{"id":1500,"date":"2026-07-21T09:14:54","date_gmt":"2026-07-21T09:14:54","guid":{"rendered":"https:\/\/www.packtests.com\/?post_type=standard&#038;p=1500"},"modified":"2026-07-21T09:14:54","modified_gmt":"2026-07-21T09:14:54","slug":"astm-d3420","status":"publish","type":"standard","link":"https:\/\/www.packtests.com\/cs\/standard\/astm-d3420\/","title":{"rendered":"ASTM D3420"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Odolnost proti n\u00e1raz\u016fm je kl\u00ed\u010dovou vlastnost\u00ed obalov\u00fdch f\u00f3li\u00ed, plastov\u00fdch desek, f\u00f3li\u00ed a kompozitn\u00edch materi\u00e1l\u016f, kter\u00e9 jsou b\u011bhem p\u0159epravy, manipulace a p\u0159i kone\u010dn\u00e9m pou\u017eit\u00ed vystaveny n\u00e1hl\u00fdm mechanick\u00fdm n\u00e1raz\u016fm. Tato <strong>Zku\u0161ebn\u00ed za\u0159\u00edzen\u00ed ASTM D3420 pro zkou\u0161ku n\u00e1razem kyvadlem<\/strong> poskytuje spolehlivou metodu pro stanoven\u00ed r\u00e1zov\u00e9 pevnosti pru\u017en\u00fdch a tenk\u00fdch materi\u00e1l\u016f m\u011b\u0159en\u00edm energie pot\u0159ebn\u00e9 k prop\u00edchnut\u00ed nebo roztr\u017een\u00ed zku\u0161ebn\u00edho vzorku za kontrolovan\u00fdch r\u00e1zov\u00fdch podm\u00ednek.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pro v\u00fdrobce a laborato\u0159e zab\u00fdvaj\u00edc\u00ed se v\u00fdvojem obal\u016f, kontrolou kvality a v\u00fdzkumem materi\u00e1l\u016f je d\u016fle\u017eit\u00e9 pochopit <strong>odolnost plastov\u00e9 f\u00f3lie proti n\u00e1raz\u016fm kyvadlem<\/strong> pom\u00e1h\u00e1 zajistit, aby v\u00fdrobky odolaly n\u00e1raz\u016fm v re\u00e1ln\u00fdch podm\u00ednk\u00e1ch bez neo\u010dek\u00e1van\u00e9ho selh\u00e1n\u00ed. Kyvn\u00e1 r\u00e1zov\u00e1 zku\u0161ebn\u00ed stanice PIT-01 od spole\u010dnosti Cell Instruments je navr\u017eena k prov\u00e1d\u011bn\u00ed p\u0159esn\u00fdch zkou\u0161ek odolnosti proti n\u00e1razu podle normy ASTM D3420 a nab\u00edz\u00ed stabiln\u00ed provoz, automatizovan\u00e9 \u0159\u00edzen\u00ed a opakovateln\u00e9 v\u00fdsledky m\u011b\u0159en\u00ed pro profesion\u00e1ln\u00ed hodnocen\u00ed materi\u00e1l\u016f.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Co je to zkou\u0161ka n\u00e1razem podle normy ASTM D3420?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>ASTM D3420<\/strong> jedn\u00e1 se o standardn\u00ed zku\u0161ebn\u00ed metodu pou\u017e\u00edvanou ke stanoven\u00ed odolnosti plastov\u00fdch f\u00f3li\u00ed a tenk\u00fdch desek proti n\u00e1razu, p\u0159i kter\u00e9 se na st\u0159ed zku\u0161ebn\u00edho vzorku p\u016fsob\u00ed \u0159\u00edzenou n\u00e1razovou silou pomoc\u00ed kyvadla. Zkou\u0161ka m\u011b\u0159\u00ed mno\u017estv\u00ed energie, kter\u00e9 materi\u00e1l pohlt\u00ed p\u0159edt\u00edm, ne\u017e dojde k poru\u0161en\u00ed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Na rozd\u00edl od statick\u00fdch mechanick\u00fdch zkou\u0161ek, jako je zkou\u0161ka pevnosti v tahu, zkou\u0161ka r\u00e1zov\u00e9 pevnosti hodnot\u00ed, jak se materi\u00e1l chov\u00e1 p\u0159i p\u016fsoben\u00ed n\u00e1hl\u00e9 s\u00edly. Mnoh\u00e9 obalov\u00e9 materi\u00e1ly mohou vykazovat vynikaj\u00edc\u00ed pevnost v tahu, ale p\u0159esto sel\u017eou p\u0159i n\u00e1hl\u00e9m n\u00e1razu, proto\u017ee nedok\u00e1\u017eou energii dostate\u010dn\u011b rychle absorbovat.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Metoda ASTM D3420 pom\u00e1h\u00e1 in\u017een\u00fdr\u016fm pochopit:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Hou\u017eevnatost materi\u00e1lu p\u0159i n\u00e1hl\u00e9m zat\u00ed\u017een\u00ed<\/li>\n\n\n\n<li>Odolnost proti prop\u00edchnut\u00ed a roztr\u017een\u00ed<\/li>\n\n\n\n<li>Schopnost pohlcov\u00e1n\u00ed energie<\/li>\n\n\n\n<li>Rozd\u00edly mezi strukturami nebo slo\u017een\u00edm f\u00f3li\u00ed<\/li>\n\n\n\n<li>Vliv tlou\u0161\u0165ky, p\u0159\u00edsad a v\u00fdrobn\u00edch proces\u016f<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Tyto informace slou\u017e\u00ed jako podklad pro v\u00fdb\u011br materi\u00e1l\u016f, optimalizaci balen\u00ed a kontrolu kvality v\u00fdroby.