{"id":100,"date":"2025-12-24T08:27:09","date_gmt":"2025-12-24T08:27:09","guid":{"rendered":"https:\/\/www.impacttesting.net\/?p=100"},"modified":"2025-12-24T08:27:11","modified_gmt":"2025-12-24T08:27:11","slug":"dart-impact-testing-of-polyethylene-film","status":"publish","type":"post","link":"https:\/\/www.impacttesting.net\/lt\/dart-impact-testing-of-polyethylene-film\/","title":{"rendered":"Polietilenin\u0117s pl\u0117vel\u0117s sm\u016bginis bandymas str\u0117l\u0117mis: ASTM D1709 vadovas"},"content":{"rendered":"<h1 class=\"wp-block-heading\">Polietilenin\u0117s pl\u0117vel\u0117s sm\u016bginis bandymas str\u0117l\u0117mis pagal ASTM D1709<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">\u012evadas \u012f polietileno pl\u0117vel\u0117s sm\u016bginio bandymo str\u0117l\u0117mis metod\u0105<\/h2>\n\n\n\n<p>Polietilenin\u0117s pl\u0117vel\u0117s pla\u010diai naudojamos pakuot\u0117ms d\u0117l savo patvarumo, lankstumo ir lengvumo savybi\u0173. Ta\u010diau, norint u\u017etikrinti j\u0173 veikim\u0105 gabenimo ir tvarkymo metu, b\u016btina suprasti j\u0173 mechanin\u0119 elgsen\u0105, ypa\u010d staigaus sm\u016bgio metu.&nbsp;<strong>Polietilenin\u0117s pl\u0117vel\u0117s sm\u016bginis bandymas str\u0117l\u0117mis<\/strong>&nbsp;galima patikimai \u012fvertinti pl\u0117vel\u0117s atsparum\u0105 ply\u0161imui, kai \u012f j\u0105 pataiko laisvai krintanti str\u0117l\u0117. Vienas i\u0161 labiausiai pripa\u017eint\u0173 \u0161io vertinimo standart\u0173 yra&nbsp;<a href=\"https:\/\/www.impacttesting.net\/lt\/astm-d1709\/\"><strong>ASTM D1709<\/strong><\/a>, kuriame apibr\u0117\u017eiama metodika ir aparat\u016bra, skirta&nbsp;<strong>sm\u016bgin\u0117s str\u0117l\u0117s bandymas<\/strong>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">ASTM D1709 ir sm\u016bgini\u0173 str\u0117li\u0173 bandym\u0173 metod\u0173 ap\u017evalga<\/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<iframe title=\"A ir B metodai ASTM D1709 ISO 7765-1 ASTM D1709 ISO 7765-1\" width=\"1020\" height=\"574\" src=\"https:\/\/www.youtube.com\/embed\/a3_9M0x3w7U?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<p>ASTM D1709 apra\u0161o dvi standartizuotas proced\u016bras.<strong>A bandymo metodas<\/strong>&nbsp;ir&nbsp;<strong>Bandymo metodas B<\/strong>-nustatyti&nbsp;<strong>atsparumas sm\u016bgiams<\/strong>&nbsp;plastikini\u0173 pl\u0117veli\u0173. Taikant \u0161iuos metodus pusrutulio formos str\u0117l\u0117 numetama ant u\u017espausto pl\u0117vel\u0117s bandinio ir \u012fvertinamas gedimas nustatytomis s\u0105lygomis.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>A bandymo metodas<\/strong>\u00a0naudoja\u00a0<strong>38,10 mm str\u0117l\u0117s galvut\u0117<\/strong>\u00a0suma\u017e\u0117jo nuo\u00a0<strong>0,66 metro<\/strong>, taikoma filmams, kurie susidaro pagal\u00a0<strong>nuo 50 g iki 6 kg<\/strong>.