Plywood Density VS Timber Density
The Density of Plywood is higher than the density of the timber species used to manufacture the veneers . Because there is a compression process in the production of plywood. The pressing machines will compress the veneers under high pressure.
Density of PLYWOOD and Density of Core Veneers
The components of plywood is : face veneer, core veneers and back veneers. The weight of face/back veneers of plywood practically much less than the weight of core veneers. So the density of plywood is mainly depended on the timer species of the core veneers .
The density of different plywood
Usually 4 kinds of timber species are used to manufacture the cores of plywood ( film faced plywood ) , i.e. birch, hardwood, pine and poplar. The density of different plywood is listed as follows:
| PLYWOOD (FILM FACED PLYWOOD) DENSITY (KG/M3 or KG/CBM) | |
Birch Plywood (Core is birch species) | ABOUT 680~760 |
Rubber Plywood (Core is rubber) | ABOUT 700~780 |
Hardwood Plywood (Eucalyptus core ) | ABOUT 580~660 |
PINE CORE PLYWOOD | ABOUT 570~630 |
Poplar Plywood | ABOUT 530~580 |
Conifer Plywood | ABOUT 470-520 |
Sometimes, buyers order combi core plywood , such as combined poplar/hardwood, combined birch/poplar and so on . The density of combi plywood is depended on the components of core . Usually, the density of combi core plywood is about 550~650 KG/CBM .
However, suppliers usually name the plywood by using name of the species of face/back veneers . For example, Birch plywood can have a poplar core or combi core. In this case, the density of the birch plywood with poplar core will be about 580~620KG/CBM . Only full birch plywood can have a density of ABOUT 680~760 kg/CBM.
