Shiza Advanced Polymer LLP (SAPL) logo
Process & quality control

Every granule, controlled from start to finish

Raw material se leke finished granule tak — the entire production journey happens in-house. Here's exactly how we do it, and how we keep quality consistent.

The journey

Nine controlled stages

A single, integrated line — so nothing is outsourced and nothing is left to chance.

01

Raw Material Sourcing

We source quality post-industrial polycarbonate feedstock from trusted channels, screening it for suitability before it ever enters the line.

02

Sorting

Material is carefully sorted by type and colour to remove contaminants and ensure a clean, consistent input stream.

03

Grinding

Sorted material is size-reduced into regrind, creating a uniform particle size ready for reprocessing.

04

Reprocessing

The regrind is melted and homogenised under controlled conditions, restoring a consistent, workable polymer melt.

05

Filtration

Melt filtration removes fine impurities, delivering clean material that protects your tools and downstream quality.

06

Pelletizing

The filtered melt is extruded and cut into uniform granules — the free-flowing pellets your machines are built for.

07

Cooling & Drying

Pellets are cooled and dried to tight moisture targets, critical for defect-free moulding of polycarbonate.

08

Quality Inspection

Each batch is checked against our specifications — density, melt flow, moisture and appearance — before approval.

09

Packaging & Dispatch

Approved granules are packed, labelled and dispatched, ready to run straight off the pallet on your line.

Quality control

Checked at every stage, approved before dispatch

Consistency isn't luck — it's inspection. Each batch is verified against our specifications so what leaves our facility runs cleanly on yours.

Incoming raw material screening
Melt filtration to remove impurities
Density & melt flow (MFI) verification
Moisture control after drying
Visual & colour consistency checks
Batch approval before dispatch

Have a spec to match?

Share your target properties and volumes — we'll tell you which grade fits and how fast we can supply.