PP PE Nonwoven Battery Separator Base Film 30μm, 65.5 mm x 500 m
Product Overview
This nonwoven PP/PE separator material is supplied in a 65.5 mm x 500 m roll format. The specification covers thickness, density, porosity, water absorption, tensile strength, and air permeability.
Product Details
| Product name | PP PE Nonwoven Battery Separator Base Film 30μm, 65.5 mm x 500 m |
| Product format | 30um x 65.5 mm x 500m |
| Process and coating configuration | Uncoated nonwoven separator |
| Material | Nonwoven PP/PE |
| Thickness | 30 μm |
| Width | 65.5 mm |
| Roll length | 500 m |
| Density | 0.40 g/cm³ |
| Basis weight | 12.0 g/m² |
| Porosity | 73% |
| Tensile strength | 7.8 N/15 mm; 0.8 kgf/15 mm |
| Water absorption | 20 mm/10 min |
| Air permeability | 80-150 sec/100 ml |
Important Note
Note: Slight variations may occur between different production lots of the battery separator. The performance indicators are guaranteed to comply with our product specifications.
Related Products
| Research Need | Related Product | Best For |
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| Compare nearby specifications | PP PE Nonwoven Battery Separator Base Film 30μm, 120 mm x 100 m | Same PP PE nonwoven separator family for direct specification comparison. |
| Review same-family format | PP PE Nonwoven Battery Separator Base Film 30μm, 60 mm x 120 m | Same PP PE nonwoven separator family for direct specification comparison. |
| Check alternate format | PP PE PP Composite Battery Separator Base Film 16μm, 60 mm x 100 m | Same separator category for adjacent material or format comparison. |
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TAILORED SOLUTIONS FOR RESEARCH
Contact our engineering team for technical support or official institutional quotations.
EMAIL: inquiry@atomfair.com
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Manufacturer: Atomfair LLC
Brand: ATOMFAIR®
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This nonwoven PP/PE separator film is moisture-sensitive and must be stored in a dry, controlled environment to prevent degradation. The material requires careful handling to avoid physical damage such as tearing or wrinkling, which can compromise its structural integrity.
- Moisture Sensitivity: Maintain storage humidity below 30% RH to prevent moisture absorption that can affect performance.
- Mechanical Integrity: Avoid sharp edges or tensile loads exceeding 7.8 N/15 mm to prevent tearing or deformation.
What is the air permeability range of the PP PE nonwoven battery separator base film and how does it affect battery performance?
The air permeability is specified as 80-150 sec/100 ml. This range indicates the separator's resistance to gas flow, which is critical for preventing thermal runaway and ensuring uniform ion transport. The 73% porosity and 30 μm thickness work together to balance ionic conductivity with mechanical strength, as reflected in the tensile strength of 7.8 N/15 mm.
Can this 30 μm nonwoven PP/PE separator be used in lithium-ion battery cells with a 65.5 mm width, and what are the key compatibility constraints?
Yes, the 65.5 mm width and 500 m roll length are designed for automated cell winding processes. The uncoated nonwoven PP/PE material provides a basis weight of 12.0 g/m² and a density of 0.40 g/cm³, which are suitable for standard lithium-ion electrolytes. However, the water absorption of 20 mm/10 min indicates a need for careful electrolyte wetting control, and the 30 μm thickness may require adjustments in cell stacking pressure to maintain dimensional stability.
What handling and storage conditions are required for this nonwoven separator to maintain its specified properties?
The separator should be stored in a dry, clean environment to prevent moisture uptake, as the water absorption of 20 mm/10 min suggests hygroscopic behavior. The 30 μm thickness and 500 m length require careful handling to avoid creasing or tearing, given the tensile strength of 7.8 N/15 mm. It is recommended to use the roll within a controlled temperature and humidity range, and to avoid exposure to UV light or ozone, which could degrade the PP/PE polymer matrix.
This 30 μm PP/PE nonwoven separator base film, supplied as a 65.5 mm x 500 m roll, offers a balanced combination of high porosity (73%) and moderate air permeability (80-150 sec/100 ml), making it suitable for electrolyte wetting and ionic transport in battery cell prototyping. The uncoated surface and specified tensile strength (7.8 N/15 mm) define its mechanical handling limits, while the 500 m roll length supports extended coating or lamination runs.
Positive
- High porosity for electrolyte uptake: The 73% porosity, combined with a water absorption of 20 mm/10 min, supports rapid electrolyte wetting, which is critical for consistent cell performance in research-scale battery assembly.
- Extended roll length for process efficiency: The 500 m roll length minimizes splice frequency during coating or lamination, reducing downtime and improving throughput in pilot-scale manufacturing.
Trade-offs
- Uncoated surface limits thermal stability: As an uncoated nonwoven separator, this film lacks ceramic or adhesive coatings, which may reduce its resistance to thermal shrinkage and mechanical puncture under high-temperature or high-pressure cell conditions.
- Lot-to-lot variation in air permeability: The air permeability range of 80-150 sec/100 ml indicates potential variability between production lots, which could affect the consistency of ionic resistance and require re-qualification for each batch in sensitive applications.
Every advanced material, component, equipment, and instrument in our catalog is backed by rigorous testing. We maintain strict internal quality management frameworks and align with CE conformity metrics to deliver transparent, reproducible performance data via our public open-science repository.
To request raw batch performance data, submit formal vendor registration paperwork, or execute a fast-turnaround R&D manufacturing loop, contact us at inquiry@atomfair.com.
Item is dispatched under the Atomfair Shipping & Delivery Framework (Free worldwide shipping on orders over $59 USD excl. heavy equipment). Return is governed by the Atomfair Return & Refund Policy (7-day technical return window).
