to 40 extension. Preliminary estimates, the end of this century, the world, back the amount of waste will reach 50 shape. The use of waste paper pulp, and a pulp quality control problems. Obviously, it is impossible to unlimited paper being repeated cycles reuse, and its limit is dependent on the speed of fiber quality and extent of deterioration. Old newspapers in pulp processing compound, which contains a high yield of mechanical pulp, including chemical thermo mechanical pulp and pressure groundwood pulp, retain a higher lignin, stiffer fibers. After crushing machinery processing, fiber becomes more supple and micro fibrosis conducive bonding fiber structure can ferreted closer, smoother newsprint. US factory has shaped with 25 and 75 old newspapers deinking Tinto CTMP pulp with Newsprint, a4 paper quality than using 100 Tinto CTMP pulp newsprint made good copy. But old newspapers chemical pulp fibers in a paper due process had been bound, dense fibrous structure itself, reducing the cavity many difficult surface hydration, fiber becomes "stiff", viscosity reduction, a paper strength decline . Laboratory and practice facility proved waste cycles increases, the physical strength of paper pulp declines linearly, each cycle, burst and tensile strength fiber pulp strength decreases to 60 to 70 Peng . Thus, the paper stock with individual fibers is recycled to a certain limit. In China, the use of waste paper, especially after inking regeneration papermaking a4 increases the number of myopia, notepad printing began to move toward the eye direction, print a4 paper choose from a scientific point of view, to reduce the excessive use of eye damage. Notebook notepad office a4 paper and make use of the market is the same, usually white, and this is our subconscious notepad a4 paper that some of the colors, "black and white" is a long presence in the minds of the people the truth, but because now working pressure, the office staff time increases, the need for a long time in front of the office notepad, a lot of people in the work appeared dry eyes, fatigue, vision loss and, therefore, under the current research in the printing industry, began using yellow notepad office a4 paper were produced. 0 && image.height> 0) {if (image.width> = 700) {this.width = 700; this.height = image.height * 700 / image.width;}} "style =" HEIGHT: 366px; WIDTH : 400px "alt = production office notepad, notepad making src =" edaoyin.cn/uploadfile/2014/0313/20140313105836865.png "> use a light yellow a4 paper production is based on the reflection of light, white reflective white a4 paper full-range of light reflected to the eyes will seem harsh, it is people walking in the snow for a long time need to bring sunglasses principle is the same, althoug


A4 Paper Manufacturers , A4 paper suppliers, A4 copy paper manufacturers 
www.a4papermanufacturers.com