Polyimide double-sided tape

Double-sided polyimide tape is a high-temperature resistant tape made of polyimide film as the base material and coated with high-performance adhesive on both sides. It has excellent temperature resistance (typically -269℃ to 260℃), electrical insulation and chemical stability, and is suitable for scenarios such as fixing electronic components and shielding in high-temperature environments.

double-sided-polyimide-tape

Production Process Flow

From raw materials to finished product, every step is rigorously controlled to ensure consistent and reliable performance.

Select PI substrate (25-125μm), suitable adhesives (silicone/acrylic), and release materials. Test key indicators such as thickness, viscosity, and cleanliness, and reject substandard raw materials.

After dust removal and degreasing cleaning, improve adhesion through corona/plasma activation or primer treatment, then dry at 80-120℃ to remove moisture and residual solvents.
Mix resin, curing agent, and other components according to the formula, grind to a particle size ≤5μm, adjust viscosity to 1000-5000mPa・s, and degas under vacuum before use.
Apply two layers of adhesive in stages (thickness 10-50μm, tolerance ±2μm). After each coating, pre-cur at 60-150℃ in stages, compact with release material, and finally cure at 150-200℃ for 2-4 hours. Some adhesives require curing at 23±2℃ and 50±5% humidity for 24-72 hours.
Inspect the master roll and remove defective parts. Precisely slit to the specified width (tolerance ±0.1mm). Randomly inspect dimensions, peel strength, high-temperature resistance, and other indicators.
Use moisture-proof and dust-proof packaging (partial vacuum packaging) and store in an environment of 15-30℃ and humidity ≤60%

Polyimide double-sided tape Series Specification Sheet

Name Item No.Model Material Colour Adhesive standard size Adhesion (N/25mm) Tensile strength (N/25mm) Temperature resistance °C
thick/mm long/m
Polyimide double-sided tape DS10K PI Golden Silicone / / 3.5↑ 170↑ 250

Application Showdown: Double-Sided Polyimagevs. Single-Sided Polyimide Tape

Double-Sided Polyimide Tape

  • Primary Use: Permanent Bonding

  • Strong Adhesion: Aggressive silicone adhesive on botrter onboth sides for reliable, high-temp bonds

  • Heat Resistant: Withwtands 260°C+ for mountingmounting in hgh-temp environments

  • Heat Resistant: eomprorments

  • Thin & Conformable: Ideal secure secure mounting attachent ofcomponornents or PBB flex circuits

Single-Sided Insulation & Masking

  • Non-Bonding Backing: Only on stion & Masking

  • Non-Bonding Backing: Adhesive adhesive side; in oher other slick, polyimive film

  • Heat Resistant: Also withhands 260℃ for electrical insulation and polyimide film

  • Heat Resistant: Also thin secure pantim asking ducking and Solder Masking

  • Removable: Often used temporary lbaind mappioç or, inñuíufacturing, peels cleanly

Functions, Uses, and Applications

Black Polyimide Tapes is an indispensable material in electronic manufacturing. Its core function is to ensure reliability and performance of electronic components via excellent thermal resistance, insulation, and adhesion throughout complex production workflows.

High-Temp Resistance

Long-term operating temperature ranges 200-300℃, withstanding high-temperature processes like reflow soldering and wave soldering, retaining adhesive strength and substrate integrity even after exposure to high temperatures.

Stable and Reliable Adhesion

Double-sided high-performance adhesive forms firm bonds with diverse substrates (metals, plastics, ceramics), boasting high 180° peel strength and slow adhesion decay under repeated high-low temperature cycling.

Strong Environmental Resistance

Exhibits excellent resistance to acid, alkali, organic solvents, aging, and UV radiation; rarely suffers adhesive layer cracking or substrate deterioration in complex service environments.

Excellent Dimensional & Mechanical Properties

PI substrate boasts tensile/tear resistance and low dimensional shrinkage, reducing deformation in slitting/use and ideal for precision component requirements.

Insulation & Cleanliness Compatibility

High dielectric strength & excellent insulation, complies with production cleanliness standards, impurity/bubble-free surface, supports thickness/adhesion parameter customization.

