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TECHNOLOGY 41
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The researchers followed specific standards, such as TS
4539 for testing the withdrawal strength and ASTM D1037
for setting the loading rate during the tests, ensuring the
consistency and reliability of the methodology.

The results showed that the face direction in MDF had the
highest withdrawal strength, D-VTKA adhesive outperformed
PVAC adhesive in terms of withdrawal strength, and MDF a tensile load perpendicular to the veneering surface using
showed better results than particleboard owing to its higher a T-shaped steel body attached to the edge material by a
density and more homogeneous structure. cyanoacrylate adhesive to evenly spread the tensile forces.
Similar to the previous two papers, Karaman tested dowels The author found that not all materials worked in the
made from five different types of wood—beech, Scots pine, same way; therefore, he had to adjust the glue temperature
Turkish fir, chestnut, and olive—to see how well they worked and pressure to obtain the best stickiness. For example,
when used in particleboards for furniture making. melamine foil requires higher pressure when the glue is hotter,

PVC edgebanding with thicknesses of 0.8 mm, one mm, and PVC materials work best at a specific temperature and
and two mm was used to understand its impact on the strength lower pressure.
of the dowel joints in the particleboard by using two types Kubit et al. wanted to understand whether increasing
of water-resistant adhesives: polyvinyl acetate (PVAC-D4) and the thickness of the glue layer at certain points could help
polyurethane (PUR-D4). absorb more energy and reduce the risk of joint breakage
The study found that dowels made from beech wood under repeated use, which is crucial for industries that require
and bonded with polyurethane adhesive showed the highest lightweight and strong connections.

strength, while PVC edgebanding with a thickness of 0.8 mm This study explored how making small changes to the
significantly increased the strength of the dowel joints compared edges of the parts being glued together can significantly
to other thicknesses, indicating that thinner edgebanding improve how long and well they hold up under repeated use.
performs better in this application. Specifically, it looks at adding a slant (chamfer) or rounded
Merdzhanov optimised the edgebanding process by edge (fillet) to the part where the glue is applied, aiming to
developing mathematical models and a computerised program make the glue layer thicker in spots where stress is high,
that could predict the best settings for different materials, which helps the joint last longer and perform better under
ensuring that the adhesive layer was minimal and the bond fatigue or repeated stress.
strength was maximised under varying conditions. Researchers have conducted tests using a special machine

This study aimed to understand how well different types that shakes parts at a specific frequency to mimic the stress
of edgebanding materials stick to particleboards when using of repeated use. They found that these small changes,
a specific hot-melt adhesive, focusing on determining the best especially the rounded edge, greatly increased the strength
conditions for a strong bond by examining various factors and lifetime of the glued joints under stress, showing a notable
such as the glue amount, temperature, and pressure applied improvement in how the glue absorbs energy and handles
during the process. stress without breaking.
This study tested three types of edgebanding materials on The best improvement was observed with a rounded edge

particleboards: beech veneer edge strips, melamine edge foil, (fillet R2), which made the glued joint last over three times
and PVC edge foil. The adhesive compound was applied with longer and increased its strength by 33.1 percent compared