{"id":1202,"date":"2025-07-15T08:41:08","date_gmt":"2025-07-15T08:41:08","guid":{"rendered":"https:\/\/www.wrapfilmtest.com\/?p=1202"},"modified":"2026-01-15T06:03:48","modified_gmt":"2026-01-15T06:03:48","slug":"wrap-stretch-film","status":"publish","type":"post","link":"https:\/\/www.wrapfilmtest.com\/el\/wrap-stretch-film","title":{"rendered":"\u039f\u03b4\u03b7\u03b3\u03cc\u03c2 \u03b4\u03bf\u03ba\u03b9\u03bc\u03ce\u03bd \u03c4\u03b1\u03b9\u03bd\u03b9\u03ce\u03bd \u03c4\u03b5\u03bd\u03c4\u03ce\u03bc\u03b1\u03c4\u03bf\u03c2 \u03c0\u03b5\u03c1\u03b9\u03c4\u03c5\u03bb\u03af\u03b3\u03bc\u03b1\u03c4\u03bf\u03c2 \u03bc\u03b5 \u03b2\u03ac\u03c3\u03b7 \u03c4\u03bf ASTM D882"},"content":{"rendered":"<h2 class=\"wp-block-heading\">\u0395\u03b9\u03c3\u03b1\u03b3\u03c9\u03b3\u03ae \u03c3\u03c4\u03b7 \u03b4\u03bf\u03ba\u03b9\u03bc\u03ae \u03c4\u03b1\u03b9\u03bd\u03b9\u03ce\u03bd stretch Wrap<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0397 \u03c4\u03b1\u03b9\u03bd\u03af\u03b1 stretch \u03c0\u03b1\u03af\u03b6\u03b5\u03b9 \u03ba\u03c1\u03af\u03c3\u03b9\u03bc\u03bf \u03c1\u03cc\u03bb\u03bf \u03c3\u03c4\u03b7 \u03c3\u03c5\u03c3\u03ba\u03b5\u03c5\u03b1\u03c3\u03af\u03b1 \u03ba\u03b1\u03b9 \u03c4\u03b7\u03bd \u03b5\u03c6\u03bf\u03b4\u03b9\u03b1\u03c3\u03c4\u03b9\u03ba\u03ae. \u0397 \u03b9\u03ba\u03b1\u03bd\u03cc\u03c4\u03b7\u03c4\u03ac \u03c4\u03b7\u03c2 \u03bd\u03b1 \u03c4\u03c5\u03bb\u03af\u03b3\u03b5\u03b9 \u03bc\u03b5 \u03b1\u03c3\u03c6\u03ac\u03bb\u03b5\u03b9\u03b1 \u03c4\u03b1 \u03c0\u03c1\u03bf\u03ca\u03cc\u03bd\u03c4\u03b1 \u03b4\u03b9\u03b1\u03c4\u03b7\u03c1\u03ce\u03bd\u03c4\u03b1\u03c2 \u03c0\u03b1\u03c1\u03ac\u03bb\u03bb\u03b7\u03bb\u03b1 \u03c4\u03b7\u03bd \u03b5\u03bb\u03b1\u03c3\u03c4\u03b9\u03ba\u03cc\u03c4\u03b7\u03c4\u03b1, \u03c4\u03b7\u03bd \u03b1\u03bd\u03c4\u03bf\u03c7\u03ae \u03ba\u03b1\u03b9 \u03c4\u03b7\u03bd \u03b1\u03bd\u03b8\u03b5\u03ba\u03c4\u03b9\u03ba\u03cc\u03c4\u03b7\u03c4\u03b1 \u03c5\u03c0\u03cc \u03c0\u03af\u03b5\u03c3\u03b7 \u03b5\u03af\u03bd\u03b1\u03b9 \u03b1\u03c0\u03b1\u03c1\u03b1\u03af\u03c4\u03b7\u03c4\u03b7. \u0393\u03b9\u03b1 \u03c4\u03b7 \u03b4\u03b9\u03b1\u03c3\u03c6\u03ac\u03bb\u03b9\u03c3\u03b7 \u03c4\u03b7\u03c2 \u03c0\u03bf\u03b9\u03cc\u03c4\u03b7\u03c4\u03b1\u03c2 \u03ba\u03b1\u03b9 \u03c4\u03b7\u03c2 \u03c3\u03c5\u03bd\u03ad\u03c0\u03b5\u03b9\u03b1\u03c2, \u03bf\u03b9 \u03ba\u03b1\u03c4\u03b1\u03c3\u03ba\u03b5\u03c5\u03b1\u03c3\u03c4\u03ad\u03c2 \u03ba\u03b1\u03b9 \u03bf\u03b9 \u03bf\u03bc\u03ac\u03b4\u03b5\u03c2 \u03c0\u03bf\u03b9\u03bf\u03c4\u03b9\u03ba\u03bf\u03cd \u03b5\u03bb\u03ad\u03b3\u03c7\u03bf\u03c5 \u03c3\u03c5\u03c7\u03bd\u03ac \u03b2\u03b1\u03c3\u03af\u03b6\u03bf\u03bd\u03c4\u03b1\u03b9 \u03c3\u03b5 <strong><a href=\"https:\/\/www.wrapfilmtest.com\/el\/astm-d882\/\">ASTM D882<\/a><\/strong>, \u03ad\u03bd\u03b1 \u03b5\u03c5\u03c1\u03ad\u03c9\u03c2 \u03b1\u03c0\u03bf\u03b4\u03b5\u03ba\u03c4\u03cc \u03c0\u03c1\u03cc\u03c4\u03c5\u03c0\u03bf \u03b3\u03b9\u03b1 \u03c4\u03bf\u03bd \u03c0\u03c1\u03bf\u03c3\u03b4\u03b9\u03bf\u03c1\u03b9\u03c3\u03bc\u03cc \u03c4\u03b7\u03c2 <strong>\u03b9\u03b4\u03b9\u03cc\u03c4\u03b7\u03c4\u03b5\u03c2 \u03b5\u03c6\u03b5\u03bb\u03ba\u03c5\u03c3\u03bc\u03bf\u03cd<\/strong> \u03bb\u03b5\u03c0\u03c4\u03ce\u03bd \u03c0\u03bb\u03b1\u03c3\u03c4\u03b9\u03ba\u03ce\u03bd \u03c6\u03cd\u03bb\u03bb\u03c9\u03bd, \u03cc\u03c0\u03c9\u03c2 \u03c4\u03b1\u03b9\u03bd\u03af\u03b5\u03c2 stretch. \u03a3\u03b5 \u03b1\u03c5\u03c4\u03cc\u03bd \u03c4\u03bf\u03bd \u03bf\u03b4\u03b7\u03b3\u03cc, \u03b8\u03b1 \u03b5\u03be\u03b5\u03c4\u03ac\u03c3\u03bf\u03c5\u03bc\u03b5 \u03c0\u03ce\u03c2 \u03bd\u03b1 \u03b4\u03b9\u03b5\u03be\u03ac\u03b3\u03bf\u03c5\u03bc\u03b5 <strong>\u03c4\u03c5\u03bb\u03af\u03be\u03c4\u03b5 \u03c4\u03b1\u03b9\u03bd\u03af\u03b1 \u03c4\u03ad\u03bd\u03c4\u03c9\u03c3\u03b7\u03c2<\/strong> \u03c4\u03b5\u03c3\u03c4 \u03b1\u03c0\u03bf\u03c4\u03b5\u03bb\u03b5\u03c3\u03bc\u03b1\u03c4\u03b9\u03ba\u03ac-\u03b9\u03b4\u03b9\u03b1\u03af\u03c4\u03b5\u03c1\u03b1 <strong>\u03b4\u03bf\u03ba\u03b9\u03bc\u03ad\u03c2 \u03b1\u03bd\u03c4\u03bf\u03c7\u03ae\u03c2 \u03c3\u03b5 \u03b5\u03c6\u03b5\u03bb\u03ba\u03c5\u03c3\u03bc\u03cc<\/strong>, <strong>\u03b4\u03bf\u03ba\u03b9\u03bc\u03ad\u03c2 \u03b5\u03c0\u03b9\u03bc\u03ae\u03ba\u03c5\u03bd\u03c3\u03b7\u03c2<\/strong>, \u03ba\u03b1\u03b9 \u03b3\u03b5\u03bd\u03b9\u03ba\u03ac <strong>\u03b4\u03bf\u03ba\u03b9\u03bc\u03ad\u03c2 \u03c4\u03b1\u03b9\u03bd\u03b9\u03ce\u03bd \u03c4\u03b5\u03bd\u03c4\u03ce\u03bc\u03b1\u03c4\u03bf\u03c2<\/strong>-\u03b3\u03b9\u03b1 \u03bd\u03b1 \u03b4\u03b9\u03b1\u03c3\u03c6\u03b1\u03bb\u03b9\u03c3\u03c4\u03b5\u03af \u03b7 \u03c3\u03c5\u03bc\u03bc\u03cc\u03c1\u03c6\u03c9\u03c3\u03b7, \u03b7 \u03b1\u03c0\u03cc\u03b4\u03bf\u03c3\u03b7 \u03ba\u03b1\u03b9 \u03b7 \u03b1\u03c3\u03c6\u03ac\u03bb\u03b5\u03b9\u03b1 \u03c4\u03c9\u03bd \u03c0\u03c1\u03bf\u03ca\u03cc\u03bd\u03c4\u03c9\u03bd.