{"id":9845,"date":"2026-02-24T15:11:45","date_gmt":"2026-02-24T07:11:45","guid":{"rendered":"https:\/\/www.packqc.com\/standard\/astm-d4917-2\/"},"modified":"2026-04-16T09:53:06","modified_gmt":"2026-04-16T01:53:06","slug":"astm-d4917","status":"publish","type":"standard","link":"https:\/\/www.packqc.com\/cs\/standard\/astm-d4917\/","title":{"rendered":"ASTM D4917"},"content":{"rendered":"<h2 class=\"wp-block-heading\">Pochopen\u00ed koeficientu t\u0159en\u00ed p\u0159i testov\u00e1n\u00ed pap\u00edru<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong data-start=\"1472\" data-end=\"1505\">Koeficient t\u0159en\u00ed (COF)<\/strong> je kl\u00ed\u010dov\u00fd parametr, kter\u00fd odr\u00e1\u017e\u00ed odpor pohybu mezi dv\u011bma povrchy. V aplikac\u00edch pap\u00edru tato hodnota ovliv\u0148uje, jak jeden list klou\u017ee po druh\u00e9m. . <strong data-start=\"1674\" data-end=\"1688\">statick\u00e9 COF<\/strong> ur\u010duje s\u00edlu pot\u0159ebnou k zah\u00e1jen\u00ed pohybu, zat\u00edmco hodnota <strong data-start=\"1752\" data-end=\"1767\">kinetick\u00e9 COF<\/strong> m\u011b\u0159\u00ed s\u00edlu pot\u0159ebnou k udr\u017een\u00ed konstantn\u00ed rychlosti pohybu. Norma ASTM D4917 umo\u017e\u0148uje ob\u011b m\u011b\u0159en\u00ed pomoc\u00ed horizont\u00e1ln\u00edho posuvn\u00e9ho pohybu.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Testovac\u00ed za\u0159\u00edzen\u00ed a p\u0159\u00edprava vzork\u016f<\/h2>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<div class=\"ast-oembed-container\" style=\"height: 100%;\"><iframe title=\"Prob\u00edhaj\u00edc\u00ed zkou\u0161ka sou\u010dinitele t\u0159en\u00ed pap\u00edru\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/Iq-UFiGqF64?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/div>\n<\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Pro proveden\u00ed spolehliv\u00fdch zkou\u0161ek COF podle normy ASTM D4917 je nezbytn\u00e9 specializovan\u00e9 vybaven\u00ed. A <strong data-start=\"3843\" data-end=\"3877\">tester konstantn\u00ed rychlosti pohybu<\/strong>, vybaven\u00fd sn\u00edma\u010dem zat\u00ed\u017een\u00ed a schopn\u00fd t\u00e1hnout s\u00e1\u0148ky rychlost\u00ed 150 \u00b1 30 mm\/min, se obvykle pou\u017e\u00edv\u00e1.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pro p\u0159esn\u00e9 v\u00fdsledky by m\u011bly b\u00fdt vzorky p\u0159edem p\u0159ipraveny za standardn\u00edch atmosf\u00e9rick\u00fdch podm\u00ednek (podle TAPPI T402 nebo ASTM D685) a p\u0159ipraveny v souladu se sm\u011brem stroje a orientac\u00ed zrn.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Doporu\u010dujeme <strong data-start=\"4191\" data-end=\"4249\">Cell Instruments COF-01 Tester sou\u010dinitele t\u0159en\u00ed<\/strong>, vysoce p\u0159esn\u00fd horizont\u00e1ln\u00ed rovinn\u00fd p\u0159\u00edstroj navr\u017een\u00fd tak, aby spl\u0148oval po\u017eadavky norem ASTM D4917 a ISO 8295. Je vybaven digit\u00e1ln\u00edm ovl\u00e1d\u00e1n\u00edm, nastaviteln\u00fdmi mo\u017enostmi san\u00ed a automatick\u00fdm m\u011b\u0159en\u00edm s\u00edly - co\u017e zaji\u0161\u0165uje p\u0159esn\u00e9 a reprodukovateln\u00e9 v\u00fdsledky statick\u00fdch i kinetick\u00fdch test\u016f COF.