Peeled board, also known as veneer, padded, … are thin boards peeled or sliced from round log wood with a common size of 640×1270 mm, thickness from 1 to 3 mm depending on the purpose of use.
The wood used to peel the boards is round wood made from fast-growing, cheap price such as Acacia, Eucalyptus, Pine, Rubber, Fat, Bodhi….
Peeled plywood is an input material for the production of Plywood, Film Faced Plywood, auxiliary materials of the peeling board production process are also input materials for processing wood pellets, MDF boards, and particle boards.
2. Production process:
The production process of peeled boards in Vietnam usually goes through the following basic steps:
Logging of logs:
Wood from planted forests, the most common being Acacia, after about 4-6 years of planting, with a diameter of 10-30 cm, it can be harvested;
The wood is cut into lengths of 1.27 – 1.30 m and then put into the peeling line machines: Wood loading conveyor; shell repair machine; peeling machine, automatic plank stacking machine,…
After peeling, the board has the size of 640×1270 mm, the common thickness is 1.5; 1.7; 2.0 mm and humidity between 40-50%.
During the peeling process, the board is classified for the first time into class A, B, and C fish by the naked eyes;
Drying, drying, packing:
The boards are dried by sun drying or drying until the moisture content of 15-20% is the appropriate input moisture for the next stage of assemble.
Peeled boards after drying are classified for the second time to remove damaged products during drying, next are arranged in bundles, 20 sheets/bundle tied with nylon rope.
3. Classification of peeled boards:
Rotary cut Veneer is classified according to the national standard TCVN 10316: 2015 compiled by the Forestry University, based on the standard LY/T 1599-2002 – Rotary cut veneer, Ministry of Agriculture and Rural Development. Agriculture and Rural Development proposed, the General Department of Standards, Metrology and Quality appraised, announced by the Ministry of Science and Technology.
However, in reality in Vietnam, the criteria in the above Standard are referenced and simplified and shortened to facilitate the production, classification, trading of peeled boards,…level, awareness of peeled board factories.
Peeled boards on the market are classified according to the following practices:
Peeled board Grade A+:
A board of all sizes, thickness and thickness, defect-free surface, smooth, bright wood; This type of peeler board is often used as the face layer of plywood.
Grade A peeled board: It is a board of all sizes, with sufficient and even thickness, the surface is not lacking, the amount of wood is small, and the size is small;
Peeled board Grade B:
Thick enough, surface has defects but defect area/total plank area <10%; or missing in size, or torn along the grain; or the surface has many protrusions such as a cat scratch;
Grade C peeled board: Is the type of board obtained when peeling begins or the peel takes advantage of the wood core, type C boards are often torn 10-30% of the surface area, the wood grain is discrete, …
4. Peeling board and Plywood price:
Veneer is the main material to make plywood, the cost of peeled board material accounts for 50-70% of the total production cost depending on the quality grade product.
In general, good quality Film Faced Plywood and Plywood products must use grade A peel board materials to ensure that there are no hollow inside errors in the plywood, increase the glue strength,…
Film Faced Plywood manufactured by Nhat Minh CI Company mainly uses grade A+ peeled plywood as the face layer and grade A peeled board as the core layers, so it always ensures consistency, firmness, durability, and thickness uniformity. , …of the product.