JPS6030388B2 - Processing method and device for textile products - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for controlling processing temperature in an apparatus for dyeing, scouring, bleaching, etc., by circulating textile products, i.e. processed fabrics, in a moat-like manner, and It is related to equipment, and its purpose is to dye, scouring, and
The aim is to streamline the dyeing process by eliminating so-called unnecessary conventional processing time in treatments such as bleaching, especially in dyeing.

In most cases, dyeing programs were determined by experienced dyeing engineers who determined all dyeing conditions empirically.

Also, regarding the method of setting the conditions on the device, for example,
Even when it comes to temperature control curves, it is difficult to create a program every time to account for changes in variety, texture, processing amount, hue, etc. for each batch, so we decided on several types of patterns in advance based on the greatest common divisor. Since we select from among them and use them repeatedly, we cannot obtain optimal temperature control, and in order to prevent trouble from occurring, we take a large safety factor, which inevitably leads to unnecessary time and reduced productivity. there were. Furthermore, even if the optimum temperature curve is obtained by chance, the circulation speed for each fabric may change during the dyeing process.If the change is large, for example, if the dyeing conditions are such that the normal speed of the processed fabric is 300mm, /min (circulation time: 6 current sand), but if the fabric stripping speed drops to 240/min (75 seconds), if the temperature control method is a secondary one, the fabric is constantly circulating. Even if an abnormality occurs, the temperature control proceeds as initially set regardless, which has the drawback of causing dyeing problems such as uneven dyeing and different colors. Furthermore, if the angular velocity of the cloth is increased (the circulation time is shortened), dyeing problems will not occur, but extra time will be required, which is a problem. When the normal speed of the cloth changes as described above, it is difficult for the operator to modify the cloth speed or the rate of temperature change.

In the present invention, the temperature program is not determined empirically, but is determined based on condition setting factors such as the quality, structure, processing amount, type of dye, processing liquid amount, cloth speed, etc., and the dye processing equipment. We provide an ideal dyeing calculation formula that combines the level dyeing ability of the company, and automatically control calculation correction using the cloth circulation time as a variable, eliminating unnecessary time in the dyeing process as described above, In this method, all difficult operations are rationally controlled, dyeing troubles are prevented, and highly efficient results are obtained. That is, the first invention is a method of processing textile products by circulating them in an endless manner, in which one circulation time of the textile is detected and a temperature program is determined based on preset processing conditions. , the temperature change rate is reduced when the cloth circulation time increases (fabric speed decreases), and vice versa, and the temperature is automatically programmed for each cloth circulation. The second invention is a method for processing fibers, which is characterized by changing the injection rate of dyes and chemicals for each circulation of the fabric strip, further setting the maximum allowable circulation time, and adjusting the amount of fabric. 1 circulation increases,
A textile characterized in that when a set maximum allowable circulation time is reached, the injection of the dye or chemical is temporarily stopped, and after confirming that the circulation of the cloth band has returned to within the allowable circulation time, the control is restarted. The third invention resides in a method for treating a product, and the third invention is the first invention described above.
Ryokan implementing the invention of. That is, a transfer pipe, a retention tank, an annular processing passage formed by the transfer pipe and the retention tank, a means for feeding the tail of the treated fabric to an upstream machine of the transfer pipe provided in the passage, and A processing liquid circulation passage leading from the bottom of the retention tank via a circulation pump to an injection nozzle opened at the upstream end of the transfer pipe, a temperature control device for the processing liquid interposed in the middle of the passage, and the annular processing passage. A textile processing apparatus is provided, characterized in that a measuring object is always attached to the processed cloth to be transferred, and at least one or more sensing objects corresponding thereto are provided. Next, the present invention will be explained based on embodiments shown in the drawings. In FIG. 1, reference numeral 1 denotes a sump tank, and this and a transfer pipe 2 form an annular processing passage.

Reference numeral 3 is an entrance/exit for the cloth to be treated, and is configured to be openable and closable.

