{"id":1425,"date":"2026-07-23T06:12:28","date_gmt":"2026-07-23T06:12:28","guid":{"rendered":"https:\/\/www.packtests.com\/?post_type=standard&#038;p=1425"},"modified":"2026-07-23T06:14:04","modified_gmt":"2026-07-23T06:14:04","slug":"astm-d1894","status":"publish","type":"standard","link":"https:\/\/www.packtests.com\/sk\/standard\/astm-d1894\/","title":{"rendered":"ASTM D1894"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Plastov\u00e9 f\u00f3lie zohr\u00e1vaj\u00fa k\u013e\u00fa\u010dov\u00fa \u00falohu v modernom balen\u00ed, od vrec\u00fa\u0161ok na potraviny a farmaceutick\u00fdch s\u00e1\u010dkov a\u017e po priemyseln\u00e9 vlo\u017eky a obaly spotrebn\u00e9ho tovaru. Jednou z najd\u00f4le\u017eitej\u0161\u00edch povrchov\u00fdch vlastnost\u00ed, ktor\u00e9 ovplyv\u0148uj\u00fa funk\u010dnos\u0165 obalu, je <strong>ASTM D1894<\/strong> koeficient trenia (COF). Nevhodn\u00e1 \u00farove\u0148 trenia m\u00f4\u017ee vies\u0165 k v\u00fdpadkom vo v\u00fdrobe, zlej obrobite\u013enosti, nestabiln\u00e9mu nalo\u017eeniu paliet alebo k neuspokojiv\u00e9mu z\u00e1\u017eitku spotrebite\u013ea.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V tomto \u010dl\u00e1nku sa vysvet\u013euje <strong>ASTM D1894<\/strong> z praktick\u00e9ho in\u017einierskeho h\u013eadiska, vr\u00e1tane \u00fa\u010delu <strong>sk\u00fa\u0161ka koeficientu trenia<\/strong>, z\u00e1sady testovania, pr\u00edpravu vzoriek, interpret\u00e1ciu v\u00fdsledkov a v\u00fdber zariaden\u00ed. Nech u\u017e ste v\u00fdrobca obalov, in\u017einier kontroly kvality, laborat\u00f3rny technik alebo v\u00fdvoj\u00e1r produktov, pochopenie <strong>ASTM D1894<\/strong> prispieva k zabezpe\u010deniu stabilnej kvality v\u00fdrobkov a efekt\u00edvnej v\u00fdroby.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Pre\u010do je norma ASTM D1894 d\u00f4le\u017eit\u00e1<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>ASTM D1894<\/strong> je \u0161tandardn\u00e1 sk\u00fa\u0161obn\u00e1 met\u00f3da pou\u017e\u00edvan\u00e1 na stanovenie <strong>statick\u00fd koeficient trenia<\/strong> a <strong>kinetick\u00fd koeficient trenia<\/strong> z plastov\u00fdch f\u00f3li\u00ed a pl\u00e1tov.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tento test hodnot\u00ed, ak\u00e1 sila je potrebn\u00e1 na spustenie pohybu medzi dvoma sty\u010dn\u00fdmi povrchmi a ak\u00e1 sila je potrebn\u00e1 na udr\u017eanie plynul\u00e9ho k\u013azania. Tieto merania poskytuj\u00fa cenn\u00e9 inform\u00e1cie o k\u013azav\u00fdch vlastnostiach obalov\u00fdch materi\u00e1lov.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pri v\u00fdrobe obalov m\u00e1 trenie priamy vplyv na:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Vysokor\u00fdchlostn\u00e9 oper\u00e1cie formovania, plnenia a uzatv\u00e1rania<\/li>\n\n\n\n<li>Zariadenia na automatick\u00e9 ozna\u010dovanie<\/li>\n\n\n\n<li>Syst\u00e9my balenia do kart\u00f3nov a dopravn\u00e9 syst\u00e9my<\/li>\n\n\n\n<li>Stabilita stohovania bal\u00edkov<\/li>\n\n\n\n<li>V\u00fdkonnos\u0165 nav\u00edjania rol\u00ed<\/li>\n\n\n\n<li>Sk\u00fasenosti spotrebite\u013eov s obsluhou<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Ke\u010f\u017ee povrchov\u00e9 trenie ovplyv\u0148uje nielen efekt\u00edvnos\u0165 v\u00fdroby, ale aj vlastnosti kone\u010dn\u00e9ho v\u00fdrobku, <strong>testovanie COF obalov<\/strong> sa stala be\u017en\u00fdm postupom kontroly kvality v mnoh\u00fdch odvetviach.