US plastics recyclers are having trouble sourcing sufficient feedstocks because of stagnant collection volumes, according to speakers at the 2025 Plastics Recycling Conference this week in Maryland.
For producers of recycled polyethylene terephthalate (rPET), recycled polypropylene (rPP) and recycled polyethylene (rPE), feedstock supply tightness has increased significantly this year.
Rising demand and stagnant volumes are squeezing an industry that was already low on feedstocks, causing pricing for recycled feedstocks to jump dramatically over the past six months.
Since October, prices for naturalhigh density polyethylene (HDPE) bales have more than doubled, polypropylene bale prices have increased by 84pc, and US west coast PET bales have increased in price by 34pc, according to Argus data.
While prices for each material are affected by different sets of factors, they all face tighter supplies, because the US is not collecting enough recyclables to meet demand for recycled polymers.
While recyclers have increased their input capacities and consumer products companies have purchased more recycled resin, collection volumes for the US remained stagnant in 2021 and 2022, according to the latest data from the Association of Plastics Recyclers and Stina, and recyclers say the situation has not improved.
"We're really bumping up against a ceiling in terms of volume for rPET production," said Lauren Laibach, director of data services at the National Association for PET Container Resources (NAPCOR).
NAPCOR's 2023 PET recycling report found that the US's gross recycle rate rose to 33pc, a 4pc increase from 2022, but the rate increase was largely a result of fewer PET bottles beingavailable for recycling.
Improving collection volumes of recyclables is a problem mostly out of recyclers' hands, as state and local policy-makers are largely responsible for improving rates and investing in recycling infrastructure.
However, extended producer responsibility (EPR) programs, including in Oregon and California, are expected to boost investment in recycling infrastructure.
Recyclers in particularly dire situations, such as flake producers on the US west coast, may require more legislation if they are to survive. PET recycler Evergreen shut down its flake and wash line in California this week due to financial difficulties with producing flake.
Bottle deposit systems, a tax credit for recyclers or a prioritization of US material under EPR schemes could help improve domestic supply of PET bottles, Laibach said.
"We can't expect any sustainable, long-term improvement without policy intervention," Laibach said.