{"id":1440,"date":"2026-07-23T07:24:13","date_gmt":"2026-07-23T07:24:13","guid":{"rendered":"https:\/\/www.packtests.com\/?post_type=standard&#038;p=1440"},"modified":"2026-07-23T07:24:53","modified_gmt":"2026-07-23T07:24:53","slug":"astm-d1922","status":"publish","type":"standard","link":"https:\/\/www.packtests.com\/cs\/standard\/astm-d1922\/","title":{"rendered":"ASTM D1922"},"content":{"rendered":"<p class=\"wp-block-paragraph\"><strong>ASTM D1922<\/strong> je jedn\u00edm z nejroz\u0161\u00ed\u0159en\u011bj\u0161\u00edch standard\u016f pro hodnocen\u00ed <strong>pevnost plastov\u00e9 f\u00f3lie v tahu<\/strong> a tenk\u00e9 plastov\u00e9 f\u00f3lie. V odv\u011btv\u00edch, jako jsou flexibiln\u00ed obaly, obaly pro zdravotnictv\u00ed, obaly na potraviny, zem\u011bd\u011blstv\u00ed a pr\u016fmyslov\u00e9 f\u00f3lie, je odolnost proti roztr\u017een\u00ed kl\u00ed\u010dovou mechanickou vlastnost\u00ed, kter\u00e1 p\u0159\u00edmo ovliv\u0148uje trvanlivost v\u00fdrobku, jeho manipulaci a spolehlivost p\u0159i kone\u010dn\u00e9m pou\u017eit\u00ed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Na str\u00e1nk\u00e1ch <strong>Zkou\u0161ka pevnosti v trh\u00e1n\u00ed podle Elmendorfa<\/strong> poskytuje rychlou, opakovatelnou a standardizovanou metodu pro stanoven\u00ed s\u00edly pot\u0159ebn\u00e9 k roz\u0161\u00ed\u0159en\u00ed st\u00e1vaj\u00edc\u00edho trhliny ve vzorku. Na rozd\u00edl od zkou\u0161ky tahem, p\u0159i kter\u00e9 se m\u011b\u0159\u00ed odolnost proti prota\u017een\u00ed a\u017e do p\u0159etr\u017een\u00ed, tato <strong>Elmendorfova metoda<\/strong> zam\u011b\u0159uje se na \u0161\u00ed\u0159en\u00ed trhliny po proveden\u00ed \u0159\u00edzen\u00e9ho po\u010d\u00e1te\u010dn\u00edho \u0159ezu. D\u00edky tomu je norma ASTM D1922 obzvl\u00e1\u0161t\u011b u\u017eite\u010dn\u00e1 pro kontrolu kvality, v\u00fdvoj materi\u00e1l\u016f a srovn\u00e1v\u00e1n\u00ed v\u00fdrobk\u016f.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A\u0165 u\u017e jde o v\u00fdb\u011br obalov\u00fdch f\u00f3li\u00ed, ov\u011b\u0159ov\u00e1n\u00ed konzistence v\u00fdroby nebo porovn\u00e1v\u00e1n\u00ed slo\u017een\u00ed plastov\u00fdch sm\u011bs\u00ed, norma ASTM D1922 nab\u00edz\u00ed v\u00fdrobc\u016fm praktick\u00fd a mezin\u00e1rodn\u011b uzn\u00e1van\u00fd p\u0159\u00edstup k m\u011b\u0159en\u00ed odolnosti proti roztr\u017een\u00ed.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Co je norma ASTM D1922?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>ASTM D1922<\/strong> je standardn\u00ed zku\u0161ebn\u00ed metoda pro stanoven\u00ed odolnosti plastov\u00fdch f\u00f3li\u00ed a tenk\u00fdch desek proti \u0161\u00ed\u0159en\u00ed trhliny metodou kyvadla.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tato norma m\u011b\u0159\u00ed energii pot\u0159ebnou k tomu, aby kyvadlo pokra\u010dovalo v trh\u00e1n\u00ed vzorku pot\u00e9, co v n\u011bm byla vytvo\u0159ena po\u010d\u00e1te\u010dn\u00ed trhlina. Ztr\u00e1ta potenci\u00e1ln\u00ed energie b\u011bhem v\u00fdkyvu kyvadla se p\u0159ev\u00e1d\u00ed na hodnoty odolnosti proti roztr\u017een\u00ed, co\u017e laborato\u0159\u00edm umo\u017e\u0148uje porovn\u00e1vat materi\u00e1ly za jednotn\u00fdch zku\u0161ebn\u00edch podm\u00ednek.