{"id":9845,"date":"2026-02-24T15:11:45","date_gmt":"2026-02-24T07:11:45","guid":{"rendered":"https:\/\/www.packqc.com\/standard\/astm-d4917-2\/"},"modified":"2026-03-12T10:37:47","modified_gmt":"2026-03-12T02:37:47","slug":"astm-d4917","status":"publish","type":"standard","link":"https:\/\/www.packqc.com\/el\/standard\/astm-d4917\/","title":{"rendered":"ASTM D4917"},"content":{"rendered":"<h2 class=\"wp-block-heading\">\u039a\u03b1\u03c4\u03b1\u03bd\u03cc\u03b7\u03c3\u03b7 \u03c4\u03bf\u03c5 \u03c3\u03c5\u03bd\u03c4\u03b5\u03bb\u03b5\u03c3\u03c4\u03ae \u03c4\u03c1\u03b9\u03b2\u03ae\u03c2 \u03c3\u03c4\u03b9\u03c2 \u03b4\u03bf\u03ba\u03b9\u03bc\u03ad\u03c2 \u03c7\u03b1\u03c1\u03c4\u03b9\u03bf\u03cd<\/h2>\n\n\n\n<p><strong data-start=\"1472\" data-end=\"1505\">\u03a3\u03c5\u03bd\u03c4\u03b5\u03bb\u03b5\u03c3\u03c4\u03ae\u03c2 \u03c4\u03c1\u03b9\u03b2\u03ae\u03c2 (COF)<\/strong> \u03b5\u03af\u03bd\u03b1\u03b9 \u03bc\u03b9\u03b1 \u03ba\u03c1\u03af\u03c3\u03b9\u03bc\u03b7 \u03c0\u03b1\u03c1\u03ac\u03bc\u03b5\u03c4\u03c1\u03bf\u03c2 \u03c0\u03bf\u03c5 \u03b1\u03bd\u03c4\u03b9\u03ba\u03b1\u03c4\u03bf\u03c0\u03c4\u03c1\u03af\u03b6\u03b5\u03b9 \u03c4\u03b7\u03bd \u03b1\u03bd\u03c4\u03af\u03c3\u03c4\u03b1\u03c3\u03b7 \u03c3\u03c4\u03b7\u03bd \u03ba\u03af\u03bd\u03b7\u03c3\u03b7 \u03bc\u03b5\u03c4\u03b1\u03be\u03cd \u03b4\u03cd\u03bf \u03b5\u03c0\u03b9\u03c6\u03b1\u03bd\u03b5\u03b9\u03ce\u03bd. \u03a3\u03c4\u03b9\u03c2 \u03b5\u03c6\u03b1\u03c1\u03bc\u03bf\u03b3\u03ad\u03c2 \u03c7\u03b1\u03c1\u03c4\u03b9\u03bf\u03cd, \u03b7 \u03c4\u03b9\u03bc\u03ae \u03b1\u03c5\u03c4\u03ae \u03b5\u03c0\u03b7\u03c1\u03b5\u03ac\u03b6\u03b5\u03b9 \u03c4\u03bf\u03bd \u03c4\u03c1\u03cc\u03c0\u03bf \u03bc\u03b5 \u03c4\u03bf\u03bd \u03bf\u03c0\u03bf\u03af\u03bf \u03ad\u03bd\u03b1 \u03c6\u03cd\u03bb\u03bb\u03bf \u03bf\u03bb\u03b9\u03c3\u03b8\u03b1\u03af\u03bd\u03b5\u03b9 \u03c0\u03ac\u03bd\u03c9 \u03c3\u03b5 \u03ad\u03bd\u03b1 \u03ac\u03bb\u03bb\u03bf. \u03a4\u03bf <strong data-start=\"1674\" data-end=\"1688\">static COF<\/strong> \u03ba\u03b1\u03b8\u03bf\u03c1\u03af\u03b6\u03b5\u03b9 \u03c4\u03b7 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 \u03c0\u03bf\u03c5 \u03b1\u03c0\u03b1\u03b9\u03c4\u03b5\u03af\u03c4\u03b1\u03b9 \u03b3\u03b9\u03b1 \u03c4\u03b7\u03bd \u03ad\u03bd\u03b1\u03c1\u03be\u03b7 \u03c4\u03b7\u03c2 \u03ba\u03af\u03bd\u03b7\u03c3\u03b7\u03c2, \u03b5\u03bd\u03ce \u03b7 <strong data-start=\"1752\" data-end=\"1767\">\u03ba\u03b9\u03bd\u03b7\u03c4\u03b9\u03ba\u03ae COF<\/strong> \u03bc\u03b5\u03c4\u03c1\u03ac \u03c4\u03b7 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 \u03c0\u03bf\u03c5 \u03b1\u03c0\u03b1\u03b9\u03c4\u03b5\u03af\u03c4\u03b1\u03b9 \u03b3\u03b9\u03b1 \u03c4\u03b7 \u03b4\u03b9\u03b1\u03c4\u03ae\u03c1\u03b7\u03c3\u03b7 \u03c4\u03b7\u03c2 \u03ba\u03af\u03bd\u03b7\u03c3\u03b7\u03c2 \u03c3\u03b5 \u03c3\u03c4\u03b1\u03b8\u03b5\u03c1\u03ae \u03c4\u03b1\u03c7\u03cd\u03c4\u03b7\u03c4\u03b1. \u03a4\u03bf \u03c0\u03c1\u03cc\u03c4\u03c5\u03c0\u03bf ASTM D4917 \u03b5\u03c0\u03b9\u03c4\u03c1\u03ad\u03c0\u03b5\u03b9 \u03ba\u03b1\u03b9 \u03c4\u03b9\u03c2 \u03b4\u03cd\u03bf \u03bc\u03b5\u03c4\u03c1\u03ae\u03c3\u03b5\u03b9\u03c2 \u03bc\u03b5 \u03bf\u03c1\u03b9\u03b6\u03cc\u03bd\u03c4\u03b9\u03b1 \u03ba\u03af\u03bd\u03b7\u03c3\u03b7 \u03bf\u03bb\u03af\u03c3\u03b8\u03b7\u03c3\u03b7\u03c2.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u0395\u03be\u03bf\u03c0\u03bb\u03b9\u03c3\u03bc\u03cc\u03c2 \u03b4\u03bf\u03ba\u03b9\u03bc\u03ae\u03c2 \u03ba\u03b1\u03b9 \u03b6\u03b7\u03c4\u03ae\u03bc\u03b1\u03c4\u03b1 \u03c0\u03c1\u03bf\u03b5\u03c4\u03bf\u03b9\u03bc\u03b1\u03c3\u03af\u03b1\u03c2 \u03b4\u03b5\u03af\u03b3\u03bc\u03b1\u03c4\u03bf\u03c2<\/h2>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<div class=\"ast-oembed-container\" style=\"height: 100%;\"><iframe title=\"\u0394\u03bf\u03ba\u03b9\u03bc\u03ae \u03c3\u03c5\u03bd\u03c4\u03b5\u03bb\u03b5\u03c3\u03c4\u03ae \u03c4\u03c1\u03b9\u03b2\u03ae\u03c2 \u03c7\u03b1\u03c1\u03c4\u03b9\u03bf\u03cd \u03c3\u03b5 \u03b5\u03be\u03ad\u03bb\u03b9\u03be\u03b7\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/Iq-UFiGqF64?