HDPE Recycling
Recycled polyolefins lose melt strength before they lose anything a data sheet would show. What we have written on HDPE and PP recycling, and the numbers behind the market.
Recycled polyethylene and polypropylene lose melt strength before they lose anything a tensile test would catch. That single failure mode is behind bubble instability in film, sagging parisons in blow moulding and thin corners in thermoforming, and it is the reason a material that passes a specification sheet can still be unusable on a line. This hub collects what we have written about recycled polyolefins.
Start here
- GUIDEHDPE Recycling Explained4 minHow the stream is sorted, washed and pelletized, what degrades on each pass, and the European recycling numbers behind the supply.
- GUIDERunning PCR Blown Film3 minWhy the bubble is the most direct test of a recycled resin, and what converters do about it today.
The numbers that frame it
The EU generated 79.7 million tonnes of packaging waste in 2023, of which 15.8 million tonnes was plastic. Overall packaging recycling was 67.5%, against a 70% target for 2030. Plastic packaging was at neither: the target is 55%, and in 2023 only Belgium and Latvia had passed it, while several member states were under 30%.
From 2030, Regulation (EU) 2025/40 requires 35% recycled content in plastic packaging that is not contact-sensitive, and 65% from 2040, averaged per plant and per year. Supply is uneven, demand becomes compulsory, and quality is the variable in between. That is the space additive suppliers sell into.
The chemistry, and what it is measured against
- GUIDEHow a reactive terpolymer changes HDPE3 minWhat the chemistry does to the chain, and how much of it the company publishes.
- GUIDEReactive terpolymers versus conventional additives3 minStabilizers, compatibilizers and chain extenders solve different problems, and only one of them rebuilds what recycling took.
- GUIDEPolypropylene recycling3 minThe second polyolefin stream, and why it is harder to buy than to describe.
What Nexam Chemical sells into this
NEXAMITE R305 and NexCircle R401 are the company's two products for recycled polyethylene, described on its own product page as melt strength enhancers that let a converter run higher recycled content with stable processing. Performance figures for them are the manufacturer's own; the individual guides say which ones we could verify and which we could not.