Roofing Plywood Sheets

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FAQ

What is the density of plywood?
With the veneer after the wood by the direction of the criss-cross the composition of the slab, heated or not heated under the conditions of suppression.
Four levels: Principal, First, Second, Third. Commonly used for one, two, three and so on
Hard fiber board is also a density board, but its density is above 0.80g / cm3. Divided into one side of the light, the other side of the textured side of the hard fiber board and two-sided hard fiber board two.
Class III resistant tide plywood class IV tonic resistant plywood
and the dashboard and the inner panel are arranged symmetrically on both sides of the center layer or the core.
What harm does the plywood factory work?
Occupational acute benzene poisoning is the workers in the professional activities, short-term inhalation of high-dose benzene vapor caused by the central nervous system suppression as the main manifestation of systemic diseases
Decorative veneer veneer plywood features
Decorative veneer is made of high quality wood by slicing or peeling processing made of thin wood chips.
Plywood in the material defects?
resin leakage (resin) resin streak trees after the local injury, the resin gathered in a large number of them and through the surrounding wood and the formation of color than the surrounding normal wood deep
Material for the plywood defects which
Primary rot incipient decay The erosion of the fungus by the growth of the fungus causes a slight change in its chemical composition (usually before drying), showing slight changes in the hardness and discoloration, resulting in changes in the nature of the wood.
The structure of the plywood at the same time meet two basic principles
the front panel is called the panel, the back of the table is called the back plate; the core