Buffer structure, packaging set, and buffer structure forming method

A buffer structure, comprising:

• at least one internal main layer having an inner side and an outer side, wherein the inner side forms an accommodating space;
• at least one external main layer surrounding the outer side of the at least one internal main layer;
• and
• a rib portion located between two first folding lines, wherein the two first folding lines are parallel to each other, one of the two first folding lines is connected to the at least one internal main layer, the other one of the two first folding lines is connected to the at least one external main layer, and the rib portion is connected between the at least one internal main layer and the at least one external main layer and forms a ring shape;
• wherein the at least one external main layer comprises a plurality of second outer folding lines and a plurality of external surface portions that are sequentially separated by the plurality of second outer folding lines, each of the plurality of second outer folding lines is perpendicular to each of the two first folding lines, and the plurality of second outer folding lines are parallel to each other;
• wherein the at least one internal main layer comprises a plurality of hollow portions and a plurality of internal surface portions that are sequentially separated by the plurality of hollow portions, each of the plurality of hollow portions is in an elongated shape and perpendicular to each of the two first folding lines, the plurality of hollow portions are parallel to each other, a number of the plurality of internal surface portions is equal to a number of the plurality of external surface portions, and the plurality of internal surface portions correspond respectively to the plurality of external surface portions;
• wherein the rib portion forms a polygon shape.

A buffer structure, comprising:

• at least one internal main layer having an inner side and an outer side, wherein the inner side forms an accommodating space;
• at least one external main layer surrounding the outer side of the at least one internal main layer;
• and
• a rib portion located between two first folding lines, wherein the two first folding lines are parallel to each other, one of the two first folding lines is connected to the at least one internal main layer, the other one of the two first folding lines is connected to the at least one external main layer, and the rib portion is connected between the at least one internal main layer and the at least one external main layer and forms a ring shape;
• wherein a height of the at least one internal main layer is equal to a height of the at least one external main layer.