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img fetchpriority=\"high\" decoding=\"async\" width=\"600\" height=\"600\" src=\"https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/07\/ASTM-D3420-PIT-01-pendulum-tester.webp\" alt=\"ASTM D3420 PIT-01 Kyvadlov\u00e1 r\u00e1zov\u00e1 zku\u0161ebn\u00ed stanice\" class=\"wp-image-1501\" style=\"width:343px;height:auto\" title=\"\" srcset=\"https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/07\/ASTM-D3420-PIT-01-pendulum-tester.webp 600w, https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/07\/ASTM-D3420-PIT-01-pendulum-tester-300x300.webp 300w, https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/07\/ASTM-D3420-PIT-01-pendulum-tester-150x150.webp 150w, https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/07\/ASTM-D3420-PIT-01-pendulum-tester-12x12.webp 12w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Pro\u010d je d\u016fle\u017eit\u00e1 odolnost plastov\u00e9 f\u00f3lie proti n\u00e1raz\u016fm kyvadlem<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Plastov\u00e9 f\u00f3lie a pru\u017en\u00e9 obalov\u00e9 materi\u00e1ly jsou b\u011bhem sv\u00e9ho \u017eivotn\u00edho cyklu \u010dasto vystaveny neo\u010dek\u00e1van\u00fdm n\u00e1raz\u016fm. B\u011bhem v\u00fdroby, pln\u011bn\u00ed, p\u0159epravy i p\u0159i pou\u017e\u00edv\u00e1n\u00ed spot\u0159ebiteli mohou b\u00fdt tyto materi\u00e1ly vystaveny p\u00e1d\u016fm, ostr\u00fdm hran\u00e1m, vibrac\u00edm nebo tlakov\u00fdm sil\u00e1m, kter\u00e9 mohou zp\u016fsobit n\u00e1razov\u00e9 nam\u00e1h\u00e1n\u00ed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u00edzk\u00e1 odolnost proti n\u00e1raz\u016fm m\u016f\u017ee v\u00e9st k:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Trh\u00e1n\u00ed f\u00f3lie b\u011bhem balic\u00edch operac\u00ed<\/li>\n\n\n\n<li>\u00danik obsahu balen\u00ed zp\u016fsoben\u00fd po\u0161kozen\u00edm v d\u016fsledku prop\u00edchnut\u00ed<\/li>\n\n\n\n<li>Rizika kontaminace v\u00fdrobk\u016f<\/li>\n\n\n\n<li>Zv\u00fd\u0161en\u00e9 pl\u00fdtv\u00e1n\u00ed materi\u00e1lem<\/li>\n\n\n\n<li>St\u00ed\u017enosti z\u00e1kazn\u00edk\u016f a vr\u00e1cen\u00ed zbo\u017e\u00ed<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Testov\u00e1n\u00ed <strong>odolnost plastov\u00e9 f\u00f3lie proti n\u00e1raz\u016fm kyvadlem<\/strong> umo\u017e\u0148uje v\u00fdrobc\u016fm p\u0159edv\u00eddat vlastnosti materi\u00e1lu je\u0161t\u011b p\u0159edt\u00edm, ne\u017e se v\u00fdrobky dostanou na trh.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nap\u0159\u00edklad f\u00f3lie ur\u010den\u00e9 k balen\u00ed potravin mus\u00ed zachovat svou celistvost p\u0159i p\u0159eprav\u011b slo\u017eit\u00fdmi dodavatelsk\u00fdmi \u0159et\u011bzci. Materi\u00e1ly pro balen\u00ed zdravotnick\u00fdch prost\u0159edk\u016f mus\u00ed vykazovat spolehlivou odolnost proti n\u00e1hodn\u00e9mu po\u0161kozen\u00ed, aby chr\u00e1nily steriln\u00ed obsah. Pr\u016fmyslov\u00e9 f\u00f3lie pou\u017e\u00edvan\u00e9 v ochrann\u00fdch obalech mus\u00ed odol\u00e1vat mechanick\u00e9mu nam\u00e1h\u00e1n\u00ed p\u0159i manipulaci.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">D\u00edky p\u0159esn\u00e9mu m\u011b\u0159en\u00ed n\u00e1razov\u00e9 energie poskytuje zkou\u0161ka podle normy ASTM D3420 in\u017een\u00fdr\u016fm kvantitativn\u00ed \u00fadaje, nam\u00edsto toho, aby se spol\u00e9hali na vizu\u00e1ln\u00ed kontrolu nebo poruchy zji\u0161t\u011bn\u00e9 v ter\u00e9nu.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Princip zkou\u0161ky n\u00e1razem kyvadlem<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Princip fungov\u00e1n\u00ed kyvadlov\u00e9 r\u00e1zov\u00e9 zku\u0161ebn\u00ed stanice podle normy ASTM D3420 spo\u010d\u00edv\u00e1 v m\u011b\u0159en\u00ed absorpce energie.