{"id":8023,"date":"2026-07-23T13:46:10","date_gmt":"2026-07-23T05:46:10","guid":{"rendered":"https:\/\/www.qualitester.com\/?page_id=8023"},"modified":"2026-07-23T13:46:10","modified_gmt":"2026-07-23T05:46:10","slug":"tappi-t549","status":"publish","type":"page","link":"https:\/\/www.qualitester.com\/cs\/standards\/tappi-t549\/","title":{"rendered":"TAPPI T549"},"content":{"rendered":"<p>Vlastnosti povrchov\u00e9ho t\u0159en\u00ed pap\u00edru maj\u00ed p\u0159\u00edm\u00fd vliv na efektivitu tisku, v\u00fdkon kop\u00edrovac\u00edch za\u0159\u00edzen\u00ed, pod\u00e1v\u00e1n\u00ed list\u016f, stabilitu stohov\u00e1n\u00ed a celkovou kvalitu v\u00fdrobku. <strong>TAPPI T549<\/strong> jedn\u00e1 se o mezin\u00e1rodn\u011b uzn\u00e1vanou zku\u0161ebn\u00ed metodu pro stanoven\u00ed statick\u00e9ho a kinetick\u00e9ho koeficientu t\u0159en\u00ed nepota\u017een\u00e9ho psac\u00edho a tiskov\u00e9ho pap\u00edru pomoc\u00ed metody s vodorovnou rovinou. Poskytnut\u00edm standardizovan\u00fdch <strong>m\u011b\u0159en\u00ed koeficientu t\u0159en\u00ed<\/strong>, <strong>TAPPI T549<\/strong> umo\u017e\u0148uje v\u00fdrobc\u016fm pap\u00edru, zpracovatel\u016fm, tisk\u00e1rn\u00e1m a laborato\u0159\u00edm pro kontrolu kvality konzistentn\u011b a objektivn\u011b hodnotit vlastnosti povrchu.<\/p>\n<p>Na rozd\u00edl od norem t\u00fdkaj\u00edc\u00edch se t\u0159en\u00ed obal\u016f, kter\u00e9 se \u010dasto zam\u011b\u0159uj\u00ed na chov\u00e1n\u00ed p\u0159i v\u00edcen\u00e1sobn\u00e9m sklouznut\u00ed nebo na zkou\u0161ky na \u0161ikm\u00e9 rovin\u011b, <strong>TAPPI T549<\/strong> m\u011b\u0159\u00ed odpor mezi dv\u011bma pap\u00edrov\u00fdmi povrchy p\u0159i prvn\u00edm posunut\u00ed, d\u00edky \u010demu\u017e je obzvl\u00e1\u0161t\u011b vhodn\u00fd pro <strong>Zkou\u0161ka COF u nepota\u017een\u00e9ho psac\u00edho a tiskov\u00e9ho pap\u00edru<\/strong> pou\u017e\u00edv\u00e1 se v tiskov\u00fdch stroj\u00edch, kop\u00edrk\u00e1ch a dal\u0161\u00edch za\u0159\u00edzen\u00edch s listov\u00fdm pod\u00e1v\u00e1n\u00edm. Porozum\u011bn\u00ed t\u011bmto v\u00fdsledk\u016fm pom\u00e1h\u00e1 v\u00fdrobc\u016fm optimalizovat v\u00fdrobu pap\u00edru, omezit probl\u00e9my s pod\u00e1v\u00e1n\u00edm a zv\u00fd\u0161it spokojenost z\u00e1kazn\u00edk\u016f d\u00edky lep\u0161\u00ed konzistenci v\u00fdrobk\u016f.<\/p>\n<h2>Pro\u010d je norma TAPPI T549 d\u016fle\u017eit\u00e1?<\/h2>\n<p>T\u0159en\u00ed pap\u00edru b\u00fdv\u00e1 \u010dasto p\u0159ehl\u00ed\u017eeno, dokud nedojde k probl\u00e9m\u016fm ve v\u00fdrob\u011b. \u0160patn\u00e9 t\u0159en\u00ed m\u016f\u017ee v\u00e9st k pod\u00e1v\u00e1n\u00ed dvojit\u00fdch list\u016f, zasek\u00e1v\u00e1n\u00ed pap\u00edru, nespr\u00e1vn\u00e9mu zarovn\u00e1n\u00ed b\u011bhem tisku, nadm\u011brn\u00fdm prostoj\u016fm nebo sn\u00ed\u017een\u00ed rychlosti v\u00fdroby.<\/p>\n<p>\u00da\u010delem <strong>TAPPI T549<\/strong> je kvantifikovat t\u0159ec\u00ed odpor mezi dv\u011bma pap\u00edrov\u00fdmi povrchy za kontrolovan\u00fdch laboratorn\u00edch podm\u00ednek. Z\u00edskan\u00e9 \u00fadaje umo\u017e\u0148uj\u00ed v\u00fdrobc\u016fm:<\/p>\n<ul>\n<li><strong>P\u0159esn\u011b ur\u010dete koeficient t\u0159en\u00ed pap\u00edru<\/strong><\/li>\n<li>Zaji\u0161\u0165ovat st\u00e1lou kvalitu v\u00fdrobk\u016f nap\u0159\u00ed\u010d jednotliv\u00fdmi v\u00fdrobn\u00edmi \u0161ar\u017eemi<\/li>\n<li>Optimalizace