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Porozumenie statick\u00e9mu a kinetick\u00e9mu koeficientu trenia<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Str\u00e1nka <strong>sk\u00fa\u0161ka koeficientu trenia<\/strong> meria dva r\u00f4zne typy trenia.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Parameter<\/th><th>Popis<\/th><th>V\u00fdznam<\/th><\/tr><\/thead><tbody><tr><td>Statick\u00fd koeficient trenia (COF)<\/td><td>Sila potrebn\u00e1 na za\u010datie pohybu<\/td><td>Nazna\u010duje po\u010diato\u010dn\u00fa tendenciu k zalepeniu alebo upchatiu<\/td><\/tr><tr><td>Kinetic COF<\/td><td>Sila potrebn\u00e1 na udr\u017eanie pohybu<\/td><td>Odr\u00e1\u017ea v\u00fdkon pri nepretr\u017eitom k\u013azan\u00ed<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Vysok\u00fd statick\u00fd koeficient trenia (COF) m\u00f4\u017ee sp\u00f4sobi\u0165 zlepenie f\u00f3li\u00ed, zatia\u013e \u010do ve\u013emi n\u00edzky COF m\u00f4\u017ee zn\u00ed\u017ei\u0165 stabilitu stohu. Podobne aj kinetick\u00fd koeficient trenia (COF) ovplyv\u0148uje plynulos\u0165 pohybu materi\u00e1lov v baliacich strojoch.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Optim\u00e1lna \u00farove\u0148 trenia z\u00e1vis\u00ed sk\u00f4r od konkr\u00e9tneho pou\u017eitia ne\u017e od snahy dosiahnu\u0165 \u010do najni\u017e\u0161iu hodnotu.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Princ\u00edp sk\u00fa\u0161ania pod\u013ea normy ASTM D1894<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Princ\u00edp <strong>ASTM D1894<\/strong> je to jednoduch\u00e9.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Vzorka sa upevn\u00ed na vodorovn\u00fa sk\u00fa\u0161obn\u00fa plo\u0161inu, zatia\u013e \u010do druh\u00e1 vzorka sa pripevn\u00ed k za\u0165a\u017een\u00e9mu san\u00ed. Sanice sa pomocou sk\u00fa\u0161obn\u00e9ho pr\u00edstroja \u0165ahaj\u00fa kontrolovanou r\u00fdchlos\u0165ou. Po\u010das pohybu pr\u00edstroj nepretr\u017eite meria \u0165ahov\u00fa silu.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Koeficient trenia sa vypo\u010d\u00edta takto:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>COF = trecia sila \u00f7 norm\u00e1lna sila<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Najv\u00e4\u010d\u0161ia sila potrebn\u00e1 na spustenie pohybu predstavuje statick\u00fd koeficient trenia, zatia\u013e \u010do priemern\u00e1 sila po\u010das rovnomern\u00e9ho k\u013azania predstavuje kinetick\u00fd koeficient trenia.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Presn\u00e9 riadenie r\u00fdchlosti je nevyhnutn\u00e9, preto\u017ee hodnoty trenia s\u00fa citliv\u00e9 na r\u00fdchlos\u0165 pohybu. Norma ASTM D1894 stanovuje sk\u00fa\u0161obn\u00fa r\u00fdchlos\u0165 <strong>150 mm\/min<\/strong>, zatia\u013e \u010do norma ISO 8295 stanovuje <strong>100 mm\/min<\/strong>, \u010do znamen\u00e1, \u017ee s\u00falad pr\u00edstroja s vybranou normou je nevyhnutn\u00fd.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Po\u017eiadavky na sk\u00fa\u0161obn\u00e9 vzorky<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Spr\u00e1vna pr\u00edprava vzoriek je k\u013e\u00fa\u010dov\u00e1 pre z\u00edskanie spo\u013eahliv\u00fdch \u00fadajov.