Challenges and Testing Requirements for Food Packaging

Food packaging plays a pivotal role in preserving product quality, extending shelf life, and maintaining consumer safety. While traditional packaging materials like glass and metal have been widely used, flexible packaging options like plastic films and pouches have gained significant traction due to their cost-effectiveness, versatility, and environmental benefits. However, ensuring the integrity and functionality of these packages requires rigorous testing to guarantee product protection.

Food packaging faces challenges in maintaining product quality. Factors such as oxygen, moisture, and light can accelerate food degradation, leading to loss of flavor, texture, and nutritional value. Additionally, the packaging material's mechanical properties must be sufficient to withstand the rigors of the supply chain.

To address these challenges, comprehensive testing is essential. Key areas of focus include:

Oxygen transmission rate (OTR): Measures the rate at which oxygen permeates the packaging material.

Water vapor transmission rate (WVTR): Determines the amount of water vapor passing through the packaging.

Carbon dioxide transmission rate (CO2TR): Evaluates the packaging's resistance to carbon dioxide, crucial for carbonated beverages and modified atmosphere packaging.

Labthink C406H Oxygen /Water Vapor Transmission Rate Test System is based on the testing principle of Coulometric oxygen sensor and infrared water vapor sensor. It is designed and manufactured according to ASTM D3985、ASTM F1249，ISO 15106-2 and other relevant standards to provide high precision and high efficiency oxygen and water vapor transmission rate tests for high and medium gas barrier materials. It is suitable for testing the oxygen and water vapor transmission performance of films, sheets and related materials in the fields of food, medicine, medical devices, daily chemicals, photovoltaic, electronic and many others.

Seal integrity and Seal strength: Verifies the strength and reliability of package seals to prevent leaks and contamination. Measures the force required to break the seal.

Impact resistance: Evaluates the packaging's ability to withstand impact during handling and transportation.

Thorough testing of food packaging is indispensable for maintaining product quality, safety, and consumer satisfaction. By understanding the critical role of barrier properties, sealing performance, and mechanical strength, packaging manufacturers can develop effective solutions to protect food products throughout their shelf life. As the food industry continues to evolve, ongoing research and development in packaging materials and testing methodologies will be crucial for meeting the demands of consumers and regulatory bodies.

As the demand for functional packaging materials grows, testing methods are evolving to ensure a more comprehensive evaluation of packaging films. Labthink encourages collaboration with packaging industry companies for quality control! Visit the website www.labthink.com to learn more!

Food Packaging Testing Solutions Extending Shelf Life

The processed food industry is heavily reliant on packaging to maintain product quality and ensure consumer safety. Packaging serves as a crucial barrier, protecting food from external factors that can accelerate spoilage, such as moisture, oxygen, and contaminants.

To achieve optimal product shelf life, packaging must be meticulously designed and tested. A key consideration is the packaging's barrier properties. For instance, water vapor transmission rate (WVTR) measures the amount of moisture passing through the packaging, while oxygen transmission rate (OTR) indicates the amount of oxygen that permeates the material. These parameters are critical in preventing spoilage caused by oxidation, moisture, and microbial growth.

Testing the packaging's ability to protect against organic compounds is equally important. These compounds, responsible for flavors and aromas, can migrate through packaging materials, affecting product quality. While WVTR and OTR testing methodologies are well-established, evaluating the transmission of organic compounds remains a complex challenge. However, recent advancements in analytical instrumentation have made significant strides in this area, enabling more precise measurement of these critical factors.

Labthink C403H Oxygen /Water Vapor Transmission Rate Test System is based on the testing principle of Coulometric oxygen sensor and infrared water vapor sensor. It is designed and manufactured according to ASTM D3985、ASTM F1249，ISO 15106-2 and other relevant standards to provide high precision and high efficiency oxygen and water vapor transmission rate tests for high and medium gas barrier materials. It is suitable for testing the oxygen and water vapor transmission performance of films, sheets and related materials in the fields of food, medicine, medical devices, daily chemicals, photovoltaic, electronic and many others.

In addition to barrier properties, packaging must also withstand the rigors of the supply chain. Tests for factors like seal integrity, puncture resistance, and impact resistance are essential to ensure product protection during transportation and storage.

As consumer demand for high-quality, longer-lasting food products grows, the development of innovative packaging solutions becomes increasingly critical. By investing in rigorous testing and analysis, the food industry can optimize packaging design, extend product shelf life, and ultimately deliver superior products to consumers.

As the demand for functional packaging materials grows, testing methods are evolving to ensure a more comprehensive evaluation of packaging films. Labthink encourages collaboration with packaging industry companies for quality control! Visit the website www.labthink.com to learn more!

Comprehensive Packaging Functionality Testing for Prolonging Cosmetic Shelf Life

The beauty and cosmetic industry relies heavily on packaging to preserve product integrity, ensuring consumer safety and satisfaction. A product's shelf life is significantly influenced by its packaging, which acts as a barrier against external factors that can degrade its quality.

Humidity is a critical factor impacting cosmetic storage. Excessive moisture can lead to product spoilage, while low humidity can cause dryness and texture changes. Additionally, cosmetics are susceptible to contamination by microorganisms, which can thrive in suboptimal storage conditions. Therefore, maintaining a controlled environment is paramount for product longevity.

