{"id":9863,"date":"2026-02-24T15:11:46","date_gmt":"2026-02-24T07:11:46","guid":{"rendered":"https:\/\/www.packqc.com\/standard\/astm-d1004\/"},"modified":"2026-04-16T09:53:04","modified_gmt":"2026-04-16T01:53:04","slug":"astm-d1004","status":"publish","type":"standard","link":"https:\/\/www.packqc.com\/cs\/standard\/astm-d1004\/","title":{"rendered":"ASTM D1004"},"content":{"rendered":"<h2 class=\"wp-block-heading\">ASTM D1004 a Gravesova zkou\u0161ka odolnosti proti roztr\u017een\u00ed a roztr\u017een\u00ed<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Gravesova slza - Co m\u011b\u0159\u00ed<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The <strong data-start=\"1299\" data-end=\"1314\">Hrobov\u00e1 trhlina<\/strong> test vyhodnocuje s\u00edlu pot\u0159ebnou k <strong data-start=\"1352\" data-end=\"1372\">zah\u00e1jen\u00ed trh\u00e1n\u00ed<\/strong> ve vroubkovan\u00e9m vzorku. Na rozd\u00edl od jin\u00fdch metod m\u011b\u0159en\u00ed \u0161\u00ed\u0159en\u00ed trhlin se tato metoda zam\u011b\u0159uje na <em data-start=\"1475\" data-end=\"1504\">okam\u017eik, kdy za\u010d\u00edn\u00e1 trh\u00e1n\u00ed<\/em>, co\u017e umo\u017e\u0148uje nahl\u00e9dnout do reakce na koncentraci nap\u011bt\u00ed a hou\u017eevnatosti materi\u00e1lu.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Zkou\u0161ka odolnosti proti roztr\u017een\u00ed plastov\u00e9 f\u00f3lie a listu<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The <strong data-start=\"1642\" data-end=\"1666\">zkou\u0161ka odolnosti proti roztr\u017een\u00ed<\/strong> podle normy ASTM D1004 pou\u017e\u00edv\u00e1 p\u0159esn\u011b definovanou geometrii vzorku, n\u00edzkou m\u00edru zat\u00ed\u017een\u00ed <em data-start=\"1750\" data-end=\"1761\">51 mm\/min<\/em>, a separa\u010dn\u00ed stroj s konstantn\u00ed rychlost\u00ed uchopen\u00ed. Tato konfigurace zaji\u0161\u0165uje, \u017ee zkou\u0161ka odr\u00e1\u017e\u00ed skute\u010dn\u00e9 chov\u00e1n\u00ed materi\u00e1lu bez maskov\u00e1n\u00ed nedostatk\u016f zp\u016fsoben\u00fdch kol\u00eds\u00e1n\u00edm tlou\u0161\u0165ky nebo lok\u00e1ln\u00edmi vadami.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Pro\u010d z\u00e1le\u017e\u00ed na odolnosti plastov\u00fdch f\u00f3li\u00ed a plech\u016f proti roztr\u017een\u00ed?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The <strong data-start=\"2024\" data-end=\"2069\">odolnost plastov\u00fdch f\u00f3li\u00ed a desek proti roztr\u017een\u00ed<\/strong> ovliv\u0148uje kl\u00ed\u010dov\u00e9 faktory v\u00fdkonu:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Odolnost obalu p\u0159i manipulaci<\/li>\n\n\n\n<li>Odolnost proti poruch\u00e1m zp\u016fsoben\u00fdm pr\u016frazem<\/li>\n\n\n\n<li>Udr\u017een\u00ed t\u011bsn\u011bn\u00ed p\u0159i mechanick\u00e9m zat\u00ed\u017een\u00ed<\/li>\n\n\n\n<li>Vhodnost pro l\u00e9ka\u0159sk\u00e9, farmaceutick\u00e9, potravin\u00e1\u0159sk\u00e9 nebo pr\u016fmyslov\u00e9 aplikace<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Proto\u017ee pevnost v roztr\u017een\u00ed z\u00e1vis\u00ed na slo\u017een\u00ed polymeru, orientaci a podm\u00ednk\u00e1ch zpracov\u00e1n\u00ed, norma ASTM D1004 nab\u00edz\u00ed standardizovan\u00fd a spolehliv\u00fd zp\u016fsob porovn\u00e1v\u00e1n\u00ed materi\u00e1l\u016f s podobn\u00fdm rozsahem tlou\u0161\u0165ky.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Kl\u00ed\u010dov\u00e9 z\u00e1sady a zku\u0161ebn\u00ed podm\u00ednky normy ASTM D1004<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1. \u0158\u00edzen\u00e9 zat\u00ed\u017een\u00ed a geometrie vzorku<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Norma ASTM D1004 vy\u017eaduje tvar vzorku, kter\u00fd vytv\u00e1\u0159\u00ed <strong data-start=\"2678\" data-end=\"2702\">koncentrace nap\u011bt\u00ed<\/strong> v bl\u00edzkosti z\u00e1\u0159ezu. D\u00edky tomu doch\u00e1z\u00ed k trh\u00e1n\u00ed v definovan\u00e9 oblasti, co\u017e umo\u017e\u0148uje opakovateln\u00e9 v\u00fdsledky i u pru\u017en\u00fdch f\u00f3li\u00ed.