{"id":9823,"date":"2026-02-24T15:11:44","date_gmt":"2026-02-24T07:11:44","guid":{"rendered":"https:\/\/www.packqc.com\/standard\/pstc-16-3\/"},"modified":"2026-04-16T09:59:30","modified_gmt":"2026-04-16T01:59:30","slug":"pstc-16","status":"publish","type":"standard","link":"https:\/\/www.packqc.com\/bg\/standard\/pstc-16\/","title":{"rendered":"PSTC 16"},"content":{"rendered":"

Understanding PSTC 16 and Loop Tack Testing<\/h2>\n\n\n\n

What is PSCT 16?<\/h3>\n\n\n\n

PSTC 16<\/strong> is a standard published by the Pressure Sensitive Tape Council (PSTC) that outlines the procedures for measuring the loop tack of pressure-sensitive adhesives. This test evaluates the ability of the adhesive to adhere to a surface under immediate pressure, a crucial factor in determining how well the tape will perform under normal conditions. The \u043f\u0440\u0438\u0445\u0432\u0430\u0449\u0430\u043d\u0435 \u043d\u0430 \u043f\u0440\u0438\u043c\u043a\u0430<\/strong> test is a fundamental part of quality assurance for manufacturers of pressure-sensitive tapes, ensuring they meet performance expectations.<\/p>\n\n\n\n

What Is the Loop Tack Test?<\/h3>\n\n\n\n

\u041f\u0440\u0438\u0445\u0432\u0430\u0449\u0430\u043d\u0435 \u043d\u0430 \u043f\u0440\u0438\u043c\u043a\u0430<\/strong> refers to the force required to separate an adhesive from a substrate immediately after contact. Unlike peel or shear strength, tack measures the instantaneous bond formation<\/em> capability of the adhesive. The pressure sensitive tape loop tack test<\/strong> simulates real-world scenarios where tapes must adhere swiftly with minimal pressure.<\/p>\n\n\n\n

PSCT 16 Loop Tack Test Method<\/h2>\n\n\n\n

PSTC 16 outlines two distinct methods for performing the loop tack test: Test Method A and Test Method B. Both methods involve forming a loop of adhesive tape, bringing it into contact with a stainless steel panel, and measuring the separation force. The key difference between these methods lies in the testing equipment.<\/p>\n\n\n\n

\u041c\u0435\u0442\u043e\u0434 \u043d\u0430 \u0438\u0437\u043f\u0438\u0442\u0432\u0430\u043d\u0435 \u0410
Uses a tensile tester with a 175 mm specimen<\/small><\/a><\/h3>\n\n\n\n

In Test Method A, technicians utilize a tensile tester to measure the force required to detach the loop of tape from a surface. This method is precise but can require more setup and calibration.<\/p>\n\n\n\n

\u041c\u0435\u0442\u043e\u0434 \u043d\u0430 \u0438\u0437\u043f\u0438\u0442\u0432\u0430\u043d\u0435 \u0411
Employs a dedicated loop tack tester with a 125 mm specimen<\/small><\/a><\/h3>\n\n\n\n

Test Method B, on the other hand, uses a specialized \u0442\u0435\u0441\u0442\u0435\u0440 \u0437\u0430 \u043f\u0440\u0438\u043c\u043a\u0438<\/b>, such as the LTT-01 from Cell Instruments. This method provides a more straightforward and automated approach, delivering consistent results with minimal operator input. The LTT-01 is specifically designed to meet the requirements of PSTC 16, ensuring compliance with industry standards.<\/p>\n\n\n\n

Test Method A vs. Test Method B<\/h3>\n\n\n\n

While both methods evaluate loop tack, their equipment and specimen requirements differ:<\/p>\n\n\n\n

Aspect<\/strong><\/th>\u041c\u0435\u0442\u043e\u0434 \u043d\u0430 \u0438\u0437\u043f\u0438\u0442\u0432\u0430\u043d\u0435 \u0410<\/strong><\/th>\u041c\u0435\u0442\u043e\u0434 \u043d\u0430 \u0438\u0437\u043f\u0438\u0442\u0432\u0430\u043d\u0435 \u0411<\/strong><\/th><\/tr><\/thead>
Specimen Length<\/strong><\/td>175 mm (7 inches)<\/td>125 mm (5 inches)<\/td><\/tr>
Equipment<\/strong><\/td>\u0422\u0435\u0441\u0442\u0435\u0440 \u0437\u0430 \u043e\u043f\u044a\u043d<\/td>Loop Tack Tester<\/td><\/tr>
Contact Area<\/strong><\/td>625 mm\u00b2 (1 in\u00b2)<\/td>625 mm\u00b2 (1 in\u00b2)<\/td><\/tr>
\u041f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f<\/strong><\/td>Research & Developmenct<\/td>Quality Control & Production<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u041c\u0435\u0442\u043e\u0434 \u043d\u0430 \u0438\u0437\u043f\u0438\u0442\u0432\u0430\u043d\u0435 \u0411<\/strong> is often preferred for routine testing due to its specialized design, which minimizes variability and accelerates workflows.<\/p>\n\n\n\n

Procedure Highlights for PSTC 16 Testing<\/h2>\n\n\n\n
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  1. \u041f\u043e\u0434\u0433\u043e\u0442\u043e\u0432\u043a\u0430 \u043d\u0430 \u043f\u0440\u043e\u0431\u0430\u0442\u0430<\/strong>\n
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    • Cut specimens to the required dimensions (24 mm width).<\/li>\n\n\n\n
    • Condition samples at 23\u00b0C \u00b12\u00b0C and 50% \u00b15% relative humidity for 24 hours.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
    • \u041f\u0440\u043e\u0446\u0435\u0434\u0443\u0440\u0430 \u0437\u0430 \u0442\u0435\u0441\u0442\u0432\u0430\u043d\u0435<\/strong>\n
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      • Clean the stainless steel panel to remove residue.<\/li>\n\n\n\n
      • Form the tape into a loop (adhesive facing outward).<\/li>\n\n\n\n
      • Bring the loop into contact with the panel using controlled force.<\/li>\n\n\n\n
      • Measure the maximum force required to separate the adhesive.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
      • Failure Modes<\/strong>\n
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        • Adhesive Failure: Separation at the adhesive-substrate interface.<\/li>\n\n\n\n
        • Cohesive Failure: Internal splitting within the adhesive layer.<\/li>\n\n\n\n
        • Adhesive Transfer: Residual adhesive remains on the substrate.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n
          \n