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The pleated design on the sides adds more slack and expansion to the bags, allowing them to accommodate larger, bulkier products. In particular, when filled with small granular products, the side gusset bags will create a square block that helps the package to stand upright on its own. This means you can store and display more products in the same space, while the square blocks can be easily stacked.
box-shaped plastic bags
The principle of how the side gusset plastic bag works is that each side of the bag will have a fold inward before being pressed to the bottom. The width of this folded section will be half the depth of the overall bag in the unfolded condition. Take for example, an ordinary bag with a width of 30 and a length of 50 cm. After each side is folded in by 5 cm, the width of the bag is reduced to only 20 cm, but in return there will be an additional 10 cm of depth.
The depth created requires the bag to have a matching bottom. The area of this bottom will be made up of the length of the original bag. In the example above, the length of the bag will be reduced by 5cm on each side to make the bottom part. Specifically, a 30 x 50 cm plastic bag with each side folded 5 cm will create a box bag with dimensions of 20 x 45 x 10 cm, corresponding to the width, height and depth respectively.
Regular gusset bags can be made from any type of flexible plastic, as long as the plastic can be produced in rolls of film. Each material has its own characteristics, which form the basis of determining suitability for the final purpose of packaging.
