JP2922875B2 - Method for stabilizing form of textile product and apparatus used therefor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for stabilizing the form of textiles and an apparatus used for the method.

[0002]

2. Description of the Related Art Conventionally, in order to improve the dimensional stability of textile products, a heat setting treatment using steam has been performed in the finishing process. Among them, cellulose fibers (cotton, rayon, hemp, etc.) have been used. Textile products mainly composed of are especially easy to wrinkle and lose their shape, so not only improve the dimensional stability of these fiber products, but also make it difficult for them to wrinkle and lose their shape when worn or washed. ,
2. Description of the Related Art A special form stabilization process is actively performed to fix (store) the shape of a fiber in advance.

As the above-mentioned form stabilization treatment, there is well known a method in which a chemical such as formalin resin or ammonia is applied to fibers to form cross-links in the molecular arrangement of the fibers to maintain the shape of the fibers. In addition, in the treatment using chemicals as described above, since chemicals are likely to remain in the final product, it is required to reduce the concentration of residual chemicals as much as possible and meet safety standards. In recent years, there have been problems such as safety in the working environment when using chemicals, and labor required for collecting and treating excess chemicals. There have been proposed various methods of performing wet heat treatment using the heat treatment.

[0004]

However, when the above-mentioned steam treatment is adopted, especially when the textile to be treated is in the form of a package (for example, cheese, beam or the like), since the steam is a gas, an initial vacuum is applied. Even if steam is introduced afterwards, it is difficult to sufficiently diffuse the inside of the package, and there is a problem that the processing is partially insufficient.

Further, even if an initial vacuum is applied, it is difficult to completely and instantaneously replace the air remaining in the fibers with water vapor, so that a high-temperature treatment must be performed with the air remaining. The oxygen in the inside oxidizes the cellulosic fibers. Therefore, there is also a problem that discoloration such as yellowing and browning and a decrease in strength and elongation due to embrittlement are likely to occur.

Further, the steam used for the steam treatment is set to a high temperature and a high pressure of, for example, 180 ° C. and 9.3 kgf / cm ² G. Must be released outside the processing tank, which causes a problem that a large energy loss occurs.

[0007] In addition, in order to minimize damage to the fiber due to the high temperature treatment, the cellulose fiber is usually subjected to a refining step to remove impurities in the fiber. In order to perform steam treatment after that, it is necessary to dry the wet textile product once, and after steam treatment, it is subjected to a liquid treatment process such as dyeing again. Pinching is very lossy and unreasonable.

The present invention has been made in view of such circumstances, and has been applied to a fiber product such as a cellulosic fiber requiring a form stabilization treatment without using chemicals or steam.
It is an object of the present invention to provide a morphological stabilization method capable of imparting excellent morphological stability by liquid treatment and an apparatus used for the method.

[0009]

In order to achieve the above object, the present invention provides a method for performing a form stabilization treatment on a fiber product mainly composed of cellulose fibers, wherein the fiber product is placed in a treatment tank. The first gist of the present invention is a method for stabilizing the form of a textile product in which the heat treatment is performed by contacting with hot water at 140 to 220 ° C. in a treatment tank.

[0010] The present invention is also an apparatus for use in performing a form stabilization treatment on a fiber product mainly composed of cellulose fibers, comprising: a treatment tank capable of loading the fiber product;
A textile product comprising: a preparation tank for preparing hot water at 40 to 220 ° C .; a supply unit for supplying hot water from the preparation tank to the treatment tank; and a collection unit for collecting hot water from the treatment tank to the preparation tank. The second aspect of the present invention is a second aspect of the present invention.

That is, the present invention imparts shape stability by bringing hot water in a predetermined temperature range into contact with a fiber product mainly composed of cellulose fibers. Since the hot water is a liquid, it can be agitated or forcedly circulated, and can be sufficiently diffused into the interior of the fiber product, so that there is no processing unevenness unlike the related art. . And since there is no need to dry after the refining step and hot water can be used repeatedly, there is an advantage that there is no loss or energy loss between steps. Moreover, in the temperature range of the hot water used in the present invention, the amount of dissolved oxygen in the hot water is extremely small, so that the fiber product is hardly oxidized by the hot water, and the color, texture, physical properties, etc., of the fiber product are reduced. Is not impaired.

