LVL Laminated Veneer Lumber Production Line

How It's Made: Laminated Veneer Lumber (LVL)?
Laminated Veneer Lumber, LVL is made of thick veneer laminated along the grain direction, hot pressed, glued and sawed.
 

 

 

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.;

LVL process flow chart:

1. LVL process flow: log peel into veneers → veneers are cut into certain specifications (thickness is eveness,no tolerance)→ dried → glued and stored → tiled layer by layer by forming line → cold press → hot press

2. The most common width of LVL is 1270mm (international standard size), and the maximum width is 1600mm. However, when the width exceeds 1400mm, it will be inconvenient for workers to lay and paving boards.

3. The maximum length of LVL shall not exceed 12m. lenth normally 3.2m,4.2m,5.2m,6.2m,7.2m,8.2,9.2M. If it exceeds than 12M, the cost will be very expensive, and the transportation of hot pressing plate is also a big problem.

4. Take linyi area as reference, the hot pressing time takes 60 minutes for 35mm, 100 minutes for 50mm, 150 minutes for 75mm and 200 minutes for 100mm. Moreover, the hot pressing time is related to the dryness of the veneer, the glue, the local temperature and the season. The time in winter is longer than that in summer.

5. The glue used for LVL is Phenol formaldehyde glue(for exporting or furniture use, urea formaldehyde glue for packing useage. If the board density is 550Kg / m3, the glue amount is 80kg / m3.

 

LVL production line we can make length at 3.2M/4.2/6.5/9.5/12.5M/14.8M.

 

 

 

 

 

 

 

 

 

 

 

 

Automatic Hot press line

 

Model: BY114×20/20-10IId

Rated pressure: 2000T

Feeding direction: vertical

Layer quantity: 10 layers

Layer distance: 280mm

Hot platen quantity: 11pcs

Hot platen size: 1500*6300*70mm (6 holes in and out)

 

 

 

 

 

 

 

 

 

 

Compared with solid wood, LVL has the advantages of uniform structure, high strength, good dimensional stability, and can meet the use requirements of wood structure construction, bridges, furniture and transportation.Characteristics, properties and applications of laminated veneer lumber (LVL)

 

 

Laminated veneer wood (LVL) is a kind of high-strength engineering wood, which is made by bonding multiple veneer layers by layers with adhesive. LVL was developed to use new species and smaller trees that cannot be used to make solid sawn timber. LVL is a cost-effective and sustainable building material that can provide high structural strength and reliability when used in structural applications.

 

 

LVL belongs to the category of structural composite wood (SCL), which is made of dried and graded wood veneer, batten or veneer.
Veneers are laminated and bonded together with moisture-proof adhesive. The stacking direction of the veneer is the same, that is, the wood grain is perpendicular to the length of the blank (the blank is a complete plate formed by stacking them).
The thickness of veneer used for manufacturing LVL is less than 3 mm, and it is produced by rotary stripping technology. These veneers are well processed, scanned for defects, analyzed for moisture content, and cut to a width of 1.4 m using a rotary shear for LVL production.
LVL is prone to decay when exposed to high moisture content or used in an unventilated area. Therefore, LVL should be treated with preservatives to prevent decay or infection of such applications.
LVL can use common tools for sawing, nailing and drilling. You can also punch holes in these components to install services.
The manufacturing thickness of LVL plate or blank is 35 to 63 mm, and the length can reach 12 m.
The fire resistance of LVL is similar to that of solid wood, and the carbonization rate is slow and predictable. The rate varies according to the type of wood used and the size of members.
Because the veneers in the LVL face the same direction, they are particularly suitable for beam structures. The length, depth and strength of LVL beam can effectively bear the load of large span.
 

 

1. LVL has excellent size strength and weight strength ratio, that is, LVL with smaller size has greater strength than solid core. Compared with its weight, it is also stronger.
2. Relative to its density, it is the strongest wooden material.
3. LVL is a widely used wooden product. It can be used with plywood, wood or OSB.
4. According to different manufacturers, LVL can be manufactured into plates or blanks of almost any size or size.

5. LVL is made of wood materials with uniform quality and minimum defects. Therefore, their mechanical properties can be easily predicted.

6.LVL can be customized according to the structural requirements.

 

 

It can be used to manufacture I-beams, beams, columns, lintels, road signs, headers, rim plates, templates, floor supports, etc. Compared with solid wood, the high tensile strength of LVL makes it a common choice to construct trusses, such as purlins, truss chords, diagonal rafters, etc.LVL needs appropriate handling and storage requirements to avoid warpage. Even if the production cost of LVL is very low, it also requires a high initial capital investment.

 

 

Laminated veneer lumber (LVL) is a new type of artificial lumber, which is made from small diameter and low quality logs and glued by the parallel lamination. LVL not only retains the natural characteristics of wood, but also has the structural characteristics of solid wood sawn wood, with small strength variability, high allowable design stress, and good dimensional stability. The products can be used for building components, building interior decoration, furniture, car and train carriage plates, container plates, etc. LVL can also be used for formwork beams, columns, joists and sleepers, etc., with a wide range of applications. The research of LVL as a new type of plate began in the early 1970s. First, foreign research institutions developed the manufacturing technology of LVL almost at the same time, and then Finland built the first LVL production line in 1976. At present, there are as many as 19 LVL production lines and factories in Japan. In addition, Australia, South Korea, New Zealand, South Africa and Russia have industrialized production of LVL. The Institute of Wood Industry of the Chinese Academy of Forestry completed the development of LVL in 1988 and passed the appraisal in the same year. Furthermore, the manufacturing and R&D of China's LVL production line, at present, 40%~60% of LVL is used in the construction industry, such as wood structure houses, so the use of LVL has developed in Japan, Europe and other developed countries, while the use of LVL in China is still in the development stage. The vast majority of the production of LVL from Chinese plate factories is exported to Japan, Australia, New Zealand and European countries. Linyi, as a national woodbased panel base, has rich experience in the production of LVL equipment.Sinoeuro Machinery is specialized in manufacturing LVL production line machinery with strong technology force.

 

Laminated Veneer Lumber, LVL Production line

 

 

Schematic diagram of LVL automatic production line

 

LVL AUTOMTIC LINE

 

 

LVL Automatic line Hot press

 

 

Quality is the life of an enterprise and product quality is the key to its survival. The adoption of advanced plywood production processes and machinery and equipment is a very important part of plywood enterprises to enhance and guarantee product quality. Sinoeuro Machinery is a leading brand for wood based panels machinery. Sinoeuro Machinery manufacturer is a professional manufacturer with 31 years experience for veneer peeling, plywood machinery solutions plant with factory layout and processing technology.It covers 8000squre meters,with more than 100 R&D and after sales service technicians.

 

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SINOEURO(SHANDONG)MACHINERY CO.,LTD.
Professional Manufacturer of Wood Based Panel Machinery
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