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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Flexible and efficient device for testing the sealing air tightness of plastic packaging bags. It uses a moving assembly with a motorized lifting mechanism to move a pressure sensor over the bag. This allows the sensor to be pressed against the bag without the bag slipping, preventing water droplets from forming. The bag can also be fixed in place to prevent sliding. The flexible moving assembly provides flexibility in detection compared to fixed devices.

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An apparatus, plant, and method for inspecting flexible packages like food and pharmaceutical products for defects like leaks. The inspection involves placing a package sample in a chamber, creating a vacuum, and monitoring pressure changes. If the chamber pressure remains normal after vacuum, it indicates the package has minimal leaks. The method can be automated with robots to pick packages and a sliding chamber to avoid pressure differences. The apparatus has sensors, transducers, and encoders to measure chamber pressure, displacements, and deformations.

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An automated device to check for air leaks in sealed packaging bags after sealing. The device has a slanted groove with an open top and an air blower attached. A sliding plate covers the groove when sealed. If the bag leaks, air will enter the groove during sealing and be blown out by the blower. This opens the groove cover and activates collection mechanisms to catch leaking products.

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Testing device and method for the tightness of rigid packaging containers like vials with vacuum levels, like for freeze-dried drugs, that can quickly and easily evaluate sealing integrity using vacuum decay. The method involves measuring the rate of air entering the container over time as vacuum decreases during storage. This rate is compared to a threshold that can affect drug quality to assess container tightness. The threshold is calculated based on the maximum allowable leakage rate to maintain vacuum above a level needed for drug stability during shelf life.

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Air tightness detection device for packaging bags that allows rapid and automated testing of bag sealing integrity. The device has a clamping assembly to secure the bag being tested. Inside the bag, an inflatable head with an air pressure sensor is connected to a pump via a sealed tube. The pump inflates the head inside the sealed bag to detect if any air leaks. A solenoid valve controls the pump. This allows automated air tightness testing of bags without water immersion or manual inflation.

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Ultra-precision air tightness detection device for soft bags and special-shaped packaging that enables high accuracy air tightness testing of flexible packaging bags. The device uses multiple vacuum chambers with sensors, pneumatic and vacuum valves, and a rotating shaft to tightly seal and test the bags. An industrial computer and data acquisition board process the vacuum pressure readings. This allows precise detection of very small air leaks in flexible packaging that cannot be detected by traditional methods.

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Automatic product packaging tightness inspection system that uses an air extraction box and pump to detect leaks in sealed packages. The system has a conveyor belt with an air extraction box that removes air from around the product. If the packaging has gaps, air will be evacuated, causing the package to deflate. This allows automated detection of leaks without manual inspection. Products with gaps are separated and collected.

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Airtightness testing device for food packaging bags that allows efficient testing of bags of different sizes. The device has a fixed frame with a movable plate that can be adjusted to grip bags of varying sizes. When tested, the plate moves into a water tank containing a submerged box. An air cylinder expands the bag, forcing water into the box. Bubbles in the water indicate leakage. The device enables bag testing without needing to swap out different fixtures for bags of different sizes.

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Packaging seal test device that allows non-destructive testing of sealed bags without the need for immersion in water. The device has a rotating mechanism with an air hose attached that can be blown into the bag to check for leaks. The bag clamping mechanism holds the bag against the rotating air nozzle. The device also has a movable upper plate to store tested bags.

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An air leakage detection system for packaging bags of dietary granules that integrates airtightness and compression strength testing to prevent defective bags. The system has a vacuum chamber, air pump, and central controller. The method involves vacuuming the bag to detect leaks, then pressurizing it to check compression strength. This combined test reduces false positives and false negatives compared to separate tests.

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A vacuum leak detection system for packaging containers that allows automated and efficient detection of vacuum seal quality. The system uses multiple calibration tanks connected to a vacuum pump and a constant pressure tank. Valves allow switching between the tanks. Vacuum pressure sensors measure absolute pressure in each tank. This allows calibration curves to be built for each tank. During production, the container lid is sealed and the container connected to a calibration tank. The vacuum pump is used to create a vacuum, and the pressure measured. It is then compared to the calibration curve for that tank to determine if there is a leak. This provides accurate and consistent vacuum leak detection without manual inspection.

