Use and method of plastic film blowing machine

Film blowing machine is to heat the plastic particles to melt and then blow the film. There are many kinds of film blowing machine, PE, POF and so on. With the new particles blowing is new material, color is equal, clean, bags stretch well. Some people also use recycled plastic bags to make particles, the particles are generally called old material, when made particles are usually gray, when made into the bag usually to add pigment, made into the bag color is not uniform, crisp and easy to break, the price is also low. Although it is a recycled plastic bag, it is usually a waste bag in the process of making a bag.

Dalian plastic film blowing machine production is suitable for all kinds of high-grade film packaging. This film because of its good barrier, fresh, anti - wet, anti - frost, oxygen, oil resistance, can be widely used in light packaging. If all sorts of fresh fruit, meat food, pickles, fresh milk, liquid beverage, medical supplies. But it is not made from waste plastic raw materials, raw material for plastic particles is correct use film blowing machine production process and production principle of polyethylene particles in the hopper will be dry, depend on the weight of the particles themselves from the hopper into the screw, when the aggregate after contact with thread oblique edge rotating slant edge face plastic produce and inclined faces the vertical edges of thrust, plastic particles move goes on, goes on in the process, because the plastic and screw, plastic and barrel friction between the friction and collision between particles, but also gradually melt due to external heating cylinder.

The molten plastic is filtered by the machine head to remove impurities from the die head and the die mouth. It is cooled by the air ring, blown and expanded by the herringbone board, the traction roller, and the finished film is rolled into a cylinder. At present, the popular packaging in the market is mainly plastic, paper, plastic film blowing machine based blow molding industry in the market proportion is larger, but with the requirements of the paper industry is more and more strict, the new index of environmental protection and energy saving has raised the threshold of the paper industry, resulting in paper packaging market cost expansion, price rise. This makes the share of plastic packaging in the market increase accordingly, stimulating the development of film blowing machinery industry, at the same time, environmental protection and energy saving technology in the film blowing machine machinery industry is valued, promoting the film blowing machine to the high-end level.

Due to the different structure of the barrel screw of the film blowing machine and the different raw materials used, the temperature of the blowing die is also different. General set temperature is according to the barrel from low to high, and in the melting section after slightly lower temperature to the mold and then slightly raise the temperature of the curve set temperature is good. Used for blowing high and low pressure polyethylene, the products are widely used in composite film, packaging film, agricultural cover film, textiles, clothing bags or film packaging; The main motor adopts frequency conversion speed regulation, which increases the stability of speed regulation of the main motor and can save 30% of electricity. The screw material cylinder adopts 38 chromium-molybdenum-aluminum, after nitriding treatment, the traction frame adopts lifting type, and no matter the size of the film is blown large or small, it can achieve a good cooling effect.