Matte Black Polyimide Tape (K-650A)
Matte Black Polyimide Tape | Low-Glare High-Temperature Masking & Electrical Insulation
Matte Black PI Film Tape with Silicone Adhesive for Reflow, Wave Soldering, Light Shielding, and Inspection-Sensitive Applications
Matte Black Polyimide Tape is made with a black polyimide (PI) film backing coated with a high-temperature silicone pressure-sensitive adhesive (PSA). It is designed for masking, insulation, and protection applications where heat resistance, dimensional stability, and a low-glare surface are important.
Compared with gloss black or standard amber polyimide tape, the matte black finish provides lower reflectivity, which can help reduce unwanted glare in inspection-sensitive and light-shielding applications. It is also suitable for high-temperature processing environments where electrical insulation and masking accuracy are required.
Key Features & Benefits
- Matte black low-glare surface for reduced reflectivity in inspection-sensitive builds
- High-temperature silicone adhesive system for demanding thermal masking workflows
- Suitable for reflow, wave soldering, thermal curing, and other heat-exposed processes
- Polyimide film provides good dimensional stability and electrical insulation
- Converting-ready supply: custom widths, rolls, sheets, and die-cut parts
- Optional liner formats available for cleaner die-cutting and application
Typical Applications
PCB High-Temperature Masking
Reflow soldering masking
Wave soldering masking and protection
Selected gold finger, contact-area, and inspection-sensitive masking applications
Selected Light-Shielding Electronic Applications
Light shielding in selected electronic assemblies
Low-glare masking or protection near inspection-sensitive components
Matte-black identification or surface coverage where reduced reflectivity is preferred
Industrial High-Temperature Masking
Powder coating masking
Selected masking during paint-curing and other thermal-curing processes
Fixture and tool masking where heat resistance and PI film dimensional stability are required
Electrical Insulation and Wire Wrapping
- Coil and lead insulation
- Wire and cable wrapping in heat-exposed assemblies
- Selected local insulation for transformer leads and coil areas
Engineering Insight: Common Failures to Avoid (and How to Prevent Them)
Residue After Heat Aging
- Cause: long dwell time at temperature, sensitive substrates, or unsuitable removal conditions
- Prevention: qualify by peak temperature, dwell time, substrate type, and removal conditions; peel slowly at a low angle; run a sample trial for coated, cosmetic, or sensitive surfaces
Edge Lift During Curing or Reflow
- Cause: poor surface preparation, incorrect thickness choice, insufficient application pressure
- Prevention: clean and dry the surface thoroughly; select a suitable thickness; apply firm pressure to improve contact before heat exposure
Wrong Finish Selection
- Matte black is preferred where lower reflectivity matters.
- Gloss black is easier to see on busy masking lines but may reflect more.
For glare-sensitive or light-shielding builds, matte black should be validated in the real application.
Technical Specifications
| Item No. | K-650A-50 | K-650A-55 | K-650A-60 |
| Film thickness (mm) | 0.025 | 0.025 | 0.025 |
| Total thickness (mm) | 0.05 | 0.055 | 0.06 |
| Adhesion to steel (N/25mm) | 4.0 | 5.0 | 5.5 |
| Tensile strength (N/25mm) | 100 | 100 | 100 |
| Heat resistance (°C) | 260 | 260 | 260 |
| Elongation at break (%) | 45 | 45 | 45 |
Note: Heat resistance should always be evaluated against the actual process profile, including peak temperature, dwell time, substrate type, and removal conditions. Continuous exposure and short-term exposure should be assessed separately during qualification.
For qualification, please request the full TDS.
Matte Black vs Gloss Black vs Amber Polyimide Tape
| Option | Best For | Considerations |
| Matte Black | Low-glare masking, light shielding, inspection-sensitive assembly, sensor-adjacent builds | Lower reflectivity is the main value; sample validation is recommended for critical builds |
| Gloss Black | High visibility on masking lines, stronger visual contrast, premium black appearance | More reflective than matte black |
| Amber PI Tape | General high-temperature masking and electrical insulation | Lower visual contrast and less light-shielding value than black PI tape |
Thickness Selection
- 05mm:better conformability and precision masking
- 055–0.06mm:better handling and improved robustness
Converting & Customization
- Custom widths and custom lengths
- Rolls, sheets, log rolls, and jumbo rolls
- Die-cut dots, discs, strips, and custom shapes
- Optional liner formats for cleaner converting and application
- OEM / ODM support based on drawings or samples
Downloads
Available upon request:
Request a Quote:
FAQ
What is matte black polyimide tape used for?
What is the difference between matte black and gloss black polyimide tape?
Can matte black polyimide tape be used in reflow soldering?
Will it leave residue after high-temperature processing?
How do I choose thickness for precision masking vs handling robustness?
Can this tape be used for vacuum sealing?
Get a Technical Compatibility Review
Send your substrate, masking geometry, peak temperature, and dwell time. We can recommend a suitable matte black construction, provide technical documentation, and arrange samples for validation.
Ready to qualify Matte Black Polyimide Tape on your line?
Request a quote or samples with your required thickness, width, roll format, and operating temperature profile. Our team will recommend a suitable grade and converting option for your application.
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