Packaging plays a pivotal role in safeguarding cosmetics from environmental influences. The packaging structure typically includes multiple layers, each with specific properties. For instance, inner layers might be designed to prevent moisture transfer, while outer layers protect against physical damage. The barrier properties of packaging materials, such as oxygen and water vapor transmission rates, are crucial in preserving product freshness and preventing oxidation or microbial growth.

To assess packaging performance, rigorous testing is essential. Key parameters include water vapor transmission rate, oxygen transmission rate, and the ability to protect against various organic compounds responsible for fragrance or color degradation. Furthermore, packaging must be compatible with high-speed production lines, requiring tests for factors like coefficient of friction, heat shrinkage, and thickness.

While testing methodologies for water vapor and oxygen transmission rates are well-established, evaluating the transmission of organic compounds, which significantly impact product sensory attributes, remains a complex challenge. Recent advancements in testing equipment have made significant strides in this area, enabling more accurate assessment of packaging performance in preserving product fragrance and color.

 



Labthink C406H Oxygen /Water Vapor Transmission Rate Test System is based on the testing principle of Coulometric oxygen sensor and infrared water vapor sensor. It is designed and manufactured according to ASTM D3985、ASTM F1249，ISO 15106-2 and other relevant standards to provide high precision and high efficiency oxygen and water vapor transmission rate tests for high and medium gas barrier materials. It is suitable for testing the oxygen and water vapor transmission performance of films, sheets and related materials in the fields of food, medicine, medical devices, daily chemicals, photovoltaic, electronic and many others.

In conclusion, optimal packaging is indispensable for maintaining cosmetic product quality. By understanding the critical factors affecting product stability and employing comprehensive testing protocols, the beauty industry can ensure consumer satisfaction and brand reputation. As consumer demands for high-performance and luxury products continue to rise, the development of innovative packaging solutions that extend product shelf life while delivering exceptional consumer experiences will be paramount.

As the demand for functional packaging materials grows, testing methods are evolving to ensure a more comprehensive evaluation of packaging films. Labthink encourages collaboration with packaging industry companies for quality control! Visit the website www.labthink.com to learn more!

Critical Testing Parameters for pharmaceutical Packaging Film Performance

The quality of pharmaceutical packaging is critical in maintaining product efficacy, safety, and patient compliance. Rigorous testing is essential to guarantee these standards.

Barrier Property Testing:

Water Vapor Transmission Rate (WVTR): This measures the amount of water vapor passing through the packaging material. It's crucial for preventing moisture-sensitive pharmaceuticals from degradation.

Oxygen Transmission Rate (OTR): While less critical for many pharmaceuticals, OTR testing is essential for oxygen-sensitive drugs.

Organic Gas Transmission Rate (OGTR): This measures the permeability of the packaging to organic compounds, which can affect drug stability.

Labthink C406H Oxygen /Water Vapor Transmission Rate Test System is based on the testing principle of Coulometric oxygen sensor and infrared water vapor sensor. It is designed and manufactured according to ASTM D3985、ASTM F1249，ISO 15106-2 and other relevant standards to provide high precision and high efficiency oxygen and water vapor transmission rate tests for high and medium gas barrier materials. It is suitable for testing the oxygen and water vapor transmission performance of films, sheets and related materials in the fields of food, medicine, medical devices, daily chemicals, photovoltaic, electronic and many others.

Other Essential Tests for pharmaceutical product packaging includes Seal Integrity test, which ensures the package's seals are strong and prevent contaminants from entering; Mechanical Strength tests such as impact resistance, tear resistance and tensile strength, for the packaging must withstand transportation and handling without damage.

By conducting comprehensive testing, pharmaceutical manufacturers can select the optimal packaging materials and processes to protect drug quality and patient safety.

As the demand for functional packaging materials grows, testing methods are evolving to ensure a more comprehensive evaluation of packaging films. Labthink encourages collaboration with packaging industry companies for quality control! Visit the website www.labthink.com to learn more!

Advanced Oxygen and Water Vapour Permeation Test Instruments for High Barrier Material

The increasing demand for high barrier property materials across various industries has spurred significant research and development efforts. However, accurately testing these materials poses unique challenges.

High barrier materials exhibit extremely low gas transmission rates and require extended periods to reach equilibrium. These characteristics demand exceptional instrument performance. Key requirements include superior sealing, highly sensitive sensors, and a stable system zero. Additionally, environmental factors like temperature, humidity, and vibration can significantly impact test results.

To ensure reliable data, instrument selection is critical. For differential-pressure methods, low testing limits, high vacuum degrees, and environmental control are essential. Equal-pressure methods necessitate similar environmental controls and effective gas source handling. Weighing methods benefit from automation, while sensor methods require precise sensors and robust environmental control, especially for infrared sensors.

Labthink C130H Gas Permeability Tester is based on the differential pressure method, and is professionally applicable to the determination of gas transmission rate, solubility coefficient, diffusion coefficient and permeability coefficient of plastic films, composite films, high barrier materials, sheets, and metal foils at different temperatures. The testing process conforms to GB, ISO, ASTM and other international standards.

Labthink C406H Oxygen /Water Vapor Transmission Rate Test System is based on the testing principle of Coulometric oxygen sensor (Equal-pressure method) and infrared water vapor sensor. It is designed and manufactured according to ASTM D3985、ASTM F1249，ISO 15106-2 and other relevant standards to provide high precision and high efficiency oxygen and water vapor transmission rate tests for high and medium gas barrier materials. It is suitable for testing the oxygen and water vapor transmission performance of films, sheets and related materials in the fields of food, medicine, medical devices, daily chemicals, photovoltaic, electronic and many others.

