Guangxi Hengxian Yige Wood Co., Ltd. is an enterprise engaged in the research and development, production and sales of various kinds of wood, with equipment and technology at the world’s advanced level, independent research and development capabilities and a complete quality control system. Plywood has been one of the main products developed and produced by our company.
Plywood is one of the most commonly used materials for furniture, and is one of the three main types of plywood used for aircraft, ships, trains, automobiles, construction and packing boxes. A group of veneer is usually glued together vertically in the direction of the wood grain of adjacent layers, usually with the surface and inner plies symmetrically positioned on either side of the central layer or the core. The glued veneer is pressed in the direction of the wood grain in a staggered pattern with or without heat. The number of layers is generally odd, but a few are even. The difference in physical and mechanical properties in the longitudinal and transverse directions is small. Commonly used types of plywood are triple plywood, plywood, etc. Plywood can improve the utilization rate of wood, which is a major way to save wood.
I. Types of plywood
1、according to the structure of the board can be divided into: plywood, sandwich plywood, composite plywood.
2、Classified by adhesive performance: outdoor plywood, indoor plywood;
3、Categorized by surface processing: sanded plywood, scraped plywood, veneered plywood, pre-finished plywood;
4、Classified by treatment: untreated plywood, treated plywood (such as impregnated with preservatives);
5、Classified by shape: flat plywood, formed plywood;
6、Classified by use: common plywood, special plywood.
II.Plywood types – ordinary plywood classification
Common plywood used to be directly called plywood, common sub-categories of common plywood are.
1, broadleaf species plywood: species such as basswood, ash, birch, poplar, elm, maple, etc.
2, coniferous species plywood: species such as horsetail pine, Yunnan pine, larch, spruce, etc.
There are four grades classified by special appearance requirements: special, first class, second class and third class, of which first, second and third class ordinary plywood is the main grade.
The base material of plywood is veneer or wood cut into squares.
It is a three-ply or multi-ply colored board made of thinly cut wood, which is bonded with a special adhesive. Plywood is a type of man-made panel that is often used in furniture production to save wood and improve its utilization. The thickness is determined by the number of layers of the bonded board, and the more layers of the inner board are configured, the thicker it will be, except for the surface board. It can be roughly divided into several categories such as 3, 5, 9, 12, 15, 18mm, etc.
Post time: Aug-17-2022