{"id":7580,"date":"2025-11-19T17:09:02","date_gmt":"2025-11-19T09:09:02","guid":{"rendered":"https:\/\/www.qualitester.com\/?page_id=7580"},"modified":"2025-11-24T09:36:22","modified_gmt":"2025-11-24T01:36:22","slug":"astm-d1004","status":"publish","type":"page","link":"https:\/\/www.qualitester.com\/sk\/standards\/astm-d1004\/","title":{"rendered":"ASTM D1004"},"content":{"rendered":"<h1 style=\"text-align: center;\">ASTM D1004<br \/>\n<small>Gravesova sk\u00fa\u0161ka trhania plastov\u00fdch f\u00f3li\u00ed a listov<\/small><\/h1>\n<p data-start=\"492\" data-end=\"999\">Norma ASTM D1004 zohr\u00e1va rozhoduj\u00facu \u00falohu pri hodnoten\u00ed odolnosti proti roztrhnutiu <strong data-start=\"562\" data-end=\"591\">plastov\u00e9 f\u00f3lie a f\u00f3lie<\/strong>, \u010do pom\u00e1ha v\u00fdrobcom a pracovn\u00edkom kontroly kvality pochopi\u0165, ako sa materi\u00e1l spr\u00e1va pri inicia\u010dnom roztrhnut\u00ed. Ke\u010f\u017ee sa f\u00f3lie st\u00e1vaj\u00fa ten\u0161\u00edmi, funk\u010dnej\u0161\u00edmi a pou\u017e\u00edvaj\u00fa sa vo ve\u013ekom rozsahu <strong data-start=\"786\" data-end=\"846\">obaly, zdravotn\u00edcke pom\u00f4cky, lie\u010div\u00e1, elektronika<\/strong>a in\u00fdch priemyseln\u00fdch odvetviach sa presn\u00e9 hodnotenie pevnosti v roztrhnut\u00ed st\u00e1va nevyhnutn\u00fdm pre predpovedanie v\u00fdkonu a predch\u00e1dzanie poruch\u00e1m v re\u00e1lnych aplik\u00e1ci\u00e1ch.<\/p>\n<p data-start=\"1001\" data-end=\"1287\">T\u00e1to met\u00f3da sa zameriava na <strong data-start=\"1024\" data-end=\"1066\">sila potrebn\u00e1 na za\u010datie trhania<\/strong>, a nie sila potrebn\u00e1 na jeho \u0161\u00edrenie. Tento d\u00f4raz poskytuje cenn\u00e9 poznatky o trvanlivosti a spo\u013eahlivosti pru\u017en\u00fdch f\u00f3liov\u00fdch \u0161trukt\u00far, najm\u00e4 t\u00fdch, ktor\u00e9 sa pou\u017e\u00edvaj\u00fa v aplik\u00e1ci\u00e1ch s vysokou integritou obalov.<\/p>\n<hr data-start=\"1289\" data-end=\"1292\" \/>\n<h3 data-start=\"1294\" data-end=\"1341\">D\u00f4le\u017eitos\u0165 Gravesovej sk\u00fa\u0161ky na roztrhnutie pod\u013ea normy ASTM D1004<\/h3>\n<p data-start=\"1451\" data-end=\"1843\">Str\u00e1nka <strong data-start=\"1455\" data-end=\"1475\">Gravesov slzn\u00fd test<\/strong>pod\u013ea normy ASTM D1004, pou\u017e\u00edva geometriu vzorky so z\u00e1rezmi, ktor\u00e1 vytv\u00e1ra definovan\u00fa koncentr\u00e1ciu nap\u00e4tia. Ke\u010f sa materi\u00e1l pri za\u0165a\u017een\u00ed roztiahne, v tomto kritickom mieste sa za\u010dne trhanie. Str\u00e1nka <strong data-start=\"1667\" data-end=\"1698\">Gravesova sk\u00fa\u0161ka odolnosti proti roztrhnutiu<\/strong> umo\u017e\u0148uje pou\u017e\u00edvate\u013eom z\u00edska\u0165 vysoko porovnate\u013en\u00e9 \u00fadaje, preto\u017ee tvar vzorky, rozmery z\u00e1rezu, sk\u00fa\u0161obn\u00e1 r\u00fdchlos\u0165 a met\u00f3da uchopenia zost\u00e1vaj\u00fa \u0161tandardizovan\u00e9.