{"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\/et\/standard\/astm-d4917\/","title":{"rendered":"ASTM D4917"},"content":{"rendered":"<h2 class=\"wp-block-heading\">H\u00f5\u00f5rdeteguri m\u00f5istmine paberi katsetamisel<\/h2>\n\n\n\n<p><strong data-start=\"1472\" data-end=\"1505\">H\u00f5\u00f5rdetegur (COF)<\/strong> on oluline parameeter, mis peegeldab kahe pinna vahelise liikumise takistust. Paberirakendustes m\u00f5jutab see v\u00e4\u00e4rtus seda, kuidas \u00fcks leht libiseb \u00fcle teise. . <strong data-start=\"1674\" data-end=\"1688\">staatiline COF<\/strong> m\u00e4\u00e4rab liikumise alustamiseks vajaliku j\u00f5u, samas kui <strong data-start=\"1752\" data-end=\"1767\">kineetiline COF<\/strong> m\u00f5\u00f5dab j\u00f5udu, mis on vajalik liikumise s\u00e4ilitamiseks konstantsel kiirusel. ASTM D4917 v\u00f5imaldab m\u00f5lemat m\u00f5\u00f5tmist, kasutades horisontaalset libisevat liikumist.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Katseseadmed ja proovi ettevalmistamise kaalutlused<\/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=\"Paberi h\u00f5\u00f5rdeteguri katse on k\u00e4imas\" 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>Usaldusv\u00e4\u00e4rsete COF-katsete l\u00e4biviimiseks vastavalt ASTM D4917 standardile on vaja spetsiaalseid seadmeid. A <strong data-start=\"3843\" data-end=\"3877\">konstantse liikumiskiiruse tester<\/strong>, mis on varustatud koormusanduriga ja suudab t\u00f5mmata kelku kiirusega 150 \u00b1 30 mm\/min.<\/p>\n\n\n\n<p>T\u00e4psete tulemuste saamiseks tuleb proovid eelkonditsioneerida standardsetes atmosf\u00e4\u00e4ritingimustes (vastavalt TAPPI T402 v\u00f5i ASTM D685) ja valmistada ette masina suuna ja terade orientatsiooni j\u00e4rgi.<\/p>\n\n\n\n<p>Soovitame <strong data-start=\"4191\" data-end=\"4249\">Cell Instruments COF-01 h\u00f5\u00f5rdeteguri tester<\/strong>, suure t\u00e4psusega horisontaalne tasapinnaline m\u00f5\u00f5teriist, mis on kavandatud vastavalt ASTM D4917 ja ISO 8295 n\u00f5uetele. Seadmel on digitaalne juhtimine, reguleeritavad kelguvariandid ja automaatne j\u00f5u m\u00f5\u00f5tmine, mis tagab t\u00e4psed ja korratavad tulemused nii staatiliste kui ka kineetiliste COF-katsete puhul.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Paberi staatilise ja kineetilise h\u00f5\u00f5rdumise testimine Selgitused<\/h2>\n\n\n\n<p>ASTM D4917 kohane paberi katsetamine h\u00f5lmab \u00fche paberilehe asetamist tasasele horisontaalsele pinnale ja teise identse lehe asetamist selle peale. \u00dclemisele lehele asetatakse kelk (tavaliselt kummist pinnaga). Kelku t\u00f5mmates m\u00f5\u00f5detakse liikumise alustamiseks vajalik j\u00f5ud (staatiline h\u00f5\u00f5rdumine) ja liikumise j\u00e4tkamiseks vajalik j\u00f5ud (kineetiline h\u00f5\u00f5rdumine).<\/p>\n\n\n\n<p>See <strong data-start=\"2334\" data-end=\"2368\">paberi kineetilise h\u00f5\u00f5rdumise testimine<\/strong> ja <strong data-start=\"2373\" data-end=\"2406\">paberi staatilise h\u00f5\u00f5rdumise testimine<\/strong> pakub kriitilisi andmeid, et m\u00f5ista lehe eraldamist, s\u00f6\u00f6tmise j\u00e4rjepidevust ja printimise joondamist kiiretes s\u00fcsteemides.