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Vysv\u011btlen\u00ed statick\u00e9ho a kinetick\u00e9ho t\u0159en\u00ed pap\u00edru<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Testov\u00e1n\u00ed pap\u00edru podle normy ASTM D4917 zahrnuje polo\u017een\u00ed jednoho listu pap\u00edru na rovn\u00fd vodorovn\u00fd povrch a polo\u017een\u00ed druh\u00e9ho stejn\u00e9ho listu na n\u011bj. Na horn\u00ed list se polo\u017e\u00ed s\u00e1\u0148ky (obvykle s gumov\u00fdm povrchem). P\u0159i tah\u00e1n\u00ed s\u00e1n\u011bk se m\u011b\u0159\u00ed s\u00edla pot\u0159ebn\u00e1 k zah\u00e1jen\u00ed pohybu (statick\u00e9 t\u0159en\u00ed) a s\u00edla pot\u0159ebn\u00e1 k pokra\u010dov\u00e1n\u00ed pohybu (kinetick\u00e9 t\u0159en\u00ed).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tento <strong data-start=\"2334\" data-end=\"2368\">testov\u00e1n\u00ed kinetick\u00e9ho t\u0159en\u00ed pap\u00edru<\/strong> a <strong data-start=\"2373\" data-end=\"2406\">statick\u00e9 zkou\u0161ky t\u0159en\u00ed pap\u00edru<\/strong> poskytuje d\u016fle\u017eit\u00e9 \u00fadaje pro pochopen\u00ed odd\u011blov\u00e1n\u00ed arch\u016f, konzistence pod\u00e1v\u00e1n\u00ed a zarovn\u00e1n\u00ed tisku ve vysokorychlostn\u00edch syst\u00e9mech.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Aplikace normy ASTM D4917 p\u0159i zkou\u0161en\u00ed COF u tiskov\u00e9ho a nenat\u00edran\u00e9ho pap\u00edru<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The <strong data-start=\"2613\" data-end=\"2640\">test COF tiskov\u00e9ho pap\u00edru<\/strong> je d\u016fle\u017eit\u00fd zejm\u00e9na v prost\u0159ed\u00ed tiska\u0159sk\u00fdch stroj\u016f, kde t\u0159en\u00ed zaji\u0161\u0165uje p\u0159esnost pod\u00e1v\u00e1n\u00ed jednotliv\u00fdch list\u016f a omezuje zasek\u00e1v\u00e1n\u00ed nebo chybn\u00e9 pod\u00e1v\u00e1n\u00ed. Podobn\u011b, <strong data-start=\"2799\" data-end=\"2826\">test COF na nenat\u00edran\u00e9m pap\u00edru<\/strong> pom\u00e1h\u00e1 v\u00fdrobc\u016fm pap\u00edru ov\u011b\u0159it specifikace v\u00fdrobku p\u0159ed jeho zpracov\u00e1n\u00edm nebo dod\u00e1n\u00edm.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V obou p\u0159\u00edpadech nab\u00edz\u00ed norma ASTM D4917 standardizovan\u00fd p\u0159\u00edstup, kter\u00fd sni\u017euje variabilitu testov\u00e1n\u00ed a zaji\u0161\u0165uje shodu s pr\u016fmyslov\u00fdmi m\u011b\u0159\u00edtky kvality.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Pro\u010d pou\u017e\u00edvat metodu ASTM D4917 m\u00edsto jin\u00fdch metod?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Na rozd\u00edl od metod naklon\u011bn\u00e9 roviny (nap\u0159. ASTM D4918), kter\u00e9 nemohou ur\u010dit kinetick\u00e9 t\u0159en\u00ed COF, umo\u017e\u0148uje norma ASTM D4917 p\u0159esn\u00e9 vyhodnocen\u00ed statick\u00e9ho i kinetick\u00e9ho t\u0159en\u00ed p\u0159i horizont\u00e1ln\u00edm pohybu. Nav\u00edc minimalizuje opot\u0159eben\u00ed p\u0159i klouz\u00e1n\u00ed t\u00edm, \u017ee testuje pouze prvn\u00ed kontakt, co\u017e l\u00e9pe simuluje re\u00e1ln\u00e9 sc\u00e9n\u00e1\u0159e manipulace s plechy.