JPH07260771A - Method for testing color fastness for washing and testing apparatus thereof - Google Patents

Abstract

PURPOSE:To make it possible to evaluate the difference in color fastnesses of detergents by inputting a plastic ball, which is protected and wrapped, together with a sample into a washing tank, sealing and supplying the different kinds of the detergents into a water-soluble film, supplying the detergents, and performing the change in colors and contamination caused by washing with good reproducibility in a short time. CONSTITUTION:A plastic ball., which is protected and wrapped, is inputted into a home washing machine 3. A detergent supplying device 2 measures the spacified amounts of the different kinds of detergents and seals the detergents into a water soluble film, respectively. The sealed detergents are supplied in the specified sequence through a detergent feeding pipe 17. A dehumidifier 18a is provided, and the sealed detergents are kept in the dry state. Then, the supply of hot water having the amount matching the weight of the sample, the supply of the sealed detergent having the amount matching the amount of the hot water, washing and the dehydration after the washing, the rinsing, which is performed by supplying the amount of the water matching the weights of the sample by one time or a plurality of times, and the dehydration operation after the rinsing are automatically performed. The series of the operations are performed by changing the samples with the different kinds of the sealed detergents and the color fastnesses in washing are compared and evaluated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method and an apparatus for testing the dye fastness of textiles by washing, and in particular, with the automation of the test process, between detergents of the same type and between different detergents. A method and apparatus for assessing dye fastness by washing in.

[0002]

2. Description of the Related Art A dyeing fastness test for washing tests the degree of discoloration and fading of dyed fibers due to washing and dye transfer to other fibers (contamination of other fibers). Standard) L 0844 "Dyeing fastness test method for washing".

In this test method, a test bottle (100 ml of soap dissolved in 1 liter of water at a rate of 5 g) and a stainless steel ball (in a sealed test bottle (capacity: 500 ml, for example) are used together with one sample. JIS L 0821, for example, 20 pieces with a diameter of about 6.5 mm)
A washing tester specified for "Dyeing fastness washing tester" is used, the inside of the test tank is maintained at, for example, 40 ° C, and a plurality of test bottles (for example, eight) are attached to the washing machine for a predetermined test time ( This is a test method in which this test bottle is rotated (for example, 30 minutes).

The sample used for this test is, for example, 10 cm.
× 5 cm on the surface of the test piece (dyed fiber) 5 cm ×
A 5 cm attached white cloth was arranged and its 4 sides were sewn roughly, and the evaluation after the test was carried out by measuring the discoloration and fading of the test piece and the stain degree of the attached white cloth (the migration degree of the color of the test piece) according to JIS L.
Based on 0801, it is determined using a discoloration / fading gray scale or a contamination gray scale.

Further, FIG. 6 is a front sectional view of an essential part of the structure of a washing tester 1b for dyeing fastness test according to JIS L 0821 used for performing the above test, and FIG. 7 is a side sectional view of the essential part. is there.

In FIGS. 6 and 7, a rotary shaft 33 is provided so as to penetrate almost the center of the test tank 32. Rotating shaft 33
A free wheel 34 is fixed to one end of the motor 1 which is projected to the outside of the test tank 32 of the motor 1.
1b and a speed reducer 35 that is connected to the shaft of the motor 11b and converts the rotation speed of the motor 11b.
6 is fixedly arranged. The shaft of the speed reducer 35 and the rotary shaft 3
The free wheel 34 of No. 3 is connected via a roller chain 37. Therefore, the rotary shaft 33 is driven to rotate about the axis in the direction of the arrow in FIG.

A square tube-shaped fixed base 39 for mounting the test bottle 38 is fixed to the rotary shaft 33 so that the rotary shaft 33 is located at the center thereof. The test bottle 38 is this fixed base 39
The bottoms of the two are closely contacted in parallel with each other and are detachably fixed by a fixture (not shown in detail). The test bottle 38 is specified in JIS L 0844, and this figure shows a glass test bottle used in Method A and Method C in this JIS, that is, an inner diameter of 75 mm, a height of 115 mm and a capacity of about 500 ml.
It is the figure which fixed eight test bottles 38 of.

The test tank 32 has a water tank 40 immediately below the rotary shaft 33, that is, substantially the lower half thereof. A plurality of heaters 23b are horizontally arranged near the bottom of the test tank 32.
A water temperature sensor 41 and a temperature controller (not shown) are used to control the set temperature.

