aluminized mylar film 3u

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Shijiazhuang Dajia New materials Technology Co.,Ltd

11 year

Product details

4.5Micron One Side Metallized PET Film for Diaphragm

Product Description

Our 4.5 micron one‑side metallized PET film is a lightweight, high‑performance membrane engineered for critical diaphragm applications. The film consists of a premium polyester (PET) substrate with a uniform metallic coating (typically aluminum) applied only on one side. With a total thickness of just 4.5 µm, it offers an excellent combination of low mass, high tensile strength, and consistent surface conductivity. The non‑metallized side remains as pure PET, providing controlled damping and reliable adhesive bonding when assembled into transducer or acoustic devices. Manufactured under cleanroom conditions, the film exhibits minimal pinholes, excellent thickness uniformity, and stable electrical properties.

Features

Total thickness: 4.5 µm – ultra‑light for fast mechanical response

One‑side metallization: Conductive layer on one side only; opposite side is bare PET for optimized mechanical damping

Metal type: Typically aluminum (other metals available on request)

Uniform coating: Consistent surface resistivity across the entire web

High flexibility & elasticity: Allows large, reproducible deflections without fatigue failure

Low hysteresis: Maintains linear displacement under dynamic loading

Pinhole‑free: Reduces electrical shorts and signal noise

Good chemical & humidity resistance: PET base withstands typical operating environments

Applications

Condenser microphone diaphragms (electret and externally polarized) – as the moving electrode

Electrostatic speaker (ESL) membranes – for full‑range or headphone drivers

Acoustic pressure sensors – miniature capacitive transducers for industrial or medical use

Ultrasonic transducers – as a vibrating membrane in air‑coupled applications

Proximity & touch sensors – flexible capacitive sensing elements

Thin‑film actuators – where a conductive, low‑mass moving layer is required

Prototyping of audio and MEMS‑like devices – quick evaluation of diaphragm designs

The film can be supplied as sheets, slit rolls, or pre‑tensioned rings to fit standard diaphragm frames and capsule housings. It meets tight tolerance requirements for professional audio and sensor manufacturing.

Product picture:

One Side Aluminum Metallized PET Mylar Film

4.5 Micron One Side Aluminum Metallized PET Mylar Film

Packaging

Contact

Contact:Our company is establised in 2004. we have much experience in plastic film.Our main products including 1.Metallized PET Film 2.PET color film (PET Milky White Film , PET White Film , PET Black film ect ) 3.3D Pepper Ghost Foil 4. Polyimide Film and Metallized POLYIMIDE FILM. 5. TPU Film 6.PVDF Film etc
These products are widely applied to the packaging and printing of the industries including electronical products, food, commodities, medicine, labels, gifts etc.If you need anything, please feel free to contact me.

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Suppliers

Shijiazhuang Dajia New materials Technology Co.,Ltd

Audited supplier

11 year

Main Product: Metallized Pet Film , Polyester Film , Hologram Projection Film , White Pet Film , PP Synthetic Paper, PET Hairline Film

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