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






            Overall, edgebanding not only enhances the visual appeal   importance of using edgebanding on corner joints to increase
          of furniture but also ensures its durability and longevity.  the strength, visual aesthetics, protection, and structural integrity
            Studies have specifically examined the effects of adhesives,   of furniture made of wooden panels, especially particleboards.
          wood species, and modifications on the withdrawal strength   The purpose of the analysis of previous research was to

          and durability of dowels and their interactions with wood   unify the knowledge and set parameters for further research
          composite materials.                               on  the  quality  of  corner  joints  and  edgebands  on  wooden
            Research includes the impact of dowel materials, diameter,   panels and furniture made of particleboards.
          and direction of withdrawal strength, particularly the withdrawal   Also, this study represents the first phase of research within the
          strength  from  the  faces  and  edges  of  materials,  such  as   project “The role of edge covering in the aesthetic and technical
          MDF and particleboard, highlighting the influence of material   improvement of panel furniture”, which is carried out at the Faculty
          properties and manufacturing processes.            of Forestry and Wood Technology University of Zagreb, funded
            The polyurethane adhesive (PUR-D4) demonstrated a higher   by the Ministry of Science and Education, Republic of Croatia.
          embedded strength than polyvinyl acetate (PVAC-D4), with PUR-D4

          expanding to fill gaps and enhance mechanical adhesion.   Common Corner Joints
            According to  the  above-mentioned  papers,  respecting   Several types of corner joints are commonly used in furniture
          the mutual differences of the experiments, beech dowels   construction, such as dowel joints, biscuit joints, confirmat
          exhibited the highest embedded strength, attributed to the   screw joints, and cam lock joints.
          density  and  structural  properties  of  the  wood, while  Scots   The type of joint, such as dowel joints, and factors such
          pine dowels showed lower strength due to their lower density   as dowel size and edgebanding thickness are crucial for
          and structural characteristics.                    furniture strength.

            The thickness of PVC edgebanding significantly influenced   Dowel joints connect elements with wooden dowels and
          embedded strength, with 0.8 mm thickness showing superior   glue to provide a strong and durable joint. A biscuit joint is
          performance over one mm and two mm thicknesses, suggesting   a type of joinery technique that involves connecting furniture
          that thinner edgebanding may provide better adhesion and   elements with oval-shaped solid beech wood biscuits inserted in
          mechanical strength.                               slots and glued with the ability to create strong, invisible joints.
            This study aims to review previous research and highlight the   Confirmat screw joints using specialised screws were inserted
                                                             into the pre-drilled holes to provide a secure connection. Each
                                                             type of joint has advantages and considerations, such as the
                                                             materials being joined, the desired strength and durability,

                                                             and the aesthetic preferences of the furniture manufacturer.
                                                                The factors known to influence corner joint strength include
                                                             the type of joint, adhesive used, and base material. Different
                                                             types of joints, such as single-dowel, double-gluing, and grooved-
                                                             dowel joints, can significantly affect the strength of the joints.
                                                                The use of proper adhesives and gluing techniques can
                                                             improve the nominal strength of joints. Thoroughly covering

                                                             the walls of dowel holes with adhesives is important for
                                                             maximising connection strength.
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