments, heat treatment can be performed without causing rope wrinkles in the rope-shaped fiber structure, and it is not necessary to treat the fiber structure in a spread state.

Conventionally, a fiber structure containing polyester or the like is relaxed by a liquid flow treatment machine or a rotary washer. After these treatments, the subsequent heat treatment is generally performed in a spread form. It was a target. When the scouring / relaxation treatment is performed by a conventionally used liquid flow type processing machine, rope-like wrinkles are generated in the fiber structure. Processing was required. According to the present invention, such an operation of forming the spread cloth can be omitted, including the front and rear work of folding the tatami mat, and further, it is excellent in terms of thermal efficiency.

In the treatment method of the present invention, the wet fibrous structure circulates and rotates at a high speed while hitting the wall of the circulation path. At this time, the ratio of the liquid serving as a buffer material is low around the fiber structure as in the treatment by the conventional liquid jet dyeing machine, and the collision with the wall of the circulation path causes the fiber structure to impinge on the fiber structure. Since it is carried out randomly and frequently, the residual strain imparted to the fibrous structure in the pretreatment is easily removed.
That is, a mechanical force of collision with the wall of the circulation path is applied, and further, since the fibrous structure is in a wet state, it retains an appropriate amount of liquid (moisture) and is heated to a high temperature. Therefore, the strain stress accumulated in the fibrous structure is easily alleviated by these, and more surprisingly, despite the rope shape, the rope-like wrinkle often generated by the conventional liquid flow treatment hardly occurs. The result was obtained.

Further, in the present invention, after the pretreatment in the wet state, the treatment is carried out at a higher temperature, so that the fibrous structure can be brought into a thermally stable state and the object of the heat treatment (heat set) can be achieved. One is easily achieved. Also,
Conventionally, wrinkles were removed at the same time as the heat treatment performed in the spread state. However, in the heat treatment of the present invention, removal of the wrinkles performed in the spread state is unnecessary because the treatment in the wet state is performed before the heat treatment as described above. Became.

Further, the purpose of the heat treatment is to correct the fluctuation of the width of the fiber structure and to determine the amount of property, but in the present invention, the width of the fiber structure hardly changes and the correction of the width due to the spread state is not possible. Needed. This is an effect of a combination with the treatment in the wet state described above, and is considered to be related to the fact that the rope-like wrinkles do not occur even though the fibrous structure is in the rope state, but the detailed mechanism is not clear.

[0022]

EXAMPLES The present invention will be described in more detail with reference to the following Examples, but it should not be construed that the present invention is limited thereto. In addition, the measurement of the evaluation item used in the Example was based on the following method.

(1) Heat Shrinkage Length of a Predetermined Portion of Sample Before Processing with Hot Air Dryer: L ₀
Was measured, and the temperature of the hot air dryer was set to the temperature shown in Table 1. After treating for 1 minute, the length of the predetermined portion:
To calculate the thermal shrinkage ratio by the following equation by measuring the L _1. Heat shrinkage (%) = {(L ₀ −L ₁ ) / L ₀ } × 100

(2) Fabric width variation coefficient Coefficient of fabric width was selected from 30 randomly selected sample fabrics, and the width: X was measured at that location, and the fabric width variation coefficient was calculated from the average and standard deviation of the measured values. (%).

Example 1 A polyester filament yarn (80 denier / 36 filament, S twist: 35) was used as the warp.
Polyester yarn (75 denier / 36 filaments, S twisted yarn and Z yarn)
The woven fabric was woven using a twist of 2800 turns / m), and the woven fabric was subjected to relaxation scouring, drying, presetting, and alkali reduction by a standard method. The obtained woven fabric was treated with a treatment liquid having a formulation shown in Table 1 below using a fluid jetting port as shown in FIG. 1 or an airflow type dyeing machine capable of supplying a jetting fluid from the fluid jet nozzle 3. : 2
The mixture is operated at a cloth speed of 500 m / min and circulated and rotated by a mixed fluid in which a liquid having a bath ratio of 1: 7 and a gas composed of air are used together at a bath ratio of 1: 7. Dyeing treatment was performed for 30 minutes to dye beige.

[0026]

[Table 1]

After the dyeing treatment, the temperature of the circulating system is cooled to 100 ° C., and then the supply of the liquid is stopped, and the wet fibrous structure obtained is circulated through only the gas stream heated to a temperature of 130 ° C. Processing by rotating, drying at the same time,
The temperature of the supplied gas was increased by a heat exchanger, and a gas having a temperature of 160 ° C. was ejected from a fluid ejection nozzle, and this treatment was performed for 10 minutes. Table 2 shows the evaluation results of the obtained woven fabric.

[Comparative Example 1] A plain-textile woven fabric was woven in the same manner as in Example 1, then relaxed scouring, drying, presetting, alkali reduction and dyeing treatment were performed in the same manner as in Example 1, and then the circulation system After cooling the temperature to 80 ° C., the liquid was drained. Thereafter, the woven fabric was taken out, spread, and dried. Next, a heat treatment was performed by a heat setter made by Hirano Techseed at a temperature set to 160 ° C. under a condition of passing through a heat set zone for 40 seconds. The evaluation results of the obtained woven fabric are also shown in Table 2.

[0029]

[Table 2]

As shown in Table 2, the woven fabric obtained in Example 1 did not show any noticeable wrinkles, had a low heat shrinkage (no residual shrinkage), and showed a warp and a weft in each direction. The growth was stable and well-balanced. In addition, a result comparable to that of Comparative Example 1 as a conventional process was obtained.

[Brief description of the drawings]

FIG. 1 is a side view schematically showing an example of a circulation system used in the present invention.

FIG. 2 is a process chart showing an example of a process from scouring to final setting usually performed on a fiber structure.

[Explanation of symbols]

 1 fiber structure 2, 2 'circuit

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masaaki Sekimoto 1-6-7 Minamihonmachi, Chuo-ku, Osaka, Osaka Teijin Limited (72) Inventor Shuji Minato 1-6, Minamihonmachi, Chuo-ku, Osaka, Osaka No. 7 Teijin Limited (72) Inventor Makoto Higashi 1-6-7 Minamihonmachi, Chuo-ku, Osaka-shi, Osaka Prefecture Inside Teijin Limited (72) Inventor Shirou Fumiro 4-25-102 Kadomonimachi, Nishinomiya City, Hyogo Prefecture No. F term (reference) 3B154 AA07 AA08 AA09 AB20 AB21 AB22 AB28 BA32 BA60 BB12 BB33 BB46 BB49 BE01 BE04 BF01 BF14 DA21

Claims (2)

[Claims] 1. A process in which a rope-shaped fiber structure is circulated and rotated in a closed circulation system to perform processing.
The fibrous structure in a wet state in a circulating system at a high temperature of 0 ° C. is preliminarily treated by circulating and rotating a fluid at a high speed of 200 m / min or more, and subsequently, the fibrous structure is subjected to a gas flow. And the temperature inside the circulating system is reduced to 15
A method for treating a rope-shaped fiber structure, wherein the rope-shaped fiber structure is subjected to a heat treatment by raising the temperature to a range of 0 to 200 ° C. 2. The method for heat treating a fiber structure according to claim 1, wherein the fiber structure contains a polyester fiber.