{"id":630,"date":"2026-02-26T06:14:56","date_gmt":"2026-02-26T06:14:56","guid":{"rendered":"https:\/\/www.teartester.com\/?post_type=standard&p=630"},"modified":"2026-02-28T08:22:03","modified_gmt":"2026-02-28T08:22:03","slug":"astm-d1004","status":"publish","type":"standard","link":"https:\/\/www.teartester.com\/cs\/standard\/astm-d1004\/","title":{"rendered":"ASTM D1004"},"content":{"rendered":"

Na str\u00e1nk\u00e1ch Graves\u016fv slzn\u00fd test<\/strong>-j\u00e1drov\u00e9 m\u011b\u0159en\u00ed podle normy ASTM D1004- je v pr\u016fmyslu \u0161iroce zn\u00e1m\u00e9 jako. test slzn\u00e9ho filmu<\/strong>, zejm\u00e9na p\u0159i posuzov\u00e1n\u00ed pevnost plastov\u00e9 f\u00f3lie v roztr\u017een\u00ed<\/strong> a prov\u00e1d\u011bn\u00ed zkou\u0161ka odolnosti proti roztr\u017een\u00ed<\/strong> pro hodnocen\u00ed kvality. A\u010dkoli se tyto term\u00edny li\u0161\u00ed, vztahuj\u00ed se ke stejn\u00e9 standardizovan\u00e9 metod\u011b.<\/p>\n\n\n\n

P\u0159i zkou\u0161ce se pou\u017e\u00edv\u00e1 rovnom\u011brn\u011b vroubkovan\u00fd vzorek s roz\u0161\u00ed\u0159en\u00fdmi konci. Z\u00e1\u0159ez vytv\u00e1\u0159\u00ed koncentraci nap\u011bt\u00ed, kter\u00e1 nut\u00ed k zah\u00e1jen\u00ed trh\u00e1n\u00ed v p\u0159edv\u00eddateln\u00e9m m\u00edst\u011b. Na rozd\u00edl od metod dynamick\u00e9ho r\u00e1zov\u00e9ho trh\u00e1n\u00ed se norma ASTM D1004 zam\u011b\u0159uje sp\u00ed\u0161e na iniciaci trh\u00e1n\u00ed p\u0159i n\u00edzk\u00e9 rychlosti ne\u017e na trh\u00e1n\u00ed s plnou propagac\u00ed. To umo\u017e\u0148uje in\u017een\u00fdr\u016fm vyhodnotit p\u0159irozenou odolnost f\u00f3li\u00ed v jejich ran\u00fdch f\u00e1z\u00edch poru\u0161en\u00ed.<\/p>\n\n\n\n

Vzhledem k tomu, \u017ee trh\u00e1n\u00ed v re\u00e1ln\u00e9m prost\u0159ed\u00ed \u010dasto za\u010d\u00edn\u00e1 mal\u00fdmi z\u00e1\u0159ezy nebo pr\u016frazy, poskytuje Gravesova metoda p\u0159ehled o tom, jak se materi\u00e1l chov\u00e1 v praktick\u00fdch provozn\u00edch podm\u00ednk\u00e1ch, nap\u0159\u00edklad p\u0159i otev\u00edr\u00e1n\u00ed obal\u016f, oh\u00fdb\u00e1n\u00ed p\u0159i p\u0159eprav\u011b nebo p\u0159i zpracov\u00e1n\u00ed f\u00f3lie.<\/p>\n\n\n\n

Jak funguje norma ASTM D1004: Kl\u00ed\u010dov\u00e9 principy zkou\u0161ky<\/h2>\n\n\n\n

Pro zaji\u0161t\u011bn\u00ed p\u0159esnosti a reprodukovatelnosti norma stanov\u00ed n\u011bkolik z\u00e1kladn\u00edch podm\u00ednek:<\/p>\n\n\n\n

\u0158\u00edzen\u00e1 rychlost nakl\u00e1d\u00e1n\u00ed<\/h3>\n\n\n\n

Rukojeti se od sebe vzdaluj\u00ed v 51 mm\/min<\/strong>, \u010d\u00edm\u017e vznik\u00e1 stabiln\u00ed k\u0159ivka zat\u00ed\u017een\u00ed v \u010dase. Tato pomal\u00e1 a konzistentn\u00ed rychlost zabra\u0148uje p\u0159et\u011b\u017eov\u00e1n\u00ed vzorku a udr\u017euje srovnateln\u00e9 v\u00fdsledky mezi laborato\u0159emi.<\/p>\n\n\n\n

