JPH0135941B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides for fabrics to be subjected to moist heat treatment in a normal pressure room.
The present invention relates to a method and apparatus for continuous moist heat treatment of fabric, in which treated fabric of good quality can be obtained continuously and at high speed by continuously applying a high-temperature liquid of 100°C or higher.

For example, conventional methods for continuously refining, bleaching, dyeing, resin processing, or weight loss processing of long lengths of fabric include two methods: normal pressure processing under normal pressure, and high pressure above normal pressure. However, the former normal pressure treatment method requires a long time to complete the treatment, is not suitable for mass production, and is also lacking in quality when the treatment is completed. For this reason, the latter high-pressure processing method, which is superior in processing speed and processing quality, is now being adopted, but although this high-pressure processing method allows continuous insertion of the fabric, it is difficult to maintain high temperature and high humidity. The fabric is subjected to continuous moist heat treatment at high temperature and high humidity using a steamer can, that is, a reactor, which can be used to perform continuous wet heat treatment of the fabric at high temperature and high humidity. It is capable of continuous and high speed processing such as resin processing and weight reduction processing.
In this high-pressure moist heat treatment method for fabrics, the inside of the steamer can is heated prior to the moist heat treatment.
Since the steamer must be maintained in an atmosphere of high temperature and high humidity, it takes a long time for the interior of the steamer can to reach the specified high temperature and high humidity.
It takes a long time to prepare the fabric before it is put into operation, and furthermore, a large amount of thermal energy is expended until the inside of the steamer can has an atmosphere at a predetermined temperature and humidity.

In addition, the fabric inlet and outlet of the steamer can allow continuous introduction and extraction of fabric, but if the steamer is equipped with a sealing mechanism to maintain high temperature and high humidity inside the steamer can, , the overall structure of the steamer can becomes complicated,
Furthermore, along with the demand for a pressure-resistant structure and a heat-resistant structure, the size of the device has increased, resulting in an increase in the cost of the entire device. For this reason, guide rolls are provided that allow the fabric to transfer continuously and in a meandering manner, and a number of nozzles that are close to opposite sides of the transfer fabric and spray high-temperature liquid toward the fabric are provided. We have proposed a method in which the fabric to be treated is passed through the heat treatment chamber, and the desired treatment can be performed continuously by receiving the high humidity heat in the heat treatment chamber. However, in a hot liquid treatment chamber with such a structure, the high temperature liquid (steam) injected from a large number of nozzles is convected (flowing), which causes non-uniform moist heat action over the entire area of the wide fabric. Due to this, when dyeing the fabric, there was a problem that the dyeing was likely to be medium-rare, medium-dark (uneven dyeing).

The present invention has been made in view of the above, and a main object of the present invention is to bring a heating pipe close to a fabric to be processed and heat the fabric at a temperature of, for example, 300 degrees.
The process is progressed while being heated around ℃, and during this process, the high-temperature liquid is applied by contacting the high-temperature liquid application roll that extrudes the high-temperature liquid. A continuous moist heat treatment method for fabric that can be achieved rapidly and continuously;
The purpose of this invention is to provide such a device.

The present invention will be explained in detail below based on embodiments shown in the drawings.

Reference numeral 1 denotes a moist heat treatment chamber in which moist heat is applied to a fabric under normal pressure. Inside this moist heat treatment chamber 1, there are guide rolls 3 located above and below 2 for guiding the fabric 2 to be treated in a meandering manner in a tension-free state. It is arranged in stages. Particularly, all or part of the guide rolls 3 disposed in the upper stage are used as spreading rolls to prevent the fabric from wrinkling. 4
is a heating pipe arranged along the transport path of the fabric 2 which is transported in a meandering manner by the guide rolls 3, and inside this heating pipe 4 is a high boiling point gas sent from a boiler which will be described later. Heating oil (300℃)
is beginning to be distributed. Reference numeral 5 denotes a liquid application pipe arranged to impregnate the fabric 2 meandering within the moist heat treatment chamber 1 with a predetermined heating liquid (solution or hot water). The necessary amount of high-temperature heated liquid of 100° C. or higher supplied from the heater is successively extruded or oozed out to be applied to the fabric. Reference numeral 6 denotes a liquid applying machine placed outside and in front of the moist heat treatment chamber 1, and this liquid applying machine 6 applies a predetermined processing liquid (refining liquid, bleaching liquid, dyeing liquid, resin liquid, etc.) to the fabric.
can be applied quantitatively and uniformly. 7
1 is a liquid sealing tank provided at the outlet of the wet heat treatment chamber 1, 8 is a squeezing roll thereof, and 9 is an exhaust duct. Next, the structure of the liquid heater 10 will be described. This liquid heater 10
is a can body 11 that can be sealed, and this can body 1
It is equipped with an internal pressure automatic adjustment valve 13 for keeping the steam pressure in the tank constant, and a drain valve 14 used as necessary. Reference numeral 15 denotes a processing liquid heating pipe that is arranged in a meandering manner inside the can body 11. The processing liquid supplied from the liquid tank 12 provided outside the can body 11 is passed through the processing liquid heating pipe 15 to heat the can. body 11
The processing liquid heating pipe 15 is connected to the liquid application pipe 5 described above.
Further, the piping condition of these heating tubes 15 is not limited to this embodiment, but may be formed into an appropriate shape so as to easily receive the heat inside the can body 11, and furthermore, a large number of blades may be attached to the heating tubes. , the thermal conductivity may be increased. 16 is a conduit that communicates the end of the heating pipe 4 in the wet heat treatment chamber 1 with the inside of the can body 11; 17 is a conduit that communicates the tip of the pipe 4 with the can body 11; A boiler 18 is provided in the middle of the conduit 17 to heat the oil flowing through the conduit 17. 1
9 and 20 indicate liquid pressure pumps.

