{"id":9837,"date":"2026-02-24T15:11:44","date_gmt":"2026-02-24T07:11:44","guid":{"rendered":"https:\/\/www.packqc.com\/standard\/astm-d3420-2\/"},"modified":"2026-04-16T09:53:06","modified_gmt":"2026-04-16T01:53:06","slug":"astm-d3420","status":"publish","type":"standard","link":"https:\/\/www.packqc.com\/hr\/standard\/astm-d3420\/","title":{"rendered":"ASTM D3420"},"content":{"rendered":"<h2 class=\"wp-block-heading\">Razumijevanje norme ASTM D3420 i njezine va\u017enosti<\/h2>\n\n\n\n<p>ASTM D3420 je \u0161iroko priznat standard koji se koristi za odre\u0111ivanje <em data-start=\"507\" data-end=\"561\">Otpornost plasti\u010dnih folijskih materijala na udarac klatnom<\/em>. Simulira uvjete udarca iz stvarnog svijeta kako bi se procijenila \u010dvrsto\u0107a folije, osobito za primjenu u pakiranju, medicini i potro\u0161a\u010dkim proizvodima. Ovaj vodi\u010d obja\u0161njava kako provesti test koriste\u0107i <strong data-start=\"760\" data-end=\"791\">film Pendulum testiralo za udarce<\/strong>, kao \u0161to je <strong data-start=\"805\" data-end=\"838\">Cell Instruments model <a href=\"https:\/\/www.packqc.com\/hr\/product-category\/pendulum-impact-tester\/\">PIT-01<\/a><\/strong>, i pru\u017ea uvide u <strong data-start=\"871\" data-end=\"894\">Spencerov test utjecaja<\/strong>, postupci, izra\u010duni i metode izvje\u0161tavanja.<\/p>\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=\"ASTM D3420 pendularni tester udarnog u\u010dinka za plasti\u010dne folije i listove, tester udarnog u\u010dinka\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/vEx4esxMESw?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>Ove metode ispitivanja klju\u010dne su za procjenu \u010dvrsto\u0107e i kvalitete plasti\u010dnih folija te su \u0161iroko prihva\u0107ene u raznim industrijama, uklju\u010duju\u0107i primjene u pakiranju i sigurnosti hrane.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Otpornost plasti\u010dne folije na udarac klatnom: pregled ispitivanja<\/h2>\n\n\n\n<p>Ova metoda mjeri <strong data-start=\"1643\" data-end=\"1665\">energija (u d\u017eulima)<\/strong> potrebno za to da hemisferna glava klatna razbije uzorak filma dr\u017ean izme\u0111u kru\u017enih stega. ASTM D3420 uklju\u010duje dva postupka:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong data-start=\"1805\" data-end=\"1821\">Postupak A:<\/strong> Koristi otvor od 60 mm i udarni glavi\u0107 promjera 25,4 mm.<\/li>\n\n\n\n<li><strong data-start=\"1884\" data-end=\"1922\">Postupak B (Spencerov udarni test):<\/strong> Koristi otvor od 89 mm i udarni glavi\u0107 promjera 19 mm.<\/li>\n<\/ul>\n\n\n\n<p>Oba postupka koriste kalibrirani <strong data-start=\"2016\" data-end=\"2047\">film Pendulum testiralo za udarce<\/strong> mjeriti energiju prenesenu tijekom udara.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Postavka i specifikacije filmskog tester-a za udarni utjecaj<\/h2>\n\n\n\n<p>Da biste u\u010dinkovito proveli ASTM D3420, koristite certificirani pendularni tester udaraca koji zadovoljava zahtjeve standarda za aparate. Cell Instruments\u2019 <strong data-start=\"2308\" data-end=\"2324\">Model <a href=\"https:\/\/www.packqc.com\/hr\/product-category\/pendulum-impact-tester\/\">PIT-01<\/a><\/strong> je idealan izbor za profesionalne laboratorije, nude\u0107i:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Vi\u0161e opcija raspona energije (0,5 do 5,0 J)<\/li>\n\n\n\n<li>Analogni ili digitalni o\u010ditanja<\/li>\n\n\n\n<li>Sustav stezanja O-prstenova za sprje\u010davanje klizanja<\/li>\n\n\n\n<li>Pode\u0161ive utege za klatno za razli\u010dite vrste filma<\/li>\n<\/ul>\n\n\n\n<p>Za optimalnu to\u010dnost:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Osigurajte pravilno niveliranje opreme.