Pressboard & Paper Materials

Laminated Pressboard for Transformer Insulation

Also known as: Laminated Insulation Board

Laminated pressboard for transformers combines dielectric performance with mechanical support for structural insulation parts. Standard sheet requirements and drawing-based machined components are confirmed according to the customer specification, application and acceptance criteria.

Dimensions, materials, tolerances and testing requirements are confirmed according to customer drawings and order specifications.

Key functions and options

  • High density and mechanical strength
  • Good dielectric strength
  • Low compression ratio
  • Stable performance for machined components

Typical applications

  • Insulation structural parts
  • Spacers and strips
  • Pressure plates
  • Custom machined components
Quotation preparation

Information to include with your RFQ

  • Material grade
  • Drawing or dimensions
  • Thickness and tolerances
  • Quantity

For custom parts, a dimensioned drawing is the most reliable starting point. Drawings can be emailed to sales@boreviax.com.

Dimensional inspection of transformer insulation components
Product guidance

How laminated pressboard is used in transformer insulation structures

Laminated pressboard is produced by bonding and hot pressing insulation pressboard layers. The resulting material is selected for components that need greater thickness, rigidity and mechanical support while retaining electrical insulation performance.

Supply and processing options

  • Standard sheets or customer-specified dimensions
  • Machined rings, supports, pressure parts and structural components
  • Drawing-based holes, profiles and assembled configurations
  • Packaging adapted to protect edges and machined surfaces

Specification confirmation

  • Material grade and approved equivalent
  • Thickness, dimensions and critical tolerances
  • Drawing and revision number
  • Inspection and documentation requirements
  • Quantity, packing and delivery destination

Laminated pressboard FAQs

Can laminated pressboard be machined to a customer drawing?

Yes. Boreviax coordinates drawing review, material confirmation, sample approval where required, inspection and export delivery through the authorized insulation manufacturer.

Which dimensions are available?

Available grades, thicknesses, sheet sizes and machined dimensions are confirmed against the project specification rather than assumed from a generic range.