{"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\/sk\/dart-impact-testing-of-polyethylene-film\/","title":{"rendered":"N\u00e1razov\u00e9 sk\u00fa\u0161ky polyetyl\u00e9novej f\u00f3lie \u0161\u00edpkami: Pr\u00edru\u010dka ASTM D1709"},"content":{"rendered":"<h1 class=\"wp-block-heading\">N\u00e1razov\u00e9 sk\u00fa\u0161ky polyetyl\u00e9novej f\u00f3lie pod\u013ea normy ASTM D1709<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">\u00davod do n\u00e1razovej sk\u00fa\u0161ky polyetyl\u00e9novej f\u00f3lie \u0161\u00edpkami<\/h2>\n\n\n\n<p>Polyetyl\u00e9nov\u00e9 f\u00f3lie sa \u0161iroko pou\u017e\u00edvaj\u00fa pri balen\u00ed v\u010faka svojej odolnosti, pru\u017enosti a n\u00edzkej hmotnosti. Aby sa v\u0161ak zabezpe\u010dila ich funk\u010dnos\u0165 po\u010das prepravy a manipul\u00e1cie, je nevyhnutn\u00e9 pochopi\u0165 ich mechanick\u00e9 spr\u00e1vanie - najm\u00e4 pri n\u00e1hlych n\u00e1razoch.&nbsp;<strong>Sk\u00fa\u0161ka polyetyl\u00e9novej f\u00f3lie n\u00e1razom \u0161\u00edpky<\/strong>&nbsp;pon\u00faka spo\u013eahliv\u00fd sp\u00f4sob hodnotenia odolnosti f\u00f3lie vo\u010di pretrhnutiu pri z\u00e1sahu vo\u013ene padaj\u00facou strelou. Jedn\u00fdm z najuzn\u00e1vanej\u0161\u00edch \u0161tandardov pre toto hodnotenie je&nbsp;<a href=\"https:\/\/www.impacttesting.net\/sk\/astm-d1709\/\"><strong>ASTM D1709<\/strong><\/a>, v ktorom sa definuje metodika a pr\u00edstroj pre&nbsp;<strong>n\u00e1razov\u00fd test \u0161\u00edpkami<\/strong>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Preh\u013ead sk\u00fa\u0161obn\u00fdch met\u00f3d pod\u013ea normy ASTM D1709 a n\u00e1razov\u00fdch \u0161\u00edpok<\/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=\"Tester n\u00e1razu padaj\u00facou \u0161\u00edpkou na platov\u00e9 f\u00f3lie a listy Met\u00f3da A a Met\u00f3da B 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>Norma ASTM D1709 uv\u00e1dza dva \u0161tandardizovan\u00e9 postupy.<strong>Sk\u00fa\u0161obn\u00e1 met\u00f3da A<\/strong>&nbsp;a&nbsp;<strong>Sk\u00fa\u0161obn\u00e1 met\u00f3da B<\/strong>-na ur\u010denie&nbsp;<strong>odolnos\u0165 proti n\u00e1razu<\/strong>&nbsp;plastov\u00fdch f\u00f3li\u00ed. Tieto met\u00f3dy zah\u0155\u0148aj\u00fa p\u00fa\u0161\u0165anie polgu\u013eov\u00fdch \u0161\u00edpok na upnut\u00fa vzorku f\u00f3lie a vyhodnocovanie zlyhania za definovan\u00fdch podmienok.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Sk\u00fa\u0161obn\u00e1 met\u00f3da A<\/strong>\u00a0pou\u017e\u00edva\u00a0<strong>38,10 mm hlava \u0161\u00edpky<\/strong>\u00a0klesol z\u00a0<strong>0,66 metra<\/strong>, uplatnite\u013en\u00e9 na filmy, ktor\u00e9 sa rozbij\u00fa pod\u00a0<strong>50 g a\u017e 6 kg<\/strong>.