Black Mylar Roll Flame Retardant High Temperature Adhesive Backed PCB Insulation Gasket

A flame retardant black Mylar film supplied as continuous roll stock, and then converted into fireproof insulation gaskets for PCB circuit boards. Because it is delivered on a roll, the material can be laminated with a custom adhesive backing and die cut in the same production run, which keeps cost low and lead time short for board-level insulation parts. The black pigmented film is opaque, hides the trace layout and light leakage, and accepts printed or laser-marked part numbers. The gasket is placed under the board, between the board and the metal chassis, and around high voltage terminals, where it must stop tracking and short circuits while surviving the heat of soldering and long-term thermal aging.

• Roll stock, converted to gasket — roll width 5mm to 1000mm and roll length 50m to 500m, slit and die cut to any board outline.
• Custom adhesive backing — acrylic, silicone or 3M 467 / 468 double sided tape with release liner, for manual or pick-and-place assembly.
• Black opaque flame retardant film — UL94 V-0, self-extinguishing, blocks light and hides PCB layout, clean industrial look.
• High temperature resistance — stable from -40°C to 140°C, survives wave solder, reflow rework and driver thermal load.
• Fireproof insulation for PCB — above 30 kV/mm dielectric strength, protects the board from tracking, arc and short circuit.
• Thin and flexible — 0.05mm to 0.5mm, conforms to the board and chassis without adding assembly height.

The base material is a biaxially stretched PET polyester film produced from dimethyl terephthalate and ethylene glycol by ester exchange and vacuum polycondensation. The following typical property values apply to both the flame retardant series and the standard series.

Reference standards: ISO 1183, ASTM D1003, ASTM D570, ISO 527, ISO 178, ISO 306, ISO 11359, IEC 60250, IEC 60243, IEC 60093, UL 94 / UL Bulletin 94. The above figures are typical values obtained under standard test methods and are not a guarantee of performance under unstable application conditions. Test reports for each batch are available on request.

• PCB circuit board insulation and bottom-side fireproof gaskets
• Power supplies, electronic ballasts and LED drivers
• Inverters, frequency converters and drive controllers
• Transformers, motors and electric vehicle electromechanical parts
• Cable harness, connector and terminal insulation
• Lithium battery protection board and pack internal isolation

• Roll to gasket in one supplier — we supply the roll, laminate the adhesive and deliver the finished gasket, so you deal with one process owner.
• Adhesive selection support — we match the adhesive to your surface energy, rework requirement and temperature instead of shipping a generic tape.
• Stable black shade and gauge — tight thickness and color control across rolls keeps automatic feeding and die cutting lines stable.
• Free roll samples — 3-5 working days for a standard roll sample, so you can trial lamination and die cutting before ordering.
• Export service — FOB / CIF / EXW, T/T, L/C and Western Union, roll packed on pallet with moisture barrier film.