作者: Hans Stahlecker
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摘要: A container formed from a single cut of material, with bottom the having rectangular or square surface area and being bordered by prepared folding lines around which strips are folded open that connect to form shell surfaces container. In each case two additional provided between extend at right angles other extending toward enclosing an angle less than 90° deviating direction border portion so areas located outside extension over may be placed against strip was over. The enclosed circular flanged roll is edges strip. Corners material recessed notched in such way intended for flange junction points only overlap along short length circumferential roll. height configuration shape recesses notches corners selected transistion has not cutting edges, three layers.