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/div>\n<\/div><\/figure>\n\n\n\n<p>\u0393\u03b9\u03b1 \u03c4\u03b7 \u03b4\u03b9\u03b5\u03be\u03b1\u03b3\u03c9\u03b3\u03ae \u03b1\u03be\u03b9\u03cc\u03c0\u03b9\u03c3\u03c4\u03c9\u03bd \u03b4\u03bf\u03ba\u03b9\u03bc\u03ce\u03bd COF \u03c3\u03cd\u03bc\u03c6\u03c9\u03bd\u03b1 \u03bc\u03b5 \u03c4\u03bf ASTM D4917, \u03b5\u03af\u03bd\u03b1\u03b9 \u03b1\u03c0\u03b1\u03c1\u03b1\u03af\u03c4\u03b7\u03c4\u03bf\u03c2 \u03bf \u03b5\u03be\u03b5\u03b9\u03b4\u03b9\u03ba\u03b5\u03c5\u03bc\u03ad\u03bd\u03bf\u03c2 \u03b5\u03be\u03bf\u03c0\u03bb\u03b9\u03c3\u03bc\u03cc\u03c2. A <strong data-start=\"3843\" data-end=\"3877\">\u03b4\u03bf\u03ba\u03b9\u03bc\u03b1\u03c3\u03c4\u03ae\u03c2 \u03c3\u03c4\u03b1\u03b8\u03b5\u03c1\u03bf\u03cd \u03c1\u03c5\u03b8\u03bc\u03bf\u03cd \u03ba\u03af\u03bd\u03b7\u03c3\u03b7\u03c2<\/strong>, \u03b5\u03be\u03bf\u03c0\u03bb\u03b9\u03c3\u03bc\u03ad\u03bd\u03bf \u03bc\u03b5 \u03ba\u03c5\u03c8\u03ad\u03bb\u03b7 \u03c6\u03bf\u03c1\u03c4\u03af\u03bf\u03c5 \u03ba\u03b1\u03b9 \u03b9\u03ba\u03b1\u03bd\u03cc \u03bd\u03b1 \u03ad\u03bb\u03ba\u03b5\u03b9 \u03ad\u03bd\u03b1 \u03ad\u03bb\u03ba\u03b7\u03b8\u03c1\u03bf \u03bc\u03b5 \u03c4\u03b1\u03c7\u03cd\u03c4\u03b7\u03c4\u03b1 150 \u00b1 30 mm\/min, \u03c7\u03c1\u03b7\u03c3\u03b9\u03bc\u03bf\u03c0\u03bf\u03b9\u03b5\u03af\u03c4\u03b1\u03b9 \u03c3\u03c5\u03bd\u03ae\u03b8\u03c9\u03c2.<\/p>\n\n\n\n<p>\u0393\u03b9\u03b1 \u03b1\u03ba\u03c1\u03b9\u03b2\u03ae \u03b1\u03c0\u03bf\u03c4\u03b5\u03bb\u03ad\u03c3\u03bc\u03b1\u03c4\u03b1, \u03c4\u03b1 \u03b4\u03b5\u03af\u03b3\u03bc\u03b1\u03c4\u03b1 \u03b8\u03b1 \u03c0\u03c1\u03ad\u03c0\u03b5\u03b9 \u03bd\u03b1 \u03c0\u03c1\u03bf\u03c0\u03b1\u03c1\u03b1\u03c3\u03ba\u03b5\u03c5\u03ac\u03b6\u03bf\u03bd\u03c4\u03b1\u03b9 \u03c5\u03c0\u03cc \u03c4\u03c5\u03c0\u03b9\u03ba\u03ad\u03c2 \u03b1\u03c4\u03bc\u03bf\u03c3\u03c6\u03b1\u03b9\u03c1\u03b9\u03ba\u03ad\u03c2 \u03c3\u03c5\u03bd\u03b8\u03ae\u03ba\u03b5\u03c2 (\u03c3\u03cd\u03bc\u03c6\u03c9\u03bd\u03b1 \u03bc\u03b5 \u03c4\u03bf TAPPI T402 \u03ae \u03c4\u03bf ASTM D685) \u03ba\u03b1\u03b9 \u03bd\u03b1 \u03c0\u03c1\u03bf\u03b5\u03c4\u03bf\u03b9\u03bc\u03ac\u03b6\u03bf\u03bd\u03c4\u03b1\u03b9 \u03c3\u03b5 \u03b5\u03c5\u03b8\u03c5\u03b3\u03c1\u03ac\u03bc\u03bc\u03b9\u03c3\u03b7 \u03bc\u03b5 \u03c4\u03b7\u03bd \u03ba\u03b1\u03c4\u03b5\u03cd\u03b8\u03c5\u03bd\u03c3\u03b7 \u03c4\u03b7\u03c2 \u03bc\u03b7\u03c7\u03b1\u03bd\u03ae\u03c2 \u03ba\u03b1\u03b9 \u03c4\u03bf\u03bd \u03c0\u03c1\u03bf\u03c3\u03b1\u03bd\u03b1\u03c4\u03bf\u03bb\u03b9\u03c3\u03bc\u03cc \u03c4\u03c9\u03bd \u03ba\u03cc\u03ba\u03ba\u03c9\u03bd.<\/p>\n\n\n\n<p>\u03a3\u03c5\u03bd\u03b9\u03c3\u03c4\u03bf\u03cd\u03bc\u03b5 \u03c4\u03bf <strong data-start=\"4191\" data-end=\"4249\">Cell Instruments COF-01 \u0394\u03bf\u03ba\u03b9\u03bc\u03b1\u03c3\u03c4\u03ae\u03c2 \u03c3\u03c5\u03bd\u03c4\u03b5\u03bb\u03b5\u03c3\u03c4\u03ae \u03c4\u03c1\u03b9\u03b2\u03ae\u03c2<\/strong>, \u03ad\u03bd\u03b1 \u03cc\u03c1\u03b3\u03b1\u03bd\u03bf \u03bf\u03c1\u03b9\u03b6\u03cc\u03bd\u03c4\u03b9\u03bf\u03c5 \u03b5\u03c0\u03b9\u03c0\u03ad\u03b4\u03bf\u03c5 \u03c5\u03c8\u03b7\u03bb\u03ae\u03c2 \u03b1\u03ba\u03c1\u03af\u03b2\u03b5\u03b9\u03b1\u03c2 \u03c3\u03c7\u03b5\u03b4\u03b9\u03b1\u03c3\u03bc\u03ad\u03bd\u03bf \u03bd\u03b1 \u03c0\u03bb\u03b7\u03c1\u03bf\u03af \u03c4\u03b9\u03c2 \u03b1\u03c0\u03b1\u03b9\u03c4\u03ae\u03c3\u03b5\u03b9\u03c2 \u03c4\u03c9\u03bd \u03c0\u03c1\u03bf\u03c4\u03cd\u03c0\u03c9\u03bd ASTM D4917 \u03ba\u03b1\u03b9 ISO 8295. \u0394\u03b9\u03b1\u03b8\u03ad\u03c4\u03b5\u03b9 \u03c8\u03b7\u03c6\u03b9\u03b1\u03ba\u03cc \u03ad\u03bb\u03b5\u03b3\u03c7\u03bf, \u03c1\u03c5\u03b8\u03bc\u03b9\u03b6\u03cc\u03bc\u03b5\u03bd\u03b5\u03c2 \u03b5\u03c0\u03b9\u03bb\u03bf\u03b3\u03ad\u03c2 \u03ad\u03bb\u03ba\u03b7\u03b8\u03c1\u03bf\u03c5 \u03ba\u03b1\u03b9 \u03b1\u03c5\u03c4\u03bf\u03bc\u03b1\u03c4\u03bf\u03c0\u03bf\u03b9\u03b7\u03bc\u03ad\u03bd\u03b7 \u03bc\u03ad\u03c4\u03c1\u03b7\u03c3\u03b7 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7\u03c2 - \u03b5\u03be\u03b1\u03c3\u03c6\u03b1\u03bb\u03af\u03b6\u03bf\u03bd\u03c4\u03b1\u03c2 \u03b1\u03ba\u03c1\u03b9\u03b2\u03ae, \u03b1\u03bd\u03b1\u03c0\u03b1\u03c1\u03b1\u03b3\u03ce\u03b3\u03b9\u03bc\u03b1 \u03b1\u03c0\u03bf\u03c4\u03b5\u03bb\u03ad\u03c3\u03bc\u03b1\u03c4\u03b1 \u03c4\u03cc\u03c3\u03bf \u03b3\u03b9\u03b1 \u03c3\u03c4\u03b1\u03c4\u03b9\u03ba\u03ad\u03c2 \u03cc\u03c3\u03bf \u03ba\u03b1\u03b9 \u03b3\u03b9\u03b1 \u03ba\u03b9\u03bd\u03b7\u03c4\u03b9\u03ba\u03ad\u03c2 \u03b4\u03bf\u03ba\u03b9\u03bc\u03ad\u03c2 COF.