Pressurized Cigarette Package with Inert Gas Seal
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Solution Overview
Problem
Conventional cigarette packages fail to maintain freshness and moisture content under extended shelf life or adverse storage conditions, leading to staleness and flavor loss due to inadequate barrier properties against oxygen and moisture.
Innovation Solution
A pressurized cigarette package with a fluid-tight seal using a double-layered overwrap system, where a pressurizing agent such as an inert gas is introduced to create a higher pressure environment within the package, maintaining freshness and moisture by minimizing gas exchange through a heat-seal adhesive and transparent or metalized films.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional cigarette packages use standard polymeric overwrap films, then the package structure is simple and manufacturing is easy, but the barrier properties against oxygen and moisture are insufficient leading to freshness loss
Solution Approach 1:
The patent applies composite materials by using a multi-layer overwrap system consisting of an inner polymeric film layer and an outer metallized layer. This composite structure combines the flexibility and sealability of polymeric materials with the superior barrier properties of metalized layers, creating a package that effectively blocks oxygen and moisture while maintaining structural integrity and ease of manufacture.
2Duration of action of stationary object
If the package uses extended shelf life protection, then freshness is maintained longer, but the package must withstand higher pressures and more rigorous testing
Solution Approach 1:
The patent applies beforehand cushioning by introducing inert gas pressurization into the package before sealing. This pressurized inert atmosphere serves multiple functions: it acts as a cushion against external pressure changes during shipping and storage, prevents package collapse, and creates a protective environment that extends shelf life by preventing oxidation and moisture ingress from the outset.
3Reliability
If inert gas pressurization is used to extend shelf life, then oxygen and moisture barrier is improved, but the package requires fluid-tight sealing and pressurization equipment
Solution Approach 1:
The patent applies inert atmosphere by filling the package with pressurized inert gas (such as nitrogen or carbon dioxide) before sealing. This inert gas environment displaces oxygen and creates a protective atmosphere that prevents oxidation of tobacco products. The pressurization also enhances the barrier effect by reducing the partial pressure gradient for moisture and gas exchange through the package walls, extending shelf life without requiring complex active preservation systems.
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
The pressurized package effectively extends the shelf life of cigarettes by maintaining freshness and moisture, while maintaining compatibility with existing manufacturing equipment and appearance, ensuring the cigarettes remain fresh and flavorful.
Implementation Method 1
A pressurized package may include a pressurizing agent such as an inert gas that was introduced into the package in the form of a liquid or a solid and allowed to evaporate or sublimate into gaseous form
Implementation Method 2
A pressurized package may include a pressurizing agent such as an inert gas that was introduced into the package in the form of a liquid or a solid and allowed to evaporate or sublimate into gaseous form
Implementation Method 3
maintaining compatibility with existing manufacturing equipment and appearance, ensuring the cigarettes remain fresh and flavorful
Data Source
AI summary
A cigarette or other tobacco product package may be constructed with a sealed outer overwrap. The overwrap may be multi-layered and configured to contain an internal pressure higher than an ambient external air pressure. The multilayer overwrap may be assembled to a cigarette or other tobacco product pack in two or more layers adhered together during assembly.