{"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\/lv\/standard\/astm-d4917\/","title":{"rendered":"ASTM D4917"},"content":{"rendered":"<h2 class=\"wp-block-heading\">Izpratne par berzes koeficientu pap\u012bra test\u0113\u0161an\u0101<\/h2>\n\n\n\n<p><strong data-start=\"1472\" data-end=\"1505\">Berzes koeficients (COF)<\/strong> ir b\u016btisks parametrs, kas atspogu\u013co kust\u012bbas pretest\u012bbu starp div\u0101m virsm\u0101m. Izmantojot pap\u012bru, \u0161\u012b v\u0113rt\u012bba ietekm\u0113 to, k\u0101 viena loksne sl\u012bd p\u0101ri otrai. . <strong data-start=\"1674\" data-end=\"1688\">statisks COF<\/strong> nosaka sp\u0113ku, kas nepiecie\u0161ams kust\u012bbas uzs\u0101k\u0161anai, bet <strong data-start=\"1752\" data-end=\"1767\">kin\u0113tiskais COF<\/strong> m\u0113ra sp\u0113ku, kas nepiecie\u0161ams, lai uztur\u0113tu kust\u012bbu ar nemain\u012bgu \u0101trumu. ASTM D4917 \u013cauj veikt abus m\u0113r\u012bjumus, izmantojot horizont\u0101lu sl\u012bdo\u0161o kust\u012bbu.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Test\u0113\u0161anas apr\u012bkojums un paraugu sagatavo\u0161anas apsv\u0113rumi<\/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=\"Pap\u012bra berzes koeficienta tests notiek\" 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>Lai veiktu uzticamus COF testus saska\u0146\u0101 ar ASTM D4917, ir nepiecie\u0161ams specializ\u0113ts apr\u012bkojums. A <strong data-start=\"3843\" data-end=\"3877\">past\u0101v\u012bga kust\u012bbas \u0101truma testeris<\/strong>, kas apr\u012bkots ar slodzes dev\u0113ju un sp\u0113j vilkt kamanas ar \u0101trumu 150 \u00b1 30 mm\/min, parasti tiek izmantots.<\/p>\n\n\n\n<p>Lai ieg\u016btu prec\u012bzus rezult\u0101tus, paraugi iepriek\u0161 j\u0101kondicion\u0113 standarta atmosf\u0113ras apst\u0101k\u013cos (saska\u0146\u0101 ar TAPPI T402 vai ASTM D685) un j\u0101sagatavo atbilsto\u0161i ma\u0161\u012bnas virzienam un graudu orient\u0101cijai.<\/p>\n\n\n\n<p>M\u0113s iesak\u0101m <strong data-start=\"4191\" data-end=\"4249\">Cell Instruments COF-01 berzes koeficienta testeris<\/strong>, augstas precizit\u0101tes horizont\u0101l\u0101s plaknes instruments, kas izstr\u0101d\u0101ts atbilsto\u0161i ASTM D4917 un ISO 8295 pras\u012bb\u0101m. Tam ir digit\u0101l\u0101 vad\u012bba, regul\u0113jamas s\u0101na iesp\u0113jas un automatiz\u0113ta sp\u0113ka m\u0113r\u012b\u0161ana, kas nodro\u0161ina prec\u012bzus un reproduc\u0113jamus rezult\u0101tus gan statiskajiem, gan kin\u0113tiskajiem COF testiem.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Pap\u012bra statisk\u0101s un kin\u0113tisk\u0101s berzes test\u0113\u0161anas skaidrojums<\/h2>\n\n\n\n<p>Test\u0113jot pap\u012bru saska\u0146\u0101 ar ASTM D4917 standartu, vienu pap\u012bra loksni novieto uz l\u012bdzenas horizont\u0101las virsmas un virs t\u0101s novieto otru identisku loksni. Virs aug\u0161\u0113j\u0101s loksnes tiek novietotas ragavas (parasti ar gumijas virsmu). Velkot ragavas, m\u0113ra sp\u0113ku, kas nepiecie\u0161ams kust\u012bbas uzs\u0101k\u0161anai (statisk\u0101 berze), un sp\u0113ku, kas nepiecie\u0161ams kust\u012bbas turpin\u0101\u0161anai (kin\u0113tisk\u0101 berze).<\/p>\n\n\n\n<p>\u0160is <strong data-start=\"2334\" data-end=\"2368\">pap\u012bra kin\u0113tisk\u0101s berzes test\u0113\u0161ana<\/strong> un <strong data-start=\"2373\" data-end=\"2406\">pap\u012bra statisk\u0101s berzes test\u0113\u0161ana<\/strong> sniedz svar\u012bgus datus, lai izprastu lapu atdal\u012b\u0161anu, padeves konsekvenci un drukas izl\u012bdzin\u0101\u0161anu \u0101trgaitas sist\u0113m\u0101s.