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Razor blade

Razor blades are in many cases formed by a process involving heat treating and sharpening a continuous strip of perforated blade steel, and then breaking the strip into segments of the desired blade length. The resulting blades are then stacked on a spindle for further treatment, e.g., treating the blade edges with coatings to enhance durability and/or lubricity. Razor blades are typically made from a continuous strip of stock material that is hardened and sharpened while the strip travels along a processing line. The strip is then divided in blade length sections used in manufacture of individual cartridges. Razor blades have been mounted in shaving systems for wet shaving using a variety of techniques. Many shaving systems include flexible blades, which require support along their length. Hard coatings such as diamond, amorphous diamond, diamond-like carbon (DLC) material, nitrides, carbides, oxides or ceramics are often used to improve strength, corrosion resistance and shaving ability, maintaining needed strength while permitting thinner edges with lower cutting forces to be used. Polytetrafluoroethylene (PTFE) outer layer can be used to provide friction reduction. Single-edge razor blades are commonly used in a wide variety of environments. For example, such single-edge blades are commonly applied to a blade holder and used as a scraper.

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