<\/p>\n<p data-start=\"1845\" data-end=\"2258\">Pre odvetvia, ktor\u00e9 sa spoliehaj\u00fa na konzistentn\u00e9 <strong data-start=\"1882\" data-end=\"1922\">pevnos\u0165 plastov\u00fdch f\u00f3li\u00ed a listov pri roztrhnut\u00ed<\/strong>, t\u00e1to met\u00f3da m\u00e1 siln\u00fa predik\u010dn\u00fa schopnos\u0165. Obalov\u00e9 f\u00f3lie pou\u017e\u00edvan\u00e9 vo vreck\u00e1ch, lek\u00e1rskych vreck\u00e1ch, blistroch a ochrann\u00fdch lamin\u00e1toch sa \u010dasto stret\u00e1vaj\u00fa s lok\u00e1lnym nam\u00e1han\u00edm. Pochopenie toho, ako materi\u00e1l reaguje v okamihu, ke\u010f sa za\u010dne trha\u0165, pom\u00e1ha v\u00fdrobcom zlep\u0161i\u0165 zlo\u017eenie v\u00fdrobku, viacvrstvov\u00fa kon\u0161trukciu a riadenie procesov.<\/p>\n<hr data-start=\"2260\" data-end=\"2263\" \/>\n<h3 data-start=\"2265\" data-end=\"2329\">K\u013e\u00fa\u010dov\u00e9 princ\u00edpy merania odolnosti proti roztrhnutiu pod\u013ea normy ASTM D1004<\/h3>\n<p data-start=\"2331\" data-end=\"2626\">Norma ASTM D1004 definuje n\u00edzku mieru za\u0165a\u017eenia <strong data-start=\"2372\" data-end=\"2385\">51 mm\/min<\/strong>, \u010d\u00edm sa zabezpe\u010d\u00ed, \u017ee k roztrhnutiu d\u00f4jde pri kontrolovanom, pomalom nam\u00e1han\u00ed - \u010faleko pod typick\u00fdmi podmienkami pou\u017e\u00edvania. To umo\u017e\u0148uje laborat\u00f3ri\u00e1m izolova\u0165 chemick\u00e9 zlo\u017eenie, kry\u0161talinitu a \u0161truktur\u00e1lne vlastnosti materi\u00e1lu bez vplyvu dynamick\u00e9ho nam\u00e1hania.<\/p>\n<p data-start=\"2628\" data-end=\"2674\">Met\u00f3da sa riadi nieko\u013ek\u00fdmi d\u00f4le\u017eit\u00fdmi z\u00e1sadami:<\/p>\n<ul>\n<li data-start=\"2678\" data-end=\"2805\"><strong data-start=\"2678\" data-end=\"2719\">Presn\u00e9 meranie inicia\u010dnej sily<\/strong>: Maxim\u00e1lna sila, ktor\u00e1 sa vyskytuje na za\u010diatku trhania, ur\u010duje odolnos\u0165 proti roztrhnutiu.<\/li>\n<li data-start=\"2808\" data-end=\"2965\"><strong data-start=\"2808\" data-end=\"2845\">Pr\u00edsna kontrola hr\u00fabky vzorky<\/strong>: Odch\u00fdlky nad \u00b110% prin\u00e1\u0161aj\u00fa zav\u00e1dzaj\u00face v\u00fdsledky, preto\u017ee hr\u00fabka nekoreluje line\u00e1rne so spr\u00e1van\u00edm pri trhan\u00ed.<\/li>\n<li data-start=\"2968\" data-end=\"3080\"><strong data-start=\"2968\" data-end=\"3004\">Oddelenie s kon\u0161tantnou r\u00fdchlos\u0165ou uchopenia<\/strong> zabezpe\u010duje jednotn\u00e9 podmienky testovania v r\u00f4znych laborat\u00f3ri\u00e1ch a typoch pr\u00edstrojov.<\/li>\n<li data-start=\"3083\" data-end=\"3237\"><strong data-start=\"3083\" data-end=\"3108\">Vhodn\u00e9 materi\u00e1ly<\/strong>: Met\u00f3da najlep\u0161ie funguje pri filmoch, ktor\u00e9 sa nekrehkaj\u00fa a nepredl\u017euj\u00fa sa nadmerne nad pribli\u017ene 200%.<\/li>\n<\/ul>\n<p data-start=\"3239\" data-end=\"3365\">Tieto z\u00e1sady pom\u00e1haj\u00fa zabezpe\u010di\u0165, aby laborat\u00f3ri\u00e1 z\u00edskali spo\u013eahliv\u00e9 \u00fadaje o pevnosti v roztrhnut\u00ed pre v\u0161etky \u0161ar\u017ee, materi\u00e1ly a v\u00fdrobn\u00e9 procesy.