In the current process for recycling these high-density polyethylene ... Researchers have tried to mimic that result with HDPE, or plastic No. 2, but have faced difficulties as this material ...

“Only PET (#1) bottle and HDPE (#2) bottles are recyclable in the United States so don’t put other types of plastics in the recycling bin,” says Jan Dell, a chemical engineer and founder of ...

Washington — Plastic recycling rates ... density polyethylene (HDPE), seen in milk jugs, shampoo bottles and cleaning product containers. These are numbered "1" and "2" according to a ...