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u011bhem testu:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Vzorek je pevn\u011b upevn\u011bn mezi pneumatick\u00fdmi svorkami.<\/li>\n\n\n\n<li>Kyvadlo se stanovenou n\u00e1razovou v\u00fd\u0161kou se spust\u00ed automaticky.<\/li>\n\n\n\n<li>Kyvadlo dopad\u00e1 na st\u0159edovou \u010d\u00e1st vzorku.<\/li>\n\n\n\n<li>Tento p\u0159\u00edstroj m\u011b\u0159\u00ed energii, kterou kyvadlo ztrat\u00ed p\u0159i n\u00e1razu.<\/li>\n\n\n\n<li>Pohlcen\u00e1 energie vyjad\u0159uje odolnost materi\u00e1lu proti n\u00e1razu.<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">\u010c\u00edm vy\u0161\u0161\u00ed je absorbovan\u00e1 energie n\u00e1razu, t\u00edm v\u011bt\u0161\u00ed je odolnost materi\u00e1lu proti n\u00e1hl\u00e9mu selh\u00e1n\u00ed v d\u016fsledku n\u00e1razu.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00fdpo\u010det energetick\u00e9 n\u00e1ro\u010dnosti z\u00e1vis\u00ed na n\u00e1sleduj\u00edc\u00edch faktorech:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Hmotnost kyvadla<\/li>\n\n\n\n<li>\u00dahel uvoln\u011bn\u00ed<\/li>\n\n\n\n<li>Geometrie \u00faderov\u00e9 hlavy<\/li>\n\n\n\n<li>Chov\u00e1n\u00ed materi\u00e1lu p\u0159i deformaci<\/li>\n\n\n\n<li>Ztr\u00e1ta energie po p\u0159etr\u017een\u00ed vzorku<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Syst\u00e9m p\u0159esn\u00e9ho m\u011b\u0159en\u00ed \u00fahlu tohoto testeru zaji\u0161\u0165uje p\u0159esn\u00fd v\u00fdpo\u010det hodnot n\u00e1razov\u00e9 energie.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Zku\u0161ebn\u00ed metoda pro zkou\u0161ku n\u00e1razem kyvadlem podle normy ASTM D3420<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Typick\u00fd zku\u0161ebn\u00ed postup podle normy ASTM D3420 zahrnuje n\u011bkolik \u0159\u00edzen\u00fdch krok\u016f, kter\u00e9 zaji\u0161\u0165uj\u00ed spolehliv\u00e9 v\u00fdsledky.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">P\u0159\u00edprava vzork\u016f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Zku\u0161ebn\u00ed vzorky se obvykle p\u0159ipravuj\u00ed v souladu s po\u017eadavky kladen\u00fdmi na dan\u00fd materi\u00e1l a jeho pou\u017eit\u00ed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Mezi b\u011b\u017en\u00e9 charakteristiky vzork\u016f pat\u0159\u00ed:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Vzorky ploch\u00fdch f\u00f3li\u00ed nebo desek<\/li>\n\n\n\n<li>Rovnom\u011brn\u00e1 tlou\u0161\u0165ka<\/li>\n\n\n\n<li>\u0158\u00edzen\u00e9 \u00fapravy prost\u0159ed\u00ed<\/li>\n\n\n\n<li>Spr\u00e1vn\u00e9 rozm\u011bry pro mont\u00e1\u017e up\u00ednac\u00edho za\u0159\u00edzen\u00ed<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Kondicionov\u00e1n\u00ed je d\u016fle\u017eit\u00e9, proto\u017ee teplota a vlhkost mohou ovliv\u0148ovat pru\u017enost a hou\u017eevnatost polymern\u00edch materi\u00e1l\u016f.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Uk\u00e1zkov\u00e1 instalace<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Zkou\u0161en\u00fd vzorek je upevn\u011bn mezi kruhov\u00fdmi svorkami. Kyvadlov\u00e1 r\u00e1zov\u00e1 zku\u0161ebn\u00ed stanice podle normy ASTM D3420 vyu\u017e\u00edv\u00e1 pneumatickou up\u00ednac\u00ed technologii, kter\u00e1 zaji\u0161\u0165uje st\u00e1l\u00fd up\u00ednac\u00ed tlak.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Spolehliv\u00e9 upnut\u00ed zabra\u0148uje:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Posunut\u00ed vzorku<\/li>\n\n\n\n<li>Nerovnom\u011brn\u00e9 rozlo\u017een\u00ed nap\u011bt\u00ed<\/li>\n\n\n\n<li>Chyby p\u0159i testov\u00e1n\u00ed zp\u016fsoben\u00e9 odchylkami v postupu obsluhy<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Uvoln\u011bn\u00ed kyvadla a n\u00e1raz<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Po um\u00edst\u011bn\u00ed vzorku se kyvadlo automaticky uvoln\u00ed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u00e1razov\u00e1 hlavice dopad\u00e1 na st\u0159ed zku\u0161ebn\u00edho t\u011blesa a p\u0159en\u00e1\u0161\u00ed kinetickou energii do materi\u00e1lu. Dojde-li k poru\u0161en\u00ed zku\u0161ebn\u00edho t\u011blesa, vypo\u010d\u00edt\u00e1 se absorbovan\u00e1 energie z rozd\u00edlu mezi po\u010d\u00e1te\u010dn\u00edm a kone\u010dn\u00fdm pohybem kyvadla.