Processing Newsprint (ONP) for Recycling
Old newsprint (ONP) is often baled or loaded loose in a tractor-trailer. Each buyer of newsprint may have individual requirements for bale weights and dimensions or quantity accepted in a tractor-trailer.
Quality control is very important in processing newsprint for recycling. Generally the buyer of newsprint will be interested in the baled weight, moisture content and contaminants.
Moisture content is generally limited to 10% or less. Special equipment is available to check moisture content but the buyer will generally determine the need for such testing. Since paper is most often bought by the ton, a high moisture content would mean that the buyer is paying too much for a load of wet paper. Also, if paper remains wet for extended periods, the fiber can degrade.
Contamination is also a serious issue with paper processing. Contaminants to paper are known as outthrows and prohibitive materials. Outthrows are usually paper of a different type, a small percentage of which may be acceptable. Newspaper inserts are common outthrows that is acceptable while telephone books, junk mail and coated paper are unacceptable outthrows. Outthrows are limited to 2% contamination. Prohibitive materials are usually non-paper items such as metals, plastics, glass and dirt. Prohibitives are limited to .5% contamination.
Newsprint that is baled can be stored inside or outside depending on buyer requirements. Sunlight and rain can overtime degrade baled newsprint stored outside.
If you have any questions, comments or need assistance regarding the processing of newsprint for recycling, contact the Recycling and Solid Waste Reduction Program staff at MDEQ. |