{"id":59,"date":"2025-12-24T05:33:37","date_gmt":"2025-12-24T05:33:37","guid":{"rendered":"https:\/\/www.impacttesting.net\/?page_id=59"},"modified":"2025-12-24T06:11:16","modified_gmt":"2025-12-24T06:11:16","slug":"astm-d3420","status":"publish","type":"page","link":"https:\/\/www.impacttesting.net\/cs\/astm-d3420\/","title":{"rendered":"ASTM D3420"},"content":{"rendered":"<section class=\"section\" id=\"section_49222658\">\n\t\t<div class=\"bg section-bg fill bg-fill  bg-loaded\" >\n\n\t\t\t\n\t\t\t\n\t\t\t\n\n\t\t<\/div>\n\n\t\t\n\n\t\t<div class=\"section-content relative\">\n\t\t\t\n\n<div class=\"row\"  id=\"row-164820256\">\n\n\n\t<div id=\"col-937543002\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner\" style=\"background-color:rgb(92, 171, 188);\" >\n\t\t\t\n\t\t\t\n\n<div class=\"row\"  id=\"row-500181776\">\n\n\n\t<div id=\"col-652447253\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n\t<div id=\"text-1679230296\" class=\"text\">\n\t\t\n\n<h1>ASTM D1709<\/h1>\n\t\t\n<style>\n#text-1679230296 {\n  font-size: 1.5rem;\n  text-align: center;\n}\n<\/style>\n\t<\/div>\n\t\n\t<div id=\"text-605180169\" class=\"text\">\n\t\t\n\n<h2>Odolnost plastov\u00e9 f\u00f3lie proti kyvadlov\u00e9mu n\u00e1razu<\/h2>\n\t\t\n<style>\n#text-605180169 {\n  text-align: center;\n}\n<\/style>\n\t<\/div>\n\t\n\n\t\t<\/div>\n\t\t\t\t\n<style>\n#col-652447253 > .col-inner {\n  padding: 50px 10px 10px 10px;\n}\n<\/style>\n\t<\/div>\n\n\t\n\n<\/div>\n<div class=\"row align-middle align-center\"  id=\"row-2122419236\">\n\n\n\t<div id=\"col-542047346\" class=\"col medium-11 small-12 large-11\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n<div class=\"row align-middle align-center\"  id=\"row-790667419\">\n\n\n\t<div id=\"col-1819441456\" class=\"col medium-7 small-12 large-7\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n<div class=\"row\"  id=\"row-1605203667\">\n\n\n\t<div id=\"col-2006595073\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner text-center\"  >\n\t\t\t\n\t\t\t\n\n\t<div id=\"text-1525684711\" class=\"text\">\n\t\t\n\n<p>Odolnost proti n\u00e1razu hraje z\u00e1sadn\u00ed roli p\u0159i posuzov\u00e1n\u00ed trvanlivosti a v\u00fdkonnosti materi\u00e1lu p\u0159i n\u00e1hl\u00e9m nam\u00e1h\u00e1n\u00ed. <a href=\"https:\/\/www.impacttesting.net\/cs\/astm-d3420\/\"><strong>ASTM D3420<\/strong><\/a>, standardn\u00ed zku\u0161ebn\u00ed metoda pro <strong>Odolnost plastov\u00e9 f\u00f3lie proti kyvadlov\u00e9mu n\u00e1razu<\/strong>, p\u0159edstavuje z\u00e1kladn\u00ed m\u011b\u0159\u00edtko pro stanoven\u00ed hou\u017eevnatosti plastov\u00fdch f\u00f3li\u00ed. Tato metoda je cenn\u00e1 zejm\u00e9na pro obalov\u00e9 in\u017een\u00fdry, materi\u00e1lov\u00e9 v\u011bdce a odborn\u00edky na kontrolu kvality, kte\u0159\u00ed se sna\u017e\u00ed zajistit, aby f\u00f3lie spl\u0148ovaly po\u017eadavky na vlastnosti specifick\u00e9 pro danou aplikaci.