Cigarette Pack Transverse Bands Embossing Rigidity
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Solution Overview
Problem
Conventional cigarette packs made from thinner board materials are prone to bowing and feel flimsy, limiting shape options and increasing material costs due to the need for additional structural elements like ribbing on inner frames.
Innovation Solution
Incorporating transverse bands of greater thickness than the regions between them on the exterior periphery of the pack, including the lid, which can be formed through embossing, to provide rigidity and strength without increasing material usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If thinner board material is used to reduce cost, then material cost decreases, but the pack becomes flimsy and bows undesirably
Solution Approach 1:
The patent applies local quality by creating transverse bands of increased thickness at specific locations on the pack panels. These bands are formed by embossing the board material to create localized thickened regions that provide structural reinforcement exactly where needed for rigidity, while the rest of the panel can remain thin to reduce overall material usage and cost.
Solution Approach 2:
The patent changes the physical parameter of board thickness locally through the embossing process. The embossing creates regions with varying thickness parameters - thicker at the band locations and thinner elsewhere - allowing the pack to achieve the desired rigidity with thinner overall material by concentrating thickness where structurally necessary.
2Quantity of substance
If thinner board is used, then material cost decreases, but pack shape options are limited due to weakness in wide packs
Solution Approach 1:
By applying local quality through transverse bands, the patent enables wide pack designs that would otherwise be too weak. The bands provide localized reinforcement that allows the pack to maintain structural integrity across wider dimensions, thereby expanding shape options without requiring uniformly thicker board material throughout.
Solution Approach 2:
The patent introduces a dimensional variation in the thickness parameter by creating raised transverse bands. This adds a third dimension (height/thickness variation) to the otherwise two-dimensional panel, allowing wide packs to achieve the necessary structural support through vertical dimensioning rather than increasing overall board thickness.
3Strength
If ribbing is added to the inner frame to prevent bowing, then pack rigidity improves, but space within the container is used up and material cost increases
Solution Approach 1:
The patent extracts the reinforcement function from the inner frame structure and relocates it to the exterior panels. Instead of adding ribbing inside the container that would reduce internal volume, the embossed transverse bands provide the necessary rigidity on the exterior surface, leaving the internal container volume fully available while still preventing bowing.
Solution Approach 2:
The patent creates a structural reinforcement system on the exterior panels that copies the function of internal ribbing without requiring internal space. The embossed transverse bands on the exterior provide the same bow-prevention function that internal ribbing would provide, but without consuming any container volume.
4Strength
If ribbing is added to the inner frame to prevent bowing, then pack rigidity improves, but material cost increases
Solution Approach 1:
The patent merges the reinforcement function with the existing panel structure by embossing transverse bands directly onto the panels. This combines the structural support function with the panel material itself, eliminating the need for separate ribbing components and the additional material cost that would result from adding internal reinforcement elements.
Solution Approach 2:
The patent enables the panel material to serve its own reinforcement function through the embossed transverse bands. The bands are formed from the panel material itself rather than requiring additional reinforcement materials, allowing the panel to provide its own structural support and reducing overall material costs.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution allows for the use of thinner board materials while maintaining pack rigidity, reducing material and transport costs, and enabling wider pack designs with improved user handling and tactile grip, while being less susceptible to board grain direction.
Implementation Method 1
the bands may be embossed either during manufacture of the blank or as a pre-production step in the process of packing smoking articles into the pack
Data Source
AI summary
A pack for smoking articles such as cigarettes having front and rear panels connected by opposite side panels, a bottom panel and a lid. At least one of the panels in the pack includes a plurality of transverse rigidifying bands. These bands are greater in thickness than a region between the bands. The bands may be formed by an embossing method.