FREE SHIPPING with $59 or More. New Customer? Inquire for Major Discount & Free Samples! Online Payments & POs Accepted.

ATOMFAIR® a roll of white continuous composite separator membrane on a cardboard core with a strip extending.

PP-PE-PP Trilayer Separator Roll 25µm 400m ATOMFAIR®

$301.00

Institutional Procurement & Supply Compliance: As a verified US supplier, Atomfair accepts formal institutional Purchase Orders (POs), contract billing schedules, and custom procurement loops for university and national laboratories, and corporate R&D departments globally.

PP/PE/PP trilayer separator roll, battery grade, 25µm, 400m, 60mm. Porosity 40±5%, thermal shrink ≤5%. For Li-ion consumer cells. Order now.

SKU: AFMSQMPD202
Category:
Brands:

Description

ATOMFAIR® PP-PE-PP COMPOSITE BATTERY SEPARATOR ROLL

RESEARCH GRADE MATERIAL

Product Overview
Our research-grade polyolefin base membrane establishes ultimate cell-to-cell consistency and serves as an immutable baseline testing control during complex electrochemical evaluation phases. By eliminating structural and chemical variables, this advanced synthesis variant offers an optimized battery separator membrane evaluation platform. Secure competitive composite battery separator price scaling across all institutional procurement lines today.

Core Specifications & Dimensions
Parameter Technical Value
Product Form Roll (continuous length configuration)
Roll Size Dimensions 400 m Length × 60 mm Width
Thickness 25 μm ± 4 μm
Air Permeability 19 – 29 s / 100 ml
Porosity / Surface Density 40% ± 5% / 1.15 – 1.55 mg/cm²
Tensile Strength (MD / TD) ≥ 700 kgf/cm² / ≥ 70 kgf/cm²
Thermal Shrinkage (MD / TD) ≤ 5% / ≤ 1.0% (Validated via 85°C, 4h drying profile)
Outer Packaging Size 16 in × 8 in × 8 in (L × W × H)

Core Functional Advantages
  • Optimized Layered Structure: The PP/PE/PP three-layer design pairs the high mechanical stability of polypropylene (PP) matrices with the advanced low-temperature thermal shutdown action of polyethylene (PE) layers.
  • Excellent Ionic Conductivity: High uniform porosity controls target internal resistance thresholds to sustain effective lithium-ion transfer kinetics and rate capabilities.
  • Controlled Thermal Shrinkage: Minimal expansion anomalies under 85°C boundaries ensure steady barrier integration, minimizing short-circuit threats during elevated test conditions.

Application Scenarios
  • Continuous fabrication lines for compact consumer electronic modules (tablets, energy banks, wearable devices).
  • Electric Vehicle (EV) systems and industrial Energy Storage System (ESS) validation runs and pilot-scale prototyping.
  • Advanced matrix testing configurations focused on composite matrix crystalline boundary evaluation.
  • Custom lithium-ion element engineering operations requiring a balanced safety profile and long lifespan loops.

CHEMICAL COMPLIANCE: Polypropylene and polyethylene composite components align with verified [ISO 10993 chemical inertness standards], preventing unexpected interactions with volatile battery electrolytes.
TESTING STANDARDS: Mechanical tensile profiles are strictly calibrated to international ASTM D882 parameters to achieve uncompromised batch-to-batch structural uniformity.
THERMAL VERIFICATION: Material shrinkage tolerances satisfy rigid IEC 61960 battery element safety controls for high-output lithium layouts.
IMPORTANT NOTICE: Shelter separator roll modules inside low-humidity cleanroom settings to dodge ambient baseline degradation before device execution. For explicit custom roll lengths, alternative widths, or bulk institutional quotation parameters, reach out to our team.

TAILORED SOLUTIONS FOR RESEARCH
Contact our engineering team for technical support or official institutional quotations.
EMAIL: inquiry@atomfair.com

Manufacturer: Atomfair LLC
Brand: ATOMFAIR®

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). Return is governed by the Atomfair Return & Refund Policy (7-day technical return window).

Related products