{"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":"2026-03-12T10:37:47","modified_gmt":"2026-03-12T02:37:47","slug":"astm-d4917","status":"publish","type":"standard","link":"https:\/\/www.packqc.com\/sl\/standard\/astm-d4917\/","title":{"rendered":"ASTM D4917"},"content":{"rendered":"<h2 class=\"wp-block-heading\">Razumevanje koeficienta trenja pri testiranju papirja<\/h2>\n\n\n\n<p><strong data-start=\"1472\" data-end=\"1505\">Koeficient trenja (COF)<\/strong> je klju\u010dni parameter, ki odra\u017ea upor pri gibanju med dvema povr\u0161inama. Pri uporabi papirja ta vrednost vpliva na to, kako en list drsi po drugem. . <strong data-start=\"1674\" data-end=\"1688\">stati\u010dni COF<\/strong> dolo\u010da silo, ki je potrebna za za\u010detek gibanja, medtem ko <strong data-start=\"1752\" data-end=\"1767\">kineti\u010dni COF<\/strong> meri silo, ki je potrebna za ohranjanje konstantne hitrosti gibanja. Standard ASTM D4917 omogo\u010da obe meritvi z vodoravnim drsnim gibanjem.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Razmisleki o testni opremi in pripravi vzorca<\/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=\"Test koeficienta trenja papirja v teku\" 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>Za izvedbo zanesljivih testov COF v skladu z ASTM D4917 je nujna specializirana oprema. A <strong data-start=\"3843\" data-end=\"3877\">preizku\u0161evalnik konstantne hitrosti gibanja<\/strong>, ki je opremljen z merilno celico in lahko vle\u010de sani s hitrostjo 150 \u00b1 30 mm\/min, se obi\u010dajno uporablja.<\/p>\n\n\n\n<p>Za natan\u010dne rezultate je treba vzorce predhodno pripraviti v standardnih atmosferskih pogojih (v skladu s TAPPI T402 ali ASTM D685) in jih pripraviti v skladu s smerjo stroja in orientacijo zrn.<\/p>\n\n\n\n<p>Priporo\u010damo, da <strong data-start=\"4191\" data-end=\"4249\">Cell Instruments COF-01 Tester koeficienta trenja<\/strong>, zelo natan\u010den instrument za vodoravno ravnino, zasnovan v skladu z zahtevami standarda ASTM D4917 in ISO 8295. Opremljen je z digitalnim krmiljenjem, nastavljivimi mo\u017enostmi sani in samodejnim merjenjem sile, kar zagotavlja natan\u010dne in ponovljive rezultate za stati\u010dne in kineti\u010dne teste COF.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Pojasnjeno stati\u010dno in kineti\u010dno testiranje trenja papirja<\/h2>\n\n\n\n<p>Testiranje papirja po standardu ASTM D4917 vklju\u010duje postavitev enega lista papirja na ravno vodoravno povr\u0161ino in postavitev drugega enakega lista na vrh. Na zgornji list se polo\u017eijo sani (obi\u010dajno z gumijasto povr\u0161ino). Ko se sani vle\u010dejo, se merita sila, potrebna za za\u010detek gibanja (stati\u010dno trenje), in sila, potrebna za nadaljevanje gibanja (kineti\u010dno trenje).<\/p>\n\n\n\n<p>to <strong data-start=\"2334\" data-end=\"2368\">testiranje kineti\u010dnega trenja papirja<\/strong> in <strong data-start=\"2373\" data-end=\"2406\">testiranje stati\u010dnega trenja papirja<\/strong> zagotavlja klju\u010dne podatke za razumevanje lo\u010devanja listov, doslednosti podajanja in poravnave tiskanja v sistemih visoke hitrosti.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Uporaba standarda ASTM D4917 pri testiranju COF tiskarskega in nepremazanega papirja<\/h2>\n\n\n\n<p>The <strong data-start=\"2613\" data-end=\"2640\">test COF tiskarskega papirja<\/strong> je \u0161e posebej pomembno v tiskarni\u0161kih okoljih, kjer doslednost trenja zagotavlja natan\u010dnost podajanja posameznega lista in zmanj\u0161uje \u0161tevilo zastojev ali napa\u010dnih podajanj. Podobno, <strong data-start=\"2799\" data-end=\"2826\">test COF za nepremazan papir<\/strong> pomaga proizvajalcem papirja pri preverjanju specifikacij izdelka pred pretvorbo ali dostavo.<\/p>\n\n\n\n<p>V obeh primerih standard ASTM D4917 ponuja standardiziran pristop, ki zmanj\u0161uje variabilnost testiranja in zagotavlja skladnost z industrijskimi merili kakovosti.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Zakaj uporabiti ASTM D4917 namesto drugih metod?<\/h2>\n\n\n\n<p>Za razliko od metod na nagnjeni ravnini (kot je ASTM D4918), ki ne morejo dolo\u010diti kineti\u010dnega COF, omogo\u010da ASTM D4917 natan\u010dno oceno stati\u010dnega in kineti\u010dnega trenja pri vodoravnem gibanju. Poleg tega zmanj\u0161uje drsno obrabo s testiranjem samo na prvem stiku, kar bolje simulira scenarije ravnanja s plo\u010devino v resni\u010dnem svetu.<\/p>\n\n\n\n<p>Za bolj toge materiale, kot je valoviti karton, je primernej\u0161i standard ASTM D4521 ali ASTM D3247. Vendar pa je za <strong data-start=\"3557\" data-end=\"3592\">tanek, pro\u017een, nepremazan papir<\/strong>, D4917 je metoda, ki jo priporo\u010da ve\u010dina predelovalcev papirja in laboratorijev za embala\u017eo.