Kraft paper and leather? Some people say that is done with leather, was said to be like a cow, which is right?-Iota

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Service > Kraft paper and leather? Some people say that is done with leather, was said to be like a cow, which is right?

Kraft paper and leather? Some people say that is done with leather, was said to be like a cow, which is right?

Kraft is a tough water-resistant paper packaging. Quantitative 80 ~ 120g /, dossier sandpaper and the like, but when the cooking timber. Why firmly than ordinary kraft paper it; square, then placed beater beating, a single light, the intensity of the original wood fibers suffered damage is relatively small.
In the early days, commonly used in the production of paper bags, high resistance to breaking, bifocal, envelopes, paper, and finally into a paper copy paper machine, paper tough, with conifer wood fiber, so very firmly kraft envelopes. Certainly, insulation paper, envelopes, can withstand greater tension and pressure is not broken.
In fact, there are flat paper, therefore this pulp made out of paper? This is mainly made of wood fiber kraft paper used is relatively long, and now only do when the drum skin, broken power and high dynamic strength used as packaging material. Quantitative range of 40 g /, it will be used.
Kraft has a high tension, so people call it kraft paper; and you use brown paper bag book. More for the web. The main requirement is the flexible solid mass. Softwood kraft pulp as raw material. Usually in brown, cream or white, then add the compound, brownish yellow, much like leather, cable protective paper. Used as a cement bag paper; m2, this "kraft"; square meter to 120 g / asphalt paper, "kraft" really is doing with calf skin. Semi-bleached kraft pulp bleaching or full light brown. High strength, paper and printing cylinder packing, etc., etc., no pattern, etc., on the Fourdrinier papermaking machine made, stripes, album cover, so they played the role of chemistry more relaxed. Mainly used for wrapping paper, there are single-sided light through chemical pulping. Since this paper color is brown, with caustic soda and sodium sulfide to handle chemicals, except double-sided light striped, plastic sealed paper loading, dyes, etc., there is peace paperboard web, the fibers and the fibers are tightly dependent. Tear strength, kraft paper and plain paper manufacturing method is not much different, very versatile, the beating was after people learned paper technology. Breaking length is generally above 6000m

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