Black Polyimide Tape (Black PI Tape / Black Insulation Tape) – Silicone or

Product Specification

1. Product Overview

Nomay Black Polyimide Tape is a single-sided adhesive tape combining a black PI backing with silicone or acrylic pressure-sensitive adhesive. Common names include black PI tape and black polyimide insulation tape.

The product family supports electrical insulation, component protection and black appearance requirements. Light-blocking versions are available on request for selected camera, display, backlight and sensor applications.

For buyers searching for light blocking polyimide tape or light shielding tape, Nomay can evaluate the required black film, coating, adhesive and converted shape against the customer's optical targets.

Black appearance, light blocking, low reflection and electrical insulation are separate selection requirements. Specify the functions needed so that the complete construction can be matched to the application.

2. Product Construction

Backing Material: Black polyimide film or black-coated polyimide film, depending on the selected model
Adhesive: Silicone or acrylic pressure-sensitive adhesive
Adhesive Side: Single-sided
Color: Black
Surface Finish: Matte or gloss requirements confirmed by construction
Formats: Slit rolls, liner-backed rolls, adhesive sheets and custom die-cut parts

Pigmented black film and black-coated film are different constructions. Confirm the coating location, surface durability and edge appearance where relevant.

Finished tape thickness includes the backing, adhesive and any additional black coating. A removable release liner is excluded unless specifically stated.

3. Key Features and Buyer Benefits

Black Appearance
A dark surface can support appearance control around internal frames, connectors and electronic assemblies.

Light-Blocking Options
Selected film and coating constructions can be evaluated to limit unwanted light transmission around camera modules, display borders, backlight components and sensors.

Matte and Low-Reflection Options
Matte, low-gloss or low-reflection versions can be evaluated on request where surface reflections affect the application. These properties require separate optical criteria.

Thin Electrical Insulation
Insulating constructions provide a dielectric layer where installation space is limited. Confirm the electrical performance of the actual black film, coating and adhesive.

Adhesive Selection
Silicone and acrylic options support different temperature, bonding, removal and contamination requirements.

Precision Converting
Slit rolls and liner-backed materials can be converted into frames, rings, tabs and other shapes for repeatable placement.

4. Adhesive Selection

Silicone Adhesive
Suitable for evaluation in selected thermal masking and component-protection processes. Confirm adhesion during heating, exposure time, removal behavior and compatibility with subsequent coating or bonding.

Acrylic Adhesive
Suitable for evaluation in electrical insulation, component attachment and optical-module assembly where the selected adhesive meets bonding and contamination requirements.

The adhesive chemistry alone does not guarantee clean removal, low outgassing or a particular service temperature. Where silicone contamination matters, assess the tape, liner and converting process together.

5. Reference Specifications and Customization

The following are industry reference constructions for black PI tape. They are selection guidance, not confirmed Nomay stock specifications or guaranteed performance values.

Black PI with Silicone Adhesive:

• Reference backing thickness: approximately 0.025 mm

• Reference total thickness: approximately 0.064 mm

• Reference roll length: approximately 33 m

• Published comparison products include thermal applications up to 260°C; the selected Nomay model and exposure time require confirmation

Black PI with Acrylic Adhesive:

• Reference backing thickness: approximately 0.050 mm

• Reference total thickness: approximately 0.080 mm

• Reference roll length: 100 m

• A published comparison construction has an upper working temperature of 155°C; other acrylic constructions require their own data

Width: Custom slit widths, subject to black-backing availability, adhesive construction, winding requirements and tolerance.

Other Thicknesses and Lengths: Available for evaluation according to the required construction. Specify finished-roll and master-roll requirements separately.

Peel Adhesion: Confirm for the selected adhesive, backing, coating and test method.

Optical Performance: Confirm light transmittance, optical density, reflectance and gloss for the selected wavelength range and finished construction.

Do not combine one reference construction's thickness with another product's temperature or adhesion value. Amber PI specifications do not automatically apply to black PI or optical versions.

6. Application Industries

• Camera and imaging-module assembly

• Display and backlight assembly

• Optical and electronic sensors

• Consumer and automotive electronics

• Industrial control equipment

• Electrical components, coils and transformers

• PCB assembly

• Precision die-cut converting

Optical, thermal, electrical and cleanliness requirements must be matched to the selected version.

7. Application Scenarios

Camera-Module Light Control
Selected light-blocking versions can be evaluated around housings, internal frames and other locations where unwanted light entry must be controlled. Confirm wavelength range, transmittance, reflection, cleanliness and die-cut geometry.

Display and Backlight Edge Masking
Light-blocking adhesive frames or strips can be evaluated around display borders and backlight components to reduce edge light leakage. Check overlap, placement tolerance, adhesive durability and performance after aging.

