The development trend of blow molding machine
A granulator is a molding machine that can manufacture materials into specific shapes. Widely used in environmental protection, printing and dyeing, ceramics, rubber, plastic chemicals, petrochemical, pharmaceutical, food, building materials, mining and other fields. There are a wide variety of granulators, which can be divided into rotary belt condensing granulators, twin screw extruders, rotary drum drying and slicing machines, pair roller dry granulators, pair tooth granulators, vacuum granulators, etc. according to their structure and working principles. Today, we mainly talk about vacuum granulator.
The so-called vacuum granulator refers to the addition of vacuum preparation to ordinary granulators, which greatly improves the quality and molding of products due to the addition of vacuum devices. Although there are differences in price between vacuum granulators and ordinary granulators, people tend to prefer vacuum granulators. There are reasons why people prefer vacuum granulators. Let's take metal vacuum granulators and plastic vacuum granulators as examples to discuss their advantages and charm.
The great difference between ordinary metal granulators and vacuum metal granulators lies in the oxidation of materials. The entire process of smelting and casting with ordinary granulators is conducted in the air. Due to contact with oxygen, the cast particles generally have a little oxidation and pores, so the produced particles are not uniform, with flat spherical surfaces, pores, and low gloss. They are suitable for Jintong metal recycling processing, which is not of such high quality. The vacuum granulator is used to smelt and cast metal under the protection of vacuum inert gas, which can avoid oxidation caused by metal contact with oxygen. It has almost no pores and higher glossiness. Vacuum granulators are generally used to produce high-quality and uniformly colored precious metal particles and alloy particles. They are melted under the protection of inert gas. The cast particles have no oxidation or pores, and are uniform, relatively smooth, stable in color, and high in gloss. Suitable for jewelry processing and handicraft production with high requirements.
For our familiar field of plastic vacuum granulators. The main purpose of vacuum pumping in the production process is to exhaust gas. If the plastic you produce originally has a high moisture content, such as nylon 6, nylon 66, etc., you need to vacuum it, otherwise it will cause serious material leakage and it is difficult to prevent it. Similarly, if you produce some temperature sensitive raw materials that are easy to decompose into gases, they are easy to emit and require vacuum pumping. The surface of the spline made without vacuum is not smooth and there are pores inside, which will result in points being deducted for its appearance and texture. It naturally affects the sales volume and revenue of producers.