GB/T 4802.1-1997 Textiles-Determination of pilling of fabrics-Circular locus method

This standard specifies the method for determining the pilling properties of fabrics under slight pressure. This standard is applicable to all types of textile fabrics. GB/T 4802.1-1997 Textile fabric pilling test circular locus method GB/T4802.1-1997 Standard download decompression password: www.bzxz.net

1cS59.080.30
National Standard of the People's Republic of China
GB/T4802.1—1997bZxz.net
Textiles
Fabric Pilling Test
Circular Locus Method
Textiles-.-Assessing the rate of pilling offabrics---Circular locus method1997-09-15Promulgated
National Technical Bureau
1998-07-01Implementation
G87480277997
In the process of drafting GH480E.1-84 Fabric Pilling Test Method, the working procedures and operating methods of the fabric pilling tester currently used in my country were considered. This standard inherits the important technical contents of the previous edition, and adds new supplementary specifications such as the name of the standard, the indentation of the chapter, the expression of the contraction, etc., and the text is refined and the content is clear. At the same time, according to the requirements of clothing without clothing, it has been tested for most of the military clothing textile products. From the date of entry into force, this standard will replace CB4802.1-34. The appendix of this standard is the appendix of the national standard. This standard is proposed by the China National Textile and Apparel Council. This standard is officially issued by the Standardization Research Institute of the China National Textile and Apparel Council. This standard was drafted by Shanghai Institute of Textile Science and Shanghai Institute of Wool and Linen Textile Technology. The main drafters of this standard are Chen Jie and Xi Likao. 1 Scope
National Standard of the People's Republic of China
Textile Products
Fabric Pilling Test Method
Fertillies-Assessing lhe rale of pillingy affabries-Cireular lecus melhod This standard specifies the method for determining the pilling performance of fabrics under slight pressure. This standard is applicable to all kinds of nanowoven fabrics
2 Cited Standards
GB/T4802.1—1997
GB4892.1-8
The provisions contained in the underlined standards constitute the multiple texts of this standard through reference in this standard. At the time of publication of this standard, the titles shown are valid: All standards will be revised. The possibility of using the latest version of the following standards should be discussed. GB6529-86 Standard for the display and testing of textiles GB8170-87 Standard for the revision of the contract
3 Definitions
This standard adopts the following definitions.
3.1 Pilling
When the yarn or fabric is subjected to friction, the fiber ends extend out of the surface, forming fluff or small ball-like protrusions. 3.2 Pilling resistance The ability of textile fabrics to resist pilling.
4 Principle
According to the specified methods and test parameters, use nylon high-frequency material or single-frequency material to make the fabric rub and pill: After heating, under the specified light intensity, compare the pattern of the pilling with the standard sample and evaluate the pilling level. 5 Loading volume
5.1 Figure 5.1 trajectory refining instrument, the trajectory of relative motion between the sample clamp and the platform particle is a circle, the relative motion speed is (60±1)r/min, the inner diameter of the test ring is (90±0.5)mm, the tip can adjust the pressure of the sample according to the pressure listed in Table 1, the pressure is ±1. The device is equipped with an automatic stop switch.
5.2 Abrasive:
5.2.1 Nylon brush: Nylon wire diameter is 0.3mm, and the properties of nylon wire must be uniform. The wire pushing hole diameter is 4.5mm, and there are 150 nylon wires in each hole. The hole distance is mm. The brush surface is required to be flat. The brush is equipped with an adjustment plate: the effective height of the nylon wire can be adjusted to control the fuzzing effect of the nylon (see Appendix A).
