JP3755707B2 - Textile product processing method and apparatus - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a processing method and apparatus for refining and dyeing textile products (hereinafter also referred to as fabrics).
[0002]
[Prior art]
Conventionally, in the textile dyeing process, as shown in FIG. 3, for example, the temperature of the processing liquid is raised from about 20 ° C. (point A) to about 130 ° C. (point B), and this temperature is maintained for a certain time (point C). Until the dyeing is completed, the processing liquid is cooled and discharged at the point D after completion of the dyeing (the point C). The water was washed repeatedly with water, water, and drainage, and undyed dyes and other used chemicals were washed away.
[0003]
[Problems to be solved by the invention]
In the above conventional treatment method, in order to obtain the specified dyeing fastness, it is necessary to repeatedly drain and supply water, so a large amount of water is required in the washing process of the fabric, and the treatment tank is filled with water. There is a problem that the dye is attached and the pot needs to be washed when changing colors.
[0004]
Therefore, an object of the present invention is to provide a textile processing method and apparatus capable of simplifying the water washing process and the pot washing.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the first invention according to claim 1 is a method for dyeing a textile product at a predetermined temperature in a treatment tank, wherein a dye separation circuit having a cooler and a filter is provided, After finishing the dyeing of the textile product, the treatment liquid is diverted to the dye separation circuit and cooled by the cooler, and then the dye and impurities deposited by the cooler are removed by a filter and returned to the treatment tank. It is the processing method of the textiles characterized by the above-mentioned.
[0006]
According to a second aspect of the present invention, in the fiber product processing apparatus for dyeing a fiber product at a predetermined temperature in the processing tank, a processing liquid circulation path is formed outside the processing tank via a pump, and the processing is performed. the dye separation circulation path back to the processing tank branched from a portion of the liquid circulation path is provided, the dye separation circulation path, a condenser provided located upstream and located downstream, the dyes and cooling An apparatus for treating textile products, comprising a filter from which impurities that have precipitated are removed .
[0007]
In the present invention, the treatment liquid in the treatment tank is maintained at a constant temperature after heating, and the fabric is treated at this temperature, and the dyeing of the fabric almost reaches its limit after a predetermined time. After this dyeing is completed, the processing liquid in the processing tank is diverted to the dye separation circuit, rapidly cooled to an arbitrary temperature by a cooler, then filtered by a filter and returned to the processing tank, and this is repeated. Circulate.
[0008]
As a result, undyed dye is captured by the filter, but impurities such as oligomers that are dissolved in the treatment liquid can be precipitated by cooling, and can be separated by the filter.
[0009]
Therefore, the treatment liquid after the completion of dyeing is decolored, so that the conventional water washing step can be omitted and the stain on the inner surface of the treatment tank can be prevented.
Further, the fabric is also cooled by cooling the treatment liquid.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described based on the example shown in FIG.
A bottom surface on the downstream side of the stagnation portion in the stagnation tank 1 constituting the processing tank is formed in a tapered rising portion 2, and a reel box 3 is disposed at the end of the rising portion 2. A jet nozzle 4 is provided at the lower portion of the reel box 3, and a transfer pipe 5 is connected from the downstream side of the jet nozzle 4 to the upstream (rear) side bottom surface of the stagnation tank 1. The transfer pipe 5 constitutes a circulation path for the treated fabric.
[0011]
A reel 6 is provided in the reel box 3, and a treatment fabric 7 is placed endlessly on the stagnation tank 1 and the transfer pipe 5 by being hung on the reel 6. The fabric 7 moves and circulates in the direction of the arrow by the ejection.
[0012]
A casing 8 made of a perforated plate is provided at the bottom on the upstream side of the stagnation tank 1, and serves as a partition wall for separating the endlessly bonded fabric 7 and the treatment liquid 9 during normal dyeing.
[0013]
A liquid reservoir 10 communicating with the interior of the tank 1 is provided at the bottom (front) bottom of the stagnation tank 1, and the liquid reservoir 10 is connected to a pump 12 via a suction pipe 11, and further discharged from the pump 12. The discharge pipe 13, the filter 14, the multi-tube heat exchanger 15, and the outlet pipe 16 are connected to the injection nozzle 4 from the side, and these constitute a processing liquid circulation path.
[0014]
A shower pipe 17 is disposed on the upper upstream side of the stagnation section 1 and connected to the heat exchanger 15 through a pipe 18 branched from the outlet pipe 16.
19 is a gate valve, 20 is a water supply valve, 21 is a drain valve, 22 is a pressurization valve provided in a compressed air supply path, and 23 is an air vent valve provided in an air vent pipe 24 for decompressing the stagnation tank 1.
[0015]
A branch pipe 25 that divides the processing liquid is branched to the outlet pipe 16 that constitutes the processing liquid circulation path, and a cooler 28 that is a cooling means for the processing liquid via a decolorization processing valve 26 and a flow rate adjustment valve 27. It is communicated to. The outlet pipe 29 of the cooler 28 is connected to a filter 30 as a processing solution filtering means, and its return pipe 31 is connected to the stagnation section 1.
[0016]
The outlet pipe 16 is provided with a thermometer 32 for detecting the temperature of the processing liquid, and the outlet pipe 29 is provided with a thermometer 33 for detecting the temperature of the processing liquid cooled by the cooler 28.
[0017]
