JP2724293B2 - 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 a fiber product and an apparatus used therefor.

[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. A method of applying moisture to a textile product loaded in the closed container by a water adding means provided in the closed container, and discharging air in the closed container to reduce the pressure. A step of supplying superheated steam to the depressurized closed container, and a step of heat setting the fiber product at a predetermined temperature for a predetermined time by the superheated steam supplied to the closed container. A first aspect of the present invention is an apparatus used for performing a form stabilization treatment on a fiber product mainly composed of at least one of a cellulose fiber and an animal fiber, wherein the fiber product is A sealed container to be filled, means for providing moisture to the textile product provided in the closed container, pressure reducing means for reducing the pressure in the closed container to a predetermined degree of vacuum, and superheated steam in the closed container. Form stabilization of a fiber product comprising: a steam supply means for supplying; a pressure control means for controlling the inside of the closed vessel to a predetermined pressure; and a processing control means for controlling the superheated steam to be maintained at a predetermined temperature for a predetermined time. A second aspect of the present invention is a chemical treatment apparatus.

[0007]

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

First, the fibers to which the present invention is directed 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 and the like. 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.

[0009] The form of the textile product to which the present invention is applied may be of any form, but among them, there is a form in which there is a relatively gap between the fibers and water is easily applied. An object, for example, a skein-like thread, an annular fabric, a final product tailored to a shape such as a shirt, or the like is suitable.

Further, as the closed container to which the present invention is applied, an appropriate container is selected according to the form of the above-mentioned various fiber products, and is not particularly limited. For example, a horizontal closed container or a vertical closed container may be used. Then, the loading method and loading mode of the fiber product are also appropriately set.

[0011] In the process of the present invention,
Although it is appropriately set according to the form of the fiber product, it is a preferred embodiment that the skein-like yarn, the annular fabric, the final product, and the like are processed while being suspended in a free state.

Next, an example of a processing apparatus used in the present invention is shown in FIG.

In FIG. 1, reference numeral 1 denotes a horizontal closed container, in which a fiber product 2 (in the figure, an annular cloth hung on a rod 2a arranged at a predetermined interval) 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 includes a pressure reducing valve 7, a flow meter 8, a pressure gauge 9, a thermometer 10, and a heat exchanger 50, and communicates with the inside of the closed vessel 1 through the communication pipe 5. A heat medium such as high-pressure steam is introduced into the heat exchanger 50 from a heat medium supply pipe 51.

In the vicinity of the ceiling in the closed container 1, spray nozzles 61 are provided at predetermined intervals so as to spray water evenly on the loaded textile products 2. Water is being supplied.

The sealed container 1 has a pressure gauge 1
2, a safety valve 13 and a stirring device 14 are provided, and three thermometers 15 are provided at predetermined intervals on the bottom side. In addition, a discharge pipe 22 for discharging air in the closed container 1 is communicated with the center of the bottom of the closed container 1.

Using the above-described apparatus, the form stabilization processing can be performed, for example, as follows. That is, first,
As shown in FIG. 1, after the textile 2 is loaded into the closed container 1, water is sprayed from the water supply pipe 60 to the spray nozzle 61.
And water is applied to the loaded fiber product 2 by spraying water from above. This is because the fiber product is kept in a certain water-containing state before the heat setting by the superheated steam, thereby causing a molecular bond between the fiber and the moisture during the heat setting by the superheated steam. Recrystallize while relaxing the strain stress inside,
By guiding the inside of the fiber to the optimum condition for shape stabilization, the treatment is performed uniformly without excess or deficiency of moisture.

The rate of imparting moisture to the fiber product 2 is appropriately set, but is preferably set to generally 10 to 20% by weight. When the water content is less than the above range, the water tends to be insufficient during the treatment with the superheated steam and the shape stabilization tends to be insufficient. Conversely, when the water content is larger than the above range, the liquid is removed in the process after the treatment This is because a drying step is required, which takes time.

Next, the vacuum pump 3 is operated, and the on-off valve 23 of the vacuum pipe 4 is opened to depressurize the inside of the closed vessel 1 and discharge the air in the closed vessel 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 heating is performed by the heat exchanger 50 so that the superheated steam is Supply. At this time, the superheated steam is usually at a temperature of 120 to 200 ° C. and a pressure of 2.0 to 16.
It is preferable to set it to 0 kg / cm ² . That is, if the temperature is lower than 120 ° C., the effect of stabilizing the shape of the fiber product 2 becomes insufficient,
This is because, if the ratio exceeds 1, the fiber product 2 is damaged by heat and the elongation and strength of the fiber are impaired. Note that the pressure is necessarily determined by the temperature of the superheated steam.

In order to control the temperature of the superheated steam within a predetermined range, the temperature is measured at the outlet side of the heat exchanger 50, transmitted to the temperature control means 53, and based on the data,
The opening degree of the on-off valve 52 provided in the heat medium supply pipe 51 is controlled. Further, in order to keep the superheated steam 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 opening degree of the on-off valve 24 is controlled by the pressure control means 40. I try to control.

