Introduction: The Need for Reliable Packaging Testing Instruments

Whether it’s for flexible packaging, automotive materials, or textiles, reliable testing services are essential in determining how materials will perform in real-world applications. Labthink’s packaging testing instruments are trusted by leading companies to maintain product integrity, improve material design, and meet the evolving demands of global markets.

Labthink’s TQD-G1A Air Permeability Tester: Revolutionizing Material Testing

One of Labthink’s flagship products, the TQD-G1A Air Permeability Tester, has been instrumental in enhancing the accuracy and efficiency of material testing. This cutting-edge instrument provides two testing methods—constant pressure difference and constant flow—to accurately measure the air permeability and air resistance of materials such as polyurethane foam, PVC, leather, textiles, and nonwoven fabrics.

The TQD-G1A features high-precision electronic sensors for airflow and pressure, ensuring reliable and consistent results. It also comes equipped with a maintenance-free vacuum pump system for enhanced airflow stability, making it ideal for testing a wide range of materials. These features enable businesses to evaluate the performance of materials, particularly those used in automotive interiors, packaging, and other high-demand applications, ensuring they meet the necessary standards for durability and functionality.

The Role of Labthink’s Testing Services in Quality Control

Labthink’s testing services go beyond just providing the tools for measurement; they are part of a larger commitment to helping businesses achieve superior quality control. Labthink’s packaging testing instruments, such as the TQD-G1A Air Permeability Tester, ensure that materials are tested under real-world conditions, providing data that manufacturers can trust.

For companies involved in industries such as automotive manufacturing or flexible packaging, the importance of consistent, reliable testing cannot be overstated. Labthink’s instruments allow businesses to maintain high-quality standards, ensuring that materials used in products like automotive upholstery or food packaging meet rigorous performance criteria. These tools also enable businesses to make data-driven decisions, reducing waste, improving material selection, and ultimately delivering products that outperform competitors in terms of both durability and quality.

Conclusion: Trust Labthink for Your Testing Service Needs

With the ever-increasing demand for high-performance materials in industries ranging from automotive to packaging, Labthink remains a trusted partner for businesses seeking reliable testing services. Our packaging testing instruments, including the  Air Permeability Tester, are designed to deliver precise, actionable results, ensuring that materials meet industry standards and provide lasting performance. Whether you’re testing air permeability or evaluating material integrity, Labthink’s testing services give you the tools you need to stay ahead of the competition.

The Importance of Gas Permeation Tests for Material Performance

Gas permeation tests are essential for evaluating the ability of materials, such as plastic films, composite materials, and metal foils, to resist gas transmission. In industries where barrier properties directly affect product quality and safety—such as in packaging and pharmaceutical applications—these tests are vital. For example, packaging materials must prevent the ingress of oxygen or moisture, which can compromise the contents’ shelf life. Through our gas permeation tests, Labthink helps businesses achieve the highest standards of gas barrier performance, adhering to international standards like ASTM to ensure accuracy and reliability.

Precision Engineering in the C130H Gas Permeability Tester

At the heart of Labthink’s gas permeation testing solutions is the C130H Gas Permeability Tester, a tool engineered for precision and ease of use. This state-of-the-art instrument employs a differential pressure method to measure gas transmission rates and other critical properties such as permeability coefficient and diffusion coefficient. With 360° circulation constant temperature technology, the C130H ensures temperature stability within 0.05°C, which is crucial for maintaining the accuracy of ASTM gas permeability tests.

Additionally, Labthink’s innovative pressure compensation techniques ensure that differential pressure remains stable, providing more consistent and reliable test results. The automatic operation feature allows for one-button testing, minimizing human error and improving testing efficiency. With these advancements, the C130H Gas Permeability Tester offers businesses a powerful tool for high-precision gas barrier testing.

Tailored Solutions for High and Low Barrier Materials

Labthink offers flexible solutions for testing both high and low barrier materials, meeting the unique needs of a variety of industries. Our gas barrier tester is capable of testing materials with different levels of gas resistance, including low barrier plastics and high barrier materials like metal foils.

For more specialized testing, the C130H Gas Permeability Tester also accommodates the testing of toxic, explosive, and mixed gases, with customization options available to meet specific industry requirements. This versatility ensures that businesses can test a wide range of materials and gases, providing accurate data for everything from food packaging to pharmaceutical applications.

