JP3853915B2 - Steam heat set device for fabrics and fabric products - Google Patents

Description

【図面の簡単な説明】
【図１】従来の蒸熱セット装置の一例を示す配管システム図
【図２】本発明の蒸熱セット装置の一例を示す配管システム図
【符号の説明】
１２ 被処理品
１４ 保持部材（載置台）
１６ 圧力処理容器
２１ 圧力調節弁
２４ 蒸気排出配管
２６ 外部加熱手段
２７ 誘導加熱電源
２８ 誘導加熱コイル
３０ 制御器（コントローラ）
３１ 蒸気排出量調節弁
３５ 給水配管[0001]
[Industrial application fields]
The present invention relates to a steam heat setting apparatus and steam heat setting method for performing heat treatment with steam, that is, steam heat treatment, for shape setting (shape fixing) such as drawn pleats in fabrics and fabric products.
[0002]
[Prior art]
As a shape setting method such as squeezing pleats for fabrics and yarns, shape setting by steaming (hereinafter referred to as “steaming heat setting”) is performed using steam (hereinafter simply referred to as “steam”) not using chemical treatment. There are methods (see JP 59-130357 A, JP 5-33259 A, etc.).
[0003]
Conventionally, a steaming set device as shown in FIG. 1 is used as a steaming heat treatment device.
[0004]
The steam heat setting device is composed of a pressure processing vessel 16 in which a holding member 14 for holding the heat-treated product 12 to be steamed is provided, and a boiler 18. The boiler 18 is provided with a primary pressure control valve 23, and a steam inlet pipe 22 having a steam inlet opening / closing valve 20 is arranged between the boiler 18 and the bottom of the pressure processing vessel 16, A steam discharge pipe 24 having a secondary side pressure control valve 21 is arranged on the upper part of the pressure processing container 16.
[0005]
In this steam heat setting apparatus, steam heat treatment of the steam heat treated product (hereinafter sometimes referred to as “processed product”) 12 was performed as follows.
[0006]
The article 12 to be processed is placed on the placing table 14. The pressurized steam from the boiler 18 is fed into the pressure processing vessel 16 through the steam feeding pipe 22 to perform steaming heat treatment. At this time, when the inside of the pressure processing container 16 becomes equal to or higher than the set pressure (set temperature), the secondary side pressure control valve 21 is opened and the set pressure is maintained. The primary pressure control valve 23 has a function of opening when the pressure in the boiler 18 is equal to or higher than the set pressure of the primary pressure control valve 23.
[0007]
In the steam heat treatment, steam heat needs to be uniformly distributed to the fabric or the fabric product.
[0008]
[Problems to be solved by the invention]
However, in the conventional method using the steam heat setting device of the type in which the high-pressure steam supplied from the boiler as described above is fed through the steam feed pipe, stable steam heat setting is performed on the entire product to be processed. It turned out to be difficult.
[0009]
Especially for drawn products that have been tightly squeezed with yarn or rubber to the extent that the dyeing solution to be heat-treated does not soak, or bulk products that have been pressed for pleats, i.e., high-density processed products, steam heat is applied to the interior of the processed products. However, steaming set becomes more difficult.
[0010]
This is considered to be caused by a large temperature difference between the surface side and the center side of the heat-treated product to be steamed stored in the pressure processing vessel.
[0011]
Use steam at a higher temperature to ensure that the steam is distributed to the fiber at the center of the block of the squeezed product that has been tightly squeezed with yarn or rubber to the extent that the dyeing liquid does not penetrate, or pressed products for pleats However, it is not preferable to increase the steam temperature because it causes deterioration of fiber strength.
[0012]
In view of the above, an object of the present invention is to provide a fabric / fabric capable of stably fixing the shape even to a drawn product that has been tightly drawn with a thread or rubber to the extent that the dyeing solution does not soak, or a block product that has been pressed for pleats. An object of the present invention is to provide a steam heat setting apparatus and steam heat setting method for products.
[0013]
[Means for Solving the Problems]
(1) In order to achieve the above object, the steam / heat set device for a fabric / fabric product of the present invention comprises a pressure processing container having a holding member for holding a product to be processed, and at least the bottom side of the pressure processing container. And an external heating means.