<\/li>\n\n\n\n<li><strong>Bandymo metodas B<\/strong>\u00a0naudoja\u00a0<strong>50,80 mm str\u0117l\u0117s galvut\u0117<\/strong>\u00a0suma\u017e\u0117jo nuo\u00a0<strong>1,52 metro<\/strong>, tinka\u00a0<strong>nuo 0,3 kg iki 6 kg<\/strong>\u00a0poveikio lygiai.<\/li>\n<\/ul>\n\n\n\n<p>Pagrindinis rezultatas yra&nbsp;<strong>sm\u016bginio gedimo svoris (WF)<\/strong>-mas\u0117, kuriai esant 50% i\u0161bandyt\u0173 bandini\u0173 sugenda - kiekybinis pl\u0117vel\u0117s atsparumo sm\u016bgiams matas.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Bandymo s\u0105ranka ir m\u0117gini\u0173 kondicionavimas<\/h2>\n\n\n\n<p>Tinkamas kondicionavimas ir m\u0117ginio paruo\u0161imas u\u017etikrina bandymo tikslum\u0105 ir pakartojamum\u0105. Pagal ASTM D1709:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>B\u016bkl\u0117s filmai<\/strong>\u00a0adresu\u00a0<strong>23\u00b0C \u00b12\u00b0C<\/strong>\u00a0ir\u00a0<strong>50% \u00b110% RH<\/strong>\u00a0ne trumpiau kaip\u00a0<strong>40 valand\u0173<\/strong>\u00a0prie\u0161 bandym\u0105.<\/li>\n\n\n\n<li><strong>Pavyzd\u017eiai<\/strong>\u00a0turi b\u016bti be defekt\u0173 (skylu\u010di\u0173, rauk\u0161li\u0173 ar rauk\u0161li\u0173) ir pakankamai dideli, kad gal\u0117t\u0173 i\u0161siki\u0161ti u\u017e spaustuko tarpikli\u0173.<\/li>\n\n\n\n<li>Bandymo metod\u0105 (A arba B) pasirinkite atsi\u017evelgdami \u012f numatom\u0105 pl\u0117vel\u0117s stiprumo diapazon\u0105.<\/li>\n<\/ul>\n\n\n\n<p>Kad rezultatai b\u016bt\u0173 patikimi, bandymai turi b\u016bti atliekami kontroliuojamoje aplinkoje, naudojant kalibruot\u0105 ir tinkamai suderint\u0105 \u012frang\u0105.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Sm\u016bginio sm\u016bgio str\u0117lyt\u0117mis bandymo proced\u016bra: Laipt\u0173 metodas ir grupinis metodas.<\/h2>\n\n\n\n<p>Leid\u017eiami du metodai pagal&nbsp;<a href=\"https:\/\/store.astm.org\/d1709-22.html\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">ASTM D1709<\/a>::&nbsp;<strong>laiptai (auk\u0161tyn\/\u017eemyn)<\/strong>&nbsp;metod\u0105 ir&nbsp;<strong>alternatyvi grup\u0117<\/strong>&nbsp;metodas. Abiej\u0173 metod\u0173 tikslas - rasti str\u0117l\u0117s svor\u012f, d\u0117l kurio 50% bandini\u0173 sugenda.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Laipt\u0173 metodas<\/strong>: Po kiekvieno bandymo palaipsniui reguliuokite str\u0117l\u0117s svor\u012f, atsi\u017evelgdami \u012f tai, ar ankstesnis bandinys buvo teigiamas, ar neigiamas. Bandymas t\u0119siamas tol, kol\u00a0<strong>10 nes\u0117kmi\u0173 ir 10 nes\u0117kmi\u0173<\/strong>\u00a0gaunama.<\/li>\n\n\n\n<li><strong>Grup\u0117s metodas<\/strong>: Bandomieji m\u0117giniai\u00a0<strong>grup\u0117s po 10 vienet\u0173<\/strong>\u00a0esant tam pa\u010diam svoriui, tada kitai grupei pakeiskite str\u0117l\u0117s mas\u0119. \u0160iam metodui reikia bent penki\u0173 duomen\u0173 ta\u0161k\u0173 nuo\u00a0<strong>Nuo 0% iki 100% gedim\u0173<\/strong>.