By understanding the specific challenges of testing high barrier materials and carefully selecting instruments with appropriate features, researchers and manufacturers can achieve more accurate and reliable results.

Key considerations for testing high barrier materials include sealing, sensor precision, system zero stability, environmental control, and proper testing procedures.

As the demand for functional packaging materials grows, testing methods are evolving to ensure a more comprehensive evaluation of packaging films. Labthink encourages collaboration with packaging industry companies for quality control! Visit the website www.labthink.com to learn more!

Method and Instrument Assessing Barrier Properties of Starch-Based Biodegradable

Biodegradable plastics are gaining traction due to environmental concerns. To ensure their suitability for packaging food, pharmaceuticals, and everyday items, testing their barrier properties is crucial. These properties determine a material's ability to prevent gas or water vapor from passing through, affecting product quality and shelf life.

To evaluate the barrier properties of a full-starch biodegradable film, two standard tests can be employed:

Gas Transmission Rate (GTR): The test involves exposing the film to oxygen and measuring the amount of gas passing through over time.

Labthink C106H Gas Permeability Test System is based on the differential pressure method, and is professionally applicable to the determination of gas transmission rate, solubility coefficient, diffusion coefficient and permeability coefficient of plastic films, composite films, high barrier materials, sheets, and metal foils at different temperatures. The test system conforms to GB, ISO, ASTM and other international standards.

Water Vapor Transmission Rate (WVTR): The test involves placing a water-filled cup covered with the film in a controlled environment and measuring the weight loss due to water vapor escaping.

 

Labthink C306H Water Vapor Transmission Rate Test System is designed and manufactured based on infrared sensor method and conforms to the requirements of ASTM F1249 and ISO 15106-2. This instrument can be used to measure the water vapor transmission rate of barrier materials with high and medium moisture barrier properties with a wide testing range and high testing efficiency. C306H is applicable to determination of water vapor permeability of plastic films, sheeting, paper, packages and other relative packaging materials in food, pharmaceutical, medical apparatus, consumer goods, photovoltaic and electronic industries, etc.

The full-starch biodegradable film exhibited excellent resistance to oxygen but poor water vapor barrier properties. This suggests its potential for packaging dry products but limitations for products requiring moisture protection.

To enhance the film's overall performance, researchers propose modifications such as incorporating thermoplastic starch or nano-reinforced montmorillonite. These additions can improve barrier properties, moisture resistance, and mechanical strength while maintaining biodegradability.

Overall, testing biodegradable films is important for understanding their limitations and identify areas for improvement to expand their practical applications.


As the demand for functional packaging materials grows, testing methods are evolving to ensure a more comprehensive evaluation of packaging films. Labthink encourages collaboration with packaging industry companies for quality control! Visit the website www.labthink.com to learn more!

Coefficient of Friction (COF) Tester for Improving Equipment Lifespan and Product Quality

Friction - often overlooked, yet a potent force in manufacturing. This seemingly simple concept can significantly impact product quality, machine lifespan, and even worker safety.

Every machine, from the smallest assembly line component to the largest industrial press, encounters friction. This constant rubbing of parts generates wear and tear, gradually reducing machine efficiency. By measuring friction, manufacturers can predict when parts need replacing, preventing costly breakdowns and ensuring consistent production.

Labthink MXD-02 Coefficient of Friction Tester is designed for static and kinetic coefficient of friction tests of plastic films, sheets, rubber, paper, PP woven bags, fabric style, metal-plastic composite strips/belts for communication cable, conveyor belts, wood, coatings, brake pads, windshield wipers, shoe materials and tires. With the material smoothness testing, users can control and adjust material quality technical indexes to meet application demands. Besides, this tester is applicable to the smoothness measurement of cosmetics, eye drop and other daily chemistry.

Friction also plays a crucial role in product consistency. Imagine food packaging slipping on a conveyor belt, or medical devices not adhering properly. Accurate friction measurement helps maintain the right level of grip, ensuring products meet quality standards.

Beyond the production line, friction is a safety concern. Slippery floors or unstable packaging can lead to accidents. Friction analysis helps design safer work environments and prevent product damage during transportation.

While traditionally focused on research and development, friction measurement is becoming increasingly vital for everyday manufacturing. By understanding and controlling friction, businesses can optimize operations, reduce costs, and enhance product quality. It’s time to recognize friction as not just a physical force, but a critical factor in manufacturing success.



As the demand for functional packaging materials grows, testing methods are evolving to ensure a more comprehensive evaluation of packaging films. Labthink encourages collaboration with packaging industry companies for quality control! Visit the website www.labthink.com to learn more!

New Oxygen Permeation Tester for Packaging Materials Offers Enhanced Performance

Packaging plays a crucial role in maintaining product quality and shelf life. Oxygen permeability is a key indicator of a material's barrier properties. Labthink, a leader in packaging testing equipment, has launched the C203 Oxygen Permeation Testing Instrument.

The C203 boasts enhanced professionalism, efficiency, and intelligence. Its high-precision transmitter and Labthink's core control technology ensure accurate testing across a wide range. The instrument incorporates Labthink's new-generation, three-cell design, improving test resolution, repeatability, and temperature/humidity control.