As described above, in the conventional washing tester 1b for dyeing fastness, the test bottle 38 containing the test piece and the test solution is fixed to the rotating shaft 33, and the rotating shaft 33 is rotated at a predetermined rotation speed. The test was carried out by alternately rotating the water tank 40 below the inside of the test tank 32, which was maintained at 40 ° C., and the air tank above the inside of the test tank 32 at approximately 40 ° C., for rotation.

[0010]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention The test method prescribed in JIS (Japanese Industrial Standard) L 0844 "Testing method for dyeing fastness to washing" is as described above in order to test discoloration and fading of samples. It sets special test conditions and tests using an extremely small amount and small sample, that is, it tests the limit of the quality of dyed fiber, and it is not always the case that discoloration or stain occurs due to washing done at home. It does not match.

As a standard for instructing a handling method such as washing at home, there is JISL 0217 "Indication symbol and handling method regarding handling of textile products". This standard shows a test method assuming actual washing with a domestic washing machine in order to evaluate discoloration, contamination, shrinkage, texture, puckering (wrinkles), sewing, etc. . For example, in “Washing method 103”, “Pour water at a liquid temperature of 40 ° C into 2 liters of water per liter.
Add gram of synthetic detergent for clothes (powdered synthetic detergent), dissolve and use this as the washing liquid "," Bath ratio (ratio of washing sample to washing liquid) is 1:30 " , "5 minutes of washing, dehydration, 2 minutes of rinsing, dehydration, 2 minutes of rinsing, dehydration washing operation" are specified.

Generally, it takes a long time for a textile product to discolor and fade due to washing, and contamination occurs in a short time. J
The test of IS L 0217 is for defining various precautions in daily laundry, and thus is a method similar to laundry performed in daily homes. By the test by this method, contamination can be evaluated in a short time and the above-mentioned JIS L 08
Although a tendency relatively close to that of the test method of No. 44 can be obtained, the evaluation of discoloration may take a long time, and shrinkage and puckering may occur, so that the evaluation may be different from that of JIS L 0844 method.

[0013] Therefore, there is a demand for a test method for dyeing fastness to laundry, which is capable of reproducibly causing discoloration and stain caused by washing performed at home in a short time. In addition, many detergents with different ingredients are currently used, and the same sample naturally causes different discoloration and stains depending on the detergent.Therefore, it is possible to easily evaluate the discoloration and stain between different types of detergents. A dye fastness test method was also desired.

Further, there has been a demand for an apparatus for accurately and efficiently carrying out the above dyeing fastness test method for washing.

[0015]

[Means for Solving the Problems] In order to solve the above problems, the following means were adopted. That is, put a plurality of protective packaging plastic balls together with the sample in the washing tub of a domestic washing machine that can be washed, dehydrated and rinsed, measure different kinds of detergents in predetermined amounts and enclose each in a water-soluble film, These enclosed detergents (detergents enclosed in a water-soluble film)
While maintaining the dry state of the enclosed detergent by providing a dehumidifying device, a: supplying hot water in an amount corresponding to the weight of the sample, b: supplying hot water in an amount corresponding to the amount of hot water Supply of detergent enclosed in a water-soluble film, c: washing and dehydration after washing, d: one or more times, rinsing performed by supplying water in an amount according to the weight of the sample and dehydration after rinsing The operation is automatically performed, and after the series of operations e: a to d is completed, the sample is replaced,
A test method for performing this series of operations with different types of encapsulated detergents, wherein the first method is a test method for dyeing fastness to laundry, which is characterized by comparatively evaluating dyeing fastness by washing between different detergents. .

