The production technology of the plastic flexible packaging industry has become mature with years of innovation. As we all know, blown film is the first step in the production of plastic film. As a flexible packaging operator who has been in the business for more than ten years, LGLPAK LTD. has strictly controlled the film blowing process, and on this basis, combined with its own products to make optimization and adjustments. To achieve the purpose of product quality improvement.
Blown film is a plastic processing method, which refers to a plastic processing technology in which plastic particles are heated and melted and then blown into a film. The quality of the film material blown by this process depends on the film blowing machine and plastic particles. For example, the film blown out by our company with brand-new material has uniform color, clean, and good stretch of finished product. However, if plastic particles made of recycled waste plastics are made into films, pigments are usually added, and the finished films may be unevenly colored, brittle and fragile.
The film blowing process starts by adding dry polyethylene particles into the lower hopper, and enters the screw from the hopper by the weight of the particles. When the pellets contact the threaded bevel, the rotating bevel faces the plastic and is perpendicular to the bevel surface. The thrust force pushes the plastic particles forward. In the process of moving, due to the friction between the plastic and the screw, the plastic and the barrel, and the collision and friction between the particles, it also gradually melts due to the external heating of the barrel. The molten plastic is filtered by the machine head to remove impurities from the die orifice of the die. After cooling, inflation and traction, the finished film is finally rolled into a tube.
With the advancement of science and technology and the continuous improvement of people’s needs, the film blowing process continues to innovate, and the three-layer co-extrusion film blowing process has also been implemented. Our company’s new three-layer co-extrusion blown film production line adopts a new type of high-efficiency and low-energy extruder unit , It contains advanced technology such as photoelectric automatic correction device, automatic winding and film tension control, and computer screen automatic control system. Compared with similar equipment, it has the advantages of higher output, good product plasticization, low energy consumption, and simple operation. It completely solves the problems of film ruffles and rewinding size, and brings product quality to a new level.
If the innovation of blown film technology is driven by the giants of science and technology, then, the Oreo style blown film pioneered by our company on the basis of the three-layer co-extrusion process is to innovate on the shoulders of giants. We put the milky white material In the middle, the color masterbatch is placed on the outer sides, which not only maintains the characteristics of the three-layer co-extruded film, but also reduces the cost of the color masterbatch, and improves the aesthetics and coverage to a new height.
In front of the technological giants, we are the beneficiaries, we are very small, but we are not afraid to stand on the shoulders of giants to innovate, because we believe that small products can also make great achievements!
Post time: Aug-19-2021
