Extrusion Coatings: The Impact of Highly Filled Resins on Mixed Paper Recycling, 18IFPED

Globally, millions of tons of paper are extrusion coated every year creating “mixed paper grades”.  Most mixed papers contaminate the recycling stream and are not collected because they have little recycling value.  Also, costs increase at the packaging facility because of recycler requirements to separate mixed material trimmings from uncoated papers. However, when using highly filled resins, mixed material packaging can become recyclable and no longer contaminate the collection stream. Therefore, filled coatings can reduce costs, increase scrap value, and strategically divert large amounts of paper from the landfill.

This presentation explores how mineralized coatings, during recycling, break into particles having altered compositions, weights, and sizes. Unlike traditional plastic coatings, the particles wash out during pulping and the remaining particles do not contaminate the paper making process. Also, particle processing will be examined at the coarse screens, pressure screens, cleaners, and the finished paper sheet.  

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Extrusion Coatings: The Impact of Highly Filled Resins on Mi
Extrusion Coatings: The Impact of Highly Filled Resins on Mixed Paper Recycling, 18IFPED
Author: Christopher R. Tilton

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