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Kraft paper common sense
Time:2016-10-28  From: auhor

  Kraft paper with a high tension, a single light, double light, stripes, no lines and so on. Mainly used for wrapping paper, envelopes, paper bags and printing presses, such as drum lining. Used as packaging materials. High strength. Usually tan. Half-bleached or full-bleached kraft pulp is light brown, cream or white. Quantitative 80 ~ 120g / m2. Crack length is generally more than 6000m. Tear strength, rupture work and dynamic strength are high. Mostly for the web, there are flat paper. Sulfate coniferous wood pulp as raw material, by beating, in the long paper machine made of paper copy. Can be used for cement bags of paper, envelopes, paper, plastic sealed paper, asphalt paper, cable protection paper, paper insulation. In a long time ago, "kraft paper" is really done with the calf skin. Of course, this "kraft paper", and now only when you do drums, it will use it; and your package with kraft paper, is learned after the papermaking technology, with coniferous wood fiber, chemical pulping , And then into the beater for beating, then add rubber, dyes, etc., and finally in the paper machine into paper. Because the color of this paper is yellowish brown, paper tough, much like leather, so people call it kraft paper. In fact, kraft paper and ordinary paper manufacturing methods and not much different. Why kraft paper than regular paper it? This is mainly used in kraft paper wood fiber is relatively long, and when cooking wood, is the use of caustic soda and sulfuric acid chemicals to deal with, so they played a more moderate chemical effect, wood fiber The strength of the original damage is relatively small, so use this pulp to do out of paper, fiber and fiber is closely dependent, so kraft paper is very fast.

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