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A fast and reliable leak detection method for flexible, soft, and semi-rigid packages like food, toothpaste, and pharmaceutical containers. The method involves applying pressure to the package after filling and sealing, then detecting leaks using a hydrogen gas sensor. The hydrogen is used as a tracer gas inside the package during filling. When a leak is present, hydrogen escapes and the sensor detects a decreasing concentration. By monitoring the slope of the concentration over time, leaks can be detected quickly without waiting for gas diffusion.

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Air tightness testing platform for packaging products that provides visual observation of leakage. It has a bottom plate with a detection box containing a pressure sensor and a connected pump. The box has a left pressure pipe to pump air and a right relief pipe with a valve. A side plate connects to the top plate which has a motor to move a threaded rod into a casing. The top cover has a connecting rod with a sealing pad. This allows tightness testing with visual inspection of air flow through the relief valve and sealing pad during pumping and retraction.

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Nondestructive testing method for flexible packages to detect leaks without breaking the seal. The method involves submerging a filled package in a vacuum chamber with a viewing port. Vacuum is applied to expand the package, and the expansion is measured to hold it constant. Visual inspection inside the chamber detects bubbles or other leak indications. This allows identifying leaks without rupturing the package or needing external pressure.

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Vacuum leak detection system for packaging containers like food and pharmaceutical products to improve quality control. The system uses a vacuum pump and tank to create a constant vacuum pressure. A baffle valve allows the vacuum to be connected to the container lid during testing. If the container has a vacuum leak, air will enter and break the vacuum, indicating a faulty seal. The constant vacuum pressure reduces testing time compared to traditional methods that balance vacuum levels. The system can be integrated into packaging lines for automated leak detection.

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Method and equipment for detecting leaks in packaged products like food items under modified atmospheres without slowing down production rates or requiring destructive testing. The method involves placing the packaged product under vacuum and measuring the leaking gas like CO2. If tracer gas is detected, it indicates a leak. The equipment has a conveyor with a movable cover that lowers over a detected package to create a sealed chamber. Vacuum is applied to the chamber to measure the leaking gas.

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Packaging machine device for detecting whether a packaging bag and discharge section leak materials during filling and discharging. The device has mechanisms to check for leaks at various points in the filling process. Inside the packaging area, a charging detection mechanism uses a sliding block with a weight inside to detect leakage during filling. The sliding block is guided by fixed metal blocks and moves between a charging groove and a sensitive weight measuring block. The charging groove is connected to the packaging bag transmission groove. A circuit between an electromagnet and power supply moves the sliding block when charging. If the sliding block moves excessively, indicating leakage, an alarm is triggered. Additionally, an air flow detection mechanism inside the packaging bag detects seal integrity.

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Simple and intuitive mechanism for testing the air tightness of food packaging. It has a top plate and a seat below it with a groove. A telescoping cylinder connects the top plate to a box that fits in the groove. The box has an air compressor inside. The cylinder allows the box to move up and down. When the box is pressed against the seat, it seals the groove. The compressor can then fill the box with air. The reaction device on the top of the box shows if there are leaks. If the box moves up and down without leaks, it indicates tight packaging.

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A negative pressure air tightness detection device for food packaging that can efficiently and accurately test the airtightness of food packaging on assembly lines. The device uses a mechanism where a cylinder seals around the packaging bag and creates a vacuum inside. This allows detection of leaks in the packaging by monitoring pressure changes. The device is mounted on a conveyor belt and can test multiple bags simultaneously. It improves efficiency compared to traditional methods like water immersion.

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Automated device for detecting defects in packaging bags like plastic bags. The device has features like a squeezing mechanism to stretch the bags for inspection, positioning to move the bags to expose defects, and a detection mechanism to check bag pressure. It replaces manual visual inspection with automated detection of leaks and strength issues. The device can be integrated into bag production lines to improve quality control.