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u0395\u03c0\u03b5\u03be\u03ae\u03b3\u03b7\u03c3\u03b7 \u03c4\u03c9\u03bd \u03b4\u03bf\u03ba\u03b9\u03bc\u03ce\u03bd \u03c3\u03c4\u03b1\u03c4\u03b9\u03ba\u03ae\u03c2 \u03ba\u03b1\u03b9 \u03ba\u03b9\u03bd\u03b7\u03c4\u03b9\u03ba\u03ae\u03c2 \u03c4\u03c1\u03b9\u03b2\u03ae\u03c2 \u03c7\u03b1\u03c1\u03c4\u03b9\u03bf\u03cd<\/h2>\n\n\n\n<p>\u0397 \u03b4\u03bf\u03ba\u03b9\u03bc\u03ae \u03c7\u03b1\u03c1\u03c4\u03b9\u03bf\u03cd \u03c3\u03cd\u03bc\u03c6\u03c9\u03bd\u03b1 \u03bc\u03b5 \u03c4\u03bf \u03c0\u03c1\u03cc\u03c4\u03c5\u03c0\u03bf ASTM D4917 \u03c0\u03b5\u03c1\u03b9\u03bb\u03b1\u03bc\u03b2\u03ac\u03bd\u03b5\u03b9 \u03c4\u03b7\u03bd \u03c4\u03bf\u03c0\u03bf\u03b8\u03ad\u03c4\u03b7\u03c3\u03b7 \u03b5\u03bd\u03cc\u03c2 \u03c6\u03cd\u03bb\u03bb\u03bf\u03c5 \u03c7\u03b1\u03c1\u03c4\u03b9\u03bf\u03cd \u03c3\u03b5 \u03bc\u03b9\u03b1 \u03b5\u03c0\u03af\u03c0\u03b5\u03b4\u03b7 \u03bf\u03c1\u03b9\u03b6\u03cc\u03bd\u03c4\u03b9\u03b1 \u03b5\u03c0\u03b9\u03c6\u03ac\u03bd\u03b5\u03b9\u03b1 \u03ba\u03b1\u03b9 \u03c4\u03b7\u03bd \u03c4\u03bf\u03c0\u03bf\u03b8\u03ad\u03c4\u03b7\u03c3\u03b7 \u03b5\u03bd\u03cc\u03c2 \u03ac\u03bb\u03bb\u03bf\u03c5 \u03c0\u03b1\u03bd\u03bf\u03bc\u03bf\u03b9\u03cc\u03c4\u03c5\u03c0\u03bf\u03c5 \u03c6\u03cd\u03bb\u03bb\u03bf\u03c5 \u03b1\u03c0\u03cc \u03c0\u03ac\u03bd\u03c9. \u0388\u03bd\u03b1 \u03ad\u03bb\u03ba\u03b7\u03b8\u03c1\u03bf (\u03c3\u03c5\u03bd\u03ae\u03b8\u03c9\u03c2 \u03bc\u03b5 \u03b5\u03c0\u03ad\u03bd\u03b4\u03c5\u03c3\u03b7 \u03b1\u03c0\u03cc \u03ba\u03b1\u03bf\u03c5\u03c4\u03c3\u03bf\u03cd\u03ba) \u03c4\u03bf\u03c0\u03bf\u03b8\u03b5\u03c4\u03b5\u03af\u03c4\u03b1\u03b9 \u03c0\u03ac\u03bd\u03c9 \u03b1\u03c0\u03cc \u03c4\u03bf \u03b5\u03c0\u03ac\u03bd\u03c9 \u03c6\u03cd\u03bb\u03bb\u03bf. \u039a\u03b1\u03b8\u03ce\u03c2 \u03c4\u03bf \u03ad\u03bb\u03ba\u03b7\u03b8\u03c1\u03bf \u03c4\u03c1\u03b1\u03b2\u03b9\u03ad\u03c4\u03b1\u03b9, \u03bc\u03b5\u03c4\u03c1\u03ac\u03c4\u03b1\u03b9 \u03b7 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 \u03c0\u03bf\u03c5 \u03b1\u03c0\u03b1\u03b9\u03c4\u03b5\u03af\u03c4\u03b1\u03b9 \u03b3\u03b9\u03b1 \u03c4\u03b7\u03bd \u03ad\u03bd\u03b1\u03c1\u03be\u03b7 \u03c4\u03b7\u03c2 \u03ba\u03af\u03bd\u03b7\u03c3\u03b7\u03c2 (\u03c3\u03c4\u03b1\u03c4\u03b9\u03ba\u03ae \u03c4\u03c1\u03b9\u03b2\u03ae) \u03ba\u03b1\u03b9 \u03b7 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 \u03c0\u03bf\u03c5 \u03b1\u03c0\u03b1\u03b9\u03c4\u03b5\u03af\u03c4\u03b1\u03b9 \u03b3\u03b9\u03b1 \u03c4\u03b7 \u03c3\u03c5\u03bd\u03ad\u03c7\u03b9\u03c3\u03b7 \u03c4\u03b7\u03c2 \u03ba\u03af\u03bd\u03b7\u03c3\u03b7\u03c2 (\u03ba\u03b9\u03bd\u03b7\u03c4\u03b9\u03ba\u03ae \u03c4\u03c1\u03b9\u03b2\u03ae).<\/p>\n\n\n\n<p>\u0391\u03c5\u03c4\u03cc <strong data-start=\"2334\" data-end=\"2368\">\u03b4\u03bf\u03ba\u03b9\u03bc\u03ae \u03ba\u03b9\u03bd\u03b7\u03c4\u03b9\u03ba\u03ae\u03c2 \u03c4\u03c1\u03b9\u03b2\u03ae\u03c2 \u03c7\u03b1\u03c1\u03c4\u03b9\u03bf\u03cd<\/strong> \u03ba\u03b1\u03b9 <strong data-start=\"2373\" data-end=\"2406\">\u03b4\u03bf\u03ba\u03b9\u03bc\u03ae \u03c3\u03c4\u03b1\u03c4\u03b9\u03ba\u03ae\u03c2 \u03c4\u03c1\u03b9\u03b2\u03ae\u03c2 \u03c7\u03b1\u03c1\u03c4\u03b9\u03bf\u03cd<\/strong> \u03c0\u03b1\u03c1\u03ad\u03c7\u03b5\u03b9 \u03ba\u03c1\u03af\u03c3\u03b9\u03bc\u03b1 \u03b4\u03b5\u03b4\u03bf\u03bc\u03ad\u03bd\u03b1 \u03b3\u03b9\u03b1 \u03c4\u03b7\u03bd \u03ba\u03b1\u03c4\u03b1\u03bd\u03cc\u03b7\u03c3\u03b7 \u03c4\u03bf\u03c5 \u03b4\u03b9\u03b1\u03c7\u03c9\u03c1\u03b9\u03c3\u03bc\u03bf\u03cd \u03c4\u03c9\u03bd \u03c6\u03cd\u03bb\u03bb\u03c9\u03bd, \u03c4\u03b7\u03c2 \u03c3\u03c5\u03bd\u03bf\u03c7\u03ae\u03c2 \u03c4\u03b7\u03c2 \u03c4\u03c1\u03bf\u03c6\u03bf\u03b4\u03bf\u03c3\u03af\u03b1\u03c2 \u03ba\u03b1\u03b9 \u03c4\u03b7\u03c2 \u03b5\u03c5\u03b8\u03c5\u03b3\u03c1\u03ac\u03bc\u03bc\u03b9\u03c3\u03b7\u03c2 \u03c4\u03b7\u03c2 \u03b5\u03ba\u03c4\u03cd\u03c0\u03c9\u03c3\u03b7\u03c2 \u03c3\u03b5 \u03c3\u03c5\u03c3\u03c4\u03ae\u03bc\u03b1\u03c4\u03b1 \u03c5\u03c8\u03b7\u03bb\u03ae\u03c2 \u03c4\u03b1\u03c7\u03cd\u03c4\u03b7\u03c4\u03b1\u03c2.