Paper and paper products make up over a third of household waste. Paper recycling involves de-inking, bleaching and re-pulping. Newspapers can be de-inked and used to make newsprint, box board, or moulded pulp products such as egg trays.
For purposes of recycling, paper can be categorized as :-
Grades of Waste Paper
Kraft Grades (Brown cardboards)
- Corrugated container ( boxes) K4
Mechanical Grades (Papers)
- Special news- newspapers and magazines 20% mix only ( post consumer) SN
- Over issue news- news papers that have not been used or overruns FN
- Magazines – dry coated magazines, catalogues SBM
- Sorted white ledger- office grade white paper with no contaminants HL1
Mixed Grades ( mixed papers)
- Mixed Paper- mixture of different papers CMW
- Super mixed paper- mixture of various qualities and colours of paper SMW
What contaminates reduces the price of paper
Remove all the following contaminants
- Greaseproof paper
- Adhesive tapes
- Synthetic adhesives ( Glues)
- Metallic foils
- Wax coated papers ( waterproof boxes)
- Carbon papers
- Oil or grease stained papers or cardboards
- Dirty or contaminated papers
- Drink cartons
Terms used in the paper industry
- Broke: Paper that has been discarded anywhere in the manufacturing process. It is usually returned to a re-pulping unit for reprocessing
- Corrugated paper: Heavy paperboard, moulded into parallel ridges and grooves.
- High-grade waste: Waste paper that is the most valued in the market place. High-grade paper includes trimmings and cuttings from converting plants, computer printouts, tabulating cards and desk top paper. High-grade waste paper is often collected in offices.
- Kraft paper: A comparatively coarse paper particularly noted for its strength and made primarily from wood pulp produced by the sulphate pulping process.
- Mixed office papers: Mixed waste paper that is generated in offices and has high recycling value.
- Newsprint: The kind of paper generally used for printing newspaper.
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