<\/p>\n<hr data-start=\"3367\" data-end=\"3370\" \/>\n<h3 data-start=\"3372\" data-end=\"3404\">ASTM D1004 Princ\u00edp Gravesovho testovania roztrhnutia<\/h3>\n<p data-start=\"3406\" data-end=\"3772\">Postup sa za\u010d\u00edna pr\u00edpravou vzoriek v tvare \u010dinky s presn\u00fdm z\u00e1rezom na ka\u017edej strane. Po zmeran\u00ed hr\u00fabky v okol\u00ed z\u00e1rezu sa vzorka upevn\u00ed tak, aby sa zv\u00e4\u010d\u0161en\u00e9 konce vyrovnali s osou uchopenia. Stroj odde\u013euje \u00fachopy kon\u0161tantnou r\u00fdchlos\u0165ou a silov\u00e1 krivka identifikuje maxim\u00e1lne za\u0165a\u017eenie pred t\u00fdm, ako d\u00f4jde k v\u00fdrazn\u00e9mu roztrhnutiu.<\/p>\n<p data-start=\"3774\" data-end=\"3815\">Modern\u00e9 digit\u00e1lne testovacie stroje zaznamen\u00e1vaj\u00fa:<\/p>\n<ul>\n<li data-start=\"3818\" data-end=\"3854\">Maxim\u00e1lna odolnos\u0165 proti roztrhnutiu (N alebo lbf)<\/li>\n<li data-start=\"3857\" data-end=\"3881\">Maxim\u00e1lne pred\u013a\u017eenie (mm)<\/li>\n<li data-start=\"3884\" data-end=\"3925\">Charakteristiky krivky za\u0165a\u017eenia a posunutia<\/li>\n<li data-start=\"3928\" data-end=\"3988\">\u0160tatistick\u00e9 parametre, ako je priemer a \u0161tandardn\u00e1 odch\u00fdlka<\/li>\n<\/ul>\n<p data-start=\"3990\" data-end=\"4130\">Tieto \u00fadaje pom\u00e1haj\u00fa laborat\u00f3ri\u00e1m overova\u0165 konzistenciu materi\u00e1lov, hodnoti\u0165 kvalitu dod\u00e1vate\u013eov, vykon\u00e1va\u0165 porovnania v oblasti v\u00fdskumu a v\u00fdvoja a overova\u0165 dizajn obalov.<\/p>\n<hr data-start=\"4132\" data-end=\"4135\" \/>\n<h3 data-start=\"4137\" data-end=\"4191\">V\u00fdber vhodn\u00e9ho zariadenia na testovanie pod\u013ea normy ASTM D1004<\/h3>\n<p><a href=\"https:\/\/www.qualitester.com\/sk\/produkt-2\/tensile-tester-tst-01\/\"><img fetchpriority=\"high\" decoding=\"async\" class=\"alignleft wp-image-7581 size-medium\" src=\"https:\/\/www.qualitester.com\/wp-content\/uploads\/2025\/11\/ASTM-D1004-Graves-Tear-Test-of-Plastic-Films-and-Sheets-300x300.webp\" alt=\"ASTM D1004 Gravesova sk\u00fa\u0161ka trhania plastov\u00fdch f\u00f3li\u00ed a listov\" width=\"300\" height=\"300\" srcset=\"https:\/\/www.qualitester.com\/wp-content\/uploads\/2025\/11\/ASTM-D1004-Graves-Tear-Test-of-Plastic-Films-and-Sheets-300x300.webp 300w, https:\/\/www.qualitester.com\/wp-content\/uploads\/2025\/11\/ASTM-D1004-Graves-Tear-Test-of-Plastic-Films-and-Sheets-150x150.webp 150w, https:\/\/www.qualitester.com\/wp-content\/uploads\/2025\/11\/ASTM-D1004-Graves-Tear-Test-of-Plastic-Films-and-Sheets-12x12.webp 12w, https:\/\/www.qualitester.com\/wp-content\/uploads\/2025\/11\/ASTM-D1004-Graves-Tear-Test-of-Plastic-Films-and-Sheets-100x100.webp 100w, https:\/\/www.qualitester.com\/wp-content\/uploads\/2025\/11\/ASTM-D1004-Graves-Tear-Test-of-Plastic-Films-and-Sheets.webp 600w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p data-start=\"4193\" data-end=\"4393\">Spo\u013eahliv\u00fd v\u00fdkon pod\u013ea normy ASTM D1004 si vy\u017eaduje presn\u00fa kontrolu r\u00fdchlosti, nastavenia a merania za\u0165a\u017eenia. Vysoko presn\u00fd tester na odde\u013eovanie s kon\u0161tantnou r\u00fdchlos\u0165ou uchopenia zabezpe\u010duje opakovate\u013en\u00e9 v\u00fdsledky inici\u00e1cie sily.