Button testing method introduced
British standard button test method description Button test including anti-wear test, button strength test, corrosion resistance of wash liquid, wash liquid corrosion resistance, dry cleaning solvent corrosion resistance, steam ironing resistance, resistance to hot performance, heat pressure head Pressing performance and so on. Want to learn more about buttons: accessible Super Soft Fabric,Super Soft Cotton Fabric,Super Soft Material,Super Soft Fleece Fabric Jiangyin Xiangxu Textile Co., Ltd. , https://www.xiangxufabric.com
1. Scope This method is suitable for testing various buttons on clothing.
Note 1 The test can not be directly used in actual laundry and dry cleaning, because other factors such as mechanical factors cannot be repeated in a small area, but this method can be used to detect whether the button is suitable for certain specific or general purposes.
2. Sampling Batch sampling for each test shall be performed as follows (except for strength tests):
1000 buttons randomly take 5 samples 1001-10,000 buttons 1000-2000 randomly selected 5 samples, each increase of 1000 random increase of 10 10,001-100,000 buttons 10,001-100,000 randomly selected 15 samples, randomly increasing 1 in 100,001 buttons and 100,001 to 1000,000 randomly selected 25 samples in increments of 10,000, and adding 100 in random increments for each additional 100,001 pieces. Test samples should be taken from the same batch as possible. The intensity measurement (clause 4) requires the above steps in addition to the minimum number of samples required for 10 buttons.
3. Determination of abrasion resistance 3.1 General This test is used to determine various types of buttons on ordinary clothing.
3.2 Principle The button is mixed with a certain amount of pumice powder and placed in a cylinder for a few revolutions per minute for a limited time. Then detect the external change of the button.
3.3 Apparatus and equipment 3.3.1 PVC cylinder inner diameter 105mm, length 70mm, with cover. A 60-rpm fractional horsepower motor is mounted horizontally on the drum.
3.3.2 Pumice powder is dried, commercial grade, for example, with an average diameter of less than 425 μm.
3.3.3 Balance measurement accuracy to 0.1g.
3.3.4 fine sieve aperture of about 6.7mm.
3.3.5 Soft brush or whisker 3.4 Steps Weigh out 50g and place it in the cartridge along with the following sample:
(a) 11-25mm buttons, five;
(b) 26-38mm buttons, three.
Cover the cap and rotate for 30 minutes at 60 rpm. Remove the cap, pour the pumice and buttons on the fine screen, sieve the buttons, and brush the powder on the buttons with a soft brush. Repeat the same test procedure and examine all button samples.
Carefully compare the difference between samples and untested buttons.
If the appearance of the button does not show any change under the light of the northern sky, it is considered as passing the test.
Explanation 1. In the northern hemisphere, the button surface illumination uses a northern sky light (half south of the southern hemisphere) or a similar light source with a brightness of 6001× or more. Light from the direction of the top of the button about 45 °, along the vertical direction of the button to the visual inspection of the horizontal direction.
Description 2. Replace pumice powder with each batch of button samples.
3.5 Test report The test report should include the following aspects:
(a) test results, passed or failed;
(b) Give opinions and suggestions on this standard;
(c) What deviations and detailed data are present using this test method.
4. Strength Test 4.1 General This test measures the load-carrying capacity of all types of buttons (diameter 10mm or more) during strong clothing or daily use during strong pull or impact.
4.2 Principle (a) When testing the hardness of the button, gradually increase the tension load on the button until a crack appears on the surface of the button; (b) Release the hardness of the pendulum test button of a certain quality from a certain height.
4.3 Instruments and Equipment 4.3.1
Tension 4.3.1.1
The mechanical transmission tension gauge chuck spacing is 6.35mm/min.
4.3.1.2
Clamp the fixture around the button (see Figure 1)
4.3.1.3 The 1.6mm electrode is shown in Figure 1. It can be threaded through the hole in the button and attached to the clamp. Different types of buttons can be used for horizontal pull testing.
4.3.1.4
The clamps always hold the end of the electrode during the test.
4.3.2
Impact 4.3.2.1
Izod type collision device (see Figure 2).
4.3.2.2 Button clips of a size suitable for fixing buttons (see figure 2) 4.4 Test samples Ten buttons are randomly selected for each test.
4.5 Step 4.5.1
Tension passes the electrode through the button hole of the button under test (the four-hole button passes through the two buttonholes in the diagonal line; the handle button passes through the button handle). The button and electrode were installed on the tension meter, and the pressure load on the button was gradually increased until the button or the buckle was broken, and the number of newtons under pressure was recorded. The remaining button samples use the same test method.
Calculate the pressure average and record the minimum and maximum values.
Explanation Normally the maximum and minimum values ​​do not exceed 25% of the mean. For example, the average is 100N and the error should not exceed a minimum of 75N and a maximum of 125N.
4.5.2
The impact force fixes the button to be measured on the proper size clamp and faces the pendulum. The four-hole button leaks two holes, and the two holes reveal a hole. After fixing the button, close the clamp and use the supplied screwdriver to install all the components on the impactor's countertop. When testing a button smaller than 15mm, raise the pendulum to position 2 and the big button needs to go to position 1.
Release the handle, release the pendulum and strike the button. Record whether the button has broken, cracked or deformed. Repeat the test until all button samples have been tested.
4.6
Buttons that have been tested for tensile and/or impact forces on pass or fail conditions need to meet the following conditions:
(a) Tensile test buttons should be classified as "light" and "heavy" according to their tensile strength and diameter. Refer to Table 1; (b) In the impact test, the buttons should not be broken, broken or deformed.
Table 1 average pull strength value button diameter average pull strength (min.)
