On the measurement of formaldehyde release from low-emission wood-based panels using the perforator method |
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Authors: | E Roffael B Johnsson B Engström |
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Institution: | 1. Georg-August-Universit?t G?ttingen, Büsgenweg 1, 37077, G?ttingen, Germany 2. Casco Adhesives AB, P O Box 13000, SE-85013, Sundsvall, Sweden 3. Casco Adhesives AB, P O Box 11538, SE-10061, Stockholm, Sweden
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Abstract: | In Europe, the perforator method (EN 120) is the mostly used laboratory method of the wood-based panel industry. Usually,
the measured perforator value depends on the moisture content of the boards. According to DIBt-100, the measured perforator
values are corrected to a common moisture content (MC) of 6.5% using an established equation proposed by Jann and Deppe (1990). The correction factor of Jann and Deppe (1990) is based on the assumption that particle- and fibreboards change their perforator values to the same extent regardless whether
increasing or decreasing the moisture content in the range of 3 ≤ u ≤ 9%. Application of this correction factor to particle- and fibreboards of higher moisture content than 6.5% can lead to
biased corrected results in favour of low emission. The corrected values can also lead to paradoxical relation between the
perforator values and emission in the low-emission region. |
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Keywords: | |
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