4 is a liquid suction port that closes to the retention tank 1; 5 is a suction pipe that connects the suction port with the suction side of the pump 6; and 7 is a suction pipe that connects the discharge side of the pump 6 with the upstream end of the transfer pipe 2. A filter 8 and a heat exchanger 9 are provided in the discharge piping. 1
9 indicates a heat medium inlet, and 201 indicates a heat medium outlet.

The liquid sucked from the suction 04 is transferred to a suction pipe 5, a pump 6, a discharge pipe 7, a filter 8, a heat exchanger 9, and a processing liquid injection unit 1.
0, and returns to the general storage tank 1 from the upstream end of the transfer pipe 2. Reference numeral 11 denotes a drive device with a variable speed motor or a reel or roll with a variable speed device for feeding the fabric to be treated into the transfer pipe.

12 is the cloth to be treated, 13 is the treatment liquid level, 14 is the treatment liquid injection control valve, 15 is the detector, 16 is the object to be measured attached to the cloth, and 17 is the downstream end of the transfer pipe and one end of the retention tank. The lotus passage section 18 indicates a gas phase section.

In this embodiment, the fabric to be treated 12 is pulled up from the liquid level by the fabric feeding reel or roll 11, passes through the processing liquid injection part 10, moves inside the transfer pipe 2, and is transferred to the communication part 1 at the other end.
7, it is introduced into the swamp tank 1.

The fabric strip moves forward in the retention tank 1 while decreasing its speed, is pulled up again by the fabric feed reel or roll 11, and transferred to the transfer pipe 2 by the treatment liquid spraying section 10. While circulating through the annular processing path in this manner, the treated fabric tail is subjected to treatments such as dyeing, scouring, bleaching, and relaxing. now,
The control method will be explained by taking as an example the case where a 100% polyester cloth is dyed using a disperse dye using the apparatus shown in FIG.

By circulating the treated cloth wealth 12 through the annular treatment passage,
Each time the object to be measured 16 attached to the treated cloth 12 passes through the detector 15 attached to the sump tank 1, one circulation time t (seconds) can be measured.

When dyeing polyester fibers with disperse dyes, the rate of temperature rise can generally be determined using the following equation. The temperature of the processing liquid is controlled at the heat medium inlet 19 and the heat medium outlet 20 by calculating T using the following equation (1) and issuing a command to a temperature control device (not shown). .

T=Tofutsu ・---・Wind vf=Total... ...Wind T...Temperature change rate (℃/min) V...Maximum absorption rate of dye (%/℃・min) L・
...Full length of fabric (L) Vf...Fabric speed (m
/min) Kf... Evening beam capacity of dyeing equipment (%/cycle)
FIG. 2 shows the dyeing temperature curve of common polyester fibers.

FIG. 3 illustrates the temperature increase rate for each cycle of the fabric between the temperatures T2 and T3 in FIG. 2.

In FIG. 3, up to point a, the almost constant circulation time was t=60 seconds, but for some reason the value of t started to change. Then, the temperature increase rate from point b to point c is controlled by issuing a command to the temperature control device using the data obtained by calculating the sand with circulation time t = 6 from point a to point b using the formula. . Next, the circulation time from point b to point c is t = 69 sand, so when the detector 15 detects it at point c, the circulation time from point b to point c is calculated as t = 69. According to the data, the temperature control device operates from point c to point d.
This kind of operation is repeated, but if the allowable circulation time (overtime) t' is set, for example, in the case of Fig. 3, r=
7, the control of the temperature control device is stopped after the set time t' has elapsed, and the system waits until the next detector 15 issues a detection command. As described above, in addition to controlling the temperature change b rate using the calculation formula and using the one-cycle time of the cloth as a variable, there is another method that can be used to simply set the temperature program determined based on past experience. The temperature change rate is changed depending on the rate of increase/decrease in time. For example, one circulation time of a cloth band is 1%.
It is also possible to reduce the time-varying IB rate that has increased (reduced cloth speed) by 1%. Also, as described above, 1 of the cloth obi is automatically
In the method of setting a temperature program for each cycle, if for some reason the deviation between the measured value and the set value becomes large, such as not following the temperature set value, the program is stopped and restarted when the deviation becomes 0. The structure is such that the deviation value for stopping the program can be set arbitrarily. According to the present invention, as described above, it is possible to automatically obtain a temperature program that meets the dyeing conditions for cloth, so that good results can be obtained without dyeing problems such as uneven dyeing. In addition, compared to the conventional empirical method, if the conditions are the same, the same result can be obtained no matter who does it, so it is extremely effective in practice because it eliminates variations in quality. Above, we have explained how to control the temperature change rate by taking as an example the case where 100% polyester cloth is dyed using disperse dyes. The dye solution conditions become unstable due to foaming and changes in solution viscosity during the chemical injection process, etc., and the time for one circulation of Futake increases (decrease in fabric speed).
If this happens, slow down the injection speed of dyes or chemicals, or temporarily stop the injection of dyes or chemicals when the maximum allowable circulation time is reached, and check that the circulation of the fabric strip has returned to within the allowable circulation time. However, control can be started again. In addition, although the above-mentioned example of dyeing processing has been described, it can also be widely applied to other processes such as scouring, bleaching, and erecting (crepe formation).

