Birch Plywood is made of several glued veneer sheets depends on thickness required. Wood grains of adjoined veneer sheets can have perpendicular or lop-sided (when wood grains are along one side) dispositions. The number of veneer sheets varies from 3 to 23 depends on thickness.
This plywood performs best in demanding special building applications and wherever high strength is required. Birch Plywood is very strong and smooth surfaced. It is particularly well suited to design applications requiring good strength and stiffness characteristics. This plywood provides a unique combination of strength, flexibility and a perfect look in a light-colored range.
Thermoreactive glues phenol-formaldehyde and cabamide are used in birch plywood production.
„Exterior“ and „Interior“ birch plywood
Plywood is subdivided by degree of moisture resistance for:
- MR (interior) – moisture resistant
- WBP (exterior) – waterproof
Sanded and not sanded birch plywood
Also plywood is subdivided by sanding of face veneers for:
- Not sanded – NS
- Sanded one side – S1S
- Sanded two sides – S2S
Birch Plywood, MR (Interior) glue
| Sizes mm | 1525 x 1525 |
| Thickness mm | 3/ 4/ 5/ 6/ 6,5/ 8/ 9/ 10/ 12/ 15/ 18/ 21 |
| Grades | I/II (B/BB), II/II (BB), S/BB, II/III (BB/CP), BB/WG, III/IV (BB/C), IV/IV (C) |
| Formaldehyde emission | E-1 |
| Density | 640-700 Kg/m3 |
| Moisture content | Max. 10% |
Birch Plywood, WBP (Exterior) glue
| Sizes mm | 2440 x 1220
2500 x 1250 1500 x 2500 1500 x 3000 1525 x 3050 |
| Thickness mm | 4/ 6/ 6.5/ 8/ 9/ 10/ 12/ 15/ 18/ 21/ 24/ 27/ 30/ 35/ 40 |
| Grades | B/BB, S/BB, BB/BB, BB/CP, BB/WG, BB/C, C/C |
| Formaldehyde emission | E-1 |
| Density | 640-700 Kg/m3 |
| Moisture content | Max. 10% |
Allowed tolerances
| Normal thickness of birch plywood | Number of layers, not less than: |
Sanded birch plywood |
Unsanded birch plywood |
||
| Maximum tolerance | Thickness discrepancy | Maximum tolerance | Thickness discrepancy | ||
|
3 |
3 |
+0,3 / -0,4 |
0,6 |
+0,4/-0,3 |
0,6 |
|
4 |
3 |
+0,3/-0,5 |
0,6 |
+0,8/-0,4 |
0,6 |
|
6,5 |
5 |
+0,4/-0,5 |
0,6 |
+0,9/-0,4 |
1,0 |
|
9 |
7 |
+0,4/-0,6 |
0,6 |
+1,0/-0,5 |
1,0 |
|
12 |
9 |
+0,5/-0,7 |
0,6 |
+1,1/-0,6 |
1,0 |
|
15 |
11 |
+0,6/-0,8 |
0,6 |
+1,2/-0,7 |
1,5 |
|
18 |
13 |
+0,7/-0,9 |
0,6 |
+1,3/-0,8 |
1,5 |
|
21 |
15 |
+0,8/-1,0 |
0,6 |
+1,4/-0,9 |
1,5 |
|
24 |
17 |
+0,9/-1,1 |
0,6 |
+1,5/-1,0 |
1,5 |
|
27 |
19 |
+1,0/-1,2 |
1,0 |
+1,6/-1,1 |
2,0 |
|
30 |
21 |
+1,1/-1,3 |
1,0 |
+1,7/-1,2 |
2,0 |
Application
Building and construction
Vehicle industry
Wagon-building
Internal and external design
Furniture construction
Shipbuilding
Trade and storage equipment
Packaging
Children’s furniture, playing grounds, toys
