جهاز اختبار الكرة الدوارة من ديفونيان ASTM D3121 مع كرات فولاذية
مميزات خاصة
ASTM D3121 - 17 Standard Test Method for Tack of Pressure-Sensitive Adhesives by Rolling Ball.
This test method covers measurement of the comparative tack of pressure-sensitive adhesives by a rolling ball and is most appropriate for low-tack adhesives.
وصف
●Product model: ASTM D3121 Rolling Ball Tack Tester.
●Size of test piece: 25mm wide and 100mm long, with at least 3 test pieces.
●Slope length: 6.5 inches.
●Overall dimension: 230 * 60 * 70mm.
●Slope angle: 21°31′ deg;.
●Ball size: diameter 7/16″= 11.112mm, 14 # steel ball; (including).
●Weight: 800g.
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