Apparatus and a method for the provision of activated indicators for product marking and a product marking

The invention relates to a method for the provision of activated temperature-sensitive and/or time-sensitive indicators for product marking. A first variant is characterized by the activation of an indicator and the subsequent application of a protective filter to the indicator, with the indicator being conveyed along an activation device and along a protective filter application unit subsequent to it in the conveying direction.A second variant is characterized by the activation of an indicator already provided with a protective filter.The invention furthermore relates to apparatus for the carrying out of the named methods as well as to a product marking which was manufactured in accordance with the methods in accordance with the invention.