Paper industry knowledge that the paper equipment industry must learn-Jinling Paper Machine

　　Jinling Paper Machinery:

　　As a person in the papermaking equipment industry, one must understand various types of paper concepts. The following are the definitions of various types of paper provided by Jinling Paper Machinery. I hope it will be helpful to newcomers in the industry who have just contacted.

　　Waste paper: It is composed of mixed waste paper of different quality, and is not limited by packaging method or fiber composition. Sundries must not exceed 2%. The total amount of unqualified waste paper shall not exceed 10%. US Waste No. 3 　 Premium Waste Paper: It is composed of a mixture of selected waste paper of different quality and is packaged for delivery. The groundwood pulp content of such waste paper (coated or uncoated) must not exceed 10%. Sundries shall not exceed 0.5% of the total amount of unqualified waste paper shall not exceed 3%.

　　Special old newspapers: scrap newspapers that have been selected and protected from dampness, packaged and supplied. Such old newspapers are not exposed to sunlight, and there is no other miscellaneous waste paper mixed in them. The gravure and color printing parts do not exceed the normal number. No debris is allowed. The total amount of unqualified waste paper shall not exceed 2%.

　　Special-grade old newspapers (for deinking): waste newspapers that have been selected and not damp-proof, packaged and supplied. Such old newspapers are not exposed to sunlight, do not contain magazines, blank paper, outdated newspapers and other miscellaneous waste papers from printing houses, and their gravure and color parts do not exceed the normal quantity. Do not use other paper packaging. No debris is allowed. The total amount of unqualified waste paper shall not exceed 0.25%.