[0012]

Next, an embodiment of the present invention will be described in detail.

First, the fibers targeted by the present invention are fibers mainly made of cellulosic fibers such as cotton, rayon, hemp and the like, for which form stabilization has conventionally been required. In the present invention, the term "mainly" means not only a fiber product consisting of only these fibers, but also a synthetic fiber blended fiber product in which these fibers are used in combination with other fibers.

The form of the textile product to which the present invention is applied may be of any type, and may be, for example, any of roses, filaments, tows, slivers, yarns, woven and knitted fabrics, and nonwoven fabrics. You may. Alternatively, it may be tailored to the shape of the final product, such as a shirt or garment.

[0015] The embodiment of the present invention at the time of processing is as follows:
It is set appropriately according to the form of the fiber product. In other words, roses and the like are filled in a basket inner tank, etc., yarns and the like are packaged together in a skein, cheese, cone, and the like. Can be processed. In addition, yarns, woven or knitted fabrics, etc. can be treated in a hanging manner. The yarn can be treated in a knit-denit mode, and a product such as a shirt can be treated in a hanging state or in a state where the product is stretched flat and laminated. The textile product can be processed not only in a free state but also in a pressed state or a tension set state.

Next, an embodiment will be described.

[0017]

FIG. 1 shows an embodiment of a form stabilizing apparatus according to the present invention. In the figure, reference numeral 1 denotes a vertical closed type processing tank in which a fiber product 2 in which yarns mainly composed of cellulose fibers are packaged in a cheese-like shape is stacked in a multi-stage on a cylindrical spindle 3 with a hole. They are loaded while being held (five levels in the figure). A coil-type heat exchanger 4 is provided at the bottom of the processing tank 1, and steam or cooling water is introduced through a pipe 8 branched from a collective pipe 7 of a steam pipe 5 and a cooling water pipe 6. You can do it. In addition, from the collective pipe 7,
Steam or cooling water can be directly introduced into the processing tank 1. The fitting portion between the spindle 3 and the bottom of the processing tank 1 is the same as that of a normal package processing tank, and is omitted in the drawing.

A pressure reducing pipe 11 is connected to the processing tank 1 via a gate valve 9 and communicates with a vacuum pump 10. The pressure reducing pipe 11 is provided with a safety valve 12 and a pressure gauge 13.

On the other hand, reference numeral 14 denotes a vertical closed type preparation tank having a coil-type heat exchanger 15 therein, in which hot water of a predetermined temperature can be prepared. . The steam pipe 5 is communicated with the heat exchanger 15 so that high-pressure steam can be introduced as a heat medium. Further, steam can be directly supplied into the preparation tank 14 via a pipe branched from the steam pipe 5. And the preparation tank 14
Is provided with a pressure adjusting pipe 18 having a safety valve 16 and a pressure gauge 17 and a liquid level gauge 19.

A hot water supply pipe 20 extending from the bottom of the preparation tank 14 is connected to the bottom of the treatment tank 1 via a circulation pump 21, and hot water is supplied to the spindle 3 holding the textile 2. It is being supplied.

The hot water supplied into the spindle 3 flows between the fibers of the textile 2 from the peripheral wall porosity, and
Flows down from the periphery to the bottom of the processing tank 1 and returns from the bottom of the processing tank 1 into the processing tank 1 via the circulation pump 21. By forcibly circulating the hot water through the circulation path 22, the textile product 2 is uniformly processed to the inside. In addition, 23 is a flow meter. Further, the hot water supply pipe 20 is provided with a temperature control means 24 so as to supply hot water having an appropriate temperature into the treatment tank 1.

Further, reference numeral 25 denotes a hot water recovery pipe, which switches the gate valves 26 and 27 so that the hot water in the processing tank 1 can be recovered in the preparation tank 14 again after the processing is completed. ing.

