The extrusion molding process has many advantages. This process can achieve efficient production, and an extruder can continuously produce a large amount of products, improving production efficiency. Secondly, extrusion molding technology is suitable for manufacturing products of various shapes and sizes, and can meet the needs of different customers. In addition, the cost of extrusion molding process is relatively low, and equipment investment and production costs are relatively low.

Extrusion molding has been widely used in fields such as construction, transportation, and medical equipment. In the field of construction, extruded products such as plastic pipes, door and window frames, etc. are widely used; In the field of transportation, extruded products such as automotive parts and ship parts are also very common; In the field of medical devices, extruded products such as medical pipes and syringes have also been widely used.

What are the key technologies for the Dalian extrusion molding process of soft PVC?

1、 Raw material selection and processing: The main process of soft PVC extrusion molding is to choose suitable raw materials, usually PVC particles. When selecting raw materials, it is necessary to consider their composition and quality, and choose suitable materials based on product characteristics. Meanwhile, before extrusion molding, it is necessary to dry the raw materials to ensure their quality and processing efficiency.

2、 Mold design and debugging: Mold is the key of soft PVC extrusion molding, and mold design and debugging have a direct impact on product quality and production efficiency. The design of molds needs to consider factors such as product size, shape, and structure to ensure that the product can meet the design requirements. In the production process, it is necessary to debug and optimize the mold according to the actual situation to improve the consistency and stability of the product.

3、 Extruder operation and control: The extruder is the core equipment for soft PVC extrusion molding, and operating and controlling the parameters of the extruder is crucial for product quality and production efficiency. Operators need to be familiar with the working principle and operating points of the extruder, and set the temperature, pressure, speed and other parameters of the extruder reasonably to ensure the stability and smoothness of the extrusion process.

4、 Cooling and shaping: During the extrusion molding process of soft PVC, cooling and shaping are crucial steps that directly affect the quality and appearance of the product. It is necessary to design a reasonable cooling system to ensure that the product can be quickly cooled and shaped, and to avoid product deformation or poor surface quality.

The principle of extrusion molding is to use a device called an extruder to heat the raw materials through a screw and extrude them into shape. An extruder usually consists of a hopper, a feeding mechanism, a screw, and a mold. The raw materials are first heated to a certain temperature, and then added to the extruder through a hopper. The screw rotates to push the raw materials forward, causing them to be extruded through the mold hole and finally formed. Different shapes and sizes of mold holes can produce products with different shapes.

Extrusion molding has high production efficiency because it can produce multiple products simultaneously and has a fast production speed, which can meet the needs of large-scale production. Meanwhile, the cost of extrusion molding is relatively low due to the high utilization of raw materials, low waste, and relatively low investment in production equipment during the production process. Therefore, extrusion molding has been widely used in various industrial production.