C203H Oxygen Transmission Rate Test System is based on Coulometric oxygen analysis sensor and equal pressure test method, and is conforming to ASTM D 3985 and other standards. It provides high-precision and high-efficiency oxygen permeability tests for high and medium gas barrier materials. It is suitable for testing the oxygen permeability of thin films, sheets and related materials in the fields of food, medicine, medical devices, daily chemical, photovoltaic, electronic and other fields.

Labthink's latest operating software empowers the C203 with intelligent data processing, secure data storage, and strict user management via Labthink's DataShield. To cater to diverse needs, a six-cell model C206 is also available. Visit the product page for detailed information.

As the demand for functional packaging materials grows, testing methods are evolving to ensure a more comprehensive evaluation of packaging films. Labthink encourages collaboration with packaging industry companies for quality control! Visit the website www.labthink.com to learn more!

Water Barrier Property Test Methods for Rubber Materials

Rubber's elasticity and ability to recover from deformation make it ideal for sealing and protecting various products. However, its water barrier property, which refers to its resistance to water vapor and liquid water permeation, is crucial for its effectiveness. This report examines the test methods used to evaluate this property.

There's no single standardized test method specifically designed for water barrier property of rubber materials. Consequently, relevant methods from other materials, such as plastics, are adapted.

Desiccant method (GB/T 1037) measures the amount of water vapor permeating through a rubber sample under specific temperature, humidity, and pressure differentials. A desiccant is used to capture the permeated vapor, and the weight change is measured to calculate the Water Vapor Transmission Rate (WVTR). While relatively simple, achieving a good seal with wax and maintaining a constant high humidity can be challenging.

The ASTM E96 (Desiccant and Water Methods) standard offers two methods: desiccant and water method. The water method uses liquid water on one side of the sample to create a high humidity environment. The WVTR is calculated based on the weight change of the test dish. Notably, the two methods yield different results and should be chosen based on the application's specific environment.

 

Labthink C360H Water Vapor Transmission Rate Test System, is designed and manufactured based on the gravimetric determination method and conforms to the requirements of ASTM E96. This instrument can be used to measure the water vapor transmission rate of barrier materials with high moisture barrier properties. C360H is applicable to determination of water vapor permeability of plastic films, sheeting, paper, packages and other packaging materials in food, pharmaceutical, medical apparatus, building materials and consumer goods, etc.

Hydrostatic Pressure method (ISO 1420) focuses on liquid water barrier property. It utilizes a pressurized container to assess the sample's ability to withstand water leakage under pressure. The test determines if the material leaks or the maximum pressure it can endure before leakage.

Water barrier property testing helps ensure rubber materials meet the required specifications for sealing applications. By comparing the WVTR or hydrostatic pressure results of different rubber types, manufacturers can select the most suitable material for a specific application's moisture sensitivity. Test results can guide the development and improvement of rubber compounds with enhanced water barrier properties.

While there's no single standardized test method for water barrier property of rubber materials, adapting methods from other materials like plastics offers valuable insights. Selecting the appropriate test method (desiccant, water, or hydrostatic pressure) depends on the intended use of the rubber and the type of water barrier property being evaluated (vapor or liquid). These tests play a vital role in quality control, material selection, and product performance improvement for rubber sealing and protection applications.

As the demand for functional packaging materials grows, testing methods are evolving to ensure a more comprehensive evaluation of packaging films. Labthink encourages collaboration with packaging industry companies for quality control! Visit the website www.labthink.com to learn more!

Standardized Method Tensile Testing to Assess Material Strength

Tensile strength is a crucial property for various materials, including polymers, fibers, rubber, and metals. It reflects a material's ability to resist breaking when pulled.

Tensile testing provides a quantitative measure of a material's strength, expressed as the maximum force it can withstand before breaking. This data is essential for selecting appropriate materials for various applications. Beyond strength, tensile testing helps determine a material's elongation, which indicates its flexibility. This is particularly important for flexible plastics that may not break readily but can deform significantly under stress. By comparing the tensile strength and elongation of different materials under standardized conditions, engineers can make informed decisions during the material selection process.

Labthink C610H Auto Tensile Tester is professionally applicable to measurement of tensile, peeling, deformation, tearing, heat sealing, adhesive, puncture force, opening force, pulling force and low speed unwrapping force as well as other properties of plastic films, composite materials, soft package materials, plastic flexible tube, adhesives, adhesive tapes, label stickers, medical plasters, release paper, protective films, combined caps, aluminum foils, diaphragms, back sheets, non-woven fabrics, rubber and paper, etc.

Tensile testing is a standardized method used to determine this strength. Tensile testing machines come in various configurations, but the basic principle remains the same. A specially prepared sample of the material is secured between grips and subjected to a pulling force that gradually increases. This force and the resulting elongation (length change) of the sample are measured throughout the test.

Standardized test methods, like ASTM D638 and ISO 527, ensure consistency in testing procedures. The choice of a specific standard depends on the material type. For instance, ASTM D882 focuses on polymer films, while ASTM D412 caters to elastomers. The selection of a tensile testing machine also hinges on the material being tested. Metals require machines capable of handling high loads, while thin films might only need a low-force machine.

In conclusion, tensile testing offers a valuable tool for understanding the strength and flexibility of various materials. By employing standardized methods and appropriate testing machines, engineers can ensure the optimal selection of materials for their desired applications.

As the demand for functional packaging materials grows, testing methods are evolving to ensure a more comprehensive evaluation of packaging films. Labthink encourages collaboration with packaging industry companies for quality control! Visit the website www.labthink.com to learn more!

