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Title: Estimating the spread rate of urea formaldehyde adhesive on birch (Betula pendula Roth) veneer using fluorescence

Source: Eur. J. Wood Prod. Volume 73, 2015; pp. 69–75.

Author(s)Antikainen, Toni; Rohumaa, Anti; Hunt, Christopher G.; Levirinne, Mari; Hughes, Mark

Publication Year: 2015  View PDF »

Category: Journal Articles
Associated Research Project(s):   FPL-4707-2B

Abstract: In plywood production, human operators find it difficult to precisely monitor the spread rate of adhesive in real-time. In this study, macroscopic fluorescence was used to estimate spread rate (SR) of urea formaldehyde adhesive on birch (Betula pendula Roth) veneer. This method could be an option when developing automated real-time SR measurement for plywood or processes. Estimation of SR was shown where adhesive was spread uniformly and also where adhesive was spread as lines. For uniform spreading, average intensity of the fluorescence image predicted the SR of adhesive well, with an R2 of 0.97 and root mean square error (RMSE) of 13 g m-2. For line-spread adhesive, line average intensity and width were used to estimate SR, and all these features predicted SR well. Furthermore, adhesive penetration into veneer over time could be detected from fluorescence images taken over time.

Keywords: Adhesive; plywood; spread rate; fluorescence; automation

Publication Review Process: Formally Refereed

Date posted: 04/01/2015

This publication is also viewable on Treesearch:  view
RITS Product ID: 72554
Current FPL Scientist associated with this product
Hunt, Christopher G.
Research Chemist

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