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Views: 12 Author: Site Editor Publish Time: 2024-08-28 Origin: Site
textile Lab Instruments Introduction
1 Dyeing and finishing procedure
When mixing color for dyestuff, HS-12 plays an important role. HS-12 has 12 beakers, place the dyestuff and specimen at the beaker, set a certain temperature and pre-determined time for dyeing, then run the machine; after dyeing, take out the specimen and dry it by the oven (LD3642); after it is dried, assess the color in the cabinet (BZGY908A) to check if the color meets the requirement. After several test, the recipes of dyestuff will be confirmed.
When the dyestuff is ready for dyeing, usually dye a certain batch of fabric before large production, QR630-5 is suitable for this job. QR630-5 can dye 4~6kg fabric, after dyeing, can use MU505C to get off the dyestuff, then dry the fabric. When the fabric is dried, can use below instruments check the color fastness, physical properties, etc.
2 Color Fastness Test
2.1 Color fastness to water, perspiration, saliva and seawater, etc.: YG631M +Y902
YG631M: It is used to determine the color fastness to water, perspiration, saliva and seawater of textiles. Specimens of the textile in contact with adjacent fabrics are treated in two different solutions containing histidine, drained and placed between two plates under a specified pressure in a test device.
Y902: It is used together with YG631. It is used to dry the specimens and adjacent fabrics separately after using YG631 to do perspiration test. The change in color of each specimen and the staining of the adjacent fabrics are assessed by comparison with the grey scales.
2.2 Color fastness to rubbing: Y571D
Y571D: It is used to determine the color fastness to rubbing under either dry or wet condition. The change in color of specimen and the staining of the rubbing cotton cloth are assessed with the grey scales.
2.3 Color fastness to scorch/sublimation: YG605
YG605: It is used to determine color fastness to hot pressing or dry heat and to conduct sublimation test. A specimen of the textile in contact with either one or two specified adjacent fabrics is heated by close contact with a medium which is heated to the required temperature. The Change in color of the specimen, and the staining of the adjacent fabric, are assessed with the grey scales.
2.4 Color fastness to Washing: SW-8A
SW-8A: It is used to determine color fastness of textile to washing. A specimen of the textile in contact with one or two specified adjacent fabric is mechanically agitated under specified conditions of time and temperature in a soap solution, then rinsed and dried. The change in color of the specimen and the staining of the adjacent fabric are assessed with the grey scales.
3 Pilling & Snagging Test
3.1 Martindale abrasion & pilling: YG401D
YG401D: It is used to determine the textile pilling & fuzzing property in Lissa-jous movement. A circular test specimen is passed over a friction surface comprising the same fabric or, when relevant, a wool abradant fabric, at a defined force in the form of a Lissajous figure, with the test specimen able to rotate easily around an axis through its centre, perpendicular to the plane of the test specimen. Fuzzing and pilling are assessed visually after defined stages of rub testing.
3.2 Box pilling: YG511-II
YG511-II: It is used to determine the pilling and fuzzing property of textile in tumbling method. Specimens are mounted on polyurethane tubes and tumbled randomly in a cork-lined box at a constant rotational speed. Fuzzing and pilling is assessed visually after a defined period of tumbling. Any special treatment of the laboratory sample, ¡.e. washing, cleaning, has to be agreed upon and shall be stated in the test report.
3.3 Tumble pilling: FY227-II
FY227-II: It is used to determine the pilling and fuzzing property of textile with stainless steel impellers rotating and tumbling test fabrics against cork lines for a pre-determined time.
3.4 Snagging: YG518-IV
YG518-IV: It is used to determine the tendency of fabrics to snag.
4 Air Permeability Test: YG461E
YG461E: It is used to determine the air permeability of woven, knitted and non-woven and most of the textile materials.
5 Fabric Hydrostatic Test: YG812D
YG461E: It is used to determine the resistance of fabrics to water penetration under pressure.
6 Strength Test
6.1 Elmendorf Tearing Strength Test: YG033B
YG033B: It is used to determine the tearing strength of textile in the Elmendorf method. The force required to continue a slit previously cut in a fabric is determined by measuring the work done in tearing the fabric through a fixed distance. The apparatus consists of a pendulum carrying a clamp which is in alignment with a fixed clamp when the pendulum is in the raised, starting position with maximum potential energy. The specimen is fastened in the clamps and the tear is started by cutting a slit in the specimen between the clamps. The pendulum is then released and the specimen is torn completely as the moving jaw moves away from the fixed one. The tear force is measured.
6.2 Bursting strength: YG032D
YG032D: It is used to determine the bursting strength of textile by application of a hydraulic load under a rubber diaphragm of specific area. A test specimen is clamped over an expansive diaphragm by means of a circular clamping ring. Increasing fluid pressure is applied to the underside of the diaphragm, causing distension of the diaphragm and the fabric. The volume of fluid is increased at a constant rate per unit time until the test specimen bursts. The bursting strength and bursting distension are determined.
6.3 Elongation, Tearing, peeling, bursting, seam slippage, etc. test: YG026T (The standard is different, the clamp is different accordingly.)
7 Shrinkage Test
7.1 Mark the fabric: Y085
7.2 Wash the fabric: Y089E
7.3 After washing, dry the fabric: FY743
7.4 Mark the fabric again to check how much does the fabric shrink: Y085
8 Test the thickness of the fabric: YG141D
YG141D: It is used to determine the thickness of various woven and knitted fabrics under a certain pressure.
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