Materials / Formex®
Flame-Retardant Polypropylene · Structural Insulation

Formex® — lightweight, flame-retardant insulation.

UL 94 V-0 certified polypropylene sheet, lightweight and rigid. Ideal for internal insulation of electronic enclosures, battery separators, and lightweight protection under strict fire-safety requirements.

Overview

The lightweight structural insulator of choice for electronics.

Formex® is a modified polypropylene sheet, UL 94 V-0 certified, developed specifically for internal insulation applications in electronic and electrical equipment. Its low density and rigidity make it the material of choice where every gram counts.

Its UL 94 V-0 certification guarantees it self-extinguishes in under 10 seconds with no flaming drips — a key requirement for UL- and CSA-certified equipment. P&P Colorismédia laser-cuts it for precise shapes and tight tolerances, with no thermal deformation.

Technical Data
Flame certification
UL 94 V-0
Available thicknesses
0.25 – 1.5 mm
Service temp.
Up to 105°C
Density
~0.9 g/cm³
Properties

Technical characteristics of Formex®.

UL 94 V-0 Certification

Self-extinguishes in under 10 seconds, with no flame propagation or flaming drips. An essential requirement for UL- and CSA-certified equipment.

Lightweight

Density of about 0.9 g/cm³ — one of the lightest plastics. Reduces overall equipment weight without compromising insulating properties.

Good Dielectric Properties

High surface and volume resistivity. Maintains its electrical insulation even under humid conditions or elevated temperature.

Ease of Fabrication

Cuts cleanly with a laser, cold-bends easily for simple 3D shapes. Ideal for rapid prototypes and short runs of internal insulation.

Applications

Uses in industry.

  • 01Internal insulation for power supply and inverter enclosures
  • 02Cell separators in battery modules
  • 03Insulating barriers in electrical panels and enclosures
  • 04Protective sleeves for sensitive circuit boards
  • 05Interleaves and insulating backing in UL-certified equipment
Minimum order
None
Available format
Sheets, custom cut parts
Cutting process
Laser · Die-cutting

Need custom Formex® parts?

Free quote within 24 h, no minimum order, prototypes welcome.

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