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The origin of kraft paper!

Article provenance:未知 Popularity:Time:2020-04-20 17:21
kraft paper tape manufacturers, many people want to know how kraft paper is created?
 
How to come out at once and now popular in life, then today we are free to talk about this topic.
 
Kraft paper is used as packing material. The intensity is very high. Usually yellow brown. Semi or full bleached kraft pulp is light brown, cream or white. Quantitative 80-120G / m2. The fracture length is usually more than 6000 M. The breaking work, tear strength and dynamic strength are very high. Most of them are web paper, but also flat kraft paper. The Kraft coniferous wood pulp was used as the raw material, which was beaten and made on the long web papermaking machine. It can be used as cement bag paper, envelope paper, adhesive seal paper, asphalt paper, cable protection paper, insulation paper, etc.
 
A long time ago, "kraft paper" was really made of calf skin. Of course, this kind of "kraft paper" can only be used when making the drum skin. The kraft paper you use for book wrapping is made of wood fiber from conifer after people have learned the papermaking technology, through chemical method, put it into the beating machine to stop beating, and then participate in the rubber material, dye, etc., and finally make paper in the papermaking machine.
 
Because the color of this paper is yellow brown, the paper is tough and looks like cow leather, so people call it cow leather paper. The kraft paper made in this way is usually used for packaging and printing. Can also make some other cartons, cartons and so on. Of course, there are many more. We won't introduce them one by one here.
 
In fact, kraft paper and ordinary paper manufacturing methods are not much different. Why is kraft paper stronger than ordinary paper? This is mainly because the wood fiber used in kraft paper is relatively long, and when cooking wood, it is treated with caustic soda and alkali sulfide chemicals, so that the chemical effect they play is relatively mild, and the damage to the original strength of wood fiber is relatively small, so the paper made of this paper pulp, fiber and fiber are closely related, so kraft paper is very Prison.
 
Kraft paper is a tough and water-resistant packaging paper, which is brown yellow and widely used. It is often used to make paper bags, envelopes, record covers, files, sandpaper, etc. The quantitative range is from 40g / m2 to 120g / m2. There are differences in Web war board, single side light, double side light and stripe. The main quality requirements are flexibility and firmness, high breaking resistance, and the ability to accept large tension and pressure without cracking.
 
Kraft paper has a high tensile force, single light, double light, stripe, non grain and so on. It is mainly used for wrapping paper, envelope, paper bag and printing machine drum lining.

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