1 naked foaming:
Contrary to the concept of adsorption foaming, the Faux Stone panel mold will not be pre placed with the surface fabric, and the surface of the foamed product is the Pu layer. After surface treatment, the finished product shows rich texture of simulated stone. At present, some manufacturers use this kind of foaming process to make foaming simulation faux stone.
2 adsorption foaming：
Before pouring the mold, the simulated stone silica gel mold and the pretreated surface texture layer are placed in the mold cavity, which are completely bonded through air extraction and adsorption, and then PU material is poured. After foaming, the surface layer of PU products with mold is closely bonded with the texture layer of the PU faux stone panel.
Faux Stone panels with high elasticity and high surface simulation requirements will use this foaming process more often. This process has high cost, high requirements for workers' technical ability, complex process and low yield.
3 single hardness foaming:
It is the simplest foaming, single formulation, single pouring and no other auxiliary means. The foam products presented only have a single hardness.
4 double hardness foaming：
Double hardness foaming is to distinguish different parts of the Faux Stone panel layer and create different hardness layers.
The realization method is to adopt different areas and two side areas for pouring respectively, and to achieve the distinction of double hardness or multi hardness of the PU faux stone panel by means of the placement angle of the mold, adding a material separation groove between the two side wings and the surface area, and adding inserts on both sides of the foam.This foaming process can also achieve more hardness n the surface of the PU faux stone panel, but generally not more, because the cost will be higher and the requirements for molds and processes will be more complex. Sometimes one density can make two different hardness.
Manufacturers who master this foaming process of faux stone panel generally need to provide adjustment schemes for different combinations. They need to formulate a variety of forming schemes according to different process requirements, carry out experiments and improvements, and finally determine the process composition.
At present, new technologies are extended, such as andotto's horizontal foaming DHH and r-comfort technologies.
5 horizontal foaming DHH：
It is also called double-layer foaming technology. The foaming strength and hardness of the upper and lower layers are different. The upper layer is softer, and the lower layer can ensure the average stress distribution. The Faux Stone panel produced by this technology can improve the hardness and wear resistance of the product surface.
Twice foaming process: design a middle layer mold cover plate, first pour the bottom layer and foam and solidify, then open the cover plate and pour through the closed mold of the upper cover, so as to form a double-layer foam Faux Stone panel through different formulas and pouring.
6 R-comfort：
The surface of Faux Stone will have different textures. For this type of foam and its forming mold, the surface of foam will produce more complex lines during the forming process, which needs to be realized through complex molds.
High elasticity and high surface hardness polyurethane foam is the development direction of wall decoration panel in the future.
In order to meet the most stringent emission control regulations, BASF also optimized the production process of polyether polyols. Polyether polyols are used to produce elastoflex polyurethane foam. The optimized production process enables BASF to produce special polyether polyols with low cost, high performance and low VOC emission.
In the test conducted by sgskorea, the world's leading testing agency, elastoflex's acetaldehyde and formaldehyde emissions were reduced by more than 30%, which helped to improve the air quality in the car and the health of car drivers. The field test also shows that the newly developed polyurethane composite has excellent fluidity, the product defect rate is reduced, and the productivity of the pu faux stone panel line is improved.
Faux Stone panel has a large area in home decoration, which directly determines that the amount of materials used is also relatively large.
The traditional wall decoration, especially the exterior wall decoration, mostly uses natural stone. Due to the difficult exploitation of stone and the increasing processing and transportation costs year by year, people are more and more inclined to adopt new wall decoration materials that are more portable, environmentally friendly and environmentally friendly. Pu Faux Stone panel makes transportation and installation very convenient, and the cost is also reduced. It can be predicted that Pu Faux Stone panel will be more and more applied to wall decoration. It will constantly update its own material performance and decorative effect, become the first choice of wall decoration materials, and bring better experience to people's life.
Polyurethane foam is a new type of material with certain elasticity. It has many pores, low density and good resilience. When it is used for indoor decorative walls, it will have good effects of attraction, noise reduction and heat preservation.
Many plastic products cannot be used for a long time due to their own vulnerability. However, soft polyurethane foam has good wear resistance, strong self stretching and tear resistance, which makes it have superior performance. Compared with the traditional simulated stone wall decorative panels, it has a long use time and high safety. The soft polyurethane foam faux stone panel has its own wear resistance and is used as an indoor wall decorative board, which is durable.
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