Abstract: Although European standards were developed to determine the stable state formaldehyde emission, they are rather costly and time consuming. This paper presents a new proposal regarding the study of the stable state formaldehyde emission for plywood by a modified flask method, which has the advantage of being rapid and cheap. Tests were conducted at a temperature of 60 C degre in order to speed the formaldehyde emission, value which was inspired from the gas analysis method in SR EN 717-2/ 1995. The methodology from the flask method was adapted for cycling testing with a cumulated length of time of maximum 172 hours found sufficient to reach a stable state formaldehyde emission. For the specimens, there were used not not only the type recommended in EN 717-3/1996, but also a new configuration, VA, proposed by the authors, which enhances the formaldehyde release through all specimen faces and edges. Experimental research was performed on 4, 8 and 12 mm beech plywood for interior use in dry condition, glued with urea-melamine-formaldehyde resin. Based on the experimentalresults it was established a general theoretical equation of the formaldehyde emission with time. to check the stable state it was used a threshold condition from the chamber method in SR EN 717-1/2005. The RELIABILITY OF THE METHOD WAS TESTED AND WORKED well for various plywood thicknesses. The methodology proposed may be regarded as a challenge in this field, because invites to further improvement of existing standard methods or developmrnt of new ones.

Brief Biography of the Speaker:
-Professor dr eng at Transilvania University of Brasov, Romania, Faculty of Wood Industry
-33 years teaching experience in the field of Wood processing
-Wood Machining Center of Excellence founder ( president from 2002 to present)
-Coordinated 5 successful national projects and acted as a collaborator in other 40 national and international research projects (LdV, CEEPUS, FP6, FP7);
-At present coordinator in National Programme Researches „Modelling to Sustainable Promotion of Wooden Products and Technologies with Impact on the Quality Environment.” The project aims to create and consolidate a package of procedures destined to reduce the entropic pressure over a basic component of the environment in the same time suggesting a model for eco-socio and economical sustainability. - author of 120 papers published at national and international level, unique author for six books.