JPH01139859A - Method and apparatus for treatment of fabric with low bath ratio liquid stream - Google Patents

Abstract

PURPOSE: To provide the subject method comprising such a practice that, when a treatment solution is to be circulated in high flow and low bath ratio, the treatment solution is issued shower fashion via a flow path branched from a treatment solution circulating channel from above a residence tank, and the flow is varied at short time intervals to improve the uniform dyeability of a fabric and shorten fabric dyeing time. CONSTITUTION: This method comprises the following process: a branched piping 9 is furnished along a treatment solution circulating channel ranging from a solution suction part 3 via a connective tube 7, a pump 5 and a heat exchanger 6, to a nozzle 4, and a treatment solution is issued from a shower 11 onto the whole surface of a residence tank 1; wherein the flow of the treatment solution from the nozzle 4 is made invariant, and the total flow of the treatment solution is increased by the flow from the shower; the flow from the branched piping 9 is varied in short time intervals so as to prevent a fabric 8 from being sucked onto the solution suction part 3.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to jet dyeing and other processing methods and apparatus thereof, which operate at a large flow rate of processing liquid and at a low liquor ratio.

The most important factor for improving the level dyeing property and short-time dyeing in the conventional jet dyeing method is the number of times the fabric etc. comes into contact with the dye solution.

Compared to the conventional jet dyeing method, recent low bath ratio jet dyeing methods have attempted to increase the number of circulations of the treatment liquid to 1.0 to 1.5 times/min and shorten the treatment time.

Problems to be Solved by the Invention However, when attempting to further shorten the time by increasing the circulating flow rate of the processing solution using a low-liquid ratio jet dyeing method, the level of the processing solution is low, so fabrics, etc. are stored in the retention tank. Problems occurred in that the liquid was adsorbed to the liquid suction part, causing scratches, bumps, etc., and that fabrics etc. were entangled.

Scratching here refers to when the fabric hits the inner surface of a processing device such as a dyeing machine and produces a flowing luster on the surface, and hitting also means when a spot-like luster is produced.

In addition, if only the processing liquid circulation flow rate is increased in the conventional low bath ratio liquid jet dyeing method, the liquid jetting force from the jetting part is too strong and the kneading effect on the fabric is strong, reducing the texture and causing fuzz. There was a problem that problems such as the following occurred.

The present invention solves the above-mentioned problems, and is particularly useful in the liquid suction section in the retention tank when processing is carried out at a high flow rate of 2.0 to 4.0 times/minute of circulation of the processing liquid under a low bath ratio. It eliminates scratches, bumps, and other troubles that occur when fabrics come into contact with the fabric, and also uniformizes the temperature and dye concentration in the circulating treatment solution without damaging the texture of the fabric, improving level dyeing and dyeing. The purpose is to shorten the time.

Means for Solving the Problems In order to achieve the above object, the present invention provides a method as a first invention in which a processing liquid is branched from a processing liquid circulation path in a liquid flow processing apparatus that operates processing liquid at a large flow rate and at a low bath ratio. A low bath ratio liquid flow treatment for fabrics, etc., in which a flow path is provided to cause the treatment liquid to flow out in a shower-like manner from above the retention tank over almost the entire surface, and to cause fluctuations in the flow rate at extremely short intervals. method.

Regarding the device as the second invention, a cloth circulation processing passage connecting a transfer part for cloth or the like and a retention tank at both ends, and a liquid suction part provided at at least one location of the retention tank,
A processing liquid circulation path runs from the liquid suction section to a liquid injection section provided in the transfer section via a pump and a heat exchanger, and a processing liquid circulation path that branches off from the processing liquid circulation path that passes through the pump and heat exchanger, and includes a flow rate adjustment valve. A low liquid ratio liquid flow processing device such as a cloth is provided with a flow path and an outflow portion where the end of the flow path allows the processing liquid to flow out in a shower over almost the entire surface above the retention tank.