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u039a\u03b1\u03c4\u03b1\u03bd\u03cc\u03b7\u03c3\u03b7 \u03c4\u03bf\u03c5 ASTM D882 \u03ba\u03b1\u03b9 \u03c4\u03b7\u03c2 \u03b5\u03c6\u03b1\u03c1\u03bc\u03bf\u03b3\u03ae\u03c2 \u03c4\u03bf\u03c5 \u03c3\u03c4\u03b7\u03bd \u03c4\u03b1\u03b9\u03bd\u03af\u03b1 \u03c4\u03b5\u03bd\u03c4\u03ce\u03bc\u03b1\u03c4\u03bf\u03c2 \u03c0\u03b5\u03c1\u03b9\u03c4\u03c5\u03bb\u03af\u03b3\u03bc\u03b1\u03c4\u03bf\u03c2<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u03a4\u03bf ASTM D882 \u03c0\u03b5\u03c1\u03b9\u03b3\u03c1\u03ac\u03c6\u03b5\u03b9 \u03bc\u03b9\u03b1 \u03b1\u03ba\u03c1\u03b9\u03b2\u03ae \u03bc\u03b5\u03b8\u03bf\u03b4\u03bf\u03bb\u03bf\u03b3\u03af\u03b1 \u03b3\u03b9\u03b1 \u03c4\u03b7 \u03b4\u03bf\u03ba\u03b9\u03bc\u03ae \u03bb\u03b5\u03c0\u03c4\u03ce\u03bd \u03c0\u03bb\u03b1\u03c3\u03c4\u03b9\u03ba\u03ce\u03bd \u03bc\u03b5\u03bc\u03b2\u03c1\u03b1\u03bd\u03ce\u03bd, \u03b7 \u03bf\u03c0\u03bf\u03af\u03b1 \u03c0\u03b5\u03c1\u03b9\u03bb\u03b1\u03bc\u03b2\u03ac\u03bd\u03b5\u03b9 <strong>\u03c4\u03c5\u03bb\u03af\u03be\u03c4\u03b5 \u03c4\u03b1\u03b9\u03bd\u03af\u03b1 \u03c4\u03ad\u03bd\u03c4\u03c9\u03c3\u03b7\u03c2<\/strong> \u03c0\u03bf\u03c5 \u03c7\u03c1\u03b7\u03c3\u03b9\u03bc\u03bf\u03c0\u03bf\u03b9\u03bf\u03cd\u03bd\u03c4\u03b1\u03b9 \u03c3\u03c4\u03b7 \u03c3\u03c5\u03c3\u03ba\u03b5\u03c5\u03b1\u03c3\u03af\u03b1 \u03c0\u03b1\u03bb\u03b5\u03c4\u03ce\u03bd, \u03c3\u03c4\u03b7 \u03c3\u03c5\u03c3\u03ba\u03b5\u03c5\u03b1\u03c3\u03af\u03b1 \u03b5\u03c6\u03bf\u03b4\u03b9\u03b1\u03c3\u03c4\u03b9\u03ba\u03ae\u03c2 \u03ba\u03b1\u03b9 \u03c3\u03c4\u03b7 \u03c3\u03c5\u03c3\u03ba\u03b5\u03c5\u03b1\u03c3\u03af\u03b1 \u03c0\u03c1\u03bf\u03ca\u03cc\u03bd\u03c4\u03c9\u03bd. \u03a4\u03bf \u03c0\u03c1\u03cc\u03c4\u03c5\u03c0\u03bf \u03ba\u03b1\u03b8\u03bf\u03c1\u03af\u03b6\u03b5\u03b9 \u03c4\u03b9\u03c2 \u03c0\u03b1\u03c1\u03b1\u03bc\u03ad\u03c4\u03c1\u03bf\u03c5\u03c2 \u03b4\u03bf\u03ba\u03b9\u03bc\u03ae\u03c2, \u03c4\u03b9\u03c2 \u03b4\u03b9\u03b1\u03c3\u03c4\u03ac\u03c3\u03b5\u03b9\u03c2 \u03c4\u03c9\u03bd \u03b4\u03bf\u03ba\u03b9\u03bc\u03af\u03c9\u03bd, \u03c4\u03b7\u03bd \u03c4\u03b1\u03c7\u03cd\u03c4\u03b7\u03c4\u03b1 \u03b4\u03bf\u03ba\u03b9\u03bc\u03ae\u03c2 \u03ba\u03b1\u03b9 \u03c4\u03bf\u03bd \u03b1\u03c0\u03b1\u03c1\u03b1\u03af\u03c4\u03b7\u03c4\u03bf \u03b5\u03be\u03bf\u03c0\u03bb\u03b9\u03c3\u03bc\u03cc \u03b3\u03b9\u03b1 \u03c4\u03b7 \u03bc\u03ad\u03c4\u03c1\u03b7\u03c3\u03b7 \u03c4\u03c9\u03bd \u03b9\u03b4\u03b9\u03bf\u03c4\u03ae\u03c4\u03c9\u03bd \u03b5\u03c6\u03b5\u03bb\u03ba\u03c5\u03c3\u03bc\u03bf\u03cd, \u03cc\u03c0\u03c9\u03c2 \u03b7 \u03b1\u03bd\u03c4\u03bf\u03c7\u03ae \u03c3\u03b5 \u03b5\u03c6\u03b5\u03bb\u03ba\u03c5\u03c3\u03bc\u03cc, \u03b7 \u03b5\u03c0\u03b9\u03bc\u03ae\u03ba\u03c5\u03bd\u03c3\u03b7 \u03ba\u03b1\u03b9 \u03c4\u03bf \u03bc\u03ad\u03c4\u03c1\u03bf \u03b5\u03bb\u03b1\u03c3\u03c4\u03b9\u03ba\u03cc\u03c4\u03b7\u03c4\u03b1\u03c2.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u03a3\u03b5 \u03b1\u03bd\u03c4\u03af\u03b8\u03b5\u03c3\u03b7 \u03bc\u03b5 \u03c4\u03b1 \u03c0\u03b1\u03c7\u03cd\u03c4\u03b5\u03c1\u03b1 \u03c0\u03bb\u03b1\u03c3\u03c4\u03b9\u03ba\u03ac \u03c0\u03bf\u03c5 \u03b4\u03bf\u03ba\u03b9\u03bc\u03ac\u03b6\u03bf\u03bd\u03c4\u03b1\u03b9 \u03c3\u03cd\u03bc\u03c6\u03c9\u03bd\u03b1 \u03bc\u03b5 \u03c4\u03bf ASTM D638, <a href=\"https:\/\/store.astm.org\/d0882-18.html\" target=\"_blank\" rel=\"noreferrer noopener\">ASTM D882<\/a> \u03b5\u03af\u03bd\u03b1\u03b9 \u03c0\u03c1\u03bf\u03c3\u03b1\u03c1\u03bc\u03bf\u03c3\u03bc\u03ad\u03bd\u03bf \u03c3\u03b5 \u03bb\u03b5\u03c0\u03c4\u03cc\u03c4\u03b5\u03c1\u03b1, \u03b5\u03cd\u03ba\u03b1\u03bc\u03c0\u03c4\u03b1 \u03c6\u03b9\u03bb\u03bc, \u03ba\u03b1\u03b8\u03b9\u03c3\u03c4\u03ce\u03bd\u03c4\u03b1\u03c2 \u03c4\u03bf \u03b9\u03b4\u03b1\u03bd\u03b9\u03ba\u03cc \u03b3\u03b9\u03b1 \u03b4\u03bf\u03ba\u03b9\u03bc\u03ad\u03c2 \u03c4\u03b1\u03b9\u03bd\u03b9\u03ce\u03bd stretch.