How to adjust the film thickness of PE blown film machine?

PE blown film machine has a wide range of application prospects in the packaging industry and other fields. The advantages of PE blown film machine are high production efficiency, simple operation, and low cost. Meanwhile, due to the excellent tear resistance, tear resistance, and chemical corrosion resistance of polyethylene materials, the produced films have good physical properties and can meet the needs of different industries.

When using a PE blown film machine, some issues should also be noted, such as the need for operators to have certain technical experience, regular maintenance of the equipment, and avoiding production efficiency being affected by equipment failures. Meanwhile, with the increasing awareness of environmental protection, choosing a PE blown film machine that meets environmental standards has become crucial.

How to adjust the film thickness of PE blown film machine?

Adjust extrusion rate: Extrusion rate refers to the flow rate of plastic particles under screw extrusion, which determines the thickness of the film. By adjusting the extruder speed and barrel temperature on the PE blown film machine, the extrusion amount can be controlled. Generally speaking, the larger the extrusion amount, the thinner the film thickness; The smaller the extrusion amount, the thicker the film thickness.

Adjust cooling rate: Cooling rate refers to the cooling rate of the film when passing through a cooling roller or water bath. By adjusting the speed of the rollers or the water temperature, the cooling rate of the film can be changed, thereby affecting the thickness of the film. Generally speaking, the faster the cooling rate, the thinner the film thickness; The slower the cooling rate, the thicker the film thickness.

Specification board adjustment: PE blown film machines are usually equipped with a set of specification boards, and the thickness of the extruded film is controlled by adjusting the spacing between the specification boards. The smaller the spacing between specification plates, the thinner the extruded film; The larger the spacing between specification plates, the thicker the extruded film.

Pressure control: During the production process, it is possible to determine whether the thickness of the film meets the requirements by observing the pressure changes of the extruder, and adjust the extrusion amount and cooling speed in a timely manner to maintain a stable film thickness.

PE blown film machine is a specialized equipment used for producing polyethylene film. It usually consists of an extruder, die head, film cooling system, stretching system, coiling system, and other components. PE blown film machine can produce polyethylene films of different thicknesses and widths, which are widely used in packaging, agriculture, construction and other fields.

The working principle of a PE blown film machine is to heat and melt PE particles, then blow film them into shape through an extrusion port, and finally obtain a certain thickness of polyethylene film through cooling, leveling and other processes. Due to the uniform texture, high transparency, good mechanical strength, and flexibility of the films produced by PE blown film machines, they are widely used in the packaging industry.