Testing Gas Exchange in Fresh Food Packaging

Preserving the freshness of fruits and vegetables is a continuous struggle against moisture loss, oxygen exposure, and other environmental influences. This research delves into finding the ideal packaging solution for a wide variety of produce, focusing on three commonly used films: low-density polyethylene (LDPE), polypropylene (PP), and polyvinyl chloride (PVC).

The researchers employed a scientific approach to evaluate the effectiveness of these films. Specialized instruments measured the Oxygen Transmission Rate (OTR), Carbon Dioxide Transmission Rate (CTR), and Water Vapor Transmission Rate (WVTR) of each film. These instruments assess how readily the film allows crucial gases and moisture vapor to pass through. Ideally, the packaging should enable produce to "breathe" at a controlled rate, minimizing both oxygen exposure and excessive moisture loss.

The produce samples were stored in each film type at two temperatures (5°C and 10°C). After the storage period, researchers analyzed storage life, peel color, and flesh firmness. These factors significantly impact the quality and marketability of the produce.

The tests revealed that PVC films, particularly PVC 40 (40 micrometers thick), came closest to matching the ideal gas exchange rates (OTR and CTR) required by many fruits and vegetables. However, all tested films exhibited lower WVTR than desired. This suggests that while PVC 40 might optimize gas exchange, it might also lead to in-package condensation due to insufficient moisture release.

C406H Oxygen /Water Vapor Transmission Rate Test System is based on the testing principle of Coulometric oxygen sensor and infrared water vapor sensor. It is designed and manufactured according to ASTM D3985、ASTM F1249，ISO 15106-2 and other relevant standards to provide high precision and high efficiency oxygen and water vapor transmission rate tests for high and medium gas barrier materials. It is suitable for testing the oxygen and water vapor transmission performance of films, sheets and related materials in the fields of food, medicine, medical devices, daily chemicals, photovoltaic, electronic and many others.

The benefits of these tests are extensive. Identifying the film offering the closest gas exchange rates (PVC 40) provides a strong foundation for developing modified atmosphere packaging (MAP) for various fruits and vegetables. Furthermore, the storage life analysis demonstrates the effectiveness of PVC 40 in extending shelf life (up to 25 days at 5°C). Finally, the evaluation of peel color and firmness offers valuable insights into produce quality during storage.

The study acknowledges the need for further refinement. The identified PVC film might require the incorporation of a moisture scrubber to manage condensation. This research paves the way for optimizing packaging for a wide variety of produce, leading to extended shelf life and reduced food waste.

As the demand for functional packaging materials grows, testing methods are evolving to ensure a more comprehensive evaluation of packaging films. Labthink encourages collaboration with packaging industry companies for quality control! Visit the website www.labthink.com to learn more!

Labthink helps A Packaging Manufacturer Building In-House Testing Process for Improved quality control and customer satisfaction

A leading manufacturer of flexible packaging materials faced a challenge in maintaining efficient quality control. Initially, they relied on another facility to test their packaging, which caused delays and hampered their ability to respond to issues quickly.

To ensure consistent high quality and meet growing customer demand, the company decided to establish its own packaging testing laboratory. This investment aimed to improve turnaround times for test results and enable them to identify and address production problems faster.

The company conducted thorough research to select a supplier for their testing equipment. They prioritized reliable instruments, comprehensive after-sales service, and cost-effectiveness. Ultimately, they chose Labthink known for its high-quality testing instruments.

Within a year, the company had a fully functional laboratory equipped with advanced testing equipment. This allowed them to conduct crucial tests on factors like oxygen and moisture barrier properties, heat sealability, friction coefficient, and optical transmittance.

The in-house lab significantly improved the company's quality control process. They could now dedicate more time to verification testing and address production issues promptly. For example, they used the new equipment to optimize heat seal parameters and ensure consistent seal strength, a previous customer concern.

The improved quality control resulted in a steady flow of packaging materials to various industries, including food, beverage, and pharmaceutical. Customers have expressed satisfaction with the stability of the test data generated by the new equipment.

As the demand for functional packaging materials grows, testing methods are evolving to ensure a more comprehensive evaluation of packaging films. Labthink encourages collaboration with packaging industry companies for quality control! Visit the website www.labthink.com to learn more!

Key Packaging Performance Tests for Chocolate -WVTR, OTR and Seal Strength

Maintaining chocolate quality throughout its shelf life is crucial. Inappropriate packaging can accelerate spoilage through frosting, deterioration, and insect infestation. This article explores three standardized test methods used to assess the effectiveness of chocolate packaging in preserving product integrity.

A low OTR is crucial for brownie packaging, as it minimizes oxygen-induced rancidity of nuts within the chocolate.

Oxygen Transmission Rate (OTR) Test (ASTM D3985) employs Labthink C203 Oxygen Transmission Rate Test System. The instrument separates a test chamber into two sections. Oxygen flows into one side, while an inert carrier gas (nitrogen) flows in the other. The film sample separates these chambers. Any oxygen permeating the film reacts with a coulometric sensor on the nitrogen side, generating a voltage proportional to the oxygen content. This voltage is then used to calculate the OTR, indicating the film's resistance to oxygen ingress.

A low WVTR is essential for all chocolates, as it prevents moisture ingress that can lead to frosting and deterioration. This test is particularly important for chocolates destined for high-humidity regions.

