{"id":181,"date":"2025-03-28T07:16:18","date_gmt":"2025-03-28T07:16:18","guid":{"rendered":"https:\/\/www.coefficientfriction.com\/?page_id=181"},"modified":"2025-03-31T06:16:27","modified_gmt":"2025-03-31T06:16:27","slug":"iso-8295","status":"publish","type":"page","link":"https:\/\/www.coefficientfriction.com\/fi\/iso-8295","title":{"rendered":"ISO 8295"},"content":{"rendered":"<div data-elementor-type=\"wp-page\" data-elementor-id=\"181\" class=\"elementor elementor-181\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e87c6b2 e-flex e-con-boxed e-con e-parent\" data-id=\"e87c6b2\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-d087c52 e-con-full e-flex e-con e-child\" data-id=\"d087c52\" data-element_type=\"container\" data-settings=\"{&quot;animation&quot;:&quot;none&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d9f31fd elementor-invisible elementor-widget elementor-widget-image\" data-id=\"d9f31fd\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;zoomIn&quot;}\" 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=\"600\" height=\"200\" src=\"https:\/\/www.coefficientfriction.com\/wp-content\/uploads\/2025\/03\/ISO-8295.webp\" class=\"attachment-large size-large wp-image-171\" alt=\"ISO 8295\" srcset=\"https:\/\/www.coefficientfriction.com\/wp-content\/uploads\/2025\/03\/ISO-8295.webp 600w, https:\/\/www.coefficientfriction.com\/wp-content\/uploads\/2025\/03\/ISO-8295-300x100.webp 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/>\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<\/div>\n\t\t<div class=\"elementor-element elementor-element-60fbb6b e-con-full e-flex e-con e-child\" data-id=\"60fbb6b\" data-element_type=\"container\" data-settings=\"{&quot;animation&quot;:&quot;none&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-0e3633c elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"0e3633c\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;zoomIn&quot;}\" 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\">Muovikalvojen ja -levyjen kitkakertoimen testaus<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a73bac6 elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"a73bac6\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" 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>ISO 8295 on olennainen standardi, jossa m\u00e4\u00e4ritet\u00e4\u00e4n menetelm\u00e4, jolla m\u00e4\u00e4ritet\u00e4\u00e4n <b>kitkakerroin (COF)<\/b> muovikalvot ja -levyt. T\u00e4m\u00e4 testi tarjoaa j\u00e4sennellyn l\u00e4hestymistavan sen mittaamiseen, miten muovikalvo on vuorovaikutuksessa itsens\u00e4 tai muiden pintojen kanssa kontrolloiduissa olosuhteissa. <b>staattinen ja dynaaminen kitka<\/b>, jotka ovat ratkaisevan t\u00e4rkeit\u00e4 arvioitaessa muovimateriaalien k\u00e4sittely\u00e4, jalostusta ja k\u00e4ytett\u00e4vyytt\u00e4 eri teollisuudenaloilla, kuten seuraavilla aloilla <b>pakkaukset, elintarvikkeet, l\u00e4\u00e4kkeet ja elektroniikka<\/b>.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\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-0364755 e-flex e-con-boxed e-con e-parent\" data-id=\"0364755\" 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-f673fbc elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"f673fbc\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" 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\">Mik\u00e4 on ISO 8295?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-156f03e elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"156f03e\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" 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><strong>ISO 8295<\/strong>\u00a0on kansainv\u00e4linen standardi, jossa m\u00e4\u00e4ritell\u00e4\u00e4n menetelm\u00e4t enint\u00e4\u00e4n 0,5 mm:n paksuisten tarttumattomien muovikalvojen ja -levyjen kitkakertoimien (COF) m\u00e4\u00e4ritt\u00e4miseksi. Sill\u00e4 varmistetaan, ett\u00e4 materiaalit t\u00e4ytt\u00e4v\u00e4t suorituskykyvaatimukset esimerkiksi pakkauksissa, autojen sis\u00e4tiloissa ja l\u00e4\u00e4kinn\u00e4llisten laitteiden valmistuksessa. Standardoimalla testausolosuhteet - mukaan lukien l\u00e4mp\u00f6tila (23 \u00b0C \u00b1 2 \u00b0C), kosteus (50% \u00b1 5%) ja laitem\u00e4\u00e4rittelyt - ISO 8295 takaa laadunvalvonnan kannalta kriittiset toistettavat tulokset.