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u0395\u03c6\u03b1\u03c1\u03bc\u03bf\u03b3\u03ad\u03c2 \u03c4\u03bf\u03c5 ASTM D4917 \u03c3\u03c4\u03b7 \u03b4\u03bf\u03ba\u03b9\u03bc\u03ae COF \u03b3\u03b9\u03b1 \u03b5\u03ba\u03c4\u03c5\u03c0\u03ce\u03c3\u03b5\u03b9\u03c2 \u03ba\u03b1\u03b9 \u03bc\u03b7 \u03b5\u03c0\u03b9\u03c7\u03c1\u03b9\u03c3\u03bc\u03ad\u03bd\u03bf \u03c7\u03b1\u03c1\u03c4\u03af<\/h2>\n\n\n\n<p>\u039f <strong data-start=\"2613\" data-end=\"2640\">\u03b4\u03bf\u03ba\u03b9\u03bc\u03ae \u03c7\u03b1\u03c1\u03c4\u03b9\u03bf\u03cd \u03b5\u03ba\u03c4\u03cd\u03c0\u03c9\u03c3\u03b7\u03c2 COF<\/strong> \u03b5\u03af\u03bd\u03b1\u03b9 \u03b9\u03b4\u03b9\u03b1\u03af\u03c4\u03b5\u03c1\u03b1 \u03c3\u03b7\u03bc\u03b1\u03bd\u03c4\u03b9\u03ba\u03ae \u03c3\u03b5 \u03c0\u03b5\u03c1\u03b9\u03b2\u03ac\u03bb\u03bb\u03bf\u03bd\u03c4\u03b1 \u03b1\u03af\u03b8\u03bf\u03c5\u03c3\u03b1\u03c2 \u03b5\u03ba\u03c4\u03cd\u03c0\u03c9\u03c3\u03b7\u03c2, \u03cc\u03c0\u03bf\u03c5 \u03b7 \u03c3\u03c5\u03bd\u03bf\u03c7\u03ae \u03c4\u03b7\u03c2 \u03c4\u03c1\u03b9\u03b2\u03ae\u03c2 \u03b5\u03be\u03b1\u03c3\u03c6\u03b1\u03bb\u03af\u03b6\u03b5\u03b9 \u03b1\u03ba\u03c1\u03af\u03b2\u03b5\u03b9\u03b1 \u03c3\u03c4\u03b7\u03bd \u03c4\u03c1\u03bf\u03c6\u03bf\u03b4\u03bf\u03c3\u03af\u03b1 \u03b5\u03bd\u03cc\u03c2 \u03c6\u03cd\u03bb\u03bb\u03bf\u03c5 \u03ba\u03b1\u03b9 \u03bc\u03b5\u03b9\u03ce\u03bd\u03b5\u03b9 \u03c4\u03b9\u03c2 \u03b5\u03bc\u03c0\u03bb\u03bf\u03ba\u03ad\u03c2 \u03ae \u03c4\u03b9\u03c2 \u03bb\u03b1\u03bd\u03b8\u03b1\u03c3\u03bc\u03ad\u03bd\u03b5\u03c2 \u03c4\u03c1\u03bf\u03c6\u03bf\u03b4\u03bf\u03c3\u03af\u03b5\u03c2. \u039f\u03bc\u03bf\u03af\u03c9\u03c2, <strong data-start=\"2799\" data-end=\"2826\">\u03b4\u03bf\u03ba\u03b9\u03bc\u03ae COF \u03b3\u03b9\u03b1 \u03c7\u03b1\u03c1\u03c4\u03af \u03c7\u03c9\u03c1\u03af\u03c2 \u03b5\u03c0\u03b9\u03ba\u03ac\u03bb\u03c5\u03c8\u03b7<\/strong> \u03b2\u03bf\u03b7\u03b8\u03ac \u03c4\u03bf\u03c5\u03c2 \u03ba\u03b1\u03c4\u03b1\u03c3\u03ba\u03b5\u03c5\u03b1\u03c3\u03c4\u03ad\u03c2 \u03c7\u03b1\u03c1\u03c4\u03b9\u03bf\u03cd \u03bd\u03b1 \u03b5\u03c0\u03b1\u03bb\u03b7\u03b8\u03b5\u03cd\u03bf\u03c5\u03bd \u03c4\u03b9\u03c2 \u03c0\u03c1\u03bf\u03b4\u03b9\u03b1\u03b3\u03c1\u03b1\u03c6\u03ad\u03c2 \u03c4\u03bf\u03c5 \u03c0\u03c1\u03bf\u03ca\u03cc\u03bd\u03c4\u03bf\u03c2 \u03c0\u03c1\u03b9\u03bd \u03b1\u03c0\u03cc \u03c4\u03b7 \u03bc\u03b5\u03c4\u03b1\u03c4\u03c1\u03bf\u03c0\u03ae \u03ae \u03c4\u03b7\u03bd \u03c0\u03b1\u03c1\u03ac\u03b4\u03bf\u03c3\u03b7.<\/p>\n\n\n\n<p>\u039a\u03b1\u03b9 \u03c3\u03c4\u03b9\u03c2 \u03b4\u03cd\u03bf \u03b5\u03c6\u03b1\u03c1\u03bc\u03bf\u03b3\u03ad\u03c2, \u03c4\u03bf ASTM D4917 \u03c0\u03c1\u03bf\u03c3\u03c6\u03ad\u03c1\u03b5\u03b9 \u03bc\u03b9\u03b1 \u03c4\u03c5\u03c0\u03bf\u03c0\u03bf\u03b9\u03b7\u03bc\u03ad\u03bd\u03b7 \u03c0\u03c1\u03bf\u03c3\u03ad\u03b3\u03b3\u03b9\u03c3\u03b7 \u03c0\u03bf\u03c5 \u03bc\u03b5\u03b9\u03ce\u03bd\u03b5\u03b9 \u03c4\u03b7 \u03bc\u03b5\u03c4\u03b1\u03b2\u03bb\u03b7\u03c4\u03cc\u03c4\u03b7\u03c4\u03b1 \u03c4\u03c9\u03bd \u03b4\u03bf\u03ba\u03b9\u03bc\u03ce\u03bd \u03ba\u03b1\u03b9 \u03b5\u03be\u03b1\u03c3\u03c6\u03b1\u03bb\u03af\u03b6\u03b5\u03b9 \u03c4\u03b7 \u03c3\u03c5\u03bc\u03bc\u03cc\u03c1\u03c6\u03c9\u03c3\u03b7 \u03bc\u03b5 \u03c4\u03b1 \u03c0\u03c1\u03cc\u03c4\u03c5\u03c0\u03b1 \u03c0\u03bf\u03b9\u03cc\u03c4\u03b7\u03c4\u03b1\u03c2 \u03c4\u03bf\u03c5 \u03ba\u03bb\u03ac\u03b4\u03bf\u03c5.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u0393\u03b9\u03b1\u03c4\u03af \u03bd\u03b1 \u03c7\u03c1\u03b7\u03c3\u03b9\u03bc\u03bf\u03c0\u03bf\u03b9\u03ae\u03c3\u03b5\u03c4\u03b5 \u03c4\u03bf ASTM D4917 \u03b1\u03bd\u03c4\u03af \u03ac\u03bb\u03bb\u03c9\u03bd \u03bc\u03b5\u03b8\u03cc\u03b4\u03c9\u03bd;<\/h2>\n\n\n\n<p>\u03a3\u03b5 \u03b1\u03bd\u03c4\u03af\u03b8\u03b5\u03c3\u03b7 \u03bc\u03b5 \u03c4\u03b9\u03c2 \u03bc\u03b5\u03b8\u03cc\u03b4\u03bf\u03c5\u03c2 \u03ba\u03b5\u03ba\u03bb\u03b9\u03bc\u03ad\u03bd\u03bf\u03c5 \u03b5\u03c0\u03b9\u03c0\u03ad\u03b4\u03bf\u03c5 (\u03cc\u03c0\u03c9\u03c2 \u03b7 ASTM D4918), \u03bf\u03b9 \u03bf\u03c0\u03bf\u03af\u03b5\u03c2 \u03b4\u03b5\u03bd \u03bc\u03c0\u03bf\u03c1\u03bf\u03cd\u03bd \u03bd\u03b1 \u03c0\u03c1\u03bf\u03c3\u03b4\u03b9\u03bf\u03c1\u03af\u03c3\u03bf\u03c5\u03bd \u03c4\u03b7\u03bd \u03ba\u03b9\u03bd\u03b7\u03c4\u03b9\u03ba\u03ae COF, \u03b7 ASTM D4917 \u03b5\u03c0\u03b9\u03c4\u03c1\u03ad\u03c0\u03b5\u03b9 \u03c4\u03b7\u03bd \u03b1\u03ba\u03c1\u03b9\u03b2\u03ae \u03b1\u03be\u03b9\u03bf\u03bb\u03cc\u03b3\u03b7\u03c3\u03b7 \u03c4\u03cc\u03c3\u03bf \u03c4\u03b7\u03c2 \u03c3\u03c4\u03b1\u03c4\u03b9\u03ba\u03ae\u03c2 \u03cc\u03c3\u03bf \u03ba\u03b1\u03b9 \u03c4\u03b7\u03c2 \u03ba\u03b9\u03bd\u03b7\u03c4\u03b9\u03ba\u03ae\u03c2 \u03c4\u03c1\u03b9\u03b2\u03ae\u03c2 \u03bc\u03ad\u03c3\u03c9 \u03bf\u03c1\u03b9\u03b6\u03cc\u03bd\u03c4\u03b9\u03b1\u03c2 \u03ba\u03af\u03bd\u03b7\u03c3\u03b7\u03c2. \u0395\u03c0\u03b9\u03c0\u03bb\u03ad\u03bf\u03bd, \u03b5\u03bb\u03b1\u03c7\u03b9\u03c3\u03c4\u03bf\u03c0\u03bf\u03b9\u03b5\u03af \u03c4\u03b7 \u03c6\u03b8\u03bf\u03c1\u03ac \u03bb\u03cc\u03b3\u03c9 \u03bf\u03bb\u03af\u03c3\u03b8\u03b7\u03c3\u03b7\u03c2, \u03b4\u03bf\u03ba\u03b9\u03bc\u03ac\u03b6\u03bf\u03bd\u03c4\u03b1\u03c2 \u03bc\u03cc\u03bd\u03bf \u03c4\u03b7\u03bd \u03c0\u03c1\u03ce\u03c4\u03b7 \u03b5\u03c0\u03b1\u03c6\u03ae, \u03b7 \u03bf\u03c0\u03bf\u03af\u03b1 \u03c0\u03c1\u03bf\u03c3\u03bf\u03bc\u03bf\u03b9\u03ce\u03bd\u03b5\u03b9 \u03ba\u03b1\u03bb\u03cd\u03c4\u03b5\u03c1\u03b1 \u03c4\u03b1 \u03c0\u03c1\u03b1\u03b3\u03bc\u03b1\u03c4\u03b9\u03ba\u03ac \u03c3\u03b5\u03bd\u03ac\u03c1\u03b9\u03b1 \u03c7\u03b5\u03b9\u03c1\u03b9\u03c3\u03bc\u03bf\u03cd \u03c6\u03cd\u03bb\u03bb\u03c9\u03bd.<\/p>\n\n\n\n<p>\u0393\u03b9\u03b1 \u03c0\u03b9\u03bf \u03ac\u03ba\u03b1\u03bc\u03c0\u03c4\u03b1 \u03c5\u03bb\u03b9\u03ba\u03ac, \u03cc\u03c0\u03c9\u03c2 \u03c4\u03bf \u03ba\u03c5\u03bc\u03b1\u03c4\u03bf\u03b5\u03b9\u03b4\u03ad\u03c2 \u03c7\u03b1\u03c1\u03c4\u03cc\u03bd\u03b9, \u03b5\u03af\u03bd\u03b1\u03b9 \u03c0\u03b9\u03bf \u03ba\u03b1\u03c4\u03ac\u03bb\u03bb\u03b7\u03bb\u03bf \u03c4\u03bf ASTM D4521 \u03ae \u03c4\u03bf ASTM D3247. \u0391\u03bb\u03bb\u03ac \u03b3\u03b9\u03b1 <strong data-start=\"3557\" data-end=\"3592\">\u03bb\u03b5\u03c0\u03c4\u03ac, \u03b5\u03cd\u03ba\u03b1\u03bc\u03c0\u03c4\u03b1, \u03bc\u03b7 \u03b5\u03c0\u03b9\u03c7\u03c1\u03b9\u03c3\u03bc\u03ad\u03bd\u03b1 \u03c7\u03b1\u03c1\u03c4\u03b9\u03ac<\/strong>, D4917 \u03b5\u03af\u03bd\u03b1\u03b9 \u03b7 \u03bc\u03ad\u03b8\u03bf\u03b4\u03bf\u03c2 \u03c0\u03bf\u03c5 \u03c3\u03c5\u03bd\u03b9\u03c3\u03c4\u03ac\u03c4\u03b1\u03b9 \u03b1\u03c0\u03cc \u03c4\u03bf\u03c5\u03c2 \u03c0\u03b5\u03c1\u03b9\u03c3\u03c3\u03cc\u03c4\u03b5\u03c1\u03bf\u03c5\u03c2 \u03bc\u03b5\u03c4\u03b1\u03c4\u03c1\u03bf\u03c0\u03b5\u03af\u03c2 \u03c7\u03b1\u03c1\u03c4\u03b9\u03bf\u03cd \u03ba\u03b1\u03b9 \u03c4\u03b1 \u03b5\u03c1\u03b3\u03b1\u03c3\u03c4\u03ae\u03c1\u03b9\u03b1 \u03c3\u03c5\u03c3\u03ba\u03b5\u03c5\u03b1\u03c3\u03af\u03b1\u03c2.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u0395\u03c0\u03b9\u03bb\u03bf\u03b3\u03ae \u03c4\u03bf\u03c5 \u03c3\u03c9\u03c3\u03c4\u03bf\u03cd \u03b5\u03bb\u03b5\u03b3\u03ba\u03c4\u03ae \u03c3\u03c5\u03bd\u03c4\u03b5\u03bb\u03b5\u03c3\u03c4\u03ae \u03c4\u03c1\u03b9\u03b2\u03ae\u03c2<\/h2>\n\n\n\n<p>\u0393\u03b9\u03b1 \u03bd\u03b1 \u03c3\u03c5\u03bc\u03bc\u03bf\u03c1\u03c6\u03c9\u03b8\u03b5\u03af\u03c4\u03b5 \u03bc\u03b5 \u03c4\u03bf \u03c0\u03c1\u03cc\u03c4\u03c5\u03c0\u03bf ASTM D4917 \u03ba\u03b1\u03b9 \u03bd\u03b1 \u03b5\u03c0\u03b9\u03c4\u03cd\u03c7\u03b5\u03c4\u03b5 \u03b1\u03ba\u03c1\u03b9\u03b2\u03ae \u03b1\u03c0\u03bf\u03c4\u03b5\u03bb\u03ad\u03c3\u03bc\u03b1\u03c4\u03b1 COF \u03c3\u03b5 \u03c7\u03b1\u03c1\u03c4\u03af, \u03c3\u03c5\u03bd\u03b9\u03c3\u03c4\u03bf\u03cd\u03bc\u03b5 \u03c4\u03bf <strong data-start=\"4239\" data-end=\"4270\">\u039a\u03c5\u03c4\u03c4\u03b1\u03c1\u03b9\u03ba\u03ac \u03cc\u03c1\u03b3\u03b1\u03bd\u03b1 <a href=\"https:\/\/www.packqc.com\/el\/product\/coefficient-of-friction-testing-equipment\/\">COF-01<\/a> \u0394\u03bf\u03ba\u03b9\u03bc\u03b1\u03c3\u03c4\u03ae\u03c2<\/strong>, \u03c4\u03bf \u03bf\u03c0\u03bf\u03af\u03bf \u03b5\u03af\u03bd\u03b1\u03b9 \u03b2\u03b5\u03bb\u03c4\u03b9\u03c3\u03c4\u03bf\u03c0\u03bf\u03b9\u03b7\u03bc\u03ad\u03bd\u03bf \u03b3\u03b9\u03b1:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u03bf\u03c1\u03b9\u03b6\u03cc\u03bd\u03c4\u03b9\u03b5\u03c2 \u03b4\u03bf\u03ba\u03b9\u03bc\u03ad\u03c2<\/li>\n\n\n\n<li>\u039c\u03b5\u03c4\u03c1\u03ae\u03c3\u03b5\u03b9\u03c2 \u03c3\u03c4\u03b1\u03c4\u03b9\u03ba\u03ae\u03c2 \u03ba\u03b1\u03b9 \u03ba\u03b9\u03bd\u03b7\u03c4\u03b9\u03ba\u03ae\u03c2 \u03c4\u03c1\u03b9\u03b2\u03ae\u03c2<\/li>\n\n\n\n<li>\u03a0\u03c1\u03bf\u03c3\u03b1\u03c1\u03bc\u03bf\u03c3\u03bc\u03ad\u03bd\u03bf\u03c2 \u03c3\u03c7\u03b5\u03b4\u03b9\u03b1\u03c3\u03bc\u03cc\u03c2 \u03b5\u03be\u03b1\u03c1\u03c4\u03b7\u03bc\u03ac\u03c4\u03c9\u03bd \u03b3\u03b9\u03b1 \u03bc\u03b7 \u03b5\u03c0\u03b9\u03ba\u03b1\u03bb\u03c5\u03bc\u03bc\u03ad\u03bd\u03b1 \u03ba\u03b1\u03b9 \u03b5\u03b9\u03b4\u03b9\u03ba\u03ac \u03c7\u03b1\u03c1\u03c4\u03b9\u03ac<\/li>\n\n\n\n<li>\u0388\u03be\u03c5\u03c0\u03bd\u03b7 \u03ba\u03b1\u03c4\u03b1\u03b3\u03c1\u03b1\u03c6\u03ae \u03b4\u03b5\u03b4\u03bf\u03bc\u03ad\u03bd\u03c9\u03bd\u00a0<\/li>\n<\/ul>\n\n\n\n<p>\u03a5\u03c0\u03bf\u03c3\u03c4\u03b7\u03c1\u03b9\u03b6\u03cc\u03bc\u03b5\u03bd\u03bf\u03b9 \u03b1\u03c0\u03cc \u03b9\u03c3\u03c7\u03c5\u03c1\u03ae \u03bc\u03b7\u03c7\u03b1\u03bd\u03b9\u03ba\u03ae \u03c5\u03c0\u03bf\u03c3\u03c4\u03ae\u03c1\u03b9\u03be\u03b7 \u03ba\u03b1\u03b9 \u03c5\u03c0\u03bf\u03c3\u03c4\u03ae\u03c1\u03b9\u03be\u03b7 \u03b5\u03c6\u03b1\u03c1\u03bc\u03bf\u03b3\u03ce\u03bd, \u03bf\u03b9 \u03b4\u03bf\u03ba\u03b9\u03bc\u03b1\u03c3\u03c4\u03ad\u03c2 \u03c4\u03c1\u03b9\u03b2\u03ae\u03c2 Cell Instruments \u03b5\u03be\u03b1\u03c3\u03c6\u03b1\u03bb\u03af\u03b6\u03bf\u03c5\u03bd \u03b1\u03ba\u03c1\u03af\u03b2\u03b5\u03b9\u03b1 \u03ba\u03b1\u03b9 \u03b5\u03c0\u03b1\u03bd\u03b1\u03bb\u03b7\u03c8\u03b9\u03bc\u03cc\u03c4\u03b7\u03c4\u03b1 \u03c3\u03b5 \u03b4\u03b9\u03ac\u03c6\u03bf\u03c1\u03b1 \u03c5\u03c0\u03bf\u03c3\u03c4\u03c1\u03ce\u03bc\u03b1\u03c4\u03b1 \u03c7\u03b1\u03c1\u03c4\u03b9\u03bf\u03cd.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u0395\u03c0\u03b9\u03ba\u03bf\u03b9\u03bd\u03c9\u03bd\u03ae\u03c3\u03c4\u03b5 \u03bc\u03b1\u03b6\u03af \u03bc\u03b1\u03c2 \u039b\u03cd\u03c3\u03b7 \u03b4\u03bf\u03ba\u03b9\u03bc\u03ce\u03bd ASTM D4917 <\/h2>\n\n\n\n<p>\u03a4\u03b1 \u03c7\u03b1\u03c1\u03b1\u03ba\u03c4\u03b7\u03c1\u03b9\u03c3\u03c4\u03b9\u03ba\u03ac \u03c4\u03c1\u03b9\u03b2\u03ae\u03c2 \u03c4\u03c9\u03bd \u03c5\u03bb\u03b9\u03ba\u03ce\u03bd \u03c7\u03b1\u03c1\u03c4\u03b9\u03bf\u03cd \u03b5\u03c0\u03b7\u03c1\u03b5\u03ac\u03b6\u03bf\u03c5\u03bd \u03c3\u03b7\u03bc\u03b1\u03bd\u03c4\u03b9\u03ba\u03ac \u03c4\u03b7\u03bd \u03b1\u03c0\u03cc\u03b4\u03bf\u03c3\u03b7 \u03c3\u03c4\u03b9\u03c2 \u03b5\u03c1\u03b3\u03b1\u03c3\u03af\u03b5\u03c2 \u03b5\u03ba\u03c4\u03cd\u03c0\u03c9\u03c3\u03b7\u03c2, \u03c3\u03c5\u03c3\u03ba\u03b5\u03c5\u03b1\u03c3\u03af\u03b1\u03c2 \u03ba\u03b1\u03b9 \u03bc\u03b5\u03c4\u03b1\u03c0\u03bf\u03af\u03b7\u03c3\u03b7\u03c2. <strong data-start=\"5267\" data-end=\"5281\">ASTM D4917<\/strong> \u03c0\u03b1\u03c1\u03ad\u03c7\u03b5\u03b9 \u03ad\u03bd\u03b1 \u03c4\u03c5\u03c0\u03bf\u03c0\u03bf\u03b9\u03b7\u03bc\u03ad\u03bd\u03bf, \u03b1\u03be\u03b9\u03cc\u03c0\u03b9\u03c3\u03c4\u03bf \u03c0\u03bb\u03b1\u03af\u03c3\u03b9\u03bf \u03b3\u03b9\u03b1 \u03c4\u03b7 \u03bc\u03ad\u03c4\u03c1\u03b7\u03c3\u03b7 \u03c4\u03cc\u03c3\u03bf \u03c4\u03b7\u03c2 \u03c3\u03c4\u03b1\u03c4\u03b9\u03ba\u03ae\u03c2 \u03cc\u03c3\u03bf \u03ba\u03b1\u03b9 \u03c4\u03b7\u03c2 \u03ba\u03b9\u03bd\u03b7\u03c4\u03b9\u03ba\u03ae\u03c2 \u03c4\u03c1\u03b9\u03b2\u03ae\u03c2 \u03c4\u03bf\u03c5 \u03bc\u03b7 \u03b5\u03c0\u03b9\u03ba\u03b1\u03bb\u03c5\u03bc\u03bc\u03ad\u03bd\u03bf\u03c5 \u03c7\u03b1\u03c1\u03c4\u03b9\u03bf\u03cd \u03b3\u03c1\u03b1\u03c6\u03ae\u03c2 \u03ba\u03b1\u03b9 \u03b5\u03ba\u03c4\u03cd\u03c0\u03c9\u03c3\u03b7\u03c2. \u039c\u03b5 \u03b1\u03ba\u03c1\u03b9\u03b2\u03ae \u03cc\u03c1\u03b3\u03b1\u03bd\u03b1 \u03cc\u03c0\u03c9\u03c2 \u03c4\u03bf <strong data-start=\"5448\" data-end=\"5478\">COF-01 \u03b1\u03c0\u03cc <a href=\"https:\/\/www.packqc.com\/el\/\">\u039a\u03c5\u03c4\u03c4\u03b1\u03c1\u03b9\u03ba\u03ac \u03cc\u03c1\u03b3\u03b1\u03bd\u03b1<\/a><\/strong>, \u03bf\u03b9 \u03b5\u03c0\u03b1\u03b3\u03b3\u03b5\u03bb\u03bc\u03b1\u03c4\u03af\u03b5\u03c2 \u03c4\u03b7\u03c2 \u03c0\u03bf\u03b9\u03cc\u03c4\u03b7\u03c4\u03b1\u03c2 \u03bc\u03c0\u03bf\u03c1\u03bf\u03cd\u03bd \u03bd\u03b1 \u03b5\u03ba\u03c4\u03b5\u03bb\u03bf\u03cd\u03bd \u03bc\u03b5 \u03b1\u03c5\u03c4\u03bf\u03c0\u03b5\u03c0\u03bf\u03af\u03b8\u03b7\u03c3\u03b7 \u03b4\u03bf\u03ba\u03b9\u03bc\u03ad\u03c2, \u03bd\u03b1 \u03b5\u03c1\u03bc\u03b7\u03bd\u03b5\u03cd\u03bf\u03c5\u03bd \u03c4\u03b1 \u03b1\u03c0\u03bf\u03c4\u03b5\u03bb\u03ad\u03c3\u03bc\u03b1\u03c4\u03b1 \u03ba\u03b1\u03b9 \u03bd\u03b1 \u03b5\u03c6\u03b1\u03c1\u03bc\u03cc\u03b6\u03bf\u03c5\u03bd \u03b2\u03b5\u03bb\u03c4\u03b9\u03ce\u03c3\u03b5\u03b9\u03c2.