[0014]
In the steam heat setting device, it is desirable that the pressure processing container includes a steam discharge amount control valve in addition to the pressure control valve, and it is desirable that the external heating means is an electromagnetic induction heating means.
[0015]
(2) In order to achieve the above object, the steam heat setting method for a fabric / fabric product according to the present invention heats the water supplied into the pressure treatment vessel by an external heating means and vaporizes it, and sets the vapor pressure. It is characterized in that steaming is performed by maintaining the pressure at a set temperature.
[0016]
In the steam heat setting method, it is desirable to hold the set pressure while discharging steam, and it is desirable to use electromagnetic induction heating means as external heating means.
[0017]
[Effects of the Invention]
In the apparatus of the present invention, since the injected water is evaporated by directly heating the pressure processing container by the external heating means, the bottom inner surface of the pressure processing container reaches the boiling point temperature of water.
[0018]
If heating is continued, the pressure control valve opens, the steam is discharged, and a flow of high-pressure steam is generated around the workpiece. Furthermore, preferably, by controlling the steam discharge amount with the steam discharge amount control valve of the pressure processing container, the generation of high-pressure steam is continued even after reaching the set pressure, that is, after reaching the set temperature. A high-pressure steam flow is generated around. For this reason, the article to be treated comes into contact with fresh high-pressure steam (having a large heat capacity) at a constant temperature that is directly or continuously supplied directly from the bottom of the pressure treatment container. Therefore, there is almost no difference (mainly temperature difference) in the processing performance of the high-pressure steam between the central portion and the peripheral portion, and stable heat setting is possible.
[0019]
In other words, the surface of the product to be treated is intermittently or continuously in contact with fresh high-pressure steam having a large heat capacity even for a product in which the treated product is tightly squeezed with thread or rubber to such an extent that the dyeing liquid does not penetrate. The conduction heat can easily reach the inside, and the heat setting at the center can be performed in a short time that is not much different from the surface.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
(1) Hereinafter, an embodiment of the present invention will be described with reference to FIG.
[0021]
The steam heat setting device basically includes a pressure processing container 16 having a holding member 14 for holding the article 12 to be processed and a pressure control valve 21, and at least the bottom of the pressure processing container 16. External heating means 26 to be provided. As a desirable mode, a steam discharge control valve 31 is provided.
[0022]
In the example shown in the figure, the holding member 14 is a porous mounting table so that steam can be easily circulated. However, depending on the type of the article 12 to be processed, the holding member 14 may be a hanging system such as a towel rack or a clothes rack. Good.
[0023]
The external heating means 26 is preferably an electromagnetic induction heating means (hereinafter simply referred to as “induction heating means”). The induction heating means 26 includes an induction heating power source 27 and an induction heating coil 28 connected to the induction heating power source 27. The arrangement of the induction heating coil may be a single spiral or a plurality of induction heating coils arranged concentrically.
[0024]
In FIG. 2, the induction heating coil 28 is provided on the bottom side lower surface of the pressure processing vessel 16, but it may be provided on the bottom side outer periphery of the pressure processing vessel 16. Further, in order to improve the temperature controllability in the pressure processing container 16, in addition to the electromagnetic induction heating means 26 of FIG. 2, an induction heating means having an induction heating coil is provided on the outer periphery above the bottom side of the pressure processing container 16. Can do.
[0025]
Since the induction heating means can be heated (1) in a non-contact manner, the heating efficiency of the pressure processing vessel 16 is high, output control is easy by controlling the amount of current, and (2) the amount of high-pressure steam generated is reduced. High controllability. The external heating means may be a general-purpose combustion heating means or resistance heating means.
A water supply pipe 35 including a water supply valve 34 is connected to the lower side of the pressure processing container 16 of the present embodiment. In addition, a plurality of temperature detectors 29 such as thermocouples (three in the illustrated example) are arranged in the processing container 16. The temperature signal from the temperature detector 29 enters the controller (controller) 30, and the control signal from the controller 30 is input to the induction heating power supply 27 to control the current amount of the induction heating coil 28. Yes.