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">ASTM D4917 pielietojums iespieddarbu un nep\u0101rkl\u0101ta pap\u012bra COF test\u0113\u0161an\u0101<\/h2>\n\n\n\n<p>The <strong data-start=\"2613\" data-end=\"2640\">drukas pap\u012bra COF tests<\/strong> ir \u012bpa\u0161i svar\u012bgi preses telp\u0101, kur berzes viendab\u012bgums nodro\u0161ina vienas lapas padeves precizit\u0101ti un samazina aiz\u0137er\u0161anos vai nepareizu padevi. L\u012bdz\u012bgi, <strong data-start=\"2799\" data-end=\"2826\">nep\u0101rkl\u0101ta pap\u012bra COF tests<\/strong> pal\u012bdz pap\u012bra ra\u017eot\u0101jiem p\u0101rbaud\u012bt produkta specifik\u0101cijas pirms p\u0101rveido\u0161anas vai pieg\u0101des.<\/p>\n\n\n\n<p>ASTM D4917 abos gad\u012bjumos pied\u0101v\u0101 standartiz\u0113tu pieeju, kas samazina test\u0113\u0161anas main\u012bgumu un nodro\u0161ina atbilst\u012bbu nozares kvalit\u0101tes standartiem.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">K\u0101p\u0113c izmantot ASTM D4917, nevis citas metodes?<\/h2>\n\n\n\n<p>At\u0161\u0137ir\u012bb\u0101 no sl\u012bp\u0101s plaknes metod\u0113m (piem\u0113ram, ASTM D4918), ar kur\u0101m nevar noteikt kin\u0113tisko COF, ASTM D4917 \u013cauj prec\u012bzi nov\u0113rt\u0113t gan statisko, gan kin\u0113tisko berzi, veicot horizont\u0101lu kust\u012bbu. Turkl\u0101t t\u0101 samazina sl\u012bdo\u0161o nodilumu, test\u0113jot tikai pirmo kontaktu, kas lab\u0101k imit\u0113 re\u0101los lok\u0161\u0146u apstr\u0101des scen\u0101rijus.<\/p>\n\n\n\n<p>Ciet\u0101kiem materi\u0101liem, piem\u0113ram, gofr\u0113tajam kartonam, piem\u0113rot\u0101ka ir ASTM D4521 vai ASTM D3247. Bet <strong data-start=\"3557\" data-end=\"3592\">pl\u0101ns, elast\u012bgs, nep\u0101rkl\u0101ts pap\u012brs<\/strong>, D4917 ir metode, ko iesaka liel\u0101k\u0101 da\u013ca pap\u012bra p\u0101rstr\u0101d\u0101t\u0101ju un iepako\u0161anas laboratoriju.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Pareiz\u0101 berzes koeficienta testera izv\u0113le<\/h2>\n\n\n\n<p>Lai nodro\u0161in\u0101tu atbilst\u012bbu ASTM D4917 standartam un ieg\u016btu prec\u012bzus pap\u012bra COF rezult\u0101tus, m\u0113s iesak\u0101m izmantot <strong data-start=\"4239\" data-end=\"4270\">\u0160\u016bnu instrumenti <a href=\"https:\/\/www.packqc.com\/lv\/product\/coefficient-of-friction-testing-equipment\/\">COF-01<\/a> Testeris<\/strong>, kas ir optimiz\u0113ts:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>horizont\u0101l\u0101 test\u0113\u0161ana<\/li>\n\n\n\n<li>Statisk\u0101s un kin\u0113tisk\u0101s berzes m\u0113r\u012bjumi<\/li>\n\n\n\n<li>Piel\u0101gota armat\u016bras konstrukcija nep\u0101rkl\u0101tiem un speci\u0101liem pap\u012briem<\/li>\n\n\n\n<li>Vied\u0101 datu ierakst\u012b\u0161ana\u00a0<\/li>\n<\/ul>\n\n\n\n<p>Cell Instruments\u2019 berzes testeri, ko atbalsta sp\u0113c\u012bgs in\u017eeniertehniskais un pielietojuma atbalsts, nodro\u0161ina precizit\u0101ti un atk\u0101rtojam\u012bbu da\u017e\u0101diem pap\u012bra substr\u0101tiem.