{"id":561,"date":"2025-07-03T02:03:31","date_gmt":"2025-07-03T02:03:31","guid":{"rendered":"https:\/\/www.coefficientfriction.com\/?p=561"},"modified":"2025-07-04T01:20:17","modified_gmt":"2025-07-04T01:20:17","slug":"astm-d4918-static-friction-test","status":"publish","type":"post","link":"https:\/\/www.coefficientfriction.com\/et\/astm-d4918-static-friction-test","title":{"rendered":"ASTM D4918 alusel tehtud staatilise h\u00f5\u00f5rdumise katse juhend"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"561\" class=\"elementor elementor-561\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-bd29f83 e-flex e-con-boxed e-con e-parent\" data-id=\"bd29f83\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1b206fa elementor-widget elementor-widget-heading\" data-id=\"1b206fa\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">Staatilise h\u00f5\u00f5rdumise katse ja ASTM D4918<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-4d9c25a e-flex e-con-boxed e-con e-parent\" data-id=\"4d9c25a\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-00bf54d elementor-widget__width-inherit elementor-widget elementor-widget-text-editor\" data-id=\"00bf54d\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"351\" data-end=\"855\">M\u00f5istmine <strong data-start=\"369\" data-end=\"393\">staatilise h\u00f5\u00f5rdumise katse<\/strong> on oluline kvaliteedikontrolli, pakendamise, paberi testimise ja sellega seotud t\u00f6\u00f6stusharude spetsialistide jaoks. Vastavalt <strong data-start=\"515\" data-end=\"529\">ASTM D4918<\/strong>Selles meetodis on m\u00e4\u00e4ratletud, kuidas m\u00e4\u00e4rata paberi ja pappmaterjalide staatilist h\u00f5\u00f5rdetegurit, kasutades selleks kaldtasapinda. See katse on eriti oluline pakendirakenduste puhul, kus papi v\u00f5i karbi pindade vaheline libisemistakistus v\u00f5ib oluliselt m\u00f5jutada virnastamist, transporti ja k\u00e4itlemise t\u00f5husust.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-fb1009b e-flex e-con-boxed e-con e-parent\" data-id=\"fb1009b\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-53cd760 elementor-widget elementor-widget-heading\" data-id=\"53cd760\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Staatilise h\u00f5\u00f5rdumise testimise t\u00e4htsus pakendirakendustes<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-ce48346 e-flex e-con-boxed e-con e-parent\" data-id=\"ce48346\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ff77a67 elementor-widget elementor-widget-text-editor\" data-id=\"ff77a67\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"930\" data-end=\"1306\">Paberipindade vaheline h\u00f5\u00f5rdumine m\u00f5jutab materjali j\u00f5udlust automatiseeritud pakkimisel, veostabiilsust ja virnastamise ohutust. Veebileht <strong data-start=\"1067\" data-end=\"1107\">staatiline h\u00f5\u00f5rdetegur (COF)<\/strong> viitab j\u00f5ule, mis on vajalik kahe pinna vahelise libisemise algatamiseks, erinevalt kineetilisest COFist, mis on seotud j\u00e4tkuva liikumisega. . <strong data-start=\"1244\" data-end=\"1268\">staatilise h\u00f5\u00f5rdumise katse<\/strong> keskendub sellele <em data-start=\"1285\" data-end=\"1305\">esialgne vastupanu<\/em>.<\/p><p data-start=\"1308\" data-end=\"1639\"><strong data-start=\"1308\" data-end=\"1322\">ASTM D4918<\/strong> on m\u00f5eldud eelk\u00f5ige <strong data-start=\"1349\" data-end=\"1389\">pinnakatteta kirjutus- ja tr\u00fckipaberid<\/strong>, kuid seda saab kasutada ka muude kvaliteediklasside, n\u00e4iteks laine- ja t\u00e4ispuitplaatide puhul, kui neid n\u00f5uetekohaselt kohandada nende ainulaadsete omadustega. See on eriti kasulik pakendimaterjalide k\u00e4itlemisomaduste m\u00e4\u00e4ramisel enne toote laadimist.