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u0394\u03bf\u03ba\u03b9\u03bc\u03ae \u03b1\u03bd\u03c4\u03bf\u03c7\u03ae\u03c2 \u03c3\u03b5 \u03b5\u03c6\u03b5\u03bb\u03ba\u03c5\u03c3\u03bc\u03cc \u03b3\u03b9\u03b1 \u03c4\u03b1\u03b9\u03bd\u03af\u03b1 \u03c4\u03b5\u03bd\u03c4\u03ce\u03bc\u03b1\u03c4\u03bf\u03c2 \u03c0\u03b5\u03c1\u03b9\u03c4\u03c5\u03bb\u03af\u03b3\u03bc\u03b1\u03c4\u03bf\u03c2<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u039f <strong>\u03b4\u03bf\u03ba\u03b9\u03bc\u03ae \u03b1\u03bd\u03c4\u03bf\u03c7\u03ae\u03c2 \u03c3\u03b5 \u03b5\u03c6\u03b5\u03bb\u03ba\u03c5\u03c3\u03bc\u03cc<\/strong> \u03ba\u03b1\u03b8\u03bf\u03c1\u03af\u03b6\u03b5\u03b9 \u03c4\u03b7 \u03bc\u03ad\u03b3\u03b9\u03c3\u03c4\u03b7 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 \u03c0\u03bf\u03c5 \u03bc\u03c0\u03bf\u03c1\u03b5\u03af \u03bd\u03b1 \u03b1\u03bd\u03c4\u03ad\u03be\u03b5\u03b9 \u03bc\u03b9\u03b1 \u03bc\u03b5\u03bc\u03b2\u03c1\u03ac\u03bd\u03b7 stretch \u03c0\u03c1\u03b9\u03bd \u03c3\u03c0\u03ac\u03c3\u03b5\u03b9. \u0391\u03c5\u03c4\u03ae \u03b7 \u03b9\u03b4\u03b9\u03cc\u03c4\u03b7\u03c4\u03b1 \u03b4\u03b5\u03af\u03c7\u03bd\u03b5\u03b9 \u03c0\u03cc\u03c3\u03bf \u03b1\u03bd\u03b8\u03b5\u03ba\u03c4\u03b9\u03ba\u03ae \u03b5\u03af\u03bd\u03b1\u03b9 \u03b7 \u03bc\u03b5\u03bc\u03b2\u03c1\u03ac\u03bd\u03b7 \u03c3\u03c4\u03b9\u03c2 \u03b4\u03c5\u03bd\u03ac\u03bc\u03b5\u03b9\u03c2 \u03ad\u03bb\u03be\u03b7\u03c2, \u03c0\u03c1\u03ac\u03b3\u03bc\u03b1 \u03c0\u03bf\u03c5 \u03b5\u03af\u03bd\u03b1\u03b9 \u03b6\u03c9\u03c4\u03b9\u03ba\u03ae\u03c2 \u03c3\u03b7\u03bc\u03b1\u03c3\u03af\u03b1\u03c2 \u03cc\u03c4\u03b1\u03bd \u03c4\u03b5\u03bd\u03c4\u03ce\u03bd\u03b5\u03c4\u03b1\u03b9 \u03c0\u03ac\u03bd\u03c9 \u03b1\u03c0\u03cc \u03c0\u03b1\u03bb\u03ad\u03c4\u03b5\u03c2 \u03ae \u03c0\u03c1\u03bf\u03ca\u03cc\u03bd\u03c4\u03b1.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u0392\u03b1\u03c3\u03b9\u03ba\u03ac \u03b2\u03ae\u03bc\u03b1\u03c4\u03b1 \u03c0\u03bf\u03c5 \u03c0\u03c1\u03ad\u03c0\u03b5\u03b9 \u03bd\u03b1 \u03b1\u03ba\u03bf\u03bb\u03bf\u03c5\u03b8\u03ae\u03c3\u03b5\u03c4\u03b5:<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-embed alignright 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<iframe title=\"\u039b\u03b5\u03b9\u03c4\u03bf\u03c5\u03c1\u03b3\u03af\u03b1 \u03c4\u03b7\u03c2 \u03b4\u03bf\u03ba\u03b9\u03bc\u03ae\u03c2 \u03c4\u03ac\u03c3\u03b7\u03c2 \u03ba\u03b1\u03b9 \u03b5\u03c0\u03b9\u03bc\u03ae\u03ba\u03c5\u03bd\u03c3\u03b7\u03c2 \u03c0\u03bb\u03b1\u03c3\u03c4\u03b9\u03ba\u03ae\u03c2 \u03bc\u03b5\u03bc\u03b2\u03c1\u03ac\u03bd\u03b7\u03c2 ASTM D882 \u03c3\u03c4\u03bf\u03bd \u03b4\u03bf\u03ba\u03b9\u03bc\u03b1\u03c3\u03c4\u03ae \u03b5\u03c6\u03b5\u03bb\u03ba\u03c5\u03c3\u03bc\u03bf\u03cd TST-01\" width=\"1020\" height=\"574\" src=\"https:\/\/www.youtube.com\/embed\/GekylTFLo0Q?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>\n<\/div><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u03a0\u03c1\u03bf\u03b5\u03c4\u03bf\u03b9\u03bc\u03b1\u03c3\u03af\u03b1 \u03b4\u03b5\u03af\u03b3\u03bc\u03b1\u03c4\u03bf\u03c2:<\/strong> \u039a\u03cc\u03c8\u03c4\u03b5 \u03bb\u03c9\u03c1\u03af\u03b4\u03b5\u03c2 \u03c6\u03b9\u03bb\u03bc \u03bc\u03b5 \u03bf\u03bc\u03bf\u03b9\u03cc\u03bc\u03bf\u03c1\u03c6\u03bf \u03c0\u03bb\u03ac\u03c4\u03bf\u03c2 (\u03c3\u03c5\u03bd\u03ae\u03b8\u03c9\u03c2 15-25,4 mm) \u03ba\u03b1\u03b9 \u03c0\u03ac\u03c7\u03bf\u03c2. \u03a4\u03bf \u03b4\u03b5\u03af\u03b3\u03bc\u03b1 \u03c0\u03c1\u03ad\u03c0\u03b5\u03b9 \u03bd\u03b1 \u03b5\u03af\u03bd\u03b1\u03b9 \u03c4\u03bf\u03c5\u03bb\u03ac\u03c7\u03b9\u03c3\u03c4\u03bf\u03bd 50 mm \u03bc\u03b1\u03ba\u03c1\u03cd\u03c4\u03b5\u03c1\u03bf \u03b1\u03c0\u03cc \u03c4\u03bf \u03b4\u03b9\u03b1\u03c7\u03c9\u03c1\u03b9\u03c3\u03bc\u03cc \u03c4\u03b7\u03c2 \u03bb\u03b1\u03b2\u03ae\u03c2.<\/li>\n\n\n\n<li><strong>\u0395\u03b3\u03ba\u03b1\u03c4\u03ac\u03c3\u03c4\u03b1\u03c3\u03b7 \u03b4\u03bf\u03ba\u03b9\u03bc\u03ae\u03c2:<\/strong> \u03a4\u03bf\u03c0\u03bf\u03b8\u03b5\u03c4\u03ae\u03c3\u03c4\u03b5 \u03c4\u03bf \u03b4\u03bf\u03ba\u03af\u03bc\u03b9\u03bf \u03c3\u03b5 \u03bc\u03b7\u03c7\u03b1\u03bd\u03ae \u03b4\u03bf\u03ba\u03b9\u03bc\u03ae\u03c2 \u03b5\u03c6\u03b5\u03bb\u03ba\u03c5\u03c3\u03bc\u03bf\u03cd \u03bc\u03b5 <strong>\u03c3\u03c4\u03b1\u03b8\u03b5\u03c1\u03cc\u03c2 \u03c1\u03c5\u03b8\u03bc\u03cc\u03c2 \u03ba\u03af\u03bd\u03b7\u03c3\u03b7\u03c2 \u03c4\u03b7\u03c2 \u03b5\u03b3\u03ba\u03ac\u03c1\u03c3\u03b9\u03b1\u03c2 \u03ba\u03b5\u03c6\u03b1\u03bb\u03ae\u03c2<\/strong>.