Knowledge base
Plain-language explainers behind every Sinox grade — what the specifications mean, which certifications apply, and how recycled polymers fit the circular economy.
Specifications, quality figures and the circular-economy basics.
Circular Economy & Cradle-to-Cradle
The closed-loop model behind recycled plastics and Sinox's cradle-to-cradle vision.
Read → ConceptFlash and Angel Hair — Injection-Moulding Fibres and Edge Flash
What flash (sometimes called "angel hair") is in injection moulding, why it forms, and how feedstock consistency affects it.
Read → ConceptFood-Contact Recyclates
What makes recycled plastic suitable for food contact under EFSA and FDA frameworks.
Read → ConceptGlass-Fibre Reinforcement
How glass-fibre content changes a polymer's properties and how to read GF percentages on recyclate.
Read → ConceptIntrinsic Viscosity (IV) — Reading PET Quality
What intrinsic viscosity (IV) means for PET recyclate and why it determines which applications a batch can serve.
Read → ConceptMFR / MFI Explained — Melt Flow Rate
What melt flow rate (MFR/MFI) measures, how it is reported, and why it matters when specifying recyclate.
Read → ConceptPCR vs PIR — Post-Consumer and Post-Industrial Recyclate
The difference between post-consumer (PCR) and post-industrial (PIR) recycled plastic, and when each matters.
Read → ConceptRegrind vs Regranulate — Two Forms of Recycled Plastic
The difference between regrind (shredded flakes) and regranulate (re-pelletised recyclate), how each is made, and when to specify which one.
Read →Every recyclate grade by base polymer. Start at the recyclates overview.
The standards behind our food-safe, recycled-content and ocean-bound claims.
Match a grade from the live catalogue, or send us a spec.