Further, the washing machine, the detergent supply system for supplying the detergent to the washing machine, the detergent supply pipe for supplying the detergent of the detergent supply system to the washing machine, and the inside of the detergent supply system are dehumidified. A test device comprising a dehumidifying device for supplying water to the washing device, a hot water supply device for supplying hot water to the washing device, a water supply device for supplying water to the washing device, and a control device for controlling each device. The detergent supply device is disposed above the washing device, and has a rotating plate that is horizontally rotatable,
A water-soluble film having a rotating device for rotating the rotating plate at a predetermined angle, and a bottom part having a lid which is fixed on the same concentric circle of the rotating plate by penetrating the lower part at a predetermined distance at predetermined intervals and opening downward. It is arranged in contact with each lid and a plurality of cylinders for filling the enclosed detergent, and at least one lid can be opened and closed at one position where each lid contacts when the rotating plate stops. And a fixing plate having an opening of a size, wherein the detergent supply pipe has a horizontal cross section whose upper end is located below and adjacent to the opening and whose lower end is vertically connected to the washing machine. The dehumidifying device comprises the detergent supply device and a dry box having a closed shape covering the upper part of the detergent supply pipe, and a warm air supply device for supplying warm air into the box, and the hot water supply device is the The water supplied to the washing machine is heated to a specified temperature. A hot water tank, a hot water pipe from the hot water tank to the washing machine, a water pump arranged in the pipe, an integrated flow meter for measuring the amount of hot water supply, and a first solenoid valve for closing the pipe by a signal from the flow meter. The water supply device comprises a water supply pipe connected from the water supply port in the middle of the hot water pipe and before the integrating flowmeter, and a second electromagnetic valve that closes the pipe by a signal from the flowmeter arranged in the pipe. The control device includes a valve and the washing operation setting and control of the washing apparatus, and the operation setting and control of the detergent supply apparatus, the hot water supply apparatus and the water supply apparatus associated with the washing operation, and a series of these operations are repeated. A washing tester for dyeing fastness, which performs setting and control for carrying out, was used as the second means.

[0017]

According to the test method of the present invention, "a: supplying hot water in an amount corresponding to the weight of the sample" and "b: supplying the detergent enclosed in the water-soluble film in an amount corresponding to the amount of hot water. ”,“ C: Washing and dehydration after washing ”,“ d: Rinsing performed by supplying water once or a plurality of times according to the weight of the sample and rinsing and dehydration after rinsing ”are similar to ordinary laundry at home Adopting the washing method described above, and in order to put the plastic spheres protected and packaged together with the sample, the above-mentioned JIS L 0844
The same effect of scrubbing as that of the stainless steel balls used in (3) is added to the scrubbing operation, and the details of the sample can be effectively scrubbed.

Also, instead of JIS L 0844 stainless steel balls, plastic balls are used, and because they are protected and packaged, the sample surface is worn during washing and rinsing. It is possible to reproduce the surface condition when the weak fiber is repeatedly washed.

Further, a certain amount of different kinds of powder or granular detergents are weighed and sealed in water-soluble films,
By allowing this to be delivered in a predetermined order, it is not necessary to interrupt the test to check the detergent amount or the detergent type. Furthermore, since the enclosed detergent is maintained in a dry state, dissolution of the water-soluble film and solidification of the detergent due to moisture or dew condensation are eliminated. It should be noted that the water-soluble film is dissolved when it is supplied to the washing tub so that it does not affect the test.

Also, by replacing the sample and performing a series of operations from a to d by supplying different types of enclosed detergents,
A test can be performed to compare and evaluate the dyeing fastness by washing between different detergents.

Further, according to the test apparatus of the present invention, in the detergent supply apparatus, the rotation of the rotary plate is rotated by a predetermined angle so that the opening of the fixed plate and the respective cylinders arranged concentrically are sequentially aligned. Therefore, the lid of one cylinder opens downward at this opening position, and the detergent enclosed in the water-soluble film filled in the cylinder is supplied to the washing machine through the detergent supply pipe.

If the water-soluble film is filled with the same amount of detergent in each cylinder, the rotary plate is rotated until the amount required for the test is reached, and the detergent contained in the cylinder is sequentially filled. To provide the required amount for the test. Of course, the amount of detergent required for one test may be enclosed in a water-soluble film and filled in each cylinder.

Since detergents are generally hygroscopic, they may harden depending on the humidity during the test or the humidity of the outside air.
Since the detergent is enclosed in the water-soluble film, the supply of the detergent due to the solidification of the detergent does not occur. However, when dew condensation occurs in the cylinder in the test for a long time, the water-soluble film may be dissolved.

Therefore, a sealed drying box which covers the entire detergent supply device and the upper portion of the detergent supply pipe is provided, and hot air is blown into the drying box to store the enclosed detergent in the supply device. Since the pressure inside this box becomes higher than the pressure inside the washing machine due to the introduction of warm air, the humidity from the washing machine that raises the detergent supply pipe enters the box. Can be prevented, and a further moisture-proof effect can be obtained. or,
Since the detergent is supplied through the detergent supply pipe, it is not necessary to open the lid of the washing machine, so that moisture during the test does not diffuse to the surroundings.

