wood mchine hot press

Description:

1.Manufacturer
2.Good quality as well as low price
3.Easy to operate and maintain
4.saving labors

Processing technology of plywood productionline:

   In the producing process, log cutting,peeling, dry, handling, hot press, edge trimming, sanding affectthe wastage. The wastage is remains of processing (materiality) andshrinking (immateriality). Wood wastage is related to the material,specification of log, equipment capability, technology andproduction specification.

  1) Log cutting:

  Usually import log length is more than 6meters. Cutting according to the technology required length andquality. The cutting length should be product length add remains.For example, product is 1220mm*2440mm, cutting length usually be2600mm or 1300mm. log length, camber and demerit affect plywoodoutput directly. Remains are small wood pieces, truncations,sawdust, tec. Log cutting wastage ratio is 3%-10%.

  2) Veneer peeling:

  Peeling is the most popular plywoodproducing process. Back veneer thickness is about 0.6mm,  coreveneer and centre veneer thickness is about 1.8mm.

  3) Drying:

  Veneer is moist. it should be driedaccording to the technology requirement. After drying, it willshrink. Dimension will become smaller. Veneer length, width,thickness will shrink.  Shrink wastage is related to woodmaterial, moisture containing, veneer thickness. Shrink wastage is4%-10%. 

  4) Veneer handling:

  Handling include cutting, putting veneertogether and mending. Cut zonal veneer into specification veneer orproper size which can be put together. Narrow zonal veneer can beput together into one veneer. Veneer with demerit can be mended tobe qualified. Wastage in this part related to log material, peeledveneer quality, dried quality, and worker operation skill. Wastageratio is 4%-16%. import veneer processing plywood wastage ratio is2%-11%.

  5) Hot press:

  Veneer be glued and stacked, then gluetogether under set temperature and pressure by hot press. As veneertemperature and moisture containing changes, veneer willshrink.  Shrink wastage is related to temperature, pressure,hot press time, wood material, moisture containing, wastage ratiois 3%-8%

  6) Edge trimming:

  Trimming the edge of the plywood flank fromhot press to qualified plywood board. Remains related to processremains and product dimension. Production is bigger, wastage issmaller. Wastage ratio is 6%-9%

  7) Sanding:

  Sanding plywood surface to make it good.Wastage is powder. Veneer quality is good, sanding is less. Wastageratio is 2%-6%

  8) Warehousing:

  Plywood is packing in palletize or inbulk

 

wood mchine hot press