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tato metoda se stala m\u011b\u0159\u00edtkem v oboru, proto\u017ee nab\u00edz\u00ed:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Vynikaj\u00edc\u00ed opakovatelnost<\/li>\n\n\n\n<li>Rychl\u00e9 testovac\u00ed cykly<\/li>\n\n\n\n<li>Minim\u00e1ln\u00ed vliv obsluhy<\/li>\n\n\n\n<li>Spolehliv\u00e9 srovn\u00e1n\u00ed materi\u00e1l\u016f<\/li>\n\n\n\n<li>Jednoduch\u00fd v\u00fdklad v\u00fdsledk\u016f<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-7387b849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\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\/SLD-01-tear-testing.webp\" alt=\"ASTM D1922 COF-01 \u2013 Elemendorf\u016fv trhac\u00ed tester\" class=\"wp-image-1442\" style=\"width:273px;height:auto\" title=\"\" srcset=\"https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/07\/SLD-01-tear-testing.webp 600w, https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/07\/SLD-01-tear-testing-300x300.webp 300w, https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/07\/SLD-01-tear-testing-150x150.webp 150w, https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/07\/SLD-01-tear-testing-12x12.webp 12w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><\/div>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Vzhledem k tomu, \u017ee \u0161\u00ed\u0159en\u00ed trhliny \u010dasto rozhoduje o tom, zda obal vydr\u017e\u00ed manipulaci nebo se b\u011bhem p\u0159epravy po\u0161kod\u00ed, hraje norma ASTM D1922 d\u016fle\u017eitou roli p\u0159i zaji\u0161\u0165ov\u00e1n\u00ed kvality obal\u016f.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Pro\u010d je pevnost plastov\u00e9 f\u00f3lie v trh\u00e1n\u00ed d\u016fle\u017eit\u00e1?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Na str\u00e1nk\u00e1ch <strong>pevnost plastov\u00e9 f\u00f3lie v tahu<\/strong> ovliv\u0148uje v\u00fdkonnost v\u00fdrobk\u016f b\u011bhem v\u00fdroby, p\u0159epravy, skladov\u00e1n\u00ed i p\u0159i pou\u017e\u00edv\u00e1n\u00ed spot\u0159ebiteli.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Mezi p\u0159\u00edklady pat\u0159\u00ed:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u017d\u00e1dost<\/th><th>Pro\u010d je odolnost proti roztr\u017een\u00ed d\u016fle\u017eit\u00e1<\/th><\/tr><\/thead><tbody><tr><td>Obaly na potraviny<\/td><td>Zabra\u0148te n\u00e1hodn\u00e9mu prasknut\u00ed obalu b\u011bhem pln\u011bn\u00ed a p\u0159epravy<\/td><\/tr><tr><td>Zdravotnick\u00e9 obaly<\/td><td>A\u017e do otev\u0159en\u00ed udr\u017eujte neporu\u0161enost steriln\u00ed bari\u00e9ry<\/td><\/tr><tr><td>Pr\u016fmyslov\u00e9 f\u00f3lie<\/td><td>Odolnost proti roztr\u017een\u00ed p\u0159i instalaci a p\u0159i intenzivn\u00edm zach\u00e1zen\u00ed<\/td><\/tr><tr><td>Zem\u011bd\u011blsk\u00e9 f\u00f3lie<\/td><td>Odol\u00e1v\u00e1 vliv\u016fm prost\u0159ed\u00ed a mechanick\u00e9mu nam\u00e1h\u00e1n\u00ed<\/td><\/tr><tr><td>F\u00f3lie