## Multi -layer ceiling coatings: structure analysis, physical properties and technical superiority over metal sheets\r\n\r\n\r\n\r\n### a new approach to covering the roof using U.PVC polymer composites\r\n\r\nChoosing a roof cover is one of the most vital decisions in any construction project that directly affects the durability of the structure, the comfort of the residents and the long -term energy costs. Shadow Sazan Polymer Company, as the largest and most advanced manufacturer of U.PVC ceiling coatings in Iran, proudly offers a modern and engineered solution to overcome the disadvantages of traditional ceilings (such as metal and cement sheets). Our products, including the well -known series of Sino ** and ** Poly Popan **, are the result of the combination of polymer metallurgical knowledge and advanced production technology that bring you a fully insulated, beautiful, durable and economical ceiling.\r\n\r\n---\r\n\r\n### Technical and Structural Analysis of U.PVC Ceiling Coatings\r\n\r\nThe real power of our ceiling covers lies in their unique construction technology and formulation. Here\'s a deep description of this technology.\r\n\r\n### 1. Construction Technology: The process of covarogen and layer structure\r\n\r\nUnlike traditional monolabial sheets, our U.PVC panels are produced in a complex process called ** Co-Extrusion **. In this technology, several layers of different materials are melted and combined simultaneously, forming an integrated sheet with engineered properties in each layer. The usual structure of these sheets is as follows:\r\n\r\n** Surface Layer: ** This layer, which is exposed to atmospheric factors, is made of extremely resistant polymer materials such as ** ASA (acrylonitrile style acrylate) ** or PMMA. These compounds are specifically designed for maximum resistance to UV (UV) of the sun. This layer guarantees that the color of the ceiling has been constant for many years and prevents the phenomenon of photos-degradation that causes fragility and erosion of the polymer.\r\n** Core Layer: ** This layer, which forms the main thickness of the sheet, is made of pure U.PVC with special additives. This layer provides a solid, rigid and freight structure for the sheet. In many models, this layer has a microscopic foam structure, with high air bubbles being trapped. This structure greatly reduces the weight of the sheet and, more importantly, acts as a ** ** thermal and acoustic insulation **.\r\n** Bottom Layer: ** This layer is also made of high quality U.PVC and creates a smooth, resistant surface of corrosive vapors and gases (which may be emitted from the interior of the niches or factory).\r\n\r\n### 2. Profile Design and Panel Geometry: Optimization for sealing and mechanical strength\r\n\r\nIn addition to the multilayer sheets, the shadow maker of the polymer produces certain profiles such as the ** \"single wall panel\" **. This profile, which is also visible in the images, despite being single -walled, due to its specific geometric form (arched and with its lock edges
Tehran
