JP2812899B2 - 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 process using steam has been performed in the finishing process, but recently, cotton products, wool products, etc.
For textile products that are easily wrinkled or deformed, not only improve dimensional stability, but also actively apply special form stabilization treatment so that they are not easily wrinkled by wearing or washing and do not deform. The shape of the fiber is fixed (stored) 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.

[0004]

However, in the treatment using a chemical as described above, since the chemical is likely to remain in the final product, it is required to reduce the concentration of the residual chemical as much as possible and to meet safety standards. A great deal of labor is required for its management. In addition, there are problems in the safety of the working environment when using chemicals, and in the collection and processing of surplus chemicals. For this reason,
There is a strong demand for the establishment of a technology for performing form stabilization treatment using only physical and mechanical means such as moisture, heat, and pressure without using chemicals. However, a technology that can respond to this has not yet been proposed. That is the fact.

The present invention has been made in view of such circumstances, and supplies steam to a fiber product such as a cellulosic fiber requiring a form stabilization treatment under a certain condition without using a chemical. It is an object of the present invention to provide a morphological stabilization method capable of imparting excellent morphological stability by itself and a device used therefor.

[0006]

In order to achieve the above object, the present invention provides a form-stabilizing treatment by loading a fiber product mainly composed of at least one of cellulosic fiber and animal fiber in a closed container. An air discharging step of depressurizing the inside of the closed container loaded with the textile product to a degree of vacuum of 10 Torr or less;
A high-pressure saturated steam of 0 to 200 ° C. and a pressure of 2.0 to 16.0 kg / cm ² is removed by removing a mist contained in the steam by a mist separator to obtain a dryness of 95% or more.
%, And a step of heat-setting the fiber product at a predetermined temperature for a predetermined time with the high-pressure saturated steam supplied into the closed container as a first method. An apparatus used for performing a shape stabilization treatment on a fiber product mainly composed of at least one of a cellulosic fiber and an animal fiber, the closed container in which the fiber product is loaded, and the closed container. Decompression means for reducing the inside pressure to a predetermined degree of vacuum, steam supply means for supplying high-pressure saturated steam into the closed vessel, mist separator for removing mist from the high-pressure saturated steam supplied into the closed vessel, A textile product comprising pressure control means for controlling the inside of a closed vessel to a predetermined pressure, and processing control means for controlling the high-pressure saturated steam to be maintained at a predetermined temperature for a predetermined time. The stabilization device and the second aspect.

[0007]

That is, in the present invention, when treating a textile in a closed container, the inside of the closed container is first depressurized to eliminate air in the textile, and in the next step, steam easily penetrates into the interior of the textile. At the same time, discoloration and embrittlement of textiles due to air oxidation are prevented, and high-pressure saturated steam adjusted to a predetermined dryness is supplied by removing mist with a mist separator. It is intended to be set. According to this method, by the action of high-pressure saturated steam that is strictly set,
Since excellent shape stabilization can be realized, there is no need to use a chemical as in the conventional case, and it is possible to avoid a problem such as a chemical remaining in a final product.

Next, the present invention will be described in detail.

First, the fibers targeted by the present invention are fibers that have been required to have a stable form, and specifically, cellulosic fibers such as cotton, rayon and hemp, and wool and silk. Animal fiber. And, not only fiber products composed of only these fibers, but also synthetic fiber blended fiber products using these fibers in combination with other fibers.

[0010] The form of the fiber product to which the present invention is applied is not limited, and may be any of yarn, woven or knitted fabric, and non-woven fabric. Alternatively, it may be tailored to the shape of the final product such as a shirt.

[0011] In the process of the present invention,
It is set appropriately according to the form of the fiber product. For example, when the fiber product is a yarn, the yarn can be packaged in a skein shape, a cheese shape, a cone shape, or the like, and processed. Also, woven or knitted fabric, non-woven fabric, etc. can be wound around a beam or the like and packaged for processing. In addition, about a thread | yarn, it can also process in the mode of a knit denit. Further, products such as shirts can be processed in a hanging state or in a state of being 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.

FIG. 1 shows an embodiment of a form stabilizing apparatus according to the present invention. In the figure, 1 is a horizontal closed container,
Inside, a packaged fiber product 2 (a fabric wound around the beam core 30 in the figure) is loaded. Reference numeral 3 denotes a vacuum pump, which communicates with the inside of the sealed container 1 via a vacuum pipe 4 and a communication pipe 5. Reference numeral 6 denotes a steam supply pipe, which is provided with a pressure reducing valve 7, a flow meter 8, a pressure gauge 9, and a thermometer 10, and communicates with the inside of the closed vessel 1 through the communication pipe 5.

The communication pipe 5 is provided with a mist separator 11 for removing mist from the high-pressure saturated steam supplied into the closed vessel 1, and a downstream of the mist separator 11 in the closed vessel 1. Piping 20 connected to beam core 30
Is connected to a branch pipe 21 branching from the branch.

