Blow-moulded Parison Sterilization Sealing Mechanism
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Solution Overview
Problem
Existing methods for sterilizing thermoplastic parisons used in blow-molded container production face challenges in achieving reliable and efficient sterilization at high throughput rates, with issues such as uncontrolled sterilization agent release, temperature management, and increased machine construction costs.
Innovation Solution
A device comprising an applicator with a supply element and a resiliently tensioned press-on element allows for sealed and controlled supply and discharge of sterilization agents along the transport path, enabling efficient and reliable sterilization with a simple and cost-effective design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate treatment stations (heating module, sterilization module, second heating module) are used for sterilizing hot parisons, then sterilization can be performed, but the temperature behavior of the parison becomes difficult to control and sterilization agent exits uncontrolled
Solution Approach 1:
The patent combines the heating function and sterilization function into a single integrated treatment station. The sterilization module includes both heating elements and sterilization agent application systems, eliminating the need for separate heating modules before and after sterilization. This integration simplifies the overall machine construction while maintaining reliable sterilization through coordinated control of temperature and sterilization agent dosage.
2Productivity
If sterilization is performed with high throughput rates, then productivity increases, but sterilization agent discharge becomes uncontrolled and temperature management becomes difficult
Solution Approach 1:
The patent incorporates sensors and control systems that monitor temperature, sterilization agent concentration, and parison movement in real-time. This feedback mechanism allows the system to automatically adjust heating power, sterilization agent dosage, and processing timing to maintain reliable sterilization control even at high throughput rates. The controlled discharge of sterilization agent is achieved through precision dosing systems responsive to feedback signals.
3Ease of manufacture
If multiple separate modules are used for heating and sterilization, then each module can be optimized, but the overall device complexity and construction costs increase
Solution Approach 1:
The sterilization module is designed as a multi-functional unit that performs both heating and sterilization operations. The same module structure and positioning system are used for both functions, eliminating the need for separate specialized modules. This universal design reduces the total number of components, simplifies machine construction, and lowers overall complexity while maintaining the ability to optimize each function within the integrated 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
This solution ensures effective sterilization with reduced agent discharge and wear, supporting high throughput and a mechanically simple construction, while minimizing machine construction expenses and maintaining a compact design.
Implementation Method 1
at least one press-on element which can be tensioned resiliently between the applicator and the supply element
Data Source
AI summary
The present invention relates to a method and device for sterilizing parisons made of a thermoplastic material that are intended for producing blow-molded containers. During the sterilizing process a sterilizing agent is introduced into an interior of the parison by an applicator. At least one gas is supplied to the applicator via at least one supply element, at least sections of which are arranged in a horizontal direction next to a transport path of the applicator. The supply element comprises at least one outlet opening facing towards the applicator. At least one pressure-applying element is arranged between the applicator and the supply element and is resiliently clamped between the applicator and the supply element.