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As competition intensifies in the plastic industry, film blowing machines are evolving towards higher speeds and wider widths. There is also a growing demand for larger film roll diameters and higher film roll quality. With advancements in air pressure technology, high-speed automatic film blowing machines can now fold film widths up to 2.1m, reach speeds of 80m/min or more, achieve film diameters of up to 1m, and produce outputs of up to 400kg/h, all while maintaining exceptional film roll quality. However, the traditional coil changing mechanism used during this process is not only labor-intensive and cumbersome but also prone to waste, especially when cutting into multiple films (more than three films on one side) or frequently changing small membranes.
High manual labor intensity during coil changing: When the winding is full and the alarm sounds, one person has to manually move the inflatable shaft on the turntable to the waiting area, while two people move the full coil to the bending area. The film is then manually cut off. This entire process requires three people.
When cutting into multiple films (more than three films on one side) or changing small film rolls, more people are needed, and unskilled or improper operation can easily lead to waste.
When inspecting the film blowing machine, certain precautions should be taken: Firstly, the equipment's temperature control device should be checked. This device must operate under reasonable temperature conditions; any issues could cause significant problems. Therefore, before starting the film blowing machine, the temperature settings of all devices should be checked and adjusted if necessary to ensure the equipment operates under the right conditions. Additionally, the equipment's traction speed, which directly affects the film's thickness, should also be checked. Different speeds are needed when processing films of different thicknesses, so this must be adjusted accordingly.
