Closure Element Sterilization via Dynamic Holding Mechanism
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Solution Overview
Problem
Existing methods for sterilizing closure elements for packaging containers do not effectively sterilize all surfaces, particularly those in contact with holding mechanisms, which can lead to incomplete sterilization and potential contamination during food packaging.
Innovation Solution
A method and device that utilize a holding mechanism to temporarily release closure elements from holding mechanisms, allowing sterilizing media like hot air and vaporous hydrogen peroxide to contact all surfaces, including areas previously protected, through a multi-phase sterilization process involving hot air, vaporous agents, and drying.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the holding mechanism continuously holds the closure elements during conveying, then the closure elements can be securely transported, but the sterilizing medium cannot contact all surfaces particularly those in contact with the holding mechanism
Solution Approach 1:
The holding mechanism transitions from a static continuous-hold state to a dynamic alternating state, where holding elements periodically release and re-grasp the closure element. This dynamic operation allows the sterilizing medium to contact all surfaces including those previously protected by the holding mechanism, while maintaining secure transport throughout the process.
Solution Approach 2:
The holding mechanism operates in periodic cycles: during the first phase, holding elements are in contact with the closure element for secure transport; during the second phase, holding elements release to allow sterilizing medium contact; during the third phase, holding elements re-grasp for positioning. This periodic action resolves the contradiction between continuous holding and complete sterilization.
2Reliability
If the holding mechanism maintains continuous contact with closure elements, then transport stability is ensured, but complete sterilization of all surfaces cannot be achieved
Solution Approach 1:
The holding mechanism dynamically adjusts its contact state with the closure element during the conveying process. By alternating between contact and release phases, it maintains transport stability when needed while enabling complete sterilization when required, without complicating the overall conveying operation.
3Reliability
If all surfaces of closure elements are sterilized by allowing temporary release from holding mechanism, then complete sterilization is achieved, but the conveying process becomes more complex
Solution Approach 1:
The holding mechanism is segmented into multiple independent holding elements that can operate autonomously. Each holding element can be individually controlled to release and re-grasp the closure element, enabling complete sterilization without requiring complex structural modifications to the overall conveying system.
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
Ensures complete sterilization of closure elements, meeting strict food technology standards by ensuring all surfaces are treated, thereby preventing germ contact with packaged food.
Implementation Method 1
a first phase in which hot air acts as sterilizing medium on the closure elements
Implementation Method 2
a second phase in which vaporous sterilizing agent acts as sterilizing medium, in particular containing hydrogen peroxide
Implementation Method 3
a third phase in which the closure elements are dried with hot air
Implementation Method 4
lid-shaped closure elements are withdrawn by means of suction cups from a stack of closure elements
Data Source
AI summary
A method for sterilizing closure elements (3) for packaging containers (1), wherein the closure elements (3) are collected individually by a holding mechanism (25) in the region of a sterile chamber (12) and are placed onto an opening (4) of a filled packaging container (1) and connected to the latter, and wherein the closure elements (3), while being conveyed inside the sterile chamber (12), are treated by means of at least one sterilizing medium (6, 7, 52) during a sterilizing process.