TITLE:
Radio Frequency Gluing Technique for Wood-to-Wood Bonding: Review
AUTHORS:
Ravindra V. Gadhave
KEYWORDS:
Radio Frequency, Curing, Wood, Adhesive, Polyvinyl Acetate
JOURNAL NAME:
Open Journal of Polymer Chemistry,
Vol.13 No.2,
May
23,
2023
ABSTRACT: White glues, also referred to as polyvinyl acetate
(PVAc) adhesives, are thermoplastics that soften when heated to a specific
degree and re-harden when cooled. For general assembly tasks in the joinery
business, such as edge gluing, wood veneer, and edge bonding, white glues have
been used. White glue requires a prolonged setting time to achieve adequate
handling strength as it solidifies through evaporation or absorption of water
by the wood. Cold press and hot press techniques are used to bond wood
substrates. Recently, white glue is frequently used as a wood adhesive with
dielectric heating systems to prevent this and enhance production speeds. Radio
frequency (RF) curing is merely a technique for heating glue lines in
wood-to-wood joints. It considered a source of heat, like steam and
electricity. In order to bond wood substrates with the least amount of clamping
time, the RF produces a very rapid, uniform rise in temperature. In this review
paper, we discussed the radio frequency curing technique, their mechanism and troubleshooting
to achieve perfect wood bond in joinery segment.