What Does An Air Shaft Do in The Packaging And Film Industry?

An air expanded shaft, also known as an pneumatic expanable roller, is a shaft that uses high-pressure gas as the driving force. It works by adjusting the protrusions on the shaft surface by inflating and deflating, thus achieving precise control of the expansion and contraction tension of the shaft. This shaft is particularly suitable for special winding and unwinding equipment, simplifying the loading and unloading process, saving time and increasing efficiency.

Inflatable shafts are widely used in the packaging and film industry due to their unique advantages as follows:
1) Rapid inflation and deflation: The design of the inflatable shaft allows the separation and combination with the paper core to be completed in only 3 seconds, and it can be tightly engaged with the paper core without disassembling any parts on the end side of the shaft.
2) Easy installation and placement: With simple inflation and deflation actions, you can easily move and fix any position of the paper core on the shaft surface.
3) Wide ring width and smooth rotation: Its wide ring width design ensures the smoothness of rotation and low friction, thus simplifying the process of loading and unloading.
4) Strong bearing capacity: The size of the shaft diameter can be customized according to customer needs, and it is made of high-stress steel, which significantly improves the bearing load capacity.
5) High-precision use: The shaft body is made of alloy steel, with strong anti-deformation ability and small circumferential runout, which ensures the high qualification rate of the product.
6) Efficient economy: The shaft has a unique design, which is suitable for paper tubes with different thicknesses and widths, which improves the economic efficiency.
7) Easy maintenance and long life: As a single part, the internal structure parts of the inflatable shaft have fixed specifications and are interchangeable, which reduces the maintenance cost and prolongs the service life.

Because the classification of inflatable shafts includes plate inflatable shafts, key inflatable shafts, multi-balloon inflatable shafts, etc., and the inflatable shafts can be customized, the inflatable shafts are generally applicable in the field of production and manufacturing:
1) Plate inflatable shaft, also known as slat inflatable shaft, six-piece inflatable shaft, tile inflatable shaft and other expansion parts are plates, the fulcrum is evenly dispersed, the force is uniform, usually the expansion height can reach 4mm to 5mm, can be applied to the machinery with high winding precision or lighter winding items.
2) The key inflatable shaft expands a single key bar, and the fulcrum spreads to each key bar to balance the force, and the unilateral expansion height can reach 5mm to 6mm after inflation, which can be applied to items with heavy mechanical winding capacity.
3) Multi-bladder inflatable shaft (through-key inflatable shaft) The airbags and key strips are evenly arranged on the periphery, and the whole shaft has good balance, which is suitable for machines with high linear speed; Multiple groups of airbags are evenly arranged on the shaft body, and the air intake valve is shared to ensure the concentric beat; The length of multiple sets of airbag glue key strips is uninterrupted from the shaft head to the end of the shaft, which is convenient to insert multi-roll material to any position of the shaft; All the expansion parts are on the surface of the shaft body, easy to repair and replace, just simply loosen the beads at both ends, and take out the key strips to easily replace the airbags, with high efficiency.

air shafts are mainly used in the following machinery and equipment:
The inflatable shaft is mainly suitable for printing equipment: drying machine, flexo printing machine, gravure machine, trademark printing machine, etc.; Other machinery includes: coating machine, leather machine, setting machine, embossing machine, slitting machine, die-cutting machine, rewinding machine, paper tube machine, bag making machine, laminating machine, laminating machine, film blowing machine, foaming machine, laminating machine, embossing machine, paper machine, non-woven machine, cloth inspection machine, hot stamping machine, battery equipment and other related machinery supporting the use.

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(Over 20 years experience in air shafts,roller production )