When waste HDPE cartridges are disposed through the correct waste channel. Before the recycling process can begin, the plastic must be completely cleaned of all contaminants. And at this stage, it’s what remains inside thats important.
Most cleaning processes use a float-sink tank system. By floating HDPE in water the tanks can normally remove contaminants. Unfortunately HDPE used in conjunction with sealants & adhesives, is often too heavily contaminated. Stubborn left over product, that in most cases has fully dried, can’t be separated from the plastic. And ultimately this is what prevents the waste plastic from entering the main recycling process.
So without a reliable recycling process, we’re left with a problem. Using plastic sealant and adhesive cartridges mostly leaves behind unacceptable, permanent, single use plastic packing waste. Thats millions and millions of waste plastic cartridges, entering land fill every year and polluting for the next 1000 years.