How to do yarn Linear density test

1 Overview The yarn Linear density is one of the commonly used indicators to describe the yarn fineness. The legal unit is tex, that is, the common weight (g) of yarn (or monofilament) per kilometer (km). The Linear density of yarn determines the variety, use, style and physical and mechanical properties of fabric. For yarn Linear density test, the length and mass of the sample shall be determined. The length shall be measured with a frame length meter, and the mass shall be measured with an equal arm balance or an electronic balance.

2 Purpose and Requirements

Through testing, master the testing method of yarn Linear density, cultivate the ability to skillfully use the instrument, understand the factors that affect the test results of yarn Linear density, and learn the calculation method of various indicators.

3. Standards adopted

3.1 Applicable standards: GB/T 4743, ISO 2060.2 Textiles -- Determination of Linear density of Yarn in Package -- Yarn Twisting Method

3.2 Relevant standards: GB 6529 Standard Atmosphere for Humidification and Testing of Textiles, GB/T 9995 Determination of Moisture Content and Moisture regain of Textile Materials Oven Drying Method, GB/T 9994 Official Moisture regain of Textile Materials, GB/T 6503 Test Method for Moisture regain of Synthetic fiber Filament, GB/T 6502 Sampling Method for Synthetic fiber Filament, FZ/T 10035 Universal System for Marking Linear density of Textile Materials (Tex System), FZ/T 01015 ISO 6741-1 "Determination of commercial quality of textile fibers and yarns for delivery - Determination and calculation of mass", etc. 4 Instruments and tools

4-1 Thread length measuring instrument (Figure 1 shows YG086 thread length measuring instrument).

4. 2 Ventilation type fast oven (Figure 2 shows Y802K ventilation type fast oven), chain balance or electronic balance (sensitivity of 1mg or 10mg).