Read from the outside in
PET / AL / PE in a catalogue reference shows the layer sequence. Numbers and µm units, when provided, describe those layer thicknesses. A layer illustration explains the arrangement; it is not a production-scale drawing.
| Layer | What to discuss |
|---|---|
| Outer | Print surface and appearance |
| Barrier | Protection required by the product |
| Inner | Contact with the contents and sealing needs |
Separate oxygen and moisture requirements
OTR describes oxygen transmission rate, while WVTR describes water-vapour transmission rate. They are different measures. When comparing values, ask for the test conditions so the results can be interpreted on a comparable basis.
Explore this concept: SRF · Barrier film terminology ↗
Describe the product before asking for a structure
A material brief should explain what matters: aroma, texture, appearance, or another product characteristic. Include the filling process and distribution conditions. This gives the team a basis for reviewing candidate materials rather than copying another pack’s structure.
- Product and contents characteristics.
- Filling, storage, and delivery conditions.
- Performance targets and how they will be validated.
Agree the structure in the final specification
One pouch shape can use several material structures. Record the structure, thickness, seals, and features alongside dimensions and artwork. Catalogue references support early discussions; the agreed specification becomes the order reference.
Read the sources.
These sources explain general packaging concepts. Other suppliers’ products, parameters, and services are not Savora specifications or service promises.