<\/li>\n\n\n\n<li><strong>\u0395\u03ba\u03c4\u03ad\u03bb\u03b5\u03c3\u03b7 \u03b4\u03bf\u03ba\u03b9\u03bc\u03ae\u03c2:<\/strong> \u03a4\u03b5\u03bd\u03c4\u03ce\u03c3\u03c4\u03b5 \u03c4\u03bf \u03c6\u03b9\u03bb\u03bc \u03bc\u03b5 \u03c0\u03c1\u03bf\u03ba\u03b1\u03b8\u03bf\u03c1\u03b9\u03c3\u03bc\u03ad\u03bd\u03b7 \u03c4\u03b1\u03c7\u03cd\u03c4\u03b7\u03c4\u03b1 (\u03bc\u03b5 \u03b2\u03ac\u03c3\u03b7 \u03c4\u03bf\u03bd \u03b1\u03c1\u03c7\u03b9\u03ba\u03cc \u03c1\u03c5\u03b8\u03bc\u03cc \u03c0\u03b1\u03c1\u03b1\u03bc\u03cc\u03c1\u03c6\u03c9\u03c3\u03b7\u03c2). \u039a\u03b1\u03c4\u03b1\u03b3\u03c1\u03ac\u03c8\u03c4\u03b5 \u03c4\u03b7\u03bd \u03ba\u03b1\u03bc\u03c0\u03cd\u03bb\u03b7 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7\u03c2-\u03ad\u03ba\u03c4\u03b1\u03c3\u03b7\u03c2 \u03bc\u03ad\u03c7\u03c1\u03b9 \u03bd\u03b1 \u03c3\u03c0\u03ac\u03c3\u03b5\u03b9 \u03b7 \u03bc\u03b5\u03bc\u03b2\u03c1\u03ac\u03bd\u03b7.<\/li>\n\n\n\n<li><strong>\u0395\u03c1\u03bc\u03b7\u03bd\u03b5\u03af\u03b1 \u03b1\u03c0\u03bf\u03c4\u03b5\u03bb\u03b5\u03c3\u03bc\u03ac\u03c4\u03c9\u03bd:<\/strong> \u03a5\u03c0\u03bf\u03bb\u03bf\u03b3\u03af\u03c3\u03c4\u03b5 \u03c4\u03b7\u03bd \u03b1\u03bd\u03c4\u03bf\u03c7\u03ae \u03c3\u03b5 \u03b5\u03c6\u03b5\u03bb\u03ba\u03c5\u03c3\u03bc\u03cc \u03b4\u03b9\u03b1\u03b9\u03c1\u03ce\u03bd\u03c4\u03b1\u03c2 \u03c4\u03bf \u03bc\u03ad\u03b3\u03b9\u03c3\u03c4\u03bf \u03c6\u03bf\u03c1\u03c4\u03af\u03bf \u03bc\u03b5 \u03c4\u03bf \u03b5\u03bc\u03b2\u03b1\u03b4\u03cc\u03bd \u03c4\u03b7\u03c2 \u03b4\u03b9\u03b1\u03c4\u03bf\u03bc\u03ae\u03c2 \u03c4\u03bf\u03c5 \u03b4\u03bf\u03ba\u03b9\u03bc\u03af\u03bf\u03c5.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u0394\u03bf\u03ba\u03b9\u03bc\u03ae \u03b5\u03c0\u03b9\u03bc\u03ae\u03ba\u03c5\u03bd\u03c3\u03b7\u03c2 \u03b3\u03b9\u03b1 \u03c4\u03b1\u03b9\u03bd\u03af\u03b1 \u03c4\u03b5\u03bd\u03c4\u03ce\u03bc\u03b1\u03c4\u03bf\u03c2 \u03c0\u03b5\u03c1\u03b9\u03c4\u03c5\u03bb\u03af\u03b3\u03bc\u03b1\u03c4\u03bf\u03c2<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u039f <strong>\u03b4\u03bf\u03ba\u03b9\u03bc\u03ae \u03b5\u03c0\u03b9\u03bc\u03ae\u03ba\u03c5\u03bd\u03c3\u03b7\u03c2<\/strong> \u03b1\u03be\u03b9\u03bf\u03bb\u03bf\u03b3\u03b5\u03af \u03c4\u03b7\u03bd \u03b9\u03ba\u03b1\u03bd\u03cc\u03c4\u03b7\u03c4\u03b1 \u03c4\u03b7\u03c2 \u03bc\u03b5\u03bc\u03b2\u03c1\u03ac\u03bd\u03b7\u03c2 \u03bd\u03b1 \u03c4\u03b5\u03bd\u03c4\u03ce\u03bd\u03b5\u03c4\u03b1\u03b9 \u03c0\u03c1\u03b9\u03bd \u03c3\u03c0\u03ac\u03c3\u03b5\u03b9 - \u03ad\u03bd\u03b1\u03c2 \u03c3\u03b7\u03bc\u03b1\u03bd\u03c4\u03b9\u03ba\u03cc\u03c2 \u03b4\u03b5\u03af\u03ba\u03c4\u03b7\u03c2 \u03c4\u03b7\u03c2 \u03b5\u03c5\u03b5\u03bb\u03b9\u03be\u03af\u03b1\u03c2 \u03ba\u03b1\u03b9 \u03c4\u03b7\u03c2 \u03b9\u03ba\u03b1\u03bd\u03cc\u03c4\u03b7\u03c4\u03b1\u03c2 \u03c3\u03c5\u03b3\u03ba\u03c1\u03ac\u03c4\u03b7\u03c3\u03b7\u03c2 \u03c6\u03bf\u03c1\u03c4\u03af\u03bf\u03c5.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u0394\u03b9\u03b1\u03b4\u03b9\u03ba\u03b1\u03c3\u03af\u03b1 \u03b4\u03bf\u03ba\u03b9\u03bc\u03ae\u03c2 \u03b5\u03c0\u03b9\u03bc\u03ae\u03ba\u03c5\u03bd\u03c3\u03b7\u03c2:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u03a7\u03c1\u03b7\u03c3\u03b9\u03bc\u03bf\u03c0\u03bf\u03b9\u03ae\u03c3\u03c4\u03b5 \u03c4\u03bf \u03af\u03b4\u03b9\u03bf \u03b4\u03bf\u03ba\u03af\u03bc\u03b9\u03bf \u03cc\u03c0\u03c9\u03c2 \u03b3\u03b9\u03b1 \u03c4\u03b7 \u03b4\u03bf\u03ba\u03b9\u03bc\u03ae \u03b1\u03bd\u03c4\u03bf\u03c7\u03ae\u03c2 \u03c3\u03b5 \u03b5\u03c6\u03b5\u03bb\u03ba\u03c5\u03c3\u03bc\u03cc.<\/li>\n\n\n\n<li>\u039a\u03b1\u03c4\u03ac \u03c4\u03b7 \u03b4\u03b9\u03ac\u03c1\u03ba\u03b5\u03b9\u03b1 \u03c4\u03b7\u03c2 \u03b4\u03bf\u03ba\u03b9\u03bc\u03ae\u03c2, \u03bc\u03b5\u03c4\u03c1\u03ae\u03c3\u03c4\u03b5 \u03c0\u03cc\u03c3\u03bf \u03b5\u03c0\u03b9\u03bc\u03b7\u03ba\u03cd\u03bd\u03b5\u03c4\u03b1\u03b9 \u03c4\u03bf \u03c6\u03b9\u03bb\u03bc \u03b1\u03c0\u03cc \u03c4\u03bf \u03b1\u03c1\u03c7\u03b9\u03ba\u03cc \u03c4\u03bf\u03c5 \u03bc\u03ae\u03ba\u03bf\u03c2 \u03c0\u03c1\u03b9\u03bd \u03c3\u03c0\u03ac\u03c3\u03b5\u03b9.<\/li>\n\n\n\n<li>\u0397 \u03b5\u03c0\u03b9\u03bc\u03ae\u03ba\u03c5\u03bd\u03c3\u03b7 \u03b5\u03ba\u03c6\u03c1\u03ac\u03b6\u03b5\u03c4\u03b1\u03b9 \u03c9\u03c2 \u03c0\u03bf\u03c3\u03bf\u03c3\u03c4\u03cc:<br>\u0395\u03c0\u03b9\u03bc\u03ae\u03ba\u03c5\u03bd\u03c3\u03b7 (%) = (L<sub>final<\/sub> - L<sub>\u03b1\u03c1\u03c7\u03b9\u03ba\u03cc<\/sub>) \u00f7 L<sub>\u03b1\u03c1\u03c7\u03b9\u03ba\u03cc<\/sub> \u00d7 100<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u039f <strong>\u03a0\u03c1\u03cc\u03c4\u03c5\u03c0\u03bf ASTM D882<\/strong> \u03c0\u03b1\u03c1\u03ad\u03c7\u03b5\u03b9 \u03ba\u03b1\u03c4\u03b5\u03c5\u03b8\u03c5\u03bd\u03c4\u03ae\u03c1\u03b9\u03b5\u03c2 \u03b3\u03c1\u03b1\u03bc\u03bc\u03ad\u03c2 \u03c3\u03c7\u03b5\u03c4\u03b9\u03ba\u03ac \u03bc\u03b5 \u03c4\u03b1 \u03ba\u03b1\u03c4\u03ac\u03bb\u03bb\u03b7\u03bb\u03b1 \u03bc\u03ae\u03ba\u03b7 \u03bc\u03b5\u03c4\u03c1\u03b7\u03c4\u03ae \u03ba\u03b1\u03b9 \u03c4\u03bf\u03c5\u03c2 \u03c1\u03c5\u03b8\u03bc\u03bf\u03cd\u03c2 \u03c0\u03b1\u03c1\u03b1\u03bc\u03cc\u03c1\u03c6\u03c9\u03c3\u03b7\u03c2 \u03b3\u03b9\u03b1 \u03bd\u03b1 \u03b4\u03b9\u03b1\u03c3\u03c6\u03b1\u03bb\u03b9\u03c3\u03c4\u03b5\u03af \u03b7 \u03b1\u03bd\u03b1\u03c0\u03b1\u03c1\u03b1\u03b3\u03c9\u03b3\u03b9\u03bc\u03cc\u03c4\u03b7\u03c4\u03b1 \u03ba\u03b1\u03b9 \u03b7 \u03b1\u03ba\u03c1\u03af\u03b2\u03b5\u03b9\u03b1.