Two-seam flat bags (flat bags, bags) are made from rolls. Sufficient paper is cut off both sides of the paper web to leave an adhesive fold approx. 12 mm wide. The technique of the cut creates a somewhat rough edge of the paper. The glue fold is bent inwards and provided with glue. When the bag blank is then folded on the bottom, a bag is created with two parallel, internal adhesive seams. The cut with which the bag is separated from the web and which defines the upper edge of the bag is smooth or slightly jagged, depending on the type of machine. The flap is usually rectangular. In a slightly more expensive variant (only available as a custom-made product), the edge is cut smooth and the flap is rounded.
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