Method for manufacturing a security paper

Details Method for manufacturing a security paper Method for manufacturing a security paper

2006-07-03

2011-12-27

Fortuna, Jose A (Department: 1741)

Paper making and fiber liberation

Processes and products

Safety, identification and fraud preventing paper

C162S103000, C162S109000, C162S110000

Reexamination Certificate

active

08083894

ABSTRACT:
The present invention relates to a method for manufacturing a security paper, for security or value documents, that exhibits at least one through opening (12) having characteristic irregularities (14) in the edge region. According to the present invention, a paper web having thin sites in the form of the outline of the desired shape of the at least one through opening (12) is formed on a paper mold, and the paper web dewatered after sheet formation, the region delimited by the thin sites being removed from the paper web by the occurring forces.

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