Transformer insulating cardboard is refined from insulating grade unbleached sulfate wood pulp and has the advantages of high mechanical and electrical strength, good tensile strength, good elongation, low compressibility and good bending performance. Good performance makes the product widely used in power transmission and transformation equipment such as transformers, reactors, and mutual inductors. ?

Product advantages

High mechanical and electrical strength.

The thickness, density and moisture content of cardboard are uniform and stable, with good elongation and good flatness.

Good flexibility and strong applicability.

Small shrinkage.

The basis weight difference of the single-layer wet paper sheet is ≤±1.5.

Can continuously produce 8mm thick transformer insulation cardboard

Quality Commitment

The main quality indicators of the product are better than IEC60641-3-1 standard 5.

The production process is controlled by DCS to ensure stable quality.

The insulation parts produced are dimensionally stable and reliable.

The testing and experimental equipment are advanced and complete.

Advanced and complete testing equipment

All testing items are tested according to the requirements of the inspection specifications

A full set of experimental equipment realizes fiber microstructure analysis, beating and copying Complete simulation of paper, pressing, drying, forming, testing and other processes. The paper tube base paper produced by the company has been widely used in high-strength chemical fiber tubes, textile yarn tubes, industrial paper tubes for papermaking, paper tubes for plastic films, etc. The product quality indicators are stable, and the interlayer bonding strength, ring pressure strength and usability performance have all reached international standards, and can completely replace the use of high-end imported paper tube base paper. At the same time, we can provide segmented products completely according to customer needs.

Stable quality

The products comply with ISO9001 international quality system certification.

The quality is leading in the country and it is the preferred supplier for well-known domestic and foreign enterprises.

The fluctuation range of cardboard thickness, gram weight and moisture index is small, and the inner and outer diameter and weight of the tube are accurate and stable.

The interlayer bonding, water absorption and ring pressure strength indicators of cardboard are uniform and stable, and the tube compressive strength is good.

Cardboard absorbs glue stably, has high bonding strength into tubes, low cardboard loss and high utilization rate.

Able to stably produce F800 and F1000, the highest grade domestic paper tube base paper.

Adopt advanced technology and hire foreign paper tube and base paper experts to manage production on site.

Adopt advanced online moisture and quantitative control system.

The quality testing equipment is advanced and complete.

Excellence

It is the largest professional manufacturer of paper tube base paper in China.

The registered trademark "Phoenix Tree" of paper tube base paper was rated as a famous trademark of Shandong Province in October 2008, which is the highest honor for product trademarks in the same industry in China.

Produces B-grade, F200, F300, F400, F500, F600, F700, F800, F1000 and FB300, FB500 and other series of paper tube base papers with complete varieties.

We can provide products with high or low tightness and other special needs according to customer needs, fully meeting the needs of different paper tube industries.

Leading the industry in providing segmented products.

Product Application

Production of high-end high-speed POY, FDY, DTY, HOY paper tubes and spandex paper tubes and other high-strength chemical fiber paper tubes;

Production Seamless paper tubes for rolling copper foil and plastic films;

Industrial tubes for making plastic sheets and fiberglass cloth, high-strength paper tubes for high-speed newsprint machines and other paper machines, etc.

Standard specifications

Quantitative range: 200-600 g/m2

Thickness range: 0.3-0.8 mm

Grade: B , F200, F300, F400, F500, F600, F700, F800, F1000, FB300, FB500