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LVL production line

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Full Automatic LVL Production Line

Full Automatic LVL Production Line

(laminated veneer lumber, LVL) is a material made of thick veneer laminated and assembled along the grain direction, hot pressed and glued, and then sawed. It has the advantages of uniform structure, high strength and good dimensional stability. Requirements for the use of wood structure buildings, bridges, furniture, transportation and other fields.
LVL making procedure is same as plywood, the only difference is the veneer fiber direction during paving section. LVL main length 4,2m, 6m, 12m, etc.








Full Automatic LVL Production Line

LVL 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%

Full Automatic LVL Line Layout


Machine List & Parameters:

Log Debarker
8-14ft Spindleless Log Debarker
Max. Working Length: 1400mm
Blade and Roller Length: 1500mm
Max. Opening: 600mm
Power: 11kw+11kw+5.5kw
Peeling Speed: 70m/min
Diameter of Double Roller: 180mm
Diameter of Single Roller: 150mm
Machine Weight: 4000kg
Veneer Peeling Machine (LVL&PLYWOOD)8-24ft spindleless veneer peeling machine
Peeling Speed: 40-80m/min
Max. Working Length: 1400mm
Blade and roller length: 1500mm
Max. Opening: 500mm
Diameter of Roller: 125mm
Peelilng Thickness: 0.5-4mm
Power: 7.5kw*4_7.5kw(servo) +3.7kw(servo)+1.5kw
Machine Weight: 6700kg
Core Veneer Roller Dryer8-3Working width:2800mm
Working layer:2
Length of heating section: 2000mm*12 section= 24000mm
Length of cooling section: 2000mm*1 section= 2000mm
Total power    108kw
Veneer thickness: 1.5~4.5mm
Veneer initial moisture: 60%
Veneer final moisture: 10±2%
Drying capacity: ~2.4cbm/h
Total weight: ~56,000kg
Forming machine (PLYWOOD)8-4Working length:24m
Steel mesh type
Huali motor
Schnieder electric parts
Included: Dust collector, 4kw
Max cut size: 2500mm
No need foundation
No include: air compressor.
Hydraulic Lift Type Glue mixer (LVL&PLYWOOD)8-515+3KW  with 3 glue tank
Rotating speed : 480Rpm
Weight 600kgs
Glue bucket: 4pcs
4FT glue spreader (LVL&PLYWOOD)8-6Dia.&number of rubber roller:219mm,2pcs
Lenght of rubber part: 1400mm
Dia.&number of squeezing (SS covered ) roller:245mm,2pcs
Surface speed:25m/min
Motor power:4kw
Hardness of rubber:45 degree

Paving Line

8-7Mesh belt length: 25m
Board receiving part: 6.3m
Total length: 30.5m
No fundation with pre-press
Total power: 19.2KW
Vertical type 600T cold press machine8-8

Frame steel plate thickness: 30mm,

Up beam height: 600mm,

Down beam height: 600mm,

Middle beam height: 450mm,

Opening: 1800mm,

Cylinder: Dia. 80mm*1050mm*4pcs,

Lifting cylinder: Dia. 80mm*1050mm*4pcs.

High pressure pump: 7.5KW, Automatic control,

Automatic feeding and outputting: 9.7KW

Vertical Type 6200mm 1000T 10 Layers hot press machine8-9Frame steel plate thickness: 30mm,
Up beam height: 600mm,
Down beam height: 600mm,
Middle beam height: 450mm,
Hot platen size: 6200*1420*60mm*11pcs,Q235 material,
Layer distance: 120mm,
Hydraulic pump 2*18.5KW,
High pressure pump 1*7.5KW,
Control model: PLC automatic, 6-stage step-down and moisture removal,
Total power: 44.5KW
10Automatic Feeding And Outputting System8-10Feeding system size: 2.15*6.2*5.5M,
Feeding mode: automatic,
Cylinder: Dia.80mm*2400mm,
Lifting power: 4KW,
Board pusher motor power: 2.2KW,
Belt covneyor motor power: 1.5KW,
Dimensions of chain folding plate extractor:6.2*2.15*4M
Chain lifting motor power:4KW,
Belt outputting conveyor: 1.5KW,
Roller outputting motor power: 2.2KW,
11Vacuum Feeding System8-11Driving motor: 1.5KW,
Fan: 2.2KW,
10pcs vacuum sucker
12Hydraulic Lift Table8-12Max. lifting height: 1800mm
Power: 3KW+2.2KW
Dimension: 6M*1.2M*0.58M








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