Primary Application Fields

  • Electronics & Electrical: Reinforcement, interlayer positioning, and insulation protection in FPC/PCB manufacturing; semiconductor wafer dicing and chip packaging; lithium battery tab fixing and cell insulation to resist electrolyte corrosion.
  • Aerospace: Internal fixing and insulation of airborne radar and navigation equipment, adapting to extreme high-altitude temperature, humidity, and vibration; spacecraft electronic module packaging, wire harness fixing, and thermal insulation layer bonding, withstanding the vacuum and ultraviolet environment of space.
  • Automotive Electronics: Bonding and insulation of motor controllers and BMS components in new energy vehicles, withstanding high temperatures and driving vibrations; precision fixing of in-vehicle displays and autonomous driving components, extending equipment lifespan.
  • Industrial Manufacturing: Component bonding in medical high-temperature sterilization equipment (meeting hygiene requirements); high-temperature masking for metal spraying/electroplating (no residue after peeling); interlayer fixing in composite material molding, withstanding high curing temperatures.
  • Special Applications: High-temperature wire harness fixing around industrial kilns; high-temperature bonding of electronic tags; and assembly of special military electronic equipment.

​Lens Protection Tape Series​
Specialized for encapsulating ​resin eyeglass lenses​ during high-temperature curing processes. Key features include ​high transparency, ​residue-free removal, and heat resistance up to 130°C (e.g., JT8860 for blue-light-blocking lenses)

​Lithium Battery Tape Series​
Includes ​termination tapes​ (for electrode insulation), ​PACK tapes​ (bundle fixation), and ​tab lead tapes​ (welding point protection). Made from ​PI/PET films​ with electrolytic corrosion resistance, critical for cylindrical/pouch cell safety

​LED Encapsulation High-Temperature Tape Series​
Designed for ​LED epoxy resin filling and curing​ (e.g., MY68C transparent tape for digital tubes). Withstands 150–180°C, prevents overflow, and leaves no residue after peeling

​Connector Tapes Series​
Insulating tapes for ​electronic connectors and terminals, ensuring stability in soldering (reflow peak: 260–300°C). Commonly uses PI films for dielectric strength

​Insulation & Fixation Tapes Series​
​Glass fiber-reinforced tapes​ for coil binding in motors/transformers, offering mechanical strength and flame retardancy (180–220°C continuous use)

​High-Temperature Double-Sided Tape Series​
Features ​acrylic/silicone adhesives​ on PI/PET bases. Used for bonding heat sinks, battery modules, and composite materials, withstanding 120–180°C long-term

​Masking Tapes Series​
Includes ​high-temp masking paper​ and ​PET green tapes​ for spray painting, powder coating, and PCB gold finger protection. Resists solvents, leaves sharp edges, and operates at 150–230°C

​Teflon Tape Series​
​PTFE-based tapes​ with ultra-low friction and 260–300°C continuous resistance. Applied in non-stick industrial conveyors, food packaging seals, and chemical equipment lining

Yes, we can develop tailored solutions based on your sketches or ideas to address your business challenges.

The Company serves all customer segments, offering tailored solutions for ​large enterprises, small businesses, and individual users.

Double-sided polyimide tape is a high-temperature resistant tape made of polyimide film as the base material and coated with high-performance adhesive on both sides. It has excellent temperature resistance (typically -269℃ to 260℃), electrical insulation and chemical stability, and is suitable for scenarios such as fixing electronic components and shielding in high-temperature environments.

The core characteristics of double-sided polyimide tape revolve around “high temperature resistance, strong adhesion, and high stability,” as follows:

1. Extreme Temperature Resistance: Long-term operating temperature range is -269℃ to 260℃, able to withstand the thermal stress of industrial processes such as high-temperature welding and reflow soldering, and can withstand even higher temperature shocks for short periods.

2. Uniform and Strong Adhesion on Both Sides: The silicone or acrylic adhesive coating on both sides provides stable and uniform adhesion, allowing for tight bonding to precision parts and irregular surfaces, preventing edge lifting or detachment after bonding.