<\/li>\n\n\n\n<li><strong>Sk\u00fa\u0161obn\u00e1 met\u00f3da B<\/strong>\u00a0pou\u017e\u00edva\u00a0<strong>Hlava \u0161\u00edpky 50,80 mm<\/strong>\u00a0klesol z\u00a0<strong>1,52 metra<\/strong>, vhodn\u00e9 pre\u00a0<strong>0,3 kg a\u017e 6 kg<\/strong>\u00a0\u00farovne vplyvu.<\/li>\n<\/ul>\n\n\n\n<p>Hlavn\u00fdm v\u00fdsledkom je&nbsp;<strong>n\u00e1razov\u00e1 hmotnos\u0165 pri poruche (WF)<\/strong>-hmotnos\u0165, pri ktorej 50% testovan\u00fdch vzoriek zlyh\u00e1, \u010do predstavuje kvantitat\u00edvnu mieru odolnosti f\u00f3lie proti n\u00e1razu.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Nastavenie testu a kondicionovanie vzorky<\/h2>\n\n\n\n<p>Spr\u00e1vna \u00faprava a pr\u00edprava vzorky zabezpe\u010duj\u00fa presnos\u0165 a opakovate\u013enos\u0165 testu. Pod\u013ea normy ASTM D1709:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Stavov\u00e9 filmy<\/strong>\u00a0na adrese\u00a0<strong>23\u00b0C \u00b12\u00b0C<\/strong>\u00a0a\u00a0<strong>50% \u00b110% RH<\/strong>\u00a0minim\u00e1lne na\u00a0<strong>40 hod\u00edn<\/strong>\u00a0pred testovan\u00edm.<\/li>\n\n\n\n<li><strong>Vzorky<\/strong>\u00a0mus\u00ed by\u0165 bez ch\u00fdb (dier, z\u00e1hybov alebo vr\u00e1sok) a dostato\u010dne ve\u013ek\u00fd, aby presahoval tesniace prvky svorky.<\/li>\n\n\n\n<li>Vyberte sk\u00fa\u0161obn\u00fa met\u00f3du (A alebo B) na z\u00e1klade o\u010dak\u00e1van\u00e9ho rozsahu pevnosti f\u00f3lie.<\/li>\n<\/ul>\n\n\n\n<p>Na dosiahnutie spo\u013eahliv\u00fdch v\u00fdsledkov by sa testovanie malo vykon\u00e1va\u0165 v kontrolovanom prostred\u00ed s pou\u017eit\u00edm kalibrovan\u00e9ho a spr\u00e1vne nastaven\u00e9ho zariadenia.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Postup testovania n\u00e1razom \u0161\u00edpok: Schodiskov\u00e1 met\u00f3da vs. skupinov\u00e1 met\u00f3da<\/h2>\n\n\n\n<p>Dve techniky s\u00fa povolen\u00e9 v r\u00e1mci&nbsp;<a href=\"https:\/\/store.astm.org\/d1709-22.html\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">ASTM D1709<\/a>:.&nbsp;<strong>schodisko (hore\/dole)<\/strong>&nbsp;met\u00f3da a&nbsp;<strong>alternat\u00edvna skupina<\/strong>&nbsp;met\u00f3da. Cie\u013eom oboch je n\u00e1js\u0165 hmotnos\u0165 \u0161\u00edpky, ktor\u00e1 sp\u00f4sob\u00ed zlyhanie 50% vzoriek.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Schodiskov\u00e1 met\u00f3da<\/strong>: Po ka\u017edom teste postupne upravte hmotnos\u0165 \u0161\u00edpky pod\u013ea toho, \u010di predch\u00e1dzaj\u00faca vzorka pre\u0161la alebo nepre\u0161la. Testovanie pokra\u010duje, k\u00fdm\u00a0<strong>10 zlyhan\u00ed a 10 nezlyhan\u00ed<\/strong>\u00a0s\u00fa z\u00edskan\u00e9.