As the filter 30, for example, a membrane filter made of an ultra-membrane or a reverse osmosis membrane is used. The concentrated liquid mixed with the dye captured by the filter 30 is stored in the liquid storage part 36 through the discharge pipe 34 and the discharge valve 35, and is sent to a predetermined part by opening the drain valve 37.
[0018]
38 is a flow control valve.
As described above, when the fabric 7 is dyed, the fabric 7 is annularly arranged in the stagnation tank 1 and the transfer pipe 5 as shown in FIG.
[0019]
Then, the decolorization processing valves 26 and 26a are closed, the pump 12 is started, the processing liquid is circulated in the processing liquid circulation path, and the processing liquid is heated to a predetermined temperature by the heat exchanger 15. The heated treatment liquid is ejected from the ejection nozzle 4, and the fabric 7 is circulated and moved in the direction of the arrow by the ejection force to perform the dyeing process. This dyeing is performed at points A to C in FIG. 2, that is, points A to C in FIG.
[0020]
Next, after the dyeing process is completed, that is, after point C in FIG. 2, the heating by the heat exchanger 15 is stopped and the cooler 28 is cooled, the decoloring valves 26 and 26a are opened, and the pump 12 is driven. To do. As a result, the processing liquid pumped by the pump 12 circulates in the processing liquid circulation path and transfers the fabric 15, and a part of the processing liquid is diverted from the outlet pipe 16 to the branch pipe 25. The stagnation tank 1 is circulated through the vessel 30, the decolorization processing valve 26a, and the return pipe 31.
[0021]
Since the processing liquid is cooled by the cooler 28 by this circulation, the temperature of the processing liquid is detected by the thermometer 33, and the processing liquid is cooled to the set temperature. The treatment liquid can also be cooled by using the heat exchanger 15 together.
By the circulation of the treatment liquid, the undyed dye is captured by the filter 28. In particular, impurities such as oligomers dissolved and dissolved in the treatment liquid are precipitated by cooling and separated by a filter. Can do. The treatment liquid is cooled and filtered in the range F from point C to point D in FIG. 2 and then drained. Therefore, the conventional water washing indicated by E in FIG.
[0022]
Next, a reverse osmosis filter is used as the filter 30, polyester fibers are used as the fabric 7, 2% owf (dye (%) with respect to the fiber weight) is used as the disperse dye, and after dyeing at 130 ° C., An example in which the dye is separated in such a cooling step will be described.
[0023]
In the case of polyester fiber, the oligomer is dissolved when the treatment liquid temperature is 100 ° C. or more simultaneously with the filtration treatment of the undyed dye, but it has the property of being precipitated when cooled to a predetermined temperature. When the treatment liquid was cooled to 40 ° C. by 28 and circulated for about 20 to 30 minutes, the treatment liquid became almost colorless and the oligomer could be removed, and the treatment liquid at this time was measured with a spectrophotometer. The absorbance was infinitely close to 0.
[0024]
Thereafter, following the drainage, the water washing was performed three times in the conventional method, but the process was completed by omitting it once. As a result, a treatment result equivalent to the conventional one was obtained.
Further, the dye or the like captured by the filter 30 is concentrated to be accumulated in the liquid reservoir 36 from the discharge pipe 34 and sent to a predetermined portion by opening the drain valve 37. This concentrated solution can be used again for staining.
[0025]
Furthermore, the durability of the reverse osmosis membrane of the filter 30 could be maintained for a long time by setting the cooling temperature of the treatment liquid to 40 ° C. as described above.
In addition, although the said Example is an example which applied this invention to the dyeing machine which circulates a cloth, this invention can be used also for other types of dyeing machines, and other types of dyes. It is not limited to the dyeing machine of the examples.
[0026]
【The invention's effect】
As described above, according to the invention of the present application, it is possible to almost separate and remove the undyed residual dye from the fiber product contained in the dyeing effluent, so that the washing step can be omitted, the processing time is shortened, and the amount of water used Can be greatly reduced. Furthermore, since the dye adhesion in the dyeing tank can be reduced, cleaning of the pot by color change can be simplified.
[Brief description of the drawings]
FIG. 1 shows an embodiment of the present invention, and is a piping diagram with a section of a processing tank section.
FIG. 2 is a diagram showing processing steps of the present invention.
FIG. 3 is a view showing a conventional processing step.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Reservoir tank 10,11,13,16 which is a processing tank ... Pipe | tube 25, 31 which comprises a process liquid circulation path ... Pipe | tube 28 which comprises a dye separation circulation path ... Cooler 30 ... Filter

Claims (2)

For dyeing textile products at a predetermined temperature in the treatment tank, a dye separation circulation path having a cooler and a filter is provided, and after finishing the dyeing of the textile products, the treatment liquid is divided into the dye separation circulation path and A method for treating a textile product, wherein after cooling with a cooler , the dye and impurities deposited by the cooler are removed by a filter and returned to the treatment tank. In a fiber product processing apparatus for dyeing a fiber product at a predetermined temperature in a processing tank, a processing liquid circulation path is formed outside the processing tank via a pump and branched from a part of the processing liquid circulation path. A dye separation circuit returning to the tank is provided, and a cooler is provided on the upstream side of the dye separation circuit, and a filter is provided on the downstream side to remove the dye and impurities deposited by cooling . An apparatus for processing a textile product.

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