Optical-Sensor Protection
Selected versions can provide localized light control and protection around sensors. Visible-light performance must not be assumed to apply to infrared wavelengths.

Black Electrical Insulation
For dielectric separation around connectors, control boards and electronic components using an electrically qualified construction.

Automotive Cameras, Displays and Controls
For selected light-control, insulation or protection parts after assessment of temperature cycling, humidity, vibration, chemical exposure and service life.

PCB and Component Masking
For selected temporary masking processes using an adhesive and backing qualified for the actual heating, flux and removal conditions.

Custom Die-Cut Parts
Frames, rings, tabs and other adhesive shapes can be produced to the required dimensions and liner format. Light leakage must be evaluated in the assembled part, including seams and edges.

8. Optical and Surface Performance

Light Transmittance and Optical Density
Specify maximum transmittance or minimum optical density together with wavelength range, measurement method and acceptance criteria. Do not interpret black appearance as a guarantee of zero transmission or complete blackout.

Reflectance and Gloss
A tape that blocks transmitted light may still reflect light from its surface. Low-reflection and matte requirements must be specified separately.

Finished-Assembly Performance
Film measurements alone do not establish the performance of a frame or assembled module. Check gaps, cut edges, pinholes, stretching, placement and adhesive movement.

Coating Durability
For coated versions, evaluate rubbing, scratching, coating adhesion and chemical compatibility. Confirm acceptable color transfer and surface damage.

UV and Environmental Exposure
Outdoor or UV durability requires separate testing. Black color alone does not establish resistance to ultraviolet exposure.

9. Thermal, Adhesion and Electrical Performance

Temperature
Confirm continuous service temperature, peak process temperature, exposure time and heating cycles for the complete tape. For optical versions, verify optical performance after thermal exposure where required.

Peel Adhesion
Specify substrate, specimen width, peel angle, test speed, dwell time and conditioning. Compare silicone and acrylic versions using compatible test conditions.

Removal and Residue
Removal behavior depends on the adhesive, substrate, pressure, temperature, dwell time and peeling method. Clean removal is process-specific.

Electrical Insulation
Black pigments or coatings can affect electrical behavior. Verify breakdown voltage, leakage or resistance requirements for the selected construction.

ESD and Conductivity
ESD or conductive versions can be evaluated separately on request. Define the required resistance, charge-decay or unwind/removal-voltage performance. A black or light-blocking version is not automatically ESD-safe or conductive.

10. Application and Validation Procedure

Step 1: Identify the required combination of black appearance, light control, insulation, protection and masking.

Step 2: Specify optical targets where needed, including wavelength, transmittance, reflection and gloss.

Step 3: Select the backing, coating and adhesive against the substrate, temperature and contamination requirements.

Step 4: Confirm thickness, width, roll length, liner and die-cut drawing.

Step 5: Apply to a clean, dry surface with uniform pressure. Avoid stretching, wrinkles and trapped air.

Step 6: Validate the complete assembly through the intended thermal, humidity, chemical and mechanical conditions.

Step 7: Inspect light leakage, adhesion, surface condition, electrical performance and removal behavior as applicable before mass production.

11. Comparison and Selection Guide

Standard Black PI Tape
Select for black appearance, protection or insulation where the chosen construction meets the required performance.

Light-Blocking Black PI Tape
Select when unwanted light transmission must be controlled against a defined optical target.

Low-Reflection or Matte Black PI Tape
Specify when reflected light or surface gloss matters in addition to transmission.

ESD or Conductive Black PI Tape
Request a separately evaluated construction when electrical charge control or conductivity is required.

Silicone vs. Acrylic Adhesive
Choose using the actual temperature, substrate, bonding duration, removal and contamination requirements.

Black PI vs. Black PET Tape
Compare complete tape specifications against the process and budget. The backing material and color alone do not establish suitability.

12. Send Your Application Requirements

For product selection, sample evaluation and quotation, please provide:

• Application and required functions

• Bonding substrate and surface condition

• Silicone or acrylic adhesive requirement

• Temporary masking or permanent attachment requirement

• Wavelength range and light-transmittance or optical-density target, if applicable

• Reflectance, gloss and matte-finish requirements

• Continuous operating temperature, peak temperature and exposure time

• Backing thickness, finished thickness and tolerances

• Width and finished-roll or master-roll length

• Peel adhesion and test method

• Electrical-insulation, ESD or conductive requirements, if applicable

• Removal, residue, outgassing and cleanliness requirements

• Liner, die-cut drawing and placement requirements

• Order quantity and destination country

• Any required testing or certification standard

Nomay will confirm the suitable construction, optical and technical 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.