{"id":9848,"date":"2026-02-24T15:11:45","date_gmt":"2026-02-24T07:11:45","guid":{"rendered":"https:\/\/www.packqc.com\/standard\/tappi-t549-2\/"},"modified":"2026-04-16T09:59:50","modified_gmt":"2026-04-16T01:59:50","slug":"tappi-t549","status":"publish","type":"standard","link":"https:\/\/www.packqc.com\/hr\/standard\/tappi-t549\/","title":{"rendered":"TAPPI T549"},"content":{"rendered":"<h2 class=\"wp-block-heading\">Za\u0161to je mjerenje koeficijenta trenja papira va\u017eno<\/h2>\n\n\n\n<p>Povr\u0161ine papira dinami\u010dki me\u0111usobno djeluju tijekom procesa proizvodnje i primjene. <strong data-start=\"1535\" data-end=\"1549\">statik COF<\/strong> mjeri silu potrebnu za pokretanje klizanja izme\u0111u dviju plo\u010da, dok <strong data-start=\"1628\" data-end=\"1643\">kineti\u010dki COF<\/strong> odnosi se na silu potrebnu za odr\u017eavanje kretanja pri konstantnoj brzini. Previ\u0161e klizav papir mo\u017ee dovesti do pogre\u0161nog uvla\u010denja papira, dok povr\u0161ina s pretjeranim trenjem mo\u017ee uzrokovati trganje ili zaglavljivanje.<\/p>\n\n\n\n<p>TAPPI T549 se posebno bavi trenjem. <strong data-start=\"1878\" data-end=\"1938\">izme\u0111u dva lista nepremazanog papira za pisanje ili tiskanje<\/strong>, simuliraju\u0107i uvjete tijekom slaganja, hranjenja ili prijevoza listova kroz pisa\u010de i fotokopirke. To\u010dno <strong data-start=\"2053\" data-end=\"2098\">Mjerenje koeficijenta trenja papira<\/strong> poma\u017ee u optimizaciji formulacija proizvoda, procjeni u\u010dinkovitosti premaza i osiguravanju dosljednosti kvalitete me\u0111u serijama.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Pregled standardne ispitne metode prema TAPPI T549<\/h2>\n\n\n\n<p>Test TAPPI T549 uklju\u010duje <strong data-start=\"2314\" data-end=\"2341\">metoda horizontalne ravnine<\/strong>, gdje se papirnati uzorak povla\u010di preko drugog lista pod kontroliranim uvjetima. Postavka uklju\u010duje:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Glatka, ravna probna plo\u010da (od metala, stakla ili plastike)<\/li>\n\n\n\n<li>A <strong data-start=\"2509\" data-end=\"2530\">standardizirana sanjka<\/strong> s kompresibilnom neoprenskom podlogom<\/li>\n\n\n\n<li>A <strong data-start=\"2574\" data-end=\"2600\">ure\u0111aj za mjerenje sile<\/strong> (kao optere\u0107na \u0107elija)<\/li>\n\n\n\n<li>Sustav gibanja konstantne brzine (obi\u010dno 150 \u00b1 30 mm\/min)<\/li>\n<\/ul>\n\n\n\n<p>Test se provodi u oba <strong data-start=\"2714\" data-end=\"2740\">smjer stroja (MD)<\/strong> i <strong data-start=\"2745\" data-end=\"2777\">popre\u010dno u odnosu na smjer stroja<\/strong> Koriste\u0107i pa\u017eljivo pripremljene uzorke. Mjerenja bilje\u017ee po\u010detni otpor (statik COF) i odr\u017eano kretanje (kineti\u010dki COF).<\/p>\n\n\n\n<p>TAPPI T549 se razlikuje od drugih metoda poput TAPPI T815, koja mjeri koeficijent trenja (COF) ambala\u017enih materijala na nagnutoj ravnini. Usredoto\u010duju\u0107i se na pona\u0161anje ravnog lista i klizanja pri prvom kontaktu, T549 pru\u017ea precizne podatke za <strong data-start=\"3124\" data-end=\"3150\">primjene s hranjenjem listovima<\/strong>.