povrchov\u00fdch \u00faprav a povlak\u016f pap\u00edru<\/li>\n<li>Zlep\u0161ete v\u00fdkon p\u0159i tisku a pod\u00e1v\u00e1n\u00ed dokument\u016f do kop\u00edrky<\/li>\n<li>Porovnejte r\u016fzn\u00e9 druhy pap\u00edru b\u011bhem v\u00fdvoje produktu<\/li>\n<li>Podpora p\u0159i kvalifikaci dodavatel\u016f a kontrole p\u0159\u00edchoz\u00edch materi\u00e1l\u016f<\/li>\n<li>Pro\u0161et\u0159it st\u00ed\u017enosti z\u00e1kazn\u00edk\u016f t\u00fdkaj\u00edc\u00ed se v\u00fdkonu pod\u00e1v\u00e1n\u00ed nebo stohov\u00e1n\u00ed<\/li>\n<\/ul>\n<p>Pro v\u00fdrobce pap\u00edru p\u0159edstavuj\u00ed \u00fadaje o t\u0159en\u00ed d\u016fle\u017eit\u00fd parametr kontroly kvality, a to vedle plo\u0161n\u00e9 hmotnosti, hladkosti, tlou\u0161\u0165ky, pevnosti v tahu a drsnosti povrchu.<\/p>\n<h2>Porozum\u011bn\u00ed statick\u00e9mu a kinetick\u00e9mu koeficientu t\u0159en\u00ed<\/h2>\n<p>Na str\u00e1nk\u00e1ch <strong>m\u011b\u0159en\u00ed koeficientu t\u0159en\u00ed<\/strong> definov\u00e1no jako <strong>TAPPI T549<\/strong> obsahuje dv\u011b nez\u00e1visl\u00e9 hodnoty.<\/p>\n<table>\n<thead>\n<tr>\n<th>T\u0159ec\u00ed vlastnosti<\/th>\n<th>Definice<\/th>\n<th>Pr\u016fmyslov\u00fd v\u00fdznam<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>Statick\u00fd koeficient t\u0159en\u00ed (COF)<\/strong><\/td>\n<td>S\u00edla pot\u0159ebn\u00e1 k zah\u00e1jen\u00ed pohybu mezi dv\u011bma pap\u00edrov\u00fdmi plochami<\/td>\n<td>Ovliv\u0148uje sb\u011br list\u016f, odd\u011blen\u00ed stoh\u016f a prevenci dvojit\u00e9ho pod\u00e1n\u00ed<\/td>\n<\/tr>\n<tr>\n<td><strong>Kinetick\u00fd koeficient t\u0159en\u00ed (COF)<\/strong><\/td>\n<td>S\u00edla pot\u0159ebn\u00e1 k udr\u017een\u00ed plynul\u00e9ho klouz\u00e1n\u00ed<\/td>\n<td>Ovliv\u0148uje plynul\u00fd transport list\u016f v tisk\u00e1rn\u00e1ch a kop\u00edrk\u00e1ch<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Statick\u00e9 t\u0159en\u00ed je obvykle v\u011bt\u0161\u00ed ne\u017e kinetick\u00e9 t\u0159en\u00ed, proto\u017ee k p\u0159ekon\u00e1n\u00ed po\u010d\u00e1te\u010dn\u00ed adheze mezi st\u00fdkaj\u00edc\u00edmi se povrchy je zapot\u0159eb\u00ed dodate\u010dn\u00e1 s\u00edla.<\/p>\n<p>Ob\u011b hodnoty jsou kl\u00ed\u010dov\u00e9, proto\u017ee modern\u00ed tiskov\u00e1 za\u0159\u00edzen\u00ed mus\u00ed nejprve odd\u011blit jednotliv\u00e9 listy a pot\u00e9 je plynule dopravit p\u0159es n\u011bkolik v\u00e1lc\u016f, ani\u017e by doch\u00e1zelo k prokluzov\u00e1n\u00ed nebo slepov\u00e1n\u00ed.<\/p>\n<h2>Princip m\u011b\u0159en\u00ed podle normy TAPPI T549<\/h2>\n<p>Na str\u00e1nk\u00e1ch <strong>TAPPI T549<\/strong> tato metoda pou\u017e\u00edv\u00e1 <strong>metoda zkou\u0161en\u00ed t\u0159en\u00ed v horizont\u00e1ln\u00ed rovin\u011b<\/strong> k ur\u010den\u00ed odporu, kter\u00fd vznik\u00e1 p\u0159i klouz\u00e1n\u00ed jednoho listu pap\u00edru po druh\u00e9m.<\/p>\n<p>Jeden exempl\u00e1\u0159<\/p>\n<p>Prvn\u00ed vzorek je upevn\u011bn na tuh\u00e9 vodorovn\u00e9 plo\u0161in\u011b, zat\u00edmco druh\u00fd vzorek je p\u0159ipevn\u011bn ke standardizovan\u00e9mu san\u00edm. Mechanick\u00fd pohon pohybuje san\u011bmi po stacion\u00e1rn\u00edm vzorku konstantn\u00ed rychlost\u00ed, p\u0159i\u010dem\u017e sn\u00edma\u010d zat\u00ed\u017een\u00ed pr\u016fb\u011b\u017en\u011b zaznamen\u00e1v\u00e1 t\u0159ec\u00ed s\u00edlu.