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the openings could be set in the middle of the packing bags of potato chips，on the face side. So the bags could be placed horizontally after unpacking.The size of the openings are big enough for two or even three hands fetching the chips simultaneously. thanks to the point-segment technique used at the openings.Thirdly, in order to strengthen tightness of the packing bags,A layer of transparent plastic film is adhered to the opening, and the size of the transparent plastic film can cover the whole opening.Not only does it keep the opening tight, but also protects the potato chips from moisture after unpacking.
Xiamen Academy of Arts And Design Fuzhou University