Title:
DEVICE FOR THE CONTACT-LESS DETECTION OF THE DEGREE OF DRYNESS OF A COAT OF VARNISH, AND METHOD FOR THE SAME
Document Type and Number:
WIPO Patent Application WO/2010/015475
Kind Code:
A4
Abstract:
The invention relates to a device (1) for the contact-less, and therefore non-destructive, measurement of the degree of dryness of a coat of varnish (5) applied onto a substrate (4). According to the invention the device comprises a transmitter (2) for electromagnetic radiation, at least one receiver (7) for detecting the absorption of the electromagnetic radiation radiated into the coat of varnish (5), and a measuring device (8). The processing of the raw measurement values measured by the transmitter (7), and the visualization of the degree of dryness of the coat of varnish (5) calculated from the raw values are carried out in the measuring device (8). Either microwave radiation or infrared radiation in the near infrared region may be utilized as the measurement radiation, wherein in both cases at least one time-dependent measurement of the absorption A(t) is carried out at a constant wavelength λ. A drying unit configured using infrared emitters may be automatically switched by means of a controller and regulating unit (9) upon reaching a pre-selected degree of dryness. By measuring the degree of dryness the switching off is carried out at high accuracy regardless of any environmental influences and varying varnish compositions, leading to very good reproducible and high-quality varnishing results. The invention further relates to a method for the detection of the degree of dryness of a coat of varnish (5) by means of a device (1) utilizing infrared radiation in the near infrared region, or utilizing microwaves.
Inventors:
BENSE ROLF (DE)
SIEWERT REBECCA (DE)
SIEWERT REBECCA (DE)
Application Number:
PCT/EP2009/058627
Publication Date:
June 03, 2010
Filing Date:
July 07, 2009
Export Citation:
Assignee:
AIRBUS OPERATIONS GMBH (DE)
BENSE ROLF (DE)
SIEWERT REBECCA (DE)
BENSE ROLF (DE)
SIEWERT REBECCA (DE)
International Classes:
F26B25/22; C08J3/24; G01N21/35; G01N22/00; G01N22/04; G01N33/32
Attorney, Agent or Firm:
PECKMANN, Ralf (Skuhra Weise & Partner Gb, Friedrichstrasse 31 München, DE)
Download PDF: