Patent ID: 7476493

Claim:
An illuminating station for the manufacture of partially designed areas in one or more layers of a web of sheeting, comprising one or more radiation sources for illuminating said web of sheeting; a masking tape having partially designed areas showing different optical properties; and two or more guide means for guiding said masking tape and/or for guiding said web of sheeting, these being disposed such that said masking tape is guided through an illuminating zone in the path of radiation between said one or more radiation sources and said web of sheeting, and said illuminating station has coupling means for causing said masking tape to travel through said illuminating zone at the same speed as that of said web of sheeting, wherein said masking tape has a base layer of a material which is permeable to the radiation of said one or more radiation sources, and wherein said masking tape has at least one of a) partially designed areas showing different optical refractive indices, b) partially designed areas showing different polarization properties, and c) partially designed areas showing different reflective properties.