EUROLAB, with its state-of-the-art accredited laboratories and expert team, provides precise and fast testing services within the scope of EN 29073-4 testing. This standard specifies a procedure for the determination of the tearing force of nonwoven textiles using the trapezoidal method. A rectangular specimen is marked and prepared so that it can be loaded at an angle to the gripping surfaces, allowing a tear to propagate through the specimen.
For this test, it is important to have an increased test data rate to ensure a high number of data points are captured. This is because if the individual fibers in the fabric fail, the data rate must be fast enough to catch these peaks.
Marking the trapezoid on a test specimen. Clamping the non-parallel edges of the trapezoid to the jaws of a tensile testing machine. Applying an ever-increasing elongation to the test sample causing a tear to spread across its width. The force to continue tearing over a given distance is recorded. As a result of the test, the arithmetic average of the maximum force of the samples is taken.
Pneumatic side action jaws with rubber coated jaw surfaces are well suited for clamping trapezoidal specimens. While manual action grips will work, many prefer pneumatic side action grips for ease of use, productivity and better repeatability. Adjustable grip pressure also allows users to fine-tune grip pressure to prevent jaw breakage or slippage.
EUROLAB assists manufacturers with EN 29073-4 test compliance. Our test experts, with their professional working mission and principles, provide you, our manufacturers and suppliers, the best service and controlled testing process in our laboratories. Thanks to these services, businesses receive more effective, high-performance and quality testing services and provide safe, fast and uninterrupted service to their customers.
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