<\/li>\n<\/ul>\n\n\n\n<p><strong>WF (sm\u016bginio gedimo svoris)<\/strong>&nbsp;apskai\u010diuojamas matemati\u0161kai arba taikant grafin\u0119 interpoliacij\u0105, siekiant nustatyti svor\u012f, atitinkant\u012f 50% gedim\u0173 da\u017en\u012f.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Kod\u0117l svarbus polietileno pl\u0117vel\u0117s sm\u016bginis bandymas str\u0117l\u0117mis<\/h2>\n\n\n\n<p>\u0160is bandymas imituoja realaus pasaulio scenarijus, pavyzd\u017eiui, kritim\u0105 ve\u017eant ar kraunant, ir padeda gamintojams:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Pasirinkite tinkam\u0105 pl\u0117vel\u0117s stor\u012f ir preparatus<\/li>\n\n\n\n<li>Prognozuoti lauko na\u0161um\u0105<\/li>\n\n\n\n<li>U\u017etikrinti produkto apsaug\u0105 gabenant<\/li>\n\n\n\n<li>Laikykit\u0117s\u00a0<strong>pramon\u0117s ir reguliavimo standartai<\/strong><\/li>\n<\/ul>\n\n\n\n<p>Jis taip pat padeda&nbsp;<strong>kokyb\u0117s u\u017etikrinimas<\/strong>&nbsp;ir&nbsp;<strong>MOKSLINIAI TYRIMAI IR PL\u0116TRA<\/strong>&nbsp;nustatant mechaninius tr\u016bkumus prie\u0161 pakuotei patenkant \u012f gamyb\u0105 ar tiekimo grandin\u0119.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Tinkamos \u012frangos pasirinkimas: FDT-01 sm\u016bginis sm\u016bgio testeris i\u0161 Cell Instruments<\/h2>\n\n\n\n<figure class=\"wp-block-image alignleft size-full\"><img decoding=\"async\" width=\"600\" height=\"600\" src=\"https:\/\/www.impacttesting.net\/wp-content\/uploads\/2025\/12\/Dart-Impact-Testing-of-Polyethylene-Film-per-ASTM-D1709.webp\" alt=\"Polietilenin\u0117s pl\u0117vel\u0117s sm\u016bginis bandymas str\u0117l\u0117mis pagal ASTM D1709\" class=\"wp-image-104\" srcset=\"https:\/\/www.impacttesting.net\/wp-content\/uploads\/2025\/12\/Dart-Impact-Testing-of-Polyethylene-Film-per-ASTM-D1709.webp 600w, https:\/\/www.impacttesting.net\/wp-content\/uploads\/2025\/12\/Dart-Impact-Testing-of-Polyethylene-Film-per-ASTM-D1709-400x400.webp 400w, https:\/\/www.impacttesting.net\/wp-content\/uploads\/2025\/12\/Dart-Impact-Testing-of-Polyethylene-Film-per-ASTM-D1709-280x280.webp 280w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n\n\n\n<p>Vykdyti&nbsp;<strong>polietileno pl\u0117vel\u0117s sm\u016bginis bandymas str\u0117l\u0117mis<\/strong>&nbsp;pagal&nbsp;<strong>ASTM D1709<\/strong>, labai svarbus bandym\u0173 \u012frangos tikslumas ir patikimumas.&nbsp;<strong>Cell Instruments'&nbsp;<a href=\"https:\/\/www.impacttesting.net\/lt\/falling-dart-impact-tester\/\">FDT-01<\/a>&nbsp;Sm\u016bginis sm\u016bginis testeris<\/strong>&nbsp;yra specialiai sukurta \u0161iam tikslui ir si\u016blo:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>A ir B bandym\u0173 metod\u0173 palaikymas<\/strong><\/li>\n\n\n\n<li><strong>Reguliuojamas str\u0117li\u0173 i\u0161leidimo auk\u0161tis ir galvut\u0117s<\/strong><\/li>\n\n\n\n<li><strong>Patogios naudotojo s\u0105sajos<\/strong>\u00a0greitas nustatymas ir duomen\u0173 \u012fra\u0161ymas<\/li>\n\n\n\n<li><strong>Atitinkantis reikalavimus dizainas<\/strong>\u00a0su ASTM ir ISO standartais.