JPS5951618B2 - How to measure the degree of dyeing - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for measuring the degree of dyeing. The present invention provides a method for measuring the degree of dyeing of yarn with high accuracy.

When textile materials are dyed, the degree of dyeing is influenced by the various history of the fibers.

A method is used to utilize this fact to solve problems in the fiber manufacturing process and obtain data for quality control.

Generally, the degree of dyeing is tested by knitting and weaving yarn and dyeing it, which is a complicated and time-consuming process.

In order to solve this problem, the present inventor developed a method of thread rolling and dyeing, and continuously measuring the degree of dyeing.
This was proposed in Japanese Patent Application Laid-Open No. 49-75900.

This is particularly problematic when using yarn for crimping, as uneven dyeing tends to be more noticeable than when using yarn for textiles.
For this reason, we conduct a complete inspection.

However, the work of measuring a large number of sample yarns and processing the samples is extremely complicated, prone to errors, and requires a large product stock area due to significant time lag. There was a problem.

When trying to dye a plurality of sample yarns in series and measure the degree of dyeing for the purpose of understanding the physical properties of the yarn, it is necessary to always dye each sample yarn under the same conditions.

However, the degree of dyeing of yarn generally varies slightly depending on various conditions such as scouring conditions, dye concentration, degree of dye dispersion in the dyeing bath, dyeing solution temperature, dyeing time, and washing time. It is almost impossible to keep it constant all the time.

Therefore, even if the sample yarn is exactly the same, the measured values may vary if measured on different days.

Furthermore, even in a series of measurements performed on the same lot, for example, as the concentration of the dye gradually decreases, the dyeing conditions for the first and last sample threads connected in series become different. Even if the same sample yarn is used, the degree of dyeing may vary.

The present invention was obtained in order to solve the above-mentioned problems, and continuously supplies a sample yarn and a standard yarn connected in series so that the standard yarn is at a desired position in the longitudinal direction. a step of dyeing the supplied sample yarn and standard yarn; a step of detecting knots between the sample yarns or the sample yarn and the standard yarn; and a step of measuring the degree of dyeing of the dyed sample yarn and standard yarn. and the method for measuring the degree of dyeing is characterized in that the measurement of the degree of dyeing is carried out between detecting the knot and detecting the next knot.

In the present invention, the sample yarn and the standard yarn are connected and dyed so that the standard yarn is at the desired position in the longitudinal direction, so even if the dyeing conditions etc. change, the standard yarn can be measured. The measured values of the sample yarn can be corrected from the values and the problems mentioned above do not occur.

In other words, the standard value is calculated by connecting the measured values of two standard threads, and the drift of the measured value is removed by interpolating the measured value of the sample thread between the two standard threads. This means that the correction can be made.

Therefore, it is extremely important for measurements to be able to correct measured values.

Furthermore, the fact that the measured values can be corrected also means that the settings for staining conditions and the like can be made roughly, making measurement preparations much easier.

Furthermore, in the present invention, a knot is used, and the degree of dyeing is measured between the time a knot is detected and the time the next knot is detected.

Therefore, the measured values obtained are separated from each other corresponding to each sample yarn and standard yarn, and not only is it extremely easy to correspond to each other, but also the knot part (where the measured values are greatly disturbed) can be measured. Since it is not expressed as a value, it is easy to analyze.

The present invention will be described in detail below with reference to the drawings.

FIG. 1 is a schematic diagram of an apparatus for implementing the present invention, in which 1 is a sample cheese and 2 is a standard thread cheese.

The sample cheese 1 is supplied to the splicer 3 and spliced into one thread, and standard threads are spliced at both ends of the thread and at appropriate locations as required.

For example, standard yarns are connected at the beginning and end of sample yarns connected in series, sample yarns and standard yarns are connected alternately in series, or multiple sample yarns are connected in series and the same yarn is connected in series. Further, the sample thread and the standard thread are connected in series such that the standard thread is at a desired position in the longitudinal direction.

The yarn Y thus connected is dyed in the dyeing device 5, but it may also be supplied from the cheese 4 to which the sample yarn has been connected in advance.

The thread Y dyed in the dyeing device 5 as described above is supplied to a dyeing degree detector 8 via a thread breakage detector 6 and a knot detector 7.

Note that the knot signal and thread cutting signal obtained by the above device are supplied to the dyeing degree detector 8 to control it.