Water Vapor Transmission Rate (WVTR) Test (ISO 15106-3) utilizes Labthink C303 Water Vapor Transmission Rate Test System. The sample is placed in a chamber with controlled humidity on one side and dry nitrogen on the other. Water vapor migrates through the sample due to the humidity difference. The dry nitrogen carries the permeated vapor to a sensor, and the resulting signal is used to calculate the WVTR.

A strong seal prevents insect infestation, a major concern for chocolate quality. Seal Performance Test (ASTM D3078) employs Labthink C660B Leak Tester and utilizes the bubble emission method. The tester pressurizes a sealed package sample with a controlled negative pressure. If a leak exists, air from the environment will be drawn into the package through the leak, forming bubbles detectable by the instrument. The pressure at which leakage occurs indicates the seal's integrity.

These standardized test methods, coupled with their respective instruments, offer chocolate manufacturers a reliable means to evaluate packaging performance. By incorporating these tests into their quality control procedures, manufacturers can select packaging materials that effectively protect their products throughout the supply chain, ensuring consumer satisfaction and brand reputation.

Ensuring Edible Oil Quality through Packaging Testing- Evaporation Residue Test,Oxygen Transmission Rate (OTR) Test and Seal Performance Test

Packaging testing plays a critical role in maintaining edible oil quality and safety. Various tests and instruments can be used to evaluate the suitability of packaging materials for preventing oil degradation and contamination.

Recent food safety concerns surrounding edible oils highlight the need for robust packaging solutions. This report focuses on the significance of testing methods and instruments employed to assess the effectiveness of packaging materials in safeguarding edible oil integrity.

Three crucial tests are employed to evaluate packaging performance:

Evaporation Residue Test: This test identifies the potential migration of harmful chemicals from the packaging material into the oil during storage. It plays a vital role in ensuring consumer safety by detecting the presence of substances that may leach from the packaging and contaminate the oil.

Labthink ERT-01 Evaporation Residue Constant Weight Tester is an automated instrument known for its high accuracy (0.3mg) and controlled temperature testing environment (100-130°C). This minimizes potential inaccuracies associated with manual operation and cooling processes.

Oxygen Transmission Rate (OTR) Test: This test measures the packaging's ability to impede oxygen ingress. Oxygen is a primary factor in oil oxidation, which leads to quality deterioration and potential health risks. By measuring the OTR, manufacturers can ensure the packaging provides an adequate barrier against oxygen permeation.

ASTM F1307-2014 (US) serves as a reference standard for conducting the OTR test. Labthink C230 Oxygen Transmission Rate Test System is employed for this test. This test measures the rate at which oxygen permeates through the packaging material under controlled conditions. Different gas concentrations are maintained on either side of the packaging sample, and the instrument detects the oxygen flow rate passing through the material. This provides valuable data on the packaging's ability to restrict oxygen exposure to the oil.

Seal Performance Test: Leakage in packaging can compromise oil safety by allowing oxygen or contaminants to enter the container. This test detects even microscopic leaks, ensuring the package forms a complete and secure barrier.

Labthink C660B Leak Tester is a specialized instrument used for this test. The packaging sample is placed inside a vacuum chamber where a negative pressure is applied. The instrument then detects any leaks by identifying air bubbles escaping from the pressurized package. This method helps identify even minute breaches in the seal, ensuring the packaging maintains a complete and secure barrier.

By implementing these tests and instruments, manufacturers can select suitable packaging materials that safeguard edible oil quality and safety. These tests provide valuable insights into the effectiveness of packaging in preventing oil degradation and contamination, ultimately contributing to consumer health and well-being.

As the demand for functional packaging materials grows, testing methods are evolving to ensure a more comprehensive evaluation of packaging films. Labthink encourages collaboration with packaging industry companies for quality control! Visit the website www.labthink.com to learn more!

Evaluating Oxygen Barrier Properties of Plastic Cups Ensuring Food Shelf life

Pudding cups are commonly used for packaging pudding products due to their ability to maintain shape and ease of transport. However, oxygen exposure can negatively impact puddings by causing nutrient loss, flavor deterioration, and spoilage. Therefore, pudding cup materials require good oxygen barrier properties.

This report describes the oxygen transmission rate (OTR) testing of a plastic pudding cup using the coulometric method according to ASTM F1307-02, Standard Test Method for Oxygen Transmission Rate through Dry Packages Using a Coulometric Sensor.

The test was performed under the condition of (10 ± 0.2)℃ Temperature and 0% RH, (5 ± 1)% RH – (90 ± 1)% RH, 100% RH humidity. The testing instrument was Labthink C230H Oxygen Transmission Rate Test System

C230H utilizes the coulometric method, where oxygen permeates through the clamped specimen from a high-concentration side to a low-concentration (nitrogen) side. A coulometric sensor detects the increasing oxygen concentration, allowing the system to calculate the OTR.

The tested pudding cup exhibited an OTR of 0.56315 cm³/package/day. Lower OTR values indicate better oxygen barrier properties. The specific OTR requirement for pudding cups depends on factors like desired shelf life and product ingredients.

OTR testing is crucial for ensuring the effectiveness of pudding cup packaging in maintaining product quality. This report demonstrates the coulometric method for OTR measurement using the Labthink C230H system.


As the demand for functional packaging materials grows, testing methods are evolving to ensure a more comprehensive evaluation of packaging films. Labthink encourages collaboration with packaging industry companies for quality control! Visit the website www.labthink.com to learn more!