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. Maxim\u00e1ln\u00ed zat\u00ed\u017een\u00ed jako hodnota odolnosti proti roztr\u017een\u00ed<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The <em data-start=\"2875\" data-end=\"2918\">maxim\u00e1ln\u00ed s\u00edla pozorovan\u00e1 p\u0159i vzniku trhliny<\/em> p\u0159edstavuje odolnost materi\u00e1lu proti roztr\u017een\u00ed. D\u016fle\u017eit\u00e9 je, \u017ee norma stanov\u00ed, \u017ee s\u00edly p\u016fsob\u00edc\u00ed na roztr\u017een\u00ed by m\u011bly b\u00fdt <strong data-start=\"3022\" data-end=\"3029\">ne<\/strong> normalizovat podle tlou\u0161\u0165ky v \u0161irok\u00fdch variac\u00edch, proto\u017ee to m\u016f\u017ee v\u00e9st k nep\u0159esn\u00fdm z\u00e1v\u011br\u016fm.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3. Omezen\u00ed materi\u00e1lu<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">ASTM D1004 se nejl\u00e9pe pou\u017e\u00edv\u00e1, kdy\u017e:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Film <strong data-start=\"3202\" data-end=\"3239\">nedoch\u00e1z\u00ed ke k\u0159ehk\u00e9mu selh\u00e1n\u00ed<\/strong><\/li>\n\n\n\n<li>Roz\u0161\u00ed\u0159en\u00ed materi\u00e1lu je <strong data-start=\"3270\" data-end=\"3288\">m\u00e9n\u011b ne\u017e 200%<\/strong><\/li>\n\n\n\n<li>Kol\u00eds\u00e1n\u00ed tlou\u0161\u0165ky z\u016fst\u00e1v\u00e1 v r\u00e1mci <strong data-start=\"3328\" data-end=\"3336\">\u00b110%<\/strong><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Tato omezen\u00ed zachov\u00e1vaj\u00ed d\u016fv\u011bryhodnost v\u00fdsledk\u016f a zabra\u0148uj\u00ed chyb\u00e1m vyvolan\u00fdm extr\u00e9mn\u00edm prodlou\u017een\u00edm nebo chov\u00e1n\u00edm p\u0159i \u0161t\u011bpen\u00ed.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Postup zkou\u0161ky podle normy ASTM D1004 krok za krokem<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1. P\u0159\u00edprava vzork\u016f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">P\u0159ipravte vzorky podle normalizovan\u00fdch rozm\u011br\u016f a geometrie vrub\u016f. Pro zv\u00fd\u0161en\u00ed p\u0159esnosti zm\u011b\u0159te tlou\u0161\u0165ku ve v\u00edce bodech v oblasti z\u00e1\u0159ezu.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. Nastaven\u00ed stroje<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Po\u010d\u00e1te\u010dn\u00ed odd\u011blen\u00ed sev\u0159en\u00ed: <strong data-start=\"3784\" data-end=\"3795\">25,4 mm<\/strong><\/li>\n\n\n\n<li>Rychlost uchopen\u00ed: <strong data-start=\"3815\" data-end=\"3828\">51 mm\/min<\/strong><\/li>\n\n\n\n<li>Re\u017eim odd\u011blen\u00ed s konstantn\u00ed rychlost\u00ed uchopen\u00ed<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">3. Polohov\u00e1n\u00ed<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Vyrovnejte dlouhou osu vzorku s osou \u00fachyt\u016f, aby nedo\u0161lo ke zkroucen\u00ed nebo nerovnom\u011brn\u00e9mu zat\u00ed\u017een\u00ed.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4. Proveden\u00ed testu<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">T\u00e1hn\u011bte vzorek, dokud nedojde k \u00fapln\u00e9mu protr\u017een\u00ed. Stroj zaznamen\u00e1v\u00e1 \u00fadaje o zat\u00ed\u017een\u00ed v \u010dase nebo zat\u00ed\u017een\u00ed v posunut\u00ed.