<\/p>\n\t\t\n<style>\n#text-1525684711 {\n  color: rgb(0, 0, 0);\n}\n#text-1525684711 > * {\n  color: rgb(0, 0, 0);\n}\n<\/style>\n\t<\/div>\n\t\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n\t<div id=\"col-1864143833\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner text-center\"  >\n\t\t\t\n\t\t\t\n\n<a href=\"https:\/\/www.impacttesting.net\/cs\/contact-us\/\" class=\"button primary is-outline\"  style=\"border-radius:99px;\">\n    <span>Kontaktujte n\u00e1s<\/span>\n  <i class=\"icon-chat\" aria-hidden=\"true\" ><\/i><\/a>\n\n\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n<\/div>\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n\t<div id=\"col-1357122912\" class=\"col medium-5 small-12 large-5\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n<div class=\"row\"  id=\"row-1428751525\">\n\n\n\t<div id=\"col-574383195\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n\t<div class=\"img has-hover x md-x lg-x y md-y lg-y\" id=\"image_1608271543\">\n\t\t<a class=\"\" href=\"https:\/\/www.impacttesting.net\/cs\/falling-dart-impact-tester\/\" >\t\t\t\t\t\t<div class=\"img-inner dark\" >\n\t\t\t<img decoding=\"async\" width=\"600\" height=\"440\" src=\"https:\/\/www.impacttesting.net\/wp-content\/uploads\/2025\/12\/ASTM-D3420-Pendulum-Impact-Resistance-of-Plastic-Film.webp\" class=\"attachment-large size-large\" alt=\"ASTM D3420 Odolnost plastov\u00e9 f\u00f3lie proti n\u00e1razu kyvadla\" srcset=\"https:\/\/www.impacttesting.net\/wp-content\/uploads\/2025\/12\/ASTM-D3420-Pendulum-Impact-Resistance-of-Plastic-Film.webp 600w, https:\/\/www.impacttesting.net\/wp-content\/uploads\/2025\/12\/ASTM-D3420-Pendulum-Impact-Resistance-of-Plastic-Film-545x400.webp 545w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/>\t\t\t\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a>\t\t\n<style>\n#image_1608271543 {\n  width: 100%;\n}\n<\/style>\n\t<\/div>\n\t\n\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n<\/div>\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n<\/div>\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n<\/div>\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n\n<style>\n#row-164820256 > .col > .col-inner {\n  border-radius: 25px;\n}\n<\/style>\n<\/div>\n\n\t\t<\/div>\n\n\t\t\n<style>\n#section_49222658 {\n  padding-top: 30px;\n  padding-bottom: 30px;\n}\n<\/style>\n\t<\/section>\n\t\n\t<section class=\"section\" id=\"section_2050803596\">\n\t\t<div class=\"bg section-bg fill bg-fill  bg-loaded\" >\n\n\t\t\t\n\t\t\t\n\t\t\t\n\n\t\t<\/div>\n\n\t\t\n\n\t\t<div class=\"section-content relative\">\n\t\t\t\n\n<div class=\"row\"  id=\"row-1521782441\">\n\n\n\t<div id=\"col-2007093169\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n<div class=\"row\"  id=\"row-1863835526\">\n\n\n\t<div id=\"col-1935532001\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n\t<div id=\"text-3137680721\" class=\"text\">\n\t\t\n\n<h2>ASTM D3420 a jej\u00ed v\u00fdznam<\/h2>\n\t\t\n<style>\n#text-3137680721 {\n  font-size: 1.3rem;\n  text-align: center;\n}\n<\/style>\n\t<\/div>\n\t\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n\t<div