3. Excellent Overall Stability: Strong electrical insulation and high dielectric strength, suitable for insulation requirements in the electronics field.

Resistant to chemical corrosion, able to withstand harsh environments such as acids, alkalis, and solvents without degradation.

Excellent mechanical strength; the substrate is not easily torn or deformed, suitable for complex working conditions.

4. Easy Cleaning and Removal: Almost no adhesive residue remains after removal, preventing contamination of bonded parts and reducing subsequent cleaning processes.

The commonly used materials for double-sided polyimide tapes are mainly divided into two categories: substrate and adhesive. The choice of core material directly determines its performance:

1. Core Substrate: Polyimide (PI) Film Commonly known as Kapton®, it forms the basic framework of the tape, possessing extreme temperature resistance (-269℃ to 260℃), high electrical insulation, and excellent mechanical strength.

Film thickness is typically 25μm, 50μm, etc., selectable according to bonding strength and insulation requirements. It is lightweight and not easily deformed.

2. Commonly Used Adhesives

Silicone-based adhesives: Offer stronger temperature resistance (compatible with the entire temperature range of the substrate), gentle adhesion, and aging resistance. Leaves no residue after removal, making them the mainstream choice in the electronics industry.

Acrylic-based adhesives: Provide higher bonding strength, are relatively affordable, and have a slightly narrower temperature range (typically -40℃ to 180℃), suitable for industrial applications requiring high adhesion.

Double-sided polyimide tape is primarily used in high-temperature, precision, and high-reliability applications, mainly in electronics manufacturing, high-end industry, and industrial connections:

1. Electronics Manufacturing (Core Applications)

PCB Board Processing: Fixing electronic components; shielding and protecting precision parts during high-temperature soldering/reflow soldering to prevent solder contamination.

Chip and Semiconductor: Bonding and fixing during chip packaging; temporary fixing during wafer dicing; withstands high process temperatures.

Electronic Components: LED chip bonding; battery tab fixing; sensor assembly; provides both bonding and insulation.

2. High-End Industrial Applications

Aerospace: Bonding components for airborne electronic equipment; insulating and sealing high-temperature areas around engines; adaptable to extreme temperature variations.

Automotive Electronics: Fixing battery pack components in new energy vehicles; bonding electronic components in engine compartments; withstands high temperatures and vibration.

Medical Equipment: Fixing components in high-temperature sterilization environments (e.g., internal components of medical instruments); meets biocompatibility requirements.

3. Industrial Connection Applications
Suitable for connecting/splicing materials such as films, fabrics, and metal foils under high-temperature conditions, such as lithium battery electrode connections and temporary bonding and fixing in high-temperature film production lines.

During the connection process, it can withstand the high-temperature environment of subsequent processing while maintaining adhesive strength, without affecting the continuous production of materials.

4. Other Special Scenarios
Industrial Coating: Local masking in high-temperature spraying and powder coating processes; removal leaves no residue and does not affect the coating effect.

Precision Instruments: Bonding and insulation of internal components in optical instruments and electronic meters; space-saving and stable.

Our company mainly provides the DS10K model of double-sided polyimide tape, with a thickness of up to 0.1mm. It uses a silicone system and can be used without residue in a high-temperature environment of 260 degrees Celsius for 0.5 hours.

Quality Standards & Certifications

Jiujiang Leadcomp Co., Ltd. is committed to delivering the highest quality products, a promise backed by strict internal standards and authoritative third-party certifications.

Appearance Standard

Tape surface is smooth and free of defects like bubbles, scratches, or impurities. Edges are clean with no adhesive bleed.

Performance Consistency

Each batch is tested for key performance indicators like peel strength to ensure stable and reliable performance.

Dimensional Tolerance

Strict control over width and thickness tolerances ensures high consistency for automated production lines.

Third-Party Inspection & Certification

ISO 9001:2015

Quality Management System certification, demonstrating our ability to consistently produce high-quality products.

RoHS Directive

Products are free of hazardous substances, complying with EU environmental standards for user and environmental safety.

REACH Regulation

Compliant with EU chemical regulations, ensuring a high level of protection for human health and the environment.