A pressure gauge 12, a pressure gauge 12,
A safety valve 13 and a stirring device 14 are provided,
On the bottom side, three thermometers 15 are provided at predetermined intervals. Reference numeral 31 denotes a water drop prevention plate for preventing water droplets condensed on the ceiling of the closed container 1 from falling and supplying excessive moisture to the fiber product 2, and is a metal having a small heat capacity (for example, aluminum or the like). ).

Further, at the center of the bottom of the closed container 1,
An open pipe 22 for opening the inside of the closed vessel 1 to the atmosphere is connected to the closed vessel 1.

Using the above-described apparatus, the form stabilization treatment of the fiber product 2 can be performed, for example, as follows.
That is, first, the textile product 2 is loaded into the closed container 1,
The vacuum pump 3 is operated and the on-off valve 23 of the vacuum pipe 4 is opened to reduce the pressure inside the sealed container 1 to 10 Torr or less, preferably 5 Torr or less, and discharge the air in the sealed container 1. The purpose of discharging the air in the closed container 1 in this manner is to make it easy for steam to penetrate into the interior of the textile product 2 in the next step and to prevent discoloration of the textile product and a decrease in elongation due to air oxidation. .

Next, the vacuum pipe 4 is closed, the open / close valve 24 of the steam supply pipe 6 and the open / close valve 25 of the communication pipe 5 are opened, and high-pressure saturated steam is supplied into the closed vessel 1. At this time, the high-pressure saturated steam has a temperature of 120 to 200 ° C. and a pressure of 2.
It is necessary to set the pressure to 0 to 16.0 kg / cm ² , and to adjust the dryness to 95% to 100% to supply. That is, if the temperature is lower than 120 ° C., the morphological stabilizing effect on the fiber product 2 becomes insufficient. If the temperature is higher than 200 ° C., the fiber product 2 is damaged by heat and the strong elongation of the fiber decreases. Because it will be damaged. Note that the above pressure is necessarily determined by the temperature of the high-pressure saturated steam.

The reason why the dryness of the high-pressure saturated steam is set as described above is that the morphological stabilizing effect on the textile product 2 is theoretically considered to be most effective at a dryness of 100%. If the dryness is less than 95%, a large amount of water adheres to the fiber product 2 and the shape stabilization becomes insufficient, and in addition, a liquid removal and drying step is required in the post-treatment step. Therefore, the dryness of the high-pressure saturated steam is 98% or more and 100% in the above range.
It is particularly preferable to set the following.

In order to keep the high-pressure saturated vapor at a constant pressure and a constant temperature in the closed vessel 1, the pressure in the closed vessel 1 is constantly measured, and based on the value, the pressure control means 40 controls the opening / closing valve 24. The opening degree is controlled. Further, in order to make the dryness of the high-pressure saturated steam close to 100% and not to exceed 100%, the high-pressure saturated steam is separated from the high-pressure saturated steam by the mist separator 11 on the near side where the high-pressure saturated steam is introduced into the closed vessel 1. Moisture (mist)
Is to be removed.

Further, in order to bring the high-pressure saturated vapor into uniform contact with the textile 2 in the closed container 1, the temperature is measured with the thermometer 15 at three points in the closed container 1 over time.
A steam stirring operation by the stirring device 14 is provided as needed.

In order to eliminate the air in the closed vessel 1 as much as possible, in this apparatus, the open / close valve 26 of the open pipe 22 is opened while supplying high-pressure saturated steam, so that the inside of the closed vessel 1 can be properly maintained. The processing can be performed while controlling the processing temperature and the processing pressure.

As described above, by performing the heat treatment with the high-pressure saturated steam for a predetermined time on the textile product 2, excellent morphological stability can be imparted. The above-mentioned processing time is usually set to 2 to 20 minutes, depending on the type, form, volume and the like of the textile product 2.

The textile product 2 thus treated
Is taken out of the closed container 1 and subjected to the next step.
In addition, before taking out the textile product 2 from the closed container 1, the inside of the closed container 1 is decompressed to evaporate the moisture given to the textile product 2, to take away heat of vaporization accompanying the evaporation, and to dry the textile product 2. And cooling may be performed all at once. By doing so, the fiber product 2 can be taken out in a dried and cooled state, and therefore, the handling is easy.

By the way, using the above-mentioned apparatus, a cotton yarn (30/2 count) wound in a corn 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. [Treatment conditions] Degree of vacuum in pressure reduction step 10 Torr Conditions of high-pressure saturated steam Temperature: 180 ° C Pressure: 10 kg / cm ² Dryness: 100% Treatment time 10 minutes

On the other hand, 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 above. Then, the obtained knitted fabric was unwound, returned to a yarn, immersed in water, pulled up and dried. The yarn thus obtained (sample Nos. 1 to
In 8), it was observed whether or not the loop shape by knitting was memorized, and the visual evaluation was made according to the following four grades.

A clear loop shape is stored ◎ A loop shape is stored tentatively ○ The rising of the loop 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. No discoloration at all ... ◎ Almost no discoloration ... ○ Discoloration is vaguely understood… △ Discoloration is clearly seen… ×

Furthermore, 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. Not at all or almost not reduced ◎ ◎ Slightly reduced but no problem in practical use ○ Unfavorable in practical use △ △ Decrease significantly and cannot be put to practical use ×

The results are shown in Table 1 below.

