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Tear Tester ED-30

DESCRIPTION:

INTRODUCTION: Tear testing measures the force required to continue the tearing of initial cut in sheet materials. Models and weights are available to test material with a variety of strengths. This is also useful to evaluate strength of perforated materials such as reply cards. Also known as the Elmendorf test, the tearing test has been performed in the paper industry for more than half century in order to measure the mean internal resistance of cellulose or papers to the propagation of a deliberately initiated tear. It enables rapid determination of the dynamic resistance of materials designed to be subjected to strong shearing loads(e.g. newspaper) or liable to be damaged by sharp or heavy objects (e.g. paper bags). Subsequently, the test was naturally adopted for all materials in the form of sheet or films, cardboards, cloth, knitted fabrics, plastic films, aluminum foil,non-woven fabrics, complex flexible packaging etc. for which the service requirements are similar to those for paper. PRINCIPLE: The test is carried out on a specimen composed of one or more sheets of standard dimensions, usually with a distance of 43mm (1.7 in) remaining to be torn after initiating the tear. The energy of a pendulum of suitable weight is used to completely tear the specimen. The difference in the angle from the vertical of the center of gravity of the pendulum between the downswing and upswing is a measure of the energy absorbed in tearing the sample. This angular movement is measured with a digital encoder and is immediately converted to the mean tearing force for a single sheet by the microprocessor incorporated in the apparatus. APPLICATIONS: Paper, Foil, Film, Non-wovens, Fabric, Textiles, Flexible packaging

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Veronica Felix

Basic Member

Veronica Felix

Executive, Testing Machines Inc.

Member Since: Aug 2007

When you contact Veronica Felix, tell them you found their company details on PaperIndex.

Location

Address Line1 40 McCullough Drive
City New Castle
Postal Code 19720
State Delaware
Country United States
Region North America

Office Schedule

Working Days Monday to Friday
Working Hours 9 AM to 5 PM
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