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u03a3\u03ba\u03ad\u03c8\u03b5\u03b9\u03c2 \u03b4\u03bf\u03ba\u03b9\u03bc\u03ae\u03c2 \u03c4\u03b1\u03b9\u03bd\u03b9\u03ce\u03bd \u03c4\u03ac\u03bd\u03c5\u03c3\u03b7\u03c2<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0395\u03ba\u03c4\u03cc\u03c2 \u03b1\u03c0\u03cc \u03c4\u03b9\u03c2 \u03b9\u03b4\u03b9\u03cc\u03c4\u03b7\u03c4\u03b5\u03c2 \u03b5\u03c6\u03b5\u03bb\u03ba\u03c5\u03c3\u03bc\u03bf\u03cd \u03ba\u03b1\u03b9 \u03b5\u03c0\u03b9\u03bc\u03ae\u03ba\u03c5\u03bd\u03c3\u03b7\u03c2, <strong>\u03c4\u03c5\u03bb\u03af\u03be\u03c4\u03b5 \u03c4\u03b1\u03b9\u03bd\u03af\u03b1 \u03c4\u03ad\u03bd\u03c4\u03c9\u03c3\u03b7\u03c2<\/strong> \u03bf\u03b9 \u03b4\u03bf\u03ba\u03b9\u03bc\u03ad\u03c2 \u03bc\u03c0\u03bf\u03c1\u03bf\u03cd\u03bd \u03bd\u03b1 \u03c0\u03b5\u03c1\u03b9\u03bb\u03b1\u03bc\u03b2\u03ac\u03bd\u03bf\u03c5\u03bd \u03bc\u03b5\u03c4\u03c1\u03ae\u03c3\u03b5\u03b9\u03c2 \u03b3\u03b9\u03b1:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u039c\u03ad\u03c4\u03c1\u03bf \u03b5\u03bb\u03b1\u03c3\u03c4\u03b9\u03ba\u03cc\u03c4\u03b7\u03c4\u03b1\u03c2<\/strong> - \u03c5\u03c0\u03bf\u03b4\u03b5\u03b9\u03ba\u03bd\u03cd\u03b5\u03b9 \u03c4\u03b7 \u03b4\u03c5\u03c3\u03ba\u03b1\u03bc\u03c8\u03af\u03b1 \u03c4\u03b7\u03c2 \u03bc\u03b5\u03bc\u03b2\u03c1\u03ac\u03bd\u03b7\u03c2.<\/li>\n\n\n\n<li><strong>\u039c\u03ad\u03c4\u03c1\u03bf \u03b4\u03b5\u03c5\u03c4\u03b5\u03c1\u03b5\u03cd\u03bf\u03c5\u03c3\u03b1\u03c2<\/strong> - \u03c0\u03bf\u03c5 \u03c7\u03c1\u03b7\u03c3\u03b9\u03bc\u03bf\u03c0\u03bf\u03b9\u03bf\u03cd\u03bd\u03c4\u03b1\u03b9 \u03b3\u03b9\u03b1 \u03c4\u03b1\u03b9\u03bd\u03af\u03b5\u03c2 \u03c7\u03b1\u03bc\u03b7\u03bb\u03ae\u03c2 \u03c4\u03ac\u03bd\u03c5\u03c3\u03b7\u03c2.<\/li>\n\n\n\n<li><strong>\u0395\u03bd\u03ad\u03c1\u03b3\u03b5\u03b9\u03b1 \u03b3\u03b9\u03b1 \u03bd\u03b1 \u03c3\u03c0\u03ac\u03c3\u03b5\u03b9<\/strong> - \u03c3\u03c5\u03bd\u03bf\u03bb\u03b9\u03ba\u03ae \u03b5\u03bd\u03ad\u03c1\u03b3\u03b5\u03b9\u03b1 \u03c0\u03bf\u03c5 \u03b1\u03c0\u03bf\u03c1\u03c1\u03bf\u03c6\u03ac\u03c4\u03b1\u03b9 \u03bc\u03ad\u03c7\u03c1\u03b9 \u03c4\u03b7\u03bd \u03b1\u03c3\u03c4\u03bf\u03c7\u03af\u03b1.<\/li>\n\n\n\n<li><strong>\u03a3\u03b7\u03bc\u03b5\u03af\u03bf \u03b1\u03c0\u03cc\u03b4\u03bf\u03c3\u03b7\u03c2<\/strong> - \u03c4\u03bf \u03c3\u03b7\u03bc\u03b5\u03af\u03bf \u03c3\u03c4\u03bf \u03bf\u03c0\u03bf\u03af\u03bf \u03b1\u03c1\u03c7\u03af\u03b6\u03b5\u03b9 \u03b7 \u03bc\u03cc\u03bd\u03b9\u03bc\u03b7 \u03c0\u03b1\u03c1\u03b1\u03bc\u03cc\u03c1\u03c6\u03c9\u03c3\u03b7.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u03a4\u03bf \u03c0\u03c1\u03cc\u03c4\u03c5\u03c0\u03bf ASTM D882 \u03b5\u03c0\u03b9\u03c4\u03c1\u03ad\u03c0\u03b5\u03b9 \u03c4\u03b7 \u03c7\u03c1\u03ae\u03c3\u03b7 \u03b5\u03ba\u03c4\u03b1\u03c4\u03cc\u03bc\u03b5\u03c4\u03c1\u03bf\u03c5 \u03b3\u03b9\u03b1 \u03c4\u03b7 \u03bc\u03ad\u03c4\u03c1\u03b7\u03c3\u03b7 \u03c0\u03b1\u03c1\u03b1\u03bc\u03bf\u03c1\u03c6\u03ce\u03c3\u03b5\u03c9\u03bd \u03c5\u03c8\u03b7\u03bb\u03ae\u03c2 \u03b1\u03ba\u03c1\u03af\u03b2\u03b5\u03b9\u03b1\u03c2 \u03ba\u03b1\u03b9 \u03c3\u03c5\u03bd\u03b9\u03c3\u03c4\u03ac \u03c4\u03b7\u03bd \u03b5\u03ba\u03c4\u03ad\u03bb\u03b5\u03c3\u03b7 \u03b4\u03bf\u03ba\u03b9\u03bc\u03ce\u03bd \u03c4\u03cc\u03c3\u03bf \u03c3\u03c4\u03b7 \u03bc\u03b7\u03c7\u03b1\u03bd\u03b9\u03ba\u03ae \u03cc\u03c3\u03bf \u03ba\u03b1\u03b9 \u03c3\u03c4\u03b7\u03bd \u03b5\u03b3\u03ba\u03ac\u03c1\u03c3\u03b9\u03b1 \u03ba\u03b1\u03c4\u03b5\u03cd\u03b8\u03c5\u03bd\u03c3\u03b7 \u03b3\u03b9\u03b1 \u03bd\u03b1 \u03bb\u03b7\u03c6\u03b8\u03b5\u03af \u03c5\u03c0\u03cc\u03c8\u03b7 \u03b7 \u03b1\u03bd\u03b9\u03c3\u03bf\u03c4\u03c1\u03bf\u03c0\u03af\u03b1 \u03c4\u03bf\u03c5 \u03c6\u03b9\u03bb\u03bc.