id=\"col-239852809\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n<p>Norma ASTM D3420 definuje metodu m\u011b\u0159en\u00ed energie pot\u0159ebn\u00e9 k prora\u017een\u00ed vzorku plastov\u00e9 f\u00f3lie pomoc\u00ed kyvadlov\u00e9ho p\u0159\u00edstroje. Kinetick\u00e1 energie kyvadla napodobuje re\u00e1ln\u00e9 s\u00edly, kter\u00fdm m\u016f\u017ee b\u00fdt f\u00f3lie vystavena, nap\u0159\u00edklad p\u0159i balen\u00ed, p\u0159eprav\u011b nebo manipulaci. V\u00fdsledek odr\u00e1\u017e\u00ed dynamick\u00e9 chov\u00e1n\u00ed f\u00f3lie v tahu a poskytuje realisti\u010dt\u011bj\u0161\u00ed hodnocen\u00ed ne\u017e statick\u00e9 tahov\u00e9 zkou\u0161ky.<\/p>\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n\t<div id=\"col-1539888601\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n\t<div id=\"text-1341675684\" class=\"text\">\n\t\t\n\n<h3>ASTM D3420 - Normy ASTM pro r\u00e1zov\u00e9 zkou\u0161ky plast\u016f<\/h3>\n\t\t\n<style>\n#text-1341675684 {\n  text-align: center;\n}\n<\/style>\n\t<\/div>\n\t\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n\t<div id=\"col-239252580\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n<p>Norma ASTM D3420 se zam\u011b\u0159uje zejm\u00e9na na <strong>odolnost proti kyvadlov\u00e9mu n\u00e1razu<\/strong>, co\u017e z n\u011bj \u010din\u00ed jeden z nejv\u00fdznamn\u011bj\u0161\u00edch <strong>Normy ASTM pro r\u00e1zov\u00e9 zkou\u0161ky plast\u016f<\/strong>. Zat\u00edmco jin\u00e9 metody, jako nap\u0159\u00edklad ASTM D1709 nebo D4272, testuj\u00ed podobn\u00e9 vlastnosti, metoda D3420 je obzvl\u00e1\u0161t\u011b v\u00fdhodn\u00e1, proto\u017ee:<\/p>\n<ul>\n<li>Umo\u017e\u0148uje dynamick\u00e9 testov\u00e1n\u00ed p\u0159i vy\u0161\u0161\u00edch rychlostech deformace.<\/li>\n<li>Nab\u00edz\u00ed dva zku\u0161ebn\u00ed postupy (postup A a postup B) s r\u016fzn\u00fdmi velikostmi vzork\u016f a sond.<\/li>\n<li>Poskytuje v\u00fdsledky zalo\u017een\u00e9 na energii, co\u017e umo\u017e\u0148uje nahl\u00e9dnout do iniciace i \u0161\u00ed\u0159en\u00ed poruchy.<\/li>\n<\/ul>\n<p>Tento standard se \u0161iroce pou\u017e\u00edv\u00e1 p\u0159i hodnocen\u00ed film\u016f vyroben\u00fdch z <strong>polyethylen, polypropylen, PET<\/strong>a dal\u0161\u00ed b\u011b\u017en\u00e9 obalov\u00e9 materi\u00e1ly.<\/p>\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n<\/div>\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n<\/div>\n<div class=\"row\"  id=\"row-688141874\">\n\n\n\t<div id=\"col-1328759994\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n<div class=\"row\"  id=\"row-1611912615\">\n\n\n\t<div id=\"col-1713167934\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n\t<div id=\"text-2657878748\" class=\"text\">\n\t\t\n\n<h2>Souvisej\u00edc\u00ed kyvadlov\u00fd n\u00e1razov\u00fd tester<\/h2>\n\t\t\n<style>\n#text-2657878748 {\n  font-size: 1.3rem;\n  text-align: center;\n}\n<\/style>\n\t<\/div>\n\t\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n<\/div>\n<div class=\"row\"  id=\"row-440229709\">\n\n\n\t<div