[0030]

[Table 1]

In the above apparatus, the mist separator 11 is provided in order to make the high-pressure saturated steam dryness close to 100%. Thereby, only the mist is physically removed from the high-pressure saturated steam, and the dryness does not exceed 100%.

In the above apparatus, high-pressure saturated steam is introduced into the ceiling of the sealed vessel 1 through the communication pipe 5, but by switching the on-off valves 25 and 27,
High-pressure saturated steam may be introduced into the beam core 30 through the branch pipe 21, and the high-pressure saturated steam may be supplied to the inside of the textile 2 by ejecting the steam from the perforations of the beam core 30.

Further, in the above-mentioned apparatus, high-pressure saturated steam is introduced into the closed vessel 1 so as to simply come into contact with the textile product 2, but the open pipe 22 and the pipe 20 are connected as shown in FIG. , A pipe 33 provided with a blower 32,
By operating the blower 32, the high-pressure saturated steam introduced into the closed vessel 1 is repeatedly taken out from the bottom side of the closed vessel 1 via the open pipe 22 and sent into the beam core 30, and the textile product is repeated. The high-pressure saturated steam may be forced to flow through the inside and outside of the fuel cell 2. The other parts of this apparatus are the same as those of the apparatus of FIG. 1, and the same parts are denoted by the same reference numerals and description thereof will be omitted.

It is to be noted that dew condensation is likely to occur on the inner wall of the closed container 1, and there is a possibility that water drops may fall and excessive moisture may be supplied to the fiber product 2. To prevent this, the apparatus of the above embodiment is used. Provided a water drop prevention plate 31, but instead of this, a heat medium heating device is provided on the upper surface of the closed vessel 1,
The ceiling of the sealed container 1 may be kept at a high temperature so that dew condensation does not occur.

In the apparatus shown in FIG. 1 and FIG.
Is a horizontal type, but the closed container 1 may be a vertical type. The method and mode of loading the textile product 2 into the closed container 1 are not limited to those described above, and can be appropriately set.

[0036]

As described above, according to the present invention, when treating textiles in a closed container, first, the inside of the closed container is depressurized to eliminate air in the textiles, and in the next step, steam is generated inside the textiles. To prevent discoloration and embrittlement of textiles due to air oxidation, and then supply high-pressure saturated steam adjusted to a predetermined dryness by removing mist with a mist separator, and then to a predetermined temperature. ,
The heat setting is performed only for a predetermined time. According to this method, excellent morphological stabilization can be achieved by the action of high-pressure saturated steam under strict conditions, so that there is no need to use chemicals as in the past, and chemicals remain in the final product. Problem can be avoided. And
According to the apparatus of the present invention, the above method can be performed simply and efficiently.

[Brief description of the drawings]

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

FIG. 2 is a configuration diagram of another embodiment of the apparatus of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Closed container 2 Textile product 3 Vacuum pump 4 Vacuum piping 6 Steam supply piping 11 Mist separator 14 Stirrer 22 Open piping 40 Pressure control means

Claims (6)

(57) [Claims] 1. A method for carrying out a form stabilization treatment by loading a fiber product mainly composed of at least one of a cellulosic fiber and an animal fiber into an airtight container, wherein the fiber container is loaded with the fiber product. An air discharging step of reducing the pressure to a degree of vacuum of 10 Torr or less;
A high-pressure saturated steam of 0 to 200 ° C. and a pressure of 2.0 to 16.0 kg / cm ² is subjected to mist separation by mist contained in the steam.
100 dryness of 95% or more by removing the data
% , And a step of heat-setting the textile at a predetermined temperature for a predetermined time with the high-pressure saturated steam supplied into the closed container, and stabilizing the form of the textile. Processing method. 2. The method for stabilizing the form of a textile product according to claim 1, wherein the high-pressure saturated steam is circulated while forcibly flowing through the textile product. 3. The method according to claim 1, wherein the high-pressure saturated steam is supplied while a part of the closed container is open to the atmosphere, and the inside of the closed container is heat-set while being controlled at a predetermined temperature and a predetermined pressure. Form stabilization treatment method for textile products. 4. An apparatus used for performing a form stabilization treatment on a fiber product mainly composed of at least one of a cellulosic fiber and an animal fiber, comprising: a sealed container into which the fiber product is loaded; Decompression means for reducing the pressure in the vessel to a predetermined degree of vacuum, steam supply means for supplying high-pressure saturated steam to the closed vessel, and a mist separator for removing mist from the high-pressure saturated steam supplied to the closed vessel,
Pressure control means for controlling the inside of the closed vessel to a predetermined pressure,
And a processing control means for controlling the high-pressure saturated steam to be maintained at a predetermined temperature for a predetermined time. 5. A said closed vessel, form stabilizing treatment apparatus of a fiber product of claim 4 Symbol mounting fan for agitating steam is provided. Wherein the outside the closed container, the form stabilizing treatment apparatus of a fiber product of claim 4 Symbol mounting blower for forcibly circulating the steam are provided.