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Q.1032:  How many grades of paper are there?

Ans. Papers can be graded in so many different numbers of ways and if we count all permutation and combination of grades total grades may well exceed 10,000. Some of the major grades classifications are;

1. Based on basis weight Tissue: Low weight, <40 g/m2 Paper: Medium weight, 40 - 120 g/m2 Paperboard: Medium High weight, 120-200 g/m2 Board: High weight, >200 g/m2

2. Based on Color Brown: Unbleached White: Bleached Colored: Bleached and dyed or pigmented

3. Based on Usage Industrial: Packaging, wrapping, filtering, electrical etc. Cultural: Writing, printing, Newspaper, currency etc. Food: Food wrapping, candy wrapping Coffee filter, tea bag etc.

4. Based on Raw Material Wood: Contain fibers from wood Agricultural residue: Fibers from straw, grass or other annual plants Recycled: Recycle or secondary Fiber

5. Based on Surface Treatment Coated: Coated with clay or other mineral. Uncoated: No coating Laminated: aluminum, poly etc

6. Finish Fine/Course calendered/ supercalendered Machine Finished (MF)/Machine Glazed (MG) Glazed/Glossed

For details visit Grades

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