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-f20f20f e-flex e-con-boxed e-con e-parent\" data-id=\"f20f20f\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e776f66 elementor-widget elementor-widget-heading\" data-id=\"e776f66\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Karpide COF-katse ja karpide materjalide h\u00f5\u00f5rdetegur<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-7345d2d e-flex e-con-boxed e-con e-parent\" data-id=\"7345d2d\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b08d779 elementor-widget elementor-widget-text-editor\" data-id=\"b08d779\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"1711\" data-end=\"2069\">Pakendussektoris on arusaamine <strong data-start=\"1754\" data-end=\"1773\">kartongi COF test<\/strong> on eluliselt t\u00e4htis. Selle katsega hinnatakse, kui suur on h\u00f5\u00f5rdumine kastide pindade vahel, mis m\u00f5jutab otseselt virnastatavust ja kaubaaluse stabiilsust. K\u00f5rge <strong data-start=\"1920\" data-end=\"1954\">kasti h\u00f5\u00f5rdetegur<\/strong> materjal tagab, et kastid ei libise veo ajal, samas kui madal COF toetab lihtsat vabastamist automatiseeritud pakkimise ajal.<\/p><p data-start=\"2071\" data-end=\"2379\">Kasutades <a href=\"https:\/\/store.astm.org\/d4918-97r07.html\" target=\"_blank\" rel=\"noopener\"><strong data-start=\"2077\" data-end=\"2091\">ASTM D4918<\/strong><\/a>kallutatud tasapinna meetod simuleerib tegelikke tingimusi, v\u00f5imaldades tootjatel tuvastada, kas paberil v\u00f5i karbis olev materjal pakub piisavat h\u00f5\u00f5rdetakistust. Katse k\u00e4igus registreeritakse esialgne libisemisnurk, et arvutada <strong data-start=\"2332\" data-end=\"2346\">staatiline COF<\/strong> kasutades selle nurga tangenti.<\/p><p data-start=\"2071\" data-end=\"2379\">Ettev\u00f5tetele, kes toodavad v\u00f5i kasutavad paberkarpe, tagab usaldusv\u00e4\u00e4rne COF-v\u00e4\u00e4rtus t\u00f6\u00f6ohutuse ja \u00f5igusnormidele vastavuse.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-8aba3a6 e-flex e-con-boxed e-con e-parent\" data-id=\"8aba3a6\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6179b7e elementor-widget elementor-widget-heading\" data-id=\"6179b7e\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Kuidas viia l\u00e4bi staatilise h\u00f5\u00f5rdumise katse ASTM D4918 abil<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a7c17bb e-flex e-con-boxed e-con e-parent\" data-id=\"a7c17bb\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-98f3925 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"98f3925\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>\u00a0<\/p><p>\u00a0<\/p><p>\u00a0<\/p><p>Siin on \u00fcldine \u00fclevaade <strong data-start=\"2605\" data-end=\"2629\">staatilise h\u00f5\u00f5rdumise katse<\/strong> protsess vastavalt ASTM D4918 suunistele:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e3e3781 elementor-widget elementor-widget-video\" data-id=\"e3e3781\" data-element_type=\"widget\" data-settings=\"{&quot;youtube_url&quot;:&quot;https:\\\/\\\/www.youtube.com\\\/watch?v=WhCQu7dJkI8&quot;,&quot;video_type&quot;:&quot;youtube&quot;,&quot;controls&quot;:&quot;yes&quot;}\" data-widget_type=\"video.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-wrapper elementor-open-inline\">\n\t\t\t<div class=\"elementor-video\"><\/div>\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-bbc87ee e-flex e-con-boxed e-con e-parent\" data-id=\"bbc87ee\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-03d6e88 elementor-widget elementor-widget-heading\" data-id=\"03d6e88\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">1. Katseseadmed<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-e2de683 e-flex e-con-boxed e-con e-parent\" data-id=\"e2de683\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a492111 elementor-widget elementor-widget-text-editor\" data-id=\"a492111\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Kasutage h\u00f5\u00f5rdetesti koos <strong data-start=\"2728\" data-end=\"2756\">kallutatud tasapinna mehhanism<\/strong>, nagu n\u00e4iteks <strong data-start=\"2770\" data-end=\"2797\"><a href=\"https:\/\/www.coefficientfriction.com\/et\/\">Cell Instruments<\/a> COF-03<\/strong>, mis vastab ASTM D4918 n\u00f5uetele. See on m\u00f5eldud paberi ja pakkematerjalide t\u00e4psete COF-v\u00e4\u00e4rtuste m\u00e4\u00e4ramiseks.