PVC co-extrusion foam board is a kind of board that uses two extrusion hosts to extrude the core layer and the upper and lower layers into the setting mold through the distributor. The biggest feature of this board is that the surface of the board is not foamed PVC resin, which is smoother and smoother than the surface of the crusted board, and it is easy to cause confusion because the co-extruded board and the crusted board are similar in appearance. For areas that require high requirements for board surfaces, PVC co-extrusion foam board is recommended. It can produce thicknesses above 3mm, and there will be no obvious scratches on the scraper surface test. The thinnest PVC co-extrusion foam board can only produce a thickness of 3mm, but it is widely used in engraving, standing advertising, home bathroom, building wall panels and other fields.
The manufacturing process of PVC co-extrusion foam board mainly includes raw material selection, formula design, processing technology and equipment selection. First of all, the selection of raw materials is the basis for the manufacture of PVC co-extrusion foam boards, and it is necessary to select raw materials with stable quality and excellent performance. Secondly, formula design is the key to the manufacture of PVC co-extrusion foam board, and it is necessary to determine the proportion of various raw materials and the type and amount of additives. In this process, it is necessary to experiment and adjust according to the performance requirements and processing technology of the product to determine the best formulation.
The processing technology is another important part of the manufacturing of PVC co-extruded foam board. According to different product specifications and requirements, different processing technologies can be adopted. In general, the processing process includes steps such as batching, mixing, melt plasticizing, extrusion, cooling and shaping, cutting and packaging. During processing, process parameters such as temperature, pressure, and speed need to be controlled to ensure the quality and stability of the product.
In addition to raw material selection, formula design and processing technology, equipment selection is also an important factor in the manufacture of PVC co-extrusion foam board. It is necessary to choose production equipment with advanced technology, high efficiency and strong reliability to ensure the quality of products and the stability of production. At the same time, equipment configuration and optimization are also required according to the production scale and market demand to improve production efficiency and reduce costs.
The advantage of PVC co-extrusion foam board lies in its excellent performance and wide range of applications. Compared with traditional PVC sheets, PVC co-extruded foam boards have better thermal insulation, sound insulation and decorative properties. At the same time, due to its simple production process and low cost, it has been widely used in construction, furniture, home appliances, automobiles and other fields. With the continuous improvement of environmental awareness and the development of technology, PVC co-extrusion foam board will be more favored.
In order to improve the performance and application scope of PVC co-extrusion foam board, the future research and development direction mainly includes the following aspects: first, improve the formula and process parameters to improve the performance and stability of the product; the second is to develop new PVC co-extrusion foam board varieties to meet the needs of different fields; The third is to explore the best reuse technology of PVC co-extrusion foam board to achieve sustainable use of resources.
In short, PVC co-extrusion foam board, as a new type of building material, has broad market prospects and development potential. In order to meet market demand and improve competitiveness, it is necessary to continuously strengthen technology research and development and innovation, improve product quality and application performance, and promote the sustainable development of PVC co-extrusion foam board.