Biodegradable Sanitary Article Packaging With Glue-Free Closure
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Solution Overview
Problem
Existing packaging methods for absorbent sanitary articles, such as feminine hygiene products, rely heavily on thermoplastic wrapping, which generates significant plastic waste and limits the use of flexible, non-plastic materials due to packaging challenges with compressed and irregularly shaped packs, and closure formations obstruct commercial communication on the package.
Innovation Solution
A packaging method using a biodegradable packaging sheet and closure sheet, where the packaging sheet is wrapped around the longitudinal faces of a pack of absorbent sanitary articles, forming trapezoid closure flaps, and a closure sheet is applied to secure the package without glue, allowing all external surfaces for graphic display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If thermoplastic wrapping is used for packaging absorbent sanitary articles, then the packaging provides secure containment and protection, but it generates significant plastic waste and limits the use of flexible non-plastic materials
Solution Approach 1:
The patent changes the material parameter from thermoplastic to biodegradable packaging sheet, fundamentally altering the environmental impact while maintaining packaging functionality. This parameter change enables the package to be compostable and reduces plastic waste accumulation.
Solution Approach 2:
The patent employs a composite packaging structure combining biodegradable packaging sheet with closure sheet, creating a multi-layer system that provides both containment and closure functions. This composite approach allows the package to maintain reliability while being environmentally friendly.
2Reliability
If closure formations are used to secure the package, then the packaging maintains integrity and protection, but the closure formations obstruct commercial communication on the package surfaces
Solution Approach 1:
The patent segments the packaging system into distinct functional components: the packaging sheet provides containment with graphic display surfaces, while the closure sheet provides securing function. This segmentation allows each component to optimize its specific function without compromising the other.
Solution Approach 2:
The closure function is extracted from the packaging sheet and transferred to a separate closure sheet. This extraction allows the packaging sheet to have uninterrupted graphic display surfaces while the closure sheet handles the securing function, eliminating the obstruction of closure formations on commercial communication areas.
3Productivity
If pre-formed plastic bags are used for packaging, then the packaging process is simple and efficient, but the packaging machine complexity increases and plastic waste is generated
Solution Approach 1:
The patent uses disposable biodegradable packaging sheets that are discarded after use, eliminating the need for complex reusable plastic bag systems. This approach simplifies the packaging machine requirements while maintaining high productivity through a straightforward wrap-and-seal process.
Data Source
AI summary
A package of absorbent sanitary articles, includes: a pack formed by a plurality of absorbent sanitary articles having respective main faces parallel to each other and parallel to a longitudinal direction; a packaging sheet wrapped around the longitudinal faces of the pack and folded to form trapezoid closure flaps extending over the transverse faces of the pack; and a closure sheet wrapped around the pack, wherein the closure sheet has two opposite longitudinal sections extending over two opposite longitudinal faces of the pack and two opposite transverse sections extending over the respective transverse faces above the respective closure flaps.