<\/p>\n\n\n\n<p>\u0395\u03af\u03c4\u03b5 \u03b4\u03bf\u03ba\u03b9\u03bc\u03ac\u03b6\u03b5\u03c4\u03b5 \u03b3\u03b9\u03b1 <strong data-start=\"5608\" data-end=\"5634\">\u03ba\u03b9\u03bd\u03b7\u03c4\u03b9\u03ba\u03ae \u03c4\u03c1\u03b9\u03b2\u03ae \u03c7\u03b1\u03c1\u03c4\u03b9\u03bf\u03cd<\/strong>, <strong data-start=\"5636\" data-end=\"5655\">\u03c3\u03c4\u03b1\u03c4\u03b9\u03ba\u03ae \u03c4\u03c1\u03b9\u03b2\u03ae<\/strong>, <strong data-start=\"5657\" data-end=\"5679\">\u03c7\u03b1\u03c1\u03c4\u03af \u03b5\u03ba\u03c4\u03cd\u03c0\u03c9\u03c3\u03b7\u03c2 COF<\/strong>, \u03ae \u03c4\u03b7 \u03b4\u03b9\u03b5\u03bd\u03ad\u03c1\u03b3\u03b5\u03b9\u03b1 <strong data-start=\"5698\" data-end=\"5725\">\u03b4\u03bf\u03ba\u03b9\u03bc\u03ae COF \u03b3\u03b9\u03b1 \u03c7\u03b1\u03c1\u03c4\u03af \u03c7\u03c9\u03c1\u03af\u03c2 \u03b5\u03c0\u03b9\u03ba\u03ac\u03bb\u03c5\u03c8\u03b7<\/strong>, \u03b7 \u03ba\u03b1\u03c4\u03b1\u03bd\u03cc\u03b7\u03c3\u03b7 \u03ba\u03b1\u03b9 \u03b7 \u03b5\u03c6\u03b1\u03c1\u03bc\u03bf\u03b3\u03ae \u03c4\u03bf\u03c5 ASTM D4917 \u03b4\u03b9\u03b1\u03c3\u03c6\u03b1\u03bb\u03af\u03b6\u03b5\u03b9 \u03cc\u03c4\u03b9 \u03c4\u03b1 \u03b1\u03c0\u03bf\u03c4\u03b5\u03bb\u03ad\u03c3\u03bc\u03b1\u03c4\u03ac \u03c3\u03b1\u03c2 \u03b5\u03af\u03bd\u03b1\u03b9 \u03bf\u03c5\u03c3\u03b9\u03b1\u03c3\u03c4\u03b9\u03ba\u03ac, \u03b1\u03bd\u03b1\u03c0\u03b1\u03c1\u03b1\u03b3\u03ce\u03b3\u03b9\u03bc\u03b1 \u03ba\u03b1\u03b9 \u03b5\u03c5\u03b8\u03c5\u03b3\u03c1\u03b1\u03bc\u03bc\u03b9\u03c3\u03bc\u03ad\u03bd\u03b1 \u03bc\u03b5 \u03c4\u03b1 \u03c0\u03b1\u03b3\u03ba\u03cc\u03c3\u03bc\u03b9\u03b1 \u03c0\u03c1\u03cc\u03c4\u03c5\u03c0\u03b1.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u03a3\u03c5\u03c7\u03bd\u03ad\u03c2 \u03b5\u03c1\u03c9\u03c4\u03ae\u03c3\u03b5\u03b9\u03c2<\/h2>\n\n\n\n<p><a tabindex=\"0\">1. \u03a4\u03b9 \u03bc\u03b5\u03c4\u03c1\u03ac\u03b5\u03b9 \u03c4\u03bf ASTM D4917;<\/a><br>\u03a4\u03bf \u03c0\u03c1\u03cc\u03c4\u03c5\u03c0\u03bf ASTM D4917 \u03bc\u03b5\u03c4\u03c1\u03ac \u03c4\u03bf\u03bd \u03c3\u03c5\u03bd\u03c4\u03b5\u03bb\u03b5\u03c3\u03c4\u03ae \u03c3\u03c4\u03b1\u03c4\u03b9\u03ba\u03ae\u03c2 \u03ba\u03b1\u03b9 \u03ba\u03b9\u03bd\u03b7\u03c4\u03b9\u03ba\u03ae\u03c2 \u03c4\u03c1\u03b9\u03b2\u03ae\u03c2 \u03c4\u03bf\u03c5 \u03bc\u03b7 \u03b5\u03c0\u03b9\u03ba\u03b1\u03bb\u03c5\u03bc\u03bc\u03ad\u03bd\u03bf\u03c5 \u03c7\u03b1\u03c1\u03c4\u03b9\u03bf\u03cd \u03b3\u03c1\u03b1\u03c6\u03ae\u03c2 \u03ba\u03b1\u03b9 \u03b5\u03ba\u03c4\u03cd\u03c0\u03c9\u03c3\u03b7\u03c2 \u03c7\u03c1\u03b7\u03c3\u03b9\u03bc\u03bf\u03c0\u03bf\u03b9\u03ce\u03bd\u03c4\u03b1\u03c2 \u03c4\u03b7 \u03bc\u03ad\u03b8\u03bf\u03b4\u03bf \u03c4\u03bf\u03c5 \u03bf\u03c1\u03b9\u03b6\u03cc\u03bd\u03c4\u03b9\u03bf\u03c5 \u03b5\u03c0\u03b9\u03c0\u03ad\u03b4\u03bf\u03c5.<\/p>\n\n\n\n<p><a tabindex=\"0\">2. \u0393\u03b9\u03b1\u03c4\u03af \u03b5\u03af\u03bd\u03b1\u03b9 \u03c3\u03b7\u03bc\u03b1\u03bd\u03c4\u03b9\u03ba\u03ae \u03b7 \u03b4\u03bf\u03ba\u03b9\u03bc\u03ae \u03c4\u03c1\u03b9\u03b2\u03ae\u03c2 \u03b3\u03b9\u03b1 \u03c4\u03b1 \u03c0\u03c1\u03bf\u03ca\u03cc\u03bd\u03c4\u03b1 \u03c7\u03b1\u03c1\u03c4\u03b9\u03bf\u03cd;<\/a><br>\u0397 \u03c4\u03c1\u03b9\u03b2\u03ae \u03b5\u03c0\u03b7\u03c1\u03b5\u03ac\u03b6\u03b5\u03b9 \u03c4\u03b7\u03bd \u03b1\u03be\u03b9\u03bf\u03c0\u03b9\u03c3\u03c4\u03af\u03b1 \u03c4\u03b7\u03c2 \u03c4\u03c1\u03bf\u03c6\u03bf\u03b4\u03bf\u03c3\u03af\u03b1\u03c2 \u03c3\u03c4\u03bf\u03c5\u03c2 \u03b5\u03ba\u03c4\u03c5\u03c0\u03c9\u03c4\u03ad\u03c2 \u03ba\u03b1\u03b9 \u03c4\u03b1 \u03c6\u03c9\u03c4\u03bf\u03b1\u03bd\u03c4\u03b9\u03b3\u03c1\u03b1\u03c6\u03b9\u03ba\u03ac \u03bc\u03b7\u03c7\u03b1\u03bd\u03ae\u03bc\u03b1\u03c4\u03b1 \u03ba\u03b1\u03b9 \u03b5\u03be\u03b1\u03c3\u03c6\u03b1\u03bb\u03af\u03b6\u03b5\u03b9 \u03c4\u03bf\u03bd \u03c3\u03c9\u03c3\u03c4\u03cc \u03c7\u03b5\u03b9\u03c1\u03b9\u03c3\u03bc\u03cc \u03c3\u03c4\u03b1 \u03bc\u03b7\u03c7\u03b1\u03bd\u03ae\u03bc\u03b1\u03c4\u03b1 \u03bc\u03b5\u03c4\u03b1\u03c0\u03bf\u03af\u03b7\u03c3\u03b7\u03c2 \u03ba\u03b1\u03b9 \u03c3\u03c5\u03c3\u03ba\u03b5\u03c5\u03b1\u03c3\u03af\u03b1\u03c2.