Leak Detection for Package Containment

Non-destructive, non-contact method for leak testing of packaged goods using interferometry. The method involves irradiating a package surface with primary radiation and measuring the interference pattern. Then changing the ambient pressure and remeasuring. Comparing the interference patterns reveals package leakage. This allows testing of large numbers of packages without water baths or gases.

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Vacuum detection device and method for vacuum packaging that allows continuous in-line vacuum leak testing without discharging the packaged products. The device adds a small air leakage indicator to the packaging bags before sealing. After vacuum packing, the indicator changes state if there are leaks. A detection component with a color sensor monitors the indicator as the bags are conveyed. If the indicator indicates a leak, the bag is diverted for further action. This allows inline leak detection during automated vacuum packaging without the need for water immersion testing.

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Soft bag detection method that allows testing of both seal strength and overall leakage rate using a single instrument. The method involves connecting a detection tube with filters to the soft bag's inlet and outlet during testing. For sealing strength, the tube is sealed and pulled to measure force. For leakage rate, air pressure is applied and the change in pressure inside the bag is measured. The filters prevent external air contamination during testing.

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Leak testing of sealed packages with a gas-permeable material covering the opening and adhered around it. The test involves vacuuming the package to detect leaks through the opening and around the seal. By applying vacuum pressure and monitoring the pressure decay profile, it can determine if there are leaks compared to a reference profile from a non-leaky package.

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A component for testing the air tightness of packaging bags like those used for puffed food. The component has a frame with displacement assemblies on each side driven by independent driving assemblies. These assemblies lift the pressure plate and test platform to seal the bag and apply internal pressure. The air tightness is determined by measuring any leakage during pressurization.

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Accurately measuring the leakage aperture of pharmaceutical packaging systems using a positive sample detection device. The device has a test chamber with a connecting hole for the positive sample, gas charging/discharging, and vacuum maintenance. The vacuum is maintained using gauges and a piston cylinder with a scale. The chamber connects to a sealing tool to fix the positive sample in the hole. This allows accurate calibration of positive samples with known leak sizes for tightness testing of pharmaceutical packaging.

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Automated device for testing the sealing quality of food packaging bags. The device has a connecting plate with telescopic hydraulic columns to clamp bags. A cylinder lowers a pressure plate onto the bags to check for leaks. When the plate bursts the bag, a sensor collects data to analyze bag seal quality. The device improves efficiency and accuracy compared to manual testing. It also has features like a shock-absorbing base and magnets to prevent exploding bags from cluttering the lab.

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A mechanism to detect if packaged products have damaged or leaking bags without damaging the products themselves. The mechanism involves a rotatable sealed box connected to a door. Inside the box is a lifting mechanism with a push rod, balance bar, and top cover. The bottom plate and partition can be lifted out to place products. The box can be sealed, pressurized, and vacuumed to test for leaks. If the air pressure changes during testing, it indicates a damaged or leaking bag.

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A method for accurately detecting packaging leaks and determining leak severity using a specialized gas leak detection system. The method involves filling the packaging with a tracer gas, sealing it, and then vacuuming the chamber to detect the tracer gas. By varying the fill rate based on package material thickness, seals, and width, it allows quantifying leakage. The system can also simulate tests with known non-leaking and leaking samples to set detection parameters and verify accuracy.

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Device for detecting the sealing properties of medical packaging bags using a gas injection method. The device involves connecting a high-pressure air source to a detachable gas line tube that can be attached to the medical packaging bag. The tube has valves to regulate pressure and flow. The bag is submerged in a water tank to prevent bursting. A convex lens above the tank allows observation. This allows injecting high-pressure gas into the submerged bag to detect leaks without damaging the seals. A limiting grid keeps the bag below the water level. The water tank provides a containment structure to prevent explosion or bursting.

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A packaging bag air tightness detection device for efficiently testing the sealing integrity of bags. The device has a workbench with fixed supports for bag samples and clamping parts to hold them in place. Two sets of passive pressure detection structures, one on each sample, measure air leakage. An air pump connects to the bottom of the supports to inflate the bags. The clamping parts prevent expansion during inflation. By sealing the bags and pressurizing them, any leaks can be detected.

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Sealing tester with a pressurized inspection mechanism for testing the sealing performance of containers like bottles, flasks, and jars. The tester has an air compressor and exhaust pipe to pressurize the container being tested. It also has an inspection jar, buckle cover, lower pressure part, and pressurization part for sealing and pressurizing the container during testing. This allows measuring the container's sealing integrity by applying internal pressure and observing leakage.

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A differential pressure leak detection system for packaging machines that improves efficiency and accuracy compared to manual leak testing. The system involves vacuum sealing the packaged product inside a detection box and measuring the pressure differential between the inside and outside. If the differential is stable, it indicates no leak. If it changes, it indicates a leak. The system uses movable boxes, vacuum pumps, and sensors on the packaging line to automatically detect leaks without manual screening.

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Inspecting sealing defects in packages with flexible materials like plastic films and aluminum foil. The method involves placing the package in a station, covering it with a container, filling it with a gas, sucking the package surface, pressing it, and detecting the gas. If sealing is good, no gas enters. If defective, gas enters and is pushed out during pressing.

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Device for testing airtightness and pressure resistance of packaging bags during production. The device has a base, detection cylinder, piston, sliding rod, connecting plate, reset mechanisms, pressure sensor, placement plate, moving plate, vertical bar, fixed rod, pressing plate, and driving mechanism. The piston slides in the cylinder and the sliding rod extends below. The cylinder has a screen with a pressure sensor. The moving plate slides on the cylinder wall and is connected to the vertical bar. The fixed rod has the pressing plate. The driving mechanism moves the plate to compress the bag against the sensor. This allows testing airtightness and pressure resistance simultaneously.

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An inspection apparatus for accurately determining leakage of filling in packages without using odor. The apparatus uses a pressing section that moves into contact with the package to measure the pressing force. By measuring the force required to seal the package, it can detect if the filling is leaking. This allows precise detection of package sealing integrity without relying on odor.

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Leak testing of vacuum packaged products using a test station and method that can automatically check the tightness of vacuum packages in an inline production process. The test involves exposing the packages to a reduced test pressure, detecting any dimensional changes compared to the reference pressure, and using sensors to identify leaky packages. The test station has a chamber, vacuum generation, sensor system, evaluation unit, and control. It can check multiple packages at once. The method involves exposing packs to reduced test pressure, detecting dimensional changes, and comparing to identify leaks.

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A compact and efficient sealing detection device for food packaging that can quickly and easily detect leaks in sealed packaging. The device has a base with a support leg, an extrusion assembly with a push rod, spring, plate, block, and sensor, and an extrusion plate. The push rod extends from the support into the packaging to extrude the contents. The spring compresses as the contents push back. The sensor measures the force to detect leakage.

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A method for detecting the tightness of storage bags or stirring bags using a custom sealing detection device. The device has a movable plate that slides on a track frame. A pressure sensor is mounted on the plate facing the bag. The plate can be fixed at different positions on the track to accommodate bags of different sizes. By filling the bag with gas and monitoring the internal pressure over time, leaks can be detected. If a leak is found, a vent hole in the plate allows the gas to escape.

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Device for sampling leakage in soft medical packaging like infusion bags, syringes, etc. to test their seals. The device uses a vacuum pump to create negative pressure inside a chamber. Soft packages are placed inside the chamber and sealed. The vacuum is applied to draw air out of the packages through their seals. Leaks will allow air to enter the chamber and be detected.

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