PP PE PP Composite Battery Separator Base Film 20μm, 60 mm x 100 m
Product Overview
Dry-process PP/PE/PP composite separator base film, model UP3074, supplied as UP3074 three-layerPP/PE/PP
60mmx100 m. The source data identifies this as a non-Celgard three-layer structure.
Product Details
| Product name | PP PE PP Composite Battery Separator Base Film 20μm, 60 mm x 100 m |
| Source specification | UP3074 three-layerPP/PE/PP 60mmx100 m |
| Process / coating side | Dry process; uncoated composite |
| Material | Three-layer PP/PE/PP composite |
| Model | UP3074 |
| Process | Dry process |
| Structure | PP/PE/PP |
| Thickness | 20 μm |
| Width | 60 mm |
| Roll length | 100 m |
| Air permeability | 415 sec/100 cc |
| Porosity | 43% |
| Tensile strength MD / TD | 165 / 12 MPa |
| Elongation MD / TD | 95% / >100 |
| Thermal shrinkage MD | 5.6% |
| Celgard status | Non-Celgard |
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 |
|---|---|---|
| Compare nearby specifications | PP PE PP Composite Battery Separator Base Film 25μm, 60 mm x 100 m | Same PP PE PP composite separator family for direct specification comparison. |
| Review same-family format | PP PE PP Composite Battery Separator Base Film 16μm, 60 mm x 100 m | Same PP PE PP composite separator family for direct specification comparison. |
| Check alternate format | PP PE Nonwoven Battery Separator Base Film 30μm, 60 mm x 120 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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Atomfair PP-PE-PP composite separator roll is a trilayer membrane for lithium-ion battery electrode isolation. The material has specific thermal shrinkage and air permeability constraints that dictate handling and storage conditions.
- Thermal Shrinkage Constraint: The separator must not be exposed to temperatures exceeding 85°C for extended periods to prevent MD shrinkage above 5% and TD shrinkage above 1.0%.
- Air Permeability Constraint: The separator's air permeability specification (19-29 s/100ml) must be maintained by preventing contamination and compaction during handling.
- Mechanical Stress Constraint: Tensile loads must be kept below MD 700 kgf/cm² and TD 70 kgf/cm² to avoid permanent deformation of the membrane.
How does the PP/PE/PP three-layer structure of the Atomfair separator balance ionic conductivity and thermal shutdown performance for lithium-ion batteries?
The three-layer PP/PE/PP structure achieves a balance by combining the mechanical strength of PP with the thermal shutdown capability of PE. The air permeability of 19-29s/100ml and porosity of 40±5% ensure efficient lithium-ion transport, supporting cycle life and rate performance, while the PE layer provides shutdown at elevated temperatures to prevent thermal runaway without compromising structural integrity.
Can the Atomfair continuous composite separator roll be directly used in laboratory-scale coin cell assembly, or does it require additional processing?
The separator is supplied as a continuous roll (400m length, 60mm width, 25 ±4µm thickness), which is optimized for automated winding in pilot and mass production lines. For laboratory-scale coin cell assembly, the roll must be cut into smaller sheets with clean edges and handled carefully to avoid introducing wrinkles or contamination, as the thin 25µm film is delicate.
What storage and handling conditions are required to maintain the thermal and mechanical properties of the Atomfair separator roll?
The separator must be stored in a clean, dry environment to maintain its surface density (1.15–1.55 mg/cm²) and low thermal shrinkage (MD ≤5%, TD ≤1% at 85°C). Handling should avoid excessive tension or creasing to preserve tensile strength (MD ≥700 kgf/cm², TD ≥70 kgf/cm²). The roll should be kept in its protective packaging until use to prevent mechanical damage.
This three-layer composite separator delivers a controlled thermal shutdown barrier and stable ionic conductivity for lithium-ion batteries, but its roll-only format and ±4μm thickness tolerance demand precise unwinding equipment and stack pressure management.
Positive
- Three-Layer Shutdown Safety Mechanism: The PP/PE/PP structure leverages PE's thermal shutdown property to prevent thermal runaway during overheating, while PP maintains mechanical integrity during normal operation.
- Uniform Porosity for Ionic Transport: Uniform porosity (40±5%) and pore distribution ensure efficient lithium-ion transport, reducing ion transfer resistance and improving cycle life and rate discharge performance.
Trade-offs
- Roll-Form Handling Constraints: Supplied only as a continuous 400m roll (60mm width), requiring unwinding and slitting equipment for integration into laboratory-scale or custom cell assembly workflows.
- Thickness Tolerance Variability: The 25±4μm thickness specification introduces up to 16% variation, which may affect cell stack pressure uniformity and require compensation in precision battery assembly.
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).
