Double-Sided Polyimide Tape | Interlayer High-Temp Insulation & Structural Bonding - STK
STK supplies Premium Double-Sided Polyimide Tape, the definitive engineering choice for high-precision interlayer high-temp insulation and rugged structural multi-layer lamination. Featuring an ultra-thin, dimensionally stable polyimide film carrier coated on both sides with an advanced, cross-linked formulation of high-tack silicone adhesive, this tape delivers an unyielding mechanical bond under severe thermal and electrical stress. It is designed to achieve synchronous structural adhesion between high-temperature metallic, ceramic, and composite surfaces without degrading or outgassing.
The definitive physical advantage of this double-coated polyimide architecture is its elite thin-film thermal attachment capability. It overcomes the geometric bulk limitations of traditional mechanical fasteners, allowing designers to package high-voltage dielectric isolation and continuous +260°C (500°F) thermal resistance into micro-clearance internal electronics bays, electric vehicle (EV) battery cell configurations, and semiconductor substrate carriers.
Request a Double-Sided Polyimide Sample Roll
For aerospace electronics developers, flexible printed circuit (FPC) manufacturers, and automotive battery pack designers, STK's Double-Sided Polyimide Tape provides a zero-compromise joint profile that maintains absolute geometric and electrical placement:
Dual-Side High-Heat Grip
Coated on both sides with premium, heavy-mass silicone adhesive resin. It provides synchronized, aggressive structural hold between two mismatched hot metal plates, heater foils, or ceramic thermal sinks, completely optimizing interfacial thermal contact wet-out.
Ultra-Thin Interlayer Insulation
The micro-thin polyimide carrier delivers exceptional dielectric isolation and high voltage breakdown resistance. It stops electrical shorting and micro-arcing completely without causing dimensional stack-up bulk or adding unnecessary weight to aerospace wire harnesses.
High Shear Heat Resistance
Fiercely resists parallel shifting, edge-lifting, and thermal warping. The cross-linked silicone adhesive matrix exhibits zero structural creep when subjected to continuous +260°C (500°F) thermal baking environments and extreme pneumatic lamination pressures.
Technical Specifications
| Item | Specification A | Specification B | Specification C | Specification D |
|---|---|---|---|---|
| Product Description | Double-Sided Polyimide Tape | Double-Sided Polyimide Tape | Double-Sided Polyimide Tape | Double-Sided Polyimide Tape |
| Film Thickness (mm) | 0.025 | 0.025 | 0.05 | 0.075 |
| Total Thickness (mm) | 0.05 | 0.09 | 0.125 | 0.175 |
| Adhesive System | Silicone Adhesive | Silicone Adhesive | Silicone Adhesive | Silicone Adhesive |
| Carrier Material | Polyimide Film | Polyimide Film | Polyimide Film | Polyimide Film |
| Color | Amber | Amber | Amber | Amber |
| Release Liner | Fluoro Silicone Film | Fluoro Silicone Film | Fluoro Silicone Film | Fluoro Silicone Film |
| Front Side Adhesion to Steel (N/25mm) | 7 | 8 | 8 | 8 |
| Back Side Adhesion to Steel (N/25mm) | 6 | 7 | 7 | 7 |
| Elongation at Break (%) | 35% – 50% | 35% – 50% | 35% – 50% | 35% – 50% |
| Dielectric Strength (kV) | 3.5 – 4 | 3.5 – 4 | 5 – 8 | 5 – 8 |
| Intermittent Temperature Resistance (°C) | 300 | 300 | 300 | 300 |
| Continuous Operating Temperature (°C) | 260 | 260 | 260 | 260 |
Primary Commercial Application Fields
High-volume automated production lines and specialty die-cutting systems cannot operate efficiently with generic material formats. STK enhances procurement efficiency by offering engineered release liner and conversion solutions:
Heater Element Mounting: Permanently laminating thin polyimide or etched-foil heating elements onto raw aluminum plates, composite panels, and surgical medical diagnostic instruments requiring continuous, uniform heat transfer.
Flexible Printed Circuit (FPC) Splicing: Securing and stabilizing multi-layer FPC boards onto rigid support fixtures, or forming high-strength web splices on gold-plated circuit rolls entering high-heat automated reflow lines.
Semiconductor Wafer Processing & Insulation: Acting as an ultra-thin, residue-free interlayer insulation shield and holding tape on specialized vacuum chucks during high-heat silicon wafer etching, dicing, and testing cycles.
Electric Vehicle (EV) Battery Cell Barriers: Providing thin-film, dual-coated electrical insulation and flame-retardant structural attachment between adjacent lithium-ion pouch cells and aluminum cooling jackets.
STK Custom Supply Superpower: Dual-Liner Die-Cutting & Zero-Creep Slitting
Fusing silicone adhesive on both sides of a delicate polyimide film means the tape can easily wrinkle, block, or bleed if processed on inaccurate converting hardware. STK guarantees flawless drop-in factory deployment:
Dual-PET Film Liner Calibration: To ensure complete dimensional stability during high-speed punch stamping, STK configures this double-sided tape with dual fluorosilicone-treated PET release films (e.g., differential release setup). This allows your automated robotic pick-and-place pickers to pull off the first liner cleanly, position the part, and remove the second liner with zero tape distortion.
Micro-Precision Die-Cut Thermal Gaskets: Utilizing our advanced flatbed die-cutters, STK converts raw master logs into highly intricate interlayer insulation gaskets, pre-cut heating foil borders, and custom mounting tabs delivered with extended liner pull-tabs (引手) to optimize manual line speeds.
Millimeter-Level Narrow Ribbon Slitting: We custom-slit double-coated polyimide logs into extremely narrow custom widths down to 3mm with razor-sharp roll walls, ensuring the silicone edges remain completely clean and dust-free to eliminate dispenser line jams.
Equipment
Why Choose Our Double Sided Polyimide Tape?
We supply high-quality double-sided polyimide tapes that meet rigorous industry standards. Our products ensure consistent performance, reliability, and durability, solving complex bonding challenges in electronics, aerospace, and automotive applications.
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