How to distinguish between PVC skinned board and PVC co-extruded board?

Simply put, pvc skinned board generally refers to PVC skinned foam board, while PVC co-extruded board is a board extruded by co-extrusion of two or more different materials or materials of different colors.
The pvc foam board is divided into free foaming and skin foaming (single-sided skinning, double-sided skinning), and the co-extrusion board is co-extruded by two machines, and the middle thick foam surface layer is not foamed. Relatively speaking, the surface layer of the co-extruded board is harder and has better performance

First, the production process of the two is different

Both pvc crusted sheet and pvc co-extruded sheet are high-density foamed sheets, both of which have a hard appearance, but they are actually different in the production process. The co-extruded sheet needs two machines to operate together to produce out, and the crusted board can be produced by an ordinary machine, so in terms of cost, the PVC co-extruded board is relatively high.

Second, the hardness of the two is different, the latter is far greater than the former
In order to obtain greater profits, many manufacturers use crusted sheets as co-extruded sheets, earning a lot of price difference from the middle, and for buyers, it may lead to poor engineering quality, because the hardness of co-extruded sheets is far Much bigger than the crusty one.

3. Whether it can be treated with paint
The crusted board can be treated with paint, while the co-extruded board does not need to be painted, and it cannot be painted because the surface is too smooth, and the paint and impurities cannot be adsorbed on its surface.

Four, one is matte surface, the other is glossy surface
The PVC skinned sheet is a matte finish, while the co-extruded sheet is a glossy finish. The surface of the co-extruded board is like a mirror, which can reflect any object, but the crusted board is matte and cannot reflect the object. We can clearly see it from the above picture.

Through the above four points, it can be seen that the production cost of pvc co-extrusion board is higher than that of the skinned board, and the corresponding price is much higher than that of the skinned board.