Test for Collector-Active Material Bonding Strength in Lithium-Ion Electrodes Ensuring Battery Performance

Lithium-ion batteries are ubiquitous in portable electronics and are increasingly being explored for electric vehicles and large-scale energy storage. While the overall function of these batteries is well understood, the internal structure and its impact on performance are less familiar. This report focuses on a critical aspect of electrode design: the bonding strength between the current collector and the active material.

A lithium-ion battery electrode consists of a current collector (aluminum for the positive electrode and copper for the negative) coated with a layer containing the active material and a binder. During charge and discharge cycles, lithium ions move between the electrodes. This process can cause the active material to expand and contract, potentially leading to separation from the current collector. Weak bonding at this interface increases electrical resistance and reduces battery lifespan. Therefore, ensuring a strong bond between the collector and active material is essential for optimal battery performance.

Methods for evaluating the bonding strength between the collector and active material in a lithium-ion battery electrode include utilizing a standard tensile tester to carry out a peel test. In this study, a Labthink C610H Tensile Tester was used.

First prepare a sample, a rectangular electrode strip (1.9 cm wide) is secured to a stainless-steel plate using double-sided adhesive tape. One end of the electrode strip is peeled from the steel plate. The peeled end and the opposite end are clamped into the upper and lower grips of the tensile tester, respectively. The test is automated and performed at a constant peel rate of 10 mm/minute. The force required to separate the collector and active material is continuously measured. Upon test completion, the instrument automatically displays the force data, which can be used to assess the bonding strength between the two materials.

The peel test described here simulates the shear stress experienced by the collector-active material interface during battery operation. The force data obtained reflects the strength of the bond between these two components. A higher force indicates a stronger bond, signifying better resistance to delamination and improved battery performance.

A peel test utilizing a tensile tester is a straightforward and effective method for evaluating the bonding strength between the current collector and active material in lithium-ion battery electrodes. The peel test provides valuable insights into the mechanical integrity of the electrode structure, aiding in the development of batteries with longer lifespans and improved performance.


As the demand for functional packaging materials grows, testing methods are evolving to ensure a more comprehensive evaluation of packaging films. Labthink encourages collaboration with packaging industry companies for quality control! Visit the website www.labthink.com to learn more!

Comparative Analysis of Aluminum-Coated VMPET and VMBOPP Oxygen Transmission Properties

Aluminum-coated films offer a cost-effective alternative to pure aluminum foil for packaging applications requiring good barrier properties. However, the effectiveness of these films can vary depending on the substrate material used. This study investigates the Oxygen Transmission Rate (OTR) of VMPET (vapor-deposited aluminum on PET) and VMBOPP (vapor-deposited aluminum on BOPP) to assess the influence of the substrate on barrier performance.

The OTR test employed the coulometric method (equal pressure) following the standard ASTM D3985. This method utilizes a controlled environment chamber to measure the rate of oxygen permeation through the film sample.

Labthink C230H Oxygen Transmission Rate Test System was used for this study. This instrument is designed and manufactured based on the coulometric sensor method (aka. equal pressure method) and conforms to ASTM D3985. This instrument can be used to measure the oxygen transmission rate of barrier materials with high and medium barrier properties with high accuracy and high efficiency.

Three specimens were cut from each VMBOPP and VMPET sample material using a sample cutter. These specimens were then clamped into the designated test cells of the C230G instrument. The test parameters, including specimen name, temperature, and humidity, were programmed, and the test was initiated. Upon completion, the instrument automatically generated the OTR results for each specimen.

The OTR test results for the VMBOPP specimens exhibited a variation, with individual values of 50.0341 cm3/(m²∙day), 51.4492 cm3/(m²∙day), and 58.8713 cm3/(m²∙day). The average OTR for VMBOPP was calculated to be 53.4515 cm3/(m²∙day). Conversely, the VMPET specimens displayed significantly lower and more consistent OTR values. The individual results for VMPET were 1.0287 cm3/(m²∙day), 0.9347 cm3/(m²∙day), and 1.0973 cm3/(m²∙day), with an average OTR of 1.0202 cm3/(m²∙day).

The OTR test results clearly demonstrate that VMPET possesses superior barrier properties compared to VMBOPP. This can be attributed to the inherent better barrier properties of PET film compared to BOPP film. The C230G instrument proved to be a reliable and user-friendly tool for evaluating the OTR of packaging films. Its automated features, precise control of test conditions, and accurate data acquisition make it suitable for various quality control applications.

As the demand for functional packaging materials grows, testing methods are evolving to ensure a more comprehensive evaluation of packaging films. Labthink encourages collaboration with packaging industry companies for quality control! Visit the website www.labthink.com to learn more!

A Comparative Analysis of Moisture Permeability of Sanitary Towel Substrate Materials

In this article we will introduce the testing of water vapor transmission rate (WVTR) for two sanitary towel substrate materials according to ASTM E96 standards. The cup method was employed using a C360M Water Vapor Transmission Rate Test System. The test results indicate significant differences in moisture permeability between the two samples, impacting factors like breathability and comfort.

Sanitary towel manufacturers prioritize consumer comfort and fluid management. Key factors influencing comfort include absorbency, leak prevention, breathability, and quick-drying properties. These characteristics are directly related to the materials used in the sanitary towel's different layers.

