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Why is the hardness of kraft paper tape different?

Article provenance:未知 Popularity:Time:2020-04-11 19:30
Water Activated kraft paper tape manufacturers to introduce,Kraft paper tape, as a tough and water-resistant packaging material, is brown yellow and widely used.
It is often used in the manufacture of paper bags, envelopes, workbooks, etc.
Nowadays, with the modern society paying more and more attention to environmental protection, kraft paper has been loved by many consumers because of its recyclable, durable and other characteristics.
However, when using kraft paper, there are also various problems, such as hardness problems. So, what causes it?
 
Generally speaking, the hardness of kraft paper may be different from that of kraft paper of the same weight.
The main reason for this is pulp. As the original material of kraft paper is plant fiber, the wood fiber content of the main part of the tree is the highest, so the kraft paper produced has the highest hardness, which is commonly known as pure wood pulp kraft paper.
 
However, there are also recycled kraft paper. Bark, rags and other materials will be added to the recycled kraft paper, and the hardness will be defective.
It is concluded that the hardness of kraft paper depends on the content of wood fiber.
The higher the content, the better the paper hardness. The fiber content of different kinds of trees is different, and the fiber content of trees in different regions is also different, so the hardness of kraft paper consumed after making pulp will be different. Therefore, to achieve the same hardness, the same batch of kraft paper is the best.

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