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Anal\u00fdza v\u00fdsledk\u016f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00fdsledek zkou\u0161ky ud\u00e1v\u00e1 energii n\u00e1razu pot\u0159ebnou k vyvol\u00e1n\u00ed poruchy.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Laborato\u0159e obvykle analyzuj\u00ed:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Pr\u016fm\u011brn\u00e1 energie n\u00e1razu<\/li>\n\n\n\n<li>Maxim\u00e1ln\u00ed a minim\u00e1ln\u00ed hodnoty<\/li>\n\n\n\n<li>Rozd\u00edly ve slo\u017een\u00ed jednotliv\u00fdch vzork\u016f<\/li>\n\n\n\n<li>Srovn\u00e1n\u00ed r\u016fzn\u00fdch struktur f\u00f3li\u00ed<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Pro zv\u00fd\u0161en\u00ed statistick\u00e9 spolehlivosti se obvykle prov\u00e1d\u00ed v\u00edce test\u016f.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Hlavn\u00ed vlastnosti kyvadlov\u00e9 r\u00e1zov\u00e9 zku\u0161ebn\u00ed stanice podle normy ASTM D3420<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Pendulov\u00fd r\u00e1zov\u00fd tester PIT-01 kombinuje pokro\u010dilou \u0159\u00eddic\u00ed technologii s praktick\u00fdmi po\u017eadavky na provoz v laborato\u0159i.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u0158\u00edzen\u00ed pomoc\u00ed PLC a dotykov\u00fd displej HMI<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Syst\u00e9m vyu\u017e\u00edv\u00e1 pr\u016fmyslov\u00fd PLC \u0159adi\u010d v kombinaci s intuitivn\u00edm dotykov\u00fdm rozhran\u00edm HMI.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Mezi v\u00fdhody pat\u0159\u00ed:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Stabiln\u00ed provoz<\/li>\n\n\n\n<li>Jednoduch\u00e9 nastaven\u00ed parametr\u016f<\/li>\n\n\n\n<li>Snadn\u00e1 spr\u00e1va test\u016f<\/li>\n\n\n\n<li>Sn\u00ed\u017een\u00ed po\u010dtu chyb obsluhy<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">D\u00edky u\u017eivatelsky p\u0159\u00edv\u011btiv\u00e9mu rozhran\u00ed je tento p\u0159\u00edstroj vhodn\u00fd jak pro v\u00fdzkumn\u00e9 laborato\u0159e, tak pro prost\u0159ed\u00ed kontroly kvality ve v\u00fdrob\u011b.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Pneumatick\u00fd up\u00ednac\u00ed syst\u00e9m vzork\u016f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Pro p\u0159esnost zkou\u0161ek r\u00e1zovou pevnost\u00ed je nezbytn\u00e1 konzistentn\u00ed fixace vzork\u016f.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pneumatick\u00fd up\u00ednac\u00ed syst\u00e9m zaji\u0161\u0165uje:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Rovnom\u011brn\u00e1 p\u0159idr\u017eovac\u00ed s\u00edla<\/li>\n\n\n\n<li>Rychl\u00e1 instalace vzorku<\/li>\n\n\n\n<li>Zlep\u0161en\u00e1 opakovatelnost<\/li>\n\n\n\n<li>Men\u0161\u00ed rozd\u00edly p\u0159i ru\u010dn\u00edm ovl\u00e1d\u00e1n\u00ed<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Tato funkce je obzvl\u00e1\u0161t\u011b u\u017eite\u010dn\u00e1 v p\u0159\u00edpadech, kdy laborato\u0159e prov\u00e1d\u011bj\u00ed velk\u00e9 mno\u017estv\u00ed test\u016f v r\u00e1mci kontroly kvality.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Automatick\u00e9 uvoln\u011bn\u00ed kyvadla<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Automatick\u00fd mechanismus uvoln\u011bn\u00ed kyvadla zvy\u0161uje konzistentnost testov\u00e1n\u00ed t\u00edm, \u017ee eliminuje odchylky zp\u016fsoben\u00e9 ru\u010dn\u00edm uvol\u0148ov\u00e1n\u00edm.