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Izbira pravega merilnika koeficienta trenja<\/h2>\n\n\n\n<p>Za izpolnjevanje zahtev standarda ASTM D4917 in doseganje natan\u010dnih rezultatov COF na papirju priporo\u010damo uporabo <strong data-start=\"4239\" data-end=\"4270\">Celi\u010dni instrumenti <a href=\"https:\/\/www.packqc.com\/sl\/product\/coefficient-of-friction-testing-equipment\/\">COF-01<\/a> Tester<\/strong>, ki je optimiziran za:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>horizontalno testiranje<\/li>\n\n\n\n<li>Meritve stati\u010dnega in kineti\u010dnega trenja<\/li>\n\n\n\n<li>Oblikovanje pritrdilnih elementov po meri za nepremazane in posebne papirje<\/li>\n\n\n\n<li>Pametno bele\u017eenje podatkov\u00a0<\/li>\n<\/ul>\n\n\n\n<p>Testerji trenja podjetja Cell Instruments, podprti z zanesljivo in\u017eenirsko in aplikativno podporo, zagotavljajo natan\u010dnost in ponovljivost pri razli\u010dnih papirnih podlagah.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Kontaktirajte nas Pridobite re\u0161itev za testiranje ASTM D4917 <\/h2>\n\n\n\n<p>Trenjske lastnosti papirnih materialov pomembno vplivajo na u\u010dinkovitost pri tiskanju, pakiranju in predelavi. <strong data-start=\"5267\" data-end=\"5281\">ASTM D4917<\/strong> zagotavlja standardiziran, zanesljiv okvir za merjenje stati\u010dnega in kineti\u010dnega trenja nepremazanega pisalnega in tiskarskega papirja. Z natan\u010dnimi instrumenti, kot je <strong data-start=\"5448\" data-end=\"5478\">COF-01 s strani <a href=\"https:\/\/www.packqc.com\/sl\/\">Celi\u010dni instrumenti<\/a><\/strong>, lahko strokovnjaki za kakovost samozavestno izvajajo teste, interpretirajo rezultate in izvajajo izbolj\u0161ave.<\/p>\n\n\n\n<p>Ne glede na to, ali testirate za <strong data-start=\"5608\" data-end=\"5634\">kineti\u010dno trenje papirja<\/strong>, <strong data-start=\"5636\" data-end=\"5655\">stati\u010dno trenje<\/strong>, <strong data-start=\"5657\" data-end=\"5679\">tiskarski papir COF<\/strong>, ali izvajanje <strong data-start=\"5698\" data-end=\"5725\">test COF za nepremazan papir<\/strong>, razumevanje in uporaba standarda ASTM D4917 zagotavlja, da so va\u0161i rezultati smiselni, ponovljivi in usklajeni s svetovnimi standardi.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">pogosta vpra\u0161anja<\/h2>\n\n\n\n<p><a tabindex=\"0\">1. Kaj meri standard ASTM D4917?<\/a><br>ASTM D4917 meri koeficient stati\u010dnega in kineti\u010dnega trenja nepremazanega pisalnega in tiskarskega papirja z metodo vodoravne ravnine.<\/p>\n\n\n\n<p><a tabindex=\"0\">2. Zakaj je testiranje trenja pomembno za izdelke iz papirja?<\/a><br>Trenje vpliva na zanesljivost podajanja v tiskalnikih in kopirnih strojih ter zagotavlja pravilno rokovanje v strojih za predelavo in pakiranje.<\/p>\n\n\n\n<p><a tabindex=\"0\">3. Kako se stati\u010dna COF razlikuje od kineti\u010dne COF?<\/a><br>Stati\u010dna COF meri silo za za\u010detek gibanja med dvema povr\u0161inama, medtem ko kineti\u010dna COF meri silo za nadaljevanje gibanja.<\/p>\n\n\n\n<p><a tabindex=\"0\">4. Lahko <\/a><a href=\"https:\/\/store.astm.org\/d4917-97r07e01.html\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">ASTM D4917<\/a><a tabindex=\"0\"> se uporablja za premazane ali posebne papirje?<\/a><br>\u010ceprav je optimiziran za nepremazane papirje za pisanje in tiskanje, se lahko standard ASTM D4917 uporablja tudi za druge vrste papirja, vendar se lahko rezultati razlikujejo po natan\u010dnosti.<\/p>","protected":false},"excerpt":{"rendered":"<p>Understanding Coefficient of Friction in Paper Testing Coefficient of friction (COF) is a crucial parameter that reflects the resistance to motion between two surfaces. In paper applications, this value influences how one sheet slides over another. The static COF determines the force required to start the movement, while the kinetic COF measures the force needed [&hellip;]<\/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":[],"class_list":["post-9845","standard","type-standard","status-publish","has-post-thumbnail","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.packqc.com\/sl\/wp-json\/wp\/v2\/standard\/9845","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.packqc.com\/sl\/wp-json\/wp\/v2\/standard"}],"about":[{"href":"https:\/\/www.packqc.com\/sl\/wp-json\/wp\/v2\/types\/standard"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.packqc.com\/sl\/wp-json\/wp\/v2\/media\/10018"}],"wp:attachment":[{"href":"https:\/\/www.packqc.com\/sl\/wp-json\/wp\/v2\/media?parent=9845"}],"wp:term":[{"taxonomy":"standard-category","embeddable":true,"href":"https:\/\/www.packqc.com\/sl\/wp-json\/wp\/v2\/standard-category?post=9845"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}