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pro pevn\u011bj\u0161\u00ed materi\u00e1ly, jako je vlnit\u00e1 lepenka, je vhodn\u011bj\u0161\u00ed norma ASTM D4521 nebo ASTM D3247. Ale pro <strong data-start=\"3557\" data-end=\"3592\">tenk\u00e9, pru\u017en\u00e9, nenat\u00edran\u00e9 pap\u00edry<\/strong>, D4917 je metodou doporu\u010dovanou v\u011bt\u0161inou zpracovatel\u016f pap\u00edru a balic\u00edch laborato\u0159\u00ed.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">V\u00fdb\u011br spr\u00e1vn\u00e9ho testeru sou\u010dinitele t\u0159en\u00ed<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Abyste splnili po\u017eadavky normy ASTM D4917 a dos\u00e1hli p\u0159esn\u00fdch v\u00fdsledk\u016f COF na pap\u00ed\u0159e, doporu\u010dujeme pou\u017e\u00edt <strong data-start=\"4239\" data-end=\"4270\">Bun\u011b\u010dn\u00e9 n\u00e1stroje <a href=\"https:\/\/www.packqc.com\/cs\/product\/coefficient-of-friction-testing-equipment\/\">COF-01<\/a> Tester<\/strong>, kter\u00fd je optimalizov\u00e1n pro:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>horizont\u00e1ln\u00ed testov\u00e1n\u00ed<\/li>\n\n\n\n<li>M\u011b\u0159en\u00ed statick\u00e9ho a kinetick\u00e9ho t\u0159en\u00ed<\/li>\n\n\n\n<li>Zak\u00e1zkov\u00e1 konstrukce p\u0159\u00edpravk\u016f pro nenat\u00edran\u00e9 a speci\u00e1ln\u00ed pap\u00edry<\/li>\n\n\n\n<li>Chytr\u00e9 zaznamen\u00e1v\u00e1n\u00ed dat\u00a0<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Zkou\u0161e\u010dky t\u0159en\u00ed Cell Instruments, podporovan\u00e9 robustn\u00ed technickou a aplika\u010dn\u00ed podporou, zaji\u0161\u0165uj\u00ed p\u0159esnost a opakovatelnost na r\u016fzn\u00fdch pap\u00edrov\u00fdch substr\u00e1tech.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Kontaktujte n\u00e1s Z\u00edskejte \u0159e\u0161en\u00ed pro testov\u00e1n\u00ed podle normy ASTM D4917 <\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">T\u0159ec\u00ed vlastnosti pap\u00edrov\u00fdch materi\u00e1l\u016f v\u00fdznamn\u011b ovliv\u0148uj\u00ed v\u00fdkon v tiska\u0159sk\u00fdch, balic\u00edch a zpracovatelsk\u00fdch operac\u00edch. <strong data-start=\"5267\" data-end=\"5281\">ASTM D4917<\/strong> poskytuje standardizovan\u00fd a spolehliv\u00fd r\u00e1mec pro m\u011b\u0159en\u00ed statick\u00e9ho i kinetick\u00e9ho t\u0159en\u00ed nenat\u00edran\u00e9ho psac\u00edho a tiskov\u00e9ho pap\u00edru. S p\u0159esn\u00fdmi p\u0159\u00edstroji, jako je nap\u0159. <strong data-start=\"5448\" data-end=\"5478\">COF-01 od <a href=\"https:\/\/www.packqc.com\/cs\/\">Bun\u011b\u010dn\u00e9 n\u00e1stroje<\/a><\/strong>, mohou odborn\u00edci na kvalitu s jistotou prov\u00e1d\u011bt testy, interpretovat v\u00fdsledky a zav\u00e1d\u011bt zlep\u0161en\u00ed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A\u0165 u\u017e testujete <strong data-start=\"5608\" data-end=\"5634\">kinetick\u00e9 t\u0159en\u00ed pap\u00edru<\/strong>, <strong data-start=\"5636\" data-end=\"5655\">statick\u00e9 t\u0159en\u00ed<\/strong>, <strong data-start=\"5657\" data-end=\"5679\">tiskov\u00fd pap\u00edr COF<\/strong>nebo prov\u00e1d\u011bn\u00ed <strong data-start=\"5698\" data-end=\"5725\">test COF na nenat\u00edran\u00e9m pap\u00edru<\/strong>, pochopen\u00ed a pou\u017eit\u00ed normy ASTM D4917 zajist\u00ed, \u017ee va\u0161e v\u00fdsledky budou smyslupln\u00e9, reprodukovateln\u00e9 a v souladu s celosv\u011btov\u00fdmi normami.