YY108D Pneumatic Tear Tester

Short Description:

Instrument Description:

YY108D Pneumatic Tear Tester is designed to measure the force required to tear a certain number of pre-notched sheets, such as paper, plastic films, polymer materials, and non-woven fabrics. The instrument adopts an optical encoder to measure the angular position of the pendulum during tearing and converts this measured value into tearing units. It is suitable for determining the tearing resistance of various types of paper and can also be used for testing the tear resistance of low-strength sheet-like composite materials such as textiles, leather, and films. It is widely applied in paper mills, scientific research institutions, and quality inspection departments.

Working Principle:

A stack of test samples with specified pre-notches (usually 4 layers) is clamped. The pendulum is lifted to a certain height to accumulate a specific amount of potential energy. When the pendulum swings freely, it uses its stored energy to tear the sample over a fixed distance. The work done in tearing the sample is measured by the loss of potential energy of the pendulum.

Executive Standards:

GB/T 455, QB/T 1050, GB/T 16578.2, ISO 1974, TAPPI T414, ISO 6383-1, ISO 6383-2, ASTM D1922, ASTM D1424, ASTM D689

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Professional Technology:

1. Full touch screen control, automatic and electronic measurement for quick operation.

2. Pneumatic sample clamping, automatic sample cutting, automatic pendulum release, and automatic pendulum reset after testing, which greatly improves efficiency and effectively avoids system errors caused by human factors.

3. Computer-aided level adjustment system ensures the instrument is always in optimal testing condition.

4. Multiple sets of pendulum capacities are available to meet different testing requirements.

5.Professional software supports data output in various test units.

6. Standard RS232 interface facilitates external system connection and data transmission.

Technical Parameters:

Measuring Range	(1~6400gf)Standard configuration with 4 sets of weights
Tear Arm Length	104±1mm
Initial Tear Angle	0°
Tear Distance	43±0.25mm
Notch Length	20mm
Longitudinal Notch Displacement	8mm
Paper Clamping Surface Size	25*15mm
Maximum Clamping Area	6.48cm²
Clamping Torque Ratio	2.2:0.7
Number of Free Swings	min≥20, mid≥25, stand≥35
Sample Size	(63±0.5)mm x (50±2)mm
Cutter Arm Ratio	14:5.5
Tear Offset	Less than 10mm from the extension line of the knife edge
Distance Between Paper Clamps	2.8±0.2mm
Clamping Method	Double-cylinder pneumatic clamping, automatic paper cutting; automatic pendulum release during testing; automatic pendulum reset after testing; automatic data capture;
Air Pressure	0.4~0.6mpa
Human-Machine Interface	7-inch touch screen for display and operation, modular integrated thermal printing function
Dimension	460mmx400mmx560mm
Net Weight	40kg