Protective casing for e.g. passport, has outer layer made from foil of plastic, and adhesive layer formed on outer layer, where adhesive layer connects outer layer with metal foil that is cast with thin layer made of lubricated material

摘要

The casing has an outer layer (7) made from a foil of flexible plastic e.g. Tyvek(RTM: flashspun high-density polyethylene fiber), and an adhesive layer (8) formed on the outer layer. The adhesive layer connects the outer layer with a metal foil (9), where the metal foil is laminarly cast with a thin inner layer (11) made from lubricated material e.g. paper foil or Tritex(RTM: not defined). The metal foil is made of aluminum or copper, and an interference unit i.e. radio frequency identification transponder, is arranged between the outer and adhesive layers.