ATOMFAIR ALUMINUM-LAMINATED FILM 91ΜM RESEARCH GRADERESEARCH GRADE MATERIAL
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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 film requires storage inside an operational dry room or desiccant cabinet away from high thermal gradients, organic vapors, and liquid moisture to prevent moisture ingress and chemical degradation. The aluminum foil layer provides a hermetic barrier against oxygen and water vapor, but the material must be processed or sealed immediately upon atmospheric exposure to maintain integrity.
- Moisture Sensitivity: The soft aluminum foil layer (Grade 8079, 35 μm) acts as a core moisture barrier, but exposure to ambient humidity can compromise battery chemistry preservation if not sealed promptly.
- Electrolyte Compatibility: The modified polypropylene adhesive resin layer (20 μm) provides electrolyte resistance, but direct contact with aggressive non-aqueous liquid electrolytes requires verification of long-term stability under specific formulation conditions.
- Thermal Processing Window: The cast polypropylene inner layer (15 μm) enables heat-sealing within a wide thermal compression window, but deviations from recommended temperature and pressure may cause weak bond boundaries or leakage failures.
- Mechanical Integrity During Forming: The film's deep-drawing formability prevents macro-cracking and pinholes during folding or stamping, but excessive mechanical stress or improper tooling can induce local stress concentrations and material failure.
This procedure outlines the safe handling and heat-sealing steps for the aluminum-laminated film in a controlled laboratory environment. Proper storage, cutting, and sealing are critical to maintain the film's barrier properties and prevent contamination.
Required Equipment: Dry room or desiccant cabinet, Cleanroom-grade gloves, Heat sealer with temperature control, Cutting mat and sharp blade
- Retrieve film from storage
Remove the film roll from the moisture-impermeable containment shield inside a dry room or desiccant cabinet to minimize atmospheric exposure. - Cut film to desired dimensions
Use a clean cutting mat and sharp blade to cut the film to the required pouch cell dimensions, ensuring no contamination from dust or oils. - Align film layers for sealing
Place the cut film pieces with the inner polypropylene layers facing each other to form the pouch cavity, ensuring proper alignment for uniform seal strength. - Heat-seal the pouch edges
Apply the heat sealer at the recommended temperature and pressure within the CPP thermal compression window to create a high-strength bonded seal boundary. - Inspect seal integrity
Visually inspect the sealed edges for any gaps, wrinkles, or weak points that could lead to leakage during battery operation.
How does the aluminum foil grade (8079/JIS H4160) affect moisture barrier performance compared to other grades?
The use of soft aluminum foil Grade 8079/JIS H4160 at 35 μm ±10% provides a hermetic barrier against oxygen and water vapor permeation while maintaining exceptional deep-drawing formability to prevent cracking during folding and stamping. This trade-off between barrier integrity and mechanical flexibility is critical for pouch cell packaging where both moisture exclusion and complex geometry fabrication are required.
What electrolyte chemistries is this aluminum-laminated film compatible with?
This film is designed for direct continuous contact with aggressive non-aqueous liquid electrolyte mixtures without layer swelling or corrosive breakdown due to advanced chemical purification of raw materials. The modified polypropylene adhesive resin layer (20 μm ±10%) provides electrolyte resistance specifically for lithium-ion battery electrolytes used in Li-polymer pouch cells.
What storage conditions are required to maintain film integrity before use?
The film must be stored inside an operational dry room or desiccant cabinet away from high thermal gradients, organic vapors, and liquid moisture to prevent degradation of the moisture-sensitive aluminum barrier layer. Upon atmospheric exposure during processing or sealing must be performed immediately to avoid moisture adsorption that could compromise battery cycle life.
This 91μm aluminum-laminated film provides robust electrolyte resistance and hermetic moisture barrier via its 8079 aluminum core and chemically purified layers, but demands immediate processing in a dry environment and is restricted to controlled laboratory prototyping due to moisture sensitivity.
Positive
- Electrolyte resistance via advanced purification: Advanced chemical purification and raw material composition eliminate the risk of layer swelling or corrosive breakdown when in direct, continuous contact with aggressive non-aqueous liquid electrolyte mixtures.
- Hermetic moisture barrier with 8079 aluminum: The soft 8079 aluminum metallic matrix provides a flawless hermetic barrier against oxygen and H2O permeation, ensuring total preservation of active battery chemistry and cycle life.
Trade-offs
- Requires dry storage and immediate processing: Storage must be inside an operational dry room or desiccant cabinet away from high thermal gradients, organic vapors, and liquid moisture; material must be processed or sealed immediately upon atmospheric exposure.
- Limited to lab-scale prototyping use: Intended strictly for scientific validation and prototyping in controlled lab environments, not for production-scale manufacturing without further validation.
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).
