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The calculation unit of the density of tarpaulin fabric is in metric system, which refers to the number of warp and weft yarns arranged within 10cm. The density directly affects the appearance, feel, thickness, strength, flexural resistance, air permeability, abrasion resistance and thermal performance of the fabric and other physical and mechanical indicators. At the same time, it is also related to the cost and production efficiency of the product. So how to measure the density of tarpaulin? Let's take a look with Linyi Shengde Plastics!
Tarpaulin indirect test method
This method is suitable for fabrics with high density and regular weaves with small yarn characteristics. First, after analyzing the fabric structure and the number of circulating warps in the structure
(The number of weft yarns in the organization cycle), and then multiply by the number of weave cycles in 10cm, and the product is the warp (weft) yarn density.
Tarpaulin direct measurement method
The direct measurement method is accomplished 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. Below the analysis lens, a long strip of glass is engraved with a red line. When analyzing the fabric density, move the lens to align the red line on the glass and the red line on the scale at the same time. Between the yarns, use 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 multiplied by 2 is the density value of 10cm fabric.
When counting the number of yarns, take the center between the two yarns as the starting point. When the count reaches the end, it should be more than 0.5, and if it is less than one, it should be counted as 0.75.
If it is less than 0.5, it will be counted as 0.25. The fabric density should generally be measured with 3-4 data, and then take the arithmetic mean value as the measurement result.