<\/p>\n<p data-start=\"4395\" data-end=\"4820\">Silnou vo\u013ebou pre laborat\u00f3ri\u00e1, ktor\u00e9 h\u013eadaj\u00fa spo\u013eahliv\u00e9 a efekt\u00edvne testovanie, je <strong data-start=\"4476\" data-end=\"4520\">Cell Instruments TST-01 <a href=\"https:\/\/www.qualitester.com\/sk\/produkt-2\/tensile-tester-tst-01\/\" target=\"_blank\" rel=\"noopener\">Tester \u0165ahu<\/a><\/strong>. Tento model podporuje pru\u017en\u00e9 plasty, f\u00f3lie a lamin\u00e1ty a z\u00e1rove\u0148 pon\u00faka stabiln\u00e9 ovl\u00e1danie uchopenia, programovate\u013en\u00e9 nastavenie r\u00fdchlosti a sn\u00edma\u010de za\u0165a\u017eenia s vysok\u00fdm rozl\u00ed\u0161en\u00edm. Jeho v\u0161estrannos\u0165 tie\u017e umo\u017e\u0148uje laborat\u00f3ri\u00e1m sp\u013a\u0148a\u0165 viacer\u00e9 normy nad r\u00e1mec testovania trhania, \u010d\u00edm podporuje \u0161ir\u0161ie pracovn\u00e9 postupy v oblasti kvality a v\u00fdskumu a v\u00fdvoja.<\/p>\n<p data-start=\"4822\" data-end=\"5000\">V\u00fdberom robustn\u00e9ho pr\u00edstroja sa nielen zlep\u0161\u00ed s\u00falad s normou ASTM D1004, ale aj zlep\u0161\u00ed <strong data-start=\"4910\" data-end=\"4930\">d\u00f4veryhodnos\u0165 \u00fadajov<\/strong>, minimalizuje chyby obsluhy a podporuje dlhodob\u00e9 zabezpe\u010denie kvality.<\/p>\n<hr data-start=\"5002\" data-end=\"5005\" \/>\n<h2 data-start=\"310\" data-end=\"349\"><strong data-start=\"313\" data-end=\"349\">\u010casto kladen\u00e9 ot\u00e1zky o Gravesovej sk\u00fa\u0161ke na roztrhnutie pod\u013ea normy ASTM D1004<\/strong><\/h2>\n<p data-start=\"351\" data-end=\"383\"><strong data-start=\"355\" data-end=\"381\">1. \u010co je ASTM D1004?<br \/>\n<\/strong><a href=\"https:\/\/www.astm.org\/d1004-21.html\" target=\"_blank\" rel=\"noopener nofollow\">ASTM D1004<\/a> je \u0161tandardizovan\u00e1 testovacia met\u00f3da pou\u017e\u00edvan\u00e1 na meranie <strong data-start=\"445\" data-end=\"475\">odolnos\u0165 proti inici\u00e1cii roztrhnutia<\/strong> pru\u017en\u00fdch plastov\u00fdch f\u00f3li\u00ed a f\u00f3li\u00ed s pou\u017eit\u00edm geometrie roztrhnutia pod\u013ea Gravesa. Vyhodnocuje maxim\u00e1lnu silu potrebn\u00fa na za\u010datie trhania pri kontrolovanom za\u0165a\u017een\u00ed n\u00edzkou r\u00fdchlos\u0165ou.<\/p>\n<p data-start=\"658\" data-end=\"700\"><strong data-start=\"662\" data-end=\"698\">2. \u010co je to Gravesov slzn\u00fd test?<br \/>\n<\/strong>Pri Gravesovej sk\u00fa\u0161ke roztrhnutia sa na vytvorenie bodu koncentr\u00e1cie nap\u00e4tia pou\u017e\u00edva vzorka v tvare \u010dinky so z\u00e1rezmi. Pri \u0165ahan\u00ed kon\u0161tantnou r\u00fdchlos\u0165ou sa sk\u00fa\u0161kou ur\u010duje <strong data-start=\"859\" data-end=\"903\">maxim\u00e1lna sila, pri ktorej doch\u00e1dza k roztrhnutiu<\/strong>, \u010do poskytuje preh\u013ead o trvanlivosti a h\u00fa\u017eevnatosti f\u00f3lie.<\/p>\n<p data-start=\"1666\" data-end=\"1729\"><strong data-start=\"1670\" data-end=\"1727\">3. Ako sa ASTM D1004 l\u00ed\u0161i od in\u00fdch testov na roztrhnutie?