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Plywood is the leading product among my country's wood-based panels. It is also the product with the earliest start, fastest development speed and strongest international competitiveness among my country's wood-based panel products.
Plywood has many excellent properties, such as low bulk density, high specific strength, relatively easy processing, etc., and is widely used in the furniture and decoration industry.
Stability and environmental protection are the constant pursuit of artificial boards
In a broad sense, plywood is a "sandwich" structure consisting of a face sheet, a core sheet, and a back sheet, with 3 or 5 layers, etc.
The main difference between the two types is the core board style. If the core board is made of solid wood glued together, it is the "blockboard" we are familiar with. Therefore, blockboard is plywood with a solid wood core.
Blockboard, with its inherent superior properties, has been widely used in custom furniture, both in solid wood and panel form, in recent years. With the continuous advancement of production technology and the guidance of market demand, stable performance and more environmentally friendly characteristics will continue to be the direction of improvement for plywood such as blockboard.
How to achieve stability and environmental protection? As far as the production process of blockboard is concerned, the key lies in its structural design and the selection of adhesives.
Therefore, whether the structural design is reasonable, whether the adhesive is environmentally friendly and formaldehyde-free, and whether the pressing process is scientific are all key to the quality of the blockboard products.
So, from the perspective of current process technology, is there a wood board product that meets the requirements of high strength, environmental protection, and rich usage scenarios (can be pasted with veneers, can be paint-free)?
The author learned that a new type of board called "vertical and horizontal laminated formaldehyde-free solid wood Keding board" may give us more imagination about "high-performance environmentally friendly solid wood artificial board".
▲Real shot of solid wood Keding board
Vertical and horizontal lamination is the key method for stable performance
The key to the stable performance and high strength of this solid wood Keding board lies in the "vertical and horizontal lamination" process. For the convenience of description and accuracy of expression, and to allow everyone to better understand, first mark and name its components:
▲Actual photo of the five-layer structure of solid wood Keding board
▲Schematic diagram of the five-layer structure of solid wood Keding board
As can be seen from the actual photos and schematic diagrams, the solid wood Keding board has five layers, namely two surface and back boards, two lining boards and the core board in the middle.
Furthermore, the front and back panels and the inner lining are placed symmetrically, sandwiching the core panel in between. This "odd-number-of-layer, centrally symmetrical arrangement" helps improve panel stability. However, the true secret to its strength lies in the "vertical and horizontal stacking" of the five-layer structure.
The core board is mainly made of small-sized solid wood square materials glued together. The production process can be referred to as follows:
▲Brief introduction to core board manufacturing process
▲Brief description of the back panel and inner lining
After the five-layer structure of the board is completed, the "vertical and horizontal lamination" assembly method is adopted, in which the surface and back layers are glued to the inner lining layer in the same direction and then glued to the core board longitudinally.
▲Schematic diagram of the gluing of five layers of solid wood Keding board
MDI glue is the core guarantee of environmental protection and formaldehyde-free
The main production processes of artificial decorative panels, including substrate pressing and lamination, require the use of adhesives, and the use of conventional adhesives inevitably releases formaldehyde.
To this end, people have been committed to the research of low-formaldehyde glue or formaldehyde-free glue, and the MDI glue used in solid wood Keding board is an adhesive that does not release formaldehyde.
MDI, short for isocyanate adhesive, is a dark reddish-brown liquid product suitable for the manufacture of high-performance wood-based panels. It offers exceptional safety and stability, and can even be used in the manufacture of artificial organs such as artificial blood vessels and heart valves.
The environmentally friendly boards made of MDI not only have zero formaldehyde release from the base material, but also have close to zero release of benzene and TVOC, causing zero harm to human health.
In addition, Wanhua's MDI technology is a nationally protected patent, and its importance is comparable to that of aerospace and nuclear technology. Currently, there are only seven companies in four countries in the world that can produce MDI, and Wanhua is the only company in my country that can produce MDI. Because of this, this technology also won the first prize of the National Science and Technology Progress Award in 2007.
Application of vertically and horizontally laminated formaldehyde-free solid wood Keding board
Solid wood Keding board achieves a perfect combination of stable performance and environmental protection and formaldehyde-free through the vertical and horizontal lamination structure and the use of MDI glue. As a new type of solid wood artificial board, solid wood Keding board is also widely used.
As we all know, veneer lamination is a key process for diversifying and enriching the styles and uses of artificial boards. The five-layer laminated structure of solid wood Keding board has a high surface flatness. After sanding, it is suitable for surface decoration of various forms and materials.
Wood veneer
Veneer panels are made by processing the wood of precious tree species into thin wood slices with a thickness of 0.1-1mm, and then sticking the thin wood slices on a base plate.
It is characterized by beautiful patterns, strong three-dimensional effect and rich colors. It is mainly used for facing wooden doors, wooden skirts and furniture.
Edge banding is very important for veneer-faced panels, as it affects the overall aesthetics. It is understood that the manufacturer of this solid wood Keding board can provide seamless edge banding for veneer-faced panels, ensuring a perfectly consistent appearance.
Melamine facing paper veneer
Melamine board veneer is made by placing veneer paper of different colors and textures in a melamine resin adhesive, which is then dried to a certain degree of solidification before being laid on the board. It is fireproof, wear-resistant, waterproof, has high hardness, good heat resistance, and is easy to clean.
Solid wood Keding board with "triamine" finish can be quickly applied to various scenarios and is suitable for any demand for panels in whole-house customization.
PP film veneer
PP film is a paint-free furniture surface decorative film made of polypropylene (PP) as raw material.
The solid wood Keding board is covered with PP film, which has excellent sealing, impact resistance, high temperature resistance and other excellent properties.
For a more detailed introduction to PP film, please click the link below to read.
<<Environmentally friendly polypropylene (PP) decorative film>>
Conclusion
As a new type of solid wood plywood, Keding board represents a breakthrough in structural stability and environmental friendliness. Its combination of five layers of laminated laminate, vertically and horizontally, and formaldehyde-free MDI adhesive is undoubtedly the core guarantee of its quality and performance. Whether it's a veneer finish with seamless edge banding or a triamine finish with PP film, Keding board can handle it with ease.
It has a variety of styles, is paint-free, stable and environmentally friendly. This is exactly the product needed for furniture design and production.