BSF Materials™

BSF Materials™

Advanced separator materialsfor safer lithium-ion batteries.

High-performance PE, PP and coated films engineered for global lithium-ion battery manufacturers.

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Macro cross-section of a multilayer battery separator with a ceramic particle layer

Safety layer

The material behind battery safety.

Separator film performs four critical functions inside every lithium-ion cell.

Prevent internal short circuits

Maintain physical separation between the positive and negative electrodes.

Enable ion transport

Support electrolyte movement through a controlled porous structure.

Improve thermal safety

Provide a material platform for stable cell behavior and functional coatings.

Support long battery life

Help preserve consistent separation throughout repeated cell operation.

Separator film solutions.

Microscopy view of a microporous separator membrane structure

Wet Process PE Separator Film

Ultra-thin base separator film with high tensile strength, high porosity and excellent consistency.

3-20 μmView product
Lithium Battery Separator FilmPP Separator FilmCeramic Coated SeparatorPVDF Coated SeparatorFunctional Coated Separator

Engineering performance into every micron.

3-20 μmWet process PE thickness range
High tensile strength
High porosity
Thermal stability
Batch consistency

Final specifications are matched to cell design and process requirements.

Separator materials for demanding cell platforms.

Electric Vehicles

Energy Storage Systems

Consumer Electronics

Power Tools

Industrial Batteries

Discuss your application
Precision roll-to-roll separator film production line in a clean manufacturing environment

Manufacturing excellence.

Precision film production depends on controlled processes, stable handling and consistent quality decisions.

  • Advanced production lines
  • Precision process control
  • Stable production capability
  • Global supply support
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Quality control

Quality you can trust.

Quality control connects incoming materials, online monitoring, performance testing and batch records.

Incoming Material InspectionOnline MonitoringPerformance TestingBatch Traceability
See our quality approach
Separator film sample being inspected under precision laboratory equipment

Technical resources for qualified projects.

Request the documents relevant to your material evaluation and application.

Discuss your separator requirements.

Share your cell application, material target and expected demand with our technical team.

Request Separator Solutionbusiness@BatterySeparatorFilm.com