公开(公告)号：EP3817928A1

公开(公告)日：2021-05-12

申请号：EP19829831.7

申请日：2019-07-03

申请人： Crane & Co., Inc.

发明人： PRETT, Giles D. ,  BRIGHAM, Kraig M. ,  JAIN, Manish

IPC分类号： B42D25/346 ,  B42D25/29 ,  B42D25/30

公开(公告)号：EP3256642A1

公开(公告)日：2017-12-20

申请号：EP16710036.1

申请日：2016-02-11

申请人： Crane & Co., Inc.

发明人： PRETT, Giles D. ,  JAIN, Manish ,  BRIGHAM, Kraig M.

IPC分类号： D21H21/40 ,  D21H21/48

CPC分类号： B42D25/24 ,  B42D25/29 ,  B42D25/333 ,  B42D25/48 ,  D21H21/40 ,  D21H21/42 ,  D21H21/48

摘要： A method for applying a security device (e.g., a micro-optic security thread) to a fibrous web during manufacture is provided. By way of the inventive method, the security device is preferably applied onto the fibrous web at or near a couch roll or similar tool of a paper machine when the fibrous web constitutes a sufficiently consolidated, fully formed wet web. Papers made in accordance with the inventive method, when subjected to the Circulation Simulation Test, showed minimal damage at the paper/security device interface. Moreover, the surface-applied security devices showed acceptable levels of intaglio ink adhesion, and the papers had higher cross-direction (CD) tensile strength and much less show-through on opposing sides thereof.