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">ASTM D4917 rakendused tr\u00fckkimise ja katmata paberi COF-testimisel<\/h2>\n\n\n\n<p>The <strong data-start=\"2613\" data-end=\"2640\">tr\u00fckipaberi COF test<\/strong> on eriti oluline tr\u00fckisaali keskkondades, kus h\u00f5\u00f5rdumise j\u00e4rjepidevus tagab \u00fche lehe esitamise t\u00e4psuse ja v\u00e4hendab ummistusi v\u00f5i vales\u00f6\u00f6tmist. Samamoodi, <strong data-start=\"2799\" data-end=\"2826\">katmata paberi COF-katse<\/strong> aitab paberitootjatel kontrollida toote spetsifikatsioone enne t\u00f6\u00f6tlemist v\u00f5i tarnimist.<\/p>\n\n\n\n<p>M\u00f5lemas rakenduses pakub ASTM D4917 standardiseeritud l\u00e4henemist, mis v\u00e4hendab katsetamise varieeruvust ja tagab vastavuse t\u00f6\u00f6stusharu kvaliteedin\u00e4itajatele.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Miks kasutada teiste meetodite asemel ASTM D4917?<\/h2>\n\n\n\n<p>Erinevalt kallutatud tasapinna meetoditest (nagu ASTM D4918), mis ei v\u00f5imalda m\u00e4\u00e4rata kineetilist COF-i, v\u00f5imaldab ASTM D4917 t\u00e4pset hinnangut nii staatilise kui ka kineetilise h\u00f5\u00f5rdumise kohta horisontaalse liikumise kaudu. Lisaks sellele minimeerib see libisevuse kulumist, kuna katsetatakse ainult esimest kokkupuudet, mis simuleerib paremini tegelikke lehtede k\u00e4itlemise stsenaariume.<\/p>\n\n\n\n<p>J\u00e4igemate materjalide, n\u00e4iteks lainepapi puhul on sobivam ASTM D4521 v\u00f5i ASTM D3247. Kuid kui tegemist on <strong data-start=\"3557\" data-end=\"3592\">\u00f5hukesed, paindlikud, katmata paberid<\/strong>, D4917 on parim meetod, mida enamik paberi t\u00f6\u00f6tlejaid ja pakendamislaboratooriume soovitab.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u00d5ige h\u00f5\u00f5rdeteguri testija valimine<\/h2>\n\n\n\n<p>ASTM D4917 n\u00f5uetele vastavaks ja t\u00e4psete paberi COF tulemuste saavutamiseks soovitame kasutada <strong data-start=\"4239\" data-end=\"4270\">Rakuinstrumendid <a href=\"https:\/\/www.packqc.com\/et\/product\/coefficient-of-friction-testing-equipment\/\">COF-01<\/a> Tester<\/strong>, mis on optimeeritud:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>horisontaalne testimine<\/li>\n\n\n\n<li>Staatilise ja kineetilise h\u00f5\u00f5rdumise m\u00f5\u00f5tmised<\/li>\n\n\n\n<li>Kohandatud kinnituse disain katmata ja eripaberite jaoks<\/li>\n\n\n\n<li>Nutikas andmete salvestamine\u00a0<\/li>\n<\/ul>\n\n\n\n<p>Cell Instruments' h\u00f5\u00f5rdetestid, mida toetab tugev tehniline ja rakendustugi, tagavad t\u00e4psuse ja korratavuse erinevate pabersubstraatide puhul.