Material Withstands Pulling Force

Tear resistance fundamentally describes a material’s ability to withstand a pulling force that attempts to propagate a pre-existing cut or flaw. It is a measure of how much energy is required to continue a tear once it has been initiated, which is different from a material’s overall tensile strength. This property is critical in applications where small punctures or nicks are common, as a highly tear-resistant material will prevent a minor damage from turning into a catastrophic failure. The standard method for quantifying this involves using a specialized tensile testing machine to measure the force needed to extend a tear in a precisely prepared sample. This data allows engineers to compare materials and select the most appropriate one tailored to specific functional requirements—such as easy-open features for consumers or high-impact durability.

Fabric Resists Ripping Damage

When a fabric or film is described as tear resistant, it means it has a high resistance to ripping damage when subjected to a sudden or sustained stress. This is often achieved through the material’s internal structure, such as a tight weave, laminated layers, or the inclusion of reinforcing fibers that help distribute the force away from the point of stress. The goal is to prevent a small snag from developing into a large, compromising rip. Testing these properties is essential for quality control, and companies like Labthink provide the equipment necessary to perform these evaluations accurately. Understanding a material’s tear resistance helps manufacturers create longer-lasting products, reduce warranty claims, and enhance user confidence in items ranging from industrial membranes to packaging materials.

Strong Material Prevents Tearing

A strong material that prevents tearing is engineered to absorb and dissipate energy rather than allowing it to concentrate and cause a rupture. This characteristic is not just about raw strength but also about toughness and elongation—the material’s ability to stretch and deform slightly without failing. Factors like polymer composition, fiber orientation, and manufacturing processes all contribute to a material’s final tear resistance. For instance, a fabric with a rip-stop grid is designed to localize tears within a single square of the grid. By scientifically measuring this property, manufacturers can predict real-world performance, ensuring that products can endure the rigors of their intended use without succumbing to tearing forces, thereby improving durability and functional lifespan.

Conclusion

We provide the C610M Auto Tensile Tester, a machine that performs tensile strength and tear resistance testing. It measures properties including peeling, deformation, and puncture force on materials such as plastic films, adhesives, rubber, and paper. Our tester is designed to operate in accordance with various test standards, including ISO 37, ASTM D882, ASTM D1938, ASTM D3330 and GB/T 1040.1. It can be configured with more than 100 grips for testing over 1000 different materials, allowing us to support a wide range of quality control and research applications.

This double-column universal testing machine is engineered for a maximum force capacity of 10 kN, allowing it to handle a wide range of testing applications, including tension, compression, bending, shearing, and peeling tests. It is equipped with a computerized system for seamless control and data acquisition, making it both user-friendly and highly accurate.

1. High Precision Load Cell
   • Ensures accurate force measurements within the range of 10 kN.
   • High resolution and sensitivity for detailed data analysis.
2. Double Column Design
   • Provides excellent stability and rigidity.
   • Suitable for testing various materials, including plastics, metals, textiles, elastomers, and composites.
3. Computerized Control System
   • Fully automated control of test parameters.
   • User-friendly software interface for test setup, real-time monitoring, and data analysis.
4. Versatile Test Applications
   • Capable of performing multiple tests such as tensile, compression, peel, tear, shear, and more.
   • Compliant with international testing standards like ASTM, ISO, GB, and more.
5. Customizable Fixtures
   • Equipped with interchangeable grips and fixtures to accommodate diverse material types and testing needs.
6. High-Speed Data Acquisition
   • Advanced sensors capture test data at high speeds for accurate analysis.
   • Generates force-displacement curves, stress-strain graphs, and other key metrics.
7. Safety Features
   • Built-in overload protection.
   • Emergency stop functions ensure safe operation during testing.

The Labthink 10 kN Double Column Universal Testing Machine is widely used in industries such as:

• Packaging: Testing tensile and peel strength of packaging materials like films, laminates, and adhesives.
• Textiles: Evaluating tensile and tear strength of fabrics and fibers.
• Plastics and Polymers: Determining material elongation, modulus, and yield strength.
• Construction: Testing compressive strength of building materials.
• Automotive: Assessing strength and durability of components and materials.

