Title:
紙または板紙に識別記号を形成する方法および該方法により記号を付された材料
Document Type and Number:
Japanese Patent JP5068078
Kind Code:
B2
Abstract:
The invention comprises a method for producing identification marks (5) on layer-structured paper or board (7) to be manufactured in a continuous web and the marked papers and boards obtained with this method. With this method, the marks (5) are made with a laser beam on a moving web form fiber layer (1), on which a second layer of material (6) is subsequently overlaid in such a way that the marks remain inside the layer-structure of the moving web. The second material layer (6) may comprise a second fiber layer or, for example, a polymer coating. The laser marking takes place by engraving the surface of the fiber layer (1). Inside the layer structure, the marks (5) are protected, but detectable with a detector to ensure the authenticity of the material. The marked paper or board is suitable for product packages to be protected against product forgeries.
Inventors:
Nina Miikki
Theve, Elkki
Resenen, Spear
Theve, Elkki
Resenen, Spear
Application Number:
JP2006546213A
Publication Date:
November 07, 2012
Filing Date:
January 04, 2005
Export Citation:
Assignee:
STORA ENSO OYJ
International Classes:
B32B29/00; B23K26/00; B41J2/44; B41M5/24; B41M7/00; D21H25/04; D21H27/02; D21H27/30; B41M5/26; D21H21/40; D21H25/00; D21H27/38
Domestic Patent References:
| JP2003013395A | ||||
| JP10236000A | ||||
| JP2263582A | ||||
| JP11100796A |
Attorney, Agent or Firm:
Okabe
Masao Okabe
Nobuaki Kato
Shinichi Usui
Ikuo Fujino
Takao Ochi
Teruhisa Motomiya
Norimichi Takanashi
Tsuneo Kobayashi
Masami Saito
Katsuhiko Kimura
Masao Okabe
Nobuaki Kato
Shinichi Usui
Ikuo Fujino
Takao Ochi
Teruhisa Motomiya
Norimichi Takanashi
Tsuneo Kobayashi
Masami Saito
Katsuhiko Kimura