Further, in order to bring superheated steam into uniform contact with the textile product 2 in the closed container 1, the temperature is measured with the thermometer 15 at three points in the closed container 1 over time, and stirring is performed if necessary. A steam stirring operation by the device 14 is provided.

As described above, by performing the heat treatment with the superheated steam on the textile product 2 for a predetermined time, 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.

In this way, the treatment of the textile 2 is completed, and the textile 2 is taken out of the closed container 1.

In the above-mentioned apparatus, the superheated steam is introduced into the closed vessel 1 and is simply brought into contact with the textile product 2. However, as shown in FIG. 2, the discharge pipe 22 and the communication pipe 5 are connected to each other. By operating the blower 32, the superheated steam introduced into the closed vessel 1 is discharged from the bottom side of the closed vessel 1 by the discharge pipe 22.
It is also possible to make the textile product 2 forcibly flow superheated steam by repeating the process of taking out through the container and feeding it in from the ceiling side of the closed container 1. The other parts of this device are shown in FIG.
The same parts are denoted by the same reference numerals, and description thereof is omitted.

Further, as shown in FIG. 3, a pipe 33 for forced circulation of steam shown in FIG. 2 is used, and air is supplied through a pipe 56 to a gas suction side of a blower 32 provided in the pipe 33. The air may be supplied and heated by a heat exchanger 55 provided on the gas delivery side of the blower 32 so that hot air can be supplied. The hot air may be used to preheat the textile 2 prior to the heat setting by the superheated steam, or to dry the textile 2 when the textile 2 is wet after the heat setting. May be continuously performed.

It is to be noted that dew condensation easily occurs on the inner wall of the sealed container 1, especially on the ceiling and around the piping of the spray nozzle 61.
There is a possibility that the water droplets fall and excessive moisture is supplied to the textile product 2. Therefore, in order to prevent this, in the apparatus shown in FIGS. 1 to 3, a heating medium heating device is provided on the upper surface of the closed container 1 so that the vicinity of the ceiling of the closed container 1 is kept at a high temperature so that dew condensation does not occur. You may.

[0027]

As described above, according to the present invention, a certain amount of moisture is imparted to a fiber product loaded in a closed container in the loaded state, and then the pressure in the closed container is reduced by reducing the pressure in the closed container. In the next step, the steam easily penetrates into the interior of the textile product and prevents discoloration and embrittlement of the textile product by air oxidation. Only heat set. According to this method, excellent morphological stabilization can be realized by the action of moisture and superheated steam contained in the textile product. And other problems can be avoided. 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.

FIG. 3 is a partial configuration diagram of still 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 14 Stirrer 40 Pressure control means 60 Water supply piping 61 Spray nozzle

Claims (9)

(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 a closed container, wherein the fiber product is loaded in the closed container. Provided in a closed container
The step of applying moisture by the moisture applying means, the step of discharging air in the closed container to reduce the pressure, the step of supplying superheated steam to the reduced pressure of the closed container, and the step of A method for stabilizing the form of a fiber product, comprising a step of heat setting the fiber product at a predetermined temperature for a predetermined time with the supplied superheated steam. 2. The skein-like yarn or the annular fabric, wherein the textile product is
And one of the final products tailored to the specified shape.
The method for stabilizing the form of a textile product according to claim 1. 3. The method according to claim 1, wherein the water given to the fiber product is a fiber.
Claim 1 or Claim 2 wherein the content is set at 10 to 20% by weight of the product.
Is a method for stabilizing the form of a textile product according to 2. The method according to claim 4, wherein said superheated steam, claim and so as to circulate while being forced flow through the fiber product 1-3 Neu
A method for stabilizing the form of a textile product according to any one of the preceding claims . 5. 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; Means for providing moisture to the textile product provided in the container, pressure reducing means for reducing the pressure in the closed container to a predetermined degree of vacuum, steam supply means for supplying superheated steam to the closed container, An apparatus for stabilizing the form of a textile product, comprising: pressure control means for controlling the inside of the container to a predetermined pressure; and processing control means for controlling the superheated steam to be maintained at a predetermined temperature for a predetermined time. 6. The fiber product is a skein-like yarn or an annular fabric.
And one of the final products tailored to the specified shape.
An apparatus for stabilizing the form of a textile product according to claim 5. 7. The method according to claim 7, wherein the moisture imparted to the fiber product is a fiber.
The amount is set at 10 to 20% by weight of the product.
7. The apparatus for stabilizing form of a textile product according to item 6. 8. The textile product form stabilizing apparatus according to claim 5, wherein a fan for steam stirring is provided in the closed container. 9. outside the closed container, any one of claims 5-8 blower for forced circulation steam is provided
Textile products in the form stabilizing treatment according to.