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">V\u00f5tke meiega \u00fchendust Hankige ASTM D4917 testimislahendus <\/h2>\n\n\n\n<p>Paberimaterjalide h\u00f5\u00f5rdeomadused m\u00f5jutavad oluliselt j\u00f5udlust tr\u00fckkimis-, pakendamis- ja t\u00f6\u00f6tlemistoimingute puhul. <strong data-start=\"5267\" data-end=\"5281\">ASTM D4917<\/strong> pakub standardiseeritud ja usaldusv\u00e4\u00e4rset raamistikku nii katmata kirjutus- ja tr\u00fckipaberi staatilise kui ka kineetilise h\u00f5\u00f5rdumise m\u00f5\u00f5tmiseks. T\u00e4pse m\u00f5\u00f5teriistaga nagu <strong data-start=\"5448\" data-end=\"5478\">COF-01, mille on koostanud <a href=\"https:\/\/www.packqc.com\/et\/\">Rakuinstrumendid<\/a><\/strong>, saavad kvaliteedispetsialistid kindlalt teste l\u00e4bi viia, tulemusi t\u00f5lgendada ja t\u00e4iustusi rakendada.<\/p>\n\n\n\n<p>\u00dcksk\u00f5ik, kas te testite <strong data-start=\"5608\" data-end=\"5634\">paberi kineetiline h\u00f5\u00f5rdumine<\/strong>, <strong data-start=\"5636\" data-end=\"5655\">staatiline h\u00f5\u00f5rdumine<\/strong>, <strong data-start=\"5657\" data-end=\"5679\">tr\u00fckipaber COF<\/strong>, v\u00f5i teostades <strong data-start=\"5698\" data-end=\"5725\">katmata paberi COF-katse<\/strong>ASTM D4917 m\u00f5istmine ja rakendamine tagab, et teie tulemused on sisukad, korratavad ja koosk\u00f5las \u00fclemaailmsete standarditega.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">KKK-d<\/h2>\n\n\n\n<p><a tabindex=\"0\">1. Mida m\u00f5\u00f5dab ASTM D4917?<\/a><br>ASTM D4917 m\u00f5\u00f5dab katmata kirjutus- ja tr\u00fckipaberi staatilist ja kineetilist h\u00f5\u00f5rdetegurit, kasutades horisontaalse tasapinna meetodit.<\/p>\n\n\n\n<p><a tabindex=\"0\">2. Miks on pabertoodete puhul h\u00f5\u00f5rdumise kontrollimine oluline?<\/a><br>H\u00f5\u00f5rdumine m\u00f5jutab printerite ja koopiamasinate s\u00f6\u00f6tmise usaldusv\u00e4\u00e4rsust ning tagab n\u00f5uetekohase k\u00e4itlemise t\u00f6\u00f6tlus- ja pakkimismasinates.<\/p>\n\n\n\n<p><a tabindex=\"0\">3. Kuidas erineb staatiline COF kineetilisest COFist?<\/a><br>Staatiline COF m\u00f5\u00f5dab kahe pinna vahelise liikumise alustamiseks vajalikku j\u00f5udu, samas kui kineetiline COF m\u00f5\u00f5dab selle liikumise j\u00e4tkamiseks vajalikku j\u00f5udu.<\/p>\n\n\n\n<p><a tabindex=\"0\">4. Saab <\/a><a href=\"https:\/\/store.astm.org\/d4917-97r07e01.html\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">ASTM D4917<\/a><a tabindex=\"0\"> kasutatakse kaetud v\u00f5i eripaberite puhul?<\/a><br>Kuigi see on optimeeritud katmata kirjutus- ja tr\u00fckipaberite jaoks, v\u00f5ib ASTM D4917 kasutada ka muude paberit\u00fc\u00fcpide puhul, kuigi tulemused v\u00f5ivad olla erineva t\u00e4psusega.<\/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\/et\/wp-json\/wp\/v2\/standard\/9845","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.packqc.com\/et\/wp-json\/wp\/v2\/standard"}],"about":[{"href":"https:\/\/www.packqc.com\/et\/wp-json\/wp\/v2\/types\/standard"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.packqc.com\/et\/wp-json\/wp\/v2\/media\/10018"}],"wp:attachment":[{"href":"https:\/\/www.packqc.com\/et\/wp-json\/wp\/v2\/media?parent=9845"}],"wp:term":[{"taxonomy":"standard-category","embeddable":true,"href":"https:\/\/www.packqc.com\/et\/wp-json\/wp\/v2\/standard-category?post=9845"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}