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Mezi v\u00fdhody pat\u0159\u00ed:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Lep\u0161\u00ed opakovatelnost<\/li>\n\n\n\n<li>Vy\u0161\u0161\u00ed efektivita testov\u00e1n\u00ed<\/li>\n\n\n\n<li>Zv\u00fd\u0161en\u00e1 bezpe\u010dnost obsluhy<\/li>\n\n\n\n<li>Spolehliv\u011bj\u0161\u00ed srovn\u00e1n\u00ed materi\u00e1l\u016f<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Statistika automatick\u00fdch dat<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">P\u0159\u00edstroj dok\u00e1\u017ee automaticky shroma\u017e\u010fovat a analyzovat v\u00fdsledky test\u016f z v\u00edce m\u011b\u0159en\u00ed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">To laborato\u0159\u00edm pom\u00e1h\u00e1:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Zjistit odchylky v materi\u00e1lu<\/li>\n\n\n\n<li>Efektivn\u00ed vytv\u00e1\u0159en\u00ed zku\u0161ebn\u00edch protokol\u016f<\/li>\n\n\n\n<li>Podpora kvalitn\u00ed dokumentace<\/li>\n\n\n\n<li>Zlep\u0161it rozhodov\u00e1n\u00ed v oblasti v\u00fdroby<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">P\u0159esn\u00e9 m\u011b\u0159en\u00ed \u00fahl\u016f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">P\u0159esn\u00e9 m\u011b\u0159en\u00ed \u00fahlu je z\u00e1sadn\u00ed, proto\u017ee v\u00fdpo\u010det energie n\u00e1razu p\u0159\u00edmo z\u00e1vis\u00ed na pohybu kyvadla.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Kyvadlov\u00e1 r\u00e1zov\u00e1 zku\u0161ebn\u00ed stanice podle normy ASTM D3420 umo\u017e\u0148uje p\u0159esn\u00e1 m\u011b\u0159en\u00ed, kter\u00e1 zaji\u0161\u0165uj\u00ed spolehliv\u00e9 v\u00fdsledky m\u011b\u0159en\u00ed n\u00e1razov\u00e9 energie.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Integrovan\u00e1 mikrotisk\u00e1rna a v\u00fdstup dat<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Integrovan\u00e1 mikrotisk\u00e1rna umo\u017e\u0148uje okam\u017eit\u00fd tisk v\u00fdsledk\u016f test\u016f.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Voliteln\u00e1 komunikace p\u0159es RS232 a softwarov\u00e1 podpora umo\u017e\u0148uj\u00ed:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Spr\u00e1va po\u010d\u00edta\u010dov\u00fdch dat<\/li>\n\n\n\n<li>Ukl\u00e1d\u00e1n\u00ed v\u00fdsledk\u016f test\u016f<\/li>\n\n\n\n<li>Dal\u0161\u00ed statistick\u00e1 anal\u00fdza<\/li>\n\n\n\n<li>Integrace laboratorn\u00edho informa\u010dn\u00edho syst\u00e9mu<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Vyu\u017eit\u00ed zkou\u0161ek n\u00e1razem kyvadlem<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Zku\u0161ebn\u00ed za\u0159\u00edzen\u00ed ASTM D3420 pro zkou\u0161ku n\u00e1razem kyvadlem se \u0161iroce pou\u017e\u00edv\u00e1 v r\u016fzn\u00fdch pr\u016fmyslov\u00fdch odv\u011btv\u00edch, kde je u tenk\u00fdch materi\u00e1l\u016f zapot\u0159eb\u00ed spolehliv\u00e9 posouzen\u00ed odolnosti proti n\u00e1razu.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Odv\u011btv\u00ed flexibiln\u00edch obal\u016f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00fdrobci flexibiln\u00edch obal\u016f vyu\u017e\u00edvaj\u00ed zkou\u0161ky n\u00e1razem k posouzen\u00ed:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>F\u00f3lie pro balen\u00ed potravin<\/li>\n\n\n\n<li>Materi\u00e1ly pro balen\u00ed snack\u016f<\/li>\n\n\n\n<li>F\u00f3lie pro retortov\u00e9 s\u00e1\u010dky<\/li>\n\n\n\n<li>Laminovan\u00e9 konstrukce<\/li>\n\n\n\n<li>Bari\u00e9rov\u00e9 f\u00f3lie<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u00dadaje o odolnosti proti n\u00e1raz\u016fm pom\u00e1haj\u00ed optimalizovat struktury v\u00edcevrstv\u00fdch f\u00f3li\u00ed a sn\u00ed\u017eit po\u010det vadn\u00fdch obal\u016f.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Obaly pro zdravotnictv\u00ed a farmaceutick\u00fd pr\u016fmysl<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">L\u00e9ka\u0159sk\u00e9 obaly vy\u017eaduj\u00ed vysokou spolehlivost, proto\u017ee po\u0161kozen\u00ed obalu m\u016f\u017ee ohrozit bezpe\u010dnost v\u00fdrobku.