Cigarette Soft Packet Sealing Stamp Design
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Solution Overview
Problem
Current soft packets of cigarettes require a large amount of packing material for the sealing stamp, leading to high production and disposal costs due to the stamp's significant size and the need for extensive material usage.
Innovation Solution
A soft packet of cigarettes design where the sealing stamp is smaller and only superimposed on the inner package's top wall, using minimal glue to attach it, with additional glue between the inner and outer packages to prevent axial sliding and stabilize the inner package, allowing for standard machine production with minor adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a large closing stamp is used to seal the soft packet, then the package integrity and stability are improved, but the packing material usage and production costs increase
Solution Approach 1:
The closing stamp is divided into two functional parts: a large adhesive area that contacts the outer package for stability, and a smaller printed area containing only the necessary tax information and branding. This segmentation allows the stamp to maintain package integrity while reducing material usage by eliminating unnecessary blank spaces around the printed content.
Solution Approach 2:
The closing stamp concentrates its functional properties in specific local areas: the adhesive is applied only where needed for bonding to the outer package, and the printed information is placed only in the necessary regions. This local quality approach ensures that material is used efficiently only where it serves a functional purpose, reducing overall material consumption while maintaining package security.
2Reliability
If a large closing stamp is used, then the sealing function is improved, but the production costs and disposal costs increase
Solution Approach 1:
The closing stamp is segmented into adhesive and printed portions, allowing the adhesive to cover a larger area for effective sealing while the printed content occupies minimal space. This reduces the total material required for each stamp, directly lowering production costs and material waste.
Solution Approach 2:
The design changes the distribution of material properties within the closing stamp, concentrating adhesive in strategic locations rather than uniformly across the entire stamp area. This parameter optimization maintains sealing effectiveness while reducing the total quantity of adhesive and other materials needed per stamp.
3Quantity of substance
If the closing stamp is made smaller, then material usage is reduced, but the ability to stabilize and retain the inner package may be compromised
Solution Approach 1:
The closing stamp is segmented so that the adhesive portion extends beyond the printed information area, creating a larger bonding surface that contacts the outer package. This segmented design ensures that even though the overall stamp size is reduced, the adhesive area remains sufficient to stabilize and retain the inner package securely.
Solution Approach 2:
The adhesive is applied with local quality concentration at the boundaries and corners of the closing stamp, where it provides maximum bonding effectiveness. This localized adhesive application ensures strong retention of the inner package while minimizing the total adhesive material required.
Data Source
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AI summary
A soft packet (1) of cigarettes having: a group (4) of cigarettes; an inner package (3) enclosing the group (4) of cigarettes and has a top wall (5); an outer package (2), surrounding the inner package (3) on five sides leaving the top wall (5) of the inner package (3) exposed; and a sealing stamp (19) superimposed on the top wall (5) of the inner package (3), is only and entirely superimposed on the top wall (5) of the inner package (3), touches no part of the outer package (2), and is glued to the top wall (5) of the inner package (3) by way of glue (20).