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-f8c46b2 e-flex e-con-boxed e-con e-parent\" data-id=\"f8c46b2\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-817c116 elementor-widget elementor-widget-heading\" data-id=\"817c116\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">2. Proovi ettevalmistamine<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-ab92f9c e-flex e-con-boxed e-con e-parent\" data-id=\"ab92f9c\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4e8c8a9 elementor-widget elementor-widget-text-editor\" data-id=\"4e8c8a9\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li data-start=\"2949\" data-end=\"2994\">L\u00f5igake proovilehest kaks katsekeha.<\/li><li data-start=\"2997\" data-end=\"3084\">Veenduge, et m\u00f5lemad t\u00fckid on lamedad, ilma kortsudeta ja standardse m\u00f5\u00f5tmetolerantsi piires.<\/li><li data-start=\"3087\" data-end=\"3163\">Konditsioneerige proovid standardiseeritud atmosf\u00e4\u00e4ris (tavaliselt 23 \u00b0C, 50% RH).<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-63cf402 e-flex e-con-boxed e-con e-parent\" data-id=\"63cf402\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b8be051 elementor-widget elementor-widget-heading\" data-id=\"b8be051\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">3. Katsemenetlus<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-117ac1f e-flex e-con-boxed e-con e-parent\" data-id=\"117ac1f\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8a7456d elementor-widget elementor-widget-text-editor\" data-id=\"8a7456d\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li data-start=\"3193\" data-end=\"3276\">Asetage \u00fcks n\u00e4idis kaldtasapinnale (fikseeritud) ja teine n\u00e4idis \u00fclesse (liikuv kelgu).<\/li><li data-start=\"3279\" data-end=\"3340\">Kallutage tasapinda aeglaselt, kuni \u00fclemine n\u00e4idis hakkab libisema.<\/li><li data-start=\"3343\" data-end=\"3387\">M\u00e4rkige nurk, mille all liikumine algab.<\/li><li data-start=\"3390\" data-end=\"3448\">The <strong data-start=\"3394\" data-end=\"3428\">staatiline h\u00f5\u00f5rdetegur<\/strong> arvutatakse j\u00e4rgmiselt:<\/li><li><span class=\"katex-display\"><span class=\"katex\"><span class=\"katex-mathml\">\u03bcs=tan(\u03b8)\\mu_s = \\tan(\\theta)<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\"><span class=\"mord mathnormal\">\u03bc<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\">s<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mop\">tan<\/span><span class=\"mopen\">(<\/span><span class=\"mord mathnormal\">\u03b8<\/span><span class=\"mclose\">)<\/span><\/span><\/span><\/span><\/span><\/li><li data-start=\"3486\" data-end=\"3534\">kus <span class=\"katex\"><span class=\"katex-mathml\">\u03b8\\theta<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord mathnormal\">\u03b8<\/span><\/span><\/span><\/span> on algne libisemisnurk.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-62ec983 e-flex e-con-boxed e-con e-parent\" data-id=\"62ec983\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-9c5c413 elementor-widget elementor-widget-heading\" data-id=\"9c5c413\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">4. Tulemuste t\u00f5lgendamine<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-2c7d41a e-flex e-con-boxed e-con e-parent\" data-id=\"2c7d41a\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a138184 elementor-widget elementor-widget-text-editor\" data-id=\"a138184\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"3569\" data-end=\"3735\">V\u00f5rrelge m\u00f5\u00f5detud v\u00e4\u00e4rtusi oma toote toimivusn\u00f5uetega. K\u00f5rge COF on soovitav stabiilsuse tagamiseks virnastamisel, samas kui madal COF toetab automatiseerimisprotsesse.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-94536be e-flex e-con-boxed e-con e-parent\" data-id=\"94536be\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a095661 elementor-widget elementor-widget-heading\" data-id=\"a095661\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Miks valida Cell Instruments COF-03 tester?