Konzistentn\u00ed geometrie<\/h3>\n\n\n\n

Konstrukce se z\u00e1\u0159ezy zaji\u0161\u0165uje, \u017ee trh\u00e1n\u00ed za\u010d\u00edn\u00e1 tam, kde m\u00e1, a pom\u00e1h\u00e1 tak eliminovat chyby zp\u016fsoben\u00e9 n\u00e1hodn\u00fdmi inicia\u010dn\u00edmi body. Rovnom\u011brnost tlou\u0161\u0165ky v rozmez\u00ed \u00b110% je kritick\u00e1, jinak m\u016f\u017ee doj\u00edt k zav\u00e1d\u011bj\u00edc\u00edm hodnot\u00e1m odolnosti proti roztr\u017een\u00ed.<\/p>\n\n\n\n

M\u011b\u0159en\u00ed maxim\u00e1ln\u00edho zat\u00ed\u017een\u00ed<\/h3>\n\n\n\n

Odolnost proti roztr\u017een\u00ed se rovn\u00e1 maxim\u00e1ln\u00ed s\u00edla<\/strong> zaznamenan\u00e9 b\u011bhem iniciace, nikoliv b\u011bhem cel\u00e9 doby \u0161\u00ed\u0159en\u00ed. Toto rozli\u0161en\u00ed je z\u00e1sadn\u00ed, proto\u017ee prvn\u00ed vrchol \u010dasto vyjad\u0159uje pevnost materi\u00e1lu p\u0159esn\u011bji ne\u017e prodlou\u017een\u00e9 trh\u00e1n\u00ed.<\/p>\n\n\n\n

Vhodn\u00e9 typy materi\u00e1l\u016f<\/h3>\n\n\n\n

Norma ASTM D1004 se nejl\u00e9pe osv\u011bd\u010duje u f\u00f3li\u00ed, kter\u00e9 p\u0159i zkou\u0161k\u00e1ch nepraskaj\u00ed k\u0159ehk\u00fdm zp\u016fsobem a nep\u0159ekra\u010duj\u00ed prodlou\u017een\u00ed 200%. Extr\u00e9mn\u011b pru\u017en\u00e9 nebo k\u0159ehk\u00e9 materi\u00e1ly mohou vy\u017eadovat alternativn\u00ed metody trh\u00e1n\u00ed.<\/p>\n\n\n\n

Pro\u010d jsou \u00fadaje o odolnosti proti roztr\u017een\u00ed pro v\u00fdrobce d\u016fle\u017eit\u00e9?<\/h2>\n\n\n\n

Odolnost proti roztr\u017een\u00ed ovliv\u0148uje kritick\u00e9 aspekty v\u00fdkonu:<\/p>\n\n\n\n

    \n
  • Celistvost balen\u00ed<\/strong> p\u0159i p\u0159eprav\u011b, skladov\u00e1n\u00ed a manipulaci<\/li>\n\n\n\n
  • Snadn\u00e9 otev\u00edr\u00e1n\u00ed<\/strong> pro spot\u0159ebn\u00ed zbo\u017e\u00ed<\/li>\n\n\n\n
  • Odolnost<\/strong> l\u00e9ka\u0159sk\u00fdch a farmaceutick\u00fdch f\u00f3li\u00ed<\/li>\n\n\n\n
  • Spolehlivost<\/strong> lamin\u00e1t\u016f, geomembr\u00e1n a bari\u00e9rov\u00fdch desek.<\/li>\n\n\n\n
  • Konzistence<\/strong> ve v\u00fdrobn\u00edch d\u00e1vk\u00e1ch<\/li>\n<\/ul>\n\n\n\n

    P\u0159esn\u00e9 \u00fadaje o odolnosti proti roztr\u017een\u00ed pom\u00e1haj\u00ed konstrukt\u00e9r\u016fm odhalit odchylky prysky\u0159ice, v\u00fdrobn\u00ed vady a struktur\u00e1ln\u00ed nedostatky dlouho p\u0159edt\u00edm, ne\u017e se v\u00fdrobky dostanou ke koncov\u00fdm u\u017eivatel\u016fm.<\/p>\n\n\n\n

    Doporu\u010den\u00ed k vybaven\u00ed: Zlep\u0161en\u00ed p\u0159esnosti pomoc\u00ed Cell Instruments TST-01<\/h2>\n\n\n\n

    Pro dosa\u017een\u00ed stabiln\u00edch a opakovateln\u00fdch v\u00fdsledk\u016f je nezbytn\u00fd vysoce p\u0159esn\u00fd tester s konstantn\u00ed rychlost\u00ed odd\u011blov\u00e1n\u00ed. Na str\u00e1nk\u00e1ch Cell Instruments TST-01<\/strong> nab\u00edz\u00ed:<\/p>\n\n\n\n