<\/li>\n\n\n\n<li><strong>Met\u00f3da skupiny<\/strong>: Testovacie vzorky v\u00a0<strong>skupiny po 10<\/strong>\u00a0s rovnakou hmotnos\u0165ou, potom zme\u0148te hmotnos\u0165 \u0161\u00edpky pre \u010fal\u0161iu skupinu. T\u00e1to met\u00f3da vy\u017eaduje aspo\u0148 p\u00e4\u0165 d\u00e1tov\u00fdch bodov v rozsahu od\u00a0<strong>Poruchy 0% a\u017e 100%<\/strong>.<\/li>\n<\/ul>\n\n\n\n<p><strong>WF (hmotnos\u0165 pri poruche vplyvom n\u00e1razu)<\/strong>&nbsp;sa vypo\u010d\u00edta matematicky alebo grafickou interpol\u00e1ciou s cie\u013eom ur\u010di\u0165 hmotnos\u0165, ktor\u00e1 zodpoved\u00e1 miere poruchy 50%.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Pre\u010do je d\u00f4le\u017eit\u00e9 n\u00e1razov\u00e9 testovanie polyetyl\u00e9novej f\u00f3lie<\/h2>\n\n\n\n<p>Tento test simuluje re\u00e1lne scen\u00e1re, ako s\u00fa p\u00e1dy po\u010das prepravy alebo nakladania, a pom\u00e1ha v\u00fdrobcom:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>V\u00fdber vhodnej hr\u00fabky filmu a pr\u00edpravkov<\/li>\n\n\n\n<li>Predpoveda\u0165 v\u00fdkon v ter\u00e9ne<\/li>\n\n\n\n<li>Zabezpe\u010denie ochrany v\u00fdrobku pri preprave<\/li>\n\n\n\n<li>Dodr\u017eiava\u0165\u00a0<strong>priemyseln\u00e9 a regula\u010dn\u00e9 normy<\/strong><\/li>\n<\/ul>\n\n\n\n<p>Pom\u00e1ha tie\u017e pri&nbsp;<strong>zabezpe\u010denie kvality<\/strong>&nbsp;a&nbsp;<strong>V\u00ddSKUM A V\u00ddVOJ<\/strong>&nbsp;identifik\u00e1ciou mechanick\u00fdch nedostatkov pred vstupom obalu do v\u00fdroby alebo dod\u00e1vate\u013esk\u00e9ho re\u0165azca.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">V\u00fdber spr\u00e1vneho zariadenia: FDT-01 Dart Impact Tester od 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=\"N\u00e1razov\u00e9 sk\u00fa\u0161ky polyetyl\u00e9novej f\u00f3lie pod\u013ea normy 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>Vykonanie&nbsp;<strong>sk\u00fa\u0161ka polyetyl\u00e9novej f\u00f3lie n\u00e1razom \u0161\u00edpky<\/strong>&nbsp;v s\u00falade s&nbsp;<strong>ASTM D1709<\/strong>, presnos\u0165 a spo\u013eahlivos\u0165 testovac\u00edch zariaden\u00ed s\u00fa ve\u013emi d\u00f4le\u017eit\u00e9.&nbsp;<strong>Cell Instruments'&nbsp;<a href=\"https:\/\/www.impacttesting.net\/sk\/falling-dart-impact-tester\/\">FDT-01<\/a>&nbsp;Tester n\u00e1razov \u0161\u00edpok<\/strong>&nbsp;je \u0161peci\u00e1lne navrhnut\u00fd na tento \u00fa\u010del a pon\u00faka:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Podpora pre testovacie met\u00f3dy A aj B<\/strong><\/li>\n\n\n\n<li><strong>Nastavite\u013en\u00e1 v\u00fd\u0161ka a hlavice na vyp\u00fa\u0161\u0165anie \u0161\u00edpok<\/strong><\/li>\n\n\n\n<li><strong>Pou\u017e\u00edvate\u013esky pr\u00edvetiv\u00e9 rozhrania<\/strong>\u00a0na r\u00fdchle nastavenie a zaznamen\u00e1vanie \u00fadajov<\/li>\n\n\n\n<li><strong>Vyhovuj\u00faci dizajn<\/strong>\u00a0s normami ASTM a ISO<\/li>\n<\/ul>\n\n\n\n<p>\u010ci u\u017e pracujete v oblasti v\u00fdskumu a v\u00fdvoja obalov, kontroly kvality alebo vo v\u00fdrobe.