The dyeing degree detector 8 uses the device described in Japanese Patent Application Laid-Open No. 49-75900.A data processing section built into this dyeing degree detector further adds a knot signal to the signal of the device, and calculates this signal. The yarn data is configured to be distinguished for each sample yarn based on the knot signal.

The dyeing equipment has three tanks: refining, dyeing, and washing, and each tank is equipped with a Nelson roller to retain long yarns.

The various temperatures in this case are, for example, when dyeing polyester yarn, the scouring tank is 90°C, the dyeing tank is 90°C, and the washing tank is 70°C, and the concentration of the dye solution is 1oooo to 100°C in weight ratio of the yarn.
100,000%, the bath ratio is maintained at 5,000 to 100,000, and the residence time in the dyeing tank is preferably 1.5 to 3 minutes.

That is, after the scouring tank is maintained at a temperature equal to or higher than that of the dyeing tank to thermally stabilize the physical properties of the yarn, the dyeing process is carried out in an extremely short time using a dye solution of high concentration and high bath ratio.

Fig. 2 shows the relationship between various signals and yarns having knots, where yarn Y is two standard yarns STD and a sample yarn Y1. Consists of Y2......

The standard yarn STD is provided to significantly improve the accuracy of measurement, and is inserted before, during, or before measuring sample yarn to correct drifts in measured values caused by changes in the meter, dye concentration, and dyeing conditions. There is.

More specifically, a standard value is calculated by connecting the measured values of two standard yarns STD, and by interpolating the measured values of individual sample yarns, the drift of the measured values can be corrected.

Now, when measuring the degree of dyeing using the above-mentioned device, the measurement is started with the knot signal B in Fig. 2, data processing is performed, that is, processing of dyeing difference, staining spot, and statistical data, and sample classification is performed. do.

In other words, the measurement is completed before the next knot is detected, and the previous measurement has been completed by the time the next knot is detected.

In this way, a knot is used to measure the degree of dyeing between the time a knot is detected and the time the next knot is detected.

Further, the above-described means corrects the drift of the measured value or detects the difference between the values of the sample yarn and the standard yarn.

Note that the signal C is a thread trimming signal, which is generated when a thread is trimmed, and processes such as stopping the device are performed based on this signal.

Signal 1 is a measurement gate signal, which is generated every knot signal B.

Signal E is a take-off signal and indicates a state in which the take-off device is stopped by the thread cutting signal C.

Using the measurement data obtained as described above, each yarn is sorted, and the lots are managed using the average value of a certain sample unit (lot) as a standard value.

In the present invention, as the yarn to be measured, a sample yarn and a standard yarn are connected in series so that the standard yarn is at a desired position in the longitudinal direction. Therefore, it is necessary to correct the drift included in the measured value. The degree of dyeing of each sample yarn can be measured with high precision.

In addition, in the present invention, knots are used to measure the degree of dyeing between the detection of a knot and the detection of the next knot, so the measured values obtained correspond to each sample yarn and standard yarn. They are separated from each other, making it extremely easy to deal with the two, and it is also easy to analyze because the knot does not appear as a measured value.

In addition, since data can be output continuously and sorted, there is no need to temporarily stock products and sort them after various tests and tests, as in the past, so you can manage the process itself. This eliminates the need to keep the product in stock.

According to the present invention, since staining data can be obtained continuously, the inspection line can be brought online, and the data can be immediately fed back to the process, so process control can be performed accurately and losses can be reduced. can be minimized.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram of an apparatus for implementing the present invention, and FIG. 2 is a diagram showing the relationship between sample yarn and various signals. 1... Sample cheese, 2... Standard thread cheese, 3... Yarn splicer, 4... Cheese, 5... Dyeing device , 6... Thread breakage detector, 7... Knot detector, 8... Dyeing degree detector.

Claims (1)

[Claims] 1. A step of continuously supplying a sample yarn and a standard yarn connected in series so that the standard yarn is at a desired position in the longitudinal direction, a step of dyeing the supplied sample yarn and standard yarn, and a step of dyeing the sample yarn and the standard yarn. The method includes a step of detecting a knot between the yarns or a sample yarn and a standard yarn, and a step of measuring the degree of dyeing of the dyed sample yarn and the standard yarn, and measuring the degree of dyeing involves detecting the knot. A method for measuring the degree of dyeing, characterized in that the measurement is carried out between the time when the next knot is detected.