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Process

Grinding

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Grinding is an important process to secure straight and precise Gravure roll
Handoo Package is the sole company that adopts automatic grinding line for Gravure Roll production in Korea. Tolerance range generated in the process of operation cannot be narrowed if the measurement is made manually. Handoo Package controls roll’s external diameter within allowable tolerance range by using automatic grinding line. Also, in order to enhance the level of printing reproduction, engraving and Laser work are conducted only after completing grinding process of #6,000 (the final level of grinding) All employees and management of Handoo Package do not spare any effort to enhance quality and produce high-quality product. And we do our best to promptly respond to our customer’s need.
Grinding process
  • Copper surface grinding
    It is an important process for high-quality printing. In order to secure straightness, the process follow #800 (1st), #1,000 (2nd), #3,000 (3rd), #6,000 (4th) and buffing process.
  • Chrome grinding
    By conducting grinding with aluminum lapping film, degradation of printing resolution and line printing by Doctor Blade can be prevented in advance. It is a process under which intensity of illumination of chrome surface is improved, making printing environment suitable.
  • Precise grinding
    SFM Econo is controlled with 1/1000mm unit, making cylinder’s straightness and roundness precise for its production. All processes are conducted automatically.As 1 turning, 1 measurement device and 3 grinding module are installed, it is suitable for shaft roll and general roll. With simplified process and high efficiency, precise grinding is the best solution for cutting and grinding of Gravure cylinder coated with copper.