The inside of the preparation tank 14 and the inside of the processing tank 1 can communicate with each other through a pipe 28. This is used when it is necessary to eliminate the pressure difference between the two.

Using the above apparatus, the form stabilization treatment of the textile 2 can be performed, for example, as follows.
That is, first, the fiber product 2 is loaded into the processing tank 1.
At this time, if the fiber product 2 is in a wet state after being subjected to a refining step as a previous step, it can be loaded as it is without drying. Then, the vacuum pump 10 is operated, the gate valve 9 is opened, and the pressure in the processing tank 1 is reduced through the pressure reducing pipe 11. The vacuum is preferably about 10 ^{-1 to} 100 Torr, and particularly preferably the vacuum is about 10 ^{-1 to} 20 Torr. Then, the air in the processing tank 1 is discharged. The reason why the pressure in the treatment tank 1 is reduced is to make it easy for hot water to penetrate into the interior of the textile product 2 in the next step and to prevent discoloration of the textile product 2 due to air oxidation and a decrease in strong elongation.

On the other hand, water is injected into the preparation tank 14 and heated by the heat exchanger 15 to prepare hot water at a predetermined temperature.
Then, as indicated by the arrow, hot water is supplied from the hot water supply pipe 20 into the processing tank 1 and the hot water is forcedly circulated through the circulation path 22 for a predetermined time as described above. Thereby, the hot water repeatedly flows through the interior of the textile product 2, and the textile product 2 is uniformly subjected to the shape stabilization treatment. In order to properly maintain the temperature of the hot water at the time of supply, the temperature of the hot water in the hot water supply pipe 20 is measured and transmitted to the temperature control means 24, and based on the data, the hot water is stored in the heat exchanger 15. The amount of steam introduced is controlled. During the hot water treatment, a temperature control means 29 is provided to maintain the temperature of the hot water in the treatment tank 1 at a predetermined temperature, thereby controlling the amount of steam introduced into the heat exchanger 4. ing.

When the treatment with hot water is completed, the gate valves 26 and 27 are switched, and the hot water in the circulation path 22 is removed.
The hot water is recovered again in the preparation tank 14 via the hot water recovery pipe 25. Immediately after the recovery of the hot water, the inside of the processing tank 1 is depressurized and evacuated. Thereby, the moisture adhering to the textile product 2 evaporates, and the textile product 2 can be rapidly cooled by the heat of vaporization accompanying the evaporation. For this reason, the textile product 2
No damage from excess residual heat.

The fiber product 2 thus obtained is subjected to uniform shape stabilization treatment in all parts, is excellent in wrinkle resistance, shrink resistance, etc., is strong, and has a strong texture. It becomes 2. When the fiber product 2 is a yarn, a twist preventing effect and the like are obtained, and when the fiber product 2 is a knit, a skew preventing effect and the like are obtained.

Moreover, since the obtained textile product 2 is hardly damaged by air oxidation, there is no discoloration such as yellowing or browning, and there is no decrease in strong elongation due to embrittlement, and good appearance and physical properties are obtained. Has been maintained.

In the present invention, the temperature of the hot water to be brought into contact with the textile 2 must be 140 to 220 ° C. That is, when the temperature is lower than 140 ° C., the shape stabilizing effect on the fiber product 2 becomes insufficient, and the amount of dissolved oxygen contained in the hot water increases, so that an oxidizing effect on the fiber is likely to occur. Conversely, when the temperature exceeds 220 ° C,
The fiber product 2 is damaged by heat, and the strong elongation of the fiber is impaired, which is not practical.

The time for bringing the hot water into contact with the textile 2 is appropriately set depending on the temperature of the hot water, the form and amount of the textile 2 and the required degree of form stabilization.
It is preferable to set it for 2 to 20 minutes, especially about 5 to 10 minutes.

