{"id":18612,"date":"2025-10-12T12:46:26","date_gmt":"2025-10-12T12:46:26","guid":{"rendered":"https:\/\/www.qualtechproductsindustry.com\/tappi-t-549-cof-of-paper-paperboard-with-the-horizontal-plane-method-discuss-the-specific-use-and-purpose-you-can-write-extensively-about-what-a-particular-astm-test-method-is-design\/"},"modified":"2025-10-19T18:37:25","modified_gmt":"2025-10-19T18:37:25","slug":"tappi-t-549","status":"publish","type":"post","link":"https:\/\/www.qualtechproductsindustry.com\/pt\/tappi-t-549\/","title":{"rendered":"TAPPI T 549 \u2014 COF do papel e do cart\u00e3o: utiliza\u00e7\u00e3o, finalidade e perspetivas do setor"},"content":{"rendered":"<p>Quando \u00e9 necess\u00e1rio medir a facilidade com que o papel ou o cart\u00e3o desliza sobre superf\u00edcies, a norma TAPPI T 549 fornece o m\u00e9todo padr\u00e3o da ind\u00fastria para determinar o coeficiente de atrito (COF). Este ensaio utiliza o m\u00e9todo do plano horizontal para medir a for\u00e7a necess\u00e1ria para deslocar um material sobre outro a uma velocidade constante. O ensaio \u00e9 essencial para\u2026 <\/p>\n<div class=\"pmpro\">\n<div class=\"pmpro_card pmpro_content_message\">\n<h2 class=\"pmpro_card_title pmpro_font-large\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"24\" height=\"24\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"var(--pmpro--color--accent)\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" class=\"feather feather-lock\"><rect x=\"3\" y=\"11\" width=\"18\" height=\"11\" rx=\"2\" ry=\"2\"><\/rect><path d=\"M7 11V7a5 5 0 0 1 10 0v4\"><\/path><\/svg>Cole\u00e7\u00e3o de An\u00e1lises e Coment\u00e1rios \u2013 \u00c9 necess\u00e1ria uma subscri\u00e7\u00e3o<\/h2>\n<div class=\"pmpro_card_content\">\n<p> Tem de ser membro da cole\u00e7\u00e3o \u00abInsights &amp; Commentary\u00bb para aceder a este conte\u00fado.<\/p>\n<p><a class=\"pmpro_btn\" href=\"https:\/\/www.qualtechproductsindustry.com\/pt\/membership-checkout\/?pmpro_level=1\">Inscreva-se agora<\/a><\/p>\n<\/div>\n<div class=\"pmpro_card_actions pmpro_font-medium\">J\u00e1 \u00e9 membro? <a href=\"https:\/\/www.qualtechproductsindustry.com\/pt\/login\/?redirect_to=https%3A%2F%2Fwww.qualtechproductsindustry.com%2Fpt%2Ftappi-t-549%2F\">Inicie sess\u00e3o aqui<\/a><\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>When you need to measure how easily paper or paperboard slides against surfaces, TAPPI T 549 provides the industry standard method for determining the coefficient of friction (COF). This test uses the horizontal plane method to measure the force needed to move one material across another at a constant speed. The test is essential for... <\/p>\n<div class=\"pmpro\"><div class=\"pmpro_card pmpro_content_message\"><h2 class=\"pmpro_card_title pmpro_font-large\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"24\" height=\"24\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"var(--pmpro--color--accent)\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" class=\"feather feather-lock\"><rect x=\"3\" y=\"11\" width=\"18\" height=\"11\" rx=\"2\" ry=\"2\"><\/rect><path d=\"M7 11V7a5 5 0 0 1 10 0v4\"><\/path><\/svg>Cole\u00e7\u00e3o de An\u00e1lises e Coment\u00e1rios \u2013 \u00c9 necess\u00e1ria uma subscri\u00e7\u00e3o<\/h2><div class=\"pmpro_card_content\"><p> Tem de ser membro da cole\u00e7\u00e3o \u00abInsights &amp; Commentary\u00bb para aceder a este conte\u00fado.<\/p><p><a class=\"pmpro_btn\" href=\"https:\/\/www.qualtechproductsindustry.com\/pt\/membership-checkout\/?pmpro_level=1\">Inscreva-se agora<\/a><\/p><\/div><div class=\"pmpro_card_actions pmpro_font-medium\">J\u00e1 \u00e9 membro? <a href=\"https:\/\/www.qualtechproductsindustry.com\/pt\/login\/?redirect_to=https%3A%2F%2Fwww.qualtechproductsindustry.com%2Fpt%2Ftappi-t-549%2F\">Inicie sess\u00e3o aqui<\/a><\/div><\/div><\/div>","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"pmpro_default_level":"","footnotes":""},"categories":[534,543],"tags":[],"class_list":["post-18612","post","type-post","status-publish","format-standard","hentry","category-science","category-tappi","pmpro-level-required","pmpro-level-1","pmpro-no-access"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>TAPPI T 549 \u2014 COF of Paper &amp; Paperboard: Use, Purpose, and Industry Insight - QUALTECH PRODUCTS INDUSTRY<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.qualtechproductsindustry.com\/pt\/tappi-t-549\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"TAPPI T 549 \u2014 COF of Paper &amp; Paperboard: Use, Purpose, and Industry Insight - QUALTECH PRODUCTS INDUSTRY\" \/>\n<meta property=\"og:description\" content=\"When you need to measure how easily paper or paperboard slides against surfaces, TAPPI T 549 provides the industry standard method for determining the coefficient of friction (COF). 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