<\/li>\n<\/ul>\n\n\n\n<p>Nesvarbu, ar dirbate pakuo\u010di\u0173 tyrim\u0173 ir pl\u0117tros, kokyb\u0117s kontrol\u0117s, ar gamybos srityje.&nbsp;<strong>FDT-01<\/strong>&nbsp;u\u017etikrina, kad gausite nuoseklius, atkuriamus rezultatus, kurie yra labai svarb\u016bs priimant sprendimus.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Geriausia praktika ir svarstymai<\/h2>\n\n\n\n<p>Siekdami padidinti sm\u016bgi\u0173 str\u0117l\u0117mis bandym\u0173 veiksmingum\u0105:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Visada\u00a0<strong>patikrinti str\u0117l\u0117s galvut\u0117s b\u016bkl\u0119<\/strong>\u00a0d\u0117l \u012fbr\u0117\u017eim\u0173 ar nusid\u0117v\u0117jimo.<\/li>\n\n\n\n<li>U\u017etikrinti\u00a0<strong>tikslus derinimas<\/strong>\u00a0str\u0117lyt\u0117s, kad sm\u016bgis b\u016bt\u0173 nukreiptas \u012f centr\u0105.<\/li>\n\n\n\n<li><strong>Venkite pernelyg didelio pasyviosios kalbos kiekio<\/strong>\u00a0ataskaitose, kad b\u016bt\u0173 i\u0161laikytas ai\u0161kumas.<\/li>\n\n\n\n<li>Sistemingai registruokite visus rezultatus, kad gal\u0117tum\u0117te tiksliai apskai\u010diuoti WF.<\/li>\n<\/ul>\n\n\n\n<p>Atkreipkite d\u0117mes\u012f, kad&nbsp;<strong>bandym\u0173 rezultatai labai priklauso nuo med\u017eiagos savybi\u0173.<\/strong>, \u012fskaitant stor\u012f, skaidrum\u0105, priedus ir vienodum\u0105. Kad b\u016bt\u0173 u\u017etikrintas teisingas palyginimas, lyginkite tik pana\u0161ios strukt\u016bros ir storio (\u00b125%) pl\u0117veli\u0173 duomenis.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">I\u0161vada<\/h2>\n\n\n\n<p>Supratimas ir taikymas&nbsp;<strong>polietileno pl\u0117vel\u0117s sm\u016bginis bandymas str\u0117l\u0117mis<\/strong>&nbsp;naudojant&nbsp;<strong>ASTM D1709<\/strong>&nbsp;u\u017etikrina, kad pakavimo med\u017eiagos atitikt\u0173 grie\u017etus atsparumo sm\u016bgiams reikalavimus. Naudojant standartizuotus bandymus ir tikslias priemones, pvz.&nbsp;<strong><a href=\"https:\/\/www.impacttesting.net\/lt\/\">Cell Instruments<\/a>&nbsp;FDT-01<\/strong>, pakavimo specialistai gali dr\u0105siai patvirtinti pl\u0117vel\u0117s ilgaam\u017ei\u0161kum\u0105, suma\u017einti produkt\u0173 nuostolius ir padidinti galutinio vartotojo pasitenkinim\u0105.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">DUK<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u00a0K\u0105 matuoja sm\u016bginio sm\u016bgio \u012f polietileno pl\u0117vel\u0119 bandymas str\u0117l\u0117mis?<\/strong><br>Juo matuojama energija, kurios reikia, kad pl\u0117vel\u0117, veikiama laisvai krintan\u010dios str\u0117l\u0117s, sugest\u0173 (ply\u0161t\u0173), i\u0161rei\u0161kiama svoriu, sukelian\u010diu 50% gedim\u0105.<\/li>\n\n\n\n<li><strong>\u00a0Kuo skiriasi ASTM D1709 A ir B bandymo metodai?