{"id":9296,"date":"2026-02-02T11:23:36","date_gmt":"2026-02-02T03:23:36","guid":{"rendered":"https:\/\/www.packqc.com\/applications\/loop-tack-test-method\/"},"modified":"2026-03-11T15:40:25","modified_gmt":"2026-03-11T07:40:25","slug":"loop-tack-test-method","status":"publish","type":"applications","link":"https:\/\/www.packqc.com\/bs\/applications\/loop-tack-test-method\/","title":{"rendered":"Metoda Loop Tack testa"},"content":{"rendered":"<h2 class=\"wp-block-heading\">Metoda Loop Tack testa za procjenu adhezivnih svojstava<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Prilagodljivi ljepljivi materijali osjetljivi na pritisak (PSA) igraju klju\u010dnu ulogu u trakama, etiketama, medicinskim zavojima i industrijskim sistemima za lijepljenje. Me\u0111u mnogim pokazateljima performansi koji se koriste za procjenu ovih materijala, <strong>uzde<\/strong>\u2014sposobnost ljepila da brzo stvori vezu pri blagom pritisku\u2014je posebno va\u017ena.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The <strong>metoda ispitivanja petlje<\/strong> \u0160iroko je priznat kao jedna od najpouzdanijih tehnika za mjerenje trenuta\u010dne adhezije materijala osjetljivih na pritisak. Kvantificiranjem maksimalne sile potrebne za odvajanje adhezivne petlje od standardizirane povr\u0161ine, test pru\u017ea jasno i ponovljivo mjerenje adhezivne snage.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Testiranje petlje za provjeru adhezije: mjerenje performansi trenuta\u010dne adhezije<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Testiranje petlje<\/strong> procjenjuje koliko brzo i sna\u017eno ljepljiva traka osjetljiva na pritisak prianja na podlogu kada se primijeni minimalni pritisak. Test uklju\u010duje formiranje petlje ljepljive trake tako da ljepljiva povr\u0161ina gleda prema van i dovodjenje u kontrolirani kontakt sa povr\u0161inom od nehr\u0111aju\u0107eg \u010delika.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Kada petlja do\u0111e u kontakt sa supstratom, samo <strong>te\u017eina samog uzorka<\/strong> osigurava pritisak spajanja. Instrument za ispitivanje zatim odvaja petlju od podloge dok bilje\u017ei <strong>maksimalna sila potrebna za odvajanje<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Klju\u010dne karakteristike koje se mjere tokom testiranja loop tack-a uklju\u010duju:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Po\u010detna adhezivna \u010dvrsto\u0107a<\/strong><\/li>\n\n\n\n<li><strong>Brzina lijepljenja<\/strong><\/li>\n\n\n\n<li><strong>Ujedna\u010denost formulacije ljepila<\/strong><\/li>\n\n\n\n<li><strong>Pona\u0161anje u re\u017eimu otkaza<\/strong> (prianjanje, kohezija ili prijenos)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Budu\u0107i da kontaktni pritisak ostaje minimalan i kontroliran, testiranje tackinga petlje pru\u017ea pouzdan pokazatelj kako se ljepilo pona\u0161a pri stvarnom nano\u0161enju.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Procjena petlje sa trakom osjetljivom na pritisak<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The <strong>igla na trakastu traku osjetljivu na pritisak<\/strong> Test je posebno va\u017ean za industrije u kojima je potrebna brza adhezija. To uklju\u010duje:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Trake za pakovanje<\/li>\n\n\n\n<li>Prilagodljive pritisku etikete<\/li>\n\n\n\n<li>Medicinske ljepljive trake<\/li>\n\n\n\n<li>Za\u0161titne folije<\/li>\n\n\n\n<li>Industrijski materijali za lijepljenje<\/li>\n<\/ul>\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=\"Test petlje prema ASTM D6195, PSTC-16, FINAT br. 9.\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/L1HbDnq-LxQ?