What is a loop tack test?

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The loop tack test measures the contact tack of an adhesive tape that has been formed into a loop. The fixture meets the requirements for ASTM D, FINAT FTM 9 and PSTC 16.   When used with the Vantage NX Universal Tensile Tester, a pair of grips hold the sample and the fixture during the test.  The Vantage NX Tester is paired with MAP4 Materials Testing Software which is configured to meet the industry standard and programs the test based on the method selected.  The sample&#;s adhesive properties are then displayed as real-time results including peak force to debond from the plate.

Method Summary:

• A loop is created from the test material with the adhesive-coated side to contact the substrate or stainless steel plate. 
• The ends are clamped together in an upper grip
• The loop is pushed onto the surface, compressing the adhesive. 
• Then the loop is pulled up and gradually debonds from the substrate or plate.   

For more information, please visit loop tack test equipment.

MAP4 Results:

ASTM D | Adhesives | Peel Testing

The &#;Loop Tack&#; test is used to measure the tack force / strength of a pressure sensitive adhesive (PSA) according to ASTM D. Pressure sensitive adhesives are typically applied to films, labels, tapes, and stickers where the initial tack force is an important characteristic of the product. ASTM D describes two ways to perform the test.

Method B uses a single purpose machine. Although the simplicity of one dedicated machine is nice, the loop tack test is not often the sole test of any manufacturer. Method A uses a universal testing machine otherwise known as a tensile testing machine. A Universal Testing Machine provides accurate test results, the same ease of use as the single purpose machine, and also allows you to perform many other common adhesive and material tests such as 90 degree peel adhesion tests, 180 degree peel adhesion tests, and standard tensile strength testing.

Prior to conducting ASTM D, it is important to read the entire specification in the relevant ASTM publication.

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