Further, in the present invention, the fiber product 2 from which impurities have been removed in advance in the refining step may be loaded into the processing tank 1, or the unrefined fiber product 2 may be directly loaded into the processing tank 1. After loading, supplying a processing liquid for refining into the processing tank 1 and performing refining processing, the above-described series of form stabilization processing may be continuously performed.

In the above example, the pressure in the treatment tank 1 in which the fiber product 2 is loaded is reduced before the heat treatment with hot water, but this is not always necessary. However, in order to perform the treatment uniformly in a shorter time and to effectively prevent the fiber from being oxidized, it is preferable to perform the above-described reduced pressure.

Further, in the above example, the textile product 2 is rapidly cooled by the heat of vaporization by evacuating the processing tank 1 and then reducing the pressure after the heat treatment. In the tank 1, a cooling water pipe 6 or a water supply valve 3
Cooling water may be introduced from zero. The cooling water is usually warm water or water of 80 ° C. or less,
Room temperature water at 0 to 30 ° C. is preferably used.

In the present invention, an oxygen scavenger may be added to the hot water used in order to further eliminate the oxidizing effect during the heat treatment.

Further, in order to further shorten the heat treatment time and make the treatment more uniform, a surfactant can be added to increase the permeability of hot water to the fiber product 2.

In the above example, the circulation pump 24 is attached to the outside of the treatment tank 1 to forcibly circulate the hot water. However, depending on the form of the fiber product 2, the hot water is not necessarily forced to circulate. It is not necessary to circulate, and for example, the contact efficiency between the hot water and the fiber product 2 may be increased by stirring the hot water using a pump or a mixer that creates a pulsating flow. Of course, in some cases, the treatment may be performed only by immersing the fiber product 2 in hot water.

Further, in the above example, a preparation tank 14 for preparing hot water is provided separately from the processing tank 1.
In addition, by collecting hot water after the treatment, thermal energy loss is eliminated and time loss is eliminated, but the preparation tank 14 is not always necessary.
That is, hot water may be introduced into the processing tank 1 from a separately provided hot water supply source, or the water supplied into the processing tank 1 may be heated to a predetermined temperature and heat-treated. Thereafter, the hot water may be rapidly discharged by the high-temperature drainage means.

In the above example, the heat exchangers 4 and 15 are provided in the treatment tank 1 and the preparation tank 14 in order to keep the temperature of the hot water constant. However, the heating means is not limited to this. Anything is fine.

In the above example, the processing tank 1 is of a vertical type, but the processing tank 1 may be of a horizontal type.
The method and mode of loading the fiber product 2 into the processing tank 1 are not limited to those described above, and can be set as appropriate.

By using the apparatus shown in FIG. 1, a cotton yarn (30/2 count) wound in a cheese shape is treated under the following conditions, then circular knitted, and subjected to a relaxation treatment.
A knitted fabric subjected to shape stabilization treatment was obtained. This one is
The linearity of the yarn was memorized in shape, and the volume was increased and the stiffness increased compared to the untreated yarn, even though the knit frequency was not increased. Further, the yarn after the heat treatment did not undergo discoloration due to heat, and no decrease in the high elongation was observed.

Further, a knitted fabric obtained by circularly knitting the same yarn as above was heat-treated under the conditions shown in Table 1 below. Other conditions were the same as in the above example. Then, the obtained knitted fabric was unwound, returned to a yarn, immersed in water, pulled up and dried. The yarn thus obtained (sample No.
In 1) to 4), it was observed whether or not a loop shape due to knitting was stored, and the visual evaluation was made according to the following four grades.

[Shape stability] A clear loop shape is stored. ◎ A loop shape is stored temporarily. ○ The loop rise is ambiguous but wavy. ×

Further, the discoloration degree of the yarn after the treatment was observed and visually evaluated according to the following four grades. [Degree of discoloration] No discoloration at all ◎◎ Almost no discoloration ・ ・ ・ ○ Discoloration is vaguely understood △ △ Discoloration is clearly seen ××

Further, the strength and elongation of the treated yarn were measured and compared with the strength and elongation of the untreated yarn to evaluate the following four grades. [Strength of elongation] Not or hardly reduced… ◎ Slightly reduced, but no problem in practical use ○ ○ Unfavorable in practical use △ △ Decreased significantly and cannot be put to practical use ×

The results are shown in Table 1 below.

