Cigarette Packet Reinforcing Element Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for packaging cigarettes fail to securely hold the cigarettes together, leading to mechanical stress and damage, especially at the filter end, due to an unstable reinforcing element that is too loose or weak, and does not effectively protect both ends of the packet.
Innovation Solution
A packet design featuring a reinforcing element made of thin cardboard with a specific configuration, including a bottom wall, front and rear walls, and side walls that are interrupted to create openings, providing stability and protection by snugly wrapping around the cigarettes, with adhesive joining points to reduce material usage and simplify production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a reinforcing element is applied to hold cigarettes together, then the cigarettes are secured in the group, but the reinforcing element becomes too loose and unstable
Solution Approach 1:
The reinforcing element is divided into multiple walls (front wall, rear wall, side walls, bottom wall) that can be independently positioned and joined. This segmentation allows each wall to be optimized for its specific function while maintaining overall stability and snug fit around the cigarette group.
Solution Approach 2:
The reinforcing element is pre-formed with specific dimensions and wall configurations before being applied to the cigarette group. The preliminary formation of walls and joining points ensures proper fit and stability are achieved from the start, eliminating the need for adjustments during the wrapping process.
2Reliability
If the reinforcing element is made robust and stable, then it effectively holds cigarettes together, but it requires more adhesive material
Solution Approach 1:
Adhesive is applied selectively at specific joining points where walls connect to each other, rather than using continuous adhesive strips. This local application method provides sufficient bonding strength while minimizing the total quantity of adhesive material required.
Solution Approach 2:
Multiple walls are joined together at strategic points to form a unified reinforcing structure. By combining the front wall, rear wall, side walls, and bottom wall through adhesive joining points, the element achieves robust stability without requiring excessive adhesive material.
3Ease of manufacture
If the reinforcing element is made from thin material, then it is easy to manufacture, but it lacks mechanical stability
Solution Approach 1:
The thin material is segmented into multiple wall components that can be independently formed and then joined together. This segmentation allows the use of thin, easy-to-manufacture material while the assembled structure achieves the necessary mechanical stability through the combination of multiple walls.
Solution Approach 2:
The reinforcing element functions as a composite structure made from multiple thin wall components joined together. While each individual wall can be made from thin material for ease of manufacture, the composite assembly provides the required mechanical stability and strength.
Data Source
Figure 1
Figure 2A
Figure 2AA
AI summary
A packet (1) of cigarettes (2) or other smokable articles, each having a first and a second end (201, 202), elongate in shape and extending along a longitudinal direction, comprises: a group (3) of cigarettes having a first zone (303), facing towards the first end of the cigarettes (2), and a second zone (304), longitudinally spaced from the first zone (303) and facing towards the second end of the cigarettes (2); a sealed wrapper (4) enclosing the group (3) of cigarettes, made from a film (401) of thermoplastic material and having an extraction opening though which the cigarettes (2) can be taken out; a sealing panel (402) applied to the opening of the sealed wrapper (4); a reinforcing element (5), made of thin cardboard, located inside the sealed wrapper (4) in contact with the group (3) of cigarettes to surround it at least partly, and having a front wall (501), a rear wall (502), two side walls (503) and a bottom wall (504) in contact with the first end (201) of the cigarettes (2). The reinforcing element (5), in the second zone (304) of the group (3) of cigarettes, annularly surrounds the group (3) of cigarettes and, in the first zone (303) of the group (3) of cigarettes, defines side openings (509).