&nbsp;<strong>FDT-01<\/strong>&nbsp;zabezpe\u010duje konzistentn\u00e9 a reprodukovate\u013en\u00e9 v\u00fdsledky, ktor\u00e9 s\u00fa d\u00f4le\u017eit\u00e9 pre rozhodovanie.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Osved\u010den\u00e9 postupy a \u00favahy<\/h2>\n\n\n\n<p>Maximalizova\u0165 \u00fa\u010dinnos\u0165 testovania n\u00e1razu \u0161\u00edpky:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>V\u017edy\u00a0<strong>overi\u0165 stav hlavy \u0161\u00edpky<\/strong>\u00a0na \u0161krabance alebo opotrebovanie.<\/li>\n\n\n\n<li>Zabezpe\u010denie\u00a0<strong>presn\u00e9 zarovnanie<\/strong>\u00a0\u0161\u00edpky pre stredov\u00fd n\u00e1raz.<\/li>\n\n\n\n<li><strong>Vyhnite sa nadmern\u00e9mu pas\u00edvnemu hlasu<\/strong>\u00a0vo v\u00fdkazn\u00edctve, aby sa zachovala zrozumite\u013enos\u0165.<\/li>\n\n\n\n<li>Systematicky zaznamen\u00e1vajte v\u0161etky v\u00fdsledky, aby ste mohli presne vypo\u010d\u00edta\u0165 WF.<\/li>\n<\/ul>\n\n\n\n<p>Upozor\u0148ujeme, \u017ee&nbsp;<strong>v\u00fdsledky testov s\u00fa ve\u013emi z\u00e1visl\u00e9 od vlastnost\u00ed materi\u00e1lu<\/strong>vr\u00e1tane hr\u00fabky, \u010d\u00edrosti, pr\u00edsad a rovnomernosti. Na zabezpe\u010denie platn\u00e9ho porovn\u00e1vania porovn\u00e1vajte len \u00fadaje z filmov s podobnou \u0161trukt\u00farou a hr\u00fabkou (\u00b125%).<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Z\u00e1ver<\/h2>\n\n\n\n<p>Pochopenie a uplat\u0148ovanie&nbsp;<strong>sk\u00fa\u0161ka polyetyl\u00e9novej f\u00f3lie n\u00e1razom \u0161\u00edpky<\/strong>&nbsp;pomocou&nbsp;<strong>ASTM D1709<\/strong>&nbsp;zabezpe\u010duje, aby obalov\u00e9 materi\u00e1ly sp\u013a\u0148ali pr\u00edsne po\u017eiadavky na odolnos\u0165 proti n\u00e1razu. Pou\u017eit\u00edm \u0161tandardizovan\u00fdch testov a presn\u00fdch pr\u00edstrojov, ako je napr.&nbsp;<strong><a href=\"https:\/\/www.impacttesting.net\/sk\/\">Cell Instruments<\/a>&nbsp;FDT-01<\/strong>, m\u00f4\u017eu odborn\u00edci na balenie s istotou overi\u0165 trvanlivos\u0165 f\u00f3lie, zn\u00ed\u017ei\u0165 straty v\u00fdrobkov a zv\u00fd\u0161i\u0165 spokojnos\u0165 koncov\u00fdch pou\u017e\u00edvate\u013eov.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u010casto kladen\u00e9 ot\u00e1zky<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u00a0\u010co sa meria pri sk\u00fa\u0161ke n\u00e1razom \u0161\u00edpky v polyetyl\u00e9nov\u00fdch f\u00f3li\u00e1ch?