5.2.2 Abrasive: 2201 pure wool gabardine, 13.5tex×2.00mm, density Z625.S700, density: 415 sheets/10cm×244 pieces/0cm, square meter weight. 305g/m.2/2, approved by the State Administration of Technical Supervision on September 15, 1998-07-01
GB/T 4802.1
5.3 Foam plastic seat, weight about 2708/m, thickness about 8m, sample gasket grid about 105mm5.4 Sample cutting: Sample can be cut into a test frame with a diameter of (13 ± 0.5) 1mm. Samples can also be cut with a board, pen, or scissors. 5.5 Standard sample: Needle red objects and hair red objects have different standard sample eyes, and the sample is divided into five levels. 5 Standard
Slightly hairy No pilling
Hairy Slightly pilling
Moderately pilling
Slightly severe pilling
Severely excessive pilling
5.6 Evaluation box, provide lighting to compare the sample and sample level: 2 3.0W fluorescent lamps are installed on the top, and a blackboard is attached inside. The angle of the test board can be adjusted. The vertical distance between the fluorescent lamp and the sample board is 3)m. 6 Standard atmosphere
6.1 Standard atmosphere for test: Generally, the test shall be based on the standard of G6529, i.e., relative humidity (20+2)°C, relative humidity (65±5)%. For external tests, the standard of B6529 shall be based on the standard of relative humidity (202)°C, relative humidity (6±3)%. 6.2 The specimens must be cut and tested in the standard atmosphere for test. 7.1 The specimens shall be heated to 24°C in the standard atmosphere for test. 7.2 Five specimens shall be randomly cut from a position more than 10 cm away from the edge of the fabric. There shall be no spots on the specimens that may affect the test results. 1.1 Before the test, keep the instrument level and the nylon system clean. If the instrument is used every day, clean it at least once a day. Use a suitable solvent (such as acrylic acid) to clean the scraper, brush out the lint with a hand brush and use a torch to remove the nylon fibers. 1.2 Place the foam pad, sample and abrasive on the test head and grinding table. The pointer must face outwards. Adjust the test chuck such as the chuck weight and the friction number. Select the test number and material according to the similar fabrics in the table. Carry out the test. |Product type
Chemical liver silk knitted fabric
Chemical biomedical special
Military clothing (item quality method)
Camera three-in-one structure
Material vegetable benefit fabric
Number of times
Number of balls
8-3 took the test details, in the slow pen, according to the ball size, density, deformation contrast phase change standard sample on the sample. According to the adjacent 0.5 level, the electrical grade of each sample was evaluated. When the sample was balled on the front, the degree of its influence on the external performance was comprehensively evaluated, and the description of the knot was given in addition.
Discuss five The technical average of the test grade of the sample is calculated and rounded off to the nearest .5 grade according to GB8130. 2
Test report
GB/T4802.1—1997
Indicates that the test is carried out in accordance with this standard. The following contents shall be reported: a) Name, specification and batch number of the sample; b) Test date; d) Test environment conditions; d) Instrument model: 3) Main technical parameters: 1) Pilling, etc.: 2) Any details deviating from the standard and any abnormal phenomena during the test shall be noted. 47. The calibration of the instrument, the adjustment of the test fabric, the adjustment of the nylon brush and the replacement of the gasket and the abrasive fabric can only be used to calibrate the pilling property of the instrument. The pilling degree of nylon is verified by the designated units of various industries, and the standard samples are made of the test fabrics. The unit adjusts the nylon used according to the standard samples and test fabrics provided by the designated units, so that the pilling effect of the nylon meets the test requirements. After the A2# fabric collector is activated, select one of the three fields (12 or 4 levels) regardless of the pilling level, and regularly or when necessary, test the pilling degree of the sample to judge the change of the pilling property of nylon and abrasive fabrics. This fabric is the reference fabric. Reference fabrics can be made at any time.
A3 Adjustment of nylon brushes
3.1 If the pilling of the sample is uneven, the adjustment plate of the corresponding part can be adjusted to correct it. Where the pilling is insufficient, the adjustment plate of the part can be raised; where the pilling is excessive, the position of the adjustment plate of the part with high pilling rate can be lowered. When adjusting the periphery, all adjustment points should be loosened, and then the part to be adjusted should be raised and lowered, and finally the other adjustment points should be fixed. Note that the adjacent adjustment points should also be raised and lowered to ensure that the adjustment plate does not deform. Each adjustment is limited to 1mm. If it cannot be corrected, it should be raised and lowered by 1mm. A3.2 Correction of new nylon brushes. Pre-grind a certain number of times and use a brush to correct the pilling. 3.3 For uniform pilling performance, if the pilling exceeds 0.5, each adjustment point should be raised and lowered by the same amplitude, and 1mm should be used as the spacing for each rise and fall.
A3.4 If the adjustment plate is raised to the surface level and still cannot meet the requirements, the abrasive fabric shall be sent to the original screening unit for treatment or replaced with a new one. A4 Replacement of abrasive fabrics
For abrasive fabric 2201 gabardine, in order to avoid the pilling degree of the sample being affected by the damage, it should be tested regularly. The new gabardine should be pre-tested. If the pilling degree of the sample of the same group of materials tested by the old gabardine and the spare new gabardine differs by more than half a level, the abrasive gabardine used should be replaced.
A5 Use and replacement of foam plastic gaskets
A5.1 In order to extend the service life of the foam plastic gasket, the gasket must be removed after the test is completed. A5.2 If the foam plastic gasket is found to be aging, broken or deformed and affects the test results, it should be replaced immediately.
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