pro natahov\u00e1n\u00ed a smr\u0161\u0165ov\u00e1n\u00ed<\/td><td>Sn\u00ed\u017een\u00ed \u0161kod p\u0159i balen\u00ed palet<\/td><\/tr><tr><td>Spot\u0159ebitelsk\u00e9 obaly<\/td><td>Umo\u017e\u0148uje kontrolovan\u00e9 otev\u00edr\u00e1n\u00ed bez rizika katastrof\u00e1ln\u00edho roztr\u017een\u00ed<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">N\u00edzk\u00e1 odolnost proti roztr\u017een\u00ed m\u016f\u017ee m\u00edt za n\u00e1sledek:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Po\u0161kozen\u00ed v\u00fdrobku<\/li>\n\n\n\n<li>\u00danik obsahu balen\u00ed<\/li>\n\n\n\n<li>N\u00e1r\u016fst mno\u017estv\u00ed odpadu<\/li>\n\n\n\n<li>St\u00ed\u017enosti z\u00e1kazn\u00edk\u016f<\/li>\n\n\n\n<li>Vy\u0161\u0161\u00ed v\u00fdrobn\u00ed n\u00e1klady<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Norma ASTM D1922 pom\u00e1h\u00e1 v\u00fdrobc\u016fm optimalizovat materi\u00e1ly je\u0161t\u011b p\u0159edt\u00edm, ne\u017e k t\u011bmto poruch\u00e1m dojde.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Porozum\u011bn\u00ed zkou\u0161ce pevnosti v trh\u00e1n\u00ed podle Elmendorfa<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Na str\u00e1nk\u00e1ch <strong>Zkou\u0161ka pevnosti v trh\u00e1n\u00ed podle Elmendorfa<\/strong> byla p\u016fvodn\u011b vyvinuta Arminem Elmendorfem a dodnes pat\u0159\u00ed k nejd\u016fv\u011bryhodn\u011bj\u0161\u00edm metod\u00e1m pro hodnocen\u00ed \u0161\u00ed\u0159en\u00ed trhlin.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u00edsto m\u011b\u0159en\u00ed s\u00edly pot\u0159ebn\u00e9 k vytvo\u0159en\u00ed nov\u00e9ho trhliny se p\u0159i t\u00e9to zkou\u0161ce m\u011b\u0159\u00ed energie pot\u0159ebn\u00e1 k udr\u017een\u00ed ji\u017e existuj\u00edc\u00ed trhliny.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Z\u00e1kladn\u00ed princip je jednoduch\u00fd:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Vzorek se p\u0159iprav\u00ed se standardizovanou \u0161t\u011brbinou.<\/li>\n\n\n\n<li>Vzorek je pevn\u011b upnut.<\/li>\n\n\n\n<li>Kalibrovan\u00e9 kyvadlo se uvoln\u00ed.<\/li>\n\n\n\n<li>Kyvadlo roztrhne zb\u00fdvaj\u00edc\u00ed vzorek.<\/li>\n\n\n\n<li>Energetick\u00e1 ztr\u00e1ta se p\u0159em\u011b\u0148uje na odolnost proti roztr\u017een\u00ed.<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">Vzhledem k tomu, \u017ee pohyb kyvadla je p\u0159esn\u011b \u0159\u00edzen, <strong>Elmendorfova metoda<\/strong> poskytuje vysoce reprodukovateln\u00e9 v\u00fdsledky vhodn\u00e9 pro kontrolu kvality v laborato\u0159i.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Zku\u0161ebn\u00ed postup podle normy ASTM D1922<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Typick\u00fd <strong>ASTM D1922<\/strong> Test prob\u00edh\u00e1 podle n\u011bkolika standardizovan\u00fdch krok\u016f.<\/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\">Obd\u00e9ln\u00edkov\u00e9 vzorky se vy\u0159ez\u00e1vaj\u00ed podle standardn\u00edch rozm\u011br\u016f.