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Which Industries Require Adhesive PET Material High Temperature Tape for Critical Operations? |https://www.lvmeikapton.com/

Source: | Author:Koko Chan | Published time: 2025-07-22 | 13 Views | Share:


1. Introduction to Key Features of High-Temperature PET Tape
1.1 Temperature Resistance CharacteristicsHigh-temperature PET tape is widely used in industries that require stable performance in high-temperature environments. It can withstand temperatures up to 180°C without degradation, making it essential for operations in automotive, electronics, and chemical industries. For example, in automotive engine compartments, it fixes and insulates components exposed to engine heat. In electronics manufacturing, it protects electronic components during processes like wave soldering and reflow soldering. In chemical reactors, it ensures seals and fixations remain intact under high process temperatures, preventing leaks and failures.
Insert Table: Comparison of Temperature Resistance of PET vs. PI Tape
Material
Max Temperature
Typical Applications
PET Tape
180°C
Automotive, EV battery, electronics
PI Tape
300°C
Aerospace, nuclear equipment, 3D printing
1.2 Insulation Performance AdvantagesThe tape’s excellent insulation properties prevent electrical short circuits in dense circuits. In the electronics industry, it separates conductive layers in PCBs, ensuring signal integrity. In power cables, it acts as a barrier against high voltages, reducing energy loss. Unlike conventional materials that degrade at high temperatures, PET tape maintains its insulation capacity even in prolonged heat exposure, crucial for applications like motor winding insulation in home appliances or transformer coil protection.
1.3 Mechanical Strength PerformanceHigh-temperature PET tape offers robust mechanical strength, resisting tearing and deformation. During battery cell winding in EV manufacturing, its strength ensures precise alignment of electrode layers. In transportation of fragile electronics, it secures components against vibrations. Its flexibility allows conformal application to curved surfaces, such as HVAC pipes in buildings, maintaining seals under thermal expansion and contraction.
2. Requirements in the Electric Vehicle Battery Manufacturing Industry
2.1 Battery Cell Insulation ApplicationsPET tape is a critical insulator in EV battery packs. It separates cells to prevent electrical shorts, particularly during charging when voltages surge. Its resistance to thermal runaway—common in lithium-ion batteries—slows down heat propagation between cells. For cylindrical cells, it wraps individual units to isolate positive/negative terminals. In pouch cells, it reinforces edges to prevent electrode exposure, reducing fire risks.
Insert Image: Cross-section of battery pack with PET tape insulation layers.
2.2 Battery Module EncapsulationDuring module assembly, PET tape bonds cells into cohesive units. It provides structural integrity, preventing cell displacement in vehicles subject to shocks or vibrations. Additionally, it seals module edges to block moisture ingress, extending battery lifespan. Some tapes feature pressure-sensitive adhesives that bond instantly, improving production efficiency.
2.3 Enhancing Battery Safety and ReliabilityBy combining insulation, fixation, and sealing, PET tape enhances battery safety. It withstands thermal cycling (-20°C to 150°C) without delamination, ensuring long-term performance. In case of thermal incidents, its flame retardancy slows down fire spread, buying time for safety systems to activate. This reliability is vital for meeting stringent EV battery safety standards.
3. Requirements in the Flexible Circuit Industry
3.1 Circuit Board Processing FunctionsFlexible circuits (FPCs) rely on PET tape for processing stability. During cutting, drilling, or routing, tape fixation prevents substrate movement, avoiding defects like misaligned traces. In surface mount technology (SMT), it temporarily holds components during pick-and-place, ensuring accurate placement before soldering.
3.2 Dimensional Stability in Reflow SolderingReflow soldering temperatures reach 260°C, yet PET tape maintains flatness. This stability prevents FPC warping, which could cause component misalignment or solder joint failures. Some tapes have low shrinkage rates (<1%) at high temperatures, ideal for fine-pitch applications like wearable electronics.
3.3 Impact on Flexible Circuit PerformancePET tape’s electrical properties directly affect FPC reliability. Its low dielectric constant (≈3.2) reduces signal attenuation in high-frequency circuits. Furthermore, its moisture resistance (0.3% hygroscopicity) prevents conductive paths forming between layers in humid environments, crucial for outdoor IoT devices or medical wearables.
4. Requirements in the Medical Sterilization Industry
4.1 Compatibility with High-Pressure Steam SterilizationMedical-grade PET tape withstands autoclaving conditions (121°C, 103.4 kPa) without adhesive migration or tape degradation. This makes it suitable for sterilizing reusable devices like surgical instruments or catheters. After sterilization, tape integrity ensures packages remain sealed until use, maintaining sterility.
