公开(公告)号：US20210372774A1

公开(公告)日：2021-12-02

申请号：US17314085

申请日：2021-05-07

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： YASUHIRO KABETANI ,  KOYA HOMMA

IPC: G01B11/06 ,  B65H18/16 ,  B05C1/08 ,  B05C11/00

Abstract: The present disclosure is a sheet producing device for producing a multi-layer sheet by applying a coating material to a sheet material. The sheet producing device includes a radiation light source that emits radiation light, a division part that divides the radiation light into measurement light to be incident on the multi-layer sheet and reference light with which a reference surface is to be irradiated, and an optical member that emits the measurement light onto the multi-layer sheet and receives the measurement light reflected by the multi-layer sheet. An interference detector that detects interference light between the measurement light reflected by the multi-layer sheet and the reference light reflected by the reference surface, and a thickness calculator that calculates a thickness of the sheet material and a thickness of the coating material of the multi-layer sheet based on the detected interference light are further included. As a result, the tact time from the production of the multi-layer sheet to the calculation of the thickness can be shortened.