<\/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-38e9bd9 elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"38e9bd9\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" 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\">Kitkakertoimen testaus: Kitkakitka: Periaatteet ja menetelm\u00e4t<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-b4a43e8 e-con-full e-flex e-con e-child\" data-id=\"b4a43e8\" data-element_type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-1797b09 e-con-full e-flex elementor-invisible e-con e-child\" data-id=\"1797b09\" data-element_type=\"container\" data-settings=\"{&quot;animation&quot;:&quot;fadeInLeft&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-47bfa6d elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"47bfa6d\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" 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\">Keskeiset testausperiaatteet<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-22b42a5 elementor-widget elementor-widget-text-editor\" data-id=\"22b42a5\" 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>osoitteessa\u00a0<strong>ISO 8295<\/strong>, kitkakertoimen testaus mittaa kahden kosketuksissa olevan pinnan v\u00e4list\u00e4 vastusta. Keskeisi\u00e4 m\u00e4\u00e4ritelmi\u00e4 ovat mm:<\/p><ul><li><strong>Staattinen kitka<\/strong>: Voima, joka tarvitaan pintojen v\u00e4lisen liikkeen k\u00e4ynnist\u00e4miseen.<\/li><li><strong>Dynaaminen kitka<\/strong>: Jatkuvan liukumisen aikana jatkuva voima.<\/li><\/ul><p>Kerroin lasketaan kitkavoiman (F) ja normaalivoiman (F) suhteena.<sub>P<\/sub>), joiden arvot vaihtelevat yleens\u00e4 0,2:sta 1:een.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-2c0665b e-con-full e-flex elementor-invisible e-con e-child\" data-id=\"2c0665b\" data-element_type=\"container\" data-settings=\"{&quot;animation&quot;:&quot;fadeInRight&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-843f947 elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"843f947\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" 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\">Laitteita koskevat vaatimukset<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-532058d elementor-widget elementor-widget-text-editor\" data-id=\"532058d\" 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>A my\u00f6ntyv\u00e4inen\u00a0<a href=\"https:\/\/www.coefficientfriction.com\/fi\/coefficient-of-friction-testing-equipment\/\" target=\"_blank\" rel=\"noopener\"><strong>COF-testauskone<\/strong><\/a>\u00a0t\u00e4ytyy sis\u00e4lt\u00e4\u00e4:<\/p><ol start=\"1\"><li><p><strong>Vaakasuora testausp\u00f6yt\u00e4<\/strong>: Varmistaa vakaan, t\u00e4rin\u00e4tt\u00f6m\u00e4n tuen.<\/p><\/li><li><p><strong>Kelkka<\/strong>: Standardoitu massa (200 g \u00b12 g) tasaisen paineen aikaansaamiseksi.<\/p><\/li><li><p><strong>Voimanmittausj\u00e4rjestelm\u00e4<\/strong>: Tarkkuusanturit, joiden virhemarginaali on \u22642%.<\/p><\/li><li><p><strong>Nopeuden s\u00e4\u00e4t\u00f6<\/strong>: 100 mm\/min tai 500 mm\/min erikoiskalvoille.<\/p><\/li><\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\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-9d958da e-flex e-con-boxed e-con e-parent\" data-id=\"9d958da\" 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-5055911 elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"5055911\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" 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\">ISO 8295 -standardin mukaisen testauksen t\u00e4rkeimm\u00e4t vaiheet<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-0424cfa e-con-full e-grid e-con e-child\" data-id=\"0424cfa\" data-element_type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-a290580 e-con-full e-flex elementor-invisible e-con e-child\" data-id=\"a290580\" data-element_type=\"container\" data-settings=\"{&quot;animation&quot;:&quot;fadeInLeft&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7cac45b elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"7cac45b\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInLeft&quot;}\" 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<h5>1. N\u00e4ytteen valmistelu<\/h5><ul><li>Leikataan n\u00e4ytteit\u00e4 (80 mm x 200 mm) materiaalin tasaisista osista.<\/li><li>Varmista, ett\u00e4 pinnat ovat puhtaat, p\u00f6lytt\u00f6m\u00e4t ja vahingoittumattomat.<\/li><\/ul><h5>2. Ehdollistaminen<\/h5><ul><li>N\u00e4ytteit\u00e4 esik\u00e4sitell\u00e4\u00e4n \u226516 tuntia 23 \u00b0C:ssa ja 50%:n kosteudessa materiaaliominaisuuksien vakauttamiseksi.<\/li><\/ul><h5>3. Testausmenettely<\/h5><ol><li>Kiinnit\u00e4 yksi n\u00e4yte testausp\u00f6yd\u00e4lle.<\/li><li>Aseta kelkka toisen n\u00e4ytteen p\u00e4\u00e4lle ja kohdista siihen 1,96 N:n normaalivoima.<\/li><li>Aloita liukuminen hallitulla nopeudella ja kirjaa staattiset (huippuvoima) ja dynaamiset (keskim\u00e4\u00e4r\u00e4inen voima 6 cm:n matkalla) kitka-arvot.