Polyimide Tape with Liner
Polyimide tape with liner is a high-performance tape that uses a polyimide film as the base material, coated with a high-temperature resistant adhesive, and covered with a padding layer on the adhesive surface.
- High Temperature Resistance: Withstands 260°C continuously and 300°C short-term. No residue or deformation during reflow/wave soldering. Liner protects adhesive from contamination and aging.
- Strong Electrical Insulation: Dielectric strength ≥6kV prevents breakdowns and short circuits. Liner keeps adhesive clean, ensuring reliable insulation.
- Good Chemical Stability: Resists solvents, fluxes, and oils without degradation. Liner shields adhesive from premature chemical reactions.
- Excellent Dimensional Stability: Minimizes shrinkage and curling for precise placement. Liner maintains tape flatness and original dimensions.
Product Selling Points
- Excellent high-temperature reliability: Ensures stable performance in extreme high-temperature environments (such as reflow soldering), protecting your critical components and preventing production accidents or product defects caused by tape failure.
- Long-term stable electrical performance: Provides high dielectric strength, effectively isolating circuits and significantly reducing the risk of short circuits and electrical breakdown, ensuring the long-term safe and reliable operation of your electronic devices.
- Superior chemical resistance: Maintains performance without degradation in harsh chemical environments (such as contact with solvents and fluxes), reducing maintenance and replacement costs due to chemical corrosion.
- Precise process control: Excellent dimensional stability prevents shifting, shrinking, or curling during long-term use, helping to improve production efficiency and reduce material waste and rework.
- Clean and efficient operation: The liner design ensures that the adhesive surface remains clean before use, is easy to peel and precisely apply, simplifying the operation process
Polyimide Tape (With/Without Release Paper) Selection and Application Comparison Table
| Comparison Dimension | Polyimide Tape With Release Paper | Polyimide Tape Without Release Paper (Roll Form) |
|---|---|---|
| Structure | Polyimide film + Silicone or Acrylic adhesive + Release paper/film | Polyimide film + Silicone or Acrylic adhesive |
| Form | Sheet-like; can be die-cut into any shape as needed | Roll form; continuous long strip |
| Key Advantages |
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| Key Disadvantages |
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| Core Application Scenarios | Complex component manufacturing and precision applications: – PCB gold finger protection – Transformer and motor coil insulation – Lithium battery tab fixation – Insulation and fixation of internal structural parts of 3C products |
Temporary masking and protection: – Painting and powder coating masking – Electroplating and electrophoresis masking – High-temperature baking paint masking – Sandblasting and shot peening protection – Daily high-temperature insulation maintenance |
| Usage Method | Usually die-cut by machine, then attached manually or by automatic equipment | Torn by hand or cut with scissors; then directly attached |
| Automation Compatibility | High, very suitable for automatic production lines | Low, mainly relying on manual operation |
| Typical Products | Various-shaped “tape patches” after die-cutting and stamping | Rolled tape, similar to ordinary transparent tape |
Polyimide Tape (With/Without Release Paper) Selection and Application Comparison Table
Specifications diagram for padded polyimide tape
| Item | Unit | DS10K2 | KA05F15 | KA08F7 | KA06D25 | Test Method |
|---|---|---|---|---|---|---|
| Dimension & Tolerances | ||||||
| 1. Color | Amber | Amber | Amber | Amber | ||
| 2. Thickness | mm | 0.100±0.005 | 0.050±0.005 | 0.090±0.005 | 0.065±0.005 | GB/T 7125-1999 |
| 3. Inside Diameter of Roll | mm | 77±1 | 77±1 | 77±1 | 77±0.1 | |
| 4. Length | m | 100 | 100 | 100 | Customized | |
| Composition | ||||||
| 1. Backing | PI | PI | PI | PI | ||
| 2. Backing Thickness | mm | 0.025 | 0.025 | 0.050 | 0.05 | GB/T 7125-1999 |
| 3. Adhesive | Silicone | Silicone | Silicone | Acrylic | ||
| 4. Fluorine Coating | mm | 0.075 | – | – | – | |
| Physical & Chemical Properties | ||||||
| 1. Tack | N/24mm | ≥15 | ≥1 (N/24mm) | ≥1 (N/24mm) | – | GB/T 4852 / GB/T 31125-2014 |
| 2. 180° Adhesion | gf/25mm / N/25mm | 600-900/700-1000 (gf/25mm) | ≥5 (N/25mm) | ≥3 (N/25mm) | 2.0-6.0 (N/25mm) | GB/T 2792(-1998) |
| 3. Holding Power | mm / hr | ≤0.1 (mm) | ≥12 (hr) | ≥4 (hr) | – | GB/T 4851(-1998) |
| 4. Temperature Resistance | 260℃/0.5H, no residue | 260℃/0.5H, no residue | 260℃/0.5H, no residue | 200℃/30mins, no residue | ||
| 5. Tensile Strength | 25mm/mpa / Mpa | ≥75/85 (25mm/mpa) | ≥70 (Mpa) | ≥70 (Mpa) | – | GB/T 30776 / GB/T 7753-87 |
| 6. Elongation | % | – | ≥35 | ≥30 | – | GB/T 7753-87 |
Specifications diagram for padded polyimide tape
Customizable styles
1. Polyimide CIRCLES
Primarily used for localized masking and protection in electronic manufacturing, such as:
- precise masking during PCB wave soldering and gold finger spraying (to prevent solder joints/gold fingers from being contaminated);
- protection of specific areas in high-temperature spraying processes (high temperature resistance, easy peeling, and no residue).
2. Polyimide rectangular
It belongs to the category of die-cut custom shapes and is commonly used for:
- fixing and insulating the positive/negative tabs of lithium batteries;
- component masking in SMT (Surface Mount Technology) processes;
- partial insulation wrapping of motor and transformer coils.
3. Polyimide Rolls
Supplied in roll form, suitable for large-area/continuous processing scenarios:
- Coil insulation wrapping for motors and transformers (resistant to high and low temperatures, high insulation level);
- Substrate for flexible printed circuits (FPC);
- High-temperature insulating sleeves for cables.
4. Polyimide Sheets
Suitable for large-area/custom-size insulation/substrate needs:
- Encapsulation substrates for high-temperature heating films (such as heating elements in aerospace/medical equipment);
- Sample support films for X-ray fluorescence spectroscopy (XRF) analysis;
- Structural support and overall protection of gold fingers for flexible circuit boards.
Industries We Serve
Widely used in electronics, automotive, construction, home appliances, packaging, and furniture manufacturing, ensuring strong bonding and reliable performance across industries.
Our Production Equipment
Jiujiang Leadcomp Co., Ltd. has many years of experience in the manufacturing of high-temperature tapes. Our factory is equipped with advanced slitting, die-cutting, and coating equipment, enabling large-scale, precise, and high-quality production. Each roll of tape undergoes rigorous quality control to ensure its reliability and consistency in industrial applications.
Customer Success Stories
Jiujiang Leadcomp Co., Ltd. provides high-quality ODM and OEM tape solutions for numerous industries, customizing die-cut tape products to meet each customer’s unique needs. With years of experience in precision die-cutting, we pride ourselves on advanced processes and attention to detail. The following showcases our superior die-cutting technology and samples, reflecting our relentless pursuit of quality and precision.
Our Certificates