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">P\u0159esn\u00fd \u0159ezac\u00ed n\u016f\u017e vytvo\u0159\u00ed z\u00e1\u0159ez, kter\u00fd kon\u010d\u00ed p\u0159ibli\u017en\u011b <strong>43 mm od protilehl\u00e9ho okraje<\/strong>, \u010d\u00edm\u017e se zajist\u00ed, \u017ee ka\u017ed\u00fd vzorek za\u010d\u00edn\u00e1 identick\u00fdm natr\u017een\u00edm.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Spr\u00e1vn\u00e1 p\u0159\u00edprava vzorku je z\u00e1sadn\u00ed, proto\u017ee nesourod\u00e1 geometrie \u0161t\u011brbiny m\u016f\u017ee v\u00fdsledky v\u00fdrazn\u011b ovlivnit.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Upevn\u011bn\u00ed vzorku<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Vzorek je pevn\u011b upevn\u011bn mezi dv\u011bma svorkami.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Rovnom\u011brn\u00fd up\u00ednac\u00ed tlak zabra\u0148uje prokluzu b\u011bhem zkou\u0161ky a zvy\u0161uje opakovatelnost.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Modern\u00ed <strong>p\u0159\u00edstroj na zkou\u0161en\u00ed odolnosti proti roztr\u017een\u00ed<\/strong> V t\u011bchto syst\u00e9mech se \u010dasto vyu\u017e\u00edv\u00e1 pneumatick\u00e9 up\u00edn\u00e1n\u00ed, aby se omezila variabilita zp\u016fsoben\u00e1 obsluhou.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Uvoln\u011bn\u00ed kyvadla<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Kyvadlo se uvoln\u00ed automaticky.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">P\u0159i pr\u016fchodu vzorkem roz\u0161i\u0159uje trhlinu a z\u00e1rove\u0148 ztr\u00e1c\u00ed \u010d\u00e1st sv\u00e9 potenci\u00e1ln\u00ed energie.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tato energetick\u00e1 ztr\u00e1ta p\u0159\u00edmo odpov\u00edd\u00e1 odolnosti materi\u00e1lu proti roztr\u017een\u00ed.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">V\u00fdpo\u010det v\u00fdsledku<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">P\u0159\u00edstroj automaticky p\u0159ev\u00e1d\u00ed nam\u011b\u0159enou energii na hodnoty odolnosti proti roztr\u017een\u00ed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u011bt\u0161ina modern\u00edch tester\u016f prov\u00e1d\u00ed n\u00e1sleduj\u00edc\u00ed v\u00fdpo\u010dty:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>V\u00fdsledky jednotliv\u00fdch test\u016f<\/li>\n\n\n\n<li>Pr\u016fm\u011brn\u00e1 pevnost v trh\u00e1n\u00ed<\/li>\n\n\n\n<li>Statistick\u00e1 anal\u00fdza<\/li>\n\n\n\n<li>Sm\u011brodatn\u00e1 odchylka<\/li>\n\n\n\n<li>V p\u0159\u00edslu\u0161n\u00fdch p\u0159\u00edpadech prov\u00e9st p\u0159evody mezi jednotkami<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Automatizovan\u00e9 v\u00fdpo\u010dty eliminuj\u00ed chyby zp\u016fsoben\u00e9 ru\u010dn\u00edm zad\u00e1v\u00e1n\u00edm a zvy\u0161uj\u00ed efektivitu laborato\u0159e.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Jak\u00e9 materi\u00e1ly lze posoudit podle normy ASTM D1922?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Norma ASTM D1922 je vhodn\u00e1 pro celou \u0159adu pru\u017en\u00fdch materi\u00e1l\u016f.