If the test is carried out by using this apparatus with the plastic spheres protected and packed together with the sample, the above-mentioned test method can be carried out accurately and easily.

[0026]

The method for testing dyeing fastness by washing and the testing machine of the present invention will be described below with reference to the drawings. FIG. 1 is an example of a washing tester 1a for performing a dyeing fastness test for washing according to the present invention, a schematic view showing the front thereof, FIG. 2 is a schematic view showing the side of FIG. 1, and FIG. 3 is this washing tester 1a. 3 is an enlarged perspective view of the detergent supply device 2 provided in FIG. The washing apparatus 3 used in the washing tester 1a of the present embodiment has substantially the same configuration as a commercially available electric washing machine that can be washed, dehydrated and rinsed in the same tank.

The detergent supplying device 2 for supplying a predetermined amount of detergent to the washing device 3 has a circular disk-shaped rotating plate 4 on the same concentric circle and a cylinder made of a transparent plastic pipe and having the same size. A plurality of bodies 5 (for example, 12
And the lower portion of the same is penetrated and fixed, and a lid 6 that opens downward is attached to the bottom of each tubular body 5. Further, a fixed plate 7 which is the same as the rotary plate 4 is attached to a fixed base 9 which is fixed to a partition plate 8 so that the fixed plate 7 is in contact with the lid 6 of each cylindrical body 5 and the center of the fixed plate 7 is aligned with the center of the rotary plate 4. is there. A rotary shaft 10 is fixed to the center of the rotary plate 4, and the rotary shaft 10 penetrates through a small hole (not shown) in the center of the fixed plate 7 and its lower end and a motor 11a on a fixed base (not shown).
Is connected to the shaft via a timing belt 12, and the rotating plate 4 is rotated by the rotation of the motor 11a. Further, the position detectors 13 are respectively provided on the periphery of the rotary plate 4 on a straight line connecting the center of the rotary plate 4 and the center of each cylindrical body 5.
The detection plate 14 (which uses a reflective photosensor in this embodiment) is fixed, and when it crosses the position detector 13 arranged in the vicinity of this periphery, the motor 11a is stopped,
The rotation of the rotary plate 4 is stopped. The fixed plate 7 has a lid 6 for each cylinder 5 when the rotary plate 4 is stopped.
An opening 15 having a size large enough to open and close the lid 6 is provided at one of the locations where the lid 6 contacts.

Further, in the cylindrical pipe having a horizontal cross section larger than the opening 15, the upper part thereof penetrates the partition plate 8 of the main body,
The upper end of the pipe is located in the vicinity of the lower part of the opening and the lower end is connected to the rear of the upper surface of the washing machine 3, and the central axis of the pipe and the center of the opening 15 are aligned and arranged vertically. The supply pipe 17 is used.

Therefore, if a predetermined weight of powdery or granular detergent is enclosed in a water-soluble film (enclosed detergent 16) and this is filled in the cylindrical body 5 of the detergent supply device 3, By rotating the rotating plate 4 at a predetermined angle, the cylindrical body 5 is sequentially stopped on the opening 15 of the fixed plate 7. Here, since the lid 6 at the bottom of the tubular body 5 opens downward, the enclosed detergent 16 filled in the tubular body 5 passes through the detergent supply pipe 17 and falls into the washing machine 3. Further, if the amount of the enclosed detergent 16 is set as a prescribed amount, one enclosed detergent may be supplied in one test, but by supplying the prescribed amount of the enclosed detergent 16 multiple times, the prescribed amount can be applied. You may. Here, as the water-soluble film, for example, a synthetic resin film (trade name: Clarevinylon film) made of polyvinyl alcohol is suitable. still,
The cylindrical body 5 fixed to the rotating plate 4 may be used not only as the enclosed detergent 16 but also as a powder or granular detergent as it is.

In general, powdery or granular detergents have hygroscopicity, so they may harden depending on the humidity during the test or the humidity of the outside air. When the detergent is enclosed in a water-soluble film as in the detergent supply device 2 described above, the supply cannot be stopped due to solidification. However, if dew condensation occurs in the cylindrical body 5 in the test for a long time, the water-soluble film may be dissolved.

