To ensure the longevity of the board material, the bonding strength must first meet the standards.

Why do some kitchen cabinets last a very long time, while others warp and delaminate after only a few years? To understand this, we must first look at the materials used in the cabinets. As the saying goes, for a cabinet to last, its strength must first meet certain standards. Below, we will explain this in detail.

What is bonding strength? There are two main indicators of bonding strength in sheet materials: internal bonding strength and surface bonding strength.

Internal bond strength is one of the main indicators for measuring the physical and chemical properties of board materials. It is also a key point for the quality inspection and control of board products. It can reflect the quality of bonding between fibers inside the board. The higher the value, the better the board’s ability to withstand temperature changes, the higher the bonding quality, and the less likely it is to have problems such as delamination and cracking.

Average density, core layer density, type of adhesive, amount of adhesive applied, hot-pressing temperature, and hot-pressing pressure all have a significant impact on the internal bond strength of the board. Among these factors, increasing the core layer density will directly increase the internal bond strength of the board; increasing the amount of adhesive applied will increase the area of ​​the board covered by the adhesive, thereby strengthening the bonding ability between fibers and improving the internal bond strength of the board.

Surface bond strength reflects the processing and usability of a board product. If this performance is substandard, problems such as structural loosening, delamination, and detachment of decorative surfaces may occur during use. If the board surface is rough and has poor uniformity, its surface bond strength will be weaker.

Optimize hot pressing process

The three key elements of hot pressing are hot pressing pressure, hot pressing temperature, and hot pressing time. Advanced hot pressing equipment ensures uniform stress on the board; precision digital pressure gauges accurately control the hot pressing temperature; and professionals assess factors such as the board's moisture content and density to determine the appropriate hot pressing time. These three measures work together to ensure that the core layer of the board is sufficiently and evenly heated after the hot pressing process, resulting in increased core layer density and higher internal bond strength.

Strictly control the glue application process

The glue application process is a process that tests experience, eyesight, and hand speed. Professional technicians are assigned to the board and strictly follow the standards required by the process to ensure that "not a single bit of glue is spilled on the board and the position is not off." They maintain sufficient glue application and spread it evenly, so that the area of ​​the board covered by the environmentally friendly adhesive is increased, the bonding ability between the fibers is enhanced, and thus the internal bond strength of the board is improved.

Upgrade sanding process

Upgrading the sanding process for boards, for example, increasing the sanding of a single board surface from two times to three times in the rough sanding process, is to achieve better quality. Multiple sanding treatments on the board surface can remove the pre-cured layer, resulting in a smoother, flatter surface and better surface bonding strength.

Both surface and internal bond strength meet the standards, and the board is strong and tough, which ensures its longevity!