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\">Loop Tack Standard \u2013 PSTC-16 i ASTM D6195 i FINAT FTM 9<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><a href=\"https:\/\/www.packqc.com\/bs\/standard\/pstc-16\/\" target=\"_blank\" rel=\"noreferrer noopener\">PSTC-16<\/a> Loop Tack Standard<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>PSTC-16<\/strong> je metoda ispitivanja koju je razvio Vije\u0107e za pritiskom osjetljive trake za procjenu <strong>procjena performansi pritisno-osjetljivih ljepila<\/strong>. Metoda mjeri koliko brzo ljepilo stvara vezu odmah nakon kratkog kontakta s drugom povr\u0161inom.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Osnovni princip testiranja<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">U testu se ljepljiva traka savija u <strong>petlja u obliku suze s ljepljivom stranom okrenutom prema van<\/strong>. Petlja lagano dodiruje a <strong>1 kvadratni in\u010d povr\u0161ine od nehr\u0111aju\u0107eg \u010delika<\/strong>, gdje jedini primijenjeni pritisak dolazi od <strong>te\u017eina samog ljepljivog uzorka<\/strong>.<br>Instrument za testiranje zatim odvaja petlju od povr\u0161ine i bilje\u017ei <strong>maksimalna sila potrebna za prekid veze<\/strong>, \u0161to predstavlja vrijednost sidrenog zavoja.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Klju\u010dne konfiguracije testa<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">PSTC-16 specificira dva pristupa mjerenju:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Metoda A:<\/strong> koriste\u0107i tester zatezanja sa <strong>175 mm traka uzorka<\/strong><\/li>\n\n\n\n<li><strong>Metoda B:<\/strong> koriste\u0107i se <strong>Namjenski tester za klinove petlji<\/strong> sa <strong>125 mm traka uzorka<\/strong><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Ovaj standard se \u0161iroko koristi za <strong>kontrola kvaliteta i usporedba performansi ljepila<\/strong> u proizvodnji traka i etiketa.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a href=\"https:\/\/www.packqc.com\/bs\/standard\/astm-d6195\/\" target=\"_blank\" rel=\"noreferrer noopener\">ASTM D6195<\/a> Metoda Loop Tack testa<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><a href=\"https:\/\/www.packqc.com\/bs\/standard\/astm-d6195\/\">ASTM D6195<\/a><\/strong> pru\u017ea standardizirane procedure za mjerenje <strong>petlja od ljepljivih proizvoda osjetljivih na pritisak<\/strong>, uklju\u010duju\u0107i trake, etikete i laminate. Metoda kvantificira <strong>trenutna sila prianjanja<\/strong> generisano kada ljepilo nakratko do\u0111e u kontakt s povr\u0161inom za ispitivanje.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Koncept testiranja<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Prisje\u010dak sa ljepljivom podlogom oblikovan je u <strong>petlja i dovedena u kontrolirani kontakt sa panelom od nehr\u0111aju\u0107eg \u010delika dimenzija 25 mm \u00d7 25 mm<\/strong>.<br>Nakon \u0161to do\u0111e do kontakta, ispitna ma\u0161ina odmah odvaja petlju od panela i bilje\u017ei <strong>vr\u0161na sila potrebna za razdvajanje<\/strong>.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Opcije opreme<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">ASTM D6195 omogu\u0107ava dvije konfiguracije ispitivanja:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Metoda ispitivanja na istezanje<\/strong> kori\u0161tenjem univerzalne ma\u0161ine za ispitivanje i petlje za pri\u010dvr\u0161\u0107ivanje<\/li>\n\n\n\n<li><strong>Metoda testera petlje<\/strong> kori\u0161tenjem namjenskog instrumenta dizajniranog posebno za mjerenje tacka<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Standard pru\u017ea <strong>pouzdano kvantitativno mjerenje adhezivnog u\u010depa<\/strong>, \u0161to ga \u010dini pogodnim za istra\u017eivanje, razvoj proizvoda i rutinsku kontrolu kvaliteta.