This test focuses on the moisture permeability of sanitary towel substrate materials, a critical factor for breathability and comfort. The cup method, following ASTM E96 standards, was used to determine the WVTR of two samples.

The test used substrate materials from two sanitary towel manufacturers, and was performed according to ASTM E96 - Standard Test Methods for Water Vapor Transmission of Materials (Cup Method). The testing Instrument was Labthink C360M Water Vapor Transmission Rate Test System.

The average WVTR for the two samples were: sample 1: 601.4813 g/(m²·24h), sample 2: 1384.0073 g/(m²·24h)

The test results demonstrate a significant difference in moisture permeability between the two sanitary towel substrate materials. This variation directly impacts the breathability of the final product, influencing user comfort. The C360M Water Vapor Transmission Rate Test System proved efficient, allowing for simultaneous testing of multiple samples and providing reliable data.

Labthink C360M Water Vapor Transmission Rate Test System is applicable to a broad range of materials beyond sanitary towel substrates. Here are some examples:

• ž Films: Plastic films, paper-plastic composites, geomembranes, co-extruded films, waterproof breathable films, aluminum-coated films, aluminum foil, and aluminum plastic composite films.
• ž Sheeting: Various engineering plastics, rubber, building materials, and insulation materials (e.g., PP, PVC, PVDC, and nylon sheeting).
• ž Other Materials: Building materials, aseptic wound protection films, medical plasters, textiles, non-woven fabrics, paper, and paperboard.

This test method offers a valuable tool for manufacturers across various industries to assess the moisture permeability of their products.

As the demand for functional packaging materials grows, testing methods are evolving to ensure a more comprehensive evaluation of packaging films. Labthink encourages collaboration with packaging industry companies for quality control! Visit the website www.labthink.com to learn more!

Measuring thickness for Optimizing Oxygen Barrier Performance in Packaging

PET layer plays an important role in oxygen barrier performance for the tested materials. To investigates the influence of film thickness on oxygen permeability in packaging materials, we tested three composite film specimens with different PET (polyethylene terephthalate) and PE (polyethylene) layer thicknesses.

The test adopted a differential pressure method according to ASTM D1434, test instrument was Labthink VAC-V2 Gas Permeability Tester. We prepared specimens in different thickness, PET(12μm)/PE(45μm), PET(12μm)/PE(60μm) and PET(25μm)/PE(45μm). The instrument measures the Oxygen Transmission Rate (OTR), which signifies the amount of oxygen permeating through a film per unit area under specific conditions.

The test result shows that OTR decreased with increasing thickness for both PET and PE layers. Thicker PET layer (Specimen #3) resulted in a more significant OTR reduction compared to a thicker PE layer (Specimen #2).

PET layer plays a dominant role in oxygen barrier performance for the tested materials. Increasing PET thickness offers a more efficient way to improve oxygen permeability compared to increasing PE thickness.

As the demand for functional packaging materials grows, testing methods are evolving to ensure a more comprehensive evaluation of packaging films. Labthink encourages collaboration with packaging industry companies for quality control! Visit the website www.labthink.com to learn more!

Sealant WVTR Evaluation Enhancing Moisture Protection of Outdoor Electrical Equipment

Moisture-proof sealants are increasingly used to protect outdoor electrical equipment from moisture ingress. However, standardized methods to quantify their moisture resistance are lacking. This report proposes a test method based on ASTM E96 to evaluate the moisture barrier properties of moisture-proof sealants.

Moisture poses a significant threat to the safe operation of outdoor electrical equipment. It can lead to electrical shorts, metal corrosion, and equipment failure. Moisture-proof sealants are applied to seal gaps and prevent moisture ingress. While these sealants are becoming more common, there is a lack of standardized methods to assess their effectiveness.

The proposed test measures the water vapor transmission rate (WVTR) of the sealant sample. WVTR indicates the rate at which water vapor permeates through a material. A lower WVTR signifies a higher moisture barrier property. By measuring the WVTR of a sealant sample, this test provides an objective evaluation of its ability to resist moisture ingress.

The test method follows the cup method outlined in ASTM E96. This gravimetric method measures the mass change of a sealed cup containing the sealant sample over time. The cup is placed in a controlled environment with a high relative humidity on one side and a desiccant on the other side. Water vapor migrates through the sample from the high humidity side to the dry side. The cup's weight is periodically measured, and the WVTR is calculated based on the weight change and the test duration.

The Labthink C360H Water Vapor Transmission Rate Test System is used in this test method. This instrument provides a controlled environment for the test cup and automates the measurement process. It ensures consistent testing conditions and accurate data collection.

This test method provides a standardized approach to evaluate the moisture resistance of moisture-proof sealants. The WVTR measurement offers an objective and quantitative assessment of the sealant's performance. By understanding the WVTR of a sealant, engineers can better predict its effectiveness in real-world applications and improve the overall moisture protection of outdoor electrical equipment.

The proposed test method based on ASTM E96 offers a valuable tool for evaluating the moisture resistance of moisture-proof sealants used in outdoor electrical equipment. The WVTR measurement provides an objective and quantitative assessment of the sealant's ability to resist moisture ingress, leading to more informed decisions regarding material selection and improved moisture protection strategies for critical electrical infrastructure.

As the demand for functional packaging materials grows, testing methods are evolving to ensure a more comprehensive evaluation of packaging films. Labthink encourages collaboration with packaging industry companies for quality control! Visit the website www.labthink.com to learn more!