China Plywood Making Machine Plywood Production Machinery Woodworking Machine

Plywoodis a sheet material manufactured from thin layers or "plies" ofwood veneerthat are glued together with adjacent layers having theirwood grainrotated up to 90 degrees to one another. It is anengineered woodfrom the family of manufactured boards which includesmedium-densPower Transmission Parts ity fibreboard(MDF) andparticle board(chipboard).

All plywoods bind resin and wood fibre sheets (cellulosecells are long, strong and thin) to form acomposite material. This alternation of the grain is calledand has several important benefits: it reduces the tendency of wood to split when nailed in at the edges; it reduces expansion and shrinkage, providing improved dimensional stability; and it makes the strength of the panel consistent across all directions. There is usually an odd number of plies, so that the sheet is balanced-this reduces warping. Because plywood is bonded with grains running against one another and with an odd number of composite parts, it has highstiffnessperpendicular to the grain direction of the surface ply.

Smaller, thinner, and lower quality plywoods may only have their plies (layers) arranged at right angles to each other. Some better quality plywood products will by design have five plies in steps of 45 degrees (0, 45, 90, 135, and 180 degrees), giving strength in multiple axes.

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 leRiveter ngth 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 about1.8mm.

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, thickness will shrink. Shrink wastage is related to wood material, moisture containing, veneer thickness. Shrink wastage is 4%-10%.

4) Veneer 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. Drying Machine 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) Hot press:

Veneer be glued and stacked, then glue together under set temperature and pressure by hot press. As veneer temperature and moisture containSpeaker,Trumpet & Buzzer ing changes, veneer will shrink. Shrink wastage is related to temperature, pressure, hot press time, wood material,moisturecontaining, 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%

8) Warehousing:

Plywood is packing in palletize or in bulk.
Main machines

Our service

Presale service
1. Makereliable pratical mechine list and production proposalfree of charge, according to customers' actual situation

2. Design the machine free of charge,according to customer's production line and production cost,

3.Make the workshopand production line layout free of charge,accorFurniture Making Machine ding to customers' factoryland

Medium-sales service
1. Video for the manufacturing processas customers requirement

2. Machine modifyingaccording customers' suggestion

3. Order the shipment and prepare the documentsfor customers' clearance, according to customers' custom requirement

After-sale services
1. One year warrantyfor main machine,cost pricefor vunerable parts

2. Experienced engineeris avaiable for the machine installation and worker training

3. Cooperate with Aliyun OS,remote controlof trouble shoting and system upgrading