MANUFACTURING METHOD OF MIDDLE CORE AND CORRUGATED BOARD

• Main Author: HIRAI NOBUAKI
• Format: Patent
• Language: English; Japanese
• Published: 17.01.2019
• Subjects: MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNERANALOGOUS TO PAPER; MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD ORMATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; PERFORMING OPERATIONS; TRANSPORTING; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUSTO PAPER

To provide a manufacturing method of a middle core, capable of easily and securely forming steps tilted toward the crosswise direction of a middle core base paper.SOLUTION: The manufacturing method of a middle core having steps tilted toward the crosswise direction contains: inserting a middle core base paper between a gap of a first roller 10 provided with spiral projections 11 on its outer peripheral surface and a second roller 20 provided with spiral grooves 22 on its outer peripheral surface; and sandwiching the middle core base paper with the projections 11 and grooves 22, wherein the first roller 10 and the second roller 20 are subjected to synchronous rotation driving in the opposite directions.SELECTED DRAWING: Figure 1 【課題】中芯原紙の幅方向に対して傾斜する段を容易且つ確実に形成することができる中芯の製造方法を提供する。【解決手段】中芯原紙を、外周面に螺旋状の突条１１が形成された第１のローラ１０と、外周面に螺旋状の溝２２が形成された第２のローラ２０との隙間に挿入して、突条１１および溝２２により挟み込むことにより、幅方向に対して傾斜した段を有する中芯を製造する方法であって、第１ローラ１０および第２ローラ２０を、互いに逆方向に同期回転駆動する。【選択図】図１