<\/strong><br>Taikant A metod\u0105, ma\u017eesn\u0117 (38,10 mm) str\u0117l\u0117 buvo i\u0161mesta i\u0161 0,66 m atstumo, o taikant B metod\u0105 - didesn\u0117 (50,80 mm) str\u0117l\u0117, i\u0161mesta i\u0161 1,52 m atstumo, tod\u0117l pl\u0117vel\u0117s stiprumo intervalai skiriasi.<\/li>\n\n\n\n<li><strong>\u00a0Kod\u0117l atliekant sm\u016bgi\u0173 str\u0117l\u0117mis bandymus da\u017enai pasirenkamas laipt\u0173 metodas?<\/strong><br>Tai leid\u017eia veiksmingiau nustatyti 50% gedimo svor\u012f, naudojant ma\u017eiau bandini\u0173, palyginti su bandymais su fiksuoto svorio grupe.<\/li>\n\n\n\n<li><strong>\u00a0Kaip reik\u0117t\u0173 paruo\u0161ti polietileno pl\u0117vel\u0117s m\u0117ginius prie\u0161 bandym\u0105?<\/strong><br>Prie\u0161 bandym\u0105 bent 40 valand\u0173 palaikykite 23 \u00b0C \u00b12 \u00b0C temperat\u016broje ir 50% \u00b110% santykin\u0117je dr\u0117gm\u0117je, kad stabilizuot\u0173si pl\u0117vel\u0117s savyb\u0117s.<\/li>\n\n\n\n<li><strong>\u00a0Ar galima palyginti skirting\u0173 tip\u0173 pl\u0117veli\u0173 sm\u016bgi\u0173 str\u0117l\u0117mis rezultatus?<\/strong><br>Tur\u0117t\u0173 b\u016bti lyginamos tik pana\u0161ios strukt\u016bros ir storio (\u00b125%) pl\u0117vel\u0117s, nes sud\u0117tis ir storis turi didel\u0119 \u012ftak\u0105 sm\u016bgin\u0117ms savyb\u0117ms.<\/li>\n<\/ol>","protected":false},"excerpt":{"rendered":"<p>Dart Impact Testing of Polyethylene Film per ASTM D1709 Introduction to Dart Impact Testing of Polyethylene Film Polyethylene films are widely used in packaging due to their durability, flexibility, and lightweight characteristics. However, to ensure performance during shipping and handling, understanding their mechanical behavior\u2014particularly under sudden impact\u2014is essential.&nbsp;Dart impact testing of polyethylene film&nbsp;offers a reliable [&#8230;]","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-100","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/www.impacttesting.net\/lt\/wp-json\/wp\/v2\/posts\/100","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.impacttesting.net\/lt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.impacttesting.net\/lt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.impacttesting.net\/lt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.impacttesting.net\/lt\/wp-json\/wp\/v2\/comments?post=100"}],"version-history":[{"count":2,"href":"https:\/\/www.impacttesting.net\/lt\/wp-json\/wp\/v2\/posts\/100\/revisions"}],"predecessor-version":[{"id":105,"href":"https:\/\/www.impacttesting.net\/lt\/wp-json\/wp\/v2\/posts\/100\/revisions\/105"}],"wp:attachment":[{"href":"https:\/\/www.impacttesting.net\/lt\/wp-json\/wp\/v2\/media?parent=100"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.impacttesting.net\/lt\/wp-json\/wp\/v2\/categories?post=100"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.impacttesting.net\/lt\/wp-json\/wp\/v2\/tags?post=100"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}