<\/p>\n<p>Koeficient t\u0159en\u00ed se vypo\u010d\u00edt\u00e1 podle n\u00e1sleduj\u00edc\u00edho vzorce:<\/p>\n<p><strong>\u03bc = F \/ N<\/strong><\/p>\n<p>Kde:<\/p>\n<ul>\n<li><strong>\u03bc<\/strong> = Koeficient t\u0159en\u00ed<\/li>\n<li><strong>F<\/strong> = Nam\u011b\u0159en\u00e1 t\u0159ec\u00ed s\u00edla<\/li>\n<li><strong>N<\/strong> = Norm\u00e1lov\u00e1 s\u00edla vyvolan\u00e1 hmotnost\u00ed san\u00ed<\/li>\n<\/ul>\n<p>Proto\u017ee t<\/p>\n<p>Koeficient je pom\u011br dvou sil, je bezrozm\u011brn\u00fd.<\/p>\n<p>Tato metoda p\u0159\u00edmo m\u011b\u0159\u00ed:<\/p>\n<ul>\n<li>Po\u010d\u00e1te\u010dn\u00ed \u0161pi\u010dkov\u00e1 s\u00edla (statick\u00fd koeficient t\u0159en\u00ed)<\/li>\n<li>Pr\u016fm\u011brn\u00e1 kluzn\u00e1 s\u00edla (kinetick\u00fd koeficient t\u0159en\u00ed)<\/li>\n<\/ul>\n<p>Tento p\u0159\u00edstup zalo\u017een\u00fd na horizont\u00e1ln\u00ed rovin\u011b zaji\u0161\u0165uje vysokou opakovatelnost <strong>metody zkou\u0161en\u00ed t\u0159en\u00ed<\/strong> vhodn\u00e9 pro kontrolu kvality v laborato\u0159i.<\/p>\n<h2 style=\"font-style: normal;\"><img fetchpriority=\"high\" decoding=\"async\" class=\"alignleft wp-image-8026 size-medium\" style=\"font-size: 16px; font-weight: inherit;\" src=\"https:\/\/www.qualitester.com\/wp-content\/uploads\/2026\/07\/COF-01-Coefficient-of-Friction-Tester-1-300x300.webp\" alt=\"Zku\u0161ebn\u00ed stroj TAPPI T549 COF-01cof\" width=\"300\" height=\"300\" srcset=\"https:\/\/www.qualitester.com\/wp-content\/uploads\/2026\/07\/COF-01-Coefficient-of-Friction-Tester-1-300x300.webp 300w, https:\/\/www.qualitester.com\/wp-content\/uploads\/2026\/07\/COF-01-Coefficient-of-Friction-Tester-1-150x150.webp 150w, https:\/\/www.qualitester.com\/wp-content\/uploads\/2026\/07\/COF-01-Coefficient-of-Friction-Tester-1-12x12.webp 12w, https:\/\/www.qualitester.com\/wp-content\/uploads\/2026\/07\/COF-01-Coefficient-of-Friction-Tester-1-100x100.webp 100w, https:\/\/www.qualitester.com\/wp-content\/uploads\/2026\/07\/COF-01-Coefficient-of-Friction-Tester-1.webp 600w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/h2>\n<h2>Po\u017eadovan\u00e9 zku\u0161ebn\u00ed za\u0159\u00edzen\u00ed<\/h2>\n<p>Vystupov\u00e1n\u00ed <strong>Zkou\u0161ka COF u nepota\u017een\u00e9ho psac\u00edho a tiskov\u00e9ho pap\u00edru<\/strong> vy\u017eaduje n\u011bkolik z\u00e1kladn\u00edch komponent.<\/p>\n<table>\n<thead>\n<tr>\n<th>Vybaven\u00ed<\/th>\n<th>Funkce<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"text-align: center;\">Horizont\u00e1ln\u00ed zku\u0161ebn\u00ed plo\u0161ina<\/td>\n<td style=\"text-align: center;\">Podp\u00edr\u00e1 spodn\u00ed \u010d\u00e1st vzorku<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\">Standardn\u00ed z\u00e1va\u017e\u00ed (200 \u00b1 5 g)<\/td>\n<td style=\"text-align: center;\">P\u016fsob\u00ed norm\u00e1lovou s\u00edlu<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\">P\u0159esn\u00fd sn\u00edma\u010d zat\u00ed\u017een\u00ed<\/td>\n<td style=\"text-align: center;\">M\u011b\u0159\u00ed t\u0159ec\u00ed s\u00edlu<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\">Pohon s konstantn\u00edmi ot\u00e1\u010dkami<\/td>\n<td style=\"text-align: center;\">Pohybuje san\u011bmi kontrolovanou rychlost\u00ed<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\">Syst\u00e9m sb\u011bru dat<\/td>\n<td style=\"text-align: center;\">Vypo\u010d\u00edt\u00e1v\u00e1 