Description
Our double-sided Kapton tape is built from a thin, premium polyimide film coated on both sides with silicone pressure-sensitive adhesive and supplied with a single or double-sided fluorinated PET release liner. The film offers industry-leading thermal stability, low thermal expansion, outstanding dielectric strength and excellent chemical resistance; the silicone adhesive provides reliable adhesion across a very wide temperature range while usually removing cleanly without sticky residue. Typical tape thickness (excluding release liner) ranges from ~0.10 mm to 0.20 mm depending on film gauge and adhesive build.
Construction: silicone PSA / polyimide film / silicone PSA, supplied with fluorinated PET release liner(s)
Custom widths (3–500 mm) and die-cut parts are available. Samples can be provided upon request for process validation.
Datasheet:
| Item NO. | Tape Thickness (MM) | Liner Thickness (MM) |
Total Thickness (MM) |
Adhesion to steel
(N/25mm) |
Tensile Strength
(kg/25mm) |
Heat Resistance
(℃) |
Elongation at Break(%) | Voltage Resistance (KV) |
| J630C-10 | 0.025 | 0.05 | 0.10 | 5.0 | 10 | 260 | 45 | 5 |
| J630C-15 | 0.05 | 0.05 | 0.15 | 5.5 | 20 | 260 | 50 | 7 |
| J630C-20 | 0.075 | 0.05 | 0.20 | 5.5 | 20 | 260 | 55 | 9 |
Note: Tape thickness values are excluding release liner unless otherwise specified.
Test Methods (Reference): Peel adhesion per ASTM D3330; dielectric breakdown per ASTM D149 (reports available upon request). Typical values may vary with substrate and process conditions.
Features
- High temperature resistance: Polyimide film offers excellent thermal stability. Actual service temperature is typically limited by the silicone adhesive system; many grades are rated up to 260 °C, with short-term peaks possible depending on adhesive formulation and dwell time. Please refer to the specific SKU datasheet and validate under your process profile.
- Excellent electrical insulation: polyimide backing provides high dielectric strength and stable electrical properties under thermal cycling.
- Silicone adhesive — heat & solvent resistant: silicone-based PSAs keep adhesion at high temperatures and usually remove cleanly without adhesive residue on smooth surfaces.
- Mechanical durability: strong tensile strength, tear resistance and dimensional stability for masking and protection applications.
- Chemical and radiation resistance: stable vs. many solvents, acids/alkalis and radiation environments — suitable for aerospace and harsh-process uses.
- Custom widths & formats: commonly supplied in widths from a few mm up to 500 mm, in rolls or die-cut parts; total thickness and liner options are customizable to suit assembly tooling and die-cutting. (Samples and custom tooling offered.)
- Clean peel / no tin penetration in soldering: engineered for wave/reflow masking and protection without contamination of plated surfaces when removed per process guidelines.
- Stable liner release for converting: Supplied with fluorinated PET release liner(s) designed for consistent release force, helping reduce adhesive transfer during high-speed die-cutting, slitting, and manual assembly.
Applications
- High-Temperature Masking & Coating
Ideal for PCB wave solder masking, protecting gold fingers, and preventing tin penetration.
Suitable for powder coating, high-temperature spray paint, sandblasting, and thermal curing processes.
Performs reliably in short-term peaks up to ~300 °C and long-term ~260 °C (grade-dependent).
- Electrical & Electronic Insulation
Used in motors, transformers, coils, capacitors, and variable frequency power supplies for insulation and component fixation.
Strong adhesion and excellent dielectric properties prevent short circuits and maintain electrical isolation.
Dual-sided adhesive allows secure attachment of wires and components in compact electronic assemblies.
- Flexible Circuit Board (FPCB) & SMT Manufacturing
Bonding layers in flexible circuits and protecting components during reflow soldering.
Ensures dimensional stability and adhesion during high-temperature soldering processes.
Supports surface mounting (SMT) operations and protects sensitive components on printed circuit boards.
- 3D Printing & Thermal Transfer Applications
Provides high-temperature protection and precise adhesion for 3D printer beds and molds.
Useful in thermal transfer printing, heat presses, and other processes requiring repeated thermal cycling.
- Lithium Battery Assembly & Cable Bonding
Fixing anode/cathode components and insulating connections during lithium battery manufacturing.
Secures cables and wire harnesses in electronics and automotive applications.
- Aerospace, Automotive & Industrial Applications
Bonds, insulates, and protects components under harsh environmental conditions.
Used in aircraft, spacecraft, automotive electronics, and high-performance industrial systems where thermal, chemical, and mechanical resistance are critical.
- Die-Cutting, Optical, & Precision Industrial Applications
Ideal for wafer dicing, optic cable insulation, and component masking during precision manufacturing.
FAQS
Q1: What maximum temperature can double-sided Kapton tape tolerate?
A: Typically up to 260 °C for continuous use, with short-term peaks possible depending on adhesive grade and dwell time. Always confirm the specific SKU and validate under your process conditions.
Q2: Will the tape leave adhesive residue or damage the substrate?
A: Silicone adhesives are designed for clean removal with minimal residue on smooth, clean surfaces when removed within the recommended temperature/time window. Performance depends on substrate, temperature, and peel conditions — testing with samples is recommended.
Q3: Can Kapton tape be used in chemically aggressive environments?
A: Standard Kapton tape resists many solvents and chemicals, but strong acids, bases, or battery electrolytes may affect adhesives/liners. Specify chemical exposure and request grade verification or testing.
Q4: What sizes and formats are available?
A: Available in widths from a few mm up to 500 mm, standard roll length ~33 m, and tape thicknesses from 0.10 mm to 0.20 mm (excluding liner).
Q5: Can I request samples or small trial quantities before bulk orders?
A: Yes. Samples and small trial quantities are available for evaluation and process validation. Sample availability, format, and shipping terms depend on the requested specification and destination — please contact us with your application details.