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pod\u013ea normy ASTM D1894:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Vzorka<\/th><th>Typick\u00e1 ve\u013ekos\u0165<\/th><\/tr><\/thead><tbody><tr><td>Rovinn\u00fd vzorka<\/td><td>Pribli\u017ene 250 \u00d7 130 mm<\/td><\/tr><tr><td>Film pripevnen\u00fd k saniam<\/td><td>Pribli\u017ene 120 \u00d7 120 mm<\/td><\/tr><tr><td>Hrub\u00fd plech pripevnen\u00fd k saniam<\/td><td>63,5 \u00d7 63,5 mm<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Norma tie\u017e odpor\u00fa\u010da:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Sk\u00fa\u0161anie najmenej piatich vzoriek<\/li>\n\n\n\n<li>Pou\u017e\u00edvanie \u010dist\u00fdch, nekontaminovan\u00fdch vzoriek<\/li>\n\n\n\n<li>Ako zabr\u00e1ni\u0165 vzniku odtla\u010dkov prstov na testovan\u00fdch povrchoch<\/li>\n\n\n\n<li>V\u00fdmena vzoriek po ka\u017edom teste<\/li>\n\n\n\n<li>Udr\u017eiavanie kon\u0161tantn\u00e9ho smeru vl\u00e1kien po\u010das testovania<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Aj mal\u00e9 mno\u017estv\u00e1 prachu alebo oleja m\u00f4\u017eu v\u00fdrazne ovplyvni\u0165 nameran\u00e9 hodnoty trenia.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Faktory ovplyv\u0148uj\u00face koeficient trenia plastovej f\u00f3lie<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Str\u00e1nka <strong>koeficient trenia plastovej f\u00f3lie<\/strong> z\u00e1vis\u00ed od mnoh\u00fdch faktorov okrem samotn\u00e9ho materi\u00e1lu.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Medzi be\u017en\u00e9 ovplyv\u0148uj\u00face faktory patria:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Pr\u00edsady do maz\u00edv<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Polyetyl\u00e9nov\u00e9 a polypropyl\u00e9nov\u00e9 f\u00f3lie \u010dasto obsahuj\u00fa pr\u00edsady na zlep\u0161enie k\u013azavosti, ktor\u00e9 sa v priebehu \u010dasu pres\u00favaj\u00fa na povrch, \u010d\u00edm menia trecie vlastnosti.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u00daprava povrchu<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Kor\u00f3nov\u00e1 \u00faprava, plazmov\u00e1 \u00faprava, povrchov\u00e9 vrstvy a potla\u010d menia povrchov\u00fa energiu a n\u00e1sledne ovplyv\u0148uj\u00fa trecie vlastnosti.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Starnutie filmu<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Mnoh\u00e9 pr\u00edsady sa postupne uvo\u013e\u0148uj\u00fa. Preto sa v\u00fdsledky meran\u00ed trenia m\u00f4\u017eu zmeni\u0165 nieko\u013eko dn\u00ed alebo t\u00fd\u017ed\u0148ov po v\u00fdrobe.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Teplota a vlhkos\u0165<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Podmienky prostredia ovplyv\u0148uj\u00fa vlastnosti povrchu polym\u00e9ru a po\u010das testovania by sa mali regulova\u0165.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">V\u00fdrobn\u00fd proces<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Na morfol\u00f3giu povrchu maj\u00fa vplyv podmienky extrudovania, teplota chladiaceho valca aj r\u00fdchlos\u0165 spracovania.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Aby bolo mo\u017en\u00e9 vykona\u0165 zmyslupln\u00e9 porovnania, laborat\u00f3ri\u00e1 by mali dodr\u017eiava\u0165 jednotn\u00e9 postupy pr\u00edpravy vzoriek a rovnak\u00e9 podmienky prostredia.