[0046]

[Table 1]

[0047]

As described above, the method of the present invention imparts form stability by bringing hot water in a predetermined temperature range into contact with a fiber product mainly composed of cellulose fibers. is there. Therefore, by stirring or forcibly circulating this, it can be sufficiently diffused into the interior of the fiber product, and a very uniform treatment can be realized. And since there is no need to dry after the refining process and hot water can be used repeatedly,
There is an advantage that there is no loss or energy loss between processes. Moreover, in the temperature range of the hot water used in the present invention,
Since the amount of dissolved oxygen in the hot water is extremely small, the fiber product is hardly oxidized by the hot water, and the color, texture and physical properties of the fiber product are not impaired.

According to the apparatus of the present invention, the above method can be implemented simply and efficiently.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an embodiment of the apparatus of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Processing tank 2 Textile product 14 Preparation tank 20 Hot water supply pipe 21 Circulation pump 25 Hot water recovery pipe

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ identification code FI // D06M 101: 06 (58) Fields investigated (Int. Cl. ⁶ , DB name) D06B 5/20 D06B 23/00 D06B 23 / 20 D06C 29/00 D06M 11/84 D06M 101: 06

Claims (13)

(57) [Claims] 1. A method for performing a form stabilization treatment on a fiber product mainly composed of cellulosic fibers, wherein the fiber product is loaded into a processing tank, and heated at 140 to 220 ° C. in the processing tank. A method for stabilizing the form of a fiber product, wherein a heat treatment is performed by contacting the fiber product. 2. The method for stabilizing the form of a fiber product according to claim 1, wherein the treatment is performed while giving a stirring operation to the hot water. 3. The method according to claim 1, wherein the treatment is carried out while forcibly circulating the hot water. 4. The hot water is prepared in a preparation tank different from the processing tank, hot water is supplied from the preparation tank to the processing tank, and after the processing is completed, the hot water is recovered in the preparation tank again. The method for stabilizing the form of a textile product according to any one of claims 1 to 3. 5. A process for stabilizing the form of a textile product according to claim 4, wherein the inside of the treatment tank is previously evacuated to a pressure of 10 ^{-1 to} 100 Torr before supplying hot water from the preparation tank to the treatment tank. Method. 6. After the treatment is completed, the hot water in the treatment tank is drained or collected, and then the inside of the treatment tank is immediately depressurized and evacuated to rapidly cool the textile product. The method for stabilizing the form of a fiber product according to any one of claims 1 to 5. 7. After the treatment is completed, the hot water in the treatment tank is drained or collected, and then cooling water of 0 to 80 ° C. is immediately introduced into the treatment tank to rapidly cool the textile product. The method for stabilizing the form of a textile according to any one of claims 1 to 5. 8. The method for stabilizing the form of a fiber product according to any one of claims 1 to 7, wherein a refining process is performed on the fiber product in a processing tank before starting the processing. 9. An apparatus used for performing a form stabilization treatment on a fiber product mainly composed of cellulose fibers,
A treatment tank capable of loading the above-mentioned fiber product, 140 to 220 ° C.
A preparation tank for preparing hot water, a supply means for supplying hot water from the preparation tank to the treatment tank, and a collection means for collecting hot water from the treatment tank to the preparation tank. Product form stabilization processing equipment. 10. The apparatus for stabilizing the form of a textile product according to claim 9, wherein a stirring means for hot water is provided in the processing tank. 11. The apparatus for stabilizing the form of a textile product according to claim 9, wherein a forced circulation means for hot water is provided outside the processing tank. 12. The apparatus for stabilizing form of a textile product according to claim 9, further comprising a pressure reducing means for reducing the pressure in the processing tank to a predetermined degree of vacuum. 13. The apparatus for stabilizing form of a textile product according to claim 9, further comprising cooling water supply means for supplying cooling water to the processing tank.