The canvas factory will take you to understand the density and measurement method of canvas!

The calculation unit of canvas 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, wear resistance and thermal insulation performance of the fabric, and it is also related to the cost and production efficiency of the product. If the density is small, we will have a loose feeling when looking at it. It also shows us in the feel. The density of the canvas fabric will also affect the thickness, strength, wear resistance and warmth retention of the canvas. Generally speaking, the higher the density of the canvas fabric, the stronger the canvas, and the strength will be improved accordingly. Wear-resistant, the same in terms of warmth retention, the more solid and meticulous it is, the warmer it will be. However, if the density of the canvas fabric is high, the air permeability of the canvas will be much worse. And it will also increase the cost of production and the unevenness that affects the production efficiency of canvas in production. There are two methods for measuring warp and weft density: (1) Direct measurement method 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, the center between the two yarns should be taken as the starting point. If the count reaches the end, it exceeds 0.5, and if it is less than one, it should be counted as 0.75; if it is less than 0.5, then Calculated by 0.25. Generally, 3-4 data should be measured for fabric density, and then the arithmetic mean value should be taken as the measurement result. (2) Indirect test method This method is suitable for regular weave fabrics with high density and small yarn characteristics. First, after analyzing the fabric structure and the number of weave loops (the number of weft loops), and then multiplying the number of weave loops in 10cm, the product obtained is the warp (weft) yarn density.