Effects In the first invention, in addition to controlling the amount of processing liquid flowing out from the processing liquid injection part of the normal processing liquid circulation path so that it flows out at the same flow rate as before, a pipe branched from this is provided to control the flow of the processing liquid from the storage tank. Since the processing liquid is made to flow out from above, the processing liquid flowing out from above the retention tank is also added to the flow rate ejected from the processing liquid injection part, and a large flow rate of processing liquid is supplied into the retention tank. It will be done.

Furthermore, since the flow rate from this branch piping is made to fluctuate at very short intervals, the fabric, etc., being transferred through the retention tank is attracted to the liquid suction part, which prevents scratches and bumps from occurring on the fabric, etc. can now be reliably prevented.

In the second invention, there is provided a flow path that branches from the processing liquid circulation path passing through the pump and the heat exchanger and has a flow rate adjustment valve, and an end of the flow path that showers the processing liquid over almost the entire surface above the retention tank. By providing an outflow part that flows out in a shape, the retention tank is given a shower-like processing liquid flowing out from above in addition to the processing liquid from the normal processing liquid circulation path, and a large flow rate of processing liquid S? It will be supplied into the lithium reservoir.

Corresponding to this supply amount, a large amount of processing liquid is sucked in from the liquid suction portion, thereby achieving circulation of a large flow rate of processing liquid.

Therefore, there is no problem of over-rubbing the fabric or the generation of fuzz, etc., and since the overall processing liquid circulation rate is increased by the branch piping, the temperature and dye concentration of the processing liquid are sufficiently uniform. As a result, level dyeing properties were improved, and the number of times the fabric etc. came into contact with the treatment solution was also significantly increased, making it possible to shorten the dyeing time.

Furthermore, since the flow rate flowing out from the above-mentioned flow path is varied, the flow rate in the retention tank changes, which prevents the fabric from floating or being attracted to the liquid suction section, causing scratches and bumps on the fabric. In addition, rhythmic movement is provided by the movement of the processing liquid, which has the effect of improving level dyeing.

Example The drawing is a longitudinal sectional view of an apparatus for carrying out the method of the invention.

1 is a retention tank, 2 is a transfer section, and these retention tank 1 and transfer section 2
They are installed almost parallel to each other, and are connected at both ends to form a circulation processing path for fabrics.

Reference numeral 3 denotes a liquid suction section, which is provided at at least one location in the retention tank 1. In the embodiment, three locations are provided. 4 is a nozzle, which is one of the liquid injection parts. 5 is a pump, 6 is a heat exchanger, and 7 is a connecting pipe, which constitutes a processing liquid circulation path from the liquid suction section 3 to the nozzle 4 via the pump 5 and the heat exchanger 6, which are connected by the connecting pipe 7. ing. 8 is a fabric. Reference numeral 9 denotes a branch pipe, which is provided by branching off to a portion of the processing liquid circulation path beyond the heat exchanger 6. IO is a flow rate adjustment valve that enables automatic switching. II is a part of the shower and is provided above the retention tank l over almost the entire surface. Reference numeral 12 indicates an inlet/outlet for the fabric, 13 indicates a drive reel, and 14 indicates a processing liquid. 15 is a dye addition tank;
16 indicates an infusion pump.

In the embodiment of the present invention, the retention tank l and the transfer section 2 have a low bath ratio.
The treatment is carried out while the cloth is being moved through the cloth circulation treatment path. The processing liquid sucked from the liquid suction section 3 is circulated through the pump 5, heat exchanger 6, connecting pipe 7, nozzle 4, and transfer section 2 in the processing liquid circulation path. A branch pipe 9 branched from a position beyond the heat exchanger 6 in this processing liquid circulation path allows the processing liquid to flow out from above the retention tank l. By adjusting the flow rate adjustment valve 10, the amount of processing liquid that flows out in a shower-like manner can be varied. When the valve is opened, the amount of flowing out of the processing liquid in a shower-like manner is added to the normal processing liquid circulation amount, so a large amount of processing liquid flows out. The processing liquid is circulated at a low bath ratio. Part of the shower with a large amount of processing liquid! When the fabric flows out from the liquid suction section 3, the fabric approaches the liquid suction section 3, and when the flow rate regulating valve 10 is throttled, it moves away from the liquid suction section 3. By repeating this process, the fabric moves rhythmically. The amount of outflow from the branch pipe 7 is changed at extremely short intervals, and may be changed automatically at regular intervals.

