Patent ID: 8720951

Claim:
A process for producing a film element having mutually registered metallic layers, wherein a first metallic layer provided on a first surface of a flexible single-layer or multi-layer carrier film and a masking layer provided on the second surface of the carrier film, that is opposite to the first surface, are structured in accurate register relationship with each other by means of mutually synchronized structuring, after structuring of the first metallic layer and the masking layer one or more further layers are applied to the first metallic layer, a second metallic layer is applied to the one or more further layers, a first photoactivatable layer is applied to the second metallic layer, and the first photoactivatable layer is structured by trans-exposure through the masking layer, the first metallic layer, the one or more further layers and the second metallic layer from the side of the masking layer by means of electromagnetic radiation of a wavelength to which the first photoactivatable layer is sensitive, wherein the thickness and the material of the masking layer and the first metallic layer are so selected that the ratio of the degrees of transmission of the masking layer and the first metallic layer at the wavelength of the electromagnetic radiation used for the trans-exposure step is greater than 1:10.