<\/li>\n\n\n\n<li>Nulirajte vagu s pokaziva\u010dem ili digitalnu vagu prije svakog testa.<\/li>\n\n\n\n<li>Provjerite kalibraciju prema <a href=\"https:\/\/store.astm.org\/d3420-21.html\" target=\"_blank\" rel=\"noopener nofollow\">ASTM D1922<\/a> ili upute proizvo\u0111a\u010da.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Izvje\u0161tavanje o rezultatima testiranja<\/h2>\n\n\n\n<p>Va\u0161e izvje\u0161\u0107e treba uklju\u010divati:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Identifikacija uzorka i uvjeti ispitivanja<\/li>\n\n\n\n<li>Upotrijebljeni postupak (A ili B)<\/li>\n\n\n\n<li>Broj testiranih uzoraka<\/li>\n\n\n\n<li><strong data-start=\"3672\" data-end=\"3701\">Prosje\u010dna energija udara (J)<\/strong><\/li>\n\n\n\n<li>Prosje\u010dna debljina uzorka<\/li>\n\n\n\n<li><strong data-start=\"3733\" data-end=\"3769\">Standardna devijacija (ako je potrebno)<\/strong><\/li>\n<\/ul>\n\n\n\n<p>Prikupljanje podataka o okoli\u0161u poput <strong data-start=\"3805\" data-end=\"3833\">temperatura i vlaga<\/strong> je klju\u010dno za reproducibilnost.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Provedba Spencerovog testa utjecaja<\/h2>\n\n\n\n<p>The <strong data-start=\"2790\" data-end=\"2813\">Spencerov test utjecaja<\/strong> (Postupak B) se obi\u010dno koristi za deblje ili izdr\u017eljivije filmove. Evo kratkog korak-po-korak:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong data-start=\"2913\" data-end=\"2936\">Priprema uzoraka<\/strong> na 23 \u00b1 2 \u00b0C i 50 \u00b1 10% RH.<\/li>\n\n\n\n<li><strong data-start=\"2969\" data-end=\"2990\">Mjerenje debljine<\/strong> to\u010dno pomo\u0107u mikrometra (\u00b10,00025 mm).<\/li>\n\n\n\n<li><strong data-start=\"3038\" data-end=\"3055\">Izre\u017ei i zalijepi<\/strong> uzorci koriste\u0107i otvor od 89 mm i stezaljku s O-prstenom.<\/li>\n\n\n\n<li><strong data-start=\"3111\" data-end=\"3132\">Podignite i otpustite<\/strong> klatno iz zaklju\u010dane pozicije.<\/li>\n\n\n\n<li><strong data-start=\"3176\" data-end=\"3198\">Promatraj i bilje\u017ei<\/strong> energija apsorbirana za razbijanje filma.<\/li>\n\n\n\n<li><strong data-start=\"3243\" data-end=\"3281\">Ponovite na najmanje pet uzoraka.<\/strong> i izra\u010dunati prosjek.<\/li>\n<\/ol>\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=\"ASTM D3420 pendularni tester udarnog u\u010dinka za plasti\u010dne folije i listove, tester udarnog u\u010dinka\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/vEx4esxMESw?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><strong data-start=\"3310\" data-end=\"3356\">Izra\u010dun energetskog utjecaja za postupak B:<\/strong><\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><em data-start=\"3360\" data-end=\"3379\">E = (R \/ 100) \u00d7 C<\/em><br data-start=\"3379\" data-end=\"3382\">Gdje:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><em style=\"font-size: 16px;\" data-start=\"3393\" data-end=\"3396\">E<\/em> = energija u d\u017eulima<\/li>\n\n\n\n<li><em style=\"font-size: 16px;\" data-start=\"3420\" data-end=\"3423\">R<\/em> = o\u010ditanje ljestvice (0\u2013100)<\/li>\n\n\n\n<li><em style=\"font-size: 16px;\" data-start=\"3452\" data-end=\"3455\">C<\/em> = kapacitet testera (npr. 0,17, 0,34, 0,67 J itd.)