Manual vs. Laser: The "Zero-Damage" Guide to Blue Film Removal
Release time:
2025-12-08
Laser Scoring (Laser-Assisted Removal, or LARP) is an industry-approved safety process which utilizes laser light to safely cut (score) protective PET film without penetrating battery casing. Unlike manual peeling which relies on sharp blades to initiate tear-away, LARP allows operators to peel easily with zero risk of scratching aluminum substrate and ensure 100% Hi-Pot safety.
What is Laser-Assisted Blue Film Removal?
Laser Scoring (Laser-Assisted Removal, or LARP) is an industry-approved safety process which utilizes laser light to safely cut (score) protective PET film without penetrating battery casing. Unlike manual peeling which relies on sharp blades to initiate tear-away, LARP allows operators to peel easily with zero risk of scratching aluminum substrate and ensure 100% Hi-Pot safety.
Are You Playing Risk with Cell Safety When Removing Blue Film
Removing PET protective film for prismatic cell manufacturers is an intricate task, fraught with risk. Not just in terms of speed; more so with regards to Surface Damage. Traditional methods involve operators using knives or scrapers to lift it off - often leading to micro-scratches on either the insulation layer or aluminum can itself. Huiyao Laser's guide illustrates why Laser Scoring stands as the safer 'Blade-Free' standard when it comes to modern battery lines.
1.The Danger of the "Knife"
Manual peeling might look easy, but it often begins with cutting. Operators use utility knives or mechanical blades to slice through the film before peeling. This poses serious safety risks:
Scratch Risk (Short Circuits): Just 0.1mm blade slippage can scratch an aluminum case, creating stress concentration points or insulation failure risks (Hi-Pot failure).
Reducing Residue Inconsistency: Manual cutting often produces uneven edges or adhesive strips that are difficult to remove, leaving unsightly jagged edges behind.
2.The Solution: Blade-Free Laser Scoring
How can one cut film without touching cells? Laser Scoring offers the solution. Huiyao's system scans blue films with high-speed lasers, creating precise peel lines or "easy-tear" patterns on them for peeling off.
Non-Contact Cutting: The laser cuts through all layers of PET film without stopping exactly at its interface with metal.
Zero Scratches: No metal blades ever touch your battery cell casing, ensuring its integrity is never compromised.
Easy Peeling: Laser technology creates a perfect "tab," or cut line, enabling operators to effortlessly peel the film in one smooth movement without picking or scraping.
Proprietary Engineering Insight: The "Fluence Window"
Why "Zero Damage" is mathematically guaranteed:
Perfect scoring requires operating within an exact Process Window. The Laser Fluence (Energy Density) should be sufficient to vaporize PET film but low enough for it not to reflect off aluminum surfaces.
The Engineering Logic:
F_th (PET) < F_Op < F_th (Aluminum)
F_Op: Operating Laser Fluence for Scoring.
F_th (PET): Ablation Threshold of the Blue Film (Energy to cut the plastic).
F_th (Aluminum): Damage Threshold of the Case (Energy to mark the metal).
Huiyao's Control: By strictly clamping F_Op in this window, we ensure the film is sliced cleanly while the battery case remains pristine.
3. Scorecard: Knife Peeling vs. Laser Scoring
|
Metric |
Manual with Knife |
Huiyao Laser Scoring |
|
Method |
Mechanical Cutting (Contact) |
Laser Ablation (Non-Contact) |
|
Cell Damage Risk |
High (Blade scratches common) |
Zero (Physics-limited depth) |
|
Process Safety |
Low (Risk of operator injury) |
High (Class 1 Safety Enclosure) |
|
Peel Efficiency |
Slow (Hard to start peel) |
Fast (Pre-cut "Easy Peel" lines) |
|
Quality Consistency |
Variable |
100% Consistent Depth |
Conclusion
Eliminate Scratches from Your Line Don't let a simple utility knife compromise your battery's safety rating. Switch to Blade-Free Laser Scoring for a safer, faster, and standardized Blue Film removal process.
AUTHOR: The Huiyao Laser Engineering Team
A collective of solution architects and process engineers at Huiyao Laser, 100% dedicated to solving the core bottlenecks in EV and ESS battery manufacturing.
© 2025 Huiyao Laser Technology Co., Ltd. All Rights Reserved.
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