Silicone rubber extrusion process in the actual production may encounter a variety of common problems, the following are some possible problems and solutions:

Uneven extrusion: In the extrusion process, the silicone rubber may appear uneven extrusion or extrusion speed is inconsistent, resulting in unqualified finished products.

Solution: Check the adjustment parameters of the extruder to ensure that the parameters such as extrusion speed, temperature and pressure are properly adjusted. Parts such as die heads, extrusion outlets and molds can also be checked to ensure they are clean and free of clogging.

Bubbles and pores: During the extrusion process, bubbles and pores may appear in the silicone rubber, affecting the appearance and performance of the product.

Solution: Ensure that there is no gas residue at the feed port of the extruder, and adjust the extrusion parameters to reduce gas adsorption. The silicone rubber can be degassed before extrusion to avoid gas production during the extrusion process.

Size deviation: The finished size may not conform to the design requirements.

Solution: Check whether the extrusion speed of the extruder and the mold design are suitable. Adjust extrusion speed and mold design to ensure uniform extrusion and dimensioning.

Surface defects: Scratches, dents and other defects may appear on the surface of the finished product.

Solution: Check the surface quality of the mold and the state of the extruder. Ensure that the mold surface is smooth without scratches, and the temperature and pressure of the extruder are stable to reduce surface defects.

Poor flow: silicone rubber may have problems such as poor flow and blockage during the extrusion process.

Solution: Clean the feed system of the extruder to ensure that the feed port is unimpeded. Check the viscosity and fluidity of silicone rubber and adjust the extrusion parameters to suit its characteristics.

Mold wear: Extrusion molds may wear due to long-term use, affecting product quality.

Solution: Check the wear of the mold regularly, and replace the mold with serious wear in time. Ensure the mold is well maintained to ensure the quality of extruded products.

Temperature control problems: During the extrusion process, unstable temperature control may affect the extrusion performance of silicone rubber.

Solution: Ensure that the temperature control system of the extruder works properly to avoid excessive temperature fluctuations. According to the characteristics of silicone rubber, the extrusion temperature is adjusted to maintain a stable extrusion performance.

To solve these problems, it is necessary to consider extruder, silicone rubber material, mold design and other factors. When problems are encountered, they can be solved by adjusting parameters, optimizing processes and maintaining equipment regularly. If necessary, you can seek the advice and assistance of a rubber materials engineer or extrusion process expert.