Overview
Roving epoxy glass laminates use glass roving reinforcement rather than fine woven glass cloth. They are selected for larger insulating or structural components that need high mechanical strength, electrical insulation and thermal performance. Individual Isovolta grades below distinguish standard, high-temperature, flame-retardant and tracking-resistant options.
Grade-specific information
Available supplier grades
Each record below names the supplied grade, source and scope. Certifications, approvals, colours and forms apply only where stated for that specific grade.
Roving laminate for large construction, electrical-insulation and thermal-insulation components where high operating temperature and mechanical strength are combined.
- Product form
- Sheet
- Thicknesses / diameters
- 1–100 mm
- Formats / dimensions
- 2140 × 1040; 1040 × 1040; 2800 × 1220; 1400 × 1220 mm, subject to thickness
- Colour
- Brown
- Surface / structure
- Glass roving with temperature-resistant epoxy system
Key technical data
- Density: approx. 2.0 g/cm³ (ISO 1183/A)
- Flexural strength: 400 / 200 MPa at 23 / 150 °C (ISO 178)
- Tensile strength: 240 MPa (ISO 527)
- Thermal endurance: TI 180 (IEC 216)
Technical-data source: ISOVAL R technical datasheet (Isovolta Group, 2012)
ISOVAL® R-AL
Isovolta Group
Confirm with quotation
Large-part roving laminate for construction and electrical or thermal insulation where high operating temperature and high mechanical strength are required.
- Product form
- Sheet
- Thicknesses / diameters
- 1–160 mm
- Formats / dimensions
- 2140 × 1040; 2140 × 1220; 2800 × 1220; 1590 × 1220; 1590 × 1040 mm, subject to thickness
- Colour
- Brown
- Surface / structure
- Glass roving with temperature-resistant epoxy system
Key technical data
- Flexural strength: 400 / 200 MPa at 23 / 150 °C (ISO 178)
- Tensile strength: 240 MPa (ISO 527)
- CTI: 180 (IEC 60112)
- Thermal index: 180 °C (IEC 60216)
- Arc resistance: 184 s (ASTM D495-14)
Technical-data source: ISOVAL R-AL technical datasheet (Isovolta Group, 2016)
ISOVAL® 10 R
Isovolta Group
Confirm with quotation
Roving laminate for thermal insulation in equipment where high compressive strength and low thermal conductivity at elevated temperature are required.
- Product form
- Sheet
- Thicknesses / diameters
- 1–160 mm
- Formats / dimensions
- 2140 × 1040; 2140 × 1220; 2800 × 1220 mm, subject to thickness
- Colour
- White grey
- Surface / structure
- Glass roving with temperature-resistant epoxy system
Key technical data
- Standard: IEC 60893 EP GC 201; NEMA LI 1 G10
- Flexural strength: 450 MPa at 23 °C (ISO 178)
- Tensile strength: 280 MPa (ISO 527)
- Thermal class: 180 °C (IEC 216)
- Thermal conductivity: 0.29 W/m·K (DIN 52612)
Technical-data source: ISOVAL 10 R technical datasheet (Isovolta Group, 2021)
ISOVAL® RKB-FR
Isovolta Group
Confirm with quotation
Halogen-, antimony-, nitrogen-, phosphorus- and sulphur-free roving laminate for electrical insulation where high strength, tracking resistance and flame performance are required, including medium-voltage switch shift rods.
- Product form
- Sheet
- Thicknesses / diameters
- 1–60 mm
- Formats / dimensions
- 2140 × 1040; 1040 × 1040; 1890 × 1040 mm
- Colour
- Green beige
- Surface / structure
- Tracking-resistant and flame-retardant glass-roving epoxy laminate
Key technical data
- Flexural strength: 450 MPa (ISO 178)
- Tensile strength: 280 MPa (ISO 527)
- CTI: 600 (IEC 112)
- Flammability: UL 94 V-0
- Thermal endurance: TI 155 (IEC 216)
Technical-data source: ISOVAL RKB-FR technical datasheet (Isovolta Group, 2012)
ISOVAL® RKB S
Isovolta Group
Confirm with quotation
Roving laminate for switchgear cabinet cell partitions where tracking resistance and impulse-voltage-spike resistance are required.
- Product form
- Sheet
- Thicknesses / diameters
- 3, 4, 6 and 8 mm
- Formats / dimensions
- 2800 × 1220 mm; 2140 × 760 mm
- Colour
- Light beige
- Surface / structure
- Tracking-resistant glass-roving epoxy laminate
Key technical data
- Flexural strength: 350 MPa at 23 °C (ISO 178)
- Tensile strength: 250 MPa (ISO 527)
- CTI: 600 (IEC 112)
- Thermal endurance: TI 150 (IEC 216)
- Rated lightning impulse withstand: 95 / 125 / 170 / 170 kV for 3 / 4 / 6 / 8 mm
Technical-data source: ISOVAL RKB S technical datasheet (Isovolta Group, 2012)
Grade data is taken from the named manufacturer source. Current MaterialCut supply, final dimensions and commercial conditions are confirmed in the quotation.
