Package Performance Standards

A method for testing the moisture vapor permeability of large-capacity packaging bags when traditional methods fail due to bag size limitations. The method involves filling the bag with a mixture of anhydrous calcium chloride and expanded polystyrene (EPS) foam particles instead of just anhydrous calcium chloride. This allows accurate testing of large bags that cannot be fully filled with desiccant alone. The bag with the mixed particles is sealed and weighed before and after a 24-hour test period. The change in weight represents the moisture absorbed by the bag and filling. The permeability is calculated based on the weight change and the bag volume.

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A device to accurately test the packaging quality of soft pack batteries like those used in electric vehicles. The device allows testing the packaging strength and leakage resistance of soft pack batteries in a more realistic manner compared to existing methods. It does this by securing the battery between fixed supports and applying pressure to simulate internal rupture conditions. The device has features like a load-bearing assembly, driving assembly, and ventilation joint to enable this testing. It also has a pressure detector to measure the force required to rupture the battery packaging. The device improves the accuracy of soft pack battery packaging effect testing, providing data support for battery development and packaging improvement.

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Detecting the packaging quality of soft-pack battery aluminum-plastic film to improve the packaging effectiveness and safety of lithium-ion batteries. The method involves a systematic and accurate testing process to inspect and determine the effect of the aluminum-plastic film casing packaging of soft-pack batteries. It involves measuring the average packaging tensile force of the plastic film case sample, inspecting the bonding condition of the aluminum-plastic film at the joints, and using a microscope to examine the film for any micro-pores or defects. These steps provide a comprehensive and reliable method to assess the packaging quality of soft-pack batteries using aluminum-plastic film.

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Rapidly evaluating the performance and quality stability of photovoltaic packaging films to identify reliability risks. The method involves pretreating the photovoltaic encapsulating film by constant temperature or cyclic high-low temperature exposure. This simulates transportation and storage conditions. The pretreated and untreated films are laminated and tested for cross-linking and peel strength. The pretreatment accelerates identifying reliability issues compared to long-term tests.

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Evaluating the indentation stiffness of packaging materials like cardboard for cigarette boxes. The method involves measuring the force required to bend a sample paper strip by 90 degrees after holding it for 15 seconds. This provides a more comprehensive way to assess the quality of indentations in packaging materials, which is important for determining the molding performance and appearance of packaged products like cigarettes.

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Method and system for accurate wear testing of packaging films. The method involves reading the film's basic info and device settings to generate a multi-scene test plan. The test plan is used to control the device to perform multi-scene wear tests on the film. During the tests, data is collected from the film, device, and scene verification. This data is used to compensate the wear test results. The compensated results are then fed into a wear analysis model along with the original test data to obtain accurate wear analysis. The system includes modules for reading film info, generating test plans, controlling the device, collecting data, compensating results, and feeding to the analysis model.

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A device and method for accurately measuring the drop resistance of packaging materials. The device has a test chamber, a clamping system, a drop platform, and an air tightness detection system. The packaging material is clamped and dropped onto the platform inside the chamber. After impact, the air tightness of the dropped bag is checked to determine if it remained sealed. This provides an objective, quantitative, and accurate way to evaluate packaging drop resistance compared to subjective visual inspection. The chamber allows testing at controlled temperatures and humidity to simulate transportation conditions.

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Method to accurately evaluate the packaging strength of soft pack lithium batteries to prevent premature opening and leakage due to internal gas buildup. The method involves measuring the packaging strength of the aluminum-plastic film used in soft pack lithium batteries after they are assembled. This is done by compressing the soft pack battery to a specific force, inflating an internal bladder to simulate gas expansion, and measuring the force required to open the packaging. This provides a more accurate representation of the packaging strength under actual battery conditions compared to testing the film alone.

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Packaging material, bag, and container for preventing moisture-induced degradation of sensitive items like pharmaceuticals, food, and electronics during storage. The packaging has a moisture-absorbing layer with specific thickness uniformity. The ratio of minimum to maximum thickness is 0.6 or higher. This reduces variations in moisture absorption capacity across the packaging. The moisture-absorbing layer contains a resin component and granular moisture absorbent. The resin component can be low-density polyethylene (LDPE). The packaging may also have a gas barrier layer. The packaging bag or container can be used for items sensitive to moisture to prevent degradation over time.

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Testing the compression resistance of heavy-duty packaging bags to determine their ability to withstand stacking loads. The method involves stacking the filled and sealed bags in 3 or more layers on a flat base with a top plate. Lowering the plate applies compression until the bags break. This closely simulates real-life stacking conditions versus testing single bags. The stacked configuration allows local loads that better reflect actual usage. It also stabilizes test results compared to tall stacks prone to misalignment.