<\/strong><br>Meria energiu potrebn\u00fa na sp\u00f4sobenie zlyhania (pretrhnutia) f\u00f3lie pod vo\u013ene padaj\u00facou strelou, vyjadren\u00fa ako hmotnos\u0165 sp\u00f4sobuj\u00faca zlyhanie 50%.<\/li>\n\n\n\n<li><strong>\u00a0Ak\u00fd je rozdiel medzi sk\u00fa\u0161obnou met\u00f3dou A a B v norme ASTM D1709?<\/strong><br>Pri met\u00f3de A sa pou\u017e\u00edva men\u0161ia \u0161ipka (38,10 mm), ktor\u00e1 pad\u00e1 z v\u00fd\u0161ky 0,66 m, zatia\u013e \u010do pri met\u00f3de B sa pou\u017e\u00edva v\u00e4\u010d\u0161ia \u0161ipka (50,80 mm) z v\u00fd\u0161ky 1,52 m, \u010do pokr\u00fdva r\u00f4zne rozsahy pevnosti f\u00f3lie.<\/li>\n\n\n\n<li><strong>\u00a0Pre\u010do sa pri testovan\u00ed n\u00e1razu \u0161\u00edpky \u010dasto uprednost\u0148uje schodiskov\u00e1 met\u00f3da?<\/strong><br>V porovnan\u00ed so skupinov\u00fdm testovan\u00edm s pevnou hmotnos\u0165ou pon\u00faka \u00fa\u010dinnej\u0161ie stanovenie hmotnosti pri poruche 50% s men\u0161\u00edm po\u010dtom vzoriek.<\/li>\n\n\n\n<li><strong>\u00a0Ako m\u00e1m upravi\u0165 vzorky polyetyl\u00e9novej f\u00f3lie pred testovan\u00edm?<\/strong><br>Kondicionujte pri teplote 23 \u00b0C \u00b12 \u00b0C a relat\u00edvnej vlhkosti 50% \u00b110% najmenej 40 hod\u00edn, aby sa vlastnosti filmu pred testovan\u00edm stabilizovali.<\/li>\n\n\n\n<li><strong>\u00a0Mo\u017eno porovna\u0165 v\u00fdsledky n\u00e1razu \u0161\u00edpok medzi r\u00f4znymi typmi f\u00f3li\u00ed?<\/strong><br>Porovn\u00e1va\u0165 by sa mali len filmy s podobnou \u0161trukt\u00farou a hr\u00fabkou (v rozmedz\u00ed \u00b125%), preto\u017ee zlo\u017eenie a hr\u00fabka v\u00fdrazne ovplyv\u0148uj\u00fa n\u00e1razov\u00e9 vlastnosti.<\/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\/sk\/wp-json\/wp\/v2\/posts\/100","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.impacttesting.net\/sk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.impacttesting.net\/sk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.impacttesting.net\/sk\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.impacttesting.net\/sk\/wp-json\/wp\/v2\/comments?post=100"}],"version-history":[{"count":2,"href":"https:\/\/www.impacttesting.net\/sk\/wp-json\/wp\/v2\/posts\/100\/revisions"}],"predecessor-version":[{"id":105,"href":"https:\/\/www.impacttesting.net\/sk\/wp-json\/wp\/v2\/posts\/100\/revisions\/105"}],"wp:attachment":[{"href":"https:\/\/www.impacttesting.net\/sk\/wp-json\/wp\/v2\/media?parent=100"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.impacttesting.net\/sk\/wp-json\/wp\/v2\/categories?post=100"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.impacttesting.net\/sk\/wp-json\/wp\/v2\/tags?post=100"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}