Paperboard Zhixin import less impurities

It refers to the weight per unit area of ??the paper, with the g / m2, ie grams of one square meter of heavy paper format. Paper quantitative level, determines the physical properties of the paper, such as tensile strength, tearing, tightness, stiffness and thickness. Therefore, according to the equipment and its performance characteristics corresponding quantitative arrangements printed pieces for production, in order to better reduce consumption and improve the efficiency of product quality and equipment. 2. Thickness Thickness extent it is paper, usually expressed in units of measurement mm. Thickness and quantification and tightness are closely related, in general, the paper thickness, its quantitative corresponding high, but the relationship between the two is not absolute. Although some paper thin, but its quantitative and thicker equal or exceed. This shows the tightness of the fiber structure of the paper determines the quantitative and thickness of the paper. From the use of perspective, the paper of uniform thickness is very important. Otherwise, it will affect the auto-renewal of paper, glue, etc. evenness. 3. tightness it means the weight per cubic centimeter of paper, with a g / cm3 tightness and a thickness of the sheet by quantitative formula Example pressing calculated:. D = G / d * 1000, wherein: G represents a quantitative paper ; g of the thickness of the paper. Tightness is a measure of the degree of density of the paper structure, if tight through the large, easy to rattle paper, opacity, and will significantly reduce water absorption, easy to dry. According to the above formula is also very easy to calculate the thickness of cardboard. The formula is: d = G / D. Example: Find the 500g / m2 double gray cardboard (its tightness tab stops 0.625g / cm3, which is our common indicators) thickness. 500g / m2 ÷ 0.625g m2 step mentioned on / cm3 = 0.0008m = 0.8mm and cm3 unit conversion, bearing in mind, or prone to errors, the method is: cm3 / m2 = (1 * 0.000001) m, converted into mm is our actual thickness. The stiffness of the paper it is against another object indentation performance, but also stiff performance fibrous tissue paper. 5. It refers to the smoothness of the paper surface unevenness degree, units in seconds, measurable. Its detection principle is: in certain vacuum and pressure, a certain air gap with the solvent sample surface between the glass surface by the time used. When the paper smoother, slower speed through the air, whereas air through faster. 6. It refers to the size of the expansion rate of variation in the paper absorbs moisture or water loss arising. The more soft tissue fibers of the paper, the lower tightness, paper stretching rate is higher; on the contrary, the lower the expansion rate. 7. The water content in the water content of cardboard. Generally speaking standards. Double-gray cardboard moisture content 8-12%. 8. It refers to the vertical and horizontal direction of the sheet of fibrous tissue arranged. In the papermaking process, the fibers run along the direction of the paper machine for paper lengthwise. It can be identified from the network marks presented an acute angle. Perpendicular to the longitudinal and transverse, longitudinal deformation values ??using the little paper pattern transverse stretching process of using paper patterns larger variance. 9. The air permeability of the general situation, the thinner the paper, the lower the tightness, the greater its permeability. Air permeability in units of ml / mim (ml / min), or s / 100ml (sec / 100 ml), refers to the time one minute or the amount of air through the plane of the air required by 100ml. 10. The positive and negative paper, pulp attached to the steel mesh to filter dewatering qualitative manner. Thus, as the network side because the fines and filler with water loss, so leaving net marks on thick paper. While the other side does not rely on the network is fine. Smooth, so that the difference between positive and negative paper form, although production after drying, calendering, front and back are still differences. Regular size: n ° 787 * 1092MM, generous 889 * 1194MM basically have a spot (large need to be asked in advance) to be processed pasting is generally 3-5 days delivery time, made special regulations in 7-15 days ( according to a single row of different seasonal conditions are subject to change) international standard size: n ° 787 * 1092MM (31 * 43 '') is the width of the paper 787mm, a length of 1092 mm, cardboard and 1092MM parallel lines, generous 889 * 1194MM (35 * 47 '') cardboard lines parallel with 1194MM Weight: 200G-1600G molding, other gram to be processed mounted together, our existing complex and flat sheets roll laminating machine, 48M Gas drying line to meet the needs of different customer product!