Cigarette Pack Closure Blank for Adhesive Contamination Barrier
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Solution Overview
Problem
Adhesives used in cigarette packaging can affect the contents, leading to potential contamination and quality issues.
Innovation Solution
A pack design with a blank attached to the closure means, which minimizes direct contact with the contents and acts as a barrier, using an adhesive layer with varying adhesion strengths and a separate actuation tab connected to the outer packaging, ensuring secure sealing without compromising the contents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If adhesive is applied directly to the inner packaging to seal the closure means, then secure bonding is achieved, but the adhesive may contaminate or compromise the package contents
Solution Approach 1:
The patent introduces a blank as an intermediary element between the adhesive and the package contents. The adhesive is applied to the blank rather than directly to the inner packaging, and the blank is positioned to overlap and seal the dispensing opening. This intermediary structure achieves secure bonding while preventing adhesive contamination of the cigarettes, as the blank acts as a physical barrier that separates the adhesive from the protected contents.
2Strength
If the closure means is fully bonded to the inner packaging, then secure sealing is achieved, but access to the dispensing opening becomes difficult
Solution Approach 1:
The patent segments the closure system into distinct functional zones: a strongly bonded peripheral region that ensures secure sealing, and a centrally located actuating tab with reduced adhesive coverage that facilitates easy opening. The blank is designed with an actuating tab portion that has less adhesive application, allowing consumers to easily peel back the closure means and access the dispensing opening while maintaining secure sealing around the edges.
3Area of stationary object
If the blank has the same dimensions as the closure means, then complete coverage is achieved, but the closure means cannot overlap the blank to bond completely around it
Solution Approach 1:
The patent applies local quality by making the blank smaller than the closure means, creating an intentional size difference that enables the closure means to overlap the blank on all sides. This overlapping arrangement allows complete peripheral bonding around the dispensing opening, achieving strong sealing security. The localized reduction in blank size at its periphery creates the necessary space for the closure means to extend beyond and bond completely around the blank's edges.
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
Prevents contamination by reducing direct adhesive contact and ensuring a secure, moisture-tight seal, maintaining the quality of the packaged cigarettes.
Implementation Method 1
a closing means, in particular a closing flap, which is attached to the inner pack by means of an at least partially releasable adhesive
Data Source
Figure 1~2
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Figure 8
AI summary
The invention relates to a pack for cigarettes (10) having an outer pack (26), preferably embodied as a hinge-lid pack with a packet part (27) and a lid (28) which is pivotably mounted on the packet part (27), and having an inner pack (12) with a blank (13) of a packaging material which preferably substantially surrounds at least one cigarette group as pack contents on all sides, wherein the inner pack (12) has a removal opening (19) to allow the consumer access to the pack contents, and wherein the inner pack (12) has a closure means, in particular a closure flap (20), which is fastened to the inner pack (12) by means of an at least partially releasable adhesive bond and can be pulled off from the inner pack (12) for access to the removal opening (19) or the pack contents. The invention is characterized in that the blank (13), for forming the removal opening (19), is provided with an opening which can be closed by the closure means, wherein the closure means has a covering region which, in the closed position of the closure means, surrounds the opening on all sides or peripherally and can be connected by adhesive bonding to a region of the blank (13) that peripherally surrounds the opening, and in that a (separate) blank (39) of packaging material is fastened by adhesive bonding to the closure means on the side facing the inner pack (12) and, in the closed position of the closure means, completely covers the opening and projects on all sides with an overlapping region (X) beyond an edge of the opening.