Lightweight heavy mm
Greater than 13
13 and 16 or less 16 and 23 or less 23 and 30 or less N
65
90
110
130
N
130
155
180
200
4.7 Test report The test report shall contain the following items (a) Button strength (see 4.6)
(b) Give opinions and suggestions on this standard;
(c) Details of the deviations that occurred using this test method.
5. Corrosion resistance of washable liquids 5.1 Overview This test measures the corrosion resistance of various types of buttons on laundry liquids at 40°C, 50°C, 60°C or 95°C. These temperatures cover everything from gentle to strong washing in the laundry process.
5.2 Principles Buttons and standard multi-fiber lining fabrics, together with laundry detergent or laundry detergent, are placed in a washing machine and agitated at a certain temperature, rinsed and dried. Grey cards were used to compare the color of the buttons and the fading of the fabric.
5.3 Equipment and reagents 5.3.1 Automatic drum washing machine, see Annex A.
5.3.2 Beaker, or similar container, with a capacity of 750mL, can hold boiling water and can hold all the tested substances.
5.3.3 Method of heating the beaker 5.3.4 Thermometer, range 0 °C -100 °C.
5.3.5 pockets equipped with corrosion-resistant steel balls. Unstained square cotton twill, approximately 100mm x 100mm, is sewn together on four sides and contains 10 anti-corrosive balls with a diameter of 6mm.
5.3.6 Gray Card, refer to British Standard BS 1006, Articles A02 and A03.
5.3.7 Multi-fiber lining fabric width 100mm.
5.3.8 Soap, containing 5g of soap per litre of deionized water (cf. British Standard BS1006, Part C03) and 2g of soda.
Soap can also refer to British Standard BS1912.
5.3.9
The detergent solution contains 4g of detergent per litre of deionized water (cf. British Standard BS 1006, Part C06) and 1 g of soda ash.
5.4
The combined samples were sewn with buttons (not more than 5) to be tested at equal distances from the center of the first textile fabric. The second textile was covered on it and the fabric was sewn with threads around the buttons and between the buttons. Prepare the remaining button under test in the same way.
Explanation 1 Larger buttons may require more preparation of a combined sample. Each combined sample needs to be tested individually.
5.5
The sequence of steps to detect each combination of samples, as follows:
Put enough soap (5.3.8) or laundry liquid (5.3.9) into the beaker to warm the washing machine half-cylinder to 40°C, 50°C, 60°C or 95°C or other desired temperature.
Put the combined sample and two bags of steel balls together. Heat the liquid in the beaker so that it reaches the test temperature of +2°C in two minutes and pour it into the washing machine. When the temperature dropped to the test temperature, the lid of the washing machine was turned off and operated at a speed of 35±2 rpm for 30 minutes.
The combined sample was picked from the solution, washed with water and hung to dry. Both washing and drying should be performed at room temperature (about 20°C).
Separate the two fabrics and test separately. It is permissible to wipe any deposits that might remain on the surface of the button with a dry cloth.
Use gray cards to compare button color changes and fabric fading.
Check the damage of the button, such as: softening, swelling, blistering, cracking, broken or faded.
5.6
Passed or failed conditions are considered to pass if they meet the following conditions:
(a)
When using a gray card to detect color changes, the button's color fastness should not be less than 4.
(b)
When using a gray card to detect the color change of the textile, the color spot of the fabric should not be less than 5.
(c)
No distortion or other flaws.
5.7
The test report test report must contain the following items:
(a)
Test results, passed or failed;
(b)
Detection temperature;
(c) Give opinions and suggestions on this standard;
(d) Details of the deviations that occur using this test method.
6. Dry Cleaning Solvent Corrosion Overview This test measures the corrosion resistance of all types of buttons to dry cleaners.
Principle Buttons and multi-fiber lining fabrics are placed together with the dry cleaning agent at a certain temperature, after which time it is taken out and allowed to dry. Grey buttons were used to compare the color change of the buttons and the fading of the fabric.
Equipment and reagents The equipment used for the dry cleaning agent used in industrial clothing described in 5.3.1 and 5.3.7 uses the trichloroethene specified in Class 1 of BS580; the button used for decoration uses the vinyl chloride specified in BS 1593.
Warning Description 1 Be careful. Because these reagents are volatile, it is harmful to the human body.
Warning Statement 2 Dry-cleaning wastewater cannot be dumped into public drains.
6.4
Combine the specimen from the button to be tested as described in 5.4.
6.5
Step by step to detect the combination of samples, as follows:
Pour the combined sample and two bags of steel balls into the drum of the washing machine. Put enough dry cleaning agent to clean the half-cylinder clothes into the beaker and heat it to 35°C～36°C. Pour into the washing machine and quickly check the temperature to ensure the temperature is 32°C～34°C. Close the lid of the washing machine and run at 35±2 rpm for 30 minutes.
Take out the combined sample and allow to dry at room temperature (about 20°C).
The two fabrics were disassembled and tested separately. It is permissible to wipe any deposits that might remain on the surface of the button with a dry cloth.
Use gray cards to compare button color changes and fabric fading.
Check the damage of the button, such as: softening, swelling, blistering, cracking, broken or faded.
Explain that it is best to dry clothes in a fume hood.
6.6 Passed or failed conditions are considered to pass if they meet the following conditions:
(a)
When using a gray card to detect color changes, the button's color fastness should not be less than 4.
(b)
When using a gray card to detect the color change of the textile, the color spot of the fabric should not be less than 5.
(c)
No distortion or other flaws.
6.7 Test report The test report shall contain the following items:
(a)
Test results, passed or failed;
(b) Give opinions and suggestions on this standard;
(c) Detailed data of deviations that occurred using this test method.