"The main physical performance indicators such as tear index, elongation and tensile energy absorption index of prestressed warp and weft kraft paper are more than 4 times the national standard. Prestressed paper reduces costs by more than 25% compared to 4-layer ordinary paper bags." Zhengzhou Zhang Xi, the director of the New Packaging Materials Research Institute, an expert with outstanding contributions from the country, and the inventor of the prestressed principle papermaking, said so. What is "prestressed paper" The prestressing principle was first successfully applied to the construction field by French engineer Fressina in 1928. Its outstanding features are "improving its own strength, reducing its own weight, saving raw materials, and reducing costs." The prestressing principle is applied to the paper industry, domestic There is no precedent. The institute began to carry out substantive exploration of the prestressing principle papermaking technology in 1988. In 2005, it overcomes a series of major technical problems such as warp and weft prestressing technology, warp and weft non-woven forming technology, and prestressed warp and weft pulp and paper manufacturing Industrial production. Compared with ordinary paper, prestressed paper has more horizontal and vertical yarns. The strength of the paper is determined by the application of prestress and the warp and weft added to the paper. The pulp is only filled with auxiliary materials. Because the warp and weft threads carry prestress, non-wood fibers and waste paper can be used instead of wood pulp, and the waste paper containing thread can be reused for papermaking, which can be directly used to produce traditional paper products such as culture, life and industrial and agricultural technology paper. "The prestressed papermaking technology can achieve no or fewer trees in papermaking, which represents the development direction of the world's papermaking industry." Compared with the traditional papermaking technology currently used at home and abroad, prestressed papermaking uses waste paper to produce paper for every ten thousand yuan Resources are saved by more than 42%, taxes and profits are increased by more than 10 times, industrial added value is increased by nearly 78%, and unit energy consumption is also greatly reduced. At the same time, prestressed papermaking has crossed the era of "forest and paper integration" and achieved green production, use, and reuse. According to Zhang Xijun, "prestressed papermaking is also" white water papermaking ". After recycling, it can be treated It meets the national emission standards and will not cause secondary pollution. "In addition, a pre-stressed paper with a basis weight of 100 grams contains 80 grams of pulp and 20 grams of yarn, while ordinary paper bags of the same strength require 320 grams, thus reaching the National Development and Reform Commission. The three principles of "reduction, reuse, and recycling" mentioned in the Paper Industry Development Policy. Modern Basin Faucet,Modern Single Level Basin Faucets,Stainless Steel Press Faucets,Modern Single Leve Basin Tap HESHAN ULA KITCHEN UTENSILS CO.,LTD , https://www.ulakitchenware.com
Prestressed paper-manufacturing technology for new green printing materials