<\/li><\/ol><h5>4. Tietojen analysointi<\/h5><p>Laske kertoimet k\u00e4ytt\u00e4m\u00e4ll\u00e4:<\/p><ul><li><strong>Staattinen COF<\/strong>: \u03bc<sub>S<\/sub>\u00a0= F<sub>S<\/sub>\u00a0\/ F<sub>P<\/sub> (Liikkeen k\u00e4ynnist\u00e4miseen tarvittava voima \/ Normaali voima)<\/li><li><strong>Dynaaminen COF<\/strong>: \u03bc<sub>D<\/sub>\u00a0= F<sub>D<\/sub>\u00a0\/ F<sub>P<\/sub> (Liikkeen yll\u00e4pit\u00e4miseen tarvittava voima \/ Normaali voima)<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-3a3fc5c e-con-full e-flex e-con e-child\" data-id=\"3a3fc5c\" data-element_type=\"container\" data-settings=\"{&quot;animation&quot;:&quot;none&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8c85174 elementor-invisible elementor-widget elementor-widget-video\" data-id=\"8c85174\" data-element_type=\"widget\" data-settings=\"{&quot;youtube_url&quot;:&quot;https:\\\/\\\/youtu.be\\\/NUgXENOz8J0&quot;,&quot;_animation&quot;:&quot;fadeInRight&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<div class=\"elementor-element elementor-element-f5aa253 elementor-invisible elementor-widget elementor-widget-image\" data-id=\"f5aa253\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInRight&quot;}\" 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\t<a href=\"https:\/\/www.coefficientfriction.com\/fi\/coefficient-of-friction-testing-equipment\/\">\n\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/www.coefficientfriction.com\/wp-content\/uploads\/elementor\/thumbs\/coefficient-of-friction-testing-equipment-02-r3gmfhxbshv5s8cb9lwesyw1eucn1cj36pky39oul4.webp\" title=\"kitkakertoimen testauslaitteet 02\" alt=\"kitkakertoimen testauslaitteet 02\" loading=\"lazy\" \/>\t\t\t\t\t\t\t\t<\/a>\n\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<\/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-f7106d9 e-flex e-con-boxed e-con e-parent\" data-id=\"f7106d9\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-b0586e5 e-con-full e-flex elementor-invisible e-con e-child\" data-id=\"b0586e5\" data-element_type=\"container\" data-settings=\"{&quot;animation&quot;:&quot;fadeInLeft&quot;}\">\n\t\t<div class=\"elementor-element elementor-element-f9046cc e-con-full e-flex e-con e-child\" data-id=\"f9046cc\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-c4f0b8e elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"c4f0b8e\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInLeft&quot;}\" 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\">ISO 8295:n sovellukset teollisuudessa<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2186d6f elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"2186d6f\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInLeft&quot;}\" 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>Muovikalvojen kitkaominaisuudet vaikuttavat merkitt\u00e4v\u00e4sti niiden suorituskykyyn seuraavissa tapauksissa <strong>pakkauslinjat, sinet\u00f6intikoneet ja muut k\u00e4sittelylaitteet<\/strong>. Korkea COF voi johtaa materiaalin jumiutumiseen, kun taas liian matala COF voi aiheuttaa <strong>liukuminen ja virheasento<\/strong>.\u00a0<\/p><p>Suorittamalla <strong>kitkakertoimen testaus<\/strong>, valmistajat voivat varmistaa, ett\u00e4 niiden tuotteet t\u00e4ytt\u00e4v\u00e4t <strong>ISO 8295<\/strong> standardit ja optimoida kalvon koostumukset haluttujen kitkaominaisuuksien saavuttamiseksi. T\u00e4m\u00e4 on erityisen t\u00e4rke\u00e4\u00e4:<\/p><ul data-spread=\"false\"><li><p><strong>Elintarvikepakkaukset:<\/strong> Automaattisten pakkaus- ja t\u00e4ytt\u00f6koneiden sujuvan toiminnan varmistaminen.<\/p><\/li><li><p><strong>L\u00e4\u00e4ketieteelliset pakkaukset:<\/strong> Kun kontrolloidut liukuominaisuudet est\u00e4v\u00e4t kontaminaation ja varmistavat steriilin k\u00e4sittelyn.<\/p><\/li><li><p><strong>Muovikalvon valmistus:<\/strong> Laadunvalvontaan ja tuotteiden yhdenmukaisuuteen.<\/p><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-694940d e-con-full e-flex e-con e-child\" data-id=\"694940d\" data-element_type=\"container\" data-settings=\"{&quot;animation&quot;:&quot;none&quot;}\">\n\t\t<div class=\"elementor-element elementor-element-8ea1c6c e-con-full e-flex e-con e-child\" data-id=\"8ea1c6c\" data-element_type=\"container\" data-settings=\"{&quot;animation&quot;:&quot;none&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f6ee6d5 elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"f6ee6d5\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInRight&quot;}\" 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\">Muovikalvojen COF:\u00e4\u00e4n vaikuttavat tekij\u00e4t<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-663e3cc elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"663e3cc\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInRight&quot;}\" 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>Muovikalvojen kitkak\u00e4ytt\u00e4ytymiseen vaikuttavat useat muuttujat, kuten:<\/p><ul><li><strong>Elokuvan koostumus<\/strong>: Lis\u00e4aineet, kuten liukastusaineet, voivat muuttaa pintaominaisuuksia.