Cigarette Inner Pack Fin Seam Width Reduction
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Solution Overview
Problem
Cigarette packs with fin seams for sealing blocks increase the external dimensions of inner packaging, making them incompatible with standard folding boxes, and cause collisions when the lid is opened or closed.
Innovation Solution
Designing the inner pack with a cup-shaped tray and special cigarette arrangement, eliminating the collar in the folding box, and optimizing the fin seams to reduce the pack's width while maintaining strength and tightness, allowing the inner pack to rest directly on the box's side walls.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If fin seams are used for sealing the inner pack, then tightness and strength of the seam are improved, but the external dimensions of the inner packaging increase
Solution Approach 1:
The fin seams are folded over towards the front of the sealing pack, transforming the problem from a width dimension issue to a depth dimension issue. This allows the seams to be positioned in a different spatial dimension, reducing the transverse width while maintaining seam strength through the folded construction.
Solution Approach 2:
The inner pack is divided into functional zones: the sealing block with fin seams, the collar-free design, and the tray with recesses. This segmentation allows each component to be optimized independently - the fin seams provide strength while the tray recesses accommodate the folded seams without increasing overall pack width.
2Volume of stationary object
If the inner pack rests directly on the side walls of the outer pack, then space usage is optimized, but collisions occur during lid operation
Solution Approach 1:
The tray side flaps are designed to extend beyond the sealing block and form protective edges that cushion the fin seams during lid operation. This beforehand cushioning prevents collisions between the lid side walls and the fin seams, ensuring reliable operation while maintaining direct contact between the inner pack and outer pack side walls for space efficiency.
Solution Approach 2:
The tray side flaps act as intermediary elements between the sealing block and the outer pack side walls. These flaps provide a buffer zone that prevents direct collision between the fin seams and moving parts during lid operation, while still allowing the inner pack to rest directly on the outer pack structure.
3Shape
If the collar is eliminated from the folding box, then the inner pack fits better, but protection during lid operation is reduced
Solution Approach 1:
The collar is completely removed from the folding box design, extracting the protective function from the outer pack structure and relocating it to the tray side flaps. This allows the inner pack to fit better within the outer pack dimensions while the tray flaps provide the necessary protection during operation.
Solution Approach 2:
The tray side flaps serve as intermediary protective elements that replace the traditional collar function. These flaps extend beyond the sealing block to provide protection during lid operation, while allowing the inner pack to maintain direct contact with the outer pack side walls for optimal fit.
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The invention relates to a cigarette package having an outer package (10) designed as a flip-top box for holding an inner package (11) made of foil, in particular a sealed package, which has upright side seams (39, 40) arranged on inner side walls (36), in a flip-top box having no collar. The inner package (11) is designed having increased dimensional stability because of the arrangement of the side seams (39, 40), which are designed as fin seams, and because of a special structure of a tray, which is arranged inside the inner package (11).