{"id":396,"date":"2025-04-23T03:09:50","date_gmt":"2025-04-23T03:09:50","guid":{"rendered":"https:\/\/www.coefficientfriction.com\/?page_id=396"},"modified":"2025-05-08T01:22:23","modified_gmt":"2025-05-08T01:22:23","slug":"coefficient-of-friction-of-paper","status":"publish","type":"page","link":"https:\/\/www.coefficientfriction.com\/vi\/application\/coefficient-of-friction-of-paper","title":{"rendered":"Paper"},"content":{"rendered":"<div data-elementor-type=\"wp-page\" data-elementor-id=\"396\" class=\"elementor elementor-396\" 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-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<h1 class=\"elementor-heading-title elementor-size-default\">Coefficient of Friction of Paper<\/h1>\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 15359, TAPPI T549<\/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\">Understanding the Coefficient of Friction of Plastic Film<\/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 class=\"\" data-start=\"441\" data-end=\"876\">In the packaging, printing, and paperboard industries, the <em data-start=\"500\" data-end=\"534\">coefficient of friction of paper<\/em> plays a pivotal role in quality control and material handling. This property determines how paper interacts with other surfaces during processing, conveying, stacking, or folding. From smooth feeding in printers to secure packaging during transportation, knowing the coefficient of friction ensures operational efficiency and product safety.<\/p><p class=\"\" data-start=\"878\" data-end=\"1222\">The coefficient of friction (COF) quantifies the resistance between two surfaces in contact\u2014typically calculated using the formula:<br data-start=\"1009\" data-end=\"1012\" \/><strong data-start=\"1012\" data-end=\"1025\">\u03bc = f \u00f7 N<\/strong><br data-start=\"1025\" data-end=\"1028\" \/>where <em data-start=\"1034\" data-end=\"1037\">\u03bc<\/em> is the coefficient of friction, <em data-start=\"1070\" data-end=\"1073\">f<\/em> is the frictional force, and <em data-start=\"1103\" data-end=\"1106\">N<\/em> is the normal force. For paper and board materials, both <strong data-start=\"1164\" data-end=\"1183\">static COF (\u03bcs)<\/strong> and <strong data-start=\"1188\" data-end=\"1208\">kinetic COF (\u03bcd)<\/strong> are critical.<\/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-70bac52 e-flex e-con-boxed e-con e-parent\" data-id=\"70bac52\" 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-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\">Coefficient of Friction Test Methods for Paper and Board<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-271a789 elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"271a789\" 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 class=\"\" data-start=\"1291\" data-end=\"1639\">To evaluate the <em data-start=\"1307\" data-end=\"1341\">coefficient of friction of paper<\/em>, several methods are available. Among the most widely adopted are the <strong data-start=\"1412\" data-end=\"1439\">horizontal plane method<\/strong>, as defined by <strong data-start=\"1455\" data-end=\"1468\">ISO 15359<\/strong>, and the incline plane method referenced in other standards like TAPPI T815. These tests help manufacturers ensure consistent material behavior across production batches.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-1831d6d e-con-full e-flex e-con e-child\" data-id=\"1831d6d\" data-element_type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-ae1b199 e-con-full e-flex elementor-invisible e-con e-child\" data-id=\"ae1b199\" data-element_type=\"container\" data-settings=\"{&quot;animation&quot;:&quot;fadeInLeft&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6a1268b elementor-widget elementor-widget-heading\" data-id=\"6a1268b\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;none&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\">Horizontal Plane Method (ISO 15359)<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-61c6863 elementor-widget elementor-widget-text-editor\" data-id=\"61c6863\" 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 class=\"\" data-start=\"1682\" data-end=\"1988\">The horizontal plane method, outlined in <em data-start=\"1723\" data-end=\"1734\">ISO 15359<\/em>, is one of the most accurate techniques for determining the <em data-start=\"1795\" data-end=\"1817\">paper board COF test<\/em>. It involves placing a sled of known weight on a test specimen and pulling it at a constant speed over a horizontal surface made of the same material. This test measures:<\/p><ul data-start=\"1990\" data-end=\"2149\"><li class=\"\" data-start=\"1990\" data-end=\"2063\"><p class=\"\" data-start=\"1992\" data-end=\"2063\"><strong data-start=\"1992\" data-end=\"2012\">Static COF (\u03bcs):<\/strong> The force required to start the sled\u2019s movement.<\/p><\/li><li class=\"\" data-start=\"2064\" data-end=\"2149\"><p class=\"\" data-start=\"2066\" data-end=\"2149\"><strong data-start=\"2066\" data-end=\"2087\">Kinetic COF (\u03bcd):<\/strong> The force required to maintain a constant motion of the sled.<\/p><\/li><\/ul><p class=\"\" data-start=\"2151\" data-end=\"2321\">This method is highly suitable for smooth and uniform paper surfaces, and it&#8217;s a standard across packaging applications where reliability and repeatability are essential.