id=\"col-1068512888\" class=\"col medium-6 small-12 large-6\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n<h3>Testovac\u00ed za\u0159\u00edzen\u00ed a nastaven\u00ed<\/h3>\n<p>K proveden\u00ed test\u016f podle normy ASTM D3420 pot\u0159ebujete kalibrovan\u00fd kyvadlov\u00fd n\u00e1razov\u00fd tester. Na str\u00e1nk\u00e1ch <a href=\"https:\/\/www.impacttesting.net\/cs\/pendulum-impact-tester\/\"><strong>PIT-01 kyvadlov\u00e1 r\u00e1zov\u00e1 zkou\u0161e\u010dka<\/strong><\/a> z <strong>Cell Instruments<\/strong> je vynikaj\u00edc\u00edm \u0159e\u0161en\u00edm, kter\u00e9 pln\u011b vyhovuje po\u017eadavk\u016fm normy ASTM D3420 a nab\u00edz\u00ed:<\/p>\n<ul>\n<li>Vysoce p\u0159esn\u00e9 m\u011b\u0159en\u00ed energie (0,5 J a\u017e 5,0 J)<\/li>\n<li>Voliteln\u00e1 z\u00e1va\u017e\u00ed pro flexibiln\u00ed testovac\u00ed rozsahy<\/li>\n<li>Digit\u00e1ln\u00ed ode\u010det pro snadn\u00e9 zaznamen\u00e1v\u00e1n\u00ed dat<\/li>\n<li>Dv\u011b vym\u011bniteln\u00e9 n\u00e1razov\u00e9 hlavy pro postup A (otvor 60 mm) a postup B (otvor 89 mm).<\/li>\n<\/ul>\n<p>Pro zkou\u0161ky s vy\u0161\u0161\u00ed energi\u00ed by m\u011bl b\u00fdt tester namontov\u00e1n na rovn\u00e9m povrchu s \u0159\u00e1dn\u00fdm ukotven\u00edm.<\/p>\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n\t<div id=\"col-1294809135\" class=\"col medium-6 small-12 large-6\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n<h3>P\u0159\u00edprava a \u00faprava vzork\u016f<\/h3>\n<p>Spr\u00e1vn\u00e1 p\u0159\u00edprava vzork\u016f zaji\u0161\u0165uje p\u0159esn\u00e9 a opakovateln\u00e9 v\u00fdsledky. Postupujte podle n\u00e1sleduj\u00edc\u00edch krok\u016f:<\/p>\n<ul>\n<li><strong>Typ vzorku<\/strong>: Pou\u017eijte kruhov\u00e9 nebo \u010dtvercov\u00e9 vzorky f\u00f3lie o pr\u016fm\u011bru 100 mm nebo 100 \u00d7 100 mm.<\/li>\n<li><strong>Tlou\u0161\u0165ka<\/strong>: Zm\u011b\u0159te mikrometrem s p\u0159esnost\u00ed na 0,00125 mm.<\/li>\n<li><strong>Kondice<\/strong>: Vzorky se p\u0159edem p\u0159ipravuj\u00ed p\u0159i teplot\u011b 23 \u00b1 2 \u00b0C a relativn\u00ed vlhkosti 50 \u00b1 10% (podle normy ASTM D618) po dobu nejm\u00e9n\u011b 40 hodin.<\/li>\n<\/ul>\n<p>Zajist\u011bte, aby vzorky byly <strong>bez z\u00e1hyb\u016f, defekt\u016f nebo nerovnom\u011brn\u00e9 tlou\u0161\u0165ky.<\/strong>, co\u017e by mohlo zkreslit v\u00fdsledky.<\/p>\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n<\/div>\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n<\/div>\n<div class=\"row\"  id=\"row-678774547\">\n\n\n\t<div id=\"col-80749220\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n<div class=\"row\"  id=\"row-1969044383\">\n\n\n\t<div id=\"col-353814608\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n<div class=\"row\"  id=\"row-768416376\">\n\n\n\t<div id=\"col-679772276\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n\t<div id=\"text-4074731906\" class=\"text\">\n\t\t\n\n<h2>P\u0159ehled postup\u016f kyvadlov\u00fdch n\u00e1razov\u00fdch zkou\u0161ek<\/h2>\n\t\t\n<style>\n#text-4074731906 {\n  font-size: 1.3rem;\n  text-align: center;\n}\n<\/style>\n\t<\/div>\n\t\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n<\/div>\n<div class=\"row align-bottom align-center\"  id=\"row-880955910\">\n\n\n\t<div id=\"col-1401889130\" class=\"col medium-7 small-12 large-7\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n<ol>\n<li><strong>Upn\u011bte vzorek<\/strong> mezi dv\u011bma kruhov\u00fdmi deskami.