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-5284a6c e-flex e-con-boxed e-con e-parent\" data-id=\"5284a6c\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f569e84 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"f569e84\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"3793\" data-end=\"3973\">Laboritele ja pakendiettev\u00f5tetele, kes soovivad rakendada t\u00e4pset COF anal\u00fc\u00fcsi, soovitame kasutada <strong data-start=\"3895\" data-end=\"3959\">Cell Instruments h\u00f5\u00f5rdeteguri tester Mudel <a href=\"https:\/\/www.coefficientfriction.com\/et\/inclined-plane-coefficient-of-friction-tester\/\">COF-03<\/a><\/strong>. See seade:<\/p><ul><li data-start=\"3977\" data-end=\"4024\">Vastab <strong data-start=\"3991\" data-end=\"4005\">ASTM D4918<\/strong> ja ISO standardid.<\/li><li data-start=\"4027\" data-end=\"4081\">Toetab nii <strong data-start=\"4041\" data-end=\"4067\">staatiline ja kineetiline COF<\/strong> m\u00f5\u00f5tmised.<\/li><li data-start=\"4084\" data-end=\"4156\">Pakub k\u00f5rget korratavust koos t\u00e4iustatud digitaalse juhtimise ja andmeedastusega.<\/li><li data-start=\"4159\" data-end=\"4267\">Omab vastupidavat kallutatud tasapinna mehhanismi, mis on ideaalne erinevate paberiklasside ja lainepaberite katsetamiseks.<\/li><\/ul><p data-start=\"4269\" data-end=\"4424\">Kasutades COF-03, saavad kasutajad usaldusv\u00e4\u00e4rseid, standardiseeritud andmeid, mis on olulised pakendi disaini optimeerimiseks ja logistika ohutusstandardite j\u00e4rgimiseks.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ca5dd74 elementor-widget elementor-widget-image\" data-id=\"ca5dd74\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"750\" height=\"750\" src=\"https:\/\/www.coefficientfriction.com\/wp-content\/uploads\/2025\/07\/COF-03-Inclined-Plane-Coefficient-of-Friction-Tester-5_\u526f\u672c.webp\" class=\"attachment-large size-large wp-image-566\" alt=\"ASTM D4918-staatilise h\u00f5\u00f5rdumise katse\" srcset=\"https:\/\/www.coefficientfriction.com\/wp-content\/uploads\/2025\/07\/COF-03-Inclined-Plane-Coefficient-of-Friction-Tester-5_\u526f\u672c.webp 750w, https:\/\/www.coefficientfriction.com\/wp-content\/uploads\/2025\/07\/COF-03-Inclined-Plane-Coefficient-of-Friction-Tester-5_\u526f\u672c-300x300.webp 300w, https:\/\/www.coefficientfriction.com\/wp-content\/uploads\/2025\/07\/COF-03-Inclined-Plane-Coefficient-of-Friction-Tester-5_\u526f\u672c-150x150.webp 150w, https:\/\/www.coefficientfriction.com\/wp-content\/uploads\/2025\/07\/COF-03-Inclined-Plane-Coefficient-of-Friction-Tester-5_\u526f\u672c-12x12.webp 12w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-389c3b7 e-flex e-con-boxed e-con e-parent\" data-id=\"389c3b7\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7c219f3 elementor-widget elementor-widget-heading\" data-id=\"7c219f3\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Rakendused v\u00e4ljaspool paberitestimist<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-b419682 e-flex e-con-boxed e-con e-parent\" data-id=\"b419682\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-81535ce elementor-widget elementor-widget-text-editor\" data-id=\"81535ce\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"4469\" data-end=\"4565\">The <strong data-start=\"4473\" data-end=\"4497\">staatilise h\u00f5\u00f5rdumise katse<\/strong> meetod ulatub kaugemale paberi ja kartongi testimisest. See on kohaldatav:<\/p><ul><li data-start=\"4568\" data-end=\"4599\"><strong data-start=\"4568\" data-end=\"4599\">Tekstiilide vahekihi k\u00e4itumine<\/strong><\/li><li data-start=\"4602\" data-end=\"4635\"><strong data-start=\"4602\" data-end=\"4635\">Lamineeritud pakkematerjalid<\/strong><\/li><li data-start=\"4638\" data-end=\"4694\"><strong data-start=\"4638\" data-end=\"4694\">Papi libisemisomadused joogikandjate puhul<\/strong><\/li><li data-start=\"4697\" data-end=\"4742\"><strong data-start=\"4697\" data-end=\"4742\">Farmaatsiatoodete blisterpakendite h\u00f5\u00f5rdumine<\/strong><\/li><\/ul><p data-start=\"4744\" data-end=\"4888\">Need teadmised aitavad tootjatel projekteerida ohutumaid ja t\u00f5husamaid pakendamiss\u00fcsteeme, mis v\u00e4hendavad tootekahjustusi ja parandavad masinate \u00fchilduvust.