      \n
    • Stabiln\u00ed konstrukce zat\u011b\u017eovac\u00ed bu\u0148ky pro p\u0159esn\u00e9 m\u011b\u0159en\u00ed \u0161pi\u010dkov\u00e9 s\u00edly<\/li>\n\n\n\n
    • Vysok\u00e1 p\u0159esnost ovl\u00e1d\u00e1n\u00ed rychlosti odd\u011blov\u00e1n\u00ed \u00fachopu<\/li>\n\n\n\n
    • P\u0159izp\u016fsobiteln\u00e9 \u00fachyty pro r\u016fzn\u00e9 f\u00f3lie a desky<\/li>\n\n\n\n
    • Sb\u011br dat, kter\u00fd zobrazuje k\u0159ivky zat\u00ed\u017een\u00ed v \u010dase a zat\u00ed\u017een\u00ed v posunu<\/li>\n\n\n\n
    • Vynikaj\u00edc\u00ed opakovatelnost vhodn\u00e1 pro kontrolu kvality v\u00fdroby a laboratorn\u00ed v\u00fdzkum<\/li>\n<\/ul>\n\n\n\n

      Jeho shoda s normami ASTM - v\u010detn\u011b normy ASTM D1004 - z n\u011bj \u010din\u00ed silnou volbu pro u\u017eivatele, kte\u0159\u00ed vy\u017eaduj\u00ed spolehliv\u00e9 \u00fadaje o odolnosti proti roztr\u017een\u00ed obalov\u00fdch, zdravotnick\u00fdch a pr\u016fmyslov\u00fdch f\u00f3li\u00ed.<\/p>\n\n\n\n

      Osv\u011bd\u010den\u00e9 postupy pro p\u0159esn\u00e9 testov\u00e1n\u00ed podle normy ASTM D1004<\/h2>\n\n\n\n

      Chcete-li zv\u00fd\u0161it spolehlivost testu, zva\u017ete n\u00e1sleduj\u00edc\u00ed pokyny:<\/p>\n\n\n\n

        \n
      • Vzorky stavu<\/strong> aby byla zaji\u0161t\u011bna stabiln\u00ed vlhkost a teplota.<\/li>\n\n\n\n
      • M\u011b\u0159en\u00ed tlou\u0161\u0165ky<\/strong> p\u0159esn\u011b v n\u011bkolika bodech kolem z\u00e1\u0159ezu.<\/li>\n\n\n\n
      • Vyrovn\u00e1n\u00ed vzorku<\/strong> aby se dlouh\u00e1 osa dokonale shodovala s osou rukojeti.<\/li>\n\n\n\n
      • Z\u00e1znam maxim\u00e1ln\u00edho zat\u00ed\u017een\u00ed p\u0159i roztr\u017een\u00ed<\/strong> s vysokorychlostn\u00edm sb\u011brem dat.<\/li>\n\n\n\n
      • Pou\u017eit\u00ed konzistentn\u00edch \u0159ezac\u00edch n\u00e1stroj\u016f<\/strong> aby se minimalizovaly odchylky geometrie.<\/li>\n<\/ul>\n\n\n\n

        Dodr\u017eov\u00e1n\u00edm spr\u00e1vn\u00fdch postup\u016f a pou\u017e\u00edv\u00e1n\u00edm kvalitn\u00edch p\u0159\u00edstroj\u016f mohou laborato\u0159e dos\u00e1hnout vysoce spolehliv\u00fdch v\u00fdsledk\u016f, kter\u00e9 odr\u00e1\u017eej\u00ed skute\u010dn\u00e9 vlastnosti materi\u00e1lu.<\/p>","protected":false},"featured_media":0,"parent":0,"template":"","meta":{"_acf_changed":false},"standard-category":[2],"class_list":["post-630","standard","type-standard","status-publish","hentry","standard-category-astm"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.teartester.com\/cs\/wp-json\/wp\/v2\/standard\/630","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.teartester.com\/cs\/wp-json\/wp\/v2\/standard"}],"about":[{"href":"https:\/\/www.teartester.com\/cs\/wp-json\/wp\/v2\/types\/standard"}],"wp:attachment":[{"href":"https:\/\/www.teartester.com\/cs\/wp-json\/wp\/v2\/media?parent=630"}],"wp:term":[{"taxonomy":"standard-category","embeddable":true,"href":"https:\/\/www.teartester.com\/cs\/wp-json\/wp\/v2\/standard-category?post=630"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}