Digital Elmendorf Tearing Tester

Digital Elmendorf Tearing Tester

Digital Elmendorf Tearing Tester is a precision instrument used to measure the tear strength of materials like woven fabrics, paper, plastic films, and nonwovens. It determines how much force is required to continue tearing a pre-slit sample.

Key Functions of Digital Elmendorf Tearing Tester:

– Measures propagation tear resistance, not initial tear.

– Uses a pendulum to apply force; the energy lost during tearing is calculated to determine tear strength.

– Equipped with a digital display for direct reading of results in grams or millinewtons.

Core Components:

– Pendulum Arm: Applies tearing force.

– Clamps: Secure the sample before and after the tear.

– Cutting Blade: Creates a precise slit at the start of the test.

– Digital Display Unit: Shows the tearing force result clearly and instantly.

– Counterweights: Optional weights for increasing test range (for stronger materials).

Applications of Digital Elmendorf Tearing Tester:

– Testing tear resistance of:

– Textile fabrics (especially woven)

– Paper and cardboard

– Plastic films

– Nonwovens

– Packaging materials

Benefits of Digital Elmendorf Tearing Tester:

1. Accurate Tear Strength Measurement – Provides precise data on tear resistance, critical for quality control and product performance.
2. Digital Readout – Easy-to-read display gives instant, reliable results without manual calculations.
3. High Reproducibility – Ensures consistent test outcomes due to controlled tearing angle and speed.

4. Fast Testing Process – Simple loading and quick test cycle increase lab efficiency.
5. Suitable for Various Materials – Tests a wide range of flexible materials like textiles, paper, plastic, and packaging.
6. Customizable Range – Use of optional weights extends the test range for low to high tear strength materials.
7. Low Sample Waste – Requires small fabric or material samples, reducing waste during testing.
8. Standards Compliance – Meets international testing standards (e.g., ASTM D1424, ISO 13937) for credibility and uniformity.

Features of Digital Elmendorf Tearing Tester:

Digital Display – Provides accurate and direct reading of tear strength in grams, mN, or cN. Pendulum Mechanism – Uses a swinging pendulum to simulate tear propagation with consistent force. Adjustable Test Range – Includes interchangeable pendulum weights to test various material strengths.

4. Precision Sample Clamp – Securely holds samples in place to ensure accurate tear initiation.
5. Pre-Cutting Blade – Integrated knife creates a precise initial slit in the sample before tearing.
6. User-Friendly Interface – Simple buttons and screen navigation for ease of operation.
7. Standard Test Compliance – Compatible with ASTM D1424, ISO 1974, ISO 13937, and other tear strength standards.

8. Sturdy Construction – Made with durable materials for long-lasting performance and stable operation.
9. Compact Design – Space-efficient footprint ideal for laboratory environments.
10. Data Output Options- Some models offer USB or printer connectivity for result documentation.

How to Use a Digital Elmendorf Tearing Tester:

1. Prepare the Sample – Cut the material (fabric, paper, film, etc.) to standard size (typically 100 × 63 mm for textiles) and slit it with the pre-cutter as required.
2. Select Pendulum Weight – Choose the appropriate pendulum or add counterweights based on expected tear strength.

3. Calibrate the Machine – Set the pendulum to its starting position and zero the display.
4. Clamp the Sample – Fix one half of the sample in the stationary clamp and the other in the moving clamp.
5. Cut the Initial Slit – Use the integrated blade to make a precise cut at the marked slit area (usually 20 mm).

6. Release the Pendulum – Trigger the pendulum to swing and tear the sample through the pre-slit.
7. Read the Result – The digital display will show the tearing force automatically (in g, mN, or cN).
8. Record or Export Data – Save or print the result if your model supports USB or printer connection.
9. Reset for Next Test – Reposition the pendulum and prepare a new sample for the next cycle.

Safety Tip: – Always ensure your hands are clear before releasing the pendulum.

Digital Elmendorf tearing tester

Scope of application
It is used for the determination of the tear resistance of various woven
fabrics (Elmendorf method), and it can also be used for the determination
of the tear resistance of thick paper, plastic sheeting, electrical tape, etc.

Related standards
GB/T 3917.1 FZ/T60006 FZ/T75001 ISO1974/9290 ASTM D1424/5734
etc.
Instrument characteristics
1. Maximum 300N test range
2. Microcomputer control, digital decoding, support online
communication
3. Color touch screen control, Chinese and English menu operation
interface

4. Pneumatic clamping, automatic cutting
5. A variety of measurement units (cN, gf) selection
6. Fully automatic operation with safe operation protection.
7. Automatically increase potential energy
[Technical parameter]:
1. Test range: first gear: (0～16)N second gear: (0～32)N third gear: (0～
64)N fourth gear: (0～128)N fifth gear: (0～300)N

2. Test accuracy: ≤±0.2%F·S
3. Tearing length: 43mm (non-standard 30-60mm can be set)
4. Automatic incision length: (20±0.2)mm
5. Sample size: (100×63)mm
6. Specimen clamping: pneumatic way

7. Sample test: Up to 10 sets per group on the device side, and 30 sets
of data can be selected to be saved
8. Power supply: AC220V±10% 50Hz 100W
9. Dimensions: (650×660×680)mm
10. Weight: 50kg
[Sample of control interface]:(English version is also available.)