Planar embossing of plastic-wood decking imitates wood grain, that is, after the molding and extrusion production of plastic-wood flooring products is completed, the plastic crust on the surface layer of the flooring is ground by a sander, and then the plastic-wood embossing machine (heated by a wood grain-imitating flower roller) is used to hot-press the plastic-wood pattern on the surface layer of the plastic-wood flooring without plastic crust. Because the plastic-wood material itself has been solidified and shaped, the pressed wood-like road is shallow, has no sense of layering, has poor anti-skid effect, and the plane grain is easily blurred and degraded during use. This kind of wood-like plane grain is a technology that is gradually heading for desolation.

With people's increasing demand for outdoor landscape quality, a single flat hot-pressed wood-grain-imitated plastic wood floor product can no longer meet the aesthetic needs of customers, and people's demand for spiritual level is getting higher and higher, and it tends to approach the original state of nature. Therefore, in order to meet the requirements of more lifelike, more beautiful and more practical plastic-wood flooring, antique deep-pressed embossed plastic-wood flooring products came into being. The grain of deep embossed wpc decking tends to be lifelike wood imitation and antique. At present, the most widely used methods are antique mixed color flow deep embossing (high imitation of old boat wood/old boat wood) and online embossing. Online embossing is commonly known as hot embossing, that is, embossing treatment is carried out before the temperature of the plastic-wood profile at the outlet of the extrusion molding die is lowered, which largely retains the embossed lines of wood-like patterns, increases the stereoscopic impression of plastic-wood flooring products, has obvious visible surface fluctuation and warm and firm touch, and is the future development direction of plastic-wood flooring products.