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Mezi typick\u00e9 materi\u00e1ly pat\u0159\u00ed:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Polyethylen (PE)<\/li>\n\n\n\n<li>Polypropylen (PP)<\/li>\n\n\n\n<li>PET f\u00f3lie<\/li>\n\n\n\n<li>PVC f\u00f3lie<\/li>\n\n\n\n<li>Bari\u00e9rov\u00e9 f\u00f3lie<\/li>\n\n\n\n<li>Laminovan\u00e9 f\u00f3lie<\/li>\n\n\n\n<li>Metalizovan\u00e9 f\u00f3lie<\/li>\n\n\n\n<li>Flexibiln\u00ed kompozitn\u00ed obaly<\/li>\n\n\n\n<li>Plastov\u00e9 f\u00f3lie<\/li>\n\n\n\n<li>Tenk\u00e9 pr\u016fmyslov\u00e9 f\u00f3lie<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">A\u010dkoli jsou tyto metody ur\u010deny p\u0159edev\u0161\u00edm pro plastov\u00e9 f\u00f3lie, podobn\u00e9 principy zkou\u0161ek trh\u00e1n\u00ed kyvadlem se podle r\u016fzn\u00fdch mezin\u00e1rodn\u00edch norem uplat\u0148uj\u00ed tak\u00e9 u pap\u00edru, netkan\u00fdch materi\u00e1l\u016f a textili\u00ed.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Odv\u011btv\u00ed, kter\u00e1 t\u011b\u017e\u00ed z normy ASTM D1922<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Mnoh\u00e1 odv\u011btv\u00ed se spol\u00e9haj\u00ed na spolehliv\u00e9 \u00fadaje o odolnosti proti roztr\u017een\u00ed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Mezi b\u011b\u017en\u00e9 u\u017eivatele pat\u0159\u00ed:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>V\u00fdrobci flexibiln\u00edch obal\u016f<\/li>\n\n\n\n<li>Spole\u010dnosti zab\u00fdvaj\u00edc\u00ed se balen\u00edm zdravotnick\u00fdch prost\u0159edk\u016f<\/li>\n\n\n\n<li>Dodavatel\u00e9 farmaceutick\u00fdch obal\u016f<\/li>\n\n\n\n<li>V\u00fdrobci obal\u016f na potraviny<\/li>\n\n\n\n<li>V\u00fdrobci plastov\u00fdch f\u00f3li\u00ed<\/li>\n\n\n\n<li>V\u00fdrobci zem\u011bd\u011blsk\u00fdch f\u00f3li\u00ed<\/li>\n\n\n\n<li>Pr\u016fmyslov\u00e9 za\u0159\u00edzen\u00ed na vyvol\u00e1v\u00e1n\u00ed film\u016f<\/li>\n\n\n\n<li>V\u00fdzkumn\u00e9 laborato\u0159e<\/li>\n\n\n\n<li>Univerzity<\/li>\n\n\n\n<li>Nez\u00e1visl\u00e9 zku\u0161ebn\u00ed laborato\u0159e<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Pro tyto organizace norma ASTM D1922 slou\u017e\u00ed jak k kontrole p\u0159\u00edchoz\u00edch materi\u00e1l\u016f, tak k ov\u011b\u0159ov\u00e1n\u00ed hotov\u00fdch v\u00fdrobk\u016f.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Faktory ovliv\u0148uj\u00edc\u00ed v\u00fdsledky zkou\u0161ky na trh\u00e1n\u00ed<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Na nam\u011b\u0159enou hodnotu m\u016f\u017ee m\u00edt vliv n\u011bkolik prom\u011bnn\u00fdch <strong>pevnost plastov\u00e9 f\u00f3lie v tahu<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Mezi n\u011b pat\u0159\u00ed:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Tlou\u0161\u0165ka vrstvy<\/li>\n\n\n\n<li>Molekul\u00e1rn\u00ed orientace polymeru<\/li>\n\n\n\n<li>Sm\u011br extruze (MD vs. TD)<\/li>\n\n\n\n<li>Slo\u017een\u00ed prysky\u0159ice<\/li>\n\n\n\n<li>P\u0159\u00edsady<\/li>\n\n\n\n<li>Teplota<\/li>\n\n\n\n<li>Vlhkost<\/li>\n\n\n\n<li>Kvalita p\u0159\u00edpravy vzork\u016f<\/li>\n\n\n\n<li>V\u00fdb\u011br nosnosti kyvadla<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Udr\u017eov\u00e1n\u00ed kontrolovan\u00fdch laboratorn\u00edch podm\u00ednek je nezbytn\u00e9 pro z\u00edsk\u00e1n\u00ed smyslupln\u00fdch a reprodukovateln\u00fdch \u00fadaj\u016f.