POROUS PLASTIC FILTER DISC FOR BATTERY APPLICATIONS – POLYPOR™

POLYPOR™ Porous Plastic Filter Discs are manufactured using sintered porous plastic technology and are specially designed for battery venting, pressure regulation, and safety applications.

These discs provide controlled gas venting while preventing electrolyte leakage, dust ingress, flame propagation, and contamination, making them critical safety components in lead-acid, lithium-ion, Ni-Cd, Ni-MH, and industrial battery systems.

The uniform, interconnected pore structure ensures reliable performance throughout the battery life cycle.

Material Options for Battery Use

POLYPOR™ battery filter discs are typically manufactured from:

Polypropylene (PP) – excellent chemical resistance and durability
Polyethylene (PE / HDPE) – impact resistant and cost-effective
P.T.F.E (TFE) – for highly aggressive electrolytes and high-temperature applications

Material selection is based on electrolyte compatibility, operating temperature, and safety requirements.

Functional Role in Batteries

POLYPOR™ porous plastic filter discs perform multiple critical functions:

Controlled venting of gases (hydrogen, oxygen) generated during charging
Pressure equalisation inside the battery casing
Prevention of electrolyte splash or leakage
Barrier against dust, moisture, and contaminants
Flame arresting (with appropriate pore size selection)

Key Advantages of POLYPOR™ Battery Filter Discs

Enhanced Battery Safety

Prevents pressure build-up inside the battery
Reduces risk of casing deformation or rupture
Acts as a flame-arresting barrier when designed for vent applications

Electrolyte Retention

Porous structure allows gas escape while retaining liquid electrolyte
Minimizes electrolyte loss and improves battery efficiency

Controlled Gas Venting

Uniform pore distribution ensures predictable and repeatable gas flow
Prevents sudden pressure release

Chemical & Corrosion Resistance

Resistant to battery electrolytes, acids, alkalis, and vapours
Corrosion-free, non-metallic construction

Long Service Life

True depth porous structure – entire disc remains active
Does not clog easily
Stable performance over extended charging cycles

Lightweight & Impact Resistant

Withstands shocks, vibration, and handling during battery assembly
No risk of cracking or metal fatigue

Customisable Design

Disc diameter, thickness, and pore size tailored to battery design
Hydrophobic versions available to repel moisture
Sealing-type edges for leak-proof integration

Typical Technical Characteristics

Technology: Sintered porous plastic
Pore size range: 5 to 250 microns (application specific)
Structure: Uniform, interconnected pores
Surface types: Hydrophobic / sealing type
Operating media: Battery gases and electrolytes

Battery Applications

Lead-acid batteries (automotive & industrial)
Lithium-ion battery packs
UPS and inverter batteries
Telecom and data-centre batteries
EV and energy storage systems
Industrial traction batteries

End-Use Benefits for Battery Manufacturers

Improved battery safety compliance
Reduced electrolyte loss
Longer battery life
Consistent venting performance
Cost-effective alternative to metal or ceramic vents
Easy integration into existing battery designs

Why POLYPOR™ by BLINEX FILTER-COAT PVT LTD

Decades of expertise in sintered porous plastic technology
Proven solutions for battery venting and safety
Precision pore size and dimensional control
Custom engineering support
Export-oriented quality standards

BLINEX FILTER – COAT PVT. LTD.

POLYPOR™ – Sintered Porous Plastic Filters
TEFCOT™ – P.T.F.E / Fluoropolymer Coatings
“50 Years of Global Trust”

📍 Address: BLINEX FILTER – COAT PVT. LTD.
A-3, Nand Bhuvan Industrial Estate, Mahakali Caves Road, Andheri (East), Mumbai – 400 093, India

📩 Contact Us for Custom Orders & Inquiries

👤 KIRTAN DHAMI
(Director – Technical & Exports)

📞 Mobile: +91 98920 60191

📧 Email: info@blinexindia.com | kirtandhami@gmail.com

🌐 Website: www.blinexindia.com