Materials / grade-specific review
Aluminium Laminated Pouch Film
Three-layer laminate — nylon, aluminium foil, cast polypropylene — for soft-pack cell enclosure, with published heat-seal parameters.
APPLICATION & GRADE
Grade / designation: SZ-M1-CS01
Grade and specification to be confirmed
Discuss Material Requirements ↗Typical applications
Pouch cell enclosure for lithium-ion and sodium-ion
Coin-cell alternative for larger footprint cells
Solid-state cell enclosure
Laboratory hand-built pouch cells
Grade & supply review
Dimensions built to your drawing
Wall thickness and alloy temper
Surface treatment and conversion coating
Terminal, vent and fill-port configuration
Representative image. Actual material appearance varies by grade and lot — request a current photograph or sample.
About this material
A pouch cell has no rigid can — the laminate film is the only barrier between the electrode stack and the atmosphere. It is a three-layer composite: oriented nylon on the outside for puncture and abrasion resistance, a 40 μm aluminium foil in the middle doing the actual moisture and oxygen blocking, and cast polypropylene on the inside to bond to the tabs and to the film itself during heat sealing.
Because the film is thin and the seal is the only closure, handling dominates yield. A pinhole, a crease along a fold line, or a seal made at the wrong temperature all show up later as electrolyte leakage or moisture ingress. Every roll ships with a parameter sheet giving the seal temperature, pressure and dwell window for the CPP grade supplied.
Documentation, controls and care
Quality controls
- WVTR tested per lot
- Seal strength verified by destructive test
- Pinhole inspection across the web
- Thickness and layer bonding checked
Handling & storage
- Store flat below 20 °C — creases become leak paths and cannot be reversed.
- Keep sealed with desiccant until immediate use.
- Run a trial seal on scrap film before sealing a real cell; a good seal tears the film rather than peeling.
Grades on this page are references used to describe capability; they are not a fixed product list.
Specification values are typical windows compiled from public technical references and supplier
datasheets, and are provided for selection guidance only. The specification delivered against your
order is agreed in writing, and measured values are confirmed on the batch certificate of analysis.
Materials listed here may be hazardous; they must be handled by qualified personnel under applicable
regulations.
Material specifications
| Structure | ONY 25 / Al foil 40 / CPP 40 μm |
|---|---|
| Total thickness | 113 μm |
| Water vapour transmission | <0.01 g/m²·24 h |
| Heat-seal temperature | 170–195 °C |
| Heat-seal pressure | 0.3–0.6 MPa |
| Heat-seal dwell | 3–6 s |
| Cooling under pressure | 5–10 s |
| Seal strength | ≥60 N |
| CPP / Al peel strength | ≥8 N |
| Standard sheet size | 200 × 100 mm pre-cut |
| Roll width | Up to 400 mm |
| Storage | Below 20 °C, dry, flat |
Grade & packaging options
Pre-cut sheets in custom dimensions
Thicker 152 μm laminate for large formats
Formed pouch cavities on request
Steel and aluminium cans for cylindrical cells
Supply boundaries
Reference grade, not a fixed catalogue item. Capacity, particle size, coating, purity and packaging are set to the specification your process needs — the delivered grade may differ from the values shown here.
Packaging & handling
Sample pack | 10 sheets with desiccant
Laboratory pack | 50 / 100 sheets
Production pack | Roll, 200–500 m
Information for material review
Drawing, dimensions and tolerances
The component it mates with, and the joint method
Quantity per lot and repeat-order pattern
Standards, certification or documentation you work to
Training in China
Training at our China facility is available for this product. Scope, schedule and language are agreed for each project.
Related products
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