Plywood Manufacturing Process by H&G Plywood
Nowadays, plywood is used widely in the life, especially in the construction industry and furniture because of its outstanding features such as low price, high durability.
The layers that make up plywood are intentionally glued together at alternating right angles. This is what gives it both strength and durability. This is a special structure of plywood as compared to natural wood. This cross-graining also reduces the chances of the wood splitting when nailing at the edges, and it makes the wood resistant to warping, cracking, and twisting. The way plywood is made also ensures a consistent strength across the entire length of the wood. In addition, the plywood has a physical stability, against warping, shrinkage before the changes of weather
To create a durable material plywood which has such outstanding advantages and replace and surpass natural wood in certain applications as well, requires a rigorous production process with good technology and raw materials.
Plywood manufacturing process has to obey a very strict technical requirements, select the raw materials carefully to make high quality veneers, then impregnated, dried, glued and hot pressed….. The quality of the product depends on these a lot. In addition, to make high quality plywood also requires the careful, enthusiastic and skillful workers. Therefore, despite the same production technology, the quality of plywood between the factories are not the same.
In this article, we will briefly introduce the most basic Plywood manufacturing process from which you will know how to produce a plywood.
- Firstly, the large wooden logs are peeled and cut into pieces according to the production requirement.
- These wooden pieces are put into a slicer machine to make thin veneers
- The veneers are then dried by sunlight or by a dryer machine until the target moisture content is reached. This will strengthen the cohesion when they are glued together in the next step.
- After covering the two faces of each thin layer with glue, the glued layers then are stacked. The adjacent veneers are placed horizontally 90 degrees to each others. This will create a stronger cohesion.
- After getting the thickness as requirement, the veneers will be put into hot hydraulic press. The press time and temperature depend on the wood species used, the resin used, and the press design.
- Following the hot press, the corners and surface of plywood may undergo trimming and sanding operations. The small bug on a plywood surface (if any) will be repaired to create finished products.