statick\u00fd a kinetick\u00fd koeficient t\u0159en\u00ed (COF)<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\">\u0158eza\u010dka vzork\u016f<\/td>\n<td style=\"text-align: center;\">Vytv\u00e1\u0159\u00ed konzistentn\u00ed zku\u0161ebn\u00ed vzorky<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Podle <strong>TAPPI T549<\/strong>, s\u00e1n\u011b o rozm\u011brech p\u0159ibli\u017en\u011b <strong>63,5 mm \u00d7 63,5 mm<\/strong> s hmotnost\u00ed <strong>200 \u00b1 5 g<\/strong> zaji\u0161\u0165uje standardizovan\u00e9 testovac\u00ed podm\u00ednky. San\u011b se pohybuj\u00ed rychlost\u00ed p\u0159ibli\u017en\u011b <strong>150 \u00b1 30 mm\/min<\/strong>, \u010d\u00edm\u017e se zajist\u00ed jednotnost <strong>m\u011b\u0159en\u00ed koeficientu t\u0159en\u00ed<\/strong> v r\u016fzn\u00fdch laborato\u0159\u00edch.<\/p>\n<h2>Postup testov\u00e1n\u00ed krok za krokem<\/h2>\n<p>A\u010dkoli si laborato\u0159e mohou stanovit vlastn\u00ed pracovn\u00ed pokyny, obecn\u011b plat\u00ed, \u017ee <strong>TAPPI T549<\/strong> Pracovn\u00ed postup zahrnuje n\u00e1sleduj\u00edc\u00ed f\u00e1ze.<\/p>\n<h3>\u00daprava vzork\u016f<\/h3>\n<p>Pap\u00edrov\u00e9 vzorky by m\u011bly b\u00fdt p\u0159ed zkou\u0161kou kondicionov\u00e1ny za standardizovan\u00fdch laboratorn\u00edch teplotn\u00edch a vlhkostn\u00edch podm\u00ednek. Spr\u00e1vn\u00e1 kondicionace minimalizuje vliv vlhkosti na t\u0159ec\u00ed vlastnosti.<\/p>\n<h3>P\u0159\u00edprava vzork\u016f<\/h3>\n<p>Vzorky se \u0159ezaj\u00ed podle po\u017eadovan\u00fdch rozm\u011br\u016f tak, aby byla zachov\u00e1na orientace ve sm\u011bru stroje i nap\u0159\u00ed\u010d strojem.<\/p>\n<p>Pe\u010dliv\u00e9 \u0159ez\u00e1n\u00ed je d\u016fle\u017eit\u00e9, proto\u017ee po\u0161kozen\u00e9 okraje mohou ovlivnit opakovatelnost testu.<\/p>\n<h3>Nastaven\u00ed n\u00e1stroje<\/h3>\n<p>Oper\u00e1tor ov\u011b\u0159\u00ed:<\/p>\n<ul>\n<li>Testovac\u00ed rychlost<\/li>\n<li>Hmotnost san\u00ed<\/li>\n<li>Kalibrace s\u00edly<\/li>\n<li>Vodorovn\u00e9 vyrovn\u00e1n\u00ed<\/li>\n<li>Stav bez z\u00e1t\u011b\u017ee<\/li>\n<\/ul>\n<h3>Proveden\u00ed testu<\/h3>\n<p>Spodn\u00ed vzorek je upevn\u011bn k vodorovn\u00e9 plo\u0161in\u011b.<\/p>\n<p>Horn\u00ed vzorek se um\u00edst\u00ed pod san\u011b.<\/p>\n<p>S\u00e1\u0148ky se za\u010dnou pohybovat bez n\u00e1raz\u016f a vibrac\u00ed, zat\u00edmco sn\u00edma\u010d s\u00edly nep\u0159etr\u017eit\u011b zaznamen\u00e1v\u00e1 t\u0159ec\u00ed s\u00edlu.<\/p>\n<p>Nejvy\u0161\u0161\u00ed po\u010d\u00e1te\u010dn\u00ed s\u00edla p\u0159edstavuje <strong>statick\u00fd koeficient t\u0159en\u00ed<\/strong>, zat\u00edmco pr\u016fm\u011brn\u00e1 s\u00edla klouz\u00e1n\u00ed po stanoven\u00e9 dr\u00e1ze p\u0159edstavuje <strong>kinetick\u00fd koeficient t\u0159en\u00ed<\/strong>.<\/p>\n<h3>Anal\u00fdza dat<\/h3>\n<p>Nejmodern\u011bj\u0161\u00ed <strong>za\u0159\u00edzen\u00ed pro zkou\u0161en\u00ed t\u0159en\u00ed<\/strong> syst\u00e9my automaticky vypo\u010d\u00edtaj\u00ed:<\/p>\n<ul>\n<li>Statick\u00fd koeficient t\u0159en\u00ed (COF)<\/li>\n<li>Kinetick\u00fd koeficient t\u0159en\u00ed (COF)<\/li>\n<li>Pr\u016fm\u011brn\u00e1 hodnota<\/li>\n<li>Maxim\u00e1ln\u00ed hodnota<\/li>\n<li>Sm\u011brodatn\u00e1 odchylka<\/li>\n<li>Zku\u0161ebn\u00ed k\u0159ivky<\/li>\n<\/ul>\n<p>Tyto digit\u00e1ln\u00ed zpr\u00e1vy zjednodu\u0161uj\u00ed dokumentaci kvality a sledov\u00e1n\u00ed proces\u016f.