<\/li>\n<li><strong>Zvedn\u011bte a zajist\u011bte kyvadlo.<\/strong> do v\u00fdchoz\u00ed polohy.<\/li>\n<li><strong>Nulov\u00e1n\u00ed ode\u010dtu<\/strong> a zkontrolujte spr\u00e1vn\u00e9 se\u0159\u00edzen\u00ed.<\/li>\n<li><strong>Uvoln\u011bte kyvadlo<\/strong> k n\u00e1razu do st\u0159edu vzorku.<\/li>\n<li><strong>P\u0159e\u010dt\u011bte si hodnotu energie<\/strong> z digit\u00e1ln\u00edho nebo analogov\u00e9ho voli\u010de.<\/li>\n<\/ol>\n<p>Tento test opakujte alespo\u0148 na p\u011bti vzorc\u00edch, abyste z\u00edskali pr\u016fm\u011brnou hodnotu pro hl\u00e1\u0161en\u00ed.<\/p>\n<p>Pozn\u00e1mka: Pokud kyvadlo neproraz\u00ed f\u00f3lii, zvy\u0161te energii n\u00e1razu p\u0159id\u00e1n\u00edm pomocn\u00fdch z\u00e1va\u017e\u00ed nebo pou\u017eit\u00edm ten\u010d\u00edho vzorku.<\/p>\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n\t<div id=\"col-662191061\" class=\"col medium-5 small-12 large-5\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n<div class=\"video video-fit mb\" style=\"padding-top:56.25%;\"><iframe title=\"ASTM D3420 kyvadlov\u00fd n\u00e1razov\u00fd tester pro plastov\u00e9 f\u00f3lie N\u00e1razov\u00fd tester pro plastov\u00e9 f\u00f3lie\" width=\"1020\" height=\"574\" 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\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n<\/div>\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n<\/div>\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n<\/div>\n<div class=\"row\"  id=\"row-1235056608\">\n\n\n\t<div id=\"col-505346240\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n<div class=\"row\"  id=\"row-333692976\">\n\n\n\t<div id=\"col-836235805\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n<div class=\"row\"  id=\"row-1076953151\">\n\n\n\t<div id=\"col-983557917\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n\t<div id=\"text-1632560875\" class=\"text\">\n\t\t\n\n<h2>Interpretace dat a anal\u00fdza v\u00fdsledk\u016f<\/h2>\n\t\t\n<style>\n#text-1632560875 {\n  font-size: 1.3rem;\n  text-align: center;\n}\n<\/style>\n\t<\/div>\n\t\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n<\/div>\n<div class=\"row align-middle align-center\"  id=\"row-2069482461\">\n\n\n\t<div id=\"col-1592253521\" class=\"col medium-5 small-12 large-5\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n<ol>\n<li>Kone\u010dn\u00fd v\u00fdsledek p\u0159edstavuje energii (v joulech) pot\u0159ebnou k prora\u017een\u00ed f\u00f3lie. Jedn\u00e1 se o p\u0159\u00edmou m\u00edru odolnosti materi\u00e1lu proti n\u00e1razu. Vy\u0161\u0161\u00ed hodnoty ozna\u010duj\u00ed odoln\u011bj\u0161\u00ed f\u00f3lie.