That is, one side of the packaging bag is directly folded in half with composite film, and the other three sides are heat-sealed. In fact, the three-side sealing bag can be regarded as a supplement to the four-side sealing bag. Compared with the four side sealing bag, its advantage is that the bag can be expanded into a three-dimensional bag type, high space utilization rate, suitable for large volume packaging needs, often used for cold granule packaging and other products.

The most common packaging form of three-side bag sealing machine is single-column packaging (this is also the reason why three-side sealing is suitable for large volume packaging).

Ruian Zhoutai packaging Machinery Co., Ltd. specializes in the production of three side sealing bag making machine, more related products please pay attention to the official website www.raztjx.com