发明授权
US07815822B2 Forming sheet, lenticular lens sheet production method, and their production apparatus 有权
成型片,双凸透镜片的制造方法及其制造装置

Forming sheet, lenticular lens sheet production method, and their production apparatus
摘要:
A method and an apparatus for producing a pattern forming sheet efficiently. The method and apparatus for producing a sheet having a first pattern formed on at least one side by a first roll forming die and a second pattern formed by a second roll forming die is characterized in that the rotational angular speeds of the first and second roll forming dies are substantially equalized and relative positional variation of the first and second patterns is substantially minimized by synchronizing the phases of the periodic positional variation caused by the rotation of the rolls.
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