During operation, the mold head of the film blowing machine can heat and melt plastic particles, and then make them into a thin film. Due to the wide variety of plastic varieties and the wide range of plastic film applications, second-hand film blowing machines have many different types. For relevant practitioners, it is necessary to choose the appropriate type of machine according to their own application needs.

The application scope of the film blowing machine is mainly determined by its different materials. For example, the film produced by the PP film blowing machine is suitable for various supermarket shopping bags, mushroom bags, and other bags with high hardness and low requirements for stretchability and brightness. The film blown by high-pressure PE is suitable for various fresh-keeping bags, and the recycled film is suitable for making various garbage bags, etc. The film blowing machine is widely used in various industries.

What are the cooling methods for Dalian plastic blow molding machines

The cooling of the film blowing machine is divided into air cooling, water cooling, oil cooling, and natural cooling.

1. Air cooling is mainly aimed at electric motors and machine barrels; It is advisable to control the temperature of the electric motor within 80 degrees, while the temperature of the barrel may vary depending on the production process of the product;

2. Water cooling is mainly aimed at the feeding seat (material mouth section, usually made of cast iron), and the water temperature of the fully automatic fresh-keeping bag making machine is room temperature; Circulating water cooling is also required in the oil coolers of large equipment.

3. Oil cooling is generally aimed at gearboxes, especially large gearboxes,

4. Natural cooling is generally applicable to components with low temperature requirements and will not be repeated.

The characteristic of the plastic film blowing machine's aluminum casting electric heating coil is that it uses a tubular electric heating element as the heating element, which is bent and shaped, and then poured into a mold to produce various products. It has the characteristics of tight fitting with the heated body, uniform heating, good thermal conductivity, and long service life. This product is currently one of the ideal heaters both domestically and internationally. Insulation layers can be added outside the heater according to user needs, resulting in higher thermal efficiency and a savings of about 20% in electricity consumption.

The height of the film blowing machine is designed based on the width of the film. If a 1-meter film blowing machine is not equipped with a rotating mold, the height should be around 4 meters. If a rotating grinding tool is added, the height should be increased by an additional 0.4-0.5 meters. If it is blown HDPE, it is allowed to calculate based on 9.5% of the above height.