The rubber diaphragm market continues to expand and the existing production process needs to be improved.

The rubber diaphragm, also known as the rubber diaphragm, is a rubber seal that is mainly used in devices such as regulating valves, valves, switches, automatic mechanical follow-up devices, and counters. The rubber diaphragm has the advantages of long service life, good compositeability, low production cost, and high reliability. According to different application scenarios, rubber diaphragms can be divided into diaphragm valve diaphragms, solenoid valve diaphragms, rolling diaphragms, pneumatic valve diaphragms, deluge valve diaphragms, etc.

The main raw material of rubber diaphragm is rubber, including EPDM rubber, fluorine rubber, silicone rubber, natural rubber, PTFE rubber, chloroprene rubber, etc. Fluorine rubber has the advantages of corrosion resistance, aging resistance, heat resistance, oil resistance, and oxidation resistance, making it an ideal raw material for rubber diaphragms. At present, my country’s fluorine rubber production technology is relatively weak, product output and quality cannot meet market demand, and the country is highly dependent on foreign countries. Against this background, Chinese companies mostly use EPDM rubber, natural rubber and chloroprene rubber as raw materials to prepare rubber diaphragms.

The main production method of rubber diaphragms is flat vulcanizer molding. The process includes heating, vulcanization, molding, heat shrink molding, etc. The flat vulcanizing machine molding method is a traditional production method for rubber diaphragms in my country. This method has the advantages of low operating cost and good safety, and is suitable for large-scale production. However, the rubber diaphragms produced using this method have single specifications, poor aesthetics, and uniformity. Due to its shortcomings such as poor performance, its process flow is still being continuously improved.

According to the “2023-2027 Rubber Diaphragm Industry In-depth Market Research and Investment Strategy Suggestions Report released by the Industrial Research Center, rubber The main application areas of diaphragms include water pumps, air pumps, metering valves, solenoid valves, household appliances, regulating valves, etc. Driven by market demand, the development space of the rubber diaphragm industry continues to expand. The global rubber diaphragm market will reach 390 million yuan in 2022. It is expected that the global rubber diaphragm market will maintain a compound annual growth rate of more than 6.0% from 2023 to 2027, and its market size will exceed 550 million yuan by 2027.

The global rubber diaphragm market is mainly concentrated in Europe, the United States and China, with Europe accounting for nearly 40% of the global market. French EFFBE, American Garlock, and Japanese Fujikura Rubber Co., Ltd. are world-renowned rubber diaphragm manufacturers. The main rubber diaphragm manufacturers in my country include Ningbo Qiaoshi Rubber and Plastic Co., Ltd., Guizhou Jingzhong Rubber and Plastic Industrial Co., Ltd., Hebei Hengshui Dazhong Rubber and Plastic Co., Ltd., etc.

          Industry analysts said that the downstream application range of rubber diaphragms is relatively wide, and driven by market demand, the industry development space continues to expand. After continuous development, the scale of my country’s rubber diaphragm industry has continued to expand, and the product types have become increasingly rich. However, due to factors such as raw materials and technology, there is still a gap in the quality of my country’s rubber diaphragms compared with overseas developed countries, and there is still much room for improvement in the future.