Paper Based Laminates (SRBP)

Paper based laminates (sometimes referred to as SRBPs or synthetic resin bonded papers) are manufactured from stacked layers of paper impregnated with specially formulated synthetic resins. When bonded at elevated temperatures and pressure, the result is an economical, lightweight thermoset composite with exceptional electrical insulation properties, good mechanical properties, and inherent rigidity.
Though paper laminates don't exhibit the same impact strength or mechanical characteristics as fabric-based equivalents, their superior electrical insulation and low water absorption make them better suited to high- and medium-voltage applications. SRBPs, especially B1 and B3, are particularly suited for use in environments of varying humidity or where they are likely to become immersed in oil.
Individual grades can be supplied as custom components, cut-to-size pieces, or full sheets, depending on your requirements. Similar to plastic materials, they can be machined in-house using traditional methods such as routing, drilling, milling and sawing. The majority of our equipment is CNC operated, ensuring tight tolerances and high accuracy.
You'll find application information, technical specifications and availability for each individual grade by clicking the 'view product' buttons below. Should you require additional information or would like to discuss your exact requirements, please contact our technical sales team.

Paper Based Laminate (SRBP) Availability

B1 Phenolic Paper Laminate
B1 Phenolic Paper Laminate

A premium grade paper-based laminate providing superior electrical insulation. Suitable for high voltage applications in air or immersed in oil. Temperature range: up to +105°C (+120°C short term).

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B3 Phenolic Paper Laminate
B3 Phenolic Paper Laminate

B3 is a close comparison to B1 in terms of physical characteristics. Though its electrical strength is lower, it performs better when immersed in oil. Temperature range: up to +105°C (+120°C short term).

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B4 Phenolic Paper Laminate
B4 Phenolic Paper Laminate

An economical alternative to B1 and B3. Although suitable only for low-voltage applications, it has better mechanical properties than both prior grades. Temperature range: up to +100°C (+120°C short term).

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