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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.