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Koeficient trenia papiera v porovnan\u00ed s plastovou f\u00f3liou<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Hoci <strong>ASTM D1894<\/strong> zameriava sa predov\u0161etk\u00fdm na plastov\u00e9 f\u00f3lie a plachty, podobn\u00e9 koncepcie sk\u00fa\u0161ok trenia s\u00fa v\u0161ak u\u017eito\u010dn\u00e9 aj pri hodnoten\u00ed <strong>koeficient trenia papiera<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Medzi oblasti pou\u017eitia papierov\u00fdch obalov patria:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Skladacie kart\u00f3ny<\/li>\n\n\n\n<li>Vlnit\u00e9 vlo\u017eky<\/li>\n\n\n\n<li>Papierov\u00e9 \u0161t\u00edtky<\/li>\n\n\n\n<li>Povlakovan\u00e1 lepenka<\/li>\n\n\n\n<li>Tla\u010dov\u00e9 podklady<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Povrchy papiera sa \u010dasto vyzna\u010duj\u00fa r\u00f4znymi tribologick\u00fdmi vlastnos\u0165ami v d\u00f4sledku drsnosti, povrchov\u00fdch \u00faprav, orient\u00e1cie vl\u00e1kien a absorpcie vlhkosti. Pri mnoh\u00fdch spracovate\u013esk\u00fdch oper\u00e1ci\u00e1ch ovplyv\u0148uje v\u00fdkon strojov aj trenie medzi papierom a plastov\u00fdmi f\u00f3liami.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Porozumenie obom <strong>koeficient trenia papiera<\/strong> a plastov\u00fdch materi\u00e1lov umo\u017e\u0148uje v\u00fdrobcom optimalizova\u0165 obalov\u00e9 syst\u00e9my zlo\u017een\u00e9 z viacer\u00fdch materi\u00e1lov.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Aplik\u00e1cie testovania koeficientu trenia (COF) obalov<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Testovanie koeficientu trenia (COF) obalov<\/strong> sa \u0161iroko vyu\u017e\u00edva v priebehu cel\u00e9ho procesu v\u00fdvoja a v\u00fdroby produktov.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Flexibiln\u00e9 obaly<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Vreck\u00e1 na ob\u010derstvenie<\/li>\n\n\n\n<li>Obaly na mrazen\u00e9 potraviny<\/li>\n\n\n\n<li>Vreck\u00e1 na steriliz\u00e1ciu<\/li>\n\n\n\n<li>V\u00e1kuov\u00e9 vreck\u00e1<\/li>\n\n\n\n<li>Stojat\u00e9 vreck\u00e1<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Farmaceutick\u00e9 obaly<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Lek\u00e1rske vreck\u00e1<\/li>\n\n\n\n<li>Materi\u00e1ly na uzatv\u00e1ranie blistrov<\/li>\n\n\n\n<li>Syst\u00e9my sterilnej bari\u00e9ry<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Spotrebn\u00e9 v\u00fdrobky<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Obaly pre v\u00fdrobky osobnej hygieny<\/li>\n\n\n\n<li>Obaly na v\u00fdrobky pre dom\u00e1cnos\u0165<\/li>\n\n\n\n<li>Kozmetick\u00e9 flexibiln\u00e9 obaly<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Priemyseln\u00e9 balenie<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Stre\u010dov\u00e9 f\u00f3lie<\/li>\n\n\n\n<li>Smr\u0161\u0165ovacie f\u00f3lie<\/li>\n\n\n\n<li>Ochrann\u00e9 vlo\u017eky<\/li>\n\n\n\n<li>Vreck\u00e1 na \u0165a\u017ek\u00e9 za\u0165a\u017eenie<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Pravideln\u00e9 testovanie trenia pom\u00e1ha odhali\u0165 odch\u00fdlky vo v\u00fdrobe e\u0161te predt\u00fdm, ako sa v\u00fdrobky dostan\u00fa k z\u00e1kazn\u00edkom.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Ako vybra\u0165 zariadenie na testovanie koeficientu trenia (COF)<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00fdber toho spr\u00e1vneho <strong>Zku\u0161ebn\u00fd stroj COF<\/strong> neznamen\u00e1 len splnenie z\u00e1kladn\u00fdch noriem. Laborat\u00f3ri\u00e1 by mali vyhodnoti\u0165 viacero v\u00fdkonnostn\u00fdch charakterist\u00edk.