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Mezi oblasti pou\u017eit\u00ed pat\u0159\u00ed:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Steriln\u00ed bari\u00e9rov\u00e9 balen\u00ed<\/li>\n\n\n\n<li>L\u00e9ka\u0159sk\u00e9 ta\u0161ti\u010dky<\/li>\n\n\n\n<li>Ochrann\u00e9 farmaceutick\u00e9 obaly<\/li>\n\n\n\n<li>Jednor\u00e1zov\u00e9 zdravotnick\u00e9 v\u00fdrobky<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Zkou\u0161ky n\u00e1razem slou\u017e\u00ed k ov\u011b\u0159en\u00ed odolnosti obal\u016f.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">V\u00fdroba plastov\u00fdch f\u00f3li\u00ed<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Filmov\u00ed producenti vyu\u017e\u00edvaj\u00ed zkou\u0161ku podle normy ASTM D3420 p\u0159i:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Hodnocen\u00ed surovin<\/li>\n\n\n\n<li>V\u00fdvoj filmov\u00fdch formulac\u00ed<\/li>\n\n\n\n<li>Optimalizace proces\u016f<\/li>\n\n\n\n<li>Kontrola kvality<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Testov\u00e1n\u00ed umo\u017e\u0148uje porovnat r\u016fzn\u00e9 typy polymer\u016f, tlou\u0161\u0165ky a p\u0159\u00edsady.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Materi\u00e1ly pro automobilov\u00fd pr\u016fmysl a pr\u016fmyslov\u00e9 odv\u011btv\u00ed<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Tenk\u00e9 plastov\u00e9 desky a kompozitn\u00ed f\u00f3lie pou\u017e\u00edvan\u00e9 v automobilov\u00e9m pr\u016fmyslu a v pr\u016fmyslov\u00fdch aplikac\u00edch mohou b\u00fdt vystaveny mechanick\u00fdm n\u00e1raz\u016fm.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Zkou\u0161ky n\u00e1razem pom\u00e1haj\u00ed in\u017een\u00fdr\u016fm p\u0159i v\u00fdb\u011bru materi\u00e1l\u016f s odpov\u00eddaj\u00edc\u00ed hou\u017eevnatost\u00ed a trvanlivost\u00ed.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Materi\u00e1ly vhodn\u00e9 pro zkou\u0161ky podle normy ASTM D3420<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Zku\u0161ebn\u00ed za\u0159\u00edzen\u00ed Pendulum Impact Tester umo\u017e\u0148uje testovat r\u016fzn\u00e9 tenk\u00e9 a pru\u017en\u00e9 materi\u00e1ly, mezi n\u011b\u017e pat\u0159\u00ed:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Typ materi\u00e1lu<\/th><th>Typick\u00e9 pou\u017eit\u00ed<\/th><\/tr><\/thead><tbody><tr><td>Plastov\u00e9 f\u00f3lie<\/td><td>Balic\u00ed f\u00f3lie, ochrann\u00e9 f\u00f3lie<\/td><\/tr><tr><td>Laminovan\u00e9 f\u00f3lie<\/td><td>V\u00edcevrstv\u00e9 flexibiln\u00ed obaly<\/td><\/tr><tr><td>Polymerov\u00e9 desky<\/td><td>Pr\u016fmyslov\u00e9 plastov\u00e9 v\u00fdrobky<\/td><\/tr><tr><td>Kompozity z hlin\u00edkov\u00e9 f\u00f3lie<\/td><td>Ochrann\u00e9 obaly<\/td><\/tr><tr><td>Lamin\u00e1ty z pap\u00edru a plastu<\/td><td>Speci\u00e1ln\u00ed obaly<\/td><\/tr><tr><td>Kompozitn\u00ed materi\u00e1ly<\/td><td>Technick\u00e9 aplikace<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Norma ASTM D3420 ve srovn\u00e1n\u00ed s jin\u00fdmi metodami zkou\u0161ek r\u00e1zov\u00e9 hou\u017eevnatosti<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">R\u016fzn\u00e9 metody zkou\u0161ek n\u00e1razem hodnot\u00ed r\u016fzn\u00e9 zp\u016fsoby selh\u00e1n\u00ed.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Zku\u0161ebn\u00ed metoda<\/th><th>Hlavn\u00ed aplikace<\/th><th>Typ n\u00e1razu<\/th><\/tr><\/thead><tbody><tr><td>ASTM D3420<\/td><td>Plastov\u00e9 f\u00f3lie a tenk\u00e9 desky<\/td><td>N\u00e1raz kyvadla<\/td><\/tr><tr><td>ASTM D1709<\/td><td>Plastov\u00e9 f\u00f3lie<\/td><td>Dopad padaj\u00edc\u00edho \u0161ipky<\/td><\/tr><tr><td>Zkou\u0161ka n\u00e1razem padaj\u00edc\u00ed koule<\/td><td>Listy a n\u00e1doby<\/td><td>N\u00e1raz m\u00ed\u010de<\/td><\/tr><tr><td>Charpyho r\u00e1zov\u00e1 zkou\u0161ka<\/td><td>Tvrd\u00e9 plasty a kovy<\/td><td>N\u00e1raz na vzorek s v\u00fd\u0159ezem<\/td><\/tr><tr><td>Izodova zkou\u0161ka r\u00e1zov\u00e9 hou\u017eevnatosti<\/td><td>Technick\u00e9 plasty<\/td><td>N\u00e1raz kyvadla na tuh\u00e9 vzorky<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Spr\u00e1vn\u00e1 zku\u0161ebn\u00ed metoda z\u00e1vis\u00ed na struktu\u0159e materi\u00e1lu a p\u0159edpokl\u00e1dan\u00fdch provozn\u00edch podm\u00ednk\u00e1ch.