Full kraft pulp regeneration - 033

1] using 100% wood pulp ingredients good stiffness is a good helper costume proofing division
2] kraft paper with high tension, a single light, double light, stripes, no pattern and so on. Mainly used for wrapping paper, envelopes, paper bags and the printing press roller bag lining and so on. Used as a packaging material. High strength. Usually yellowish brown. Semi-bleached or fully bleached kraft pulp was light brown, cream or white. Quantitative 80 ~ 120g/m2. Breaking length is generally above 6000m. Tear strength, power, and dynamic rupture strength is high. More for the web, there are flat paper. Kraft softwood pulp as raw material, beating the Fourdrinier papermaking machine is made. Used as a cement bag paper, envelope paper, plastic sealed paper loading, asphalt paper, cable protection paper, insulation paper. In the early days, "kraft" really is done with calf leather. Certainly, this "kraft", now only doing the drum skin when it will be used; while you use brown paper bag book, is that people learn papermaking technology, the use of coniferous wood fiber, through a chemical process pulp, and then carried into the beater beating, adding plastic materials, dyes, etc. Finally, the paper machine in a paper copy. Because of this paper, the color is brown, papery tough, much like leather, so people call it kraft paper. In fact, kraft paper and plain paper manufacturing method is not much different. Why kraft paper firmly than ordinary it? This system is mainly used for kraft wood fiber is long, and the cooking timber, with caustic soda and sodium sulfide to process chemicals, so that they are relatively mild chemical action from the wood fiber by the intensity of the original injury relatively small, so use this pulp made out of paper, between fibers is tightly dependent, so kraft is very firmly.
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