PVC foam board need to pay attention to detailsPVC foam board need to pay attention to details
Crusted low-foam PVC plastic sheet can be widely used in the construction of formwork, interior decorative doors, decorative panels, etc. It is a new type of energy-saving construction material that replaces wood with plastic and steel. At that time, environmental protection was increasingly paid attention to by the world. The market demand for such energy-saving new materials is increasing. This article mainly starts from the production practice of skinned low-foaming PVC plastic sheet, discusses the quality problems and the causes that occur during the production process, and strives to explain it theoretically.
Compared with other plastic extruded products, the low-foam PVC plastic products produced by skinning are not only required to be outstandingly plasticized under a certain melt pressure, but also have the size, number and uniformity of cells, skin thickness, hardness, etc. Corresponding skill requirements. The quality of the foam is not only related to the formula and raw materials, but also directly affected by the shearing function of the extruder screw.
The influence of factors such as melt pressure, temperature, extrusion (traction) speed, die lip gap, setting template gap, cooling water temperature and other factors.
Therefore, compared with rigid plastic products, skinned foamed plastic products are more difficult to control by extrusion process. There are many unsolved topics in practice and theory that are worthy of research and treatment by professional and technical personnel.If you want to know more about it please do not hesitate to contact me. WhatsApp:+86-15966835076.