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">ASTM D1922 vs. ISO 6383-1<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Mnoho mezin\u00e1rodn\u00edch laborato\u0159\u00ed prov\u00e1d\u00ed zkou\u0161ky podle norem ASTM i ISO.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Funkce<\/th><th>ASTM D1922<\/th><th>ISO 6383-1<\/th><\/tr><\/thead><tbody><tr><td>Princip testu<\/td><td>Trhlina zp\u016fsoben\u00e1 \u0161\u00ed\u0159en\u00edm kyvadlov\u00e9ho pohybu<\/td><td>Trhlina zp\u016fsoben\u00e1 \u0161\u00ed\u0159en\u00edm kyvadlov\u00e9ho pohybu<\/td><\/tr><tr><td>Zku\u0161ebn\u00ed metoda<\/td><td>Elmendorfova metoda<\/td><td>Elmendorfova metoda<\/td><\/tr><tr><td>Hlavn\u00ed pou\u017eit\u00ed<\/td><td>Plastov\u00e9 f\u00f3lie a tenk\u00e9 plachty<\/td><td>Plastov\u00e9 f\u00f3lie a plachty<\/td><\/tr><tr><td>V\u00fdsledek<\/td><td>Odolnost proti \u0161\u00ed\u0159en\u00ed trhlin<\/td><td>Odolnost proti \u0161\u00ed\u0159en\u00ed trhlin<\/td><\/tr><tr><td>Mezin\u00e1rodn\u00ed pou\u017eit\u00ed<\/td><td>Severn\u00ed Amerika<\/td><td>Mezin\u00e1rodn\u00ed trhy<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Ob\u011b normy vych\u00e1zej\u00ed z t\u00e9m\u011b\u0159 identick\u00fdch princip\u016f testov\u00e1n\u00ed, co\u017e glob\u00e1ln\u00edm v\u00fdrobc\u016fm usnad\u0148uje srovn\u00e1v\u00e1n\u00ed v\u00fdkonnosti v\u00fdrobk\u016f na r\u016fzn\u00fdch trz\u00edch.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">V\u00fdb\u011br p\u0159\u00edstroje na zkou\u0161en\u00ed odolnosti proti roztr\u017een\u00ed<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Spolehliv\u00fd <strong><a href=\"https:\/\/www.packtests.com\/cs\/product\/elmendorf-tearing-tester\/\" target=\"_blank\" rel=\"noreferrer noopener\">p\u0159\u00edstroj na zkou\u0161en\u00ed odolnosti proti roztr\u017een\u00ed<\/a><\/strong> m\u011blo by zajistit p\u0159esn\u00fd pohyb kyvadla, stabiln\u00ed upnut\u00ed vzorku a automatizovan\u00e9 zpracov\u00e1n\u00ed dat.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Mezi d\u016fle\u017eit\u00e9 funkce pat\u0159\u00ed:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Pr\u016fmyslov\u00e9 \u0159\u00edzen\u00ed pomoc\u00ed PLC<\/li>\n\n\n\n<li>Dotykov\u00e9 rozhran\u00ed<\/li>\n\n\n\n<li>Automatick\u00e9 uvoln\u011bn\u00ed kyvadla<\/li>\n\n\n\n<li>Pneumatick\u00e9 up\u00edn\u00e1n\u00ed vzork\u016f<\/li>\n\n\n\n<li>R\u016fzn\u00e9 nosnosti kyvadel<\/li>\n\n\n\n<li>Ov\u011b\u0159en\u00ed kalibrace<\/li>\n\n\n\n<li>Statistick\u00e1 anal\u00fdza<\/li>\n\n\n\n<li>Mo\u017enost exportu dat<\/li>\n\n\n\n<li>Voliteln\u00fd profesion\u00e1ln\u00ed software<\/li>\n\n\n\n<li>Sledovatelnost v laborato\u0159i<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Tyto funkce pom\u00e1haj\u00ed zajistit konzistentn\u00ed v\u00fdsledky a z\u00e1rove\u0148 omezuj\u00ed vliv obsluhy.