Conclusion: Labthink’s Commitment to Quality and Innovation

Labthink offers innovative, reliable, and customizable gas permeability testing solutions that businesses can count on to meet their unique material performance needs. From the advanced capabilities of the C130H Gas Permeability Tester to our ability to accommodate a variety of gases and materials, we provide accurate, actionable data to optimize your products. With our ASTM gas permeability tests, we ensure that your materials perform consistently, regardless of the environmental conditions. Trust Labthink to be your partner in achieving the highest levels of material integrity, efficiency, and safety in every application.

Labthink’s Testing Services for Flexible Packaging

Labthink’s is dedicated to providing cutting-edge testing instruments for flexible packaging materials. This range of testing services covers a wide array of tests, including tensile strength, elongation, and barrier properties, all essential for ensuring the reliability and performance of flexible packaging.

For industries that rely on flexible materials, such as food packaging, pharmaceuticals, and consumer goods, these testing capabilities are critical in assessing the integrity of packaging. Whether it’s measuring the durability of a food pouch or ensuring the resistance of a pharmaceutical blister pack, Labthink’s instruments deliver precise and repeatable results that help businesses optimize their products for maximum performance and compliance with international standards.

The Role of Labthink’s Permeability Tester in Ensuring Packaging Integrity

A key component of Labthink’s testing services is the Permeability Tester, which plays an essential role in evaluating the barrier properties of packaging materials. This testing instrument measures the permeability of gases, moisture, and other elements through flexible materials. For industries like food and pharmaceuticals, ensuring minimal permeability is critical to maintaining the safety and longevity of their products.

By using Labthink’s Permeability Tester, companies can determine how well their packaging materials protect products from external environmental factors. This ensures that food stays fresh, medicines retain their efficacy, and products remain protected throughout their shelf life. As a result, businesses gain valuable insights into packaging performance, enabling them to make data-driven decisions that enhance product quality and minimize waste.

Why Labthink’s Testing Services Are Essential for Quality Control

Labthink’s testing services go beyond just providing equipment; they offer complete solutions that ensure products meet the highest standards of quality, safety, and sustainability. With an extensive range of testing instruments and services, including the Permeability Tester, Labthink has helped countless businesses optimize their packaging and other products to meet ever-evolving consumer demands and regulatory requirements.

Conclusion

By partnering with Labthink, companies can take advantage of the latest technologies and industry expertise to achieve superior results and maintain a competitive edge in the marketplace.

Gas Permeation Measurement Principle

The fundamental principle involves creating a controlled gas pressure differential across a test specimen. The specimen is mounted to form a sealed barrier between two chambers: a high-pressure upstream side and a low-pressure downstream side. The test gas is introduced to the upstream side at a specific pressure and temperature. As gas molecules permeate through the material, they accumulate in the downstream chamber, causing a measurable increase in pressure. By monitoring this pressure rise over time until it reaches a steady-state, the instrument calculates the specific Gas Transmission Rate (GTR). This method allows for the precise quantification of a material’s barrier properties under standardized conditions, providing critical data for industries like packaging and pharmaceuticals where gas ingress or egress must be controlled.

Gas Transport Mechanism Analysis

Gas transport through non-porous polymers primarily occurs via a solution-diffusion mechanism. This process involves three stages: adsorption, diffusion, and desorption. Gas molecules first dissolve into the polymer matrix on the high-pressure surface. They then diffuse through the material driven by the concentration gradient, moving randomly through intermolecular spaces. Finally, the molecules desorb from the low-pressure surface. The rate of this process depends on factors like gas molecule size, polymer chain mobility, and intermolecular forces. Understanding this mechanism is key to interpreting permeability data, as explained by resources from Labthink. This analysis helps in developing materials with tailored barrier properties for specific applications.

Permeability Coefficient Determination Method

The permeability coefficient is a fundamental material property calculated from the measured gas transmission rate. It is a product of the solubility and diffusion coefficients, representing the volume of gas that permeates per unit time, through a unit area of material, under a unit pressure differential. After the steady-state gas flow is established, data on the transmission rate, material thickness, and applied pressure difference are collected. These values are inserted into a standardized formula to compute the permeability coefficient. This intrinsic property allows for the direct comparison of barrier performance between different materials, independent of sample thickness, which is vital for material selection and development in research and industrial applications.

Conclusion

We at Labthink manufacture a series of Gas Permeability Testers. These instruments measure the gas transmission rate, often using the differential pressure method, and the oxygen transmission rate using the coulometric sensor method. Our product line includes models for testing common, toxic, flammable, or explosive gases, as well as specialized testers for materials like lithium-ion battery separators. Several of our models support ASTM gas permeability testing standards, providing reliable data for your quality assurance. For detailed specifications on our gas permeability analyzer, we invite you to explore our technical resources.

