FYI Tester Instrument

  The warping machine is a machine that neatly winds the cheese yarn into warp beams at a constant speed and under the same tension according to the number and length of warp yarns required by the process for use by the warp knitting machine. The warping process can be divided into beam warping, sectional warping and ball warping according to different yarn types and process requirements. Beam warping machine Definition Also known as batch warping machine, a certain number of warp yarns are wound in parallel on the warping beam, and then several warping beams are combined, sized, dried and wound into a weaving beam. This method is to divide the total number of warps required for the fabric into several batches that are as equal as possible, and wind them onto several warp beams according to the length specified by the process. Features The characteristics of beam warping machine are fast warping speed, high production efficiency, and suitable for mass production; the disadvantage is th

  In optics, irradiance is the power per unit area of electromagnetic radiation incident on a curved surface. Radiant emittance (radiant exitance) is the power radiated from a surface per unit area. Using the International System of Units, the units of these physical quantities are watts per square meter (W/m2). Irradiance is a crucial parameter in the Xenon Arc Tester. Many people will be curious about its calculation. Here is an introduction to how to calculate it. What is the total annual solar radiation? The total annual solar radiation: the accumulation value of solar radiation which reach the ground at per unit area in one year. The total annual solar radiation of each country is different. Due to more clouds and rain near the equator, so the high value area of total annual solar radiation is not at equator, but at nearby latitude 20º. The global maximum value area is in southern Egypt, about 9200MJ. How to convert? Parameters The radiation power in YG611T is 49000μW/m2, 49000μW/

  Breathability is another term for water vapor permeability. According to Wikipedia, a fabric’s breathability is its capacity to let the passage of moisture vapor through it. It is especially crucial for active wear. You need more breathable clothing when your body creates more heat, like during sports exercise, for example. Wearing breathable clothing allows the body to expel moisture and vapor. Breathable clothing facilitates rapid drying but does not “stop” you from perspiring or creating moisture, which is a normal reaction. The capacity of a fabric to permit air to move through it is known as air permeability.  Generally speaking, air permeable textiles have a rather high moisture vapor transfer rate. However, breathability is not a need for air permeable materials. Mechanism of water vapor permeability Tests are used to determine how many grams of water vapor can go through a cloth in a certain amount of time. The test findings are then shown as g/m²/24 hours, an MVT (moisture v

  Since shuttle looms have obvious problems such as low weft insertion rate and poor product quality, shuttleless looms are replacing shuttle looms, and shuttle looms will eventually be eliminated. According to different weft insertion methods, shuttleless looms include rapier looms, jet looms, air-jet looms, water-jet looms and projectile looms. Among shuttleless looms, the weft insertion principle of the rapier loom was first figured out. At first, it was a single rapier, and later a rapier loom with a double rapier for weft insertion was invented. Since the 1950s, following the rigid rapier, flexible, steel belt, two-phase, telescopic, double-layer, three-layer and other forms of rapier looms have appeared and been put into industrial production. With good variety adaptability, it is widely used in yarn-dyed, terry, silk, linen, wool and other industries. It has now developed into a shuttleless loom with many models and large quantities. In recent years, rapier looms have been popul