{"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\/lt\/standard\/astm-d3420\/","title":{"rendered":"ASTM D3420"},"content":{"rendered":"<h2 class=\"wp-block-heading\">ASTM D3420 standarto supratimas ir jo svarba<\/h2>\n\n\n\n<p>ASTM D3420 yra pla\u010diai pripa\u017eintas standartas, naudojamas nustatyti <em data-start=\"507\" data-end=\"561\">plastikini\u0173 pl\u0117velini\u0173 med\u017eiag\u0173 atsparumas \u0161vytuokl\u0117s sm\u016bgiams<\/em>. Ji imituoja realias sm\u016bgi\u0173 s\u0105lygas, kad b\u016bt\u0173 galima \u012fvertinti pl\u0117vel\u0117s tvirtum\u0105, ypa\u010d pakuo\u010di\u0173, medicinos ir plataus vartojimo preki\u0173 srityse. \u0160iame vadove paai\u0161kinama, kaip atlikti bandym\u0105 naudojant <strong data-start=\"760\" data-end=\"791\">Pl\u0117vel\u0117s \u0161vytuokl\u0117s sm\u016bgio testeris<\/strong>, pvz. <strong data-start=\"805\" data-end=\"838\">Cell Instruments modelis <a href=\"https:\/\/www.packqc.com\/lt\/product-category\/pendulum-impact-tester\/\">PIT-01<\/a><\/strong>, ir pateikia \u012f\u017evalg\u0173 apie <strong data-start=\"871\" data-end=\"894\">Spencerio sm\u016bgio bandymas<\/strong>, proced\u016bras, skai\u010diavimus ir ataskait\u0173 teikimo metodus.<\/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 \u0161vytuokl\u0117s sm\u016bginis testeris plastikini\u0173 pl\u0117veli\u0173 lak\u0161t\u0173 sm\u016bginis testeris\" 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>\u0160ie bandym\u0173 metodai yra labai svarb\u016bs vertinant plastikini\u0173 pl\u0117veli\u0173 tvirtum\u0105 ir kokyb\u0119 ir pla\u010diai taikomi \u012fvairiose pramon\u0117s \u0161akose, \u012fskaitant pakavimo ir maisto saugos sritis.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Plastikin\u0117s pl\u0117vel\u0117s atsparumas \u0161vytuokliniam sm\u016bgiui: Bandym\u0173 ap\u017evalga<\/h2>\n\n\n\n<p>\u0160iuo metodu matuojamas <strong data-start=\"1643\" data-end=\"1665\">energija (d\u017eauliais)<\/strong> reikia, kad pusrutulio formos \u0161vytuokl\u0117s galvut\u0117 supl\u0117\u0161yt\u0173 pl\u0117vel\u0117s pavyzd\u012f, laikom\u0105 tarp apskrit\u0173 spaustuv\u0173. ASTM D3420 standartas apima dvi proced\u016bras:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong data-start=\"1805\" data-end=\"1821\">A proced\u016bra:<\/strong> Naudojama 60 mm diafragma ir 25,4 mm skersmens sm\u016bgin\u0117 galvut\u0117.<\/li>\n\n\n\n<li><strong data-start=\"1884\" data-end=\"1922\">B proced\u016bra (Spencerio sm\u016bgio bandymas):<\/strong> Naudojama 89 mm diafragma ir 19 mm skersmens sm\u016bgin\u0117 galvut\u0117.<\/li>\n<\/ul>\n\n\n\n<p>Abiejose proced\u016brose naudojamas kalibruotas <strong data-start=\"2016\" data-end=\"2047\">Pl\u0117vel\u0117s \u0161vytuokl\u0117s sm\u016bgio testeris<\/strong> sm\u016bgio metu perduodamai energijai matuoti.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Pl\u0117vel\u0117s \u0161vytuokl\u0117s sm\u016bgio testerio s\u0105ranka ir specifikacijos<\/h2>\n\n\n\n<p>Nor\u0117dami veiksmingai atlikti ASTM D3420 bandym\u0105, naudokite sertifikuot\u0105 \u0161vytuoklin\u012f sm\u016bgio tester\u012f, atitinkant\u012f standarto prietaisams keliamus reikalavimus. Cell Instruments\u2019 <strong data-start=\"2308\" data-end=\"2324\">Modelis <a href=\"https:\/\/www.packqc.com\/lt\/product-category\/pendulum-impact-tester\/\">PIT-01<\/a><\/strong> yra