Polyimide Silicone Adhesive Tape
 | Polyimide Silicone Adhesive Tape
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Insulative Tape Company is a manufacturer of polyimide silicone adhesive tape for high-temperature electrical insulation, motor winding, transformer layer insulation, and coil wrapping. The tape combines amber polyimide film with silicone pressure-sensitive adhesive to support short-term heat resistance up to 260C, stable dielectric protection, and controlled clean removal after heat exposure. It is made for electrical assemblies where edge hold, residue behavior, and insulation strength must be checked on real working surfaces before production use.
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Product Overview
This high temperature polyimide insulation tape is made for electrical insulation work that faces heat, winding pressure, and repeated handling. The polyimide film gives a thin but strong insulation layer, while the silicone adhesive helps the tape stay in contact with varnished coil surfaces, copper wire, insulation film, and metal cores. Instead of only focusing on a temperature number, this product is designed around practical checks such as dielectric strength, heat aging behavior, edge hold, and residue after controlled heat exposure.
For motor winding insulation, transformer layer separation, coil bundling, capacitor wrapping, cable wrapping, and connector protection, engineering teams usually need more than a simple “high temperature tape” claim. They need to know whether the tape can resist puncture during wrapping, keep its edge after heating, maintain insulation performance, and leave acceptable residue after the actual heating cycle. Our typical factory test range includes total thickness from 55 um to 70 um, dielectric breakdown voltage around 6000 V-7000 V, and peel adhesion to steel around 5.5-7.5 N/25 mm, depending on the confirmed construction.
This heat resistant PI film tape is supplied for applications where silicone adhesive must balance holding power, heat stability, and controlled removability. In batch sample checks, residue and edge lifting are usually observed after heating on the actual working surface, because copper wire, varnished coating, insulation film, and metal parts may show different adhesive behavior.
Applications
- Motor winding insulation where dielectric strength, winding pressure, and edge hold after heating need to be checked.
- Transformer layer insulation for wrapped coils, insulation film, and varnished winding surfaces.
- Coil insulation in electrical assemblies exposed to heat, handling, and repeated wrapping pressure.
- Capacitor wrapping where thin insulation and stable silicone adhesive contact are required.
- High-temperature harness wrapping near heated electrical zones.
- Cable wrapping, flat cable insulation, and connector protection.
- Electrical insulation parts that need clean removal high temperature tape performance after controlled heat exposure.
- Metal core, copper wire, and molded electrical part insulation after sample validation.
What Should Be Checked After Heat Exposure Before Bulk Use?
Clean removal after heat exposure should be tested on the actual working surface, not judged only from a general data sheet. Before using polyimide tape for transformer insulation, motor winding, coils, or high-temperature electrical parts, engineers should check peel adhesion, dielectric strength, edge lifting, and adhesive residue after the expected heating cycle. Test surfaces may include copper wire, varnished coil surfaces, insulation film, metal cores, or molded electrical parts. Heating time, bonding pressure, surface oil, dust, and removal temperature can all affect residue performance.
Technical Data Sheet
Item | Typical Value |
Product Type | Single sided polyimide silicone adhesive tape |
Backing Material | Polyimide film |
Adhesive Type | Silicone pressure-sensitive adhesive |
Color | Amber |
Total Thickness | 55 um-70 um typical factory test range |
Polyimide Film Thickness | 25 um-50 um typical reference |
Silicone Adhesive Coating | 25 um-30 um typical reference |
Peel Adhesion to Steel | 5.5-7.5 N/25 mm typical reference |
Dielectric Breakdown Voltage | 6000 V-7000 V typical reference |
Tensile Strength | 90-130 N/25 mm typical reference |
Elongation at Break | 45%-70% typical reference |
Short-Term Temperature Resistance | Up to 260C, application dependent |
Long-Term Temperature Reference | 180C Class H reference, if validated |
Surface Compatibility | Copper wire, varnished coil, insulation film, metal core |
Residue Observation | Check after sample heat exposure on actual surface |
Edge Lifting Check | 24 h-72 h after heating cycle, sample reference |
Standard Width Range | 5 mm-500 mm |
Roll Length | 33 m, 50 m, 66 m, or confirmed specification |
Storage Condition | 20C-30C, dry and clean environment |
Benefits
- Polyimide film backing supports high dielectric strength and stable insulation under heat.
- Silicone pressure-sensitive adhesive helps maintain contact on curved coil surfaces and metal parts.
- Total thickness from 55 um to 70 um can match different wrapping and insulation needs after sample confirmation.
- Short-term heat resistance up to 260C can be used as a typical reference under confirmed test conditions.
- Dielectric breakdown voltage around 6000 V-7000 V supports selection for motors, transformers, and coils.
- Class H 180C insulation reference can be considered when the complete insulation system is validated.
- Sample heat aging checks can review edge lifting, adhesive transfer, and residue after heat exposure.
- Surface cleanliness and bonding pressure can be checked during trial use to reduce lifting or residue risk.
How Does Silicone Adhesive Support High-Temperature Electrical Insulation?
In a silicone adhesive electrical insulation tape, the adhesive layer is not selected only for quick tack. It must stay stable when motor windings, transformer layers, coils, and insulated conductors meet heat during assembly or service. In sample winding checks, the tape should keep contact on curved surfaces without obvious edge lifting after heating. The polyimide film works as a thin insulation barrier, while the silicone adhesive supports adhesion on varnished insulation materials, copper wire, and metal cores.
FAQ
Is this tape suitable for Class H insulation?
It can be used as a Class H 180C insulation reference when the full electrical insulation system, material stack, and application test are validated.
Can the tape be removed cleanly after heating?
Clean removal is application dependent. We recommend checking residue after the planned heating time, bonding pressure, and actual surface condition.
What surfaces should be tested before production?
Common test surfaces include varnished coil, copper wire, insulation film, metal core, molded electrical parts, and other real assembly surfaces.
What data should be checked before confirming thickness?
Typical checks include total thickness, dielectric breakdown voltage, peel adhesion, edge lifting after heating, and residue observation on the actual working surface.