Cutting Nozzle
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There are two main methods of die cutting—rotary die cutting and steel rule die cutting. Rotary die cutting, which is also called gasket die cutting because it’s the main method for producing gaskets, cut flat pieces of material by forcing it between sharp blades on a cylindrical die and a hard cylindrical anvil on a rotary press. It is a continuous process that unwinds the material sheets and pushes it through 2 rolling calendar dies. This process offers high repeatability, with tolerances as close as .02" because the material is continuously fed instead of hand fed, which prevents error. Steel rule dies, or clicker dies, are die cutting machines that feed the material in batches instead of continuously. It is considered the most common approach, and can produce the most complex and intricate designs. These methods are older, and with the introduction of laser cutting, are slowly phasing out of popularity.