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Medzi d\u00f4le\u017eit\u00e9 aspekty patria:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>S\u00falad s normami ASTM D1894 a ISO 8295<\/li>\n\n\n\n<li>Stabiln\u00e1 regul\u00e1cia \u0165ahovej r\u00fdchlosti<\/li>\n\n\n\n<li>Vysoko presn\u00fd sn\u00edma\u010d za\u0165a\u017eenia<\/li>\n\n\n\n<li>Automatick\u00fd v\u00fdpo\u010det statick\u00e9ho a kinetick\u00e9ho koeficientu trenia (COF)<\/li>\n\n\n\n<li>Intuit\u00edvne ovl\u00e1danie<\/li>\n\n\n\n<li>Funkcie ukladania a exportu \u00fadajov<\/li>\n\n\n\n<li>Syst\u00e9m opakovan\u00fdch pohybov<\/li>\n\n\n\n<li>Jednoduch\u00e1 in\u0161tal\u00e1cia vzorky<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Modern\u00e9 laborat\u00f3ri\u00e1 tie\u017e vyu\u017e\u00edvaj\u00fa v\u00fdhody dotykov\u00fdch rozhran\u00ed, \u0161tatistickej anal\u00fdzy a funkci\u00ed digit\u00e1lneho vykazovania.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Pr\u00edstroj na meranie koeficientu trenia COF-01 od spolo\u010dnosti Cell Instruments<\/h2>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-7387b849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-large is-resized\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/07\/COF-01cof-testing-machine-1024x1024.webp\" alt=\"ASTM D1894 \u2013 Sk\u00fa\u0161ka koeficientu trenia pre obalov\u00e9 materi\u00e1ly\" class=\"wp-image-1426\" style=\"width:314px;height:auto\" title=\"\" srcset=\"https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/07\/COF-01cof-testing-machine-1024x1024.webp 1024w, https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/07\/COF-01cof-testing-machine-300x300.webp 300w, https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/07\/COF-01cof-testing-machine-150x150.webp 150w, https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/07\/COF-01cof-testing-machine-768x768.webp 768w, https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/07\/COF-01cof-testing-machine-12x12.webp 12w, https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/07\/COF-01cof-testing-machine.webp 1080w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"wp-block-paragraph\">Pre laborat\u00f3ri\u00e1, ktor\u00e9 potrebuj\u00fa spo\u013eahliv\u00e9 <strong>sk\u00fa\u0161ka koeficientu trenia<\/strong> v\u00fdsledky, <strong>COF-01 Pr\u00edstroj na meranie koeficientu trenia<\/strong> z <a href=\"https:\/\/www.packtests.com\/sk\/\" target=\"_blank\" rel=\"noreferrer noopener\">Cell Instruments<\/a> pon\u00faka praktick\u00e9 rie\u0161enie pre be\u017en\u00fa kontrolu kvality a v\u00fdskumn\u00e9 \u00fa\u010dely.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">K\u013e\u00fa\u010dov\u00e9 technick\u00e9 \u00fadaje<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Polo\u017eka<\/th><th>\u0160pecifik\u00e1cia<\/th><\/tr><\/thead><tbody><tr><td>Sn\u00edma\u010d za\u0165a\u017eenia<\/td><td>5 N (nastavite\u013en\u00e9)<\/td><\/tr><tr><td>Presnos\u0165<\/td><td>0,51 TP5T F.S.