Single-Sided Polyimide Tape (PI Film Tape / Polyimide Adhesive Tape) – Silicone

Product Specification

1. 1. Product Overview

   Nomay Single-Sided Polyimide Tape combines a polyimide film backing with silicone pressure-sensitive adhesive on one side. Also known as PI film tape, polyimide adhesive tape or single-coated polyimide tape, it is designed for PCB solder masking, electrical insulation and protective wrapping.

   The uncoated PI backing faces outward while the adhesive side bonds to the component. Supply formats include slit rolls, liner-backed rolls and custom die-cut parts.

   The specifications below apply to the single-sided silicone construction. Acrylic adhesive versions require separate selection and specification confirmation.

   2. Product Construction

   Base Material: Polyimide film
   Adhesive: Silicone pressure-sensitive adhesive
   Adhesive Side: Single-sided
   Color: Brown / Amber
   Standard Format: Self-wound roll
   Optional Formats: Release-liner-backed rolls and custom die-cut parts

   Finished tape thickness consists of the PI backing plus its adhesive layer. A removable release liner is excluded from finished tape thickness unless specifically stated.

   Backing thickness, adhesive thickness and finished tape thickness must be distinguished when agreeing on a specification.

   3. Adhesive Selection

   Silicone Adhesive
   The silicone construction is suitable for evaluation in temporary high-temperature masking and electrical insulation applications. Selection depends on the bonding surface, temperature profile, exposure time, adhesion and removal requirements.

   Acrylic Adhesive Alternative
   Acrylic PI tape may be selected for bonding or insulation applications requiring a different adhesive chemistry. Its temperature, peel adhesion and removal performance must be assessed separately. The silicone specifications on this page do not apply to an acrylic version.

   For silicone-sensitive processes, request a separately evaluated non-silicone construction and specify contamination requirements.

   4. Available Specifications

   Thickness: Nomay's stated thickness range is 0.012–0.1 mm, with thicker constructions available on request. Confirm whether the requested value refers to the PI backing or finished tape thickness before ordering.

   Backing Thickness: Selected according to the required finished thickness, electrical insulation and handling performance. Confirm the backing and adhesive thicknesses together.

   Width: 0.1–1040 mm, depending on construction and converting requirements. Narrow slit widths require confirmation of tolerance, winding and handling suitability.

   Finished Roll Length: Customized according to thickness, width and winding requirements. Please specify the required length.

   Master Roll Length: Approximately 3000 m, 1000 m or 600 m, matched to the selected thickness and construction. These lengths are not interchangeable across all specifications.

   Color: Brown / Amber.

   Peel Adhesion: Nomay's stated range is 10–1000 g. The force-unit convention, specimen width and peel-test conditions must be confirmed before this range is used as an acceptance specification.

   Temperature Resistance: 260–300°C across selected silicone constructions, subject to confirmation of exposure time and process conditions. This range does not represent a continuous operating rating for every model.

   Available Formats:

   • Self-wound rolls

   • Custom slit rolls

   • Release-liner-backed rolls

   • Custom die-cut insulation and masking parts

   Not every thickness, width and roll-length combination is available together. The final specification must be confirmed as a complete construction.

   5. Key Features and Buyer Benefits

   • One adhesive-coated side for direct positioning, wrapping and masking

   • PI film backing for thin electrical insulation

   • Silicone adhesive for selected high-temperature processes

   • Brown or amber appearance for product identification

   • Custom slitting for different component sizes

   • Liner-backed options for handling and die cutting

   • Converted parts for repeatable placement in electronic assembly

   Adhesion, dielectric performance, heat resistance and removal behavior depend on the selected construction and application conditions.

   6. Application Procedure

   Step 1: Identify whether the requirement is temporary masking, electrical insulation, wrapping or component protection.

   Step 2: Specify the bonding substrate, surface condition, working temperature, peak process temperature and exposure time.

   Step 3: Confirm backing thickness, finished tape thickness, width, roll length and any release-liner or die-cut requirements.

   Step 4: Remove dust, oil, moisture and other contamination using a cleaning method compatible with the component. Allow the surface to dry.

   Step 5: Apply with uniform pressure. Avoid excessive stretching, wrinkles, trapped air and lifted edges.

   Step 6: Test the selected tape on the actual assembly under the intended process conditions.

   Step 7: For temporary masking, establish a suitable removal temperature, direction and speed. Check the surface after removal.