4.2 Medical Device Packaging and FixationTape securely fixes delicate components (e.g., sensors, tubing) within packaging trays. Its transparency allows visual inspections without removing tape, saving time in quality control. For devices with sharp edges (e.g., scalpels), PET tape cushions against abrasion, protecting both the device and packaging materials.
4.3 Ensuring Device Safety and EffectivenessBy preventing contamination during storage and transport, PET tape plays a role in patient safety. For example, in electrosurgical tools, tape insulates connections from moisture, reducing electrocution risks. Its tear resistance ensures packages remain intact through hospital logistics, avoiding device damage that could lead to treatment delays.
5. Applications of Brown High-Temperature Tape in Circuit Board Protection
5.1 UV Protection MechanismBrown PET tape incorporates UV absorbers that convert harmful UV radiation into heat. This protects PCBs from UV-induced degradation of solder masks or component coatings. In outdoor LED displays or solar inverters exposed to sunlight, it extends equipment lifespan by preventing UV-induced cracking or discoloration.
5.2 Applications in Solar Inverter PCBsIn solar inverters, brown tape shields PCBs from UV exposure during outdoor installation. It also acts as a thermal buffer, reducing temperature fluctuations on the board. Its adhesive layer bonds heatsinks to components, improving thermal dissipation—a critical factor in high-power electronics.
5.3 Comparison with Transparent Tape for UV ProtectionWhile transparent PET tape offers visibility advantages, it lacks UV absorbers. Over time, unprotected transparent tape yellows and loses adhesion under UV exposure. Brown tape, with its inherent UV resistance, provides long-term protection without sacrificing reliability, making it preferable for outdoor electronics.
6. Applications of PI Material High-Temperature Tape in Extreme Environments
6.1 Comparison with PET Tape PerformancePI tape outperforms PET in extreme conditions:
● 
Temperature: 300°C vs. 180°C
● 
Chemical Resistance: Resistant to strong acids/bases vs. moderate resistance
● 
Flexibility: Highly flexible at cryogenic temperatures vs. limited flexibility below 0°C
● 
Cost: ≈2.8x higher than PET tapeThis trade-off makes PI suitable for aerospace wiring (resisting jet fuel exposure) and nuclear reactor cabling (withstanding radiation).
6.2 Applications in Nuclear Energy EquipmentPI tape insulates nuclear reactor control cables, enduring temperatures up to 250°C and gamma radiation. Its non-flammability and low outgassing properties prevent fire hazards in enclosed reactor compartments. For maintenance, its easy removal leaves no residue on critical components.
6.3 Other Extreme Environment Applications
● 
Deep Sea Exploration: Sealing underwater connectors in submersibles (resisting saltwater corrosion)
● 
Aerospace: Protecting satellite circuitry from thermal cycling in space
● 
Oil Drilling: Insulating high-temperature wellhead equipmentThese applications demand materials that surpass PET’s capabilities, justifying PI tape’s higher cost.
7. Impact of Technical Parameters of High-Temperature PET Tape on Electronics Industry
7.1 Dielectric Constant ImpactPET tape’s dielectric constant (≈3.2) enables high-frequency signal transmission in 5G devices or radar systems. Lower constants reduce capacitance between conductive layers, minimizing signal delay and distortion. This property makes it ideal for antenna substrates or microwave circuit boards.
7.2 Hygroscopicity ImpactIn tropical regions, PET tape’s 0.3% hygroscopicity may increase impedance if not protected. Designers use conformal coatings over tape-wrapped components to seal against moisture. Alternatively, selecting tape with lower hygroscopicity (e.g., PI tape) may be necessary for humid environments.
7.3 Comparison with Other Insulation Materials
Material
Temperature Range
Dielectric Constant
Cost
PET Tape
-20°C to 180°C
3.2
Low
PI Tape
-70°C to 300°C
3.5
High
Mica Tape
Up to 1000°C
5.5
Medium
PET tape’s balance of cost and performance makes it prevalent in consumer electronics, while PI and mica tapes dominate aerospace and high-voltage applications.



8. Comparison of Technical Parameters between High-Temperature PET and PI Tape
8.1 Technical Parameter Table
Parameter
PET Tape
PI Tape
Temperature
180°C (continuous)
300°C (continuous)
Dielectric Constant
3.2
3.5
Hygroscopicity
0.3%
0.1%
Cost
1x
2.8x
8.2 Analysis of Applicable Scenarios
● 
PET Tape: Cost-effective for EV batteries, electronics assembly, medical sterilization (where temperatures rarely exceed 180°C).
● 
PI Tape: Mandatory for aerospace wiring, nuclear equipment, and 3D printer beds (exposed to rapid thermal cycling).
ConclusionHigh-temperature PET tape’s versatility, cost-effectiveness, and performance make it indispensable across industries. From insulating EV batteries to protecting medical devices, its balance of thermal resistance, insulation, and mechanical strength addresses critical operational needs. As technology advances, its applications will likely expand into emerging fields like solid-state batteries or space electronics.