<\/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-1d3df9e e-con-full e-flex elementor-invisible e-con e-child\" data-id=\"1d3df9e\" data-element_type=\"container\" data-settings=\"{&quot;animation&quot;:&quot;fadeInRight&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6fedc77 elementor-widget elementor-widget-image\" data-id=\"6fedc77\" 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=\"600\" height=\"200\" src=\"https:\/\/www.coefficientfriction.com\/wp-content\/uploads\/2025\/04\/ISO-15359-coefficient-of-friction-of-paper.webp\" class=\"attachment-large size-large wp-image-401\" alt=\"ISO 15359 coefficient of friction of paper\" srcset=\"https:\/\/www.coefficientfriction.com\/wp-content\/uploads\/2025\/04\/ISO-15359-coefficient-of-friction-of-paper.webp 600w, https:\/\/www.coefficientfriction.com\/wp-content\/uploads\/2025\/04\/ISO-15359-coefficient-of-friction-of-paper-300x100.webp 300w, https:\/\/www.coefficientfriction.com\/wp-content\/uploads\/2025\/04\/ISO-15359-coefficient-of-friction-of-paper-18x6.webp 18w\" 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 class=\"elementor-element elementor-element-39a6935 elementor-widget elementor-widget-heading\" data-id=\"39a6935\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;none&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\">Key Parameters (ISO 15359-based):<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c4e9df6 elementor-widget elementor-widget-text-editor\" data-id=\"c4e9df6\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;none&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<ul><li class=\"\" data-start=\"2362\" data-end=\"2392\"><p class=\"\" data-start=\"2364\" data-end=\"2392\"><strong data-start=\"2364\" data-end=\"2380\">Sled weight:<\/strong> 200 \u00b1 1 g<\/p><\/li><li class=\"\" data-start=\"2393\" data-end=\"2423\"><p class=\"\" data-start=\"2395\" data-end=\"2423\"><strong data-start=\"2395\" data-end=\"2410\">Test speed:<\/strong> 100 mm\/min<\/p><\/li><li class=\"\" data-start=\"2424\" data-end=\"2500\"><p class=\"\" data-start=\"2426\" data-end=\"2500\"><strong data-start=\"2426\" data-end=\"2450\">Specimen dimensions:<\/strong> Consistent across tests to ensure comparability<\/p><\/li><li class=\"\" data-start=\"2501\" data-end=\"2564\"><p class=\"\" data-start=\"2503\" data-end=\"2564\"><strong data-start=\"2503\" data-end=\"2526\">Ambient conditions:<\/strong> Controlled temperature and humidity<\/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\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-ad429b3 e-flex e-con-boxed e-con e-parent\" data-id=\"ad429b3\" 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-44e6528 elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"44e6528\" 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\">Why Coefficient of Friction Matters in Paper Applications<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9967cdc elementor-widget elementor-widget-text-editor\" data-id=\"9967cdc\" 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 class=\"\" data-start=\"2634\" data-end=\"2767\">The <em data-start=\"2638\" data-end=\"2668\">coefficient of friction test<\/em> is essential in determining how paper sheets interact in real-world use. Consider these scenarios:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a786479 e-con-full e-flex e-con e-child\" data-id=\"a786479\" data-element_type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-c1d69c7 e-con-full e-flex e-con e-child\" data-id=\"c1d69c7\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ab7af54 elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"ab7af54\" 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\">Printing<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-26a0129 elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"26a0129\" 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>Paper with too low a COF may slip and misfeed.<\/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-7b75e2d e-con-full e-flex e-con e-child\" data-id=\"7b75e2d\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-99cb688 elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"99cb688\" 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\">Folding and gluing<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-16b485e elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"16b485e\" 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>High COF may cause jams in automated lines.<\/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-aad265c e-con-full e-flex e-con e-child\" data-id=\"aad265c\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1cebbd4 elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"1cebbd4\" 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\">Stacking and packaging<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b6f2d47 elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"b6f2d47\" 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>COF values directly impact load stability during shipping.<\/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<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8b8966a elementor-widget elementor-widget-text-editor\" data-id=\"8b8966a\" 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 class=\"\" data-start=\"2996\" data-end=\"3144\">Manufacturers of packaging materials, corrugated boxes, or coated paper must regularly test for COF to meet both functional and safety requirements.