Therefore, it is necessary to provide the dehumidifying device 18a. The dehumidifying device 18a of the present embodiment is a device for eliminating this effect. The dehumidifying device 18a covers a box having a rectangular parallelepiped shape whose one surface is open and covers the upper portions of the detergent supply device 2 and the detergent supply pipe 17, and the open surface is the main body. Warm air provided with a drying box 19 fixed to the partition plate 8 so as to be hermetically sealed by the partition plate 8, and a blower 20 provided on the partition plate 8 outside the drying box 19 and a heater unit 21 connected thereto. A hot air supply device 18b including a pipe 22 is provided, and the end of the hot air pipe 22 is connected to the inside of the drying box 19. Therefore, by sending hot air into the drying box 19 during the test, the enclosed detergent 16 and its water-soluble film filled in the detergent supply device 2 can be kept in a dry state. Moreover, the pressure in the drying box 19 is changed by the warm air being blown into the washing machine 3.
Since the pressure is higher than the internal pressure, it is possible to prevent the moisture from the washing machine 3 rising the detergent supply pipe 17 from entering the box 19.

FIG. 4 is a piping system diagram of hot water supply and water supply of this apparatus. The hot water supply and water supply of this embodiment will be described with reference to this figure.

The hot water supply device 50a is disposed at the rear of the washing device 3, has a heater 23a at the bottom, a temperature controller (not shown) inside, and a pump 2 for circulating and stirring the water inside.
4a and the like, a hot water tank 25, and a hot water pipe 26 from the hot water tank 25 to the washing machine 3. The hot water pipe 26 pumps the hot water in the tank 25 under pressure, and the hot water passing therethrough. The flow rate of can be set in increments of 1 liter, for example, and an integrated flow meter 27 that emits a signal when measuring up to the set flow rate is arranged. With this signal, the solenoid valve 28a arranged in the pipe is closed. There is. Water is supplied to the hot water tank 25 by a signal from a water level detector (not shown) provided in the tank with a solenoid valve 28b provided in the middle of a pipe connecting the water supply port 29 such as a tap and the tank 25. Perform 0N-OFF. Also, the water supply device 5
Reference numeral 0b includes a water supply pipe 30 connected from the water supply port 29 in the middle of the hot water pipe 26 and before the integrating flow meter 27, and a solenoid valve 28c that closes the piping 30 by a signal from the integrating flow meter 27. The electromagnetic valve 28d operates when the washing machine 3 drains water.

The control device 31a is, for example, "a.
Using a solution of 2 g of detergent per liter of warm water at 40 ° C for 5 minutes at a bath ratio of 1:30 "," b. Dehydration 1:
2 minutes "," c. Rinse 1: with water at room temperature, bath ratio 1:30
2 minutes "," d. Dehydration 2: 2 minutes "," e. Rinse 2: Water at room temperature for 2 minutes at a bath ratio of 1:30 ", and" f. Dehydration 3: 2 minutes ". In order to perform automatically, the setting and control of the washing operation of the washing device 3 and the setting and control of the operation of the detergent supply device 2, the hot water supply device 50a and the water supply device 50b associated with the washing operation are performed.
For example, a microcomputer (not shown) provided in the control panel 31b is used to set and control the operation of each of the above devices.

Now, the setting procedure of the control device 31a of this embodiment according to the above procedure will be described. The test uses a fiber sample of about 1 kg, and two kinds of detergents (for example, soap and weak alkaline synthetic detergent) are sealed in a water-soluble film in units of 30 g each. With this enclosed detergent 16,
The same type is filled in the adjacent cylinder bodies 5 of the detergent supply device 2 one by one. The attached white cloth is sewn on the fiber sample. A. Hot water supply: Set the hot water temperature to 40 ° C and the water supply amount to 30 liters. I. Water supply: Water supply is set to 30 liters. C. Detergent supply amount: Set to the number of movements of the rotating plate 2 times (rotation is performed twice at a predetermined angle). D. Washing time: Set to 5 minutes. E. Rinse time: Set to 2 minutes. F. Dehydration time: Set to 2 minutes. G. Number of tests: Set to 2 times. Ku. Rest time: 10 minutes. K. Dehumidifier (warm air supply device): set to ON.