1. High Accuracy and Repeatability
   • Delivers consistent and reliable results for critical material testing applications.
2. Ease of Operation
   • Intuitive software reduces setup time and ensures smooth operation for users of all experience levels.
3. Comprehensive Analysis
   • Provides detailed reports and customizable graphs for in-depth material performance evaluation.
4. Durable Build
   • The robust double-column design ensures longevity and reliability, even under demanding testing conditions.
5. Standards Compliance
   • Ensures test results meet global industry standards for quality assurance and certification.

Labthink is a globally recognized leader in material testing solutions, known for its innovative products and reliable customer support. The 10 kN Double Column Computerized Universal Testing Machine represents Labthink’s commitment to delivering precision, quality, and value to its customers.

The Labthink 10 kN Maximum Force Double Column Computerized Universal Testing Machine is an indispensable tool for industries that require accurate and reliable material testing. Its advanced features, customizable capabilities, and compliance with international standards make it a top choice for quality control and research laboratories.

If you’re looking to elevate your material testing capabilities, the Labthink 10 kN Universal Testing Machine is the perfect solution to meet your requirements.

Importance of Peel Strength Testing for Mask Tapes

Mask tapes are commonly used in industries like construction, automotive, painting, and electronics for temporary masking, bonding, or protection. The peel strength test ensures:

1. Adhesive Performance: Determines the tape’s ability to bond securely to surfaces and be removed without damage.
2. Durability: Evaluates the tape’s resistance to environmental factors like temperature, humidity, and UV exposure.
3. Quality Control: Ensures consistency across production batches.
4. Application Suitability: Confirms the tape meets specific requirements for its intended use, such as clean removal or strong adhesion.

Overview of ASTM D3330

ASTM D3330 is a standardized test method designed to measure the peel adhesion strength of pressure-sensitive tapes. This test is versatile and can be applied to a variety of tape types and substrates.

Key Parameters Tested

1. Peel Strength: Measures the force required to remove the tape from a substrate at a controlled angle and speed.
2. Adhesion Uniformity: Identifies any inconsistencies in the tape’s adhesive layer.

Equipment of Peel Strength Testing

Labthink C610H Tensile Tester, a Universal Testing Machine (UTM) can used for ASTM D3330 tests. The Tensile tester applies and measures the force required to peel the tape from a substrate at a controlled rate and angle.

Key Features of Labthink tensile tester

• Force Measurement Range: Must be precise enough to measure the relatively low forces associated with peeling (e.g., in Newtons or ounces).
• Speed Control: Should offer adjustable peeling speeds, typically 300 mm/min (12 in/min) as specified by ASTM D3330.
• Load Cell: Equipped with an appropriate load cell for precise force measurements.
• Software: Data acquisition software to record, display, and analyze test results, including peak and average peel strength.

Peel Test Fixture

The peel test fixture is designed to securely hold the substrate and tape during the test. It ensures that the tape is peeled at a consistent angle, such as 180° or 90°, depending on the test method.

Types of Fixtures:

• 180° Peel Fixture: Designed to hold the substrate flat while peeling the tape at a straight, horizontal angle.
• 90° Peel Fixture: Includes a clamping mechanism that adjusts the angle to 90° for applications requiring this orientation.

Labthink Tensile testers series can meet all the requirements of ASTM D3330 Peel strength testing. If you need more information about the testing process or specific equipment recommendations, feel free to ask!

Why Measure Cap Torque?

Torque measurement is critical for several reasons:

1. Quality Control
   • Ensures caps are neither too tight nor too loose, preventing leaks or tampering while maintaining user convenience.
2. Regulatory Compliance
   • Many industries, such as food, beverage, and pharmaceuticals, require torque testing to meet packaging standards.
3. Customer Satisfaction
   • Prevents issues like excessive difficulty in opening bottles or premature loosening of caps.
4. Packaging Integrity
   • Verifies that seals are intact and product freshness is preserved.

Applications of Torque Testing

1. Food and Beverage Packaging
   • Ensures consistent sealing of bottled products like water, soda, and sauces.
2. Pharmaceuticals
   • Tests child-resistant caps and ensures proper sealing to maintain product integrity.
3. Cosmetics and Personal Care
   • Measures torque for screw-top jars and bottles to ensure ease of use and security.
4. Industrial Chemicals
   • Prevents spills and ensures safety during transport and storage.