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">U tenk\u00fdch pru\u017en\u00fdch f\u00f3li\u00ed poskytuje norma ASTM D3420 cenn\u00e9 informace o odolnosti proti n\u00e1hl\u00e9mu prop\u00edchnut\u00ed a prasknut\u00ed zp\u016fsoben\u00e9mu n\u00e1razov\u00fdmi silami.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Zku\u0161ebn\u00ed stroj Spencer pro r\u00e1zov\u00e9 zkou\u0161ky a r\u00e1zov\u00e9 zkou\u0161ky kyvadlem<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Pojem <strong>Zku\u0161ebn\u00ed za\u0159\u00edzen\u00ed Spencer pro m\u011b\u0159en\u00ed n\u00e1razu<\/strong> se \u010dasto spojuje s n\u00e1razov\u00fdmi zku\u0161ebn\u00edmi za\u0159\u00edzen\u00edmi kyvadlov\u00e9ho typu, kter\u00e1 se pou\u017e\u00edvaj\u00ed k hodnocen\u00ed odolnosti materi\u00e1l\u016f proti n\u00e1razu.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A\u010dkoli r\u016fzn\u00ed v\u00fdrobci mohou pro sv\u00e9 p\u0159\u00edstroje pou\u017e\u00edvat odli\u0161n\u00e9 n\u00e1zvy, jejich z\u00e1kladn\u00ed \u00fa\u010del z\u016fst\u00e1v\u00e1 stejn\u00fd: m\u011b\u0159en\u00ed energie absorbovan\u00e9 zku\u0161ebn\u00edm t\u011blesem p\u0159i p\u016fsoben\u00ed \u0159\u00edzen\u00e9 n\u00e1razov\u00e9 s\u00edly.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Modern\u00ed kyvadlov\u00e9 r\u00e1zov\u00e9 zkou\u0161e\u010dky podle normy ASTM D3420 p\u0159edstavuj\u00ed vylep\u0161en\u00ed oproti tradi\u010dn\u00edm syst\u00e9m\u016fm d\u00edky n\u00e1sleduj\u00edc\u00edm novink\u00e1m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Automatick\u00e9 up\u00edn\u00e1n\u00ed vzork\u016f<\/li>\n\n\n\n<li>Digit\u00e1ln\u00ed m\u011b\u0159ic\u00ed syst\u00e9my<\/li>\n\n\n\n<li>Funkce z\u00e1znamu dat<\/li>\n\n\n\n<li>Zlep\u0161en\u00e1 opakovatelnost<\/li>\n\n\n\n<li>Intuitivn\u00ed ovl\u00e1d\u00e1n\u00ed<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">D\u00edky t\u011bmto vylep\u0161en\u00edm jsou modern\u00ed r\u00e1zov\u00e9 zkou\u0161e\u010dky vhodn\u011bj\u0161\u00ed pro profesion\u00e1ln\u00ed laborato\u0159e, kter\u00e9 vy\u017eaduj\u00ed konzistentn\u00ed a sledovateln\u00e9 v\u00fdsledky zkou\u0161ek.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">V\u00fdhody pou\u017e\u00edv\u00e1n\u00ed zku\u0161ebn\u00edch za\u0159\u00edzen\u00ed podle normy ASTM D3420<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Profesion\u00e1l <a href=\"https:\/\/store.astm.org\/d3420-21r26.html\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">ASTM D3420<\/a> Zku\u0161ebn\u00ed za\u0159\u00edzen\u00ed pro r\u00e1zovou zkou\u0161ku kyvadlem nab\u00edz\u00ed \u0159adu v\u00fdhod pro v\u00fdvoj materi\u00e1l\u016f a zaji\u0161t\u011bn\u00ed kvality:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>P\u0159esn\u00e9 m\u011b\u0159en\u00ed energie n\u00e1razu<\/strong> pro spolehliv\u00e9 srovn\u00e1n\u00ed materi\u00e1l\u016f<\/li>\n\n\n\n<li><strong>Opakovateln\u00e9 v\u00fdsledky test\u016f<\/strong> prost\u0159ednictv\u00edm automatizovan\u00e9ho provozu<\/li>\n\n\n\n<li><strong>Zv\u00fd\u0161en\u00e1 efektivita v\u00fdvoje produkt\u016f<\/strong><\/li>\n\n\n\n<li><strong>Sn\u00ed\u017een\u00e9 riziko selh\u00e1n\u00ed obal\u016f<\/strong><\/li>\n\n\n\n<li><strong>Lep\u0161\u00ed dodr\u017eov\u00e1n\u00ed po\u017eadavk\u016f z\u00e1kazn\u00edk\u016f a oborov\u00fdch standard\u016f<\/strong><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Pro v\u00fdrobce, kte\u0159\u00ed se zab\u00fdvaj\u00ed v\u00fdrobou vysoce v\u00fdkonn\u00fdch f\u00f3li\u00ed a obalov\u00fdch materi\u00e1l\u016f, p\u0159edstavuj\u00ed zkou\u0161ky n\u00e1razovou odolnost\u00ed nezbytnou sou\u010d\u00e1st komplexn\u00edho programu hodnocen\u00ed materi\u00e1l\u016f.