<\/td><\/tr><tr><td>Hmotnos\u0165 san\u00ed<\/td><td>200 \u00b11 g<\/td><\/tr><tr><td>R\u00fdchlos\u0165 testu<\/td><td>150 mm\/min (ASTM), 100 mm\/min (ISO)<\/td><\/tr><tr><td>Pohybov\u00fd syst\u00e9m<\/td><td>Krokov\u00fd motor s gu\u013e\u00f4\u010dkov\u00fdm vodiacim skrutkom<\/td><\/tr><tr><td>Pou\u017e\u00edvate\u013esk\u00e9 rozhranie<\/td><td>Riadenie pomocou PLC s dotykov\u00fdm rozhran\u00edm HMI<\/td><\/tr><tr><td>V\u00fdstup \u00fadajov<\/td><td>Max., Min., priemern\u00e1 hodnota COF, tla\u010diare\u0148, volite\u013en\u00e9 rozhranie RS-232<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Praktick\u00e9 vlastnosti<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Zariadenie COF-01 je navrhnut\u00e9 tak, aby zv\u00fd\u0161ilo efekt\u00edvnos\u0165 testovania prostredn\u00edctvom:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Dvojre\u017eimov\u00e9 statick\u00e9 a kinetick\u00e9 sk\u00fa\u0161ky<\/li>\n\n\n\n<li>Automatick\u00fd zber \u00fadajov<\/li>\n\n\n\n<li>Zobrazenie krivky trenia v re\u00e1lnom \u010dase<\/li>\n\n\n\n<li>Opakovate\u013en\u00fd presn\u00fd pohyb<\/li>\n\n\n\n<li>Odoln\u00e1 hlin\u00edkov\u00e1 testovacia plo\u0161ina<\/li>\n\n\n\n<li>Jazykov\u00e9 rozhranie s mo\u017enos\u0165ou prisp\u00f4sobenia<\/li>\n\n\n\n<li>Ochrana proti pre\u0165a\u017eeniu a automatick\u00fd n\u00e1vrat<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Tieto funkcie pom\u00e1haj\u00fa laborat\u00f3ri\u00e1m dosahova\u0165 konzistentn\u00e9 a opakovate\u013en\u00e9 v\u00fdsledky a z\u00e1rove\u0148 zjednodu\u0161uj\u00fa ka\u017edodenn\u00fa prev\u00e1dzku.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Osved\u010den\u00e9 postupy pre spo\u013eahliv\u00e9 testovanie pod\u013ea normy ASTM D1894<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Na zlep\u0161enie konzistentnosti merania:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Vzorky pripravujte v kontrolovan\u00fdch laborat\u00f3rnych podmienkach.<\/li>\n\n\n\n<li>So vzorkami manipulujte v\u017edy, ke\u010f je to mo\u017en\u00e9, v rukaviciach.<\/li>\n\n\n\n<li>Na ka\u017ed\u00fd test pou\u017e\u00edvajte \u010derstv\u00e9 vzorky.<\/li>\n\n\n\n<li>Udr\u017eujte testovaciu platformu v \u010distote.<\/li>\n\n\n\n<li>Pravidelne kontrolujte hmotnos\u0165 san\u00ed.<\/li>\n\n\n\n<li>Sn\u00edma\u010d za\u0165a\u017eenia pravidelne kalibrujte.<\/li>\n\n\n\n<li>Dodr\u017eiavajte stanoven\u00fa r\u00fdchlos\u0165 \u0165ahania.<\/li>\n\n\n\n<li>Vykonajte dostato\u010dn\u00fd po\u010det opakovan\u00ed, aby bola zabezpe\u010den\u00e1 \u0161tatistick\u00e1 spo\u013eahlivos\u0165.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Konzistentn\u00e9 laborat\u00f3rne postupy \u010dasto prispievaj\u00fa k opakovate\u013enosti v\u00fdsledkov viac ne\u017e samotn\u00fd pr\u00edstroj.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">ASTM D1894 a s\u00favisiace normy<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Hoci <strong>ASTM D1894<\/strong> je jednou z naj\u010dastej\u0161ie pou\u017e\u00edvan\u00fdch noriem na meranie trenia plastov\u00fdch f\u00f3li\u00ed; laborat\u00f3ri\u00e1 \u010dasto pracuj\u00fa s pr\u00edslu\u0161n\u00fdmi normami v z\u00e1vislosti od materi\u00e1lu a \u00fa\u010delu pou\u017eitia.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u0160tandard<\/th><th>\u017diados\u0165<\/th><\/tr><\/thead><tbody><tr><td>ASTM D1894<\/td><td>Statick\u00fd a kinetick\u00fd koeficient trenia (COF) plastov\u00fdch f\u00f3li\u00ed a pl\u00e1tov<\/td><\/tr><tr><td>ISO 8295<\/td><td>Koeficient trenia plastov\u00fdch f\u00f3li\u00ed a pl\u00e1tov<\/td><\/tr><tr><td>ASTM D2534<\/td><td>Koeficient trenia voskov\u00fdch povlakov<\/td><\/tr><tr><td>TAPPI T549<\/td><td>Sk\u00fa\u0161ky trenia papiera a lepenky<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00fdber vhodnej normy zaru\u010duje, \u017ee v\u00fdsledky bud\u00fa zodpoveda\u0165 \u0161pecifik\u00e1ci\u00e1m v\u00fdrobku a po\u017eiadavk\u00e1m z\u00e1kazn\u00edka.