When the above-mentioned a to k are set and a start switch (not shown) is turned on, as shown in FIG.
After a 10-minute pause, the test is started again in the order from a to f, and a different type of detergent is supplied in the above c. Also, the sample is taken out during this rest time and the next sample is put in. The controller is preprogrammed with hot water supply operation and detergent supply operation before washing, and drainage operation before dehydration.

Next, the washing tester 1a is used.
An example of a dyeing fastness test method for washing will be described.
The sample used for the test has a size of 1 m x 1.2 m, and J
10c of attached white cloth (white cotton) specified in ISL 0803
A size of m × 5 cm, 6 pieces of which are sewn at appropriate intervals are used, and a load cloth (the same as the attached white cloth) is added to make 800 g. The bath ratio of the sample to the washing liquid is 1:30, and the detergent is 2 g per 1 liter of water. Also, plastic spheres (for example, made of nylon or polypropylene) having a diameter of about 20 mm are put in a bag of about 7 cm × 7 cm made of attached white cloth, and 10 of these are used.

Experimental Example 1 A plain weave rayon dyed (dipped) was used as the above-mentioned sample, and as a detergent, a synthetic detergent specified by JIS JIS K 3371 (weakly alkaline first type of synthetic detergent for clothing) and 24 g of soap each were dissolved in water. 4 in the detergent tester 1 of the washing tester 1 and the four adjacent tubular bodies 5
Then, the synthetic detergent was continuously filled into the two tubular bodies 5, and then the subsequent two tubular bodies 5 were filled in one package each, and the test was conducted under the following conditions. a. Washing: 5 minutes (dissolve 2g of detergent per liter in warm water at 40 ° C at the time of supply, bath ratio 1:30, amount of hot water 2
4 liters) b. Dehydration after washing: 2 minutes, c. Rinse: 2 minutes (bath ratio 1:30 with normal temperature water,
Water volume 24 liters), d. Dehydration after rinse: Repeat c and d twice for 2 minutes. e. After a 10 minute rest (replacing the sample during the rest),
Repeat steps a to d.

Further, the washing tester 1a was set in the same manner as the above-mentioned steps A to A so that the test example 1 could be tested by one operation. However, in A, the hot water supply is 24 liters, in A, the water supply is 24 liters, and in C, the rotating plate is moved 2 times.
Set to times.

The test results of Experimental Examples 1 and 2 are shown in Table 1. As for the evaluation of the test results, "Grayscale for Contamination" specified in JIS L 0805 for contamination, and JIS L 0805 for discoloration and fading
It was performed using the “gray scale for discoloration and fading” specified in 0804. The contamination is the average value of the above 6 attached white cloths,
The discoloration and fading was the average value at the positions (6 places) where the attached white cloth was removed. In addition, in Table 1, the same sample is JIS L 0
The evaluation after repeating washing method "103" of 217 three times and the evaluation after performing JIS L 0844 "C-1 method" are also described. The size of the sample is the above JIS
L 0217 has the same size as the experimental example, and JIS L 0844 has the specified size.

[0041]

[Table 1]

Experimental Example 2 Dyeing (dyeing) raised rayon was used as the above sample,
The same test as in Experimental Example 1 was performed. The results are shown in Table 2 as in Table 1.

[0043]

[Table 2]

According to the method of the present invention in Experimental Examples 1 and 2, the difference in dyeing fastness to washing with detergent can be easily evaluated.

Further, in the case of Experimental Example 2, collapse and abrasion of raised hair occurred. This was a tendency similar to the repetition of daily washing, and showed the same tendency as the case where the test of JIS L 0217 was repeated 3 times. Also, the test time is JI
It was one-third of the case where the test of the SL 0217 method was repeated three times, and the discoloration and fading was more than 0.5 grade in the method of the present invention.

In addition, in both Experimental Examples 1 and 2, contamination is described in JI above.
Almost the same results as the SL 0844 method were obtained, and JIS L
It was about 0.5 class stronger than the 0217 method.

[0047]

According to the dye fastness test method for laundry of the present invention, discoloration and stain caused by daily household washing can be reproducibly performed in a short time and dye fastness between different detergents can be improved. The difference in degree can be easily evaluated.