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Sazinieties ar mums Ieg\u016bstiet ASTM D4917 test\u0113\u0161anas risin\u0101jumu <\/h2>\n\n\n\n<p>Pap\u012bra materi\u0101lu berzes \u012bpa\u0161\u012bbas b\u016btiski ietekm\u0113 drukas, iepako\u0161anas un p\u0101rstr\u0101des darb\u012bbu veiktsp\u0113ju. <strong data-start=\"5267\" data-end=\"5281\">ASTM D4917<\/strong> nodro\u0161ina standartiz\u0113tu, uzticamu sist\u0113mu, lai izm\u0113r\u012btu gan rakst\u0101mpap\u012bra, gan iespiedpap\u012bra bez p\u0101rkl\u0101juma statisko un kin\u0113tisko berzi. Ar prec\u012bziem m\u0113rinstrumentiem, piem. <strong data-start=\"5448\" data-end=\"5478\">COF-01 ar <a href=\"https:\/\/www.packqc.com\/lv\/\">\u0160\u016bnu instrumenti<\/a><\/strong>, kvalit\u0101tes speci\u0101listi var dro\u0161i veikt testus, interpret\u0113t rezult\u0101tus un ieviest uzlabojumus.<\/p>\n\n\n\n<p>Neatkar\u012bgi no t\u0101, vai test\u0113jat <strong data-start=\"5608\" data-end=\"5634\">pap\u012bra kin\u0113tisk\u0101 berze<\/strong>, <strong data-start=\"5636\" data-end=\"5655\">statisk\u0101 berze<\/strong>, <strong data-start=\"5657\" data-end=\"5679\">drukas pap\u012brs COF<\/strong>, vai veicot <strong data-start=\"5698\" data-end=\"5725\">nep\u0101rkl\u0101ta pap\u012bra COF tests<\/strong>, ASTM D4917 izpratne un piem\u0113ro\u0161ana nodro\u0161ina, ka j\u016bsu rezult\u0101ti ir noz\u012bm\u012bgi, reproduc\u0113jami un saska\u0146oti ar pasaules standartiem.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">FAQ<\/h2>\n\n\n\n<p><a tabindex=\"0\">1. Ko m\u0113ra ar ASTM D4917?<\/a><br>ASTM D4917 nosaka nep\u0101rkl\u0101ta rakst\u0101mpap\u012bra un iespiedpap\u012bra statisk\u0101s un kin\u0113tisk\u0101s berzes koeficientu, izmantojot horizont\u0101l\u0101s plaknes metodi.<\/p>\n\n\n\n<p><a tabindex=\"0\">2. K\u0101p\u0113c pap\u012bra izstr\u0101d\u0101jumiem ir svar\u012bgi veikt berzes testus?<\/a><br>Berze ietekm\u0113 padeves uzticam\u012bbu printeros un kop\u0113\u0161anas iek\u0101rt\u0101s, k\u0101 ar\u012b nodro\u0161ina pareizu apstr\u0101di p\u0101rstr\u0101des un iepako\u0161anas iek\u0101rt\u0101s.<\/p>\n\n\n\n<p><a tabindex=\"0\">3. K\u0101 statisk\u0101 COF at\u0161\u0137iras no kin\u0113tisk\u0101s COF?<\/a><br>Statisk\u0101 COF m\u0113ra sp\u0113ku, kas iedarbina kust\u012bbu starp div\u0101m virsm\u0101m, savuk\u0101rt kin\u0113tisk\u0101 COF m\u0113ra sp\u0113ku, kas turpina kust\u012bbu.<\/p>\n\n\n\n<p><a tabindex=\"0\">4. Var <\/a><a href=\"https:\/\/store.astm.org\/d4917-97r07e01.html\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">ASTM D4917<\/a><a tabindex=\"0\"> izmantot p\u0101rkl\u0101ta vai speci\u0101la pap\u012bra ra\u017eo\u0161anai?<\/a><br>Lai gan tas ir optimiz\u0113ts rakst\u0101mpap\u012bram bez p\u0101rkl\u0101juma un iespiedpap\u012bram, ASTM D4917 var izmantot ar\u012b citiem pap\u012bra veidiem, lai gan rezult\u0101ti var at\u0161\u0137irties precizit\u0101tes zi\u0146\u0101.<\/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\/lv\/wp-json\/wp\/v2\/standard\/9845","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.packqc.com\/lv\/wp-json\/wp\/v2\/standard"}],"about":[{"href":"https:\/\/www.packqc.com\/lv\/wp-json\/wp\/v2\/types\/standard"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.packqc.com\/lv\/wp-json\/wp\/v2\/media\/10018"}],"wp:attachment":[{"href":"https:\/\/www.packqc.com\/lv\/wp-json\/wp\/v2\/media?parent=9845"}],"wp:term":[{"taxonomy":"standard-category","embeddable":true,"href":"https:\/\/www.packqc.com\/lv\/wp-json\/wp\/v2\/standard-category?post=9845"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}