{"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\/hr\/applications\/loop-tack-test-method\/","title":{"rendered":"Metoda ispitivanja Loop Tack"},"content":{"rendered":"<h2 class=\"wp-block-heading\">Metoda Loop Tack testa za procjenu adhezivnih svojstava<\/h2>\n\n\n\n<p>Pritiskom osjetljivi ljepilni materijali (PSA) igraju klju\u010dnu ulogu u trakama, etiketama, medicinskim oblogama i industrijskim sustavima spajanja. 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 osobito va\u017ena.<\/p>\n\n\n\n<p>The <strong>Metoda ispitivanja petlje za sidrenje<\/strong> \u0160iroko je priznata 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 pri\u010dvr\u0161\u0107ivanje: mjerenje trenuta\u010dne adhezije<\/h2>\n\n\n\n<p><strong>Testiranje petlje<\/strong> procjenjuje koliko brzo i sna\u017eno pritisno-osjetljivi ljepilo prianja na podlogu kada se primijeni minimalni pritisak. Test uklju\u010duje formiranje petlje ljepljive trake s ljepljivom stranom okrenutom prema van i dovodjenje u kontrolirani kontakt s povr\u0161inom od nehr\u0111aju\u0107eg \u010delika.<\/p>\n\n\n\n<p>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>Klju\u010dne karakteristike mjereni tijekom ispitivanja loop tacka uklju\u010duju:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Po\u010detna \u010dvrsto\u0107a prianjanja<\/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 kvara<\/strong> (prianjanje, kohezija ili prijenos)<\/li>\n<\/ul>\n\n\n\n<p>Budu\u0107i da kontaktni tlak ostaje minimalan i kontroliran, test zakva\u010denja petlje pru\u017ea pouzdan pokazatelj kako se ljepilo pona\u0161a tijekom primjene u stvarnim uvjetima.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Procjena trakaste petlje osjetljive na pritisak<\/h2>\n\n\n\n<p>The <strong>igla za om\u010du trake osjetljive na pritisak<\/strong> Test je osobito 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 pakiranje<\/li>\n\n\n\n<li>Pritisno osjetljive naljepnice<\/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\/hr\/standard\/pstc-16\/\" target=\"_blank\" rel=\"noreferrer noopener\">PSTC-16<\/a> Loop Tack Standard<\/h3>\n\n\n\n<p><strong>PSTC-16<\/strong> je metoda ispitivanja koju je razvio Vije\u0107e za pritisno osjetljive trake za procjenu <strong>procjena svojstava pritiskom 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>U testu se ljepljiva traka preklapa u <strong>petlja u obliku suze s lijepljivom 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 je <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>PSTC-16 specificira dva pristupa mjerenju:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Metoda A:<\/strong> kori\u0161tenjem ispitiva\u010da zatezanja s <strong>175 mm traka uzoraka<\/strong><\/li>\n\n\n\n<li><strong>Metoda B:<\/strong> koriste\u0107i <strong>namjenski tester za klinove petlji<\/strong> s <strong>125 mm traka uzoraka<\/strong><\/li>\n<\/ul>\n\n\n\n<p>Ovaj standard se \u0161iroko koristi za <strong>kontrola kvalitete 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\/hr\/standard\/astm-d6195\/\" target=\"_blank\" rel=\"noreferrer noopener\">ASTM D6195<\/a> Metoda ispitivanja Loop Tack<\/h3>\n\n\n\n<p><strong><a href=\"https:\/\/www.packqc.com\/hr\/standard\/astm-d6195\/\">ASTM D6195<\/a><\/strong> osigurava standardizirane postupke za mjerenje <strong>petlja za pri\u010dvr\u0161\u0107ivanje proizvoda na pritisak osjetljive ljepilne trake<\/strong>, uklju\u010duju\u0107i trake, naljepnice i laminate. Metoda kvantificira <strong>trenuta\u010dna sila prianjanja<\/strong> generirano 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>Prisje\u010dak sa ljepljivom podlogom oblikovan je u <strong>petlja i doveden u kontrolirani kontakt sa plo\u010dom od nehr\u0111aju\u0107eg \u010delika dimenzija 25 mm \u00d7 25 mm<\/strong>.