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">5. Z\u00e1znam a v\u00fdpo\u010det dat<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Maxim\u00e1ln\u00ed zat\u00ed\u017een\u00ed p\u0159i roztr\u017een\u00ed zaznamenan\u00e9 do <strong data-start=\"4222\" data-end=\"4251\">t\u0159i v\u00fdznamn\u00e1 \u010d\u00edsla<\/strong><\/li>\n\n\n\n<li>Maxim\u00e1ln\u00ed prodlou\u017een\u00ed zaznamenan\u00e9 do <strong data-start=\"4289\" data-end=\"4316\">dv\u011b v\u00fdznamn\u00e1 \u010d\u00edsla<\/strong><\/li>\n\n\n\n<li>Pr\u016fm\u011br a sm\u011brodatn\u00e1 odchylka vypo\u010dten\u00e9 pro ka\u017edou orientaci filmu<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">V\u00fdb\u011br spr\u00e1vn\u00e9ho hrobov\u00e9ho testeru na slzy<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Pro z\u00edsk\u00e1n\u00ed stabiln\u00edch a p\u0159esn\u00fdch \u00fadaj\u016f o iniciaci trh\u00e1n\u00ed je nezbytn\u00e9 pou\u017e\u00edvat spr\u00e1vn\u00e9 vybaven\u00ed. Modern\u00ed zku\u0161ebn\u00ed stroj mus\u00ed poskytovat p\u0159esn\u00e9 m\u011b\u0159en\u00ed s\u00edly, stabiln\u00ed \u0159\u00edzen\u00ed pohonu, spr\u00e1vn\u00e9 nastaven\u00ed \u00fachopu a p\u0159izp\u016fsobiteln\u00e9 p\u0159\u00edpravky na vzorky.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pom\u00e1h\u00e1me laborato\u0159\u00edm tyto po\u017eadavky efektivn\u011b plnit, <strong data-start=\"4890\" data-end=\"4928\">Spole\u010dnost Cell Instruments nab\u00edz\u00ed model TST-01<\/strong>, v\u0161estrann\u00fd syst\u00e9m pro zkou\u0161en\u00ed tahu a trh\u00e1n\u00ed ur\u010den\u00fd pro anal\u00fdzu film\u016f s vysokou opakovatelnost\u00ed. TST-01 se vyzna\u010duje p\u0159esnou regulac\u00ed rychlosti, pevnou konstrukc\u00ed r\u00e1mu a specializovan\u00fdmi p\u0159\u00edpravky vhodn\u00fdmi pro <strong data-start=\"5128\" data-end=\"5156\">M\u011b\u0159en\u00ed Gravesovy slzy<\/strong>, co\u017e z n\u011bj \u010din\u00ed vynikaj\u00edc\u00ed volbu pro spole\u010dnosti, kter\u00e9 cht\u011bj\u00ed pln\u011b vyhov\u011bt norm\u011b ASTM D1004 a z\u00e1rove\u0148 zlep\u0161it pracovn\u00ed postupy testov\u00e1n\u00ed.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\n\t\t\t\tKontaktujte n\u00e1s Z\u00edskejte \u0159e\u0161en\u00ed pro testov\u00e1n\u00ed podle normy ASTM D1004\t\t\t\t<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Pro laborato\u0159e, kter\u00e9 hledaj\u00ed spolehliv\u00e9, opakovateln\u00e9 a efektivn\u00ed pln\u011bn\u00ed po\u017eadavk\u016f na <a href=\"https:\/\/www.astm.org\/d1004-21.html\" target=\"_blank\" rel=\"noopener nofollow\"><strong>ASTM D1004<\/strong><\/a>, pokro\u010dil\u00e1 \u0159e\u0161en\u00ed, jako nap\u0159. <strong data-start=\"6087\" data-end=\"6114\">Cell Instruments TST-01<\/strong> poskytuj\u00ed v\u00fdznamnou hodnotu a pom\u00e1haj\u00ed zajistit vysok\u00e9 standardy p\u0159i hodnocen\u00ed vlastnost\u00ed materi\u00e1l\u016f.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>","protected":false},"excerpt":{"rendered":"<p>ASTM D1004 &amp; Graves Tear &amp; Tear Resistance Test Graves Tear \u2014 What It Measures The Graves tear test evaluates the force required to initiate tearing in a notched specimen. Unlike other tear methods that measure propagation, this method focuses on the moment where tearing begins, providing insight into stress concentration response and material toughness. [&hellip;]<\/p>","protected":false},"featured_media":8068,"parent":0,"template":"","meta":{"_acf_changed":true,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}}},"standard-category":[611],"class_list":["post-9863","standard","type-standard","status-publish","has-post-thumbnail","hentry","standard-category-astm"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.packqc.com\/cs\/wp-json\/wp\/v2\/standard\/9863","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.packqc.com\/cs\/wp-json\/wp\/v2\/standard"}],"about":[{"href":"https:\/\/www.packqc.com\/cs\/wp-json\/wp\/v2\/types\/standard"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.packqc.com\/cs\/wp-json\/wp\/v2\/media\/8068"}],"wp:attachment":[{"href":"https:\/\/www.packqc.com\/cs\/wp-json\/wp\/v2\/media?parent=9863"}],"wp:term":[{"taxonomy":"standard-category","embeddable":true,"href":"https:\/\/www.packqc.com\/cs\/wp-json\/wp\/v2\/standard-category?post=9863"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}