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a href=\"https:\/\/www.packqc.com\/bs\/standard\/finat-ftm-9\/\" target=\"_blank\" rel=\"noreferrer noopener\">FINAT FTM 9<\/a><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>FINAT FTM 9<\/strong> je dio FINAT tehni\u010dkog priru\u010dnika koji se \u0161iroko koristi u <strong>industrija samoljepljivih etiketa<\/strong>. Metoda procjenjuje <strong>\u201cpo\u010detni zahvat\u201d ili aplikacioni tack<\/strong> od pritiskom osjetljivih laminata, \u0161to je klju\u010dno za procese kao \u0161to su <strong>automatsko etiketiranje<\/strong>.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Princip mjerenja<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Ljepljiva traka je oblikovana u <strong>petlja s ljepljivom povr\u0161inom okrenutom prema van<\/strong> i montirana na testeru za istezanje. Petlja dolazi u dodir s <strong>staklena testna plo\u010dica (pribli\u017eno 25 mm \u00d7 25 mm)<\/strong> i zatim se odvaja na <strong>kontrolisana brzina od 300 mm\/min<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The <strong>sila potrebna za odvajanje petlje od povr\u0161ine<\/strong> Predstavlja vrijednost klin\u010di\u0107a petlje.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Uslovi testiranja i rezultati<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Tipi\u010dni uslovi testa su <strong>23 \u00b0C \u00b12 \u00b0C i 50 % vla\u017enosti zraka \u00b15 %<\/strong>. Barem <strong>pet uzoraka<\/strong> se testira, i prosje\u010dna sila u <strong>Njutnovi<\/strong> se navodi.<br>Dodatna zapa\u017eanja kao \u0161to su <strong>prijenos ljepila (AT)<\/strong> ili <strong>trganje papira (PT)<\/strong> mo\u017ee se tako\u0111er zabilje\u017eiti radi opisa na\u010dina kvara.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Standard<\/th><th>Du\u017eina petlje<\/th><th>Povr\u0161ina<\/th><th>Klju\u010dne note<\/th><\/tr><\/thead><tbody><tr><td><strong data-start=\"2088\" data-end=\"2099\">PSTC-16<\/strong><\/td><td>125 mm ili 175 mm<\/td><td>24 mm \u00d7 24 mm<\/td><td>Dvije metode ispitivanja (tester za istezanje ili tester za petlju)<\/td><\/tr><tr><td><strong data-start=\"2195\" data-end=\"2209\">ASTM D6195<\/strong><\/td><td>125 mm (Metoda B) ili 175 mm (Metoda A)<\/td><td>25 mm \u00d7 25 mm<\/td><td>\u0160iroko se koristi u ameri\u010dkim ispitnim laboratorijama<\/td><\/tr><tr><td><strong data-start=\"2306\" data-end=\"2321\">FINAT FTM 9<\/strong><\/td><td>175 mm<\/td><td>25 mm \u00d7 25 mm (staklo)<\/td><td>U Evropi preferirano za ljepila za etikete<\/td><\/tr><\/tbody><\/table><\/figure>","protected":false},"excerpt":{"rendered":"<p>Metoda petljastog testa za ocjenu adhezivnih svojstava   Prijenosno osjetljivi adhezivi (PSA) igraju klju\u010dnu ulogu u trakama, etiketama, medicinskim oblogama i industrijskim sistemima vezivanja. Me\u0111u mnogim pokazateljima performansi koji se koriste za ocjenu ovih materijala, tack \u2013 sposobnost adheziva da pri blagom pritisku brzo formira vezu \u2013 je posebno va\u017ean. Metoda petljastog testa je [\u2026]<\/p>","protected":false},"featured_media":9890,"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":""}}},"class_list":["post-9296","applications","type-applications","status-publish","has-post-thumbnail","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.packqc.com\/bs\/wp-json\/wp\/v2\/applications\/9296","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.packqc.com\/bs\/wp-json\/wp\/v2\/applications"}],"about":[{"href":"https:\/\/www.packqc.com\/bs\/wp-json\/wp\/v2\/types\/applications"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.packqc.com\/bs\/wp-json\/wp\/v2\/media\/9890"}],"wp:attachment":[{"href":"https:\/\/www.packqc.com\/bs\/wp-json\/wp\/v2\/media?parent=9296"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}