Material Gas Barrier Measurement

The gas permeability test is a standardized laboratory procedure used to quantify how easily a gas, such as oxygen, carbon dioxide, or nitrogen, can pass through a solid material. This measurement is critical for evaluating the barrier properties of materials used in food packaging, pharmaceutical blister packs, and industrial applications. The test determines the Gas Transmission Rate (GTR), which indicates the volume of gas permeating through a unit area of the material over a specific time under set conditions of pressure and temperature. A lower GTR signifies a better barrier, which is essential for protecting sensitive products from degradation. The procedure is typically performed using specialized equipment known as a gas permeability tester, which creates a controlled environment to ensure accurate and repeatable results. This data is indispensable for manufacturers who need to guarantee their packaging will perform as expected throughout the product’s distribution and shelf life.

Gas Transmission Rate Analysis

Gas Transmission Rate (GTR) analysis provides the specific quantitative data resulting from a gas permeability test. It is expressed as the volume of gas that permeates through a unit area of the material per day under a specified pressure differential. This rate is the fundamental metric for comparing the barrier performance of different materials or different batches of the same material. Accurate GTR analysis helps in predicting the shelf life of packaged goods, optimizing packaging thickness, and ensuring compliance with industry standards. The analysis process involves precise control of temperature, humidity, and gas pressure on both sides of the test specimen. We at Labthink provide the instruments and methodologies required for this critical analysis. By understanding the GTR, manufacturers can make evidence-based decisions to improve their products’ quality and safety, ultimately reducing waste and enhancing consumer satisfaction.

Permeation Testing Method Details

Permeation testing involves detailed methodologies to measure gas flow through a material. The most common methods are the differential-pressure method (or manometric method) and the coulometric method (for oxygen transmission rate test). In the differential-pressure method, the test gas is introduced at a higher pressure on one side of the sample, and the pressure increase on the low-pressure side is measured to calculate the transmission rate. The coulometric method, often using a coulometric sensor, measures the oxygen molecules have permeated through the material and reached the sensor. The test sample is mounted as a sealed barrier separating two chambers, and the entire apparatus form a temperature-controlled environment to ensure consistency. The process requires meticulous preparation, including conditioning the sample and calibrating the instrument, to eliminate variables that could affect the result. This rigorous approach ensures that the obtained permeability is a reliable intrinsic property of the material being tested.

Conclusion

We manufacture a series of Gas Permeability Testers that measure the gas transmission rate of materials. Our instruments use methods such as the differential-pressure method and the coulometric sensor method. The testers are designed for various gases, including common, toxic, flammable, or explosive ones, and support ASTM testing standards. Specific models include the VAC-V1 (EX), VAC-V2 (EX), and the C206H Oxygen Transmission Rate Test System, which you can learn more about through our gas permeability analyzer resources.

Aluminum coated film is popular for instant noodle packaging because it’s affordable and protects from light. But its effectiveness can vary depending on how it’s made. Here, researchers compared the oxygen barrier properties of three different films from various manufacturers.

The study adopted a manometric method to measures how much oxygen can pass through the film over time. The test instrument is Labthink C230H Oxygen Transmission Rate Tester.

The results showed a big difference between the films. Some let a lot of oxygen through (over 41 cm3/(m2·day)), while others were much better at blocking it (as low as 1.6 cm3/(m2·day)). This difference likely comes down to variations in the aluminum layer’s thickness and density. The study concludes that not all aluminum coated film is created equal. To ensure the quality of their noodles, manufacturers should test their packaging materials carefully. Choosing a film with a low oxygen permeability will help keep instant noodles fresh for longer.

More gas transmission rates testers adopting various test method are available from Labthink, please visit the website www.labthink.com to learn more! Labthink

]]> http://www.gas-transmission-rate.com/barrier-properties-study-of-aluminized-composite-film-for-instant-noodle-packaging.html/feed 0 http://www.gas-transmission-rate.com/challenges-in-testing-oxygen-permeability-of-bottles.html http://www.gas-transmission-rate.com/challenges-in-testing-oxygen-permeability-of-bottles.html#comments Wed, 08 Jan 2025 07:03:08 +0000 admin http://www.gas-transmission-rate.com/?p=239 Traditional Testing has many Limitations. For example, film-based testing doesn’t reflect actual bottle properties due to manufacturing variations. Packages come in various shapes and sizes, making testing difficult. Laboratory temperature needs to be strictly controlled.

ASTM F1307-02 standard for oxygen transmission rate states an alternative test method using a coulometric sensor. This method involves exposing the outside of a package to a known oxygen concentration while purging the inside with nitrogen. By applying different sealing methods, various types of package can be tested (bottles, pouches, etc.).