<\/p>\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=\"FPT-01 tester trenja i ljepljive \u010dvrsto\u0107e s funkcijom koeficijenta trenja\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/QpwY4XRM9JI?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<h2 class=\"wp-block-heading\">Osnove pripreme uzoraka i postupka ispitivanja<\/h2>\n\n\n\n<p>Prema TAPPI T549, pomna priprema uzoraka je klju\u010dna. Listovi moraju biti:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Preduslovljeno i kondicionirano prema TAPPI T402<\/li>\n\n\n\n<li>Re\u017eite precizno kako biste izbjegli o\u0161te\u0107enje rubova (preporu\u010dene dimenzije: 100\u00d7215 mm i 75\u00d7130 mm)<\/li>\n\n\n\n<li>Poravnati u ispravnim MD ili CD orijentacijama tijekom testiranja<\/li>\n<\/ul>\n\n\n\n<p>Tijekom testiranja, <strong data-start=\"4357\" data-end=\"4387\">Saonica se mora nje\u017eno polo\u017eiti<\/strong> bez bo\u010dnog pomaka. Sila povla\u010denja bilje\u017ei se odmah pri pokretanju kretanja (za stati\u010dki COF), a zatim se prosje\u010di preko pomaka od 130 mm za kineti\u010dki COF.<\/p>\n\n\n\n<p>Trebalo bi paziti da se izbjegnu vibracije ili rastezanje u spojnom kabelu, \u0161to mo\u017ee iskriviti rezultate. <strong data-start=\"4659\" data-end=\"4669\">FPT-01<\/strong> rje\u0161ava ove izazove stabiliziranom konstrukcijom i tehnologijom preciznog o\u010ditavanja optere\u0107enja.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Primjene i poslovna vrijednost<\/h2>\n\n\n\n<p>Pouzdani COF podaci osiguravaju dosljednost <strong data-start=\"4846\" data-end=\"4863\">hrana listova<\/strong>, bolje <strong data-start=\"4872\" data-end=\"4892\">u\u010dinkovitost pre\u0161e<\/strong>, i <strong data-start=\"4898\" data-end=\"4923\">smanjen otpad od proizvoda<\/strong>. Za osoblje za kontrolu kvalitete i razvijatelje papirnatih proizvoda, TAPPI T549 omogu\u0107uje:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Usporedba povr\u0161inskih tretmana (npr. kalendiranje, premazivanje)<\/li>\n\n\n\n<li>Procjena uniformnosti serije<\/li>\n\n\n\n<li>Uspore\u0111ivanje s industrijskim standardima<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Odabir pravog tester frikcijskog lju\u0161tenja<\/h2>\n\n\n\n<p>Kako bi se udovoljilo TAPPI T549 i osigurala visoka reproducibilnost, neophodan je robusan i osjetljiv sustav za testiranje. <a href=\"https:\/\/www.packqc.com\/hr\/product\/sale-friction-peel-tester-manufacturer\/\">FPT-01<\/a> Friction Peel Tester tvrtke Cell Instruments dizajniran je da zadovolji ove potrebe. Nudi:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Visokoprecizni senzori sile s brzim vremenom odziva<\/li>\n\n\n\n<li>Prilagodljive opcije mase i povr\u0161ine sanjki u skladu s TAPPI T549<\/li>\n\n\n\n<li>Jednolika kontrola brzine klizanja s minimalnim vibracijama<\/li>\n\n\n\n<li>Prikaz podataka u stvarnom vremenu i ugra\u0111eni izra\u010duni COF-a (statika i kinematika)<\/li>\n\n\n\n<li>Korisni\u010dki prilago\u0111eno su\u010delje softvera i opcionalne funkcije izvoza podataka<\/li>\n<\/ul>\n\n\n\n<p>Kori\u0161tenjem FPT-01 testa za koeficijent trenja proizvo\u0111a\u010di i prera\u0111iva\u010di papira mogu pouzdano provoditi mjerenje koeficijenta trenja papira u skladu s TAPPI standardima, smanjuju\u0107i ljudske pogre\u0161ke i pove\u0107avaju\u0107i u\u010dinkovitost laboratorija.