<\/p>\n<h2>Faktory ovliv\u0148uj\u00edc\u00ed v\u00fdsledky m\u011b\u0159en\u00ed t\u0159en\u00ed<\/h2>\n<p>Chov\u00e1n\u00ed t\u0159en\u00ed m\u016f\u017ee v\u00fdznamn\u011b ovlivnit n\u011bkolik prom\u011bnn\u00fdch.<\/p>\n<h3>Drsnost povrchu<\/h3>\n<p>Hrub\u00e9 povrchy obecn\u011b zvy\u0161uj\u00ed mechanick\u00e9 vz\u00e1jemn\u00e9 zakousnut\u00ed, co\u017e vede k vy\u0161\u0161\u00edm hodnot\u00e1m t\u0159en\u00ed.<\/p>\n<h3>Obsah vlhkosti<\/h3>\n<p>Pap\u00edr snadno absorbuje vlhkost, \u010d\u00edm\u017e se m\u011bn\u00ed pru\u017enost vl\u00e1ken a p\u0159ilnavost povrchu.<\/p>\n<h3>Slo\u017een\u00ed vl\u00e1ken<\/h3>\n<p>Na koeficient t\u0159en\u00ed maj\u00ed vliv jak panensk\u00e1 vl\u00e1kna, tak recyklovan\u00e1 vl\u00e1kna, plniva i kl\u00ed\u017eidla.<\/p>\n<h3>Povrchov\u00e1 \u00faprava<\/h3>\n<p>Kalandrov\u00e1n\u00ed, le\u0161t\u011bn\u00ed a povrchov\u00e9 \u00fapravy m\u011bn\u00ed hladkost povrchu a t\u00edm ovliv\u0148uj\u00ed t\u0159en\u00ed.<\/p>\n<h3>Tiskov\u00e9 \u00fapravy<\/h3>\n<p>Kryc\u00ed schopnost inkoustu, laky a speci\u00e1ln\u00ed povlaky mohou odpor klouz\u00e1n\u00ed bu\u010f zv\u00fd\u0161it, nebo sn\u00ed\u017eit.<\/p>\n<h3>Podm\u00ednky prost\u0159ed\u00ed<\/h3>\n<p>Teplota a vlhkost by m\u011bly b\u00fdt b\u011bhem cel\u00e9ho testov\u00e1n\u00ed udr\u017eov\u00e1ny na stanoven\u00fdch hodnot\u00e1ch, aby byla zaji\u0161t\u011bna spolehlivost <strong>m\u011b\u0159en\u00ed koeficientu t\u0159en\u00ed<\/strong>.<\/p>\n<h2>Aplikace nap\u0159\u00ed\u010d odv\u011btv\u00edmi<\/h2>\n<p>A\u010dkoli <strong>TAPPI T549<\/strong> A\u010dkoli se zam\u011b\u0159uje na pap\u00edr pro psan\u00ed a tisk, principy testov\u00e1n\u00ed maj\u00ed \u0161irok\u00e9 uplatn\u011bn\u00ed v mnoha odv\u011btv\u00edch.<\/p>\n<h3>Polygrafick\u00fd pr\u016fmysl<\/h3>\n<ul>\n<li>Ofsetov\u00fd tisk<\/li>\n<li>Digit\u00e1ln\u00ed tisk<\/li>\n<li>Komer\u010dn\u00ed tisk<\/li>\n<li>Vyd\u00e1v\u00e1n\u00ed knih<\/li>\n<\/ul>\n<p>Spolehliv\u00e9 t\u0159en\u00ed minimalizuje dvojit\u00fd pod\u00e1v, a t\u00edm zlep\u0161uje transport list\u016f.<\/p>\n<h3>V\u00fdroba kancel\u00e1\u0159sk\u00e9ho pap\u00edru<\/h3>\n<p>Kop\u00edrovac\u00ed pap\u00edr a pap\u00edr do tisk\u00e1ren mus\u00ed m\u00edt pe\u010dliv\u011b kontrolovan\u00e9 t\u0159ec\u00ed vlastnosti, aby vyhovovaly po\u017eadavk\u016fm vysokorychlostn\u00edch kancel\u00e1\u0159sk\u00fdch za\u0159\u00edzen\u00ed.<\/p>\n<h3>Zpracov\u00e1n\u00ed pap\u00edru<\/h3>\n<p>V\u00fdrobci pap\u00edrov\u00fdch v\u00fdrobk\u016f posuzuj\u00ed t\u0159en\u00ed po nanesen\u00ed povlaku, ra\u017eb\u011b, laminov\u00e1n\u00ed nebo povrchov\u00e9 \u00faprav\u011b.<\/p>\n<h3>Laborato\u0159e kontroly kvality<\/h3>\n<p>Rutina <strong>Zkou\u0161ka COF u nepota\u017een\u00e9ho psac\u00edho a tiskov\u00e9ho pap\u00edru<\/strong> zaji\u0161\u0165uje konzistenci mezi jednotliv\u00fdmi \u0161ar\u017eemi.<\/p>\n<h3>V\u00fdzkum a v\u00fdvoj<\/h3>\n<p>V\u00fdvoj\u00e1\u0159i produkt\u016f porovn\u00e1vaj\u00ed nov\u00e9 slo\u017een\u00ed, plniva, povrchov\u00e9 \u00fapravy a v\u00fdrobn\u00ed procesy pomoc\u00ed standardizovan\u00fdch <strong>metody zkou\u0161en\u00ed t\u0159en\u00ed<\/strong>.