Plywood Production Technology:
1) Log cutting:
Usually import log length is more than 6 meters. Cutting according to the technology required length and quality. The cutting
length should be product length add remains. For example, product is 1220mm*2440mm, cutting length usually be 2600mm or 1300mm.
log length, camber and demerit affect plywood output directly. Remains are small wood pieces, truncations, sawdust, tec. Log
cutting wastage ratio is 3%-10%.
2)Veneer peeling:
Peeling is the most popular plywood producing process. Back veneer thickness is about 0.6mm, core veneer and centre veneer
thickness is about 1.8mm.
3) Drying:
Veneer is moist. it should be dried according to the technology requirement. After drying, it will shrink. Dimension will become
smaller. Veneer length, width, thicknesswill shrink. Shrink wastage is related to wood material, moisture containing, veneer
thickness. Shrink wastage is 4%-10%.
4) Veneer gluing and handling:
Handling include cutting, putting veneer together and mending. Cut zonal veneer into specification veneer or proper size which can
be put together. Narrow zonal veneer can be put together into one veneer. Veneer with demerit can be mended to be qualified.
Wastage in this part related to log material, peeled veneer quality, dried quality, and worker operation skill. Wastage ratio is
4%-16%. Import veneer processing plywood wastage ratio is 2%-11%.
5) Cold and Hot press:
Veneer be glued and stacked, then glue together under set temperature and pressure by hot press. As veneer temperature and
moisture containing changes, veneer will shrink. Shrink wastage is related to temperature, pressure, hot press time, wood
material, moisture containing,wastage ratio is 3%-8%
6) Edge trimming:
Trimming the edge of the plywood flank from hot press to qualified plywood board. Remains related to process remains and product
dimension. Production is bigger, wastage is smaller.Wastage ratio is 6%-9%
7) Sanding:
Sanding plywood surface to make it good. Wastage is powder. Veneer quality is good, sanding is less. Wastage ratio is 2%-6%
Other machines
We can also provide other machines, just like veneer jointer machine, knife grinder and so on.