<br>Nakon \u0161to do\u0111e do kontakta, ispitna se sprava odmah povla\u010di petlju od plo\u010de 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>ASTM D6195 dopu\u0161ta dvije konfiguracije ispitivanja:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Metoda ispitivanja na zatezanje<\/strong> kori\u0161tenjem univerzalne ispitne sprave i petlje za ispitivanje<\/li>\n\n\n\n<li><strong>Metoda ispitivanja petlje<\/strong> kori\u0161tenjem namjenskog instrumenta dizajniranog posebno za mjerenje tacka<\/li>\n<\/ul>\n\n\n\n<p>Standard pru\u017ea <strong>pouzdano kvantitativno mjerenje adhezivnog u\u010depa<\/strong>, \u0161to ga \u010dini pogodnim za istra\u017eivanje, razvoj proizvoda i rutinsku kontrolu kvalitete.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a href=\"https:\/\/www.packqc.com\/hr\/standard\/finat-ftm-9\/\" target=\"_blank\" rel=\"noreferrer noopener\">FINAT FTM 9<\/a><\/h3>\n\n\n\n<p><strong>FINAT FTM 9<\/strong> je dio FINAT-ovog tehni\u010dkog priru\u010dnika koji se \u0161iroko koristi u <strong>industrija samoljepljivih etiketa<\/strong>. Metoda procjenjuje <strong>\u201cpo\u010detni zahvat\u201d ili aplikacijski 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\">Na\u010delo mjerenja<\/h4>\n\n\n\n<p>Ljepljiva traka je oblikovana u <strong>petlja s ljepljivom povr\u0161inom okrenutom prema van<\/strong> i montirana na ispitiva\u010du za vla\u010dne napone. Petlja dolazi u dodir s <strong>staklena testna plo\u010dica (otprilike 25 mm \u00d7 25 mm)<\/strong> i zatim se odvaja na <strong>kontrolirana brzina od 300 mm\/min<\/strong>.<\/p>\n\n\n\n<p>The <strong>Sila potrebna za odvajanje petlje od povr\u0161ine<\/strong> predstavlja vrijednost sidra petlje.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Uvjeti testiranja i rezultati<\/h4>\n\n\n\n<p>Tipi\u010dni uvjeti testa su <strong>23 \u00b0C \u00b12 \u00b0C i 50 % RH \u00b15 %<\/strong>. Barem <strong>pet primjeraka<\/strong> se testira, i prosje\u010dna sila u <strong>Newtoni<\/strong> izvje\u0161tava se.<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>Duljina 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 laboratorijima<\/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 Europi preferirano za ljepila za etikete<\/td><\/tr><\/tbody><\/table><\/figure>","protected":false},"excerpt":{"rendered":"<p>Loop Tack Test Method for Adhesive Performance Evaluation Pressure-sensitive adhesives (PSAs) play a critical role in tapes, labels, medical dressings, and industrial bonding systems. Among the many performance indicators used to evaluate these materials, tack\u2014the ability of an adhesive to quickly form a bond with light pressure\u2014is particularly important. The loop tack test method is [&hellip;]<\/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\/hr\/wp-json\/wp\/v2\/applications\/9296","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.packqc.com\/hr\/wp-json\/wp\/v2\/applications"}],"about":[{"href":"https:\/\/www.packqc.com\/hr\/wp-json\/wp\/v2\/types\/applications"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.packqc.com\/hr\/wp-json\/wp\/v2\/media\/9890"}],"wp:attachment":[{"href":"https:\/\/www.packqc.com\/hr\/wp-json\/wp\/v2\/media?parent=9296"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}