Foil Package Sealing Defect Detection via Dynamic Distance Sensing
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Solution Overview
Problem
The packaging industry faces challenges in ensuring high-quality sealing of packages, particularly airtightness, due to insufficient manual monitoring, which can lead to quick degradation of product quality and microbiological safety risks.
Innovation Solution
A device equipped with distance sensors and a control unit to measure and compare the displacement of clamping elements during the sealing process, detecting defects by analyzing distance and speed data against predefined reference values, and generating alerts for defective seals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual monitoring of individual packages is used, then the packaging process can be kept simple, but the detection of sealing defects is time-consuming and costly
Solution Approach 1:
The patent replaces manual mechanical monitoring with an automated optical measurement system using distance sensors. The sensors non-contactively measure the distance between clamping elements during the sealing process, automatically detecting seal defects without human intervention. This substitution enables both high detection accuracy and rapid processing speed, resolving the contradiction between precise measurement and production efficiency.
2Measurement precision
If distance is measured only at static positions, then the measurement system is simple, but the detection of inclusions and seal quality is insufficient
Solution Approach 1:
The patent transitions from static distance measurement to dynamic measurement during the sealing process. Distance sensors continuously measure the gap between clamping elements as they move toward each other, capturing real-time changes in distance that indicate inclusions or seal defects. This dynamic approach enhances detection capability while maintaining relatively simple device architecture by utilizing the existing sealing motion.
Solution Approach 2:
The system performs measurements during the sealing process itself, before the seal is completed. By monitoring distance changes as clamping elements approach each other, the system detects defects early in the sealing process, enabling real-time quality control without requiring additional post-sealing inspection equipment.
3Reliability
If only final seal position is measured, then the measurement process is quick, but the detection of inclusions between clamping elements is not possible
Solution Approach 1:
The patent implements continuous distance measurement throughout the sealing process rather than taking a single measurement at the end. The distance sensors continuously monitor the gap between clamping elements as they move, ensuring that inclusions are detected at any stage of the sealing process. This continuous measurement approach maintains high reliability while the measurement time coincides with the necessary sealing operation time, minimizing additional time loss.
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
Enables quick, accurate, and reliable detection of sealing defects, improving product safety and quality by integrating into existing packaging lines or operating as a modular unit, enhancing the detection of inclusions and seal quality.
Implementation Method 1
at least one distance sensor for determining the distance between at least two relatively displaceable clamping elements
Data Source
Figure 1
Figure 2~3
AI summary
The invention relates to a device for detecting defects during sealing of a package comprising a foil. The invention also relates to a method for detecting defects during sealing of a package comprising a foil, particularly by making use of the device according to the invention.