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Device to detect air leaks in food packaging bags. The device has a chamber with a piston that seals against the bag interior. A motor moves the piston to apply pressure inside the bag. Sensors detect when pressure drops, indicating an air leak. The device also has a conveyor to move bags through the chamber for testing. It can be integrated into production lines to automatically detect leaky bags.

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A method to inspect the airtightness of objects enclosed in sealed containers using a simple and inexpensive sensor setup. The method involves reducing the pressure inside the container in steps to progressively higher vacuum levels. Between vacuum levels, the sensor detects leaks and uses the reference value as a baseline. By comparing the leak detection values at different vacuum levels, the airtightness of the enclosed object can be determined.

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An automated packaging tightness testing device that can accurately determine if a flexible packaging bag has proper sealing without soaking the bag in water. The device has a sliding mechanism with blocks, rods, and splints that move when the limit plate is pushed. The splints have pressure sensors on their inner walls. When the limit plate slides the splints abut against the bag, and if the pressure sensor readings are stable, it indicates better sealing. This avoids water soaking during testing. The device also has an air inlet pipe that connects to the bag when sliding it, inflating the bag to check for leaks.

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Sealing test device for pouch tablet packaging production lines that provides a more accurate, standardized, and automated method to detect leaks in packaged tablets. The device involves placing a sealed pouch in a test box and quickly pressurizing it to a critical level using a pump. A pressure sensor detects the pressure and a decibel detector monitors for sudden noise increases indicative of air leaks. This allows quantitative detection, eliminates human error, and reduces operator involvement compared to traditional methods.

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A system and method for detecting air tightness of flexible packaging that provides a non-destructive, automated, and accurate way to test the seal integrity of flexible packages. The system uses a vacuum chamber, pressure sensors, valves, and a gas storage tank. It steps through evacuating the chamber, then filling it with a known pressure gas to detect large leaks, then back to vacuum for small leaks. This allows differentiating between major and minor leaks. The system eliminates human error and enables automated, rapid, and repeatable air tightness testing.

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Online packaging air tightness testing equipment to automatically detect and reject leaky packages in production lines. The equipment uses a compressor above the conveyor belt to squeeze the packages. A thickness sensor measures the compressed thickness. If it falls outside a threshold, a rejection device kicks out the leaky package using an air nozzle. The compressor has multiple rollers below the belt to compress the packages. The thickness sensor is mounted on the lower roller.

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Fully automatic powder packaging machine with air leak testing to ensure sealed bags prevent moisture damage. The machine has a leak detection box connected to the packaging head. After filling, bags go into the box for air tightness testing. If leakage is detected, bags are diverted to an opening where contents spill out. This prevents dampening and spoilage of powdery products by ensuring sealed bags. The box has an air inlet, outlet, and bag inflation port. When bags are fully sealed, the inflated bag size is compared to a threshold. If larger, it means internal air leaked and the bag is rejected.

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A packaging bag leak detection device to automatically test air tightness of bags without water immersion. The device has a sealed chamber that is inflated to fill with air. If the bag leaks, the chamber volume changes. A sensor monitors the level. If it fluctuates, it indicates the bag leaks. The chamber can be moved, raised/lowered, and the bag inserted/removed using mechanisms. A controller coordinates the movements.

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A device for accurately testing the airtightness of packaging containers. The device has a water tank, an air supply line, and a controller. The water tank has a level sensor and the controller controls the water pump based on the level. The air supply line has a pressure sensor and the controller adjusts the valve based on the pressure. This allows precise control over the water and air pressures in the container during testing. It provides a more accurate and reliable test compared to methods like soapy water that can miss leaks.

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Dynamic vacuum decay leak testing for sealed containers like vials, syringes, and ampoules to improve detection of sub-visible leaks. The testing involves pulling vacuum on the container in a chamber and monitoring vacuum decay. But instead of stopping when target vacuum is reached, a timer is initiated when a threshold vacuum is reached. The vacuum source is isolated after the timer expires. This delays chamber isolation until some air is evacuated to prevent leakless containers from being falsely passed.

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