   7. Application Industries

   • PCB assembly and electronics manufacturing

   • Motors and transformers

   • Battery and energy-storage assembly

   • Wire, cable and sensor assembly

   • Automotive electrical and electronic components

   • Industrial electrical equipment

   • Electrical insulation converting and precision die cutting

   Each application requires confirmation of the selected tape construction and operating conditions.

   8. Application Scenarios

   PCB Solder Masking
   For masking edge connectors, gold fingers and selected no-solder areas during wave or dip soldering. Confirm adhesion, edge sealing, exposure time and removal behavior for the actual soldering process.

   Battery-Tab and Busbar Insulation
   For external insulation and positioning around tabs, busbars and battery-module components. Verify working voltage, edge protection, adhesion and mechanical stresses. This tape is not an internal battery separator or a thermal-runaway barrier.

   Motor and Transformer Insulation
   For selected coil wrapping, lead fixation and insulation tasks. Suitability depends on the complete insulation system, electrical requirements and service temperature.

   Cable and Sensor Protection
   For wrapping, securing or protecting selected wires, sensors and electrical components. Confirm flexibility, adhesion and compatibility with the contact materials. It is not automatically a waterproof cable-joint seal.

   Custom Die-Cut Parts
   Liner-backed constructions can be converted into shaped masking or insulation parts according to the customer's drawing, tolerances and assembly method.

   9. Performance and Operating Conditions

   Temperature
   Confirm continuous service temperature separately from peak process temperature. A 260–300°C temperature-resistance range must be matched to a specific construction, exposure duration and application.

   Peel Adhesion
   Peel results depend on substrate, specimen width, peel angle, test speed, dwell time, conditioning and temperature. The stated 10–1000 g range must not be treated as g/25 mm or converted to N/25 mm without a confirmed test basis.

   Electrical Insulation
   Dielectric strength and breakdown voltage depend on PI backing thickness, adhesive construction and test conditions. Specify working voltage and any required breakdown-voltage test.

   Removal and Residue
   Clean removal depends on substrate, adhesive coating, temperature, exposure time and removal method. Residue-free removal is not guaranteed for every surface or process.

   Special Performance
   Standard amber PI tape is not automatically ESD-safe or conductive. Request a separately specified version if static control or another special function is required.

   10. Comparison and Selection Guide

   Choose Single-Sided PI Tape when:

   • One adhesive surface is needed for direct attachment.

   • The outward-facing PI backing provides the required masking or insulation surface.

   • The selected adhesive matches the substrate and process.

   Choose Pure PI Film when:

   • No pressure-sensitive adhesive is required.

   • The film will be inserted, mechanically retained or laminated using a separate bonding system.

   Choose Double-Sided PI Tape when:

   • Two surfaces need to be bonded through a PI carrier.

   • Adhesive is required on both sides.

   Choose Acrylic or Non-Silicone PI Tape when:

   • The application requires a different adhesive chemistry.

   • Bonding, contamination and temperature requirements have been evaluated for that construction.

   Choose ESD PI Tape when:

   • Static generation or dissipation must be controlled.

   • Electrical resistance or static-performance requirements can be specified and verified.

   A release liner can support handling or die cutting of a single-sided tape; it is not a reason by itself to select double-sided tape.

   11. Important Selection Notes

   • The listed enterprise parameter range applies to the single-sided silicone construction.

   • Thickness values must identify backing thickness or finished tape thickness.

   • Master-roll length depends on thickness and construction.

   • Narrow slit widths require confirmation of tolerances and handling requirements.

   • Temperature resistance must include exposure time and process conditions.

   • Peel adhesion requires an agreed unit and test method.

   • Application testing is required before mass production.

   12. Send Your Application Requirements

   For product selection, samples and quotation, please provide:

   • Application and industry

   • Bonding substrate and surface condition

   • Temporary masking or permanent insulation requirement

   • Continuous operating temperature, peak process temperature and exposure time

   • PI backing thickness or finished tape thickness, with tolerance

   • Width and finished-roll or master-roll length

   • Required peel adhesion and test method

   • Working voltage and electrical insulation requirements

   • Removal and residue requirements

   • Release liner, die-cut drawing and dimensional tolerances, if applicable

   • Order quantity and destination country

   • Any required testing or certification standard

   Nomay will confirm the appropriate construction, specification, sample requirements, minimum order quantity and quotation. Required testing or certification can be arranged according to the agreed standard and product scope, with completion requirements confirmed before order acceptance.