We offer you premium quality mill press boards for applications in electrical and mechanical appliances. Our press boards are made from natural fibers such as cotton, jute, bamboo, etc. Usually on an intermittent board machine and afterwards, it is subjected to pressure to remove excess water so that they consolidate the piles and close up the material, thus producing the boards. The boards are then dried and calendared. We manufacture Type C as per IS 1576:1992 specifications.
Classification of mill press boards
Type A- used in refrigeration coolants
Type B- used in electrical and mechanical medium, in air or in oil
Type C -used in electrical medium in air and in oil
Type D- used in mechanical medium in air and in oil
Description of boards
Soft porous untreated press boards with oil absorption greater than type B and D. It has good electrical properties in oil and is intended primarily for use in electrical medium. This type is usually made from a mixture of cotton and other fibers such as jute and wood pulp.
Properties and typical values (IS1576-1992)
- Color Blue
- Density range in gm/cc 0.90-1.10
- Tensile strength minimum in kg sq.
- MD/CD 500/250 3.0 mm 658/341
- Shrinkage max % in air
- MD 1.0
- CD 1.5
- PD 4.0
- 0.5
- 1.0
- 2.3
- Moisture Content max % 8 % 5.2
- Ash content max %2% 0.7
- Conductivity of aqueous extract, micho homs /cm max 70/62
- pH of Aqueous extract, range 7.0-9.5
- Oil absorption, min (%) 20%
- Standard Thickness of Board 1.0, 1.5, 2.0, & 3.O mm
- Standard sheet size (in mm) Width length 850 X 1450
- Tolerances On Thickness Up to 1.5 mm +- 7.5 % 1.2 mm -5.0 mm +- 5.0