<\/li><li><strong>Pinnan rakenne<\/strong>: Sileill\u00e4 ja kohokuvioiduilla pinnoilla on erilaiset kitkatasot.<\/li><li><strong>Ymp\u00e4rist\u00f6olosuhteet<\/strong>: Kosteus ja l\u00e4mp\u00f6tila voivat vaikuttaa mittauksiin.<\/li><li><strong>Ik\u00e4\u00e4ntymisen vaikutukset<\/strong>: COF-arvot voivat muuttua ajan my\u00f6t\u00e4, kun liukastavia lis\u00e4aineita siirtyy pintaan.<\/li><\/ul>\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-c62fc60 elementor-invisible elementor-widget elementor-widget-image\" data-id=\"c62fc60\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;zoomIn&quot;}\" 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=\"600\" height=\"200\" src=\"https:\/\/www.coefficientfriction.com\/wp-content\/uploads\/2025\/03\/ISO-8295.webp\" class=\"attachment-large size-large wp-image-171\" alt=\"ISO 8295\" srcset=\"https:\/\/www.coefficientfriction.com\/wp-content\/uploads\/2025\/03\/ISO-8295.webp 600w, https:\/\/www.coefficientfriction.com\/wp-content\/uploads\/2025\/03\/ISO-8295-300x100.webp 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/>\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<\/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-6d2c64c e-flex e-con-boxed e-con e-parent\" data-id=\"6d2c64c\" 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-c394047 elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"c394047\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;}\" 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\">UKK<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b484e06 elementor-invisible elementor-widget elementor-widget-n-accordion\" data-id=\"b484e06\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInUp&quot;,&quot;default_state&quot;:&quot;expanded&quot;,&quot;max_items_expended&quot;:&quot;one&quot;,&quot;n_accordion_animation_duration&quot;:{&quot;unit&quot;:&quot;ms&quot;,&quot;size&quot;:400,&quot;sizes&quot;:[]}}\" data-widget_type=\"nested-accordion.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"e-n-accordion\" aria-label=\"Harmonikka. Avaa linkit Enterill\u00e4 tai v\u00e4lily\u00f6nnill\u00e4, sulje linkit Escape-n\u00e4pp\u00e4imell\u00e4 ja navigoi nuolin\u00e4pp\u00e4imill\u00e4.\">\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-1890\" class=\"e-n-accordion-item\" open>\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"1\" tabindex=\"0\" aria-expanded=\"true\" aria-controls=\"e-n-accordion-item-1890\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> 1. Mik\u00e4 on ISO 8295 -standardin tarkoitus? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-minus\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-plus\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-1890\" class=\"elementor-element elementor-element-4dda86b e-con-full e-flex e-con e-child\" data-id=\"4dda86b\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b1ee56f elementor-widget elementor-widget-text-editor\" data-id=\"b1ee56f\" 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>ISO 8295 standardoi menetelm\u00e4n staattisen ja dynaamisen l\u00e4mp\u00f6tilan m\u00e4\u00e4ritt\u00e4miseksi. <strong>kitkakerroin<\/strong> (COF) muovikalvojen johdonmukaisuuden ja laadun varmistamiseksi valmistuksessa.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-1891\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"2\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-1891\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> 2. Miten kitka vaikuttaa muovikalvon suorituskykyyn? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-minus\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-plus\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-1891\" class=\"elementor-element elementor-element-4213cd7 e-con-full e-flex e-con e-child\" data-id=\"4213cd7\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a5cb0ea elementor-widget elementor-widget-text-editor\" data-id=\"a5cb0ea\" 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>Kitka vaikuttaa kalvon k\u00e4sittelyyn <strong>pakkaus- ja k\u00e4sittelykoneet<\/strong>. Korkea kitka voi aiheuttaa jumiutumista, kun taas matala kitka voi johtaa liukumiseen ja virheasentoon.