Page 41 - FDMAsia NovDec 2024
P. 41

TECHNOLOGY           39
         www.fdmasia.com | FDM ASIA NOV/DEC 2024




          load-bearing capacity than cabinets made of uncoated MDF   standard test method.
          without edgebands.                                    The thickness of the lamination material is another critical
            The type of edgebanding material used also has a significant   factor, as it was hypothesised to influence the strength and
          impact on the strength of the corner joints, with melamine   quality of the furniture. Their research indicated that a thicker

          edgebanding material providing the highest diagonal tension   edgeband (i.e., 2 mm oak veneer) could potentially enhance
          and compression strength.                          the strength and quality of the furniture, as well as improve
            During the testing of the edge bonding quality (EN ISO   its resistance to peeling forces.
          4624:2017), several factors were considered: the squareness   Static analysis showed that the probability of deformation
          of wood-based panels after processing by pre-cutters, position   of furniture boards/elements decreased with thicker lamination,
          of the glue application roller, and angular deviation of the edge   suggesting that thicker edges adhered more strongly to the
          to the wider side of the panel.                    particleboard.
            The properties of the particleboard (density, moisture content,   Additionally, thermal analysis revealed that the two mm thick
          and delamination strength of the layers) were considered but   ABS edge was the most heat-resistant, while the one mm thick

          were not directly investigated. The influence of glue parameters,   oak veneer edge retained the most heat, indicating that the
          including the glue temperature and method of application,   thickness also affected the thermal properties of the materials.
          was found to affect the bonding quality.              This research also highlights the importance of considering
            The research indicated that the optimal glue temperature   the elasticity of lamination materials, especially for curved
          for the EVA adhesive used in this study was 210 deg C, with   parts, where ABS’s higher modulus of elasticity could reduce
          an application quantity of 110 g/sqm and a feed speed of   lamination issues.
          15 m/min. The gluing parameters were controlled using an   The findings of Lyu et al. have significant practical

          automatic edgebanding machine.                     implications for the furniture manufacturing industry, particularly
            Variations in these parameters can lead to changes in the   for small- and medium-sized enterprises specialising in panel
          bonding strength, with the highest strength observed in the   furniture with curved edges. The optimal technical parameters
          samples  with  the  smallest  angular  deviation  from  the  edge   were identified: temperature of applying EVA glue at 140–150
          to the wider side of the panel.                    deg C, glue dosage of 363–379 g/sqm, feed rate of 13–15
            The study also highlighted that the properties of the glue,   m/min—can be directly applied to improve the peel strength
          such as its ability to fill gaps, are crucial, as evidenced by the   of PVC edgebands, thereby enhancing product durability and
          performance of EVA glues in accommodating a gap created   reducing failure rates during use.
          by a two-degree slope.                                This study also highlights the importance of maintaining

            The study utilised SolidWorks simulation for both static and   these parameters  within  specific  ranges  to  avoid issues
          thermal analysis, applying mathematical finite element method   such as insufficient peel strength due to premature drying of
          (FEM) virtual modeling to assess the mechanical properties   the adhesive or inadequate pressure application, which are
          of ABS and oak veneer lamination materials, suggesting that   critical for ensuring the quality and longevity of edge-banded
          oak veneer edges offer superior mechanical properties and   furniture components.
          adhesion to particleboard compared to ABS edges.      This study is structured into three separate experiments, each
            During the peel-off testing phase (EN 28510-1:2014),   focusing on one of these factors. The glue dosage was carefully

          researchers considered mechanical properties, such as   measured to balance between sufficient bond strength and the
          resistance to peeling forces, which were evaluated using a   avoidance of quality issues, such as glue line and glue stain.
   36   37   38   39   40   41   42   43   44   45   46