Reusable Container Structure With Replaceable Inner Liner
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Solution Overview
Problem
Existing transport containers for liquids and bulk goods, particularly paints, face issues with sustainability, reusability, and recyclability due to material limitations, contamination, and complex separation processes, especially in cardboard and metal/plastic containers.
Innovation Solution
A reusable container composed of paper fiber, plastic, and/or metal with a multi-layered structure, featuring a dimensionally stable outer container and a removable inner layer, secured by an adhesive ring and band, allowing easy separation and recycling, and a lid design that ensures liquid-tight sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cardboard containers are used to meet ecological requirements, then sustainability is improved, but diffusion resistance decreases and reusability is reduced due to contamination
Solution Approach 1:
The container is divided into two distinct parts: a reusable outer container made of cardboard and a disposable inner container that is liquid-proof. This segmentation allows the outer container to be reused after the inner container is removed and disposed of, solving the contradiction between sustainability and reusability.
Solution Approach 2:
The inner container is designed as a disposable component that is discarded after use. This allows the outer container to remain clean and reusable, while the disposable inner container provides the necessary liquid-proof functionality without compromising the sustainability of the overall system.
2Object-affected harmful factors
If internal coating is applied to cardboard containers to make them liquid-proof, then diffusion resistance is improved, but reusability and recyclability deteriorate due to contamination and complex separation processes
Solution Approach 1:
Instead of coating the cardboard container, the solution segments the container into an uncoated outer container and a separate disposable inner container that provides the liquid-proof barrier. This eliminates the need for coating separation during recycling.
Solution Approach 2:
The liquid-proof function is extracted from the cardboard container and placed into a separate disposable inner container. This extraction allows the outer container to remain simple and easily recyclable, while the inner container handles the liquid-proof requirement.
3Reliability
If sheet metal or plastic containers are used, then reusability is improved, but resource consumption and sustainability worsen
Solution Approach 1:
The container combines cardboard (renewable resource) with a thin plastic film inner container. This composite structure allows the main body to be made from sustainable materials while the disposable inner layer provides the necessary liquid-proof properties, reducing overall resource consumption compared to fully plastic containers.
Solution Approach 2:
The inner container is designed as a disposable thin plastic component that is replaced rather than cleaned and reused. This approach reduces the resource consumption associated with cleaning and maintaining reusable plastic containers while still achieving the desired reusability of the outer container.
4Stability of the object's composition
If the inner container is attached to the outer container, then structural stability is improved, but ease of separation and recycling worsens
Solution Approach 1:
The inner container is designed to be pre-assembled and then easily inserted into the outer container without permanent attachment. This preliminary preparation allows for easy separation during recycling while maintaining structural stability during use.
Solution Approach 2:
The inner container is nested within the outer container, fitting inside without permanent attachment. This nesting arrangement provides structural stability during transport and use while allowing easy removal and separation for recycling purposes.
Data Source
Figure 1
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AI summary
The invention relates to a reusable container comprising a container body, a mold insert, an adhesive ring, a band, and a lid, wherein the container body has a base body shell and a base body bottom and is made of a paper fiber material, plastic material, and/or metal material, wherein the mold insert is made of a plastic film material, has a container-shaped main section that is arranged in and lines the container body, further comprising an overlapping section that overlaps the base body shell, wherein the adhesive ring is arranged on an outer surface of the overlapping section, wherein the band is arranged circumferentially on an outer surface of the shell, enclosing the overlapping section and the base body shell, and is in an adhesive bond with the adhesive ring, wherein the lid has a dimensionally stable lid body.which has a circumferential axial rim groove and a lid molding film arranged on the lid base body, wherein the reusable container is designed for a closed state in which the lid is placed on the base body shell, the axial rim groove overlaps the shell edge section and the lid molding film presses circumferentially against the mold insert in a sealing manner at the shell edge section, wherein the container base body and lid base body are designed as reusable components and wherein the mold insert, the adhesive ring, the banderole and the lid molding film are designed as replaceable components detachably connected to the reusable components.