The tarpaulin factory teaches you how to measure the density of the tarpaulin

The calculation unit of tarpaulin fabric density is in metric system, which refers to the number of warp and weft yarns arranged within 10cm. The size of the density directly affects the physical and mechanical indicators such as the appearance, feel, thickness, strength, folding resistance, air permeability, abrasion resistance and thermal insulation performance of the fabric, and it is also related to the cost and production efficiency of the product. So how to measure the density of the tarpaulin? Let's take a look with the editor of the tarpaulin factory! (1) The indirect test method of tarpaulin is suitable for fabrics with high density and small yarn characteristics. . First, after analyzing the fabric structure and the number of weave cyclic warp yarns (the number of weave cyclic weft yarns), and then multiplying the number of weave cycles in 10cm, the product obtained is the warp (weft) yarn density. (2) The direct measurement method of tarpaulin The direct measurement method is completed by means of a cloth mirror or a fabric density analysis mirror. The length of the scale of the fabric density analysis mirror is 5cm. Under the analysis lens, a long glass piece is engraved with a red line. When analyzing the fabric density, move the lens and align the red line on the glass piece and the red line on the scale at the same time. Between the yarns, take this as the starting point, and count the yarns while moving the lens until the 5cm scale line is this. The number of output yarns is multiplied by 2, which is the density value of 10cm fabric. When counting the number of yarns, take the center between the two yarns as the starting point. If the count reaches the end, it exceeds 0.5, and when it is less than one, it should be counted as 0.75. If it is less than 0.5, then 0.25 root count. Generally, 3-4 data should be measured for fabric density, and then the arithmetic mean value should be taken as the measurement result.

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