<\/li>\n<li>P\u0159i porovn\u00e1v\u00e1n\u00ed materi\u00e1l\u016f nebo \u0161ar\u017e\u00ed je z\u00e1sadn\u00ed zajistit shodnou tlou\u0161\u0165ku, podm\u00ednky prost\u0159ed\u00ed a nastaven\u00ed svorek, aby se eliminovala variabilita.<\/li>\n<\/ol>\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n\t<div id=\"col-1839260454\" class=\"col medium-5 small-12 large-5\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n\t<div class=\"img has-hover x md-x lg-x y md-y lg-y\" id=\"image_258274643\">\n\t\t\t\t\t\t\t\t<div class=\"img-inner dark\" >\n\t\t\t<img decoding=\"async\" width=\"600\" height=\"440\" src=\"https:\/\/www.impacttesting.net\/wp-content\/uploads\/2025\/12\/ASTM-D3420-Pendulum-Impact-Resistance-of-Plastic-Film.webp\" class=\"attachment-large size-large\" alt=\"ASTM D3420 Odolnost plastov\u00e9 f\u00f3lie proti n\u00e1razu kyvadla\" srcset=\"https:\/\/www.impacttesting.net\/wp-content\/uploads\/2025\/12\/ASTM-D3420-Pendulum-Impact-Resistance-of-Plastic-Film.webp 600w, https:\/\/www.impacttesting.net\/wp-content\/uploads\/2025\/12\/ASTM-D3420-Pendulum-Impact-Resistance-of-Plastic-Film-545x400.webp 545w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/>\t\t\t\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\n<style>\n#image_258274643 {\n  width: 100%;\n}\n<\/style>\n\t<\/div>\n\t\n\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n<\/div>\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n<\/div>\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n<\/div>\n\n\t\t<\/div>\n\n\t\t\n<style>\n#section_2050803596 {\n  padding-top: 30px;\n  padding-bottom: 30px;\n}\n<\/style>\n\t<\/section>\n\t\n\t<section class=\"section\" id=\"section_2090971467\">\n\t\t<div class=\"bg section-bg fill bg-fill  bg-loaded\" >\n\n\t\t\t\n\t\t\t\n\t\t\t\n\n\t\t<\/div>\n\n\t\t\n\n\t\t<div class=\"section-content relative\">\n\t\t\t\n\n<div class=\"row\"  id=\"row-529504858\">\n\n\n\t<div id=\"col-1983952272\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n<div class=\"row align-center\"  id=\"row-460625513\">\n\n\n\t<div id=\"col-7589176\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n\t<div id=\"text-1337195980\" class=\"text\">\n\t\t\n\n<h2>Pro\u010d si vybrat Impacttesting.net?<br \/>PIT-01 kyvadlov\u00e1 r\u00e1zov\u00e1 zkou\u0161e\u010dka<\/h2>\n\t\t\n<style>\n#text-1337195980 {\n  font-size: 1.4rem;\n  text-align: center;\n}\n<\/style>\n\t<\/div>\n\t\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n\t<div id=\"col-1340007844\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\n<p>Na str\u00e1nk\u00e1ch <a href=\"https:\/\/www.impacttesting.net\/cs\/pendulum-impact-tester\/\"><strong>PIT-01 kyvadlov\u00e1 r\u00e1zov\u00e1 zkou\u0161e\u010dka<\/strong><\/a> od Impacttesting.net je d\u00edky pokro\u010dil\u00e9 technice a u\u017eivatelsky p\u0159\u00edv\u011btiv\u00e9mu rozhran\u00ed ide\u00e1ln\u00ed pro:<\/p>\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n\t<div id=\"col-1519438201\" class=\"col medium-7 small-12 