Materials
- Packaging Film Types
- PE
- BOPP
- PET
- Nylon
- EVOH
- Barrier Film
- High Barrier Film
- Shrink Film
- PVC Shrink
- PETG Shrink
- POF Shrink
- Aluminum Foil
- Blister Foil
- Cold Form Foil
- PET vs BOPP
- BOPP vs CPP
- LDPE vs LLDPE

Materials · Performance · Machines
Technical resources covering flexible packaging films, foils, laminates, packaging formats, barrier performance and packaging-machine compatibility.
Explore materialsThe topic chain
Every guide on this site follows the same path: what the material is, how it performs, which format it becomes, how it runs on the machine and where it is used.
Polymer films, shrink films, barrier films, aluminum foil and laminates, and the role each layer plays in a structure.
Oxygen and water vapor transmission, seal initiation temperature and the tests behind the numbers on a data sheet.
Stand-up pouches, flow wraps, retort pouches and other pack types, and what each one asks of the material.
What VFFS machines, flow wrappers and pouch machines need from a film or a premade pouch.
Structures and formats matched to snacks, coffee, pharmaceuticals and other products.
Mono-material structures, recyclability and how material changes affect sealing and barrier.
Machine compatibility
A film can meet every barrier target and still fail on the machine. These guides cover the properties each type of packaging equipment depends on.
Flow wrap film guide: common structures, cold seal vs heat seal, COF, sealing, registration, tracking and troubleshooting for horizontal flow wrappers.
VFFS film guide: common structures, thickness, barrier, sealing, COF, tracking and troubleshooting for vertical form fill seal machines and rollstock.
Premade pouch packaging materials explained: tolerances, stiffness, sealants, zippers and the specs pouch machines need to open, fill and seal reliably.
Stick pack film is narrow laminate rollstock formed into slim tubes. See structures, sealing, lane slitting, tear notches, COF and machine checks.
Sachet packaging film runs on 3-side and 4-side seal machines. Compare structures, sealing, tear notches and fixes for leaks and seal-through-contamination.
Shrink wrapping film must suit the sealer and tunnel. See which films fit L-sealers, side sealers and bundlers, seal methods and how to fix common defects.
Sustainable packaging
Moving from mixed-material laminates to recyclable structures changes more than the material list. It affects barrier, heat resistance and how the film behaves in the sealing jaws.
Start with the overview: what counts as flexible packaging, how films and laminates are made, and how rollstock differs from premade pouches.
Read the overviewTopic library
Every published guide, grouped by the question it answers.
Technical guides
Long-form guides to the specifications that decide whether a pack protects the product and runs on the line.
VFFS film guide: common structures, thickness, barrier, sealing, COF, tracking and troubleshooting for vertical form fill seal machines and rollstock.
Flow wrap film guide: common structures, cold seal vs heat seal, COF, sealing, registration, tracking and troubleshooting for horizontal flow wrappers.
High barrier film keeps oxygen and moisture transmission very low. See common structures, trade-offs, typical products and how to specify one.
Oxygen transmission rate (OTR) measures how much oxygen passes through a film. Learn the units, test methods, conditions and how OTR relates to shelf life.
Water vapor transmission rate (WVTR) measures how much moisture passes through a film. Learn units, test conditions, ASTM F1249, E96 and how to read the number.
Mono material packaging explained: how mono-PE and mono-PP structures are built, their barrier limits, and what they change on the packaging line.
A retort pouch is a filled, sealed flexible pack sterilized in a retort. Learn the structures, seal integrity needs, regulations and typical uses.
Compare flexible packaging film specifications on one unit, with method, humidity, and dwell beside every oxygen, moisture, and seal number.
The selection guides cover comparing data sheets, checking a supplier and controlling a first order of printed film or pouches.
View selection guides