Key Features of Bottle Cap Torque Testers

Modern torque testers are designed with advanced features to accommodate various bottle types and sizes. Some of these features include:

1. High Precision
   • Provides accurate torque measurement to ensure consistency.
2. Digital Interface
   • Displays real-time readings with options for data storage and analysis.
3. Adjustable Clamps
   • Accommodates different bottle shapes and cap sizes.
4. Bidirectional Testing
   • Measures both application torque (tightening) and removal torque (loosening).

Industry Standards for Torque Testing

Several standards guide the measurement of cap torque, including:

1. ASTM D2063 – Standard Test Methods for Plastic Closures.
2. ISO 9364 – Determination of torque retention for closures.
3. USP Guidelines – For pharmaceutical packaging compliance.

Benefits of Using Bottle Cap Torque Testers

1. Improved Product Safety
   • Ensures caps are secure enough to prevent tampering or leakage.
2. Enhanced User Experience
   • Provides optimal torque for easy opening without compromising seal integrity.
3. Production Efficiency
   • Identifies torque inconsistencies early, reducing waste and production delays.
4. Cost Savings
   • Prevents product recalls due to packaging failures.

Conclusion

A Bottle Cap Torque Tester is an indispensable tool for packaging quality control across industries. By ensuring the right balance of sealing force, manufacturers can maintain product integrity, comply with industry regulations, and enhance customer satisfaction.

For advanced testing solutions, Labthink offers state-of-the-art torque testers designed to meet the needs of modern packaging operations.

Let me know if you’d like to explore detailed specifications for specific models!

Flip-caps have various shapes and materials, whether square or round, metal or plastic, the opening force of the cap is the most concerned problem of manufacturers and users. If the opening force is too great, user will not only feel difficult to open, but also the opening process will even result in the deformation of the packaging containers. If the opening force is too small, the possible leakage is unsafe to the user. So, the opening force test of the flip-cap is very necessary.

At present, there is a professional flip-cap opening force tester on the market, it can also test plastic film, sheet, tube, adhesive, rubber, combined closure, paper and other products of their puncture force, opening force, low speed unwinding force, pulling force and other performance process detection by the tester. Through the microcomputer control of plastic flip cap , LCD displays data, results, curve, fixed extension stress, elastic modulus, stress strain and other test parameters to reflect the opening capability of plastic flip cup. Labthink XLW (PC) Tensile Tester can detect the opening force of flip cap of different shapes and materials, and help the production enterprises of flip caps to adjust and control the production process.

XLW (PC) Tensile Tester is professional to test tensile performance and mechanical properties of all kinds of flexible packaging materials, which is suitable for plastic film, adhesive agent, adhesive tape, medical plastic paste, protective film, flip cap, back panel material, non-woven fabric, rubber, paper fiber and other products of their stretching, stripping, deformation, tearing, hot sealing, bonding, puncture force performance tests. Its high accuracy (level 0.5) ensures the accuracy of the test. Seven independent test procedures, multiple force value sensors, and seven test speed selection can meet the users’ different test needs. Its intelligent operation software not only facilitates the user to control the equipment, but also provides a variety of practical functions such as data analysis and comparison.

Of course, the opening force of the flip cap is a concern in the use of the product, but it is far from enough for the quality control of the manufacturers. After ensuring the opening force of the bottle closure, some other items, such as the overall sealing performance of the packaging bottle, are controlled to ensure the quality and safety of the products. Labthink has been engaged in the research and development and production of packaging testing instruments and in the quality control and testing of food packaging for a long time. Labthink hopes to enhance exchanges and cooperation with enterprises and institutions in the industry. If you need to know more about the packaging industry testing equipment, please log on to the website of Labthink, www.labthink.com, for information, or call 0086 0531-85068566 for consultation. Labthink is looking forward to enhancing technical exchanges and cooperation with enterprises and institutions.

The compound fastness between the mono layers of the composite packaging film is measured by the peel strength, which is one main property used to evaluate the quality of composite packaging film.

