1. Definition of foam material
Foamed plastic, also called foamed plastic, is based on plastic and contains a large number of bubbles. It can be said to be a composite material filled with gas.
2. Classification of foamed sheets
According to different foaming ratios, it can be divided into high foaming and low foaming. According to the softness and hardness of the foam texture, it can be divided into rigid, semi-rigid, and flexible foams. According to the cell structure, it can be divided into closed-cell foam and open-cell foam. The common pvc foam sheet is a rigid closed-cell low-foam sheet.
3. Application of pvc foam sheet
PVC foam sheet has the advantages of chemical resistance, weather resistance, flame retardancy, etc., and is widely used in many aspects, including display panels, signs, billboards, partitions, construction boards, furniture boards, etc.
4. The key factors to evaluate the quality of foamed sheet
For foamed materials, the size and uniformity of the cells are the key factors affecting the quality of the sheet. For low magnification foamed sheet, the cells are small and uniform, the foamed sheet has good toughness, high strength and good surface quality. From the perspective of reducing the density of the foamed sheet, only small and uniform cells have the possibility of further reducing the density, and it is difficult to further reduce the density if the bubbles are large and scattered.