<\/li>\n<\/ul>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\">Odabir najboljeg testerice za udarni test<\/h2>\n\n\n\n<p>Precizno testiranje <strong data-start=\"4573\" data-end=\"4619\">Otpornost plasti\u010dne folije na udarac klatna<\/strong> Primjena norme ASTM D3420 klju\u010dna je za osiguranje performansi materijala u zahtjevnim okru\u017eenjima. Slijede\u0107i navedene postupke i koriste\u0107i pouzdani instrument poput <strong data-start=\"4788\" data-end=\"4815\"><a href=\"https:\/\/www.packqc.com\/hr\/\">Stani\u010dni instrumenti<\/a> PIT-01<\/strong>, laboratoriji i proizvo\u0111a\u010di mogu posti\u0107i <strong data-start=\"4852\" data-end=\"4908\">ponovljivi, precizni i u skladu sa standardima rezultati<\/strong>. Ovo poma\u017ee osigurati sigurnost proizvoda, pobolj\u0161ati pouzdanost ambala\u017ee i odr\u017eavati uskla\u0111enost s me\u0111unarodnim standardima.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\n\t\t\t\tKontaktirajte nas i nabavite rje\u0161enje za ispitivanje prema ASTM D3420\t\t\t\t<\/h2>\n\n\n\n<p>Razumijevanje i primjena ASTM D3420 Pendulum I<strong data-start=\"4289\" data-end=\"4316\">Metoda udarnog testa<\/strong> Osigurava pouzdanost i sigurnost plasti\u010dnih folija u stvarnim primjenama. Zahvaljuju\u0107i robusnim postupcima i tehnikama testiranja, stru\u010dnjaci mogu pouzdano procijeniti otpornost folija na udar, \u0161to poma\u017ee u unapre\u0111enju proizvoda i odr\u017eavanju visokih standarda kvalitete.<\/p>\n\n\n\n<p>Za vi\u0161e informacija o <strong data-start=\"4646\" data-end=\"4673\">Cell Instruments PIT-01<\/strong> ili za raspravu o prilago\u0111enim potrebama testiranja, kontaktirajte na\u0161 tehni\u010dki tim danas!<\/p>","protected":false},"excerpt":{"rendered":"<p>Razumijevanje ASTM D3420 i njegove va\u017enosti   ASTM D3420 je \u0161iroko priznat standard koji se koristi za odre\u0111ivanje otpornosti plasti\u010dnih folijskih materijala na udarac pomo\u0107u klatna. Simulira stvarne uvjete udarca kako bi se procijenila \u010dvrsto\u0107a folije, osobito za primjene u pakiranju, medicini i potro\u0161a\u010dkim proizvodima. Ovaj vodi\u010d obja\u0161njava kako provesti test pomo\u0107u klatna za folije [\u2026]<\/p>","protected":false},"featured_media":10016,"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":[611],"class_list":["post-9837","standard","type-standard","status-publish","has-post-thumbnail","hentry","standard-category-astm"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.packqc.com\/hr\/wp-json\/wp\/v2\/standard\/9837","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.packqc.com\/hr\/wp-json\/wp\/v2\/standard"}],"about":[{"href":"https:\/\/www.packqc.com\/hr\/wp-json\/wp\/v2\/types\/standard"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.packqc.com\/hr\/wp-json\/wp\/v2\/media\/10016"}],"wp:attachment":[{"href":"https:\/\/www.packqc.com\/hr\/wp-json\/wp\/v2\/media?parent=9837"}],"wp:term":[{"taxonomy":"standard-category","embeddable":true,"href":"https:\/\/www.packqc.com\/hr\/wp-json\/wp\/v2\/standard-category?post=9837"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}