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Technick\u00e9 specifikace kyvadlov\u00e9 r\u00e1zov\u00e9 zku\u0161ebn\u00ed stanice PIT-01<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Parametr<\/th><th>Specifikace<\/th><\/tr><\/thead><tbody><tr><td>Impact Energy<\/td><td>1 J, 2 J, 3 J<\/td><\/tr><tr><td>Usnesen\u00ed<\/td><td>0,001 J<\/td><\/tr><tr><td>Velikost \u00faderov\u00e9 hlavy<\/td><td>\u03a625,4 mm, \u03a619 mm, \u03a612,7 mm<\/td><\/tr><tr><td>Svorka na vzorky<\/td><td>Pneumatick\u00e1 svorka<\/td><\/tr><tr><td>Pr\u016fm\u011br svorky<\/td><td>\u03a689 mm, \u03a660 mm<\/td><\/tr><tr><td>Dod\u00e1vky plynu<\/td><td>PU hadi\u010dka 0,6 MPa, pr\u016fm\u011br 6 mm<\/td><\/tr><tr><td>Velikost vzorku<\/td><td>100 \u00d7 100 mm nebo \u03a6100 mm<\/td><\/tr><tr><td>Nap\u00e1jen\u00ed<\/td><td>110\u2013220 V st\u0159\u00eddav\u00e9ho proudu, 50 Hz<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Souvisej\u00edc\u00ed \u0159e\u0161en\u00ed pro zkou\u0161ky n\u00e1razu<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">V z\u00e1vislosti na druhu pou\u017eit\u00e9ho materi\u00e1lu mohou laborato\u0159e rovn\u011b\u017e zv\u00e1\u017eit:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>FDT-01 Tester n\u00e1raz\u016f padaj\u00edc\u00edmi \u0161ipkami<\/strong> pro zkou\u0161ky odolnosti plastov\u00fdch f\u00f3li\u00ed proti n\u00e1razu \u0161ipek podle normy ASTM D1709<\/li>\n\n\n\n<li><strong>FBT-01 Zku\u0161ebn\u00ed za\u0159\u00edzen\u00ed pro zkou\u0161ku n\u00e1razem padaj\u00edc\u00ed koule<\/strong> pro vyhodnocen\u00ed n\u00e1razu m\u00ed\u010de<\/li>\n\n\n\n<li><strong>Zku\u0161ebn\u00ed stroj pro r\u00e1zovou hou\u017eevnatost podle Charpyho a Izoda<\/strong> pro zkou\u0161ky n\u00e1razem na tuh\u00e9 materi\u00e1ly<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00fdb\u011brem spr\u00e1vn\u00e9 metody zkou\u0161ky n\u00e1razem se zajist\u00ed, \u017ee v\u00fdsledky zkou\u0161ky p\u0159esn\u011b odr\u00e1\u017eej\u00ed skute\u010dn\u00e9 podm\u00ednky pou\u017eit\u00ed materi\u00e1lu.<\/p>","protected":false},"excerpt":{"rendered":"<p>Impact resistance is a critical performance property for packaging films, plastic sheets, foils, and composite materials that experience sudden mechanical shocks during transportation, handling, and end-use applications. The ASTM D3420 Pendulum Impact Tester provides a reliable method to evaluate the impact strength of flexible and thin materials by measuring the energy required to puncture or [&hellip;]<\/p>","protected":false},"featured_media":1501,"parent":0,"template":"","meta":{"_acf_changed":false},"standard-category":[],"class_list":["post-1500","standard","type-standard","status-publish","has-post-thumbnail","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.packtests.com\/cs\/wp-json\/wp\/v2\/standard\/1500","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.packtests.com\/cs\/wp-json\/wp\/v2\/standard"}],"about":[{"href":"https:\/\/www.packtests.com\/cs\/wp-json\/wp\/v2\/types\/standard"}],"version-history":[{"count":5,"href":"https:\/\/www.packtests.com\/cs\/wp-json\/wp\/v2\/standard\/1500\/revisions"}],"predecessor-version":[{"id":1559,"href":"https:\/\/www.packtests.com\/cs\/wp-json\/wp\/v2\/standard\/1500\/revisions\/1559"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.packtests.com\/cs\/wp-json\/wp\/v2\/media\/1501"}],"wp:attachment":[{"href":"https:\/\/www.packtests.com\/cs\/wp-json\/wp\/v2\/media?parent=1500"}],"wp:term":[{"taxonomy":"standard-category","embeddable":true,"href":"https:\/\/www.packtests.com\/cs\/wp-json\/wp\/v2\/standard-category?post=1500"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}