Labthink C230H Oxygen Transmission Rate Tester is designed and manufactured based on the coulometric sensor method. This instrument offers dual testing capabilities for films and packages. The unique fixing structure allows for strong sealing around container openings.

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 https://en.labthink.com to learn more!

Key words: milk powder, milk powder packaging, oxygen permeability, oxygen transmission rate, water vapor permeability, water vapor transmission rate

In the process of long-distance transportation of milk powder, it is not uncommon for enterprises to lose customer trust and market due to the brown change of products and excessive flora by the permeation of oxygen and water molecules. Packaging quality testing plays a decisive role in the quality control of milk powder and the competitiveness of enterprises. Reasonable packaging can ensure the relative stability of the nutrition and tissue state of milk powder. The fat in milk powder is easy to deteriorate because of oxidation reaction. There are many factors leading to oxidation, such as heat, light, metal ions, etc. The packaging with good barrier can prevent moisture absorption or moisture evaporation of milk powder, but also cut off the pollution of foreign substances, and effectively delay and eliminate this reaction.

Labthink VAC-V2 Differential Pressure Gas Permeability Tester and C360M Water Vapor Permeability Test System independently developed and produced by Labthink, can be professionally suitable for testing the barrier performance (oxygen transmission rate, nitrogen transmission rate, water vapor transmission rate) of milk powder packaging materials, and help milk powder manufacturers to monitor the packaging quality of products.

Labthink VAC-V2 Differential Pressure Gas Permeability Tester, based on the test principle of differential pressure method, is a professional gas transmission rate tester for film samples, and is suitable for the determination of gas transmission rate, solubility coefficient, diffusion coefficient and permeability coefficient of plastic film, composite film, high barrier materials, sheet and metal foil at various temperatures.

VAC-V2 Gas Permeability Tester

The test principle is as follows: the prepared sample is placed between the upper and lower test chambers and clamp firmly. First, vacuum the low pressure chamber (lower chamber), then vacuum the whole system when the specified vacuum is reached. Then, close the lower test chamber, fill the test gas of certain pressure into the high pressure chamber (upper chamber), and ensure that on both sides of the sample form a constant pressure difference (adjustable). Thus, the gas in the pressure gradient will flow from high pressure side to low pressure side. Through monitoring and processing, the instrument can obtain the barrier parameters of the test sample.

C360M Water Vapor Transmission Rate Test System is based on the test principle of weighing method for water vapor permeability testing, and is designed and manufactured according to ASTM E96, GB 1037 to provide wide range and high efficiency water vapor transmission rate detection for low, medium and high water vapor barrier materials. It is suitable for testing, water vapor transmission performance of film, sheet, paper, textiles, non-woven fabrics and related materials in food, pharmaceutical, medical equipment, daily chemistry and other fields.

C360M Water Vapor Transmission Rate Test System

The test principle is: to place water or desiccant in the pre-treated test cup, and then clamp the pre-treated sample on the test cup. The test cup is placed in the test cabinet. The test cabinet generates a stable temperature, humidity and airflow purging environment according to the set test conditions. Water vapor enters the dry side through the sample, and determines the change of the overall weight of the test cup over time.

Besides ensuring that the barrier performance of milk powder packaging, manufacturers also need to detect and control some other performance parameters of the packaging, such as the heat sealing quality, the overall sealing performance, the residual solvent of the packaging materials, so as to ensure the quality of products. For more details, please Click to Labthink or email to info@labthink.com for consultation. Labthink is looking forward to enhancing technical exchanges and cooperation with enterprises and institutions in the industry.

1, Flexible Packaging Performance Testing for Oxygen Permeability, Water Vapor Permeability, Solvent Residue, Oxygen Residual, etc.

The deterioration of food is mainly caused by microbial contamination and oxidation deterioration. Therefore, in addition to the quality problems of food itself, the oxygen and moisture permeability of packaging materials would directly affect the shelf life of food. Labthink VAC-V2 Differential Pressure Gas Permeability Tester and W3/062 Water Vapor Permeability Tester independently developed and produced by Labthink, realize high precision automatic testing through powerful software functions, and meet the quality control requirements of the industry for these two testing items, i.e., OTR and WVTR. Both instruments use the international top core components to ensure the test accuracy, and users can complete the monitoring of oxygen transmission and humidity transmission parameters without purchasing expensive instruments.

