Patent ID: 9637817
Date: 2017-05-02
CPC Classifications: C23C

Claim:
1. A process roller for receiving and guiding substrates in strip form in vacuum coating installations comprising an interior space ( 18 ), a radiant heater ( 8 ) that is elongated and completely enclosed within the interior space of the process roller, and also a cylindrical lateral surface for receiving a substrate in strip form, the process roller being mounted rotatably about an axis of rotation ( 12 ) in a vacuum process chamber, wherein the process roller ( 2 ) is configured in a vacuum-tight manner, in that the cylindrical lateral surface ( 3 ) of the process roller ( 2 ) is connected in a vacuum-tight manner to two end caps ( 4 , 5 ), which have a curved form that is outwardly curved along the axis of rotation ( 12 ) and define interior volumes ( 17 ), the interior space of the process roller is defined by the interior volumes of the end caps and an interior volume of the cylindrical lateral surface, a supporting tube ( 11 ) is arranged coaxially with the axis of rotation ( 12 ) of the process roller ( 2 ) and is connected to one of the end caps ( 4 , 5 ), the interior space of the process roller ( 2 ) is hermetically sealed and connected to a vacuum connection ( 6 ) through the supporting tube ( 11 ) to generate a vacuum in the interior space, a rod-shaped holding device ( 14 ) extends through the supporting tube ( 11 ) and into the process roller ( 2 ), and the radiant heater ( 8 ) is fastened to the rod-shaped holding device ( 14 ) and extends into and between the interior volumes ( 17 ) of the end caps ( 4 , 5 ).