In practical application, if the peel strength of the composite film is too low, delamination may occur to the film after the content is packed inside the package. As a result, the barrier property as well as mechanical properties e.g. impact resistance of the packaging material may be compromised.

This article provides a simplified test method for the peel strength of the aluminum plastic composite package for meat products. The test specimens are provided by one meat product manufacturer. The testing instrument we used for the tests is Labthink’s C610H Auto Tensile Tester.

The tests shall be performed according to the following procedures.

(1)    Cut specimens from the sample material along machine direction and transverse direction. 5 pieces of specimens for each direction. The size of the specimen should be 200mm by 15mm.

(2)    Peel the specimen from one end by 50mm along the machine direction as is shown in the figure below.

(3) Clamp the two ends of the peeled part of the specimen with the upper and lower sample grips. Make sure the longitudinal axis of the specimen coincides with the line of centers of the uppwer and lower sample grips.

(4) Set test speed, specimen width and other test parameters.

(5) Click Test to start the test. The system will record the peeling forces in the testing process, calculate and display the final test results automatically.

For more details about C610H Auto Tensile 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.

In medical industry, blister packaging is commonly used as unit-dose packaging for pharmaceutical tablets, capsules or lozenges. The medicines are held in the blister cavities, which  are separated medicines from each other. Even though one blister cavity is broken, others can keep intact. Therefore, heat seal strength of the paperboard or aluminum foil should be adequate. Otherwise when one tablet or capsule is removed from the blister package, other blister cavities may be broken and then medicine may be oxidized and damped. Therefore it is necessary to test the heat seal strength of the medical blister packaging to guarantee the quality of medicines contained inside.

Figure 1. Medical Blister Package

How to know and make sure if the blister packaging has enough seal strength？ What manufacturers can do during the packaging producing? We will discuss these with assistance of a Tensile Strength Tester.

Step 1: Seal the rigid PVC sheet and aluminum foil with Labthink HST-H3 Heat Seal Tester under specified conditions (sealing temperature 155±5℃, sealing pressure 0.5MPa, dwell time 1 second).

Step 2: Cut 3 pieces of specimens whose length should be 15mm.

Step 3: Mount the prepared specimen in the sample grips of XLW  Auto Tensile Tester. Select test speed 200 mm/min and then start test. When test is finished, the instrument will calculate and record the test results automatically.

According to the test results given by the instrument, the manufacturer can determine whether the blister package can meet their requirements for packing of medicines.

For more details about XLW  Auto Tensile Tester and HST-H3 Heat Seal Tester, please visit en.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.

2. Test standard

The test methods for tear performance of soft plastic packaging include right angle tear method, Trouser tear method and Elmendorf method. In this paper, the test samples are torn at the tear notch, according to the shape of the tear notch and the angle of force applied when being torn, the Trouser tear method is used to test the samples. The test standard is ISO 6383-1 Plastics — Film and sheeting — Determination of tear resistance — Part 1: Trouser tear method.

3. Test sample

In this test, a brand of shampoo packaging aluminum composite film was used as the test sample.

4. Test instrument

The test equipment used in this paper is XLW (PC) Auto tensile tester, which is independently developed and produced by Jinan Labthink Instruments Co., Ltd.

4.1 Test principle

The trouser tear test method refers to that the shape of the test sample is similar to “trouser”. Clamp two legs of the test sample in the upper and lower grips of the instrument. When the upper grip moves upward, one leg of the test sample will be pulled to tear the test sample along the long axis. The load cell and the displacement sensor record the load and displacement change during the tearing process and form a test curve, take the mean of the recorded force values as the tear force of the sample, and calculate the tear strength of the sample.

5. Test process

1)      Specimen: cut 5 specimens from the test sample in the direction of processing and against the process direction respectively. The size of the specimen is 150 × 50 mm, the length of the slit in the center of the specimen shall be 75.0 mm. The test specimen shall be cut so that the edges are smooth and free from notches.

2)      Conditioning: place the test specimen in a condition of 23℃. 50%RH for 4 hours.

3)      Measure the thickness: measure three spots on the specimen in equal interval and take the average value of the three measurements.

