alt.hn

2/24/2026 at 4:39:19 AM

Impacts of Grease and Cheese on the Recyclability of Pizza Boxes

https://www.westrock.com/greasecheesestudy

by aclimatt

2/25/2026 at 3:22:24 PM

No significant technical reason to prohibit recycling of used pizza boxes:

> The general conclusion of this work is that the strength loss of the resulting product made with recovered fiber that incorporates post-consumer pizza boxes should be minimal at typical levels of grease expected to be received in a recycling facility (<2%) and when included in the recovered fiber at expected levels of <3% of furnish. The addition of small amounts of cheese will not impact the fiber bonding in a negative way. It is expected that the larger chunks of cheese will be screened out of the process. Therefore, there is no significant technical reason to prohibit post-consumer pizza boxes from the recycle stream.

by treetalker