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Zku\u0161ebn\u00ed stroj na odolnost proti roztr\u017een\u00ed Cell Instruments SLD-01<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Na str\u00e1nk\u00e1ch <strong>SLD-01 <a href=\"https:\/\/www.packtests.com\/cs\/product\/elmendorf-tearing-tester\/\" target=\"_blank\" rel=\"noreferrer noopener\">P\u0159\u00edstroj na zkou\u0161en\u00ed odolnosti proti roztr\u017een\u00ed<\/a><\/strong> od spole\u010dnosti Cell Instruments je ur\u010den pro standardizovan\u00e9 zkou\u0161ky odolnosti proti trh\u00e1n\u00ed kyvadlem v souladu s <strong>ASTM D1922<\/strong> a <strong>ISO 6383-1<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Mezi kl\u00ed\u010dov\u00e9 funkce pat\u0159\u00ed:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Provoz \u0159\u00edzen\u00fd programovateln\u00fdm logick\u00fdm automatem (PLC) s intuitivn\u00edm dotykov\u00fdm displejem HMI<\/li>\n\n\n\n<li>Pneumatick\u00e9 up\u00edn\u00e1n\u00ed vzork\u016f pro lep\u0161\u00ed opakovatelnost<\/li>\n\n\n\n<li>Automatick\u00e9 uvoln\u011bn\u00ed kyvadla pro minimalizaci vlivu obsluhy<\/li>\n\n\n\n<li>R\u016fzn\u00e9 nosnosti kyvadel: <strong>200, 400, 800, 1600, 3200 a 6400 gf<\/strong><\/li>\n\n\n\n<li>Integrovan\u00e1 kontrola kalibra\u010dn\u00edch z\u00e1va\u017e\u00ed<\/li>\n\n\n\n<li>Automatick\u00e9 statistick\u00e9 v\u00fdpo\u010dty<\/li>\n\n\n\n<li>Voliteln\u00e1 komunikace p\u0159es rozhran\u00ed RS-232 a mikrotisk\u00e1rna<\/li>\n\n\n\n<li>Voliteln\u00fd profesion\u00e1ln\u00ed software pro pokro\u010dil\u00e9 vytv\u00e1\u0159en\u00ed p\u0159ehled\u016f a spr\u00e1vu dat<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Tento syst\u00e9m je vhodn\u00fd pro laborato\u0159e zab\u00fdvaj\u00edc\u00ed se kontrolou kvality, odd\u011blen\u00ed v\u00fdzkumu a v\u00fdvoje, v\u00fdrobce obal\u016f, v\u00fdrobce f\u00f3li\u00ed a nez\u00e1visl\u00e9 zku\u0161ebn\u00ed laborato\u0159e, kter\u00e9 pot\u0159ebuj\u00ed spolehliv\u00e1 m\u011b\u0159en\u00ed trh\u00e1n\u00ed p\u0159i \u0161\u00ed\u0159en\u00ed.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Osv\u011bd\u010den\u00e9 postupy pro zkou\u0161ky podle normy ASTM D1922<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Pro zaji\u0161t\u011bn\u00ed co nejvy\u0161\u0161\u00ed p\u0159esnosti testov\u00e1n\u00ed:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>P\u0159ed zkou\u0161kou vzorky p\u0159ipravte.<\/li>\n\n\n\n<li>K p\u0159\u00edprav\u011b vzork\u016f pou\u017e\u00edvejte ostr\u00e9 \u0159ezn\u00e9 n\u00e1stroje.<\/li>\n\n\n\n<li>Zvolte spr\u00e1vnou nosnost kyvadla.<\/li>\n\n\n\n<li>Prove\u010fte zkou\u0161ku jak v pod\u00e9ln\u00e9m sm\u011bru (MD), tak v p\u0159\u00ed\u010dn\u00e9m sm\u011bru (TD).<\/li>\n\n\n\n<li>Pro zaji\u0161t\u011bn\u00ed statistick\u00e9 spolehlivosti prove\u010fte dostate\u010dn\u00fd po\u010det opakov\u00e1n\u00ed.<\/li>\n\n\n\n<li>P\u0159\u00edstroj pravideln\u011b kalibrujte.<\/li>\n\n\n\n<li>Udr\u017eujte v laborato\u0159i st\u00e1lou teplotu a vlhkost.