75 Rubber sealing strip production line

Model XJ-75 XJ-90 XJ-120 XJ-150 Screw diameter (mm) 75 90 120 150 Draw ratio 20:1 20:1 20:1 20:1 Motor power (kW) 30 55 110 132 Screw speed (r/min) 30–65 30–60 30–50 30–50 Output (kg/h) 80–180 100–300 180–540 500–750 1. Working Principle Extrusion molding is a manufacturing process in which plasticizable rubber compound is continuously forced through a die under specific conditions, forming a product with a defined cross-sectional shape. As the rubber compound moves forward along the screw, mechanical and thermal effects cause changes in its viscosity and plasticity, transforming it into a viscous fluid. Based on these changes during extrusion, the working section of the screw is generally divided into three main parts according to their functions: the feeding section, the compression section, and the extrusion section. 2. Cold Feed Extrusion Advantages: It eliminates the need for heat‑treating equipment, facilitates mechanization and automation, and—thanks to the enhanced shearing and plasticizing action of the screw—produces rubber compounds with uniform temperature and consistent plasticity. This improves the quality of extruded products, enhances surface smoothness, and ensures semi‑finished extrudates maintain stable, consistent dimensions. Additionally, cold feed extrusion exhibits low sensitivity to pressure fluctuations, offers broad applicability and flexibility, and requires lower investment and operating costs compared to other extrusion methods. 3. Equipment Features This machine is suitable for extruding various types of rubber, including EPDM, natural rubber, nitrile rubber, butyl rubber, and reclaimed rubber. It is used to manufacture composite sealing strips for building doors and windows, single‑extruded sealing strips for automobiles, as well as dense or foamed rubber products in diverse shapes such as tapes, strips, tubes, and sheets—for applications in construction, electrical appliances, machinery, water conservancy, and more. Cold-feed rubber sealing strip extruder: This equipment uses cold rubber as raw material, typically employing forced cold feeding. Its key features include high production efficiency and stable output. Extruders are commonly used to produce sealing strips, rubber hoses, and other products manufactured via extrusion processes. They are specialized rubber-processing machines designed for producing tread compounds, inner tubes, rubber hoses, and various rubber profiles.

Key words:

Classification:

Rubber, rubber and plastic extrusion line

Business Hotline:

400-0319-386

Related products

Feedback

75 Rubber sealing strip production line

Model	XJ-75	XJ-90	XJ-120	XJ-150
Screw diameter (mm)	75	90	120	150
Draw ratio	20:1	20:1	20:1	20:1
Motor power(kw)	30	55	110	132
Screw speed (r/min)	30-65	30-60	30-50	30-50
Output(kg/h)	80-180	100-300	180-540	500-750

1. Working principle

Extrusion molding is a process in which the plastic material is continuously pressed out through a mouth shape under specific conditions, so that it becomes a product with a cross-section shape.

When the rubber material moves forward along the screw, due to the result of mechanical action and thermal action, the viscosity and plasticity of the rubber material have changed and become a viscous fluid. According to the change of rubber in the extrusion process, the working part of the screw is generally divided into feeding section, compression section and extrusion section according to its different functions.

2. Cold feeding extrusion

Advantages: saves heat in refining equipment, easy to achieve mechanization and automation, and because the main engine enhances the shear and plasticization of the screw, the rubber material attains uniform temperature and plasticity; improves the quality of extruded products, increases surface finish, and produces extruded semi-finished products with more stable and consistent dimensions; exhibits low sensitivity to cold-feed pressure. Wide applicability and flexibility; lower investment and production costs for cold-feed extruders.

3. Equipment characteristics

Suitable for extruded rubber (EPDM, natural, butyl green, butyl, regeneration), used for building doors and Windows sealing strip, automotive sealing strip composite strip, single extrusion strip production and construction, electrical appliances, machinery, water conservancy and other different shapes of strip, strip, tube, plate and other dense and foamed rubber products.

Cold feeding rubber seal extruder: It is a kind of equipment that uses cold rubber to produce. The feeding way of the equipment is generally strong refrigeration feeding. The cold - fed rubber extruder is characterized by high production efficiency and stable production. Generally, extruder is used to produce seals, rubber tubes and other products that can be produced by extrusion process. Extruder is used for extruding tread, inner tube, rubber hose and rubber type strip rubber machinery.