PVB diaphragm (PVB film) is the core component of laminated glass. The level of localization in the domestic market needs to be improved.

PVB diaphragm, also known as PVB film and PVB interlayer film, refers to a translucent diaphragm made of PVB (polyvinyl butyral POLYVINL). PVB diaphragm has the advantages of good toughness, high elasticity, high impact strength, high mechanical strength, strong adhesion, good light transmittance, strong weather resistance, and good heat resistance. It is one of the key adhesive materials for manufacturing laminated glass. one.

PVB diaphragm has excellent performance. The laminated glass made of this material has higher safety and can continuously withstand impacts, wind and rain; anti-theft, the glass can still stick together after breaking; sound insulation, it can effectively Reduce noise transmission; anti-UV, can effectively block more than 99% of harmful light and reduce UV radiation; energy-saving, can significantly reduce the passage of sunlight, thereby effectively blocking heat. Therefore, with its various advantages, PVB diaphragm laminated glass can be widely used in construction, automobiles, photovoltaics, military equipment, aerospace and other fields.

According to the“2023-2028 PVB Diaphragm (PVB Film) Industry Market In-depth Research and Investment Prospect Forecast Analysis Report” released by the Industrial Research Center shows that in recent years, benefiting from the rapid development of terminal application fields such as construction, automobiles, and aviation, the scale of the laminated glass market has continued to expand, which in turn has driven the increasing demand for PVB diaphragms and the continuous improvement of production capacity. China’s laminated glass market size will reach 28.63 billion yuan in 2022. As a result, the domestic PVB diaphragm market demand will reach 352,000 tons in 2022.

At the same time, the development of the PVB diaphragm industry is also driven by the continued favorable conditions for sufficient supply of raw materials, and the development speed of the industry continues to accelerate. In recent years, the number of companies entering the PVB resin market in my country has been increasing. The main companies include Wanwei High-tech, Dongcai Technology, Yifan Pharmaceutical, Gino Resin, Jiantao Special, etc. At present, domestic PVB resin production capacity is gradually being released, and its production capacity will exceed 400,000 tons in 2022. The sufficient supply of raw materials has created good conditions for the development of the PVB diaphragm industry, and domestic PVB diaphragm production is showing a continuous improvement trend.

But overall, domestic PVB diaphragm production is still lower than demand, and the market is in short supply. Domestic products are mainly concentrated in the middle and low-end markets, and the demand for high-end PVB diaphragms still depends on imports. Most of the companies in the domestic PVB diaphragm market are PVB resin manufacturers, mainly including Wanwei High-tech, Dongcai Technology, Jiantao Special, Deste, Huakai Plastic, Chuanwei Hongjin New Materials, Haocheng Industrial, etc., and local companies Compared with international giants such as Solutia, Sekisui Chemicals, and Kuraray, the company has a large gap in technology and scale. In the future, local companies will need to continue to improve their technology and increase product research and development efforts.

Industry analysts said that PVB diaphragms have excellent performance and can be widely used in automobiles, construction, photovoltaics, In many fields such as aviation and military industry, the market development prospects are broad. At present, Chinese companies are actively deploying the PVB diaphragm market and expanding production lines. However, due to technical limitations, domestic products are still mainly concentrated in the mid-to-low-end market. Aviation, military, and photovoltaic grade PVB diaphragm products still rely on imports. In the future, local companies will still It is necessary to continuously improve the technical level and increase product research and development efforts. There is broad room for domestic substitution in the domestic market.