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A test structure and method to evaluate the overall sealing effectiveness of pouch batteries. The test involves extruding the battery between two plates with a pressure sensor between them. By measuring the pressure required to deform the seals, it provides a quick and simple way to assess the heat sealing quality of pouch battery packaging materials. The test allows comprehensive, effective, and economic evaluation of the sealing strength and integrity of pouch battery packaging without destructive testing.

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A packaging box testing machine that can simulate the performance of electric vehicle packaging in humid and pressurized conditions to ensure durability during transportation. The machine has an enclosed chamber with a platform inside to hold the tested packaging. A humidifier above the platform sprays water to create a humid environment. Side walls with a vertical load mechanism apply pressure to the package. A controller can separately activate the humidifier and load mechanism based on signals. This allows testing electric vehicle packaging in humid and pressurized conditions to evaluate strength and durability.

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Determining the photoprotective performance of packaged products using a controlled light exposure chamber. The chamber provides uniform light dose to three-dimensional packages of varying shape and size. It allows studying multiple packages simultaneously to quantitatively compare light exposure effects. The chamber has temperature control, light sources, positioning mechanisms, and monitoring instruments. It enables determining the package's ability to protect contents from light-induced degradation by exposing filled packages to defined light doses at controlled temperatures.

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Method for evaluating the moisture barrier performance of three-dimensional cigarette cases. The method involves fitting and calculating data from moisture mass change kinetics experiments on cigarette cases in constant temperature and humidity environments. This provides a quantitative moisture barrier index for characterizing the performance of the entire package, individual packaging materials, and packaging gaps.

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Testing the water vapor transmission rate of polymer materials under pressure conditions to evaluate their water resistance for use in packaging materials for deep sea equipment. The method involves subjecting the polymer samples to high hydrostatic pressures while measuring their water vapor transmission rates. This allows assessing the material's water barrier performance at the actual pressures experienced by deep sea equipment.

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Testing the effect of different packaging materials on the browning quality of sour beans to find optimal packaging that reduces browning during storage. The test involves comparing browning, color, luster, polyphenol content, vitamin C content, amino nitrogen content, and air permeability of sour beans packaged in different materials like PET/PA/RCPP, PET/AL/PE, PA/CPE, and PET/PE. The results showed that PET/PA/RCPP packaging significantly reduced browning, oxidative polymerization of polyphenols, and oxidative decomposition of vitamin C compared to other materials.

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Microbial barrier testing system for breathable medical device packaging materials to accurately determine the microbial barrier performance of breathable medical device packaging materials. The system uses an aerosol chamber, aerosol generator, vacuum suction assembly, and mist evacuation assembly. It has features like separate mist exhaust and aerosol intake, environmental monitoring, and data analysis to ensure test success and accuracy by controlling variables like humidity, temperature, and aerosol concentration.

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A method to evaluate the safety of bio-based food packaging materials, especially plastic containers, in use. The method involves optimizing extraction conditions to quantify phthalates, a type of plasticizer, from the packaging. The phthalate levels are then measured in simulated food liquids like water, vinegar, and alcohol at different temperatures to study migration. This provides insights into potential leaching of phthalates from bio-based packaging into food during storage and reheating.

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Testing method to evaluate the melt adhesion properties of aluminum-plastic films used in lithium-ion battery packaging. The method allows predicting the melt glue effect of the film after electrolyte pollution before battery assembly. This enables faster, cheaper, and more accurate detection compared to visual inspection or mechanical testing methods. The steps involve long-term storage of batteries with the film exposed to electrolyte, followed by evaluating the film's resistance to electrolyte melting and encapsulation integrity. This simulates battery operation conditions and directly assesses the film's anti-pollution melt adhesion performance.

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A method for testing the packaging effectiveness of soft pack lithium batteries to evaluate the quality of the aluminum-plastic film encapsulation. The method involves a combination of steps to provide a more comprehensive assessment of the packaging. The steps include: (1) Applying a pressure of 200 kPa for 60 seconds to the battery to simulate internal gas pressure during production. (2) Immersing the battery in boiling water for 15 minutes to test the seal integrity. (3) Peeling off the aluminum-plastic film to inspect the bond between layers and check for gaps. This provides a visual assessment of the packaging quality. The combined steps provide a more accurate reflection of the packaging effectiveness compared to just measuring tensile force or peel strength.

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