What is the difference between multilayer board and plywood?

There is not much difference between the two, the advanced difference is the different production methods. Plywood is made of three or more layers of solid wood veneer or veneer glued by hot pressing. The multi-layer board is generally processed by the inner layer graphics first, and then made into a single-sided or double-sided substrate by printing, and then included The specified layers are bonded under heat and pressure.
1. The production method of multi-layer boards is generally to do the inner layer graphics first, and then make a single-sided or double-sided substrate by printing and etching, and put it into the specified layer, and then heat, pressurize and bond it. The subsequent drilling is the same as the plated through hole method for double-sided boards.
2. Plywood is a three-layer or multi-layer board-like material made of wood segments that are peeled into veneers or sliced into thin wood, and then glued with adhesives. Usually, odd-numbered layers of veneers are used, and adjacent layers are The fiber directions of the veneers are glued perpendicular to each other.
Plywood is one of the commonly used materials for furniture and one of the three major boards of wood-based panels. It can also be used as materials for aircraft, ships, trains, automobiles, buildings and packaging boxes. A group of veneers are usually assembled and glued together according to the direction of the wood grain of adjacent layers perpendicular to each other. Usually, the surface board and inner layer board are symmetrically arranged on both sides of the center layer or core.
The slabs made of glued veneers criss-crossed in the direction of wood grain are pressed under heating or non-heating conditions. The number of layers is generally an odd number, and a few have even numbers. The difference in physical and mechanical properties in the vertical and horizontal directions is small. The commonly used types of plywood are three-ply board, five-ply board and so on. Plywood can improve wood utilization and is a major way to save wood.