CORE VENEERS FOR OUR PLYWOOD

White Birch (Origins From Russia, Estonia, Latvia and the Baltic States)
Chinese Poplar (High Dense )
Imported Poplar (Light )
Chinese Eucalyptus
Hardwood ( Origins From Vietnam, Uruguay, Brazil,Malaysia,Indonesia,Cambodia,Africa,North and South America)
Falcata ,Fir ,Pine

The core veneer tree species we use are not limited to the above tree species. We will use appropriate tree species to produce our plywood according to customer requirements and actual product needs.

Xuzhou MEGA is a leading manufacturer of peeled birch veneer, a universal product used for the production of plywood and various furniture components.

Our company over the years has gained vast experience in the production of both peeled birch veneer and high-quality technological chips, which are widely used in pulp and paper mills.

Our production facilities are concentrated in the city of Peixia,Xuzhou,China, but the geography of our customers is much wider – we fruitfully cooperate both with enterprises located in Xuzhou and that are interested in purchasing our products. We value our customers and carefully study their needs in order to organize the process of production and delivery of products optimally in each specific case.

We use modern profile Finnish equipment manufactured by “Raute” in our workshops to produce peeled birch veneer: a peeling machine “Raute Smart Peel” and an automatic sorting line.

Our company is focused on the production of the most demanded standard sizes of peeled birch veneer: 1270×1270, 1300×1300, 1600×1600, 1300×1600, 1600×1300, 1300×2600 and 1600×3200 in thickness from 1 to 3 mm.

In our daily work, we are focused on introducing high-tech technologies into production, increasing the level of technical literacy of our personnel and maintaining a favorable production atmosphere within the team.

Rotary cut veneer production technology

 Veneer is a wood-based material, there are thin sheets of wood with a thickness of 0.1 to 10 mm.

Veneer can be obtained in three ways – by peeling, planing or sawing.
The main area of ​​rotary cut veneer’s application is the production of laminated glued materials such as plywood, wood laminates, bent glued products, etc.
Birch is considered the best breed for peeling, as it has the following advantages:

  • low displacement;
  • structure uniformity;
  • high strength.

Hardwood raw materials are harvested in logs. With a 16 cm diameter and more, the lengths of deciduous logs are 1.3 and 1.6 m and multiples thereof; with a 18 cm diameter and more, logs with a length of 1.91 can also be made; 2.23; 2.54 m and multiples of them.
The technological process for the production of rotary cut veneer includes the following operations:

  1. Delivery of raw materials to the warehouse;
  2. Hydrothermal treatment of raw materials;
  3. Cut logs into blocks;
  4. Debarking of raw materials;
  5. Block peeling;
  6. Cutting of veneer strips into format sheets and selection of lumpy veneer;
  7. Veneer drying;
  8. Sorting;
  9. Repair of veneer sheets and joining lump veneer into cut sheets.

Hydrothermal treatment of raw materials is a mandatory operation that allows to increase the wood plasticity. Without this operation, it is impossible to obtain high-quality veneer, it will crack during the peeling process.
The duration of the hydrothermal treatment depends on the breed, the size of the raw material, its initial temperature and humidity, as well as the temperature of the processing agent.
Hydrothermal treatment can be carried out in water (this operation is called boiling) or in a saturated steam environment (steaming). In the production of rotary cut veneer, boiling is usually used.
Most often, there are open or closed cooking tanks those are used for the hydrothermal treatment of raw materials by boiling.
Cut logs into blocks. The log is a round assortment, the length of which is a multiple of the length of the block. When bucking, the cuts must be made strictly perpendicular to the block axis. The formation of end chips and step cut is not allowed.
Debarking of raw materials can be carried out both on specially designed debarking machines and on a peeling machine.
Block peeling. Peeling is the process of cutting wood in a plane parallel to the direction of the fibers and perpendicular to their length. When peeling, the block is given a rotational motion, and the knife is given a straight-forward motion of the feed to the axis of the block rotation. The width of the resulting strip of veneer is equal to the length of the block, and the total length depends on the block diameter and the veneer thickness.
Cutting of veneer strips into format sheets is most often carried out using guillotine format shears. The use of a looping conveyor allows to create a buffer stock of veneer and reduce the length of the conveyor.
Veneer drying veneer. The most common veneer drying equipment is roller dryers, in which the veneer is moved in a stream of heated drying agent by paired rotating rollers. Roller dryers are continuous installations with forced multiple circulation of the drying agent.
Sorting. After drying, the veneer is sorted, that is, divided into groups taking into account the wood type, the size and quality of the veneer sheets.
Veneer intended for the subsequent production of general-purpose plywood from it is divided into 8 grades:
• five grades – for outer layers of plywood: E (elite), I, II, III, IV;
• three grades – for inner layers of plywood: 1, 2, 3.
Sorting is carried out depending on the presence of grade-forming wood defects in veneer sheets, which include: knots; fungal lesions; color changes; cracks, as well as processing defects, the main of which is the surface roughness.
Repair of veneer. The quality of veneer can be improved: a) by cutting down sections of the veneer strip containing unacceptable wood defects; b) by repairing formatted veneer sheets; c) by tightening of cracks with adhesive tape or staples.

Production

 Our main production is rotary cut dry birch veneer.

Thickness: 1.5 mm (optionally can be 1.1 mm)

Basic sizes:

  • 1600×1600 mm
  • 1300×1300 mm

Possible sizes:

  • 1600×1300 mm
  • 1300×1600 mm

It is possible to cut into size according to the customer requirements.

We sell MIX grade veneer, namely all veneer after peeling and drying. Sorting according to client’s requirements is possible.

Typical ratio of veneer grades in 1 m3 :
Grade I: 0.5-1.50%
Grade II: 2.00-3.00%
Grade III: 20.00%
Grade IV: 26.00%

The inner layers are 50.00% , including pieces 5-8%.
The ratio can vary, depending on the quality of the birch logs.

Packing: packs wrapped in stretch film, strapped with PP tape, on pallets made of wood or plywood.
The rate of truck loading is 33,753 m3, the gross weight is 21500 kg
The container loading rate is 43.349 m3, gross weight up to 26500 kg.

Veneer grades:

Grade I
– practically free from defects; partially intergrown-, dead- and loose knots, knot holes, worm holes with diameteres not exceeding 6 mm and totaling 3 pcs. per 1 m2; also are allowed not more than 5 intergrown sound knots with a diameter of 15 mm per 1 m2, and some minor brown vein lines.

Grade II
– are allowed partially intergrown-, dead- and loose knots, knot holes, worm holes with diameteres not exceeding 6 mm and totaling 6 pcs. per 1 m2; also are allowed not more than 10 intergrown sound knots with a diameter of 25 mm per 1 m2, patching of the sheet surface is permitted. Knots and open defects are sealed with veneer inserts.

Grade  III

– are allowed partially intergrown-, dead- and loose knots, knot holes, worm holes with diameteres not exceeding 6 mm and totaling 10 pcs. per 1 m2 of the sheet surface; intergrown sound knots are permitted in unlimited numbers.

Grade  IV
– any manufacturing defects are allowed. Partially intergrown-, dead- and loose knots, knot holes, worm holes with diameteres not exceeding 40 mm are permissible in unlimited numbers, only fair glueing of veneer sheets is guaranteed.