I. Product Overview The Manual Tear Strength Tester is a precision instrument designed to measure t
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The Elmendorf Tearing Strength Tester is a precision mechanical instrument designed to measure the tear resistance of materials using standardized methods, including the Elmendorf and tongue tear tests. It evaluates the force required to propagate a tear in textiles, plastics, rubber, and composite materials, ensuring compliance with international quality standards. The tester is ideal for quality control, R&D, and material characterization laboratories.
The tester is widely used to assess tear strength and durability in:
Textiles: fabrics, nonwovens, and composite textiles
Plastics: films, sheets, and polymer materials
Rubber: industrial hoses, tire treads, and elastomers
Forensic Analysis: investigation of material failures and defect analysis
ASTM D1424 (Textile Tear Resistance, Elmendorf Method)
ISO 34 (Plastics and Rubber Tear Methods, Tongue Method)
EN ISO 6383-2 (Rubber Tear Strength)
GB/T 3917.1 (Chinese Textile Standard)
(1) Dual Test Modes:
Elmendorf Test for high-speed single-edge tear
Tongue Test for central slit propagation
(2) Digital Force Gauge: 0.1 N resolution with auto-zero calibration
(3) Manual Operation: Crank pendulum lift with ratchet safety lock; no electricity required
(4) Adjustable Clamping: Anti-slip jaws for secure specimen fixation
(5) Modular Weights: Customize pendulum energy to match material strength
(6) High Accuracy: ±1% full scale, ensuring repeatable results
| Parameter | Specifications |
|---|---|
| Pendulum Range | 160–640 g (9 selectable weights) |
| Clamping Force | 50±5 N (adjustable via screw mechanism) |
| Tear Speed | 1.2±0.2 m/s (controlled by pendulum drop height) |
| Measurement Accuracy | ±1% FS (ISO 376 standard) |
| Sample Size | 63×127 mm (Elmendorf), 50×200 mm (Tongue) |
| Dimensions (L×W×H) | 800×400×1200 mm |
| Capacity | 50–5000 mN (adjustable via pendulum weights) |
(1) Modular pendulum weights
(2) Adjustable clamping jaws
(3) Specimen holders for Elmendorf and tongue tear methods
(4) Calibration set
(5) User manual and compliance documentation
(1) Sample Preparation: Cut material to specified dimensions.
(2) Clamping: Secure specimen in the vise using the recommended clamping force.
(3) Calibration: Adjust the digital gauge to zero before testing.
(4) Testing: Lift and release the pendulum to initiate the tear; record the peak force.
(5) Analysis: Calculate tear energy (J/m²) or tear force (N).
(6) Safety: Wear gloves when handling sharp samples; avoid loose clothing near moving parts; ensure pendulum weights are securely fastened.
Qinsun Instruments Co., LTD is a professional laboratory testing instrument manufacturer in China,Have been focusing on laboratory instrument R&D more than 30 years and have rich industry experience,Based on international testing standards,We are also the instrument supplier for BV SGS laboratory,We provide one-stop solutions for lab instruments,Free Training and Turn-Key Service,Products exported all over the world,Offer 36 month warranty and are a trustworthy partner.
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+86-21-6420 0566
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Monday to Friday
Mobile phone:
13816217984
Email:
info@qinsun-lab.com
