Regrind vs Regranulate — Two Forms of Recycled Plastic
Regrind is plastic waste reduced to irregular flakes by shredding or milling. Regranulate is regrind taken a step further — cleaned, melted and re-pelletised into uniform granules.
What they are
Regrind is plastic waste that has been shredded or milled into small, irregularly shaped pieces, without being melted or re-pelletised. It is the more basic of the two forms and carries minimal extra heat history.
Regranulate starts from the same collected and shredded material, but goes further: after shredding, it is cleaned, melted and extruded through a die, then cut into uniform pellets — a direct drop-in replacement for virgin granules.
How each is made
- Regrind: collect and sort the waste stream, then shred or mill it into flakes.
- Regranulate: collect and sort, shred to regrind, clean to remove contaminants, then melt-extrude and pelletise into uniform granules.
Why the distinction matters
Regrind can often be used directly in processes that tolerate irregular feedstock, such as some injection-moulding or extrusion lines, or used as an intermediate step before further processing. Regranulate’s uniform pellet size and melt history make it easier to dose, blend and process consistently — closer in handling to virgin resin.
How Sinox supplies both
Sinox’s catalog states the exact form of every grade — regrind, regranulate or recompound — alongside its material stream (PCR/PIR), so you can match the level of processing to your line.
Match a grade from the live catalogue, or send us a spec.