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The use of kraft paper bags

Kraft paper with a high pull, a single light, double light, stripes, no grain and so on. Mainly used for wrapping paper, envelopes, paper bags and other printing presses and so on. Used as packaging material. High strength. Usually tan. Half drift or full bleached kraft pulp is light brown, creamy or white. Quantitative 80 ~ 120g / m2. Crack length is generally more than 6000m. Tear strength, rupture strength and high dynamic strength. Mostly for the web, there are flat paper. Using sulphate softwood pulp as raw material, by beating, in the long net paper machine made of copy. Can be used for cement bag paper, envelope paper, paper seal paper, asphalt paper, cable protective paper, insulation paper.

kraft paper bag

In a long time ago, "kraft paper" really is done with the calf's skin. Of course, this "kraft paper", now only when doing drum skin, will use it; and you pack the book with kraft paper, is that people learn the paper technology, with coniferous wood fiber, through chemical pulping , And then into the beater for beating, then add the compound, dyes, etc., and finally in the paper machine into paper. Because the color of this paper is tan, paper is tough, much like leather, so people call it kraft paper.

In fact, kraft paper and plain paper manufacturing methods and not much different. Why is kraft paper firm than plain paper? This is mainly made of kraft paper used in the wood fiber is relatively long, and in the cooking of wood, is the use of caustic soda and sulfide alkali chemicals to deal with, so that they play a more moderate chemical effect, the original strength of wood fiber damage It is relatively small, so the pulp made with this paper, fiber and fiber is closely dependent, so kraft paper are very tight.