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Nej\u010dast\u011bj\u0161\u00ed dotazy<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><a tabindex=\"0\">1. Co m\u011b\u0159\u00ed norma ASTM D4917?<\/a><br>Norma ASTM D4917 m\u011b\u0159\u00ed koeficient statick\u00e9ho a kinetick\u00e9ho t\u0159en\u00ed nenat\u00edran\u00e9ho psac\u00edho a tiska\u0159sk\u00e9ho pap\u00edru metodou horizont\u00e1ln\u00ed roviny.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a tabindex=\"0\">2. Pro\u010d je u v\u00fdrobk\u016f z pap\u00edru d\u016fle\u017eit\u00e9 testov\u00e1n\u00ed t\u0159en\u00ed?<\/a><br>T\u0159en\u00ed ovliv\u0148uje spolehlivost pod\u00e1v\u00e1n\u00ed v tisk\u00e1rn\u00e1ch a kop\u00edrk\u00e1ch a zaji\u0161\u0165uje spr\u00e1vnou manipulaci ve zpracovatelsk\u00fdch a balic\u00edch stroj\u00edch.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a tabindex=\"0\">3. Jak se li\u0161\u00ed statick\u00e1 COF od kinetick\u00e9 COF?<\/a><br>Statick\u00e1 COF m\u011b\u0159\u00ed s\u00edlu pro zah\u00e1jen\u00ed pohybu mezi dv\u011bma povrchy, zat\u00edmco kinetick\u00e1 COF m\u011b\u0159\u00ed s\u00edlu pro pokra\u010dov\u00e1n\u00ed tohoto pohybu.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a tabindex=\"0\">4. M\u016f\u017ee <\/a><a href=\"https:\/\/store.astm.org\/d4917-97r07e01.html\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">ASTM D4917<\/a><a tabindex=\"0\"> pro nat\u00edran\u00e9 nebo speci\u00e1ln\u00ed pap\u00edry?<\/a><br>A\u010dkoli je optimalizov\u00e1na pro nenat\u00edran\u00e9 psac\u00ed a tiskov\u00e9 pap\u00edry, lze normu ASTM D4917 pou\u017e\u00edt i pro jin\u00e9 typy pap\u00edru, i kdy\u017e se v\u00fdsledky mohou li\u0161it v p\u0159esnosti.<\/p>","protected":false},"excerpt":{"rendered":"<p>Porozum\u011bn\u00ed koeficientu t\u0159en\u00ed p\u0159i testov\u00e1n\u00ed pap\u00edru Koeficient t\u0159en\u00ed (COF) je kl\u00ed\u010dov\u00fd parametr, kter\u00fd vyjad\u0159uje odpor proti pohybu mezi dv\u011bma povrchy. V pap\u00edrensk\u00e9m pr\u016fmyslu tato hodnota ovliv\u0148uje to, jak jeden list klou\u017ee po druh\u00e9m. Statick\u00fd koeficient t\u0159en\u00ed ur\u010duje s\u00edlu pot\u0159ebnou k zah\u00e1jen\u00ed pohybu, zat\u00edmco kinetick\u00fd koeficient t\u0159en\u00ed m\u011b\u0159\u00ed s\u00edlu pot\u0159ebnou [\u2026]<\/p>","protected":false},"featured_media":10018,"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-9845","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\/9845","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\/10018"}],"wp:attachment":[{"href":"https:\/\/www.packqc.com\/cs\/wp-json\/wp\/v2\/media?parent=9845"}],"wp:term":[{"taxonomy":"standard-category","embeddable":true,"href":"https:\/\/www.packqc.com\/cs\/wp-json\/wp\/v2\/standard-category?post=9845"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}