Address: Liyuantun Industrial Zone, Wei County, Xingtai City, Hebei Province
1. Working principle
Extrusion molding is a process in which a plastic material is continuously pressed out through a mouth under certain conditions to make it a product with a cross-sectional shape.
As the rubber material moves forward along the screw, the viscosity and plasticity of the rubber material change as a result of mechanical and thermal effects, and it becomes a viscous fluid. According to the change of the rubber material during the extrusion process, the working part of the screw is generally divided into three parts: feeding section, compression section and extrusion section according to its different functions.
2. Cold feed extrusion
Advantages: saving heat refining equipment, easy to realize mechanization and automation, and because the main machine strengthens the shearing and plasticizing effect of the screw, the rubber compound can obtain uniform temperature and plasticity; improve the quality of extruded products and increase the surface finish , The extruded semi-finished product has relatively stable and consistent size specifications; the cold feed extruder is less sensitive to pressure and has great flexibility; the investment and production costs of the cold feed extruder are lower.
3. Equipment characteristics
Suitable for extruding rubber (EPDM, natural, butyl green, butyl, recycled), used in the production of building door and window sealing strips, composite strips of automobile sealing strips, single extrusion strips, and construction, electrical appliances, machinery, water conservancy Production of compact and foamed rubber products of different shapes such as belt, strip, tube, plate, etc.
Cold feed rubber sealing strip extruder: It is a kind of equipment that uses cold rubber to produce. The feeding method of the equipment is generally forced refrigeration feeding. The cold feed rubber extruder is characterized by high production efficiency and stable production. Generally, extruders are mostly used to produce sealing strips, rubber tubes and other products that can be produced by extrusion technology. The extruder is a rubber machine for extruding treads, inner tubes, hoses and rubber strips.