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-8ae1d49 e-flex e-con-boxed e-con e-parent\" data-id=\"8ae1d49\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5aa1670 elementor-widget elementor-widget-heading\" data-id=\"5aa1670\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">L\u00f5plikud m\u00f5tted<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-607e70d e-flex e-con-boxed e-con e-parent\" data-id=\"607e70d\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1874455 elementor-widget elementor-widget-text-editor\" data-id=\"1874455\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"4914\" data-end=\"5277\">N\u00f5uetekohaselt teostatud <strong data-start=\"4934\" data-end=\"4958\">staatilise h\u00f5\u00f5rdumise katse<\/strong> ASTM D4918 j\u00e4rgimine v\u00f5imaldab pakendiinseneridel, materjalide arendajatel ja kvaliteedikontrolli ekspertidel tagada, et paberi- ja kartongip\u00f5hised pakendid toimivad tegelikes kasutustingimustes ootusp\u00e4raselt. COF-testimine annab kriitilise t\u00e4htsusega teavet, olgu selleks siis kasti libisemise v\u00e4ltimine saatmisel v\u00f5i automaatsete pakendamisliinide optimeerimine.<\/p><p data-start=\"5279\" data-end=\"5550\">Investeerimine usaldusv\u00e4\u00e4rsetesse katseseadmetesse nagu <strong data-start=\"5321\" data-end=\"5349\">Cell Instruments' COF-03<\/strong> tagab j\u00e4rjepidevad ja t\u00e4psed tulemused erinevate materjalide puhul. Pakendispetsialistide jaoks, kelle eesm\u00e4rk on t\u00e4ita kvaliteedistandardeid ja parandada toodete toimivust, on selle katsemeetodi valdamine h\u00e4davajalik.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-d822f74 e-flex e-con-boxed e-con e-parent\" data-id=\"d822f74\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-0d08481 elementor-widget elementor-widget-heading\" data-id=\"0d08481\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">KKK<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-db120a1 e-flex e-con-boxed e-con e-parent\" data-id=\"db120a1\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2e5d76a elementor-widget elementor-widget-text-editor\" data-id=\"2e5d76a\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"5567\" data-end=\"5814\"><strong data-start=\"5567\" data-end=\"5644\">K1: Mis on peamine erinevus staatilise ja kineetilise h\u00f5\u00f5rdumise katsete vahel?<\/strong><br data-start=\"5644\" data-end=\"5647\" \/>V: Staatiline h\u00f5\u00f5rdumine m\u00f5\u00f5dab j\u00f5udu liikumise alustamiseks, samas kui kineetiline h\u00f5\u00f5rdumine m\u00f5\u00f5dab j\u00f5udu liikumise j\u00e4tkamiseks. ASTM D4918 keskendub ainult staatilisele h\u00f5\u00f5rdumisele.<\/p><p data-start=\"5816\" data-end=\"6012\"><strong data-start=\"5816\" data-end=\"5864\">K2: Kas ASTM D4918 saab kasutada kaetud paberi puhul?<\/strong><br data-start=\"5864\" data-end=\"5867\" \/>V: Kuigi see on peamiselt v\u00e4lja t\u00f6\u00f6tatud katmata paberi jaoks, v\u00f5ib seda kasutada ka muude paberite puhul, kui seda katsetatakse ettevaatlikult ja m\u00f5istetakse v\u00e4hendatud t\u00e4psust.<\/p><p data-start=\"6014\" data-end=\"6210\"><strong data-start=\"6014\" data-end=\"6079\">3. k\u00fcsimus: Milline on pakendi staatilise COF-i vastuv\u00f5etav ulatus?<\/strong><br data-start=\"6079\" data-end=\"6082\" \/>V: Aktsepteeritav vahemik varieerub t\u00f6\u00f6stusharuti. N\u00e4iteks v\u00f5ivad karbimaterjalid n\u00f5uda COF-i \u00fcle 0,4, et tagada virnastamisstabiilsus.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Static Friction Test and ASTM D4918 Understanding the static friction test is crucial for professionals involved in quality control, packaging, paper testing, and related industries. According to ASTM D4918, this method defines how to determine the static coefficient of friction of paper and paperboard materials using an inclined plane. This test is particularly relevant for [&hellip;]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-561","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Static friction test based on ASTM D4918 - Coefficient of Friction Tester<\/title>\n<meta name=\"description\" content=\"Learn how to static friction test according to ASTM D4918. 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