idealus pasirinkimas profesionalioms laboratorijoms, nes si\u016blo:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Kelios energijos diapazono parinktys (nuo 0,5 iki 5,0 J)<\/li>\n\n\n\n<li>Analoginiai arba skaitmeniniai rodmenys<\/li>\n\n\n\n<li>O-\u017eiedo spaustuk\u0173 sistema, apsauganti nuo slydimo<\/li>\n\n\n\n<li>Reguliuojami \u0161vytuokl\u0117s svoriai, tinkantys \u012fvairi\u0173 tip\u0173 pl\u0117vel\u0117ms<\/li>\n<\/ul>\n\n\n\n<p>Optimalus tikslumas:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>U\u017etikrinkite, kad \u012franga b\u016bt\u0173 tinkamai i\u0161lyginta.<\/li>\n\n\n\n<li>Prie\u0161 kiekvien\u0105 bandym\u0105 i\u0161nulinkite ciferblat\u0105 arba skaitmenin\u0119 skal\u0119.<\/li>\n\n\n\n<li>Patikrinkite kalibravim\u0105 pagal <a href=\"https:\/\/store.astm.org\/d3420-21.html\" target=\"_blank\" rel=\"noopener nofollow\">ASTM D1922<\/a> arba gamintojo nurodymus.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Bandym\u0173 rezultat\u0173 pateikimas<\/h2>\n\n\n\n<p>J\u016bs\u0173 ataskaitoje tur\u0117t\u0173 b\u016bti:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>M\u0117ginio identifikavimas ir bandymo s\u0105lygos<\/li>\n\n\n\n<li>Taikyta proced\u016bra (A arba B)<\/li>\n\n\n\n<li>I\u0161bandyt\u0173 bandini\u0173 skai\u010dius<\/li>\n\n\n\n<li><strong data-start=\"3672\" data-end=\"3701\">Vidutin\u0117 sm\u016bgio energija (J)<\/strong><\/li>\n\n\n\n<li>Vidutinis bandinio storis<\/li>\n\n\n\n<li><strong data-start=\"3733\" data-end=\"3769\">Standartinis nuokrypis (jei reikia)<\/strong><\/li>\n<\/ul>\n\n\n\n<p>aplinkos duomen\u0173 registravimas, pvz. <strong data-start=\"3805\" data-end=\"3833\">temperat\u016bra ir dr\u0117gm\u0117<\/strong> yra labai svarbus atkuriamumui u\u017etikrinti.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\"Spencer\" sm\u016bgio testo atlikimas<\/h2>\n\n\n\n<p>The <strong data-start=\"2790\" data-end=\"2813\">Spencerio sm\u016bgio bandymas<\/strong> (B proced\u016bra) paprastai naudojama storesn\u0117ms arba patvaresn\u0117ms pl\u0117vel\u0117ms. Pateikiame trump\u0105 \u017eingsn\u012f po \u017eingsnio:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong data-start=\"2913\" data-end=\"2936\">B\u016bkl\u0117s pavyzd\u017eiai<\/strong> iki 23 \u00b1 2 \u00b0C ir 50 \u00b1 10% RH.<\/li>\n\n\n\n<li><strong data-start=\"2969\" data-end=\"2990\">I\u0161matuokite stor\u012f<\/strong> tiksliai mikrometru (\u00b10,00025 mm).<\/li>\n\n\n\n<li><strong data-start=\"3038\" data-end=\"3055\">I\u0161kirpkite ir sumontuokite<\/strong> bandinius, naudojant 89 mm diafragm\u0105 ir O-\u017eiedo spaustuk\u0105.<\/li>\n\n\n\n<li><strong data-start=\"3111\" data-end=\"3132\">Pakelkite ir atleiskite<\/strong> \u0161vytuokl\u0119 i\u0161 u\u017efiksuotos pad\u0117ties.<\/li>\n\n\n\n<li><strong data-start=\"3176\" data-end=\"3198\">Steb\u0117ti ir registruoti<\/strong> pl\u0117velei \u012ftr\u016bkti sunaudota energija.<\/li>\n\n\n\n<li><strong data-start=\"3243\" data-end=\"3281\">Pakartokite bent penkiems egzemplioriams<\/strong> ir apskai\u010diuokite vidurk\u012f.