<\/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-3703318 e-flex e-con-boxed e-con e-parent\" data-id=\"3703318\" 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-9d80ed0 elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"9d80ed0\" 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\">Recommended Instruments for Paper Slip Coefficient Testing<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-9387db5 e-con-full e-flex e-con e-child\" data-id=\"9387db5\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e136a83 elementor-invisible elementor-widget elementor-widget-text-editor\" data-id=\"e136a83\" 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 class=\"\" data-start=\"3215\" data-end=\"3393\">For accurate and reliable testing, specialized instruments like the <strong data-start=\"3283\" data-end=\"3324\">COF-01 Coefficient of Friction Tester<\/strong> by <strong data-start=\"3328\" data-end=\"3348\">Cell Instruments<\/strong> are highly recommended. It is designed with:<\/p><ul data-start=\"3395\" data-end=\"3717\"><li class=\"\" data-start=\"3395\" data-end=\"3481\"><p class=\"\" data-start=\"3397\" data-end=\"3481\"><strong data-start=\"3397\" data-end=\"3433\">PLC control and HMI touch screen<\/strong>, offering precise and user-friendly operation<\/p><\/li><li class=\"\" data-start=\"3482\" data-end=\"3558\"><p class=\"\" data-start=\"3484\" data-end=\"3558\"><strong data-start=\"3484\" data-end=\"3505\">Dual-mode testing<\/strong>, capable of measuring both static and kinetic COFs<\/p><\/li><li class=\"\" data-start=\"3559\" data-end=\"3634\"><p class=\"\" data-start=\"3561\" data-end=\"3634\"><strong data-start=\"3561\" data-end=\"3608\">Real-time curves and digital data recording<\/strong>, enhancing traceability<\/p><\/li><li class=\"\" data-start=\"3635\" data-end=\"3717\"><p class=\"\" data-start=\"3637\" data-end=\"3717\"><strong data-start=\"3637\" data-end=\"3666\">Compliance with <a href=\"https:\/\/www.coefficientfriction.com\/vi\/iso-15359\/\" target=\"_blank\" rel=\"noopener\">ISO 15359<\/a><\/strong>, making it ideal for lab use and quality assurance<\/p><\/li><\/ul><p class=\"\" data-start=\"3719\" data-end=\"4050\">For tests that require evaluating <em data-start=\"3753\" data-end=\"3777\">paper slip coefficient<\/em> using incline plane techniques, the <strong data-start=\"3814\" data-end=\"3845\">COF-03 Incline Plane Tester<\/strong> is a great alternative. It is particularly effective for evaluating the initial angle at which a paper sample begins to slide\u2014measuring only the static coefficient but offering quick comparative insights.<\/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-ffa7f71 elementor-invisible elementor-widget elementor-widget-image\" data-id=\"ffa7f71\" 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<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.coefficientfriction.com\/vi\/coefficient-of-friction-testing-equipment\/\">\n\t\t\t\t\t\t\t<img decoding=\"async\" width=\"600\" height=\"600\" src=\"https:\/\/www.coefficientfriction.com\/wp-content\/uploads\/2025\/03\/coefficient-of-friction-testing-equipment-03.webp\" class=\"attachment-large size-large wp-image-98\" alt=\"coefficient of friction testing equipment 03\" srcset=\"https:\/\/www.coefficientfriction.com\/wp-content\/uploads\/2025\/03\/coefficient-of-friction-testing-equipment-03.webp 600w, https:\/\/www.coefficientfriction.com\/wp-content\/uploads\/2025\/03\/coefficient-of-friction-testing-equipment-03-300x300.webp 300w, https:\/\/www.coefficientfriction.com\/wp-content\/uploads\/2025\/03\/coefficient-of-friction-testing-equipment-03-150x150.webp 150w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">COF-01 Coefficient of Friction Tester<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\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\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Coefficient of Friction of Paper ISO 15359, TAPPI T549 Understanding the Coefficient of Friction of Plastic Film In the packaging, printing, and paperboard industries, the coefficient of friction of paper plays a pivotal role in quality control and material handling. This property determines how paper interacts with other surfaces during processing, conveying, stacking, or folding. [&hellip;]<\/p>","protected":false},"author":2,"featured_media":0,"parent":52,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"elementor_header_footer","meta":{"footnotes":""},"class_list":["post-396","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.coefficientfriction.com\/vi\/wp-json\/wp\/v2\/pages\/396","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.coefficientfriction.com\/vi\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.coefficientfriction.com\/vi\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.coefficientfriction.com\/vi\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.coefficientfriction.com\/vi\/wp-json\/wp\/v2\/comments?post=396"}],"version-history":[{"count":6,"href":"https:\/\/www.coefficientfriction.com\/vi\/wp-json\/wp\/v2\/pages\/396\/revisions"}],"predecessor-version":[{"id":711,"href":"https:\/\/www.coefficientfriction.com\/vi\/wp-json\/wp\/v2\/pages\/396\/revisions\/711"}],"up":[{"embeddable":true,"href":"https:\/\/www.coefficientfriction.com\/vi\/wp-json\/wp\/v2\/pages\/52"}],"wp:attachment":[{"href":"https:\/\/www.coefficientfriction.com\/vi\/wp-json\/wp\/v2\/media?parent=396"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}