Best Quality Structural Plywood and Timber Veneers for Your Projects that Meet Stringent Specifications
Timber veneer is real wood that has been thinly sliced. It provides the most cost-effective and environmentally friendly method of utilising timber and wooden products. A timber veneer has more than forty times the surface coverage of a 35 mm thick timber. The thickness of timber veneer used in Australia and New Zealand is typically between 0.5 mm and 0.85 mm. This naturally occurring and renewable resource competes with nonrenewable commodities such as steel, plastic, iron, and aluminium. Decorative timber veneer is made by slicing or peeling selected logs of wood to a thickness of about 0.6 mm.
The rotary cut timber veneer has a very broad appearance, whereas the quarter cut has a straight line pattern. Slicing the timber veneer at right angles to the growth rings produces a quarter cut.
Crown cut is a popular
method of decorating timber veneers that is obtained by slicing the timber
parallel to the growth rings. This cutting method produces a crown or cathedral
figure, typically with a straight grain pattern on either side of the crown.
How
are timber veneers joined?
Timber veneers can be joined
in many ways. Some common methods of joining timber veneer are described below:
Book
matched: The leaves of the timber veneer are alternatively folded
out, providing it with opening like the centre of the book. This arrangement of
joining timber veneer leaf results in a mirror image of the leaf.
Slip
matched: The veneers are simply laid side by side, resulting in
the repetition of the figure pattern.
Reversed
slip matching: Each alternate sheet is reversed and to end.
This method of joining timber veneers is often used with crown cut veneers.
End
match: Two consecutive leaves of the veneers are book matched,
and the next two are flipped, creating a four-piece end match.
Mismatch
or random match: Individual leaves of the timber veneer are
random matched. This method is often used for knotty veneers, and done by the
woodworkers to dispense clusters of knots more evenly across the sheet.
Decorative timber veneers
are available in many finishes at Matilda Veneer. These are:
Good
Two Sides: It is used for the projects that need finishing on both
sides, as both sides are seen, such as doors, windows, and shelves.
Down
Grade Back (DGB): One face of the veneer is polished while the
second one has a lower grade of the same species to back the sheet.
Any
Back: Also known as Back at Manufacturers Option (BAMO), this
finishing is used to counteract sheet material. Any Back timber veneer is used
in the projects where the back is unseen, such as ceiling panels and wall
panels.
Structural
plywood with long-term carrying performance
Structural plywood is
typically used when strength and structural stability are more important than
the face of the veneer. Structural plywood is used in projects that require
long-term load carrying capacity. Machine stress-grading or in-grade analysis,
where the product is manufactured to a strict specification, determines the structural
properties of the timber plywood. Structural plywood specialists at Matilda
Veneer determine various properties of the plywood, such as
- Bending strength
- Modulus of elasticity (MoE)
- Tension strength
- Shear strength, and
- Compression strength
This is done to ensure that
what is received is of the highest quality and meets the specific requirements
of the project. In addition to the above laboratory analysis, Matilda Veneer
conducts ongoing in-mill verifications for the strength and stiffness properties
of the structural plywood.
The ease of workability,
uniformity of performance, and durability of structural plywood are all highly
valued. Roofing substrates, flooring, and structural bracing are just a few of
the applications for structural plywood. When structural plywood is exposed to
moisture, such as for external cladding, it must be treated to a hazard class
of at least H3.
The
benefits of structural plywood
- It is resistant to heat, cold, and humidity
- Structural plywood has two times shear
carrying capacity compared to timber veneer
- The plywood offers dimensional stability to a
high degree
- Resistant to damage, corrosion, and chemicals
- Offers a high strength to stiffness to weight
ratio
- Nails can be placed close to the panel edges
of the plywood
Structural plywood often uses A-Bond or B-Bond adhesives. A-bond is made
from phenol formaldehyde resin while B-bond uses melamine-urea-formaldehyde. Of
the two types, A-bond is more resistant to water than B-bond.
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