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Dodr\u017eov\u00e1n\u00ed t\u011bchto postup\u016f zvy\u0161uje opakovatelnost a zaji\u0161\u0165uje spolehliv\u00e9 srovn\u00e1n\u00ed mezi jednotliv\u00fdmi v\u00fdrobn\u00edmi \u0161ar\u017eemi.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Z\u00e1v\u011br<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/store.astm.org\/d1922-23.html\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">ASTM D1922<\/a> z\u016fst\u00e1v\u00e1 v tomto odv\u011btv\u00ed preferovan\u00fdm standardem pro hodnocen\u00ed <strong>pevnost plastov\u00e9 f\u00f3lie v tahu<\/strong> s vyu\u017eit\u00edm osv\u011bd\u010den\u00e9ho <strong>Zkou\u0161ka pevnosti v trh\u00e1n\u00ed podle Elmendorfa<\/strong>. Je to jednoduch\u00e9, ale vysoce opakovateln\u00e9 <strong>Elmendorfova metoda<\/strong> umo\u017e\u0148uje v\u00fdrobc\u016fm p\u0159esn\u011b posoudit \u0161\u00ed\u0159en\u00ed trhliny, porovnat vlastnosti materi\u00e1l\u016f, optimalizovat konstrukci v\u00fdrobk\u016f a pos\u00edlit kontrolu kvality.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V kombinaci s modern\u00edm <strong>p\u0159\u00edstroj na zkou\u0161en\u00ed odolnosti proti roztr\u017een\u00ed<\/strong> jako nap\u0159\u00edklad Cell Instruments <strong>SLD-01 Zku\u0161ebn\u00ed stroj na odolnost proti roztr\u017een\u00ed<\/strong>, laborato\u0159e mohou dos\u00e1hnout efektivn\u00edch testovac\u00edch postup\u016f, spolehliv\u00fdch \u00fadaj\u016f a v\u011bt\u0161\u00ed jistoty ohledn\u011b vlastnost\u00ed materi\u00e1l\u016f v oblastech balen\u00ed, zdravotnictv\u00ed, pr\u016fmyslu i spot\u0159ebn\u00edho zbo\u017e\u00ed.<\/p>","protected":false},"excerpt":{"rendered":"<p>ASTM D1922 is one of the most widely adopted standards for evaluating the tear strength of plastic film and thin plastic sheeting. In industries such as flexible packaging, medical packaging, food packaging, agriculture, and industrial films, tear resistance is a critical mechanical property that directly affects product durability, handling performance, and end-use reliability. The Elmendorf [&hellip;]<\/p>","protected":false},"featured_media":1442,"parent":0,"template":"","meta":{"_acf_changed":false},"standard-category":[],"class_list":["post-1440","standard","type-standard","status-publish","has-post-thumbnail","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.packtests.com\/cs\/wp-json\/wp\/v2\/standard\/1440","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":4,"href":"https:\/\/www.packtests.com\/cs\/wp-json\/wp\/v2\/standard\/1440\/revisions"}],"predecessor-version":[{"id":1600,"href":"https:\/\/www.packtests.com\/cs\/wp-json\/wp\/v2\/standard\/1440\/revisions\/1600"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.packtests.com\/cs\/wp-json\/wp\/v2\/media\/1442"}],"wp:attachment":[{"href":"https:\/\/www.packtests.com\/cs\/wp-json\/wp\/v2\/media?parent=1440"}],"wp:term":[{"taxonomy":"standard-category","embeddable":true,"href":"https:\/\/www.packtests.com\/cs\/wp-json\/wp\/v2\/standard-category?post=1440"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}