A: Your Renewliner still has life left in it. Consider storing it and using it to insulate or protect items you ship in the future. Once you're done with Renewliner, place it in your curbside or local plastics recycling bin. It is made from 100 percent polyethylene terephthalate (PET), which is marked by the number 1 inside the "chasing arrows" recycling symbol: ♳.
A: No. Renewliner is 100% PET – the film lining is made from the same material as the inner fiber.
A: No, Renewliner is not compostable. It is plastic. But it is made from 85 (or more) percent recycled PET plastic, which means it uses very little, if any, virgin material.
A: Renewliner is 100 percent recyclable polyethylene terephthalate (PET) and is made from at least 85 percent post-consumer waste. PET is infinitely recyclable and one of the most widely recycled plastics in curbside recycling programs.
PET is also very lightweight. In fact, it would take 7.3 metric tonnes of other packaging materials, including paper, to replace 1 metric tonne of plastic, according to Plastics and Sustainability, a 2016 report by research firm Trucost.
Ascertaining the sustainability of compostable insulation, on the other hand, is less straight-forward. The availability of composting is less than EPS (Styrofoam) recycling.
Plant-based insulation is made from a variety of source materials, such as cotton grown for the purpose, and may be combined with non-compostable binders.
There are no U.S. standards for backyard compostability. As with other plant-based material, the ability to convert plant-based insulation material into compost depends on how well the compost pile is maintained and whether the insulation contains non-compostable binders.
If you live in one of the 200 U.S. cities* that offer curbside municipal composting services, you can place your plant-based insulation material into your composting bin, under certain conditions:
*According to BioCycle Magazine