3M AL-37BLK Black Polyester Film (Matte Finish) Laminated Aluminum Foil with Conductive Acrylic Adhesive
The 3M AL-37BLK tape consists of a black matte‑finish polyester film laminated to a soft aluminum foil backing, coated with an electrically conductive pressure‑sensitive acrylic adhesive. It is supplied on a removable liner for easy handling and die‑cutting, and meets UL 510 flame‑retardancy requirements.
Typical applications include grounding and EMI shielding for equipment, components, and shielded rooms. The tape’s performance depends on factors such as conductivity, foil thickness, and adhesive strength, with shielding effectiveness measured by standard test methods.
| Backing thickness | 1.7 mil (0.042 mm) |
|---|---|
| Total thickness (backing plus adhesive) | 2.8 mil (0.07 mm) |
| Adhesion to steel | 3.4 N/cm |
| Electrical resistance through adhesive | 0.05 Ω/25 mm |
The standard length is 20 m.
The tape is UL recognized for flame retardancy per UL 510.