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u0392\u03ad\u03bb\u03c4\u03b9\u03c3\u03c4\u03b5\u03c2 \u03c0\u03c1\u03b1\u03ba\u03c4\u03b9\u03ba\u03ad\u03c2 \u03c3\u03c4\u03b9\u03c2 \u03b4\u03bf\u03ba\u03b9\u03bc\u03ad\u03c2 \u03c4\u03b1\u03b9\u03bd\u03b9\u03ce\u03bd stretch<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0393\u03b9\u03b1 \u03c4\u03b7\u03bd \u03b1\u03c0\u03cc\u03ba\u03c4\u03b7\u03c3\u03b7 \u03b1\u03ba\u03c1\u03b9\u03b2\u03ce\u03bd \u03ba\u03b1\u03b9 \u03b5\u03c0\u03b1\u03bd\u03b1\u03bb\u03b1\u03bc\u03b2\u03b1\u03bd\u03cc\u03bc\u03b5\u03bd\u03c9\u03bd \u03b1\u03c0\u03bf\u03c4\u03b5\u03bb\u03b5\u03c3\u03bc\u03ac\u03c4\u03c9\u03bd:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0394\u03b9\u03b1\u03c4\u03b7\u03c1\u03ae\u03c3\u03c4\u03b5 \u03c3\u03c4\u03b1\u03b8\u03b5\u03c1\u03ad\u03c2 \u03c3\u03c5\u03bd\u03b8\u03ae\u03ba\u03b5\u03c2 \u03b4\u03bf\u03ba\u03b9\u03bc\u03ae\u03c2: \u03b8\u03b5\u03c1\u03bc\u03bf\u03ba\u03c1\u03b1\u03c3\u03af\u03b1, \u03c5\u03b3\u03c1\u03b1\u03c3\u03af\u03b1 \u03ba\u03b1\u03b9 \u03c0\u03c1\u03bf\u03c3\u03b1\u03bd\u03b1\u03c4\u03bf\u03bb\u03b9\u03c3\u03bc\u03cc\u03c2 \u03c4\u03bf\u03c5 \u03c6\u03b9\u03bb\u03bc.<\/li>\n\n\n\n<li>\u03a7\u03c1\u03ae\u03c3\u03b7 <strong>\u03c4\u03bf\u03c5\u03bb\u03ac\u03c7\u03b9\u03c3\u03c4\u03bf\u03bd \u03c0\u03ad\u03bd\u03c4\u03b5 \u03b4\u03b5\u03af\u03b3\u03bc\u03b1\u03c4\u03b1<\/strong> \u03b3\u03b9\u03b1 \u03b9\u03c3\u03cc\u03c4\u03c1\u03bf\u03c0\u03b5\u03c2 \u03c4\u03b1\u03b9\u03bd\u03af\u03b5\u03c2 \u03ba\u03b1\u03b9 <strong>\u03b4\u03ad\u03ba\u03b1<\/strong> \u03b5\u03ac\u03bd \u03c5\u03c0\u03ac\u03c1\u03c7\u03b5\u03b9 \u03c5\u03c0\u03bf\u03c8\u03af\u03b1 \u03b1\u03bd\u03b9\u03c3\u03bf\u03c4\u03c1\u03bf\u03c0\u03af\u03b1\u03c2.<\/li>\n\n\n\n<li>\u0391\u03c0\u03bf\u03c6\u03cd\u03b3\u03b5\u03c4\u03b5 \u03c4\u03b1 \u03c3\u03c0\u03b1\u03c3\u03af\u03bc\u03b1\u03c4\u03b1 \u03c4\u03c9\u03bd \u03c3\u03b1\u03b3\u03bf\u03bd\u03b9\u03ce\u03bd, \u03b5\u03ba\u03c4\u03cc\u03c2 \u03b5\u03ac\u03bd \u03ad\u03c7\u03b5\u03b9 \u03b1\u03c0\u03bf\u03b4\u03b5\u03b9\u03c7\u03b8\u03b5\u03af \u03c3\u03c4\u03b1\u03c4\u03b9\u03c3\u03c4\u03b9\u03ba\u03ac \u03cc\u03c4\u03b9 \u03b1\u03bd\u03c4\u03b9\u03ba\u03b1\u03c4\u03bf\u03c0\u03c4\u03c1\u03af\u03b6\u03bf\u03c5\u03bd \u03ad\u03b3\u03ba\u03c5\u03c1\u03b5\u03c2 \u03b5\u03c0\u03b9\u03b4\u03cc\u03c3\u03b5\u03b9\u03c2.<\/li>\n\n\n\n<li><font style=\"vertical-align: inherit\"><font style=\"vertical-align: inherit\">\u0392\u03b5\u03b2\u03b1\u03b9\u03c9\u03b8\u03b5\u03af\u03c4\u03b5 \u03cc\u03c4\u03b9 \u03c4\u03bf \u03c0\u03ac\u03c7\u03bf\u03c2 \u03ba\u03b1\u03b9 \u03c4\u03bf \u03c0\u03bb\u03ac\u03c4\u03bf\u03c2 \u03c4\u03bf\u03c5 \u03b4\u03b5\u03af\u03b3\u03bc\u03b1\u03c4\u03bf\u03c2 \u03b5\u03af\u03bd\u03b1\u03b9 \u03b5\u03bd\u03c4\u03cc\u03c2 \u03c4\u03c9\u03bd \u03bf\u03c1\u03af\u03c9\u03bd \u03b1\u03bd\u03bf\u03c7\u03ae\u03c2, \u03cc\u03c0\u03c9\u03c2 \u03bf\u03c1\u03af\u03b6\u03bf\u03bd\u03c4\u03b1\u03b9 \u03c3\u03c4\u03b7\u03bd \u03b5\u03bd\u03cc\u03c4\u03b7\u03c4\u03b1 7 \u03c4\u03bf\u03c5 ASTM D882.\u3002<\/font><\/font><\/li>\n<\/ul>\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\u03be\u03bf\u03c0\u03bb\u03b9\u03c3\u03bc\u03bf\u03cd<\/h2>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-group is-nowrap is-layout-flex wp-container-core-group-is-layout-8f761849 wp-block-group-is-layout-flex\">\n<p class=\"wp-block-paragraph\"><font style=\"vertical-align: inherit\"><\/font><font style=\"vertical-align: inherit\"><font style=\"vertical-align: inherit\">\u0397 \u03b1\u03ba\u03c1\u03af\u03b2\u03b5\u03b9\u03b1 \u03c4\u03c9\u03bd <strong>\u03c4\u03c5\u03bb\u03af\u03be\u03c4\u03b5 \u03c4\u03b1\u03b9\u03bd\u03af\u03b1 \u03c4\u03ad\u03bd\u03c4\u03c9\u03c3\u03b7\u03c2<\/strong> \u03b5\u03be\u03b1\u03c1\u03c4\u03ac\u03c4\u03b1\u03b9 \u03c3\u03b5 \u03bc\u03b5\u03b3\u03ac\u03bb\u03bf \u03b2\u03b1\u03b8\u03bc\u03cc \u03b1\u03c0\u03cc \u03c4\u03b7\u03bd \u03b1\u03c0\u03cc\u03b4\u03bf\u03c3\u03b7 \u03c4\u03b7\u03c2 \u03bc\u03b7\u03c7\u03b1\u03bd\u03ae\u03c2 \u03b4\u03bf\u03ba\u03b9\u03bc\u03ce\u03bd. \u0393\u03b9\u03b1 \u03c4\u03b1 \u03b5\u03c1\u03b3\u03b1\u03c3\u03c4\u03ae\u03c1\u03b9\u03b1 \u03c0\u03bf\u03c5 \u03b5\u03c0\u03b9\u03b4\u03b9\u03ce\u03ba\u03bf\u03c5\u03bd \u03b1\u03be\u03b9\u03cc\u03c0\u03b9\u03c3\u03c4\u03b1 \u03ba\u03b1\u03b9 \u03c3\u03c5\u03bc\u03b2\u03b1\u03c4\u03ac \u03b1\u03c0\u03bf\u03c4\u03b5\u03bb\u03ad\u03c3\u03bc\u03b1\u03c4\u03b1, \u03c4\u03bf <strong>\u039a\u03c5\u03c4\u03c4\u03b1\u03c1\u03b9\u03ba\u03ac \u03cc\u03c1\u03b3\u03b1\u03bd\u03b1 <\/strong><a href=\"https:\/\/www.wrapfilmtest.com\/el\/tensile-and-elongation-tester\/\"><strong>TST-01 \u0395\u03bb\u03b5\u03b3\u03ba\u03c4\u03ae\u03c2 \u03b5\u03c6\u03b5\u03bb\u03ba\u03c5\u03c3\u03bc\u03bf\u03cd \u03ba\u03b1\u03b9 \u03b5\u03c0\u03b9\u03bc\u03ae\u03ba\u03c5\u03bd\u03c3\u03b7\u03c2<\/strong> <\/a>\u03b5\u03af\u03bd\u03b1\u03b9 \u03bc\u03b9\u03b1 \u03b9\u03c3\u03c7\u03c5\u03c1\u03ae \u03b5\u03c0\u03b9\u03bb\u03bf\u03b3\u03ae. \u03a5\u03c0\u03bf\u03c3\u03c4\u03b7\u03c1\u03af\u03b6\u03b5\u03b9 \u03c0\u03c1\u03bf\u03b3\u03c1\u03b1\u03bc\u03bc\u03b1\u03c4\u03b9\u03b6\u03cc\u03bc\u03b5\u03bd\u03b5\u03c2 \u03c4\u03b1\u03c7\u03cd\u03c4\u03b7\u03c4\u03b5\u03c2 \u03b4\u03bf\u03ba\u03b9\u03bc\u03ae\u03c2, \u03b4\u03b9\u03b1\u03b8\u03ad\u03c4\u03b5\u03b9 \u03ba\u03c5\u03c8\u03ad\u03bb\u03b5\u03c2 \u03c6\u03bf\u03c1\u03c4\u03af\u03bf\u03c5 \u03b1\u03ba\u03c1\u03b9\u03b2\u03b5\u03af\u03b1\u03c2 \u03ba\u03b1\u03b9 \u03ad\u03c7\u03b5\u03b9 \u03c3\u03c7\u03b5\u03b4\u03b9\u03b1\u03c3\u03c4\u03b5\u03af \u03b3\u03b9\u03b1 \u03bd\u03b1 \u03c0\u03bb\u03b7\u03c1\u03bf\u03af \u03c4\u03b9\u03c2 \u03b1\u03c0\u03b1\u03b9\u03c4\u03ae\u03c3\u03b5\u03b9\u03c2 \u03c4\u03bf\u03c5 ASTM D882. \u0395\u03af\u03c4\u03b5 \u03c0\u03c1\u03b1\u03b3\u03bc\u03b1\u03c4\u03bf\u03c0\u03bf\u03b9\u03b5\u03af\u03c4\u03b5 \u03c3\u03c5\u03bd\u03ae\u03b8\u03b7 \u03ad\u03bb\u03b5\u03b3\u03c7\u03bf \u03c0\u03bf\u03b9\u03cc\u03c4\u03b7\u03c4\u03b1\u03c2 \u03b5\u03af\u03c4\u03b5 \u03c0\u03c1\u03bf\u03b7\u03b3\u03bc\u03ad\u03bd\u03b7 \u03ad\u03c1\u03b5\u03c5\u03bd\u03b1 \u03c5\u03bb\u03b9\u03ba\u03ce\u03bd, \u03b1\u03c5\u03c4\u03cc \u03c4\u03bf \u03cc\u03c1\u03b3\u03b1\u03bd\u03bf \u03c0\u03b1\u03c1\u03ad\u03c7\u03b5\u03b9 \u03b1\u03be\u03b9\u03cc\u03c0\u03b9\u03c3\u03c4\u03b1 \u03b4\u03b5\u03b4\u03bf\u03bc\u03ad\u03bd\u03b1.<\/font><\/font><\/p>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full is-resized\"><img decoding=\"async\" width=\"600\" height=\"600\" src=\"https:\/\/www.wrapfilmtest.com\/wp-content\/uploads\/2025\/07\/TST-01-Tensile-Tester-.webp\" alt=\"\u03c4\u03c5\u03bb\u03af\u03be\u03c4\u03b5 \u03c4\u03b1\u03b9\u03bd\u03af\u03b1 \u03c4\u03ad\u03bd\u03c4\u03c9\u03c3\u03b7\u03c2\" class=\"wp-image-1208\" style=\"width:327px;height:auto\" srcset=\"https:\/\/www.wrapfilmtest.com\/wp-content\/uploads\/2025\/07\/TST-01-Tensile-Tester-.webp 600w, https:\/\/www.wrapfilmtest.com\/wp-content\/uploads\/2025\/07\/TST-01-Tensile-Tester--400x400.webp 400w, https:\/\/www.wrapfilmtest.com\/wp-content\/uploads\/2025\/07\/TST-01-Tensile-Tester--280x280.webp 280w, https:\/\/www.wrapfilmtest.com\/wp-content\/uploads\/2025\/07\/TST-01-Tensile-Tester--12x12.webp 12w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><figcaption class=\"wp-element-caption\">TST-01 \u0395\u03bb\u03b5\u03b3\u03ba\u03c4\u03ae\u03c2 \u03b5\u03c6\u03b5\u03bb\u03ba\u03c5\u03c3\u03bc\u03bf\u03cd \u03ba\u03b1\u03b9 \u03b5\u03c0\u03b9\u03bc\u03ae\u03ba\u03c5\u03bd\u03c3\u03b7\u03c2<\/figcaption><\/figure>\n<\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">\u03a3\u03cd\u03bd\u03b1\u03c8\u03b7<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0391\u03ba\u03c1\u03b9\u03b2\u03ae\u03c2 \u03b4\u03bf\u03ba\u03b9\u03bc\u03ae \u03c4\u03c9\u03bd <strong>\u03c4\u03c5\u03bb\u03af\u03be\u03c4\u03b5 \u03c4\u03b1\u03b9\u03bd\u03af\u03b1 \u03c4\u03ad\u03bd\u03c4\u03c9\u03c3\u03b7\u03c2<\/strong> \u03b4\u03b9\u03b1\u03c3\u03c6\u03b1\u03bb\u03af\u03b6\u03b5\u03b9 \u03c4\u03b7\u03bd \u03b1\u03be\u03b9\u03bf\u03c0\u03b9\u03c3\u03c4\u03af\u03b1 \u03c4\u03bf\u03c5 \u03c0\u03c1\u03bf\u03ca\u03cc\u03bd\u03c4\u03bf\u03c2, \u03c4\u03b7 \u03c3\u03c5\u03bc\u03bc\u03cc\u03c1\u03c6\u03c9\u03c3\u03b7 \u03bc\u03b5 \u03c4\u03b9\u03c2 \u03ba\u03b1\u03bd\u03bf\u03bd\u03b9\u03c3\u03c4\u03b9\u03ba\u03ad\u03c2 \u03b4\u03b9\u03b1\u03c4\u03ac\u03be\u03b5\u03b9\u03c2 \u03ba\u03b1\u03b9 \u03c4\u03b7\u03bd \u03b9\u03ba\u03b1\u03bd\u03bf\u03c0\u03bf\u03af\u03b7\u03c3\u03b7 \u03c4\u03bf\u03c5 \u03c4\u03b5\u03bb\u03b9\u03ba\u03bf\u03cd \u03c7\u03c1\u03ae\u03c3\u03c4\u03b7. \u0391\u03ba\u03bf\u03bb\u03bf\u03c5\u03b8\u03ce\u03bd\u03c4\u03b1\u03c2 \u03c4\u03b9\u03c2 \u03b4\u03b9\u03b1\u03b4\u03b9\u03ba\u03b1\u03c3\u03af\u03b5\u03c2 ASTM D882 \u03b3\u03b9\u03b1 <strong>\u03b4\u03bf\u03ba\u03b9\u03bc\u03ad\u03c2 \u03b1\u03bd\u03c4\u03bf\u03c7\u03ae\u03c2 \u03c3\u03b5 \u03b5\u03c6\u03b5\u03bb\u03ba\u03c5\u03c3\u03bc\u03cc<\/strong>, <strong>\u03b4\u03bf\u03ba\u03b9\u03bc\u03ad\u03c2 \u03b5\u03c0\u03b9\u03bc\u03ae\u03ba\u03c5\u03bd\u03c3\u03b7\u03c2<\/strong>, \u03ba\u03b1\u03b9 \u03ac\u03bb\u03bb\u03b1 <strong>\u03b4\u03bf\u03ba\u03b9\u03bc\u03ad\u03c2 \u03c4\u03b1\u03b9\u03bd\u03b9\u03ce\u03bd \u03c4\u03b5\u03bd\u03c4\u03ce\u03bc\u03b1\u03c4\u03bf\u03c2<\/strong>, \u03bf\u03b9 \u03ba\u03b1\u03c4\u03b1\u03c3\u03ba\u03b5\u03c5\u03b1\u03c3\u03c4\u03ad\u03c2 \u03bc\u03c0\u03bf\u03c1\u03bf\u03cd\u03bd \u03bd\u03b1 \u03b5\u03c0\u03b9\u03ba\u03c5\u03c1\u03ce\u03c3\u03bf\u03c5\u03bd \u03c4\u03b7\u03bd \u03b1\u03c0\u03cc\u03b4\u03bf\u03c3\u03b7 \u03c4\u03b7\u03c2 \u03bc\u03b5\u03bc\u03b2\u03c1\u03ac\u03bd\u03b7\u03c2 \u03c3\u03b5 \u03c0\u03c1\u03b1\u03b3\u03bc\u03b1\u03c4\u03b9\u03ba\u03ad\u03c2 \u03c3\u03c5\u03bd\u03b8\u03ae\u03ba\u03b5\u03c2. \u039c\u03b5 \u03c4\u03b7\u03bd \u03c5\u03c0\u03bf\u03c3\u03c4\u03ae\u03c1\u03b9\u03be\u03b7 \u03c0\u03c1\u03bf\u03b7\u03b3\u03bc\u03ad\u03bd\u03c9\u03bd \u03bf\u03c1\u03b3\u03ac\u03bd\u03c9\u03bd \u03cc\u03c0\u03c9\u03c2 \u03c4\u03bf <strong>TST-01 \u03b1\u03c0\u03cc <a href=\"https:\/\/www.wrapfilmtest.com\/el\/\">\u039a\u03c5\u03c4\u03c4\u03b1\u03c1\u03b9\u03ba\u03ac \u03cc\u03c1\u03b3\u03b1\u03bd\u03b1<\/a><\/strong>, \u03bf\u03b9 \u03b4\u03bf\u03ba\u03b9\u03bc\u03ad\u03c2 \u03b1\u03c5\u03c4\u03ad\u03c2 \u03ba\u03b1\u03b8\u03af\u03c3\u03c4\u03b1\u03bd\u03c4\u03b1\u03b9 \u03cc\u03c7\u03b9 \u03bc\u03cc\u03bd\u03bf \u03b1\u03be\u03b9\u03cc\u03c0\u03b9\u03c3\u03c4\u03b5\u03c2 \u03b1\u03bb\u03bb\u03ac \u03ba\u03b1\u03b9 \u03b1\u03c0\u03bf\u03c4\u03b5\u03bb\u03b5\u03c3\u03bc\u03b1\u03c4\u03b9\u03ba\u03ad\u03c2 \u03ba\u03b1\u03b9 \u03b5\u03c0\u03b5\u03ba\u03c4\u03ac\u03c3\u03b9\u03bc\u03b5\u03c2 \u03b3\u03b9\u03b1 \u03c4\u03b9\u03c2 \u03b1\u03bd\u03ac\u03b3\u03ba\u03b5\u03c2 \u03c4\u03b7\u03c2 \u03c0\u03b1\u03c1\u03b1\u03b3\u03c9\u03b3\u03ae\u03c2.<\/p>","protected":false},"excerpt":{"rendered":"<p>\u0395\u03b9\u03c3\u03b1\u03b3\u03c9\u03b3\u03ae \u03c3\u03c4\u03b9\u03c2 \u03b4\u03bf\u03ba\u03b9\u03bc\u03ad\u03c2 \u03c4\u03b1\u03b9\u03bd\u03b9\u03ce\u03bd stretch Wrap \u0397 \u03c4\u03b1\u03b9\u03bd\u03af\u03b1 stretch Wrap \u03c0\u03b1\u03af\u03b6\u03b5\u03b9 \u03ba\u03c1\u03af\u03c3\u03b9\u03bc\u03bf \u03c1\u03cc\u03bb\u03bf \u03c3\u03c4\u03b7 \u03c3\u03c5\u03c3\u03ba\u03b5\u03c5\u03b1\u03c3\u03af\u03b1 \u03ba\u03b1\u03b9 \u03c4\u03b7\u03bd \u03b5\u03c6\u03bf\u03b4\u03b9\u03b1\u03c3\u03c4\u03b9\u03ba\u03ae. \u0397 \u03b9\u03ba\u03b1\u03bd\u03cc\u03c4\u03b7\u03c4\u03ac \u03c4\u03b7\u03c2 \u03bd\u03b1 \u03c4\u03c5\u03bb\u03af\u03b3\u03b5\u03b9 \u03bc\u03b5 \u03b1\u03c3\u03c6\u03ac\u03bb\u03b5\u03b9\u03b1 \u03c4\u03b1 \u03c0\u03c1\u03bf\u03ca\u03cc\u03bd\u03c4\u03b1 \u03b4\u03b9\u03b1\u03c4\u03b7\u03c1\u03ce\u03bd\u03c4\u03b1\u03c2 \u03c0\u03b1\u03c1\u03ac\u03bb\u03bb\u03b7\u03bb\u03b1 \u03c4\u03b7\u03bd \u03b5\u03bb\u03b1\u03c3\u03c4\u03b9\u03ba\u03cc\u03c4\u03b7\u03c4\u03b1, \u03c4\u03b7\u03bd \u03b1\u03bd\u03c4\u03bf\u03c7\u03ae \u03ba\u03b1\u03b9 \u03c4\u03b7\u03bd \u03b1\u03bd\u03b8\u03b5\u03ba\u03c4\u03b9\u03ba\u03cc\u03c4\u03b7\u03c4\u03b1 \u03c5\u03c0\u03cc \u03c0\u03af\u03b5\u03c3\u03b7 \u03b5\u03af\u03bd\u03b1\u03b9 \u03b1\u03c0\u03b1\u03c1\u03b1\u03af\u03c4\u03b7\u03c4\u03b7. \u0393\u03b9\u03b1 \u03bd\u03b1 \u03b4\u03b9\u03b1\u03c3\u03c6\u03b1\u03bb\u03b9\u03c3\u03c4\u03b5\u03af \u03b7 \u03c0\u03bf\u03b9\u03cc\u03c4\u03b7\u03c4\u03b1 \u03ba\u03b1\u03b9 \u03b7 \u03c3\u03c5\u03bd\u03ad\u03c0\u03b5\u03b9\u03b1, \u03bf\u03b9 \u03ba\u03b1\u03c4\u03b1\u03c3\u03ba\u03b5\u03c5\u03b1\u03c3\u03c4\u03ad\u03c2 \u03ba\u03b1\u03b9 \u03bf\u03b9 \u03bf\u03bc\u03ac\u03b4\u03b5\u03c2 \u03b5\u03bb\u03ad\u03b3\u03c7\u03bf\u03c5 \u03c0\u03bf\u03b9\u03cc\u03c4\u03b7\u03c4\u03b1\u03c2 \u03c3\u03c5\u03c7\u03bd\u03ac \u03b2\u03b1\u03c3\u03af\u03b6\u03bf\u03bd\u03c4\u03b1\u03b9 \u03c3\u03c4\u03bf ASTM D882, \u03ad\u03bd\u03b1 \u03b5\u03c5\u03c1\u03ad\u03c9\u03c2 \u03b1\u03c0\u03bf\u03b4\u03b5\u03ba\u03c4\u03cc \u03c0\u03c1\u03cc\u03c4\u03c5\u03c0\u03bf \u03b3\u03b9\u03b1 \u03c4\u03bf\u03bd \u03c0\u03c1\u03bf\u03c3\u03b4\u03b9\u03bf\u03c1\u03b9\u03c3\u03bc\u03cc \u03c4\u03b7\u03c2 [...]","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1202","post","type-post","status-publish","format-standard","hentry","category-wrap-film-test"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How to Test Wrap Stretch Film per ASTM D882 Guidelines - Wrap Film Test<\/title>\n<meta name=\"description\" content=\"Discover how to perform wrap stretch film testing. Learn about tensile strength test, elongation test, and stretch film test procedures.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wrapfilmtest.com\/el\/wrap-stretch-film\" \/>\n<meta property=\"og:locale\" content=\"el_GR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to Test Wrap Stretch Film per ASTM D882 Guidelines - Wrap Film Test\" \/>\n<meta property=\"og:description\" content=\"Discover how to perform wrap stretch film testing. 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