All Categories

Processing procedure

Home > Products > Whole plant design and layout > Processing procedure

Products

9%PW{%]P@ID``S918WG09P5
Whole plywood making plant processing procedure for making different plywood

Whole plywood making plant processing procedure for making different plywood


Description

How plywood made?

Plywood making procedure

plywood production line

图片1

Plywood processing technology:

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

1) Log debarking:

Log debarker:

图片2

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%.

图片3

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.

图片4

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%.

1.Steel Tube drying

图片5

2.Solid hot platen press drier

图片6

3.Roller type drier

图片7

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. 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%.

Veneer assemble line or hand assemble

图片8

图片9

图片10

5) Cold Press:

图片11

The cold press the basic machine for plywood plant. This machine is also called pre-press. The veneer after glued and assemble, first it will be formed in to the blank panle by the cold press. Then it will be transferred by forklift to the hot press.


6) Hot press:

图片12

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%


7) Edge trimming:

图片13

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%

8) Sanding

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

图片14

图片18

9) Warehousing:


Plywood is packing in palletize or in bulk

图片15

10) Laminating with veneer, melamine paper,membrane paper etc.

Finished plywood products

图片17

图片16

SINOEURO MACHINERY

ONE STOP COMPLETE SOLUTIONS TO YOUR PLYWOOD PLANT


INQUIRY
ONLINE