<\/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 \u0161vytuokl\u0117s sm\u016bginis testeris plastikini\u0173 pl\u0117veli\u0173 lak\u0161t\u0173 sm\u016bginis testeris\" 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\">Sm\u016bgio energijos apskai\u010diavimas pagal B proced\u016br\u0105:<\/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\">Kur:<\/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 d\u017eauliais<\/li>\n\n\n\n<li><em style=\"font-size: 16px;\" data-start=\"3420\" data-end=\"3423\">R<\/em> = skal\u0117s rodmenys (0-100)<\/li>\n\n\n\n<li><em style=\"font-size: 16px;\" data-start=\"3452\" data-end=\"3455\">C<\/em> = testerio paj\u0117gumas (pvz., 0,17, 0,34, 0,67 J ir t. t.)<\/li>\n<\/ul>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\">Geriausio \u0161vytuoklinio sm\u016bginio testerio pasirinkimas<\/h2>\n\n\n\n<p>Tikslus testavimas <strong data-start=\"4573\" data-end=\"4619\">plastikin\u0117s pl\u0117vel\u0117s atsparumas \u0161vytuokl\u0117s sm\u016bgiams<\/strong> naudojant ASTM D3420, labai svarbu u\u017etikrinti med\u017eiagos veikim\u0105 sud\u0117tingomis s\u0105lygomis. Laikydamiesi nurodyt\u0173 proced\u016br\u0173 ir naudodami patikim\u0105 prietais\u0105, pvz. <strong data-start=\"4788\" data-end=\"4815\"><a href=\"https:\/\/www.packqc.com\/lt\/\">L\u0105steli\u0173 instrumentai<\/a> PIT-01<\/strong>, laboratorijos ir gamintojai gali pasiekti <strong data-start=\"4852\" data-end=\"4908\">pakartojami, tiksl\u016bs ir standartus atitinkantys rezultatai.<\/strong>. Tai padeda u\u017etikrinti produkt\u0173 saug\u0105, pakuo\u010di\u0173 patikimum\u0105 ir atitikt\u012f tarptautiniams standartams.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\n\t\t\t\tSusisiekite su mumis Gaukite ASTM D3420 testavimo sprendim\u0105\t\t\t\t<\/h2>\n\n\n\n<p>ASTM D3420 \u0161vytuokl\u0117s I supratimas ir taikymas<strong data-start=\"4289\" data-end=\"4316\">poveikio bandymo metodas<\/strong> u\u017etikrina plastikini\u0173 pl\u0117veli\u0173 patikimum\u0105 ir saugum\u0105 realiomis s\u0105lygomis. Naudodami patikimus bandym\u0173 proced\u016br\u0173 metodus, specialistai gali u\u017etikrintai \u012fvertinti pl\u0117vel\u0117s atsparum\u0105 sm\u016bgiams, taip pad\u0117dami tobulinti gaminius ir i\u0161laikyti auk\u0161tos kokyb\u0117s standartus.<\/p>\n\n\n\n<p>Daugiau informacijos apie <strong data-start=\"4646\" data-end=\"4673\">Cell Instruments PIT-01<\/strong> arba nor\u0117dami aptarti individualius testavimo poreikius, susisiekite su m\u016bs\u0173 technine komanda dar \u0161iandien!<\/p>","protected":false},"excerpt":{"rendered":"<p>Understanding ASTM D3420 and Its Importance ASTM D3420 is a widely recognized standard used to determine the pendulum impact resistance of plastic film materials. It simulates real-world impact conditions to assess a film&#8217;s toughness, particularly for applications in packaging, medical, and consumer goods. This guide explains how to conduct the test using a film pendulum [&hellip;]<\/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\/lt\/wp-json\/wp\/v2\/standard\/9837","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.packqc.com\/lt\/wp-json\/wp\/v2\/standard"}],"about":[{"href":"https:\/\/www.packqc.com\/lt\/wp-json\/wp\/v2\/types\/standard"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.packqc.com\/lt\/wp-json\/wp\/v2\/media\/10016"}],"wp:attachment":[{"href":"https:\/\/www.packqc.com\/lt\/wp-json\/wp\/v2\/media?parent=9837"}],"wp:term":[{"taxonomy":"standard-category","embeddable":true,"href":"https:\/\/www.packqc.com\/lt\/wp-json\/wp\/v2\/standard-category?post=9837"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}