<\/p>\n<h2>Norma TAPPI T549 ve srovn\u00e1n\u00ed s jin\u00fdmi normami pro m\u011b\u0159en\u00ed t\u0159en\u00ed<\/h2>\n<p>R\u016fzn\u00e9 normy pro m\u011b\u0159en\u00ed t\u0159en\u00ed se vztahuj\u00ed na r\u016fzn\u00e9 materi\u00e1ly a slou\u017e\u00ed k r\u016fzn\u00fdm \u00fa\u010del\u016fm zkou\u0161ek.<\/p>\n<table>\n<thead>\n<tr>\n<th>Standardn\u00ed<\/th>\n<th>Hlavn\u00ed materi\u00e1l<\/th>\n<th>Typick\u00e9 pou\u017eit\u00ed<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"text-align: center;\"><strong>TAPPI T549<\/strong><\/td>\n<td style=\"text-align: center;\">Nepota\u017een\u00fd pap\u00edr pro psan\u00ed a tisk<\/td>\n<td style=\"text-align: center;\">Pod\u00e1v\u00e1n\u00ed pap\u00edru a tiskov\u00fd v\u00fdkon<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\">TAPPI T815<\/td>\n<td style=\"text-align: center;\">Balic\u00ed pap\u00edr a lepenka<\/td>\n<td style=\"text-align: center;\">Statick\u00e9 t\u0159en\u00ed na naklon\u011bn\u00e9 rovin\u011b<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\">TAPPI T816<\/td>\n<td style=\"text-align: center;\">Vlnit\u00e1 lepenka<\/td>\n<td style=\"text-align: center;\">Vyhodnocen\u00ed statick\u00e9ho t\u0159en\u00ed<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\"><a href=\"https:\/\/www.qualitester.com\/cs\/standards\/astm-d1894\/\" target=\"_blank\" rel=\"noopener\">ASTM D1894<\/a><\/td>\n<td style=\"text-align: center;\">Plastov\u00e9 f\u00f3lie<\/td>\n<td style=\"text-align: center;\">Statick\u00fd a kinetick\u00fd koeficient t\u0159en\u00ed (COF)<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\">ISO 8295<\/td>\n<td style=\"text-align: center;\">Plastov\u00e1 f\u00f3lie<\/td>\n<td style=\"text-align: center;\">Kontrola kvality<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\">GB\/T 10006<\/td>\n<td style=\"text-align: center;\">Obalov\u00e9 materi\u00e1ly<\/td>\n<td style=\"text-align: center;\">Statick\u00e9 a kinetick\u00e9 t\u0159en\u00ed<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>V\u00fdb\u011br spr\u00e1vn\u00e9 normy zaji\u0161\u0165uje, \u017ee laboratorn\u00ed \u00fadaje p\u0159esn\u011b odr\u00e1\u017eej\u00ed skute\u010dn\u00e9 podm\u00ednky pou\u017eit\u00ed.<\/p>\n<h2>V\u00fdb\u011br za\u0159\u00edzen\u00ed pro zkou\u0161en\u00ed t\u0159en\u00ed<\/h2>\n<p>Ide\u00e1l <strong>za\u0159\u00edzen\u00ed pro zkou\u0161en\u00ed t\u0159en\u00ed<\/strong> m\u011blo by poskytovat reprodukovateln\u00e9 v\u00fdsledky a z\u00e1rove\u0148 podporovat \u0159adu mezin\u00e1rodn\u00edch norem.<\/p>\n<p>Mezi d\u016fle\u017eit\u00e1 v\u00fdb\u011brov\u00e1 krit\u00e9ria pat\u0159\u00ed:<\/p>\n<ul>\n<li><strong>Vysoce p\u0159esn\u00fd sn\u00edma\u010d zat\u00ed\u017een\u00ed<\/strong><\/li>\n<li><strong>Rovnom\u011brn\u00fd pohyb s konstantn\u00ed rychlost\u00ed<\/strong><\/li>\n<li><strong>Programovateln\u00e9 parametry testu<\/strong><\/li>\n<li><strong>Automatick\u00fd v\u00fdpo\u010det statick\u00e9ho a kinetick\u00e9ho koeficientu t\u0159en\u00ed (COF)<\/strong><\/li>\n<li><strong>Zobrazen\u00ed k\u0159ivky t\u0159en\u00ed v re\u00e1ln\u00e9m \u010dase<\/strong><\/li>\n<li><strong>Mo\u017enost exportu dat<\/strong><\/li>\n<li><strong>Shoda s v\u00edce normami<\/strong><\/li>\n<li><strong>Snadn\u00e1 kalibrace a \u00fadr\u017eba<\/strong><\/li>\n<\/ul>\n<p>Laborato\u0159e p\u016fsob\u00edc\u00ed v r\u016fzn\u00fdch pr\u016fmyslov\u00fdch odv\u011btv\u00edch \u010dasto vyu\u017e\u00edvaj\u00ed p\u0159\u00edstroje, kter\u00e9 umo\u017e\u0148uj\u00ed testov\u00e1n\u00ed pap\u00edru, f\u00f3li\u00ed, textili\u00ed, kompozit\u016f a obalov\u00fdch materi\u00e1l\u016f pomoc\u00ed vym\u011bniteln\u00fdch up\u00ednac\u00edch p\u0159\u00edpravk\u016f.