[0026]
The pressure-resistant specification of the pressure treatment vessel 16 is usually 0.3 to 1.0 MPa, and the material is formed from steel, ferritic stainless steel (for example, SUS430) or the like at least from the viewpoint of induction heating efficiency. It is desirable to do. The main body of the pressure vessel 16 may be inexpensive such as austenitic stainless steel (for example, SUS304, SUS316).
[0027]
(2) Next, a usage form of the steam heat setting device will be described.
[0028]
First, an example is taken of a case where a high-density article to be processed that has been tightly squeezed with a thread or rubber to such an extent that the dyeing liquid does not penetrate is set by steaming.
[0029]
A predetermined amount of water for evaporation is supplied to the bottom of the pressure processing container 16 through the water supply pipe 35, and the article to be processed 12 is placed on the mounting table 14. In this state, the induction heating power supply 27 is turned on and the bottom of the pressure processing vessel 16 is heated by induction heating with the induction heating coil 28 to evaporate water.
[0030]
The inside of the pressure processing container 16 is heated to a set temperature (that is, a set pressure) by induction heating, and the heat treatment is performed on the article 12 by adjusting the heating output and controlling the amount of steam generated. .
[0031]
The conditions of the steaming heat treatment vary depending on the material, thickness and required set strength of the article to be treated, but for a product narrowed to 3 mm in diameter and 20 mm in height with cotton yarn, it is as follows.
[0032]
Polyester fiber: 120-130 ° C. × 5-15 min
Acetate: 110-120 ° C x 5-15 min
Nylon 6: 120-130 ° C. × 5-15 min
Cupra: 140-150 ° C x 5-15min
Cotton: 140-150 ° C x 5-15min
Hemp: 150-160 ° C x 5-15min
Silk: 130-150 ° C x 5-15min
In each of the fibers, steam heat setting is performed in a short time.
[0033]
At this time, pressure control (temperature control) in the pressure processing container 16 is performed as follows.
[0034]
As an initial setting, the controller 30 is input in advance with the heating temperature and the time for holding it in accordance with the material and shape of the product to be processed.
[0035]
At the start of heating, the controller 30 controls the amount of current of the induction heating power supply 27 based on a signal from a temperature detector 29 (for example, a water temperature detector) to reach a set pressure (that is, a set temperature). During that time, steam is continuously generated, and steam discharge from the steam discharge amount control valve 31 and the pressure control valve 21 does not occur.
[0036]
After reaching the set pressure, the opening amount of the steam discharge control valve 31 is controlled by a control signal from the controller 30 to discharge steam at a preset flow rate. As a method of discharging, a general-purpose method such as a method of controlling the amount of electric power from calculation of the calorific value of steam or a method of controlling output from the PID coefficient of the temperature signal can be used.
[0037]
As the steam is discharged, the set pressure (that is, the set temperature) of the pressure processing container decreases. Based on the signal from the temperature detector 29 (for example, a water temperature detector), the output of the induction heating power supply 27 is adjusted. The pressure of the pressure processing container is controlled to a set pressure.
[0038]
When the pressure processing container 16 exceeds the set pressure, the pressure control valve 21 is opened and the pressure processing container is lowered to the set pressure.
[0039]
After the workpiece 12 is kept at the processing temperature for a certain time and the steam heat treatment is completed, the current flowing through the induction heating coil 28 is interrupted by a signal from the controller 30 to lower the temperature in the pressure processing container 16. go. As a method for lowering the temperature, natural cooling may be used. For example, a method may be used in which the pressure is gradually released by the steam discharge control valve 31 and the temperature is lowered relatively quickly by the heat of vaporization of the steam.
[0040]
However, for safety reasons, it is desirable to protect the lid from being accidentally opened so that the inside of the container is lowered to about 100 ° C. and opened when the pressure reaches atmospheric pressure.
[0041]
Further, as described above, the treatment temperature varies depending on the material of the heat treatment material to be steamed, but the tightening strength of the pressure control valve 21 is changed by the actuator (accumulator) 32 by setting the heating temperature in the controller 30. By adjusting the set pressure, the processing temperature can be set easily.
