Matte Black Polyester Film

Matte black polyester film from Films Protective Company is a factory-made PET material for light blocking, electrical insulation, electronic labels, gaskets, spacers, and precision die-cut parts. As a manufacturer, we control matte surface uniformity, black density, roll flatness, and converting stability, with typical light blocking performance reaching >=99.0% at 50 um. It is used where compact electronic parts need low light transmission, clean die-cut edges, stable insulation, and a non-glossy black finish.

Product Overview

This matte black polyester film is made for functional converting, not simple black coverage. The opaque PET base blocks visible light, while the matte finish reduces reflection near LEDs, display edges, sensors, switch panels, and gasket areas. In compact electronics, a narrow uncovered gap can still show as a bright line, so thickness, black density, and surface gloss should match the final part design.

A 50 um grade can reach <=1.0% visible light transmission, depending on structure and test method. Compared with softer black plastic sheets, the PET base handles better during slitting, lamination, punching, and kiss cutting. For adhesive-backed parts, it can be laminated with acrylic adhesive and release liner while staying flat through punching, waste removal, and peeling. This matters when one component works as a label, spacer, light shield, and insulating layer.

Benefits

• Reduces light leakage around LEDs, sensors, keypads, display frames, and internal gaps.
• Matte black surface gives converted parts a low-reflection finish instead of a shiny plastic look.
• PET base film provides stable dielectric performance for gaskets, spacers, and insulation pads.
• Supports slitting, lamination, punching, kiss cutting, waste removal, and small-part die cutting.
• Low thermal shrinkage, typically <=1.5% at 150 C for 30 min, helps protect hole position, edge shape, and part size.
• Controlled roll flatness helps reduce curling during label production and adhesive-backed assembly.
• Deep black density supports rating labels, barcode labels, component marking, and shielding parts.

How does matte black polyester film reduce light leakage in die-cut electronic parts?

Matte black polyester film reduces light leakage through opacity, matte surface control, and stable converted shape. The black PET base blocks unwanted light paths, while the non-glossy surface lowers reflection from nearby metal, plastic, adhesive, or coated layers. After die cutting, the film can cover small gaps around LEDs, display edges, sensors, keypads, and gasket areas. Thickness, light blocking rate, adhesive structure, and die-cut tolerance should be selected together, not judged by color alone.

TDS

Production Line

What matters when this film is used for labels, gaskets, and insulation pads?

When matte black polyester film is used for labels, electronic gaskets, or insulation pads, selection should go beyond color and nominal thickness. Key details include light blocking rate, visible light transmission, surface gloss, dielectric strength, heat shrinkage, roll flatness, black density consistency, and die-cut edge quality. For adhesive-backed parts, the film should remain stable during lamination, punching, kiss cutting, waste removal, and peeling. Final grade selection should be confirmed by sample testing under the actual part size, adhesive structure, and assembly temperature.

Applications

• Die-cut electronic gaskets for light blocking, spacing, and insulation
• PET insulation pads for compact electronic components
• Black rating labels, barcode labels, and component identification labels
• Light-shielding frames around LED, sensor, keypad, and display modules
• Matte black spacer films for small parts with narrow fitting tolerance
• Adhesive-backed die cut PET film for punching, kiss cutting, and peeling
• Internal black PET film components requiring low reflection and stable opacity
• Industrial labels needing stable shape, clean edges, and durable black appearance

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FAQ

What is matte black polyester film used for?

It is used for light blocking, electronic insulation, black labels, die-cut gaskets, spacers, and internal shielding parts.

Can the film be die cut into small parts?

Yes. It is suitable for slitting, laminating, punching, kiss cutting, waste removal, and precision converted parts.

Does the matte black surface reduce reflection?

Yes. The non-glossy surface helps reduce unwanted reflection inside electronic assemblies.

What thickness is commonly used?

Common choices include 25 um to 188 um. Thicker grades usually provide stronger opacity and better handling during converting.