Abstract: The invention relates to a security element for application to a surface of a valuable document or at least partial embedding into a substrate of the valuable document, for example a banknote or a passport, wherein the security element consists of a plastics film. According to the invention, at least one printing ink which is transparent in the infrared wavelength range of electromagnetic radiation (referred to hereinafter as IR-transparent printing ink) and has a first reflectance value and at least one printing ink which is absorbent in the infrared wavelength range of electromagnetic radiation (referred to hereinafter as IR-absorbing printing ink) and has a second reflectance value are applied to the plastics film of the security element, the separation between the first and second reflectance values being at least 40%.

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.

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.

Abstract: The present invention relates to multi-ply security paper for manufacturing security or value documents, such as banknotes, identification cards and the like. Into a first paper ply (52) is introduced an endless security element (54) that is freely accessible on at least one side of the paper ply (52). The first paper ply (52) is covered on the freely accessible side of the security element (54) by a second paper ply (56), and the second paper ply (56) exhibits one or more openings (58) in the region of the security element (54).