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Z\u00e1ver<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Trenie na povrchu v\u00fdznamne ovplyv\u0148uje v\u00fdkonnos\u0165 balenia, efekt\u00edvnos\u0165 v\u00fdroby a kvalitu v\u00fdrobkov. <a href=\"https:\/\/store.astm.org\/d1894-24.html\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">ASTM D1894<\/a> poskytuje \u0161tandardizovan\u00fa met\u00f3du merania charakterist\u00edk statick\u00e9ho aj kinetick\u00e9ho trenia, \u010do v\u00fdrobcom umo\u017e\u0148uje sledova\u0165 konzistentnos\u0165 v\u00fdrobn\u00e9ho procesu, vyhodnocova\u0165 zmeny v materi\u00e1loch a optimalizova\u0165 vlastnosti obalov.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u010ci u\u017e ide o pos\u00fadenie <strong>koeficient trenia plastovej f\u00f3lie<\/strong>, pri hodnoten\u00ed <strong>koeficient trenia papiera<\/strong>, alebo vykon\u00e1vanie rutinn\u00fdch <strong>testovanie COF obalov<\/strong>, spo\u013eahliv\u00e9 vybavenie a \u0161tandardizovan\u00e9 postupy s\u00fa nevyhnutn\u00e9 na dosiahnutie relevantn\u00fdch v\u00fdsledkov. Vysokokvalitn\u00fd <strong>Zku\u0161ebn\u00fd stroj COF<\/strong>, v kombin\u00e1cii so spr\u00e1vnou pr\u00edpravou vzoriek a kontrolovan\u00fdmi laborat\u00f3rnymi podmienkami, umo\u017e\u0148uje v\u00fdrobcom prij\u00edma\u0165 informovan\u00e9 rozhodnutia t\u00fdkaj\u00face sa kvality, zni\u017eova\u0165 variabilitu v\u00fdroby a zlep\u0161ova\u0165 vlastnosti obalov v \u0161irokom spektre odvetv\u00ed.<\/p>","protected":false},"excerpt":{"rendered":"<p>Plastic films play a critical role in modern packaging, from food pouches and pharmaceutical sachets to industrial liners and consumer product wrapping. One of the most important surface characteristics influencing package performance is the ASTM D1894 coefficient of friction (COF). An improper friction level can lead to production downtime, poor machinability, unstable pallet loads, or [&hellip;]<\/p>","protected":false},"featured_media":1426,"parent":0,"template":"","meta":{"_acf_changed":false},"standard-category":[],"class_list":["post-1425","standard","type-standard","status-publish","has-post-thumbnail","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.packtests.com\/sk\/wp-json\/wp\/v2\/standard\/1425","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.packtests.com\/sk\/wp-json\/wp\/v2\/standard"}],"about":[{"href":"https:\/\/www.packtests.com\/sk\/wp-json\/wp\/v2\/types\/standard"}],"version-history":[{"count":5,"href":"https:\/\/www.packtests.com\/sk\/wp-json\/wp\/v2\/standard\/1425\/revisions"}],"predecessor-version":[{"id":1590,"href":"https:\/\/www.packtests.com\/sk\/wp-json\/wp\/v2\/standard\/1425\/revisions\/1590"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.packtests.com\/sk\/wp-json\/wp\/v2\/media\/1426"}],"wp:attachment":[{"href":"https:\/\/www.packtests.com\/sk\/wp-json\/wp\/v2\/media?parent=1425"}],"wp:term":[{"taxonomy":"standard-category","embeddable":true,"href":"https:\/\/www.packtests.com\/sk\/wp-json\/wp\/v2\/standard-category?post=1425"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}