Pressboard Manufacturing Industry/Factory Consultant

We are CONSULTANT of computerized plant for MANUFACTURING electrical grade insulation pre-compressed PRESSBOARD. We have highly qualified and experienced engineers in our team & we keeps update ourself with latest machines and technology and also capable to develop customized machines according to products requirement. For plant/industry setup consultancy please contact us.

Press Machine

Hot-press-dried material not only exhibits the highest mechanical and electrical strength, but also offers dimensional stability and low shrinkage. The unique properties are produced on a board machine with a special hot-press. The latest paper machine technology allows exact control of CMD and MD profiles in the wet end of the board machine. This ensures excellent flatness of the resulting material. For plant/industry setup consultancy please contact us.

Water :

Quality Water is the most critical factor in the manufacture of Pressboard.

Hydraulic Press :

A most modern multiday-light Hydraulic Press of starting from 1200 tonnes capacity with Thermic Fluid Heating is used for the manufacture of Pre-compressed Pressboards.

Insulation for transformers :

Components and insulating sheets of pressboard are used in oil-cooled power transformers and distribution transformers primarily due to their high purity, mechanical strength and optimal oil-impregnability. The components formed of pressboard, such as angle rings, snout segments and end leads, enable an exact adaptation to the electric field conditions prevailing in the transformer.

Especially in the sector of high field strengths, the dimensional stability and good dielectric features are of great advantage. Special forming and pressing procedures are employed in the manufacturing technology of the pressboard components.

Pressboard knows in different-different countries in different-different names i.e. Transformerboard, Press Boards, Pressboards, Paperboard, insulation pressboard, cellulose based board, insulation board, transformer board etc.

Pressboard is a hard and rigid board having high purity with excellent electrical and mechanical properties, is specifically produced for the high voltage and extra high voltage Transformer Industry. The product is made from virgin softwood sulphate pulp.

Pressboard produces in sheet form in various thicknesses, various densities and manufacturing methods - calendared, hot-press-dried, corrugated or laminated structures.

Precompressed Pressboards are cellulose based and are produced from electrical grade kraft unbleached softwood pulp having high chemical purity and low conductivity.

They are produced on intermittent board machine and compacted without added bonding agents in multi day-light press under heat and pressure to achieve required properties. The boards are characterized by high density, high purity, uniform thickness, dimensional stability, low compressibility, low shrinkage and high electrical strength.

Precompressed Pressboards have high dielectric strength and find use as insulating material in different types of Power and Distribution Transformers, Capacitors, Switch Gears etc., in the form of winding cylinders, spacers, washers, keyway strips. etc.

Actually pre-compressed pressboard is a board made by compressing layers of insulation paper together and drying them through hot hydraulic press. For plant/industry setup consultancy please contact us.

Raw Material

The main raw martial of transformer board is cellulose based “electrical grade” unbleached sulphate softwood pulp.

Application

High Density Pressboard used for Power Transformers above 132kV Class and Medium Density Pressboard used for Power & distribution Transformers and switchgears below 132kV Class for electrical insulation purpose.

Pressboard is the base material for components like cylinders, strips, spacers, rings, washers, plates. Having control over the many steps of the whole process chain from unbleached electrical grade pulp to components is advantageous in respect to product quality, customized solutions and creating value in the field of application: insulation of high voltage transformers.