| 摘要 |
Packing containers are manufactured by folding, vacuum formation, moulding or other methods giving a form to plastically deforming flexible materials. Containers have a tube case with two or more longitudinal brinks (14) that with pairs confine the plain surface of a container wall (11). In order to avoid container deformation and/or cracking when usually grasping it by the hand the afore mentioned walls (11) or at least one of the side walls (11) have reinforcing and stiffening elements formed by the plastically deforming wall material in the area of the relevant confining brinks (14). It considerably reinforces the container which may be grasped but not deforming the brinks and/or side walls (11, 12). |
