What is the pressure of plywood hot press

In the production process of plywood, the hot press is a crucial equipment. It applies a certain pressure and temperature to make the multiple layers of veneer tightly bonded together, thus forming a plywood with high strength and stable quality. The pressure setting of the hot press directly affects the quality and performance of the final product. So, what is the pressure of the common 400 tons (t), 500 tons, 600 tons, 800 tons and 1000 tons plywood hot press?

First of all, it should be clear that the "tonnage" of the hot press does not represent the pressure value when it is actually working, but refers to the maximum design capacity or rated pressure of the equipment. In actual production, the pressure setting of the hot press needs to be comprehensively considered according to specific production requirements, board thickness, resin type and other factors.

Generally speaking, the pressure range of the plywood hot press is between 0.8MPa and 1.2MPa. This range of pressure can ensure that the resin fully penetrates into the board during the hot pressing process, so that each layer of the board is tightly bonded, so as to achieve the ideal strength and hardness. For hot presses of different tonnages, the actual working pressure value may vary within this range, but usually does not exceed the maximum design capacity of the equipment.

For example, a 400-ton hot press has a maximum design capacity of 400 tons (i.e. 4000 kilonewtons, kN), but in actual production, in order to avoid problems such as sheet deformation or cracking, operators usually set the pressure in the range of 0.8MPa to 1.2MPa according to the specific situation. Similarly, the same is true for 500-ton, 600-ton, 800-ton and 1000-ton hot presses.

It is worth noting that the pressure setting not only affects the quality of the product, but is also closely related to production efficiency. Too little pressure may cause the sheet to be poorly bonded and the quality to decline; while too much pressure may cause problems such as sheet deformation and cracking, and even damage the hot press. Therefore, operators need to flexibly adjust the pressure setting according to the actual situation to ensure the stability of product quality and the optimization of production efficiency.

The pressure setting of the plywood hot press is a complex and critical process that needs to be comprehensively considered based on multiple factors. In actual production, operators should strictly follow the production process requirements to ensure the production of high-quality and high-performance plywood products.