Relief Loop Strapping for Beverage Pack Stability
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Solution Overview
Problem
Existing packaging methods for beverage containers, such as those using shrink films, are energy-intensive, costly, and inconvenient for users due to high pre-stress strapping that can loosen whip-like when opened, requiring additional tools for release.
Innovation Solution
A pack arrangement using a compact, ribbon-like strapping with relief loops that are either integrated into the contact site or spaced apart, allowing for easier handling and removal by distributing the tension, reducing the need for high pre-stress and additional tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If shrink films are used to combine beverage containers into packs, then the containers are securely held together, but energy consumption increases and production costs rise
Solution Approach 1:
The patent extracts the harmful shrink film material from the packaging system and replaces it with a reusable strapping band made of rigid or semi-rigid plastic. This eliminates the need for energy-intensive shrinking tunnels and hot air supply systems, directly addressing the energy consumption problem while maintaining pack stability through the strapping's mechanical tension and loop structure.
Solution Approach 2:
The invention changes the physical state and properties of the packaging material from flexible thermoplastic film requiring thermal shrinking to rigid or semi-rigid plastic bands that maintain their shape through inherent structural properties. This parameter change eliminates the need for thermal energy input during the packaging process.
2Stability of the object's composition
If high pre-stress is applied to the strapping to stabilize the pack, then the pack becomes stable, but the strapping loosens in a whip-like manner when opened
Solution Approach 1:
The strapping band is segmented into distinct functional zones: a rigid contact region that maintains pack stability, a flexible relief loop section that absorbs tension during removal, and a handle section for user grip. This segmentation allows the strapping to remain stable during use while enabling controlled, non-whip-like removal when the relief loop is engaged.
Solution Approach 2:
The relief loop is pre-formed as a flexible section within the strapping band to beforehand cushion and absorb the mechanical energy that would otherwise cause whip-like loosening during opening. This pre-positioned flexible element acts as a shock absorber, allowing the strapping to be removed in a controlled manner without sudden releases of stored elastic energy.
3Stability of the object's composition
If the strapping ends are firmly glued and welded together to form a closed loop, then the pack stability increases, but the strapping becomes difficult to release without additional tools
Solution Approach 1:
The strapping band is segmented into a permanently bonded closed loop for stability and a separate handle section with the relief loop for easy release. The handle section is attached to the loop but designed to be detachable, providing a clear separation between the stable packaging structure and the user-interface component intended for removal.
Solution Approach 2:
The relief loop acts as an intermediary element between the stable closed-loop strapping and the user's hand. By providing a dedicated flexible loop section, the design mediates the force application during removal, allowing users to easily engage and detach the strapping without needing additional tools while maintaining pack integrity during normal use.
4Ease of operation
If a relief loop is integrated into the strapping to ease removal, then the ease of operation improves, but the device complexity increases
Solution Approach 1:
The relief loop is merged directly into the strapping band as an integrated component rather than being a separate attachment. This merging combines the structural function of the strapping with the release mechanism function of the relief loop, eliminating the need for additional separate parts while still providing easy removal capability.
Solution Approach 2:
The strapping band is designed with multi-functionality: the same continuous piece of material provides both the stable closed-loop structure for packholding and the flexible relief loop section for easy removal. This universal design uses a single component to fulfill multiple functions, reducing overall device complexity despite the added operational capability.
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 solution provides a cost-effective, stable, and user-friendly packaging method that reduces energy consumption and investment costs by using recyclable materials and eliminating the need for a shrinking tunnel, while ensuring secure container alignment and easy strapping removal without tools.
Implementation Method 1
The strapping pulls the containers together, thereby stabilizing the pack. To take containers out of the pack, the pack needs to be opened by severing the strapping from the pack. The strapping is usually either pulled off or cut off. To guarantee a stabile pack the strapping is applied around the containers with a certain tension or pre-stress.
Implementation Method 2
According to the invention the strapping comprises at least one loop that acts as a relief loop or as a so called compensator. The strapping optionally comprises at least one loop at the contact site and/or spaced apart from the contact site.
Data Source
AI summary
A pack including at least two articles or PET containers combined with each other, which are held together by means of a strip-like or ribbon-like compact strapping and said strapping being stretched around an outer surface of the articles or PET containers in a horizontal manner. The strapping is made of one, two or more similar or different plastic strapping band or bands made of a composite material with overlapping ends each whereby a single part or multi part contact point is formed by gluing and/or welding. The strapping forms a relief loop at the contact site or apart from the contact site.