Cigarette Pack Inner Flap Embossing for Gap-Free Sealing
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Solution Overview
Problem
Cigarette packs face challenges in protecting contents from environmental influences while maintaining aroma preservation, adhering to legal regulations, and ensuring cost-effective producibility, with existing designs often having optical quality issues and complex manufacturing processes.
Innovation Solution
A cigarette pack design featuring special front corner flaps on the inner pack's front wall, oblique side edges on outer side flaps, and embossed deformation to create a tight seal and visual envelope fold impression, along with a hinge-lid outer pack and a multiple-use closure label to address these issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional cigarette packs with foil wrapping and thermal sealing are used, then protection from environmental influences and aroma preservation are improved, but manufacturing complexity increases and legal compliance becomes problematic
Solution Approach 1:
The patent removes the foil wrapping and thermal sealing components from the packaging system, replacing them with a cardboard-based sealing mechanism. The inner pack uses overlapping side flaps made of cardboard that are secured without adhesive or thermal sealing, extracting the problematic foil and adhesive materials while maintaining protective functionality.
Solution Approach 2:
The patent employs a simple, disposable cardboard inner pack that is designed for single use. The inner pack with its overlapping flaps and embossed connections is meant to be discarded after opening, eliminating the need for complex reusable sealing mechanisms and reducing manufacturing complexity while maintaining adequate protection.
2Ease of manufacture
If conventional cigarette packs with overlapping side flaps are used, then manufacturing simplicity is improved, but optical quality deteriorates due to protruding edges and gaps
Solution Approach 1:
The patent applies embossing to the side flaps of the inner pack during the manufacturing process, creating pre-formed connection areas that will later provide tight seals. This preliminary shaping action ensures that when the flaps are folded and connected, they form smooth, gap-free edges without requiring additional post-processing or complex assembly techniques.
Solution Approach 2:
The patent changes the physical parameters of the cardboard material by applying embossing, which deforms the material to create raised connection areas. This parameter change in the material structure allows the flaps to connect tightly without gaps or protruding edges, improving optical quality while maintaining the simple overlapping flap design.
3Ease of manufacture
If simple cardboard blanks are used without embossing, then manufacturing cost is reduced, but sealing quality and visual appearance deteriorate due to gaps between flaps
Solution Approach 1:
The embossing process is applied to the cardboard blanks during manufacturing, creating pre-formed connection areas that ensure tight seals. This preliminary action of deforming the material structure beforehand allows for high sealing quality without requiring complex assembly processes or additional materials, maintaining cost-effectiveness while improving precision.
Solution Approach 2:
By applying embossing to the cardboard material, the patent changes the physical parameters of the blank, creating raised areas that will form tight connections. This parameter change in the material structure enables high sealing quality and visual appearance while still using simple cardboard material, resolving the contradiction between manufacturing cost and sealing precision.
Data Source
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AI summary
The invention relates to a cigarette pack, comprising an inner pack (12) for pack contents, in particular for a group of cigarettes (11), and comprising an outer pack (13), preferably in the form of a hinge/lid pack. The inner pack (12) which is made of (thin) cardboard and which preferably directly encases the pack contents has lateral walls (50) which are formed by overlapping lateral flaps (51, 52, 53) of a blank (33) for the inner pack (12). The invention is characterized in that end corner flaps (55) which are arranged on both sides of a cover wall (37) of the inner pack (12) have a respective substantially V-shaped design, and each of the end corner flaps (55) is arranged between an inner lateral flap (51) and an outer lateral flap (52, 53) of the lateral walls (50) of the inner pack (12).