Kraft
Cottrell Kraft- This material is made from 100% virgin fiber electrical Kraft pulp. The stock is extensively cleaned and specially refined to ensure maximum purity and physical strength. No sizing, clay, fillers, or other chemical additives are used. The absence of impurities ensures that the aging characteristics meet the most exacting requirements.
Our Kraft’s are produced on a multi-ply cylinder machine, this technique allows for more bonds to form along the surface areas between plies in addition to fiber-to-fiber bonding in the machine direction. The resultant product exhibits outstanding physical strengths, which includes excellent elongation, which allows the paper to stretch without breaking. This proves especially beneficial in the fabrication of the .030” to .125” thickness, where the material must be rigid while still maintaining sufficient elongation to avoid tearing at the folds.
Cottrell Kraft is widely used for coil winding, barrier, core and layer insulation in transformers. It is also used in motors and other electrical applications where high dielectric and physical strengths are required
Kraft is available from .002″ to .125″ in rolls, sheets, or coils slit to your specifications.