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Kontaktirajte nas i nabavite rje\u0161enje za ispitivanje TAPPI T549 D1709 <\/h2>\n\n\n\n<p><strong data-start=\"5424\" data-end=\"5438\">TAPPI T549<\/strong> pru\u017ea kriti\u010dnu mjeru za procjenu <strong data-start=\"5488\" data-end=\"5519\">statik i kineti\u010dki trenje<\/strong> od nepremazanog papira za tisak i pisanje. Omogu\u0107uje proizvo\u0111a\u010dima fino pode\u0161avanje performansi proizvoda, pobolj\u0161anje u\u010dinkovitosti proizvodnje i zadovoljavanje o\u010dekivanja krajnjih korisnika. S Cell Instruments\u2019 <strong data-start=\"5705\" data-end=\"5726\">FPT-01 tester za ka\u0161alj<\/strong>, organizacije dobivaju pouzdano rje\u0161enje uskla\u0111eno sa standardima za <strong data-start=\"5792\" data-end=\"5837\">Mjerenje koeficijenta trenja papira<\/strong> koji osigurava visoku to\u010dnost i ponovljivost.<\/p>\n\n\n\n<p>Integriranjem <strong data-start=\"5154\" data-end=\"5203\"><a href=\"https:\/\/www.packqc.com\/hr\/\">Stani\u010dni instrumenti<\/a>\u2018FPT-01 tester lju\u0161tenja trenjem<\/strong>, laboratoriji dobivaju pouzdanu platformu za implementaciju <a href=\"https:\/\/www.tappi.org\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">TAPPI <\/a>T549 precizno i u\u010dinkovito, \u0161to ga \u010dini idealnim za upotrebu u <strong data-start=\"5324\" data-end=\"5399\">Laboratoriji za istra\u017eivanje i razvoj, odjeli kontrole kvalitete i agencije za testiranje tre\u0107ih strana<\/strong>.<\/p>","protected":false},"excerpt":{"rendered":"<p>Za\u0161to je mjerenje koeficijenta trenja papira va\u017eno   Povr\u0161ine papira dinami\u010dki stupaju u interakciju tijekom procesa proizvodnje i primjene. Stati\u010dki koeficijent trenja mjeri silu potrebnu za pokretanje klizanja izme\u0111u dva lista, dok se kineti\u010dki koeficijent trenja odnosi na silu potrebnu za odr\u017eavanje kretanja pri konstantnoj brzini. Previ\u0161e klizav papir mo\u017ee dovesti do pogre\u0161nog uvla\u010denja, [\u2026]<\/p>","protected":false},"featured_media":6415,"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":[615],"class_list":["post-9848","standard","type-standard","status-publish","has-post-thumbnail","hentry","standard-category-tappi"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.packqc.com\/hr\/wp-json\/wp\/v2\/standard\/9848","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.packqc.com\/hr\/wp-json\/wp\/v2\/standard"}],"about":[{"href":"https:\/\/www.packqc.com\/hr\/wp-json\/wp\/v2\/types\/standard"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.packqc.com\/hr\/wp-json\/wp\/v2\/media\/6415"}],"wp:attachment":[{"href":"https:\/\/www.packqc.com\/hr\/wp-json\/wp\/v2\/media?parent=9848"}],"wp:term":[{"taxonomy":"standard-category","embeddable":true,"href":"https:\/\/www.packqc.com\/hr\/wp-json\/wp\/v2\/standard-category?post=9848"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}