<\/p>\n<h2>Zku\u0161ebn\u00ed stroj Cell Instruments COF-01 COF<\/h2>\n<p>Na str\u00e1nk\u00e1ch <a href=\"https:\/\/www.qualitester.com\/cs\/produkt-2\/coefficient-of-friction-tester-cof-01\/\"><strong>COF-01 Zku\u0161ebn\u00ed stroj COF<\/strong><\/a> od spole\u010dnosti Cell Instruments je ur\u010den k p\u0159esn\u00e9mu <strong>m\u011b\u0159en\u00ed koeficientu t\u0159en\u00ed<\/strong> na \u0161irokou \u0161k\u00e1lu materi\u00e1l\u016f, v\u010detn\u011b pap\u00edru, lepenky, pru\u017en\u00fdch f\u00f3li\u00ed, textili\u00ed, kompozit\u016f a speci\u00e1ln\u00edch povrch\u016f.<\/p>\n<p>Mezi hlavn\u00ed funkce pat\u0159\u00ed:<\/p>\n<ul>\n<li><strong>Zkou\u0161ky statick\u00e9ho a kinetick\u00e9ho koeficientu t\u0159en\u00ed (COF)<\/strong><\/li>\n<li><strong>Provoz \u0159\u00edzen\u00fd programovateln\u00fdm logick\u00fdm automatem (PLC) s dotykov\u00fdm rozhran\u00edm<\/strong><\/li>\n<li><strong>Vysoce p\u0159esn\u00fd krokov\u00fd motor a p\u0159evod s kuli\u010dkov\u00fdm \u0161roubem<\/strong><\/li>\n<li><strong>Automatick\u00fd sb\u011br dat a statistick\u00e1 anal\u00fdza<\/strong><\/li>\n<li><strong>Vysoce p\u0159esn\u00fd sn\u00edma\u010d zat\u00ed\u017een\u00ed 5 N<\/strong><\/li>\n<li><strong>Programovateln\u00e9 rychlosti testov\u00e1n\u00ed<\/strong><\/li>\n<li><strong>Shoda s normami ASTM D1894, ISO 8295, TAPPI T816, GB\/T 10006 a p\u0159izp\u016fsobiteln\u00e9 konfigurace pro zkou\u0161en\u00ed pap\u00edru na z\u00e1klad\u011b z\u00e1sad normy TAPPI T549<\/strong><\/li>\n<li><strong>Voliteln\u00e9 san\u011b na m\u00edru, v\u00edcejazy\u010dn\u00fd software, komunikace s PC, zkou\u0161ky odlupov\u00e1n\u00ed a speci\u00e1ln\u00ed up\u00ednac\u00ed p\u0159\u00edpravky<\/strong><\/li>\n<\/ul>\n<p>D\u00edky sv\u00e9 modul\u00e1rn\u00ed konstrukci je vhodn\u00fd pro v\u00fdzkumn\u00e9 laborato\u0159e, pap\u00edrny, v\u00fdrobce obal\u016f, univerzity a organizace zab\u00fdvaj\u00edc\u00ed se kontrolou kvality, kter\u00e9 hledaj\u00ed univerz\u00e1ln\u00ed \u0159e\u0161en\u00ed <strong>za\u0159\u00edzen\u00ed pro zkou\u0161en\u00ed t\u0159en\u00ed<\/strong> pro v\u00edce kategori\u00ed materi\u00e1l\u016f.<\/p>\n<h2>Osv\u011bd\u010den\u00e9 postupy pro dosa\u017een\u00ed spolehliv\u00fdch v\u00fdsledk\u016f<\/h2>\n<p>Pro zaji\u0161t\u011bn\u00ed co nejvy\u0161\u0161\u00ed opakovatelnosti p\u0159i prov\u00e1d\u011bn\u00ed <strong>TAPPI T549<\/strong> testov\u00e1n\u00ed:<\/p>\n<ul>\n<li><strong>Vzorky p\u0159ipravte za standardn\u00edch laboratorn\u00edch podm\u00ednek.<\/strong><\/li>\n<li><strong>Udr\u017eujte vzorky v \u010distot\u011b a chra\u0148te je p\u0159ed kontaminac\u00ed.<\/strong><\/li>\n<li><strong>Pravideln\u011b kontrolujte hmotnost san\u00ed a kalibraci s\u00edly.<\/strong><\/li>\n<li><strong>B\u011bhem testov\u00e1n\u00ed se vyhn\u011bte vibrac\u00edm.<\/strong><\/li>\n<li><strong>Prove\u010fte n\u011bkolik opakovan\u00fdch m\u011b\u0159en\u00ed.<\/strong><\/li>\n<li><strong>P\u0159i ka\u017ed\u00e9m testu zaznamen\u00e1vejte podm\u00ednky prost\u0159ed\u00ed.<\/strong><\/li>\n<li><strong>Pou\u017e\u00edvejte standardizovan\u00e9 postupy pro p\u0159\u00edpravu vzork\u016f.