<br \/>\n<\/strong>Norma ASTM D1004 sa zameriava najm\u00e4 na <strong data-start=\"1765\" data-end=\"1784\">inici\u00e1cia slzenia<\/strong>, zatia\u013e \u010do testy ako ASTM D1922 meraj\u00fa <strong data-start=\"1825\" data-end=\"1845\">\u0161\u00edrenie slzy<\/strong>. V\u010faka tomu je D1004 obzvl\u00e1\u0161\u0165 cenn\u00fd pre materi\u00e1ly, pri ktor\u00fdch je schopnos\u0165 odol\u00e1va\u0165 za\u010diatku trhania d\u00f4le\u017eitej\u0161ia ako postup trhania.<\/p>\n<p data-start=\"1730\" data-end=\"1992\"><strong>4. Ak\u00e1 je po\u017eadovan\u00e1 sk\u00fa\u0161obn\u00e1 r\u00fdchlos\u0165 pod\u013ea normy ASTM D1004?<br \/>\n<\/strong>Rukov\u00e4te sa musia oddeli\u0165 na <strong data-start=\"2087\" data-end=\"2111\">51 mm\/min (2 in\/min)<\/strong>. Zachovanie tejto r\u00fdchlosti je nevyhnutn\u00e9 na z\u00edskanie presn\u00fdch a porovnate\u013en\u00fdch v\u00fdsledkov.<\/p>\n<p data-start=\"1730\" data-end=\"1992\"><strong>5. Ak\u00e9 zariadenie je vhodn\u00e9 na testovanie pod\u013ea normy ASTM D1004?<\/strong><br \/>\nVy\u017eaduje sa tester na odde\u013eovanie s kon\u0161tantnou r\u00fdchlos\u0165ou uchopenia s presnou regul\u00e1ciou r\u00fdchlosti a stabiln\u00fdm uchopen\u00edm. Pr\u00edstroje ako napr. <strong data-start=\"2925\" data-end=\"2969\">Univerz\u00e1lny tester Cell Instruments TST-01<\/strong> poskytuj\u00fa presn\u00e9 a opakovate\u013en\u00e9 v\u00fdsledky a podporuj\u00fa viacero met\u00f3d testovania filmov.<\/p>","protected":false},"excerpt":{"rendered":"<p>ASTM D1004 Gravesova sk\u00fa\u0161ka trhania plastov\u00fdch f\u00f3li\u00ed a f\u00f3li\u00ed ASTM D1004 zohr\u00e1va k\u013e\u00fa\u010dov\u00fa \u00falohu pri hodnoten\u00ed odolnosti plastov\u00fdch f\u00f3li\u00ed a f\u00f3li\u00ed proti roztrhnutiu a pom\u00e1ha v\u00fdrobcom a pracovn\u00edkom kontroly kvality pochopi\u0165, ako sa materi\u00e1l spr\u00e1va, ke\u010f je vystaven\u00fd inici\u00e1cii roztrhnutia. Ke\u010f\u017ee sa f\u00f3lie st\u00e1vaj\u00fa ten\u0161\u00edmi, funk\u010dnej\u0161\u00edmi a \u0161iroko pou\u017e\u00edvan\u00fdmi v oblasti balenia, medic\u00ednskych ...<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/www.qualitester.com\/sk\/standards\/astm-d1004\/\"> <span class=\"screen-reader-text\">ASTM D1004<\/span> \u010c\u00edtajte viac \"<\/a><\/p>","protected":false},"author":4,"featured_media":0,"parent":4948,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-global-header-display":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","footnotes":""},"class_list":["post-7580","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.qualitester.com\/sk\/wp-json\/wp\/v2\/pages\/7580","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.qualitester.com\/sk\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.qualitester.com\/sk\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.qualitester.com\/sk\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.qualitester.com\/sk\/wp-json\/wp\/v2\/comments?post=7580"}],"version-history":[{"count":0,"href":"https:\/\/www.qualitester.com\/sk\/wp-json\/wp\/v2\/pages\/7580\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/www.qualitester.com\/sk\/wp-json\/wp\/v2\/pages\/4948"}],"wp:attachment":[{"href":"https:\/\/www.qualitester.com\/sk\/wp-json\/wp\/v2\/media?parent=7580"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}