Further, since detergents generally have a hygroscopic property, they may be solidified by the humidity during the test or the humidity of the outside air, and in many cases, they adhere to a device for supplying the detergent. Therefore, if you try to repeatedly supply detergent with conventional equipment,
Due to the adhesion, the amount of detergent supplied was different, and an accurate test could not be performed.

According to the present invention, since the dehumidifying device is provided to cover the detergent supplying device and the detergent is filled in the water-soluble film, the detergent in the supplying device is not moistened and the detergent can be supplied accurately at all times. You will be able to do various tests.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing the configuration of a washing tester for performing a dyeing fastness test of the present invention.

FIG. 2 is a side view of FIG.

3 is an enlarged perspective view of a detergent supply device used in the device of FIG.

FIG. 4 is a diagram illustrating a hot water supply device and a piping system of the water supply device.

FIG. 5 is an example showing an operation during a test of the device of the present invention.

FIG. 6 is a front view of a main part of the structure of a washing tester for dyeing fastness test according to JIS L 0821.

FIG. 7 is a side view of FIG.

[Explanation of symbols]

 1a Washing tester 2 Detergent supply device 3 Washing device 4 Rotating plate 5 Cylindrical body 6 Lid 7 Fixing plate 16 Enclosed detergent 17 Detergent supply pipe 18a Dehumidifying device 31 Control device 50a Hot water supply device 50b Water supply device

[Reference number] 0605T001

Claims (2)

[Claims] 1. A plurality of protectively packed plastic balls are put together with a sample in a washing tub of a domestic washing machine that can be washed, dehydrated and rinsed, and different kinds of detergents are weighed in predetermined amounts to form water-soluble films. Encapsulate and supply these encapsulated detergents (detergents encapsulated in a water-soluble film) in a predetermined order. While maintaining the encapsulated detergent in a dry state by providing a dehumidifying device, a: an amount according to the weight of the sample Supply of hot water, b: supply of detergent enclosed in a water-soluble film in an amount corresponding to the amount of hot water, c: washing and dehydration after washing, d: one or more times, an amount of water according to the weight of the sample Automatically perform a series of operations of rinsing and dehydration after rinsing, and after the series of operations e: a to d is completed, the sample is replaced,
A test method for carrying out this series of operations with different types of encapsulated detergents, wherein a test method for dyeing fastness to laundry is characterized by comparatively evaluating dyeing fastnesses by washing between different detergents. 2. A washing device, a detergent supply device for supplying detergent to the washing device, a detergent supply pipe for supplying detergent of the detergent supply device to the washing device, and dehumidifying the interior of the detergent supply device. A test device comprising a dehumidifying device for supplying water to the washing device, a hot water supply device for supplying hot water to the washing device, a water supply device for supplying water to the washing device, and a control device for controlling each device. The detergent supply device is arranged above the washing device, and has a horizontally rotatable rotating plate, a rotating device that rotates the rotating plate at a predetermined angle, and the rotating plate at the same concentric circles at equal intervals. A plurality of cylinders for fixing the detergent which penetrates the lower portion for a predetermined length and having a lid that opens downward, for filling the detergent enclosed in a water-soluble film, and arranged in contact with each lid. Yes, at one of the positions where each lid comes into contact when the rotating plate stops , A fixing plate having at least an opening of a size capable of opening and closing each lid, the detergent supply pipe,
The upper end of the dehumidifier has a horizontal cross section whose upper end is located below and adjacent to the opening and whose lower end is vertically connected to the washing machine, and the dehumidifier has an upper portion of the detergent supply device and the upper portion of the detergent supply pipe. A drying box having a closed and covered shape, and a hot air supply device for supplying hot air into the box, the hot water supply device is a hot water tank for adjusting the temperature of water supplied to the washing machine to a predetermined temperature, A hot water pipe from the hot water tank to the washing machine, a water pump arranged in the pipe, an integrated flow meter for measuring the amount of hot water supplied, and a first solenoid valve that closes the pipe by a signal from the flow meter. The device comprises a water supply pipe connected from the water supply port in the middle of the hot water pipe and before the integrating flowmeter, and a second solenoid valve that closes the pipe by a signal of the flowmeter arranged in the pipe, The controller is Setting and controlling the washing operation of the washing machine, setting and controlling the operation of the detergent supply apparatus, the hot water supply apparatus and the water supply apparatus associated with the washing operation, and setting and control for repeating these series of operations. A washing tester for dyeing fastness characterized by.