[0042]
For a non-high-density processed product that is loosely twisted in a rope shape, for example, other than a tightly squeezed product, the controller 30 is set so that the steam flow discharged by the steam discharge control valve 31 is zero. And if the output of the external heating means 26 is controlled and the pressure processing container 16 is set to a set pressure (set temperature), it is possible to perform steam heat treatment while suppressing energy consumption.
[0043]
Further, if the temperatures of the surface 12, the middle part, the center part, etc. of the article 12 to be processed are detected by a plurality of temperature detectors 29 arranged, the detection signal is used for the temperature monitoring of the article to be processed at the set temperature and the process at the set temperature It can be used to control the processing time of products.
[0044]
【The invention's effect】
The steam-heat setting device and method for a fabric / fabric product of the present invention have the following effects due to the above-described configuration and operation.
[0045]
As described above, there is almost no difference (mainly temperature difference) in the processing ability of high-pressure steam between the central part and the peripheral part, and a stable steaming set can be performed.
[0046]
In addition, as a configuration equipped with a steam discharge control valve, even when the high pressure steam is supplied after the pressure processing vessel reaches a predetermined pressure, even if the product to be processed has a high density, Steam setting can be done in the same time on the surface side up to the center. Therefore, it is possible to stably set steam heat for a high-density processed product without increasing the steam temperature.
[0047]
In addition, since the boiler and the steam feed-in piping are not required, not only the equipment is simpler than the conventional apparatus, but also the treated product has a steaming temperature of 140 to 150 ° C. such as cellulose fibers such as cotton and hemp. Even when a high temperature is required, it is only necessary to use a pressure processing container that can withstand high pressure and high temperature specifications, and the overall cost of the equipment is low.
[0048]
In addition, the processing temperature varies depending on the material of the heat treatment material to be steamed, but in this device, the processing temperature can be set by adjusting the set pressure by changing the tightening strength of the pressure control valve using an actuator. Easy to do.
[0049]
Using an electromagnetic induction heater as the external heating means increases the heating efficiency of the pressure processing vessel and facilitates control of the heating output.
[0050]
By using a plurality of electromagnetic induction heating means, heating efficiency and output controllability can be further improved. In addition, compared with combustion heating means or resistance heating means such as ordinary gas, the controllability of the generation amount of high-pressure steam is high, and non-contact heating is possible, so heat loss due to conduction can be minimized and thermal efficiency is also good. .
[0051]
Furthermore, for non-high-density processed products that are loosely twisted in a rope shape, for example, other than the products that have been tightly squeezed as described above, the steam flow discharged by the steam discharge control valve is set to zero, By controlling the output of the external heating means so as to keep the treated product at a constant temperature, it is possible to perform heat treatment while suppressing energy consumption.
[0052]
In addition, using the apparatus of the following specification of the present invention, a fabric (100 g / m ² ) made of cotton fiber was subjected to drawing and steaming was performed at 145 ° C. × 15 min. This was carried out (JIS L1060 woven and knitted fabric pleatability test method: conforming to 5 washing methods), but no deformation occurred.
[0053]

[Brief description of the drawings]
FIG. 1 is a piping system diagram showing an example of a conventional steam heat setting device. FIG. 2 is a piping system diagram showing an example of a steam heat setting device of the present invention.
12 Product 14 Holding member (mounting table)
16 Pressure processing vessel 21 Pressure control valve 24 Steam discharge pipe 26 External heating means 27 Induction heating power supply 28 Induction heating coil 30 Controller
31 Steam discharge control valve 35 Water supply piping

Claims (2)

A steam heat set device that performs steam heat treatment to set shapes such as squeezing and pleating in fabrics and fabric products,
In a steam heat set apparatus comprising a pressure processing container having a pressure control valve for maintaining the pressure of high-pressure steam at a set value, and a holding member that is installed in the pressure processing container and holds a heat-treated product to be steamed.
Steaming of a fabric / fabric product, further comprising electromagnetic induction heating means disposed on at least the bottom side of the pressure processing container and evaporating water in the pressure processing container by directly heating the pressure processing container Set device.   2. The steam heat setting device for a fabric / fabric product according to claim 1, wherein the pressure processing container includes a steam discharge control valve in addition to the pressure control valve.

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