Detachable Closing Cap Structure for Easier Material Recycling
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Solution Overview
Problem
Existing closing cap arrangements made of multiple materials, such as aluminium and plastic, are difficult to recycle efficiently due to the need for material separation, which is often time-consuming and economically inefficient.
Innovation Solution
The closing cap arrangement features a detachable connection between the inner and enveloping caps, allowing for easy separation of components before recycling, with a minimized plastic portion and the option for uniform recycling of other components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If closing cap arrangements are made as material hybrids (aluminium and plastic), then functional requirements are met, but recycling becomes difficult and time-consuming
Solution Approach 1:
The closing cap arrangement is divided into separate components (inner cap and enveloping cap) made of different materials, connected by a detachable connection that allows easy separation for recycling purposes
2Manufacturing precision
If material separation is performed during recycling, then recycling quality improves, but time consumption increases
Solution Approach 1:
The detachable connection is designed in advance to enable easy separation of materials during recycling, performing the separation action beforehand through intelligent design rather than during the recycling process
3Productivity
If plastic portion is minimized, then recyclability of valuable materials improves, but functional requirements may be compromised
Solution Approach 1:
The plastic sealing element is extracted as a separate, easily removable component from the metal cap structure, allowing it to be taken out during recycling while maintaining its sealing function during use
Data Source
AI summary
The invention relates to a closing cap arrangement for being disposed on an outlet opening of a vessel realised as a pot or a bottle, the closing cap arrangement having a multipart design, the closing cap arrangement comprising an enveloping cap and an inner cap provided with a connective element for detachably connecting the closing cap arrangement to the outlet opening and realised independently of the enveloping cap, the inner cap and the enveloping cap being connected to each other via a detachable connection realised as a form-fit, substance-to-substance or force-fit connection, wherein a cap inner part (261) is formed as a clamping sleeve in an upper sleeve section, the clamping sleeve having a clamping cross section deviating in contour from a circular cross section of a collar (269), on which a push-on cap (260) is disposed.