The application of domestic polyurethane rubber rollers began in the early 1980s, and then the market demand increased. The spare parts of polyurethane rubber rollers in the equipment introduced in the papermaking, steel, printing and dyeing, textile and other industries are in urgent need of localization. In technological transformation and technological innovation, polyurethane rubber rollers are urgently needed to replace ordinary rubber rollers to improve production efficiency and save energy consumption. For example, the cost of removing 1kg of water from the drying part of a paper machine is about 10 times higher than that of the pressing part. Polyurethane rubber is used to replace natural rubber for the roller surface material, and the linear pressure it bears can be increased by 2 to 3 times, which improves the dehydration rate of paper.

The horizontal production process of 　　 polyurethane rubber roller belongs to the technical field of rubber chemical industry. The technical problem to be solved is to provide a horizontal production process of a large polyurethane rubber roller to improve the overall physical properties of the rubber roller. The horizontal production process of large polyurethane rubber rollers includes melting and mixing of raw materials, synthesis of prepolymers, pretreatment of rubber roller casting molds, casting molding, vulcanization and grinding processing steps; among them, the pretreatment steps of rubber roller casting molds are The rubber roller casting mold is placed horizontally and heated to 80-85°C; the casting molding step is casting molding under the condition that the temperature is maintained at 80-85°C. This method improves the casting method, and the product has fewer defects, good appearance, and excellent overall performance.