Material Knowledge
How packaging materials and laminate structures behave.
Retort pouch specifications: 121 °C, 135 °C, and what the structure has to do
Sterilising food inside its own pack is the hardest thing asked of a flexible structure. Here is what the specification has to say.
Barrier explained: OTR, WVTR and how to specify them
Two numbers decide how long a pack protects what is in it. Both are meaningless without the conditions they were measured at.
How to read a film structure: PET/AL/PE and the rest
Every quotation carries a string like PET/NY/AL/PE. It is not a product code — it is the pack described layer by layer, from the outside in.
PET/AL/PE against mono-material structures
A laminate stacks different films so each layer does one job. A mono-material uses one polymer so it can be recycled. Here is what you gain and what you give up.