large-7\"  >\n\t\t\t\t<div class=\"col-inner text-center\"  >\n\t\t\t\n\t\t\t\n\n\t<div id=\"text-3321224702\" class=\"text\">\n\t\t\n\n<p>Kontrola kvality obalov\u00fdch f\u00f3li\u00ed<br \/>Laboratorn\u00ed testov\u00e1n\u00ed v\u00fdzkumu a v\u00fdvoje<br \/>Soulad s <a href=\"https:\/\/www.impacttesting.net\/cs\/astm-d3420\/\"><strong>ASTM D3420<\/strong><\/a> a souvisej\u00edc\u00ed normy<\/p>\n\t\t\n<style>\n#text-3321224702 {\n  font-size: 1.1rem;\n  line-height: 1.3;\n}\n<\/style>\n\t<\/div>\n\t\n\t<div id=\"text-958682036\" class=\"text\">\n\t\t\n\n<p>P\u0159ijet\u00edm PIT-01 z\u00edskaj\u00ed u\u017eivatel\u00e9 d\u016fv\u011bru v <strong>p\u0159esnost, opakovatelnost a \u00fa\u010dinnost<\/strong> jejich proces\u016f testov\u00e1n\u00ed dopad\u016f.<\/p>\n\t\t\n<style>\n#text-958682036 {\n  font-size: 1.1rem;\n}\n<\/style>\n\t<\/div>\n\t\n<a href=\"https:\/\/www.impacttesting.net\/cs\/contact-us\/\" class=\"button primary is-outline\"  style=\"border-radius:99px;\">\n    <span>Kontaktujte n\u00e1s<\/span>\n  <i class=\"icon-chat\" aria-hidden=\"true\" ><\/i><\/a>\n\n\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n\t<div id=\"col-1044429247\" class=\"col medium-4 small-12 large-4\"  >\n\t\t\t\t<div class=\"col-inner text-center\"  >\n\t\t\t\n\t\t\t\n\n\n<div class=\"wpcf7 no-js\" id=\"wpcf7-f10-o1\" lang=\"en-US\" dir=\"ltr\" data-wpcf7-id=\"10\">\n<div class=\"screen-reader-response\"><p role=\"status\" aria-live=\"polite\" aria-atomic=\"true\"><\/p> <ul><\/ul><\/div>\n<form action=\"\/cs\/wp-json\/wp\/v2\/pages\/59#wpcf7-f10-o1\" method=\"post\" class=\"wpcf7-form init\" aria-label=\"Contact form\" novalidate=\"novalidate\" data-status=\"init\" 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value=\"cs\"\/><\/form>\n<\/div>\n\n\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n<\/div>\n\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n<\/div>\n\n\t\t<\/div>\n\n\t\t\n<style>\n#section_2090971467 {\n  padding-top: 30px;\n  padding-bottom: 30px;\n  background-color: rgb(232, 234, 241);\n}\n<\/style>\n\t<\/section>","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"page-blank.php","meta":{"footnotes":""},"class_list":["post-59","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.impacttesting.net\/cs\/wp-json\/wp\/v2\/pages\/59","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.impacttesting.net\/cs\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.impacttesting.net\/cs\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.impacttesting.net\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.impacttesting.net\/cs\/wp-json\/wp\/v2\/comments?post=59"}],"version-history":[{"count":5,"href":"https:\/\/www.impacttesting.net\/cs\/wp-json\/wp\/v2\/pages\/59\/revisions"}],"predecessor-version":[{"id":75,"href":"https:\/\/www.impacttesting.net\/cs\/wp-json\/wp\/v2\/pages\/59\/revisions\/75"}],"wp:attachment":[{"href":"https:\/\/www.impacttesting.net\/cs\/wp-json\/wp\/v2\/media?parent=59"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}