Method for detecting impurities on a surface

US8363213B2 · kind B2 · utility

Assignees

• Robert Bosch GmbH · DE
• BASF SE

Inventors

• Eva Wagner · Bad Dürkheim, DE
• Thomas Brinz · Bissingen, DE
• Thomas Geiger · Regensburg, DE
• Jane Lewis · Wales, GB
• Markus Tiefenbacher · Fellbach, DE
• Tobias Burk · Lörrach, DE
• Sebastian Koltzenburg · Dannstadt, DE
• Wolfgang Schrof · Neuleiningen, DE

Key dates

• Filing date: Sep 11, 2007
• Grant date: Jan 29, 2013
• Expiry date: Jun 17, 2029

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N2001/2833
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method is provided for detecting not fully set coatings and liquid or smearing impurities on a surface, in which in a first step a film is pressed onto a surface of a coating using a predefined press-on pressure, the film having a relative motion with respect to the surface of the coating, thereafter the film is pulled off the surface of the coating and finally it is determined whether impurities are adhering to the film. A device is also provided for performing the method, including at least one film, which may be pressed against a surface to be tested, at least one press-on roller having a surface by which the film is pressed against the coating, and at least one device for determining whether there are impurities adhering to the film.