PI high temperature tape, also known as polyimide tape, Kapton tape, or gold finger tape, is a specialized high-temperature resistant tape manufactured using polyimide film (PI film) as the backing material, coated with高性能 silicone pressure-sensitive adhesive.

 

Polyimide is recognized as one of the most comprehensive high-performance organic polymer materials available, offering exceptional electrical insulation, high and low temperature resistance, mechanical strength, and chemical stability. When fabricated into tape form, it retains all these superior properties while adding adhesion functionality, making it an ideal solution for electronics, lithium batteries, high-temperature painting, and related applications.

 

**Key Features**

 

| Feature | Description |

| **Excellent High Temperature Resistance** | Continuous operating range from -73℃ to +260℃; short-term resistance up to 280℃-350℃; no melting or deformation at high temperatures |

| **Superior Electrical Insulation** | H-class insulation material; voltage resistance up to 6kV+; high volume resistivity |

| **Chemical Resistance** | Resists acids, alkalis, solvents, and oils; stable performance in harsh chemical environments |

| **Clean Removal – No Residue** | The most critical advantage: leaves absolutely no adhesive residue on protected surfaces after high-temperature processing |

| **High Tensile Strength** | Excellent mechanical strength; resists tearing; ideal for precision die-cutting |

| **Flame Retardant & Eco-friendly** | UL94 V-0/VTM-0 rated; RoHS compliant; non-toxic, odorless |

| **Radiation Resistance** | Excellent radiation resistance; suitable for aerospace and specialized environments |

| **Ultra-thin Conformability** | Available as thin as 0.03mm-0.05mm; conforms tightly without occupying space |

 

**Product Structure & Material**

| Layer | Material | Description |

| **Backing** | Polyimide film | Amber/tea color; provides mechanical strength, insulation, and high-temperature foundation |

| **Adhesive** | Silicone pressure-sensitive adhesive | High-temperature resistant; leaves no residue after heat exposure |

| **Liner** (optional) | Fluorine release liner | For double-sided tape applications |

 

**Applications**

PI high temperature tape is widely used across multiple industries:

 

| Application Field | Specific Uses |

| **PCB/FPC Manufacturing** | Gold finger protection (wave/reflow soldering masking), circuit board impregnation masking, gold plating protection |

| **Lithium Battery Manufacturing** | Battery tab fixing, cell insulation edge wrapping, PACK assembly fixing |

| **Electronic Components** | Transformer coil insulation, motor winding fixing, capacitor insulation protection |

| **High Temperature Painting/Masking** | Powder coating masking for computer chassis/cabinets, automotive parts paint masking, high-temperature spray painting protection |

| **High-Temp Fixing/Temporary Bonding** | SMT reflow fixing, electronic switch protection, temporary positioning during high-temperature processes |

| **Aerospace** | Aircraft wire harnessing insulation, high-temperature environment fixing |

| **Die-cutting** | Precision die-cutting and custom shapes |

 

> The above applications focus on industrial and commercial uses. Medical applications are excluded.

 

**Key Advantages**

**1. Clean Removal – No Residue**

The most outstanding feature of PI high-temperature tape: **leaves absolutely no residue** after high-temperature use. Whether after reflow soldering or high-temperature baking, the tape removes cleanly without any adhesive residue. This unmatched performance is why PI tape is the industry standard for gold finger protection.

 

**2. Superior High Temperature Resistance – 260℃ Continuous**

PI tape provides **continuous operation at 260℃**, with short-term resistance up to 280℃-350℃. Whether for wave soldering, reflow soldering, or powder coating, it reliably protects masked areas.

 

**3. Ultra-thin Design – Space Saving**

Available as thin as 0.03mm-0.05mm, PI tape adds virtually no thickness to precision electronic components, preserving assembly space.

 

**4. Electrical Insulation – Safe & Reliable**

H-class insulation rating with 6kV+ voltage resistance. The ideal insulation material for motors, transformers, and coils.

 

**5. Excellent Die-cutting Performance**

Good flexibility and high tensile strength make PI tape suitable for precision die-cutting. Custom shapes available for specialized electronic component protection.

 

**Color & Specifications**

– **Standard Color**: Amber/tea (natural polyimide color)

– **Custom Color**: Black (surface coating), other colors available upon request

– **Thickness Range**: 0.03mm, 0.05mm, 0.06mm, 0.07mm, 0.08mm, 0.1mm, 0.15mm

– **Release Liner**: Fluorine release liner available for die-cutting

 

**Storage & Usage Recommendations**

1. **Storage**: Store in cool, dry environment; avoid direct sunlight, high temperature, and humidity
2. **Temperature**: Confirm actual operating temperature does not exceed tape rating
3. **Surface Preparation**: Ensure clean, dry, oil/dust-free surface before application
4. **Application Pressure**: Apply adequate pressure after placement to ensure proper adhesion

H-class insulation material