DEVICE FOR DETECTING PAPER SPLICE PART OF CARDBOARD SHEET, AND DEVICE FOR PRODUCING CARDBOARD SHEET

WIPO Patent Application WO/2022/138570

A1

In a device for detecting a paper splice part of a cardboard sheet and a device for producing a cardboard sheet, the device for detecting a paper splice part of a cardboard sheet, which detects a sheet paper splice part of a cardboard sheet that has a first sheet, a corrugated second sheet, and a third sheet bonded together, comprises: a sheet paper splice detection unit that detects the sheet paper splice part on the basis of the shape of the sheet and that is placed between a position at which sheets are spliced and a position at which the sheets are bonded in a sheet carrying direction; a marking device that marks the sheet paper splice part on the downstream side of the sheet paper splice detection unit in the sheet carrying direction; and a mark detection device that detects the mark on the downstream side of the marking device in the sheet carrying direction.

WO/1994/003325	SELF-CENTERING LAMINATED PROCESS FOR CORRUGATED CONTAINERS AND BLANK THEREFOR
JP3246750	Description: A method of bending and sealing the edges of a web of continuous material.
WO/2015/076061	SHEET MEMBER CONNECTING STRUCTURE AND PACKING CONTAINER

NITTA TAKASHI (JP)
TAKEMOTO SHUICHI (JP)
KAWASE JUNICHI (JP)
MIZUSHIMA KAZUKI (JP)

PCT/JP2021/047052

June 30, 2022

December 20, 2021

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MITSUBISHI HEAVY IND MACH SYSTEMS LTD (JP)

B31F5/00; B65H21/00; B65H26/02

JP2018002341A	2018-01-11
JP2010105772A	2010-05-13
JP2009113895A	2009-05-28
JP2009045910A	2009-03-05
JP2013202916A	2013-10-07
US4901577A	1990-02-20
JP2018002341A	2018-01-11

SAKAI INTERNATIONAL PATENT OFFICE (JP)

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