In addition, Labthink C650H Headspace Analyzer, with its professional sampler, can effectively solve the packaging headspace and residual oxygen analysis issues, and is suitable for the determination of oxygen, carbon dioxide gas content, mixing ratio in the sealed package. The instrument is suitable for rapid and accurate evaluation of the content and proportion of gas ingredients in production lines, laboratories and other occasions, guiding the production and ensuring the shelf life of products. The application scope includes food packaging, milk powder packaging, bread, meat packaging, etc., which is welcomed by the industry with high efficiency, high precision and high service life.

2, Mechanical Testing of Flexible Packaging

Labthink XLW Auto Tensile Tester automatically tests with computer. Its LCD screen displays menu interface. The operator only needs to choose the corresponding test item, and the instrument will automatically complete tensile force, elongation, heat sealing strength, tearing strength, peeling strength, elastic modulus, constant extension stress and other detection of materials. The software has powerful analysis function, which can be used for secondary analysis and superposition comparison. In addition, with the professionally designed fixture, this powerful tensile tester can also detect the packaging cover tearing force of jelly cups, instant noodle packaging boxes, puncture resistance and other products.

3, Sealing Performance Testing of Flexible Packaging

Poor sealing performance is the main cause of packaging leakage and pollution, and the sealing performance has a great impact on food safety, and is an important index of packaging testing. Labthink C660B Leak Tester uses vacuum principle, that is, under the national-required pressure to maintain for the predetermined time, visually observe if the test process occurs leakage, and then determine the rationality of packaging sealing process.

4, Thickness Testing for Flexible Packaging Material

The core factor why flexible packaging film material replaces glass or metal packaging materials is that it can achieve high barrier performance almost similar to glass or metal packaging, and at the same time has the advantages of light weight that glass or metal packaging does not have. In order to ensure the uniformity and stability of film materials, strict quality control of their thickness is required. Micrometer or point contact type thickness meter is far from meeting the food industry requirements for the thickness measurement of packaging materials. According to GB/T 6672 and corresponding international standards, measurement must be conducted by mechanical surface contact measurement. At present, domestic product that can meet the requirements is Labthink C640 Thickness Tester. The tester uses mechanical contact measurement principle, using high precision of displacement sensor, scientific structure layout and professional control technology, to ensure that 0.1um high resolution, automatic sample feeding system function, all of which fully meet the customer needs for their high precision and high efficiency test requirements.

Of course, besides ensuring that the food packaging barrier property, sealing, thickness and other indexes, it is necessary to monitor some other parameters such as color fastness, packaging material impact resistance, to ensure the quality of products during shelf life. For more information about testing instruments, please log on the website of Labthink, www.labthink.com, to view the specific information, or call 0531-85068566 to consult us. Labthink is willing to take this opportunity to enhance communication and cooperation with you.

Most bicycle tires, many motorcycle tires, and many tires for large vehicles such as buses, heavy trucks, and tractors are designed for use with inner tubes. Inner tubes are torus-shaped balloons made from an impermeable material, such as soft, elastic synthetic rubber, to prevent air leakage. The inner tubes are inserted into the tire and inflated to retain air pressure.

Generally speaking, the inner tubes should be of low air permeability so that the air pressure inside can be maintained properly and the tire can keep stable in shape and performance. This article provides a simplified testing procedure for air permeability test of the inner tubes for automotive tires for your reference.

The testing instrument we used is Labthink’s C130H Gas Permeability Tester which adopts differential pressure method. In the tests, the specimen is mounted in a gas transmission cell so as to form a sealed semi-barrier between two chambers. One chamber contains the test gas at a specific high pressure, receives the permeating gas. The gas transmission rate of the test gas can be calculated according to the pressure change of the lower pressure chamber.

The specimens we tested are inner tubes made from butyl rubber, a kind of material that is low in air permeability. Before tests, certain number of specimens should be selected. The specimens should be flat and free of scratches, pinholes or other defects.

When all specimens are prepared, the tests can be performed according to the following procedures.

Step 1: Wipe the dust on the lower pressure chamber off with soft material. Apply a thin layer of vacuum grease on the surface of the lower pressure chamber. Put a piece of filter paper on the lower pressure chamber and then the specimen. The function of the filter paper is to support the specimen and meanwhile prevent the vacuum grease entering the lower pressure chamber.

Step 2: Tighten the test cells. Set test parameters and then start tests.

The tests will be performed automatically and the test results will be given after the tests are finished.

For more details about C130H Gas Permeability Tester, please visit www.labthink.com

About Labthink Instruments Co., Ltd:

Labthink Instruments Co., Ltd is one leading supplier of packaging testing instruments, which is headquartered in Jinan, China and operated in Boston, U.S.A.