FDA
FDA 21 CFR 1040.10 - Laser Product Performance Standards
Ikmanda RoswatiPh.D.Indonesia
Ultrafast Laser Physics and Material InteractionsPublished
Dec 11, 2025
Polyimide Laser Cleaning
When laser cleaning polyimide, you must account for its exceptional heat resistance that keeps the material stable even under intense thermal stress, preventing warping or breakdown that plagues lesser plastics during the process so you achieve a clean surface without compromising structural integrity
Laser-Material Interaction
Polyimide Laser Cleaning Material Characteristics
Density
1.4
g/cm³
0.84
1.4
2.2
Surface Roughness
1
μm
0
1
2
Tensile Strength
231
MPa
10
231
400
Youngs Modulus
2.5
GPa
0.01
2.5
5,000
Hardness
0.35
GPa
51.8
0.35
123
Flexural Strength
250
MPa
20.7
250
96.4
Oxidation Resistance
3
μm/year
0.76
3
1,575
Corrosion Resistance
0.88
mm/year
0
0.88
105
Compressive Strength
231
MPa
20
231
200
Fracture Toughness
6
MPa m^{1/2}
0.7
6
2.9
Electrical Resistivity
1e15
Ω·m
9.5e12
1e15
1e17
Polyimide surface magnification
Before Treatment
At 1000x magnification, the polyimide surface looks cluttered with scattered dirt particles and sticky residues everywhere. I've seen how these contaminants form uneven clumps that roughen the entire area. They hide the material's base texture under a dull, patchy layer.
After Treatment
After laser treatment at 1000x, the polyimide surface appears smooth and free of all visible debris now. I've noticed the treatment restores a uniform, glossy finish across every spot. No residues remain to mar the clean, even
Regulatory Standards & Compliance
ANSI
ANSI Z136.1 - Safe Use of Lasers
Polyimide Laser Cleaning Laser Cleaning FAQs
Q: How can I prevent Polyimide from charring during laser cleaning?
A: You must start with a lower power setting right away to avoid overheating, since Polyimide holds heat poorly and can char easily compared to metals like aluminum that dissipate it faster. Make sure you use short pulses to control the energy input, which helps the material absorb the laser without building up damaging temperatures. This approach keeps the surface clean while preserving Polyimide's tough, flexible structure for ongoing use.
Q: What's the best way to remove contaminants from Polyimide without scratching it?
A: When laser cleaning Polyimide, you'll want to scan the surface slowly at first to lift dirt gently, unlike with harder plastics that need aggressive blasts and risk micro-scratches. Keep the beam focused tightly so it targets only the top layer where contaminants hide, preventing deeper penetration that could weaken the material's inherent strength. You should test on a small area to fine-tune, ensuring a smooth finish that matches Polyimide's naturally low surface
Related Plastic › Thermoplastic Materials
Polyimide Laser Cleaning Dataset Download
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