<\/p>\n\n\n\n<p><a tabindex=\"0\">3. \u03a0\u03ce\u03c2 \u03b4\u03b9\u03b1\u03c6\u03ad\u03c1\u03b5\u03b9 \u03b7 \u03c3\u03c4\u03b1\u03c4\u03b9\u03ba\u03ae COF \u03b1\u03c0\u03cc \u03c4\u03b7\u03bd \u03ba\u03b9\u03bd\u03b7\u03c4\u03b9\u03ba\u03ae COF;<\/a><br>\u0397 \u03c3\u03c4\u03b1\u03c4\u03b9\u03ba\u03ae COF \u03bc\u03b5\u03c4\u03c1\u03ac \u03c4\u03b7 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 \u03b3\u03b9\u03b1 \u03c4\u03b7\u03bd \u03ad\u03bd\u03b1\u03c1\u03be\u03b7 \u03c4\u03b7\u03c2 \u03ba\u03af\u03bd\u03b7\u03c3\u03b7\u03c2 \u03bc\u03b5\u03c4\u03b1\u03be\u03cd \u03b4\u03cd\u03bf \u03b5\u03c0\u03b9\u03c6\u03b1\u03bd\u03b5\u03b9\u03ce\u03bd, \u03b5\u03bd\u03ce \u03b7 \u03ba\u03b9\u03bd\u03b7\u03c4\u03b9\u03ba\u03ae COF \u03bc\u03b5\u03c4\u03c1\u03ac \u03c4\u03b7 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 \u03b3\u03b9\u03b1 \u03c4\u03b7 \u03c3\u03c5\u03bd\u03ad\u03c7\u03b9\u03c3\u03b7 \u03c4\u03b7\u03c2 \u03ba\u03af\u03bd\u03b7\u03c3\u03b7\u03c2.<\/p>\n\n\n\n<p><a tabindex=\"0\">4. \u039c\u03c0\u03bf\u03c1\u03b5\u03af \u03bd\u03b1 <\/a><a href=\"https:\/\/store.astm.org\/d4917-97r07e01.html\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">ASTM D4917<\/a><a tabindex=\"0\"> \u03bd\u03b1 \u03c7\u03c1\u03b7\u03c3\u03b9\u03bc\u03bf\u03c0\u03bf\u03b9\u03b7\u03b8\u03b5\u03af \u03b3\u03b9\u03b1 \u03b5\u03c0\u03b9\u03c7\u03c1\u03b9\u03c3\u03bc\u03ad\u03bd\u03b1 \u03ae \u03b5\u03b9\u03b4\u03b9\u03ba\u03ac \u03c7\u03b1\u03c1\u03c4\u03b9\u03ac;<\/a><br>\u0391\u03bd \u03ba\u03b1\u03b9 \u03ad\u03c7\u03b5\u03b9 \u03b2\u03b5\u03bb\u03c4\u03b9\u03c3\u03c4\u03bf\u03c0\u03bf\u03b9\u03b7\u03b8\u03b5\u03af \u03b3\u03b9\u03b1 \u03c7\u03b1\u03c1\u03c4\u03b9\u03ac \u03b3\u03c1\u03b1\u03c6\u03ae\u03c2 \u03ba\u03b1\u03b9 \u03b5\u03ba\u03c4\u03cd\u03c0\u03c9\u03c3\u03b7\u03c2 \u03c7\u03c9\u03c1\u03af\u03c2 \u03b5\u03c0\u03b9\u03ba\u03ac\u03bb\u03c5\u03c8\u03b7, \u03c4\u03bf ASTM D4917 \u03bc\u03c0\u03bf\u03c1\u03b5\u03af \u03bd\u03b1 \u03c7\u03c1\u03b7\u03c3\u03b9\u03bc\u03bf\u03c0\u03bf\u03b9\u03b7\u03b8\u03b5\u03af \u03bc\u03b5 \u03ac\u03bb\u03bb\u03bf\u03c5\u03c2 \u03c4\u03cd\u03c0\u03bf\u03c5\u03c2 \u03c7\u03b1\u03c1\u03c4\u03b9\u03bf\u03cd, \u03b1\u03bd \u03ba\u03b1\u03b9 \u03c4\u03b1 \u03b1\u03c0\u03bf\u03c4\u03b5\u03bb\u03ad\u03c3\u03bc\u03b1\u03c4\u03b1 \u03bc\u03c0\u03bf\u03c1\u03b5\u03af \u03bd\u03b1 \u03b4\u03b9\u03b1\u03c6\u03ad\u03c1\u03bf\u03c5\u03bd \u03c9\u03c2 \u03c0\u03c1\u03bf\u03c2 \u03c4\u03b7\u03bd \u03b1\u03ba\u03c1\u03af\u03b2\u03b5\u03b9\u03b1.<\/p>","protected":false},"excerpt":{"rendered":"<p>Understanding Coefficient of Friction in Paper Testing Coefficient of friction (COF) is a crucial parameter that reflects the resistance to motion between two surfaces. In paper applications, this value influences how one sheet slides over another. The static COF determines the force required to start the movement, while the kinetic COF measures the force needed [&hellip;]<\/p>","protected":false},"featured_media":10018,"parent":0,"template":"","meta":{"_acf_changed":true,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}}},"standard-category":[],"class_list":["post-9845","standard","type-standard","status-publish","has-post-thumbnail","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.packqc.com\/el\/wp-json\/wp\/v2\/standard\/9845","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.packqc.com\/el\/wp-json\/wp\/v2\/standard"}],"about":[{"href":"https:\/\/www.packqc.com\/el\/wp-json\/wp\/v2\/types\/standard"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.packqc.com\/el\/wp-json\/wp\/v2\/media\/10018"}],"wp:attachment":[{"href":"https:\/\/www.packqc.com\/el\/wp-json\/wp\/v2\/media?parent=9845"}],"wp:term":[{"taxonomy":"standard-category","embeddable":true,"href":"https:\/\/www.packqc.com\/el\/wp-json\/wp\/v2\/standard-category?post=9845"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}