The plywood core is considered the most important part of the plywood. Together with glue, the plywood core determines the strength and durability of the plywood. Any good plywood should have a decent core.
In Vietnam, the most popular and abundant wood is Acacia, Eucalyptus. These trees are easy to grow and well adapted to the climate in this country. These hardwoods have outstanding features for plywood ranked first quality such as holding nails, screws, and glues well, easy to color, and can be sanded and polished to a great finish. Wood is easy to cut with both hand tools and machines. The ability to resist termites and the ability to bear strong and strong impacts of wood is very good.
Especially, in Vietdutch JSC we prefer to use both types of wood to make the core.
1. What is Acacia and Eucalyptus – 2 types of wood common in the core of plywood?
- Acacia
Acacia not only has beautiful color, deep and natural wood grain, but also has good resistance to rot and termites. This makes acacia wood a top choice for plywood cores in furniture, decorations and high-end construction. With its heavy weight, acacia wood provides good bearing capacity and low settlement, which helps plywood products maintain stable shape and size.
- Eucalyptus
Eucalyptus is a tropical hardwood material in Southeast Asia and China. Almost all eucalyptus veneer core plywood is processed under two times hot press. This type of wood has a natural yellow-white color and smooth wood grain. Eucalyptus wood is also highly durable and resistant to rot and termites.
2. Core plywood with accuracy technical specification in Vietdutch partner factories
The best quality plywood is the plywood with good input material so the quality of core veneers must be controlled strictly before using them in manufacturing. A standard wooden plywood with normal thickness from +/-0.08mm for 1.7mm to 2mm and +/-0.1mm for 2.4mm; Vietnamese core plywood with three grades of quality
Diving into 3 grades: Grade A, B and C. These grades suit all plywood manufacturing purposes from high grade to low grade:
- Veneer Plywood Grade A
– There are 2 size that 1270x640mm (with moisture is under or equal 18%) and 1270x670mm (with fresh above or equal 29%)
– There are no defects in the side
– Do not tear at the head more than 35 cm
– No rough, no mold
- Veneer Plywood Grade B
– B grade size is from 1.5cm to 3cm smaller than A grade size, corresponding to moisture of A grade
– A limited number of living eyes, deadeye
– There may be large holes and lacerations
– There may be a patch
- Veneer Plywood Grade C
– Any piece does not follow B grade size
– Unlimited number of living eyes, deadeye
– Large holes and lacerations are acceptable