Melinex® Film 238 is a specially engineered, translucent white polyester film designed to meet the demanding insulation requirements of modern electrical systems. The melinex 238 film delivers exceptional reliability in harsh operating environments, including those with extreme chemical exposure and high thermal stress. Its matte, milky-white surface and robust property profile make it a critical component in advanced electrical insulation applications.

Primary Applications

This film is the material of choice for critical insulation roles in:

1. Motors & Compressors: Specifically ideal for slot insulation, phase insulation, and slot wedges in refrigerator and air-conditioning compressor motors (hermetic motors).

2. Industrial Equipment: Used in insulation systems for rotating electrical machines where high chemical resistance and hydrolysis stability are required.

3. Precision Gaskets & Components: Serves as material for precision punched parts and insulating spacers in various industrial assemblies.

Approvals & Typical Properties:

Melinex® Film 238 holds key safety certifications and is available in a standardized range of thicknesses:

UL Recognized Component:

For 300 gauge (0.075 mm): RTI is 140°C (Electrical) and 125°C (Mechanical - STR).

For 1000 gauge (0.25 mm): RTI is 140°C (Electrical) and 130°C (Mechanical - STR).

Available Thickness Range:

The film is supplied in a comprehensive range to suit various design needs:

300 gauge (0.075 mm)

500 gauge (0.125 mm)

760 gauge (0.190 mm)

900 gauge (0.225 mm)

1000 gauge (0.25 mm)

1200 gauge (0.30 mm)

1400 gauge (0.35 mm)

Melinex® Film 238 stands out due to its targeted engineering for severe-service applications:

Superior Thermal Stability: Offers a high UL Relative Thermal Index (RTI), typically ranging from 125°C to 140°C, ensuring long-term performance and durability at elevated operating temperatures.

Excellent Electrical Properties: Provides high dielectric strength (excellent voltage withstand capability) and stable dielectric constant for reliable electrical insulation.

Outstanding Mechanical & Chemical Resistance: Inherits high tensile strength, elongation at break, and robust resistance to oils, acids, and alkalies from its base formulation, guaranteeing physical integrity in challenging conditions.