In this study, the effect of veneer preparation process on surface roughness, wettability and adhesive bond formation between birch (Betula pendula Roth), black alder (Alnus glutinosa L.), grey alder (Alnus incana L.) and aspen (Populus tremula L.) were evaluated. It is commonly known that adhesive bond is as strong as its weakest link. However, the results of present study show, that bond strength is not always directly related to properties of weakest wood material used in bonding. The roughness (Ra) for the birch was (11.13 μm) followed by black alder (13.32 μm), grey alder (17.25 μm) and aspen (23.28 μm). The best wettability was achieved on aspen (0.3°), which was followed by grey alder (5.0°), black alder (10.7°) and birch (43.6°). The results show that bonding lower quality and density wood species with birch does not significantly decrease the bond quality as it could be expected. This study shows that the bonds between birch and low quality and density wood species were significantly stronger than bonds formed solely between these low quality and density wood species. These results also imply that in utilization of low quality wood species by veneer-based industry does not immediately require adapting and changing the current processing parameters according to lower quality wood properties, if they are used in combination with higher density and quality wood.

在本研究中，单板制备工艺对桦木 ( Betula pendula Roth)、黑桤木 ( Alnus glutinosa L.)、灰桤木 ( Alnus incana L.) 和白杨 ( Populus tremula )表面粗糙度、润湿性和粘合剂形成的影响L.) 进行了评估。众所周知，粘合剂的强度与其最薄弱的环节一样强。然而，目前的研究结果表明，粘合强度并不总是与用于粘合的最弱木材的特性直接相关。桦木的粗糙度 (Ra) 为 (11.13 μm)，其次是黑桤木 (13.32 μm)、灰桤木 (17.25 μm) 和白杨木 (23.28 μm)。白杨木 (0.3°) 的润湿性最好，其次是灰桤木 (5.0°)、黑桤木 (10.7°) 和桦木 (43.6°)。结果表明，将较低质量和密度的木材树种与桦木粘合不会像预期的那样显着降低粘合质量。该研究表明，桦木与低质量和密度木材物种之间的结合明显强于仅在这些低质量和密度木材物种之间形成的结合。