{"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_1344300221\">\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-316152901\">\n\n\n\t<div id=\"col-1842889651\" 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-1023464979\">\n\n\n\t<div id=\"col-43191138\" 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-2452566989\" class=\"text\">\n\t\t\n\n<h1>ASTM D1709<\/h1>\n\t\t\n<style>\n#text-2452566989 {\n  font-size: 1.5rem;\n  text-align: center;\n}\n<\/style>\n\t<\/div>\n\t\n\t<div id=\"text-1882194\" 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-1882194 {\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-43191138 > .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-1904097981\">\n\n\n\t<div id=\"col-960909000\" 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-942997504\">\n\n\n\t<div id=\"col-936060644\" 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-1349274645\">\n\n\n\t<div id=\"col-991133440\" 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-2638955899\" 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-2638955899 {\n  color: rgb(0, 0, 0);\n}\n#text-2638955899 > * {\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-1238838981\" 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-1781095237\" 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-1421004670\">\n\n\n\t<div id=\"col-1230501711\" 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_1876724155\">\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_1876724155 {\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-316152901 > .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_1344300221 {\n  padding-top: 30px;\n  padding-bottom: 30px;\n}\n<\/style>\n\t<\/section>\n\t\n\t<section class=\"section\" id=\"section_1239736659\">\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-1874000374\">\n\n\n\t<div id=\"col-1313787962\" 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-1399023634\">\n\n\n\t<div id=\"col-1069275153\" 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-2995972720\" class=\"text\">\n\t\t\n\n<h2>ASTM D3420 a jej\u00ed v\u00fdznam<\/h2>\n\t\t\n<style>\n#text-2995972720 {\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-758382329\" 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-109875263\" 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-380445883\" 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-380445883 {\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-1405119785\" 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-1750162887\">\n\n\n\t<div id=\"col-930440139\" 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-1477566587\">\n\n\n\t<div id=\"col-1855172354\" 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-1037602612\" 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-1037602612 {\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-1333450064\">\n\n\n\t<div id=\"col-568642831\" 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-469057292\" 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-2010259247\">\n\n\n\t<div id=\"col-1516127740\" 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-1980755548\">\n\n\n\t<div id=\"col-1039842091\" 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-2141933788\">\n\n\n\t<div id=\"col-1474443097\" 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-36235565\" 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-36235565 {\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-1962062374\">\n\n\n\t<div id=\"col-1744408169\" 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-960301946\" 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-274907686\">\n\n\n\t<div id=\"col-1959324369\" 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-652986391\">\n\n\n\t<div id=\"col-1295431784\" 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-2023963742\">\n\n\n\t<div id=\"col-1895274334\" 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-4108896433\" class=\"text\">\n\t\t\n\n<h2>Interpretace dat a anal\u00fdza v\u00fdsledk\u016f<\/h2>\n\t\t\n<style>\n#text-4108896433 {\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-1827924553\">\n\n\n\t<div id=\"col-1382049674\" 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-1315188981\" 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_333357142\">\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_333357142 {\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_1239736659 {\n  padding-top: 30px;\n  padding-bottom: 30px;\n}\n<\/style>\n\t<\/section>\n\t\n\t<section class=\"section\" id=\"section_347055429\">\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-882682838\">\n\n\n\t<div id=\"col-1880559337\" 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-1803970443\">\n\n\n\t<div id=\"col-1378888056\" 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-2214455668\" 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-2214455668 {\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-25474537\" 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-1813138427\" 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-676760649\" 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-676760649 {\n  font-size: 1.1rem;\n  line-height: 1.3;\n}\n<\/style>\n\t<\/div>\n\t\n\t<div id=\"text-4204851268\" 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-4204851268 {\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-362991686\" 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=\"Kontaktn\u00ed formul\u00e1\u0159\" novalidate=\"novalidate\" data-status=\"init\" 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wpcf7-text\" aria-invalid=\"false\" placeholder=\"Va\u0161e spole\u010dnost\" value=\"\" type=\"text\" name=\"Comapany\" \/><\/span><br \/>\n<span class=\"wpcf7-form-control-wrap\" data-name=\"Email\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-email wpcf7-validates-as-required wpcf7-text wpcf7-validates-as-email\" aria-required=\"true\" aria-invalid=\"false\" placeholder=\"V\u00e1\u0161 e-mail*\" value=\"\" type=\"email\" name=\"Email\" \/><\/span><br \/>\n<span class=\"wpcf7-form-control-wrap\" data-name=\"Message\"><textarea cols=\"40\" rows=\"10\" maxlength=\"2000\" class=\"wpcf7-form-control wpcf7-textarea\" aria-invalid=\"false\" placeholder=\"Zpr\u00e1va\" name=\"Message\"><\/textarea><\/span>\n<\/p>\n<p><input class=\"wpcf7-form-control wpcf7-submit has-spinner\" type=\"submit\" value=\"Odeslat\" \/>\n<\/p><div class=\"wpcf7-response-output\" aria-hidden=\"true\"><\/div>\n<input type=\"hidden\" name=\"trp-form-language\" 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_347055429 {\n  padding-top: 30px;\n  padding-bottom: 30px;\n  background-color: rgb(232, 234, 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