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-1892\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"3\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-1892\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> 3. Mitk\u00e4 tekij\u00e4t vaikuttavat COF-testin tuloksiin? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-minus\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-plus\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-1892\" class=\"elementor-element elementor-element-8cbaf70 e-con-full e-flex e-con e-child\" data-id=\"8cbaf70\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ed707d2 elementor-widget elementor-widget-text-editor\" data-id=\"ed707d2\" 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>Materiaalikoostumus, pintarakenne, ymp\u00e4rist\u00f6olosuhteet ja kalvon vanheneminen vaikuttavat kaikki materiaaliin. <strong>kitkamittaukset<\/strong>.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-1893\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"4\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-1893\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> 4. Mit\u00e4 ovat staattinen ja dynaaminen COF? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-minus\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-plus\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-1893\" class=\"elementor-element elementor-element-f9fe3ff e-flex e-con-boxed e-con e-child\" data-id=\"f9fe3ff\" 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-7e0556e elementor-widget elementor-widget-text-editor\" data-id=\"7e0556e\" 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><strong>Staattinen COF<\/strong>: Liikkeen k\u00e4ynnist\u00e4miseen tarvittava voima.<\/li><li><strong>Dynaaminen COF<\/strong>: Liikkeen yll\u00e4pit\u00e4miseen tarvittava voima.<\/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\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-1894\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"5\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-1894\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> 5. Miksi valmistajien tulisi k\u00e4ytt\u00e4\u00e4 COF-01-kitkatesteri? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-minus\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-plus\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-1894\" class=\"elementor-element elementor-element-c84fd44 e-flex e-con-boxed e-con e-child\" data-id=\"c84fd44\" 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-f5c5a07 elementor-widget elementor-widget-text-editor\" data-id=\"f5c5a07\" 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><span style=\"font-size: 16px;\">The <\/span><strong style=\"font-size: 16px;\">COF-01 kitkatesteri<\/strong><span style=\"font-size: 16px;\"> varmistaa <\/span><strong style=\"font-size: 16px;\">korkea tarkkuus, ISO 8295 -standardin noudattaminen ja optimoidut kalvo-ominaisuudet.<\/strong><span style=\"font-size: 16px;\">, mik\u00e4 tekee siit\u00e4 ihanteellisen teollisiin sovelluksiin.<\/span><\/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\t<\/details>\n\t\t\t\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\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Muovikalvojen ja -levyjen kitkakerroinmittaus ISO 8295 on keskeinen standardi, jossa m\u00e4\u00e4ritell\u00e4\u00e4n menetelm\u00e4 muovikalvojen ja -levyjen kitkakerroimen (COF) m\u00e4\u00e4ritt\u00e4miseksi. T\u00e4m\u00e4 testi tarjoaa j\u00e4sennellyn l\u00e4hestymistavan sen mittaamiseen, miten muovikalvo k\u00e4ytt\u00e4ytyy itsens\u00e4 tai muiden pintojen kanssa kontrolloiduissa olosuhteissa, ja siin\u00e4 arvioidaan sek\u00e4 staattista ett\u00e4 [\u2026]<\/p>","protected":false},"author":2,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"elementor_header_footer","meta":{"footnotes":""},"class_list":["post-181","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.coefficientfriction.com\/fi\/wp-json\/wp\/v2\/pages\/181","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.coefficientfriction.com\/fi\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.coefficientfriction.com\/fi\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.coefficientfriction.com\/fi\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.coefficientfriction.com\/fi\/wp-json\/wp\/v2\/comments?post=181"}],"version-history":[{"count":5,"href":"https:\/\/www.coefficientfriction.com\/fi\/wp-json\/wp\/v2\/pages\/181\/revisions"}],"predecessor-version":[{"id":314,"href":"https:\/\/www.coefficientfriction.com\/fi\/wp-json\/wp\/v2\/pages\/181\/revisions\/314"}],"wp:attachment":[{"href":"https:\/\/www.coefficientfriction.com\/fi\/wp-json\/wp\/v2\/media?parent=181"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}