The above is the configuration of this embodiment.Next, its operation will be described.First, the fabric guide roll 3 and the liquid applicator 6 are driven, and the liquid applicator 6 applies a predetermined liquid to the impregnated fabric. It is made to run within the moist heat treatment chamber 1. At the same time, the boiler 18 is heated to heat the oil in the conduit 17 to about 300°C,
The heating pipe 4 is heated by flowing through the heating pipe 4 arranged in the wet heat treatment chamber 1. By heating the heating pipe 4, the fabric 2 running close to the heating pipe 4 is heated to a high temperature, for example, about 250° C., and progresses through the moist heat treatment chamber 1 while being heat treated. The heating oil flowing inside the heating pipe 4 loses heat to the heating pipe 4 and gradually lowers in temperature, and at the end of the heating pipe 4 in this embodiment, the temperature drops by about 1/3, that is, 200°C. The liquid is lowered to a point close to the original temperature and is supplied into the can body 11. Therefore, the temperature inside this can body 11 is approximately 200 to 160°C.
The oil in the can body 11 is sequentially drawn out by the pump 19, heated again to nearly 300°C by the boiler 18, and circulated into the heating pipe 4 in the wet heat treatment chamber 1. The heating pipe 4 is heated.

In addition, the processing liquid heating tube 15 arranged inside the can body 11 is
Since the oil filled in the can body 11 is heated to follow the temperature of 200°C, the liquid flowing through the processing liquid heating pipe 15 from the liquid tank 12 is also heated to approximately 200°C, and the liquid application pipe 5 A high-temperature liquid is applied to and impregnated into the fabric 2 which is extruded from the liquid application pipe 5 and runs in contact with the liquid application pipe 5. By setting in advance the entire amount of liquid exuded or extruded onto the circumferential surface of the liquid application roll 5 to an amount that can be absorbed into the fabric, the liquid can be sufficiently impregnated into the fabric without waste. It is.

As described above, the present invention provides a heating pipe that is heated by the flow of a heating fluid along the transfer path of the fabric to be processed, so that the transferred fabric is heated while progressing, and furthermore, the transferred fabric is heated. According to the present invention, the continuous wet heat treatment method and apparatus for a fabric are made to apply the liquid at appropriate times by bringing the high-temperature liquid into contact with a liquid application roll that exudes or extrudes the fabric. Moist heat treatment can be performed while heating to high temperatures, for example, close to 300℃, and this allows a sufficient amount of heat and liquid to be applied to the fabric to be treated, making it possible to mass produce high quality treated fabrics. be. Furthermore, according to the present invention, since the fabric is heated by radiant heat from the heating pipe and does not use convection heat, it is possible to perform uniform heat treatment over the entire surface of the fabric, resulting in uniform treatment. can be achieved.

In addition, according to the above-mentioned liquid application roll, the necessary amount of liquid can be oozed or extruded from the circumferential surface of the liquid application roll, and 100% of the liquid can be absorbed into the fabric, so the amount of bleeding can be reduced. By adjusting the amount of liquid, it is possible to impregnate the fabric with enough liquid and without any excess liquid, that is, without causing liquid waste.As a result, the washing process after the liquid treatment can also be simplified, which not only eliminates liquid waste. In addition, it is possible to conserve water resources, simplify the wet heat treatment equipment, save thermal energy, and achieve high-temperature wet heat treatment with excellent economic efficiency.

[Brief explanation of drawings]

The drawing is an explanatory diagram of the overall structure of an embodiment of the wet heat treatment apparatus according to the present invention. 1... Moist heat treatment chamber, 2... Fabric, 3... Guide roll, 4... Heating pipe, 5... Liquid applying pipe, 6... Liquid applying machine, 7... Liquid sealing tank, 8... Squeezing roll , 9...exhaust duct, 10...liquid heater,
11... Can body, 12... Liquid tank, 13... Internal pressure automatic adjustment valve, 14... Drain valve, 15... Processing liquid heating pipe, 16, 17... Conduit, 18... Boiler, 1
9,20...Pump.

Claims (1)

[Scope of Claims] 1. A heating pipe that is heated by the flow of a heating fluid is disposed along the transfer path of the fabric to be processed, and the transferred fabric is heated while progressing, and furthermore, the transferred fabric is heated. 1. A method for continuous moist heat treatment of a fabric, characterized in that the liquid is applied at appropriate times by bringing the liquid into contact with a liquid applying roll from which a high-temperature liquid is exuded or extruded. 2. A group of heating pipes arranged along the fabric transfer path so as to be close to the transfer fabric; a boiler for heating heating oil that is a heating medium circulated in the heating pipe; and a boiler for heating the application liquid discharged from the liquid application pipe by residual heat of the oil from the heating pipe. 1. A continuous wet heat treatment apparatus for fabric, characterized in that it is equipped with a heating device.