Insulating Press Board

Pressboard is a special product based on the purest cellulose, extracted from long-fibered coniferous trees. These are formed into a non-woven material without using any additional binding agents and then pressed.

Product Details

Insulating press board

Pressboard is a special product based on the purest cellulose, extracted from long-fibered coniferous trees. These are formed into a non-woven material without using any additional binding agents and then pressed. The high chemical purity means pressboard is an extremely suitable insulation material for electrical machines (impregnated with resin), capacitors (impregnated with oil or resin) and particularly oil-filled transformers. The material properties allow classification in insulation class A (105° C) and are manufactured in accordance with the IEC standard.

insulating press board
Depending on the thickness of the material, a distinction is made between sheet and rolled press board.


We provide complete solution of Insulation Pre Compressed Pressboard that are used in various types of transformers. We offer these pre compressed press board as per the requirement of clients in various parts of the world. These are manufactured using high grade of raw material and are supplied at competitive prices with different specifications. Salient features are as follows:

  1. Made of intermittent board machine using highly pure unbleached softwood sulphate pulp.

  2. Wet board pressed and dried simultaneously to obtain a board of good dimensional stability, electrical & mechanical strength

  3. Widely used as insulating material in Power & distribution transformers, capacitors in form of winding cylinders, spacers, key way, strips.

  4. Ideal for manufacture of machined components such as redial and axial spacers.

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The company focus on the international market and 95% of the annual sales volume is for exporting. Customers of Hecheng/Haotai insulation materials cover countries all over the world. Leading brands producing motors or dry transformers or oil-immersed transformers come and seek cooperation with Hecheng /Haotai. We sucessfully won qualified supplier certificate from the leading brands such as CG, ABB, HYOSUNG, HYUNDAI, LG and more.



Welcome to contact Haotai, which is one of best insulating press board manufacturers and suppliers in China, you can also get insulating press board free sample from our factory.

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