{"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 class=\"wp-block-paragraph\">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 class=\"wp-block-paragraph\">\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 class=\"wp-block-paragraph\">\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 class=\"wp-block-paragraph\">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 class=\"wp-block-paragraph\">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 class=\"wp-block-paragraph\">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 class=\"wp-block-paragraph\">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 class=\"wp-block-paragraph\">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 class=\"wp-block-paragraph\">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 class=\"wp-block-paragraph\"><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 class=\"wp-block-paragraph\"><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 class=\"wp-block-paragraph\">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 class=\"wp-block-paragraph\">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 class=\"wp-block-paragraph\">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>ASTM D3420 standarto supratimas ir jo svarba ASTM D3420 yra pla\u010diai pripa\u017eintas standartas, naudojamas plastikini\u0173 pl\u0117vel\u0117s med\u017eiag\u0173 atsparumui \u0161vytuokl\u0117s sm\u016bgiams nustatyti. Jis imituoja realias sm\u016bgi\u0173 s\u0105lygas, kad b\u016bt\u0173 \u012fvertintas pl\u0117vel\u0117s atsparumas, ypa\u010d pakuo\u010di\u0173, medicinos ir plataus vartojimo preki\u0173 srityse. \u0160iame vadove paai\u0161kinama, kaip atlikti bandym\u0105 naudojant pl\u0117vel\u0117s \u0161vytuokl\u0119, kad b\u016bt\u0173 galima [...]<\/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}]}}