4)      Parameters settings: set specimen name, thickness, test speed, number of specimens and other parameters.

5)      Start the test: clamp the two legs of the specimen on the upper and lower grips of the instrument, click “start” to start the test.

6)      End test: when the test is completed, the instrument displays the tear force and tear strength. Repeat the above steps to test the rest of the specimens.

6. Test result

The longitudinal tear strength of the sample tested in this test is 11.465 kN / m, and the transverse tear strength is 8.027 kN / m.

7. Conclusion

The easiness of tearing open a shampoo pouch is an important factor of the convenient use. In this paper, XLW (PC) auto tensile tester is used to test the trouser tear strength of a brand of shampoo’s aluminum coated composite film packaging sample. The test process is simple and the instrument is easy to operate. In addition to tear force, the oxygen resistance, sealing performance, composite fastness, heat sealing strength and other properties of the packaging bag should also be tested to prevent the oxidation, deterioration, leakage and bag breaking of shampoo.

Jinan Labthink Instruments Co., Ltd, is dedicated to providing customers with packaging testing solutions and helping the manufacturers to reach their goals of quality and safety assurance through improvement of packaging testing techniques and development of high-end packaging testing instruments. The newly introduced C series barrier testing systems adopting self-sensing technology revolutionarily improved the testing accuracy, efficiency and automation, realized the paradigm shift of packaging barrier testing instruments. For more information please visit www.labthink.com

Test Sample

In this test, an anti-static packaging bag is used as the test sample, and the puncture strength is tested to characterize the ability of the sample to withstand external force puncture.

Standard

The test process of puncture strength of soft plastic packaging materials refers to the regulations regarding puncture strength in GB/T10004-2008 “Plastic laminated films and pouches for packaging -dry lamination and extrusion lamination”.

Test Instrument

In this test, XLW (PC) Auto tensile tester is used as the test instrument, which is independently developed and produced by Jinan Labthink Instruments Co., Ltd.

Test Principle

The puncture strength is a certain value of force required for puncturing a sample. During the test, the sample is fixed in the lower grip which remains still, the puncture needle is installed in the upper grip of the equipment, the upper grip can move up and down according to the set speed, and the load cell and displacement transducer are equipped. The upper grip drives the puncture needle to move towards the sample according to the set speed, and penetrates the sample gradually. The load cell records the value change of the force with the displacement during the puncture process in real time, so as to obtain the puncture strength and the deformation during the puncture.

Figure 1 XLW(PC) Auto Tensile Tester

Test Process

(1) Use a sampler to cut 5 specimens with a diameter of 100 mm from the surface of the sample to be tested.

(2) Install the puncture needle in the upper grip of the equipment, and take one specimen and clamp it in the lower grip.

(3) Set the parameters such as sample name, test speed and test times in the control software of the equipment, and click the “test” to start the test. The upper grip moves and penetrates the test according to the set parameters, the test is completed, and the equipment displays the test results.

(4) Replace the specimen and continue the test until all 5 samples are tested.

Test Result

Take the arithmetic mean value of the test results of five samples as the puncture strength value of the anti-static packaging bag, which is 10.876N.

Conclusion

Puncture resistance performance is an important performance index of anti-static packaging bag. In this paper, the puncture strength of the sample was tested by an intelligent electronic tensile testing machine to characterize its puncture resistance. The test process is simple, the equipment is easy to operate, the accuracy and repeatability is high, and the test result is accurate and reliable, which can reflect the puncture resistance of the tested samples. In addition to testing puncture strength, the equipment used in this paper can also test the tensile properties, composite fastness, heat sealing strength, tear strength and other properties of soft plastic packaging materials, which is high cost-effective equipment.

Jinan Labthink Instruments Co., Ltd is dedicated to providing customers with packaging testing solutions and helping the manufacturers to reach their goals of quality and safety assurance through improvement of packaging testing techniques and development of high-end packaging testing instruments. The newly introduced C series barrier testing systems adopting self-sensing technology revolutionarily improved the testing accuracy, efficiency and automation, realized the paradigm shift of packaging barrier testing instruments. For more information please visit en.labthink.com