Differences between multilayer board and plywood

There is not much difference between the two, the only difference is that the production methods are different.
Plywood is made of three or more layers of solid wood veneer or thin plates by gluing and hot pressing. Multilayer boards are generally made by processing the inner layer graphics first, then printing them into single or double sided substrates, and then incorporating them into the designated layers for heating and pressure bonding.
1. Generally, the fabrication method of multilayer board is to make the inner layer pattern first, then make a single or double sided substrate by printing and etching, and incorporate it into the designated interlayer, and then heat, pressurize and glue it. As for the later drilling, it is the same as the plating through hole method of double-sided board.
In 1961, Hazelting Corp. of the United States published Multiplanar, which is a pioneer in the development of multilayer boards. This method of multilayer boards is almost the same as the current method of making multilayer boards by plating through holes. After Japan set foot in this field in 1963, various conceptual schemes and manufacturing methods related to multilayer boards were gradually popularized all over the world. As the transistor has entered the era of integrated circuit, the application of computers has become more and more popular. Due to the demand for high functionality, large wiring capacity and good transmission characteristics have become the focus of the appeal of multilayer boards.
2. Plywood is a three-layer or multilayer board like material made of wood segments that are peeled into veneer or sliced into thin wood by wood planing, and then glued with adhesives. Usually, odd layers of veneer are used, and the fiber directions of adjacent layers of veneer are perpendicular to each other.
Plywood is one of the commonly used materials for furniture and one of the three major wood-based panels. It can also be used for aircraft, ships, trains, automobiles, buildings and packaging boxes. A group of veneers is usually glued with each other perpendicular to the grain direction of adjacent layers. Usually, the surface and inner layers are symmetrically arranged on both sides of the central layer or the core.
The slabs made of glued veneer in a crisscross manner in the direction of wood grain are pressed with or without heating. The number of layers is usually odd, and a few are even. There is little difference in physical and mechanical properties between vertical and horizontal directions. Common plywood types include plywood, plywood, etc. Plywood can improve the utilization rate of wood, which is a main way to save wood.