It is appropriate to open and close the flow rate regulating valve IO at intervals of about 5 to 30 seconds. Since a large amount of suction is always drawn from the liquid suction section, a large amount of processing liquid is circulated, which has the effect of making the concentration distribution and temperature distribution of the dye uniform and maintaining level dyeing. Since the fabric moves accordingly, there are no scratches or bumps caused by suction into the suction part as in the conventional example, further improving level dyeing properties and shortening the dyeing time.

Conventional method Invention method Flow rate 1200βiL7'min 3000βit
/Number of liquid circulation 1.0 times/min 2.5 times/
Separation and staining time: 120 minutes 60 minutes As described above, in this example, the processing flow rate was large, the number of liquid circulations was increased, and the staining time was significantly shortened. Furthermore, the fabric was able to be processed with good level dyeing properties, with no scratches or fluffing at all.

Effects of the Invention As the first aspect of the present invention, a part of the shower branched from the processing liquid circulation path is provided, and by adding the flow rate from this part of the shower, processing is performed at a large flow rate, and the flow rate from the liquid suction part to this part is increased. By sucking in the corresponding processing liquid and further increasing the circulation frequency of the processing liquid to 2.0 to 4.0 times/min, it has become possible to operate at a low bath ratio with a large flow rate.

In addition, by varying the flow rate from a portion of the shower at short intervals, a rhythmic speed is generated in the fabric in the retention tank, which prevents scratches and bumps caused by suction. By repeating the rhythmic movement, the retention tank can be moved smoothly, making it possible to process with a nice texture.

In the apparatus of the second invention, a large amount of processing liquid flows in the retention tank by a branch pipe branching from the treatment liquid circulation path, a flow adjustment valve, and a part of the shower provided above the retention tank. Although the bath ratio was low, the number of contacts with the treatment liquid was increased, and the level dyeing property was improved in a short time. Furthermore, by causing fluctuations in the flow rate, there is no danger of the fabric coming into contact with the liquid suction section.

[Brief explanation of the drawing]

The drawing is a longitudinal sectional view of an apparatus for carrying out the method of the invention. 1... Reservoir 4Q 2... Transfer section 3... Liquid suction section 5... Pump 6... Heat exchanger 8...
・Fabric 9... Branch pipe 10... Flow rate adjustment valve 11
...Part of the shower

Claims (4)

[Claims] (1) In a liquid flow processing device that operates the processing liquid at a large flow rate and at a low bath ratio, a flow path branching from the processing liquid circulation path is provided so that the processing liquid flows out from above the retention tank almost over the entire surface in a shower-like manner. 1. A low liquid ratio liquid flow treatment method for fabrics, etc., characterized in that the outflow amount is caused to fluctuate at extremely short intervals. (2) A method for treating a fabric with a low liquid ratio according to claim 1, wherein the amount of outflow is changed quantitatively at regular intervals. (3) A fabric circulation processing passage connecting a fabric transfer section and a retention tank at both ends, and at least one of the retention tanks.
A liquid suction section provided at several locations, a processing liquid circulation path from the liquid suction section to a liquid injection section provided in the transfer section via a pump and a heat exchanger, and a processing liquid circulation path passing through the pump and heat exchanger. A fabric, etc., characterized in that it has a flow path branching from the flow path and having a flow rate adjustment valve, and an outflow portion at the end of the flow path that allows the processing liquid to flow out in a shower over almost the entire surface above the retention tank. Low liquid ratio liquid flow treatment equipment. (4) The low-liquid-ratio liquid flow treatment device for fabrics and the like according to claim 3, wherein the flow rate regulating valve is an automatic valve that causes fluctuations in the outflow amount at very short regular intervals.