That is, one circulation time t (seconds) of Fugaku is used as a variable, and calculation formulas for each process are given. For example, T=K・t
...[B-T=K. f(t)+C
......[BrK......Mechanical coefficient f(t)...Function C of Futake's one circulation time t...
...Instead of detecting and measuring the constant and one circulation time t (seconds) of the cloth band in the above-mentioned method, patent application No. 1983-102801 (Application/
As mentioned in 1977 (July 25, 1972), the time △t for the cloth to pass between a pair of detectors placed a certain distance apart is detected and measured, and the cloth speed vf = 1. It is possible to calculate the rate of temperature change, etc. by calculating and substituting it into the formula or other processing calculation formula, and control the processing temperature, the injection rate of dyes, chemicals, etc.

In this manner, the present invention is widely applicable to fiber treatments other than dyeing, and is extremely effective in practice as in the case of casting and dyeing.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view showing an example of processing and fabrication of endless fiber products according to the present invention, Fig. 2 shows a dyeing temperature curve of a general polyester fiber, and Fig. 3 shows a temperature control method of the present invention. It is a diagram. 1... Retention tank, 2... Transfer pipe, 6... Pump, 9
... heat exchanger, 11 ... reel, 12 ... heat treatment cloth, 15 ... detector, 16 ... object to be measured, 19.
...heat medium inlet, 20...heat medium outlet. Ga/2 boxes of things are 3 koji

Claims (1)

[Claims] 1. In a method of processing textile products (hereinafter referred to as fabric) by circulating them in an endless manner, one circulation time of the fabric is detected and a temperature program is determined based on preset processing conditions. When the fabric circulation time increases (fabric speed decreases), the temperature change rate is reduced, and vice versa.The temperature program is automatically corrected for each fabric circulation according to the change. A method for processing textile products, characterized by: 2. In a method of processing textile products (hereinafter referred to as fabric) by circulating them in an endless manner, one circulation time of the fabric is detected, and a temperature program determined based on preset processing conditions is applied to one cycle of the fabric. When time increases (fabric speed decreases), the rate of temperature change is reduced, and vice versa, the temperature program is modified for each automatic fabric cycle and dyes and chemicals are adjusted accordingly. The injection speed is controlled, and the maximum allowable circulation time is set, and when the number of cycles of fabric increases and the set maximum allowable circulation time is reached, the injection of the dye, chemical, etc. is temporarily stopped, and the circulation of the fabric is resumed. A method for processing textile products, characterized by starting control again after confirming that the circulation time has returned to an acceptable circulation time. 3. A transfer pipe, a retention tank, an annular processing passage formed by the transfer pipe and the retention tank, and means for feeding the fabric to be treated to the upstream end of the transfer pipe provided in the passage;
a processing liquid circulation passageway leading from the bottom of the retention tank to an injection nozzle opened at the upstream end of the transfer pipe via a circulation pump;
a temperature control device for the processing liquid interposed in the passage; a measuring object attached to the processed fabric being transferred through the annular processing passage; at least one sensing object corresponding thereto; 1. An apparatus for processing textile products, characterized in that it is provided with means for feeding back measurement results from the body to the temperature control apparatus.