If you use an HP Inc. printer, chances are you’ve seen at least part of the device’s current ink or toner cartridges before. Thanks in large part to an 18-year-old partnership with Montreal-based Lavergne Group, new HP cartridges are made from plastic salvaged from their ancestors.
The process is called closed-loop recycling, and it took a lot of research and expertise to make it work. Plastic, it turns out, is not a single product – there are many kinds, each with different properties, and they can’t be mixed. That’s why, if you look at the bottom of any plastic bottle or other object, you’ll see a triangle with a number in it; that number tells you what type of plastic you’re dealing with.
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