In May 2026, information from the State Intellectual Property Office showed that Guizhou Tire Co., Ltd. applied for a patent titled “An all-steel agricultural radial tire anti-sidewall bulge structure and its preparation process.”
The application publication number is CN121989595A, the application number is CN202610367993.9, the application publication date is May 8, 2026, and the application date is March 24, 2026.
The patent summary shows that the invention relates to the field of tire manufacturing technology and discloses an all-steel agricultural radial tire anti-side bulge structure and its preparation process.
The anti-sidewall bulge structure includes an inner lining layer, irradiated carcass reinforcing film and carcass ply arranged in sequence from the inside to the outside of the tire sidewall area.
The preparation process includes the following steps: S1, prepare the rubber composition film; S2, prepare the irradiated carcass reinforced film; S3, accurately fit the irradiated carcass reinforced film to the designated position on the outer surface of the inner liner; S4, fit the carcass cord outside the irradiated carcass reinforced film; S5, perform overall tire shaping, shaping and vulcanization.
By using high-energy electron beam irradiation pre-vulcanization to strengthen the film and accurately position and fit the technical solution, it can provide rigid support for the carcass ply, uniform stress distribution, eliminate local bulges on the sidewall, and solve the problem of periodic bulges and depressions that are prone to occur from the tread groove to the sidewall when the tire is inflated and under load.
Guizhou Tire was established in 1996. It is an important enterprise in the domestic tire industry. It focuses on tire research and development, production and sales. It has advantages in the entire industry chain and has significant investment value.
The company’s main business is tire research and development, production and sales. The Shenwan industry it belongs to is automobiles – auto parts – tires and wheels, and involves concepts such as equity participation in private banks, state-owned assets reform, and mid-cap equilibrium.
In 2025, Guizhou Tire’s operating revenue will reach 10.946 billion yuan, ranking 6/22 in the industry, higher than the industry average of 10.395 billion yuan and the median of 5.119 billion yuan.
Among the main businesses, the tire sales business was 10.87 billion yuan, accounting for 99.30%.
In terms of net profit, it will be 623 million yuan in 2025, ranking 8/22 in the industry, which is 701 million yuan lower than the industry average and 294 million yuan higher than the median.
Guizhou Tire Co., Ltd. has a rich patent portfolio recently, covering many aspects such as tire molds, production processes, and safety devices.
For example, there are many invention patents such as an automatic carding device for tire mold air holes, an impact-resistant foot switch for a solid tire mold ejection machine, and so on.
The application and publication of these patents demonstrate Guizhou Tire’s continuous investment and efforts in technological innovation, help enhance the company’s competitiveness in the tire market, and inject new vitality into the development of the entire tire industry.
In the future, Guizhou Tire is expected to rely on these technical advantages to further expand the market and provide consumers with higher-quality tire products.
