WISA-Birch Special

WISA-Birch Special is a multipurpose high quality product selected for various applications where excellent strength and light, smooth and even surface is essential. Due to its even surface WISA-Birch Special offers an excellent base for high quality painting and different overlaying methods. Because of the superb properties, strenght and surface, uncoated WISA birch plywood products are widely used in the demanding vehicle, shipbuilding, construction and furtniture industries.

Properties

Excellent strength/weight ratio
Possibility to customise according to your needs
Light, smooth and hard surface
Wide size and thickness range available with strict tolerances

End-uses

Vehicle floors
Shipbuilding
Construction
Joinery and shop fitting
Laminating industry
Furniture
High end packaging

Bonding

Weather resistant gluing according to EN 314-2/class 3 Exterior.
WISA-Birch Special fulfills the requirements of EN 13986 E1 low formaldehyde emission class. On request deliveries according to EPA/CARB.

Surface and edges

Face: Improved S (II)
Reverse side: BB

All available surface qualities comply with the EN 635 standard (Plywood - Classification by surface appearance) and is in part stricter.

Panel size

1220/1250 x 2440/2500 mm
1500/1525 x 2500/3000/3050 mm

Pre-cut panels and cnc-machined components available on request.

Size tolerance (lenght/width) ± 1 mm/1000 mm
Squareness tolerance ± 1 mm/1000 mm

Thicknesses and weights

Nominal thickness (mm)	Number of plies	Thickness	Weight (kg/m²) abt
		min. - max.
6.5	5	6.1 - 6.9	4.4
9	7	8.8 - 9.5	6.1
12	9	11.5 - 12.5	8.2
15	11	14.3 - 15.3	10.2
18	13	17.1 - 18.1	12.2
21	15	20.0 - 20.9	14.3
24	17	22.9 - 23.7	16.3
27	19	25.2 - 26.8	18.4
30	21	28.1 - 29.9	20.4

Size and thicknesses relating to moisture content 8 - 12 %.
Thicknesses and tolerances fulfill the requirements of EN 315 (Plywood - Toleranes for dimensions) and are in part stricter.
Designed strength properties and thicknesses available on request.