<\/strong><\/li>\n<\/ul>\n<p>Dodr\u017eov\u00e1n\u00ed t\u011bchto postup\u016f zvy\u0161uje konzistenci dat a posiluje d\u016fv\u011bru v rozhodnut\u00ed v r\u00e1mci kontroly kvality.<\/p>\n<h2>Z\u00e1v\u011br<\/h2>\n<p><strong>TAPPI T549<\/strong> poskytuje spolehlivou a standardizovanou metodu pro hodnocen\u00ed t\u0159ec\u00edch vlastnost\u00ed nepota\u017een\u00e9ho psac\u00edho a tiskov\u00e9ho pap\u00edru. D\u00edky p\u0159esn\u00e9mu stanoven\u00ed statick\u00e9ho i kinetick\u00e9ho koeficientu t\u0159en\u00ed mohou v\u00fdrobci zlep\u0161it pod\u00e1v\u00e1n\u00ed list\u016f, sn\u00ed\u017eit po\u010det tiskov\u00fdch vad, optimalizovat slo\u017een\u00ed pap\u00edru a zajistit st\u00e1lou kvalitu v\u00fdrobk\u016f. V kombinaci s modern\u00edm <strong>za\u0159\u00edzen\u00ed pro zkou\u0161en\u00ed t\u0159en\u00ed<\/strong>, <a href=\"https:\/\/www.tappi.org\/contentassets\/58af997fbe9b4f40a7545ee183554082\/2025\/t549-b-2-d-1-sarg.pdf\" target=\"_blank\" rel=\"noopener nofollow\">TAPPI T549<\/a> podporuje \u00fa\u010dinn\u00e9 zaji\u0161\u0165ov\u00e1n\u00ed kvality, optimalizaci proces\u016f, hodnocen\u00ed dodavatel\u016f a v\u00fdvoj produkt\u016f v pap\u00edrensk\u00e9m a polygrafick\u00e9m pr\u016fmyslu.<\/p>","protected":false},"excerpt":{"rendered":"<p>The surface friction characteristics of paper directly influence printing efficiency, copier performance, sheet feeding, stacking stability, and overall product quality. TAPPI T549 is the internationally recognized test method for evaluating the static and kinetic coefficient of friction of uncoated writing and printing paper using the horizontal plane method. By providing standardized coefficient of friction measurement, &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/www.qualitester.com\/cs\/standards\/tappi-t549\/\"> <span class=\"screen-reader-text\">TAPPI T549<\/span> Pokra\u010dovat ve \u010dten\u00ed \"<\/a><\/p>","protected":false},"author":9,"featured_media":8026,"parent":4948,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-global-header-display":"","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":"disabled","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","footnotes":""},"class_list":["post-8023","page","type-page","status-publish","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/www.qualitester.com\/cs\/wp-json\/wp\/v2\/pages\/8023","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.qualitester.com\/cs\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.qualitester.com\/cs\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.qualitester.com\/cs\/wp-json\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"https:\/\/www.qualitester.com\/cs\/wp-json\/wp\/v2\/comments?post=8023"}],"version-history":[{"count":5,"href":"https:\/\/www.qualitester.com\/cs\/wp-json\/wp\/v2\/pages\/8023\/revisions"}],"predecessor-version":[{"id":8085,"href":"https:\/\/www.qualitester.com\/cs\/wp-json\/wp\/v2\/pages\/8023\/revisions\/8085"}],"up":[{"embeddable":true,"href":"https:\/\/www.qualitester.com\/cs\/wp-json\/wp\/v2\/pages\/4948"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.qualitester.com\/cs\/wp-json\/wp\/v2\/media\/8026"}],"wp:attachment":[{"href":"https:\/\/www.qualitester.com\/cs\/wp-json\/wp\/v2\/media?parent=8023"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}