Ministry of Industry and Information Technology: 1Mak October National Photovoltaic Calendering Glass increased production capacity by 70.5% compared with the same period last year
CTOnews.com November 28 news, according to the Ministry of Industry and Information Technology, from January to October 2022, the national photovoltaic Calendering glass production capacity increased by 70.5% compared with the same period last year. October showed a "significant increase in demand and a significant reduction in inventory". The average inventory in the industry is about 14 days, 7 days lower than at the end of September.
According to the data of China Architectural Glass and Industrial Glass Association, by the end of October, there were 39 photovoltaic rolling glass enterprises in China, with 402 production lines of 120 kilns, with a production capacity of 76,000 tons per day, of which 366 production lines of 103 kilns were being produced, with a production capacity of 71,000 tons per day. From January to October, the country's cumulative output was 12.725 million tons, an increase of 54.8 percent over the same period last year. Of this total, photovoltaic Calendering glass output in September was 1.612 million tons, an increase of 57.8 percent over the same period last year.
From January to October 2022, the average price of 2mm and 3.2mm photovoltaic calendered glass was 20.8 yuan per square meter and 26.9 yuan per square meter, down 14.0% and 7.7% from the same period last year. Among them, the average price of 2mm and 3.2mm photovoltaic calendered glass in October was 20.4 yuan per square meter and 26.2 yuan per square meter, down 8.9 percent and 9.5 percent from the same period last year.
CTOnews.com learned that one of the most important characteristics of photovoltaic glass is the high transmittance of sunlight. Photovoltaic glass needs to use ultra-white glass with higher light transmittance. Calendering method is mainly used for photovoltaic glass used in crystalline silicon cells, and floating process is mainly used for photovoltaic glass used in thin film cells. Ultra-white float glass is a kind of glass which is injected into the surface of liquid tin under the action of gravity to form a smooth surface. Ultra-white Calendering glass is made of molten glass through a metal roller with a special pattern on the surface.
Due to the higher light transmittance, Calendering is the main production process of photovoltaic glass. Due to the smooth surface of ultra-white float glass, some light will be reflected, resulting in low light transmittance of the glass. On the other hand, the front of the ultra-white Calendering glass is treated with a special suede surface to reduce the light emission, and the reverse side is treated with a special pattern, which greatly enhances the transmittance of sunlight at different incident angles.
