{"id":1465,"date":"2026-01-21T12:09:25","date_gmt":"2026-01-21T12:09:25","guid":{"rendered":"https:\/\/www.rollingballtack.com\/?p=1465"},"modified":"2026-01-21T12:17:37","modified_gmt":"2026-01-21T12:17:37","slug":"low-tack-adhesives-rolling-ball-tack-test","status":"publish","type":"post","link":"https:\/\/www.rollingballtack.com\/cs\/low-tack-adhesives-rolling-ball-tack-test\/","title":{"rendered":"Lepidla s n\u00edzkou p\u0159ilnavost\u00ed a zku\u0161ebn\u00ed metoda p\u0159ilnavosti v\u00e1le\u010dkovou koul\u00ed"},"content":{"rendered":"<p class=\"wp-block-paragraph\"><strong>Lepidla s n\u00edzkou p\u0159ilnavost\u00ed<\/strong> hraj\u00ed d\u016fle\u017eitou roli v aplikac\u00edch, kde je vy\u017eadov\u00e1no do\u010dasn\u00e9 lepen\u00ed, snadn\u00e1 zm\u011bna polohy nebo \u010dist\u00e1 odstranitelnost. P\u0159\u00edkladem jsou ochrann\u00e9 f\u00f3lie, p\u0159em\u00edstiteln\u00e9 etikety, maskovac\u00ed materi\u00e1ly a speci\u00e1ln\u00ed p\u00e1sky. U t\u011bchto v\u00fdrobk\u016f m\u016f\u017ee nadm\u011brn\u00e1 po\u010d\u00e1te\u010dn\u00ed p\u0159ilnavost zp\u016fsobit probl\u00e9my p\u0159i manipulaci, po\u0161kozen\u00ed povrchu nebo tvorbu zbytk\u016f. V\u00fdrobci a odborn\u00edci na kvalitu proto pot\u0159ebuj\u00ed spolehliv\u00fd zp\u016fsob, jak porovn\u00e1vat a kontrolovat p\u0159ilnavost na spodn\u00ed hranici spektra p\u0159ilnavosti.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Metoda zkou\u0161ky lepivosti valivou koul\u00ed nab\u00edz\u00ed jednoduch\u00fd a \u0161iroce uzn\u00e1van\u00fd p\u0159\u00edstup k hodnocen\u00ed lepidel s n\u00edzkou lepivost\u00ed. Pochopen\u00edm jej\u00edch princip\u016f, postup\u016f a omezen\u00ed mohou u\u017eivatel\u00e9 tuto metodu spr\u00e1vn\u011b pou\u017e\u00edt a z\u00edskat smyslupln\u00e9 \u00fadaje pro kontrolu kvality.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u00da\u010del metody zkou\u0161ky p\u0159ilnavosti valiv\u00e9 koule<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Na str\u00e1nk\u00e1ch <strong>metoda zkou\u0161ky p\u0159ilnavosti valivou koul\u00ed<\/strong> m\u011b\u0159\u00ed srovn\u00e1vac\u00ed p\u0159ilnavost lepidel citliv\u00fdch na tlak pozorov\u00e1n\u00edm interakce ocelov\u00e9 kuli\u010dky s povrchem pokryt\u00fdm lepidlem. Tato metoda se zam\u011b\u0159uje zejm\u00e9na na <strong>lepidla s n\u00edzkou p\u0159ilnavost\u00ed<\/strong>, kde je t\u0159eba zjistit jemn\u00e9 rozd\u00edly v po\u010d\u00e1te\u010dn\u00ed adhezi bez slo\u017eit\u00e9ho p\u0159\u00edstrojov\u00e9ho vybaven\u00ed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Podle <strong>ASTM D3121<\/strong>, slou\u017e\u00ed tato zku\u0161ebn\u00ed metoda jako jeden z n\u011bkolika dostupn\u00fdch p\u0159\u00edstup\u016f k m\u011b\u0159en\u00ed lepivosti. Klade d\u016fraz na rychlost, jednoduchost a reprodukovatelnost sp\u00ed\u0161e ne\u017e na simulaci skute\u010dn\u00fdch podm\u00ednek pou\u017eit\u00ed.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">ASTM D3121 jako \u0159\u00eddic\u00ed norma<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>ASTM D3121<\/strong> definuje rozsah, za\u0159\u00edzen\u00ed a obecn\u00e9 z\u00e1sady metody zkou\u0161ky p\u0159ilnavosti valivou koul\u00ed. Norma jasn\u011b uv\u00e1d\u00ed, \u017ee tato metoda je nejvhodn\u011bj\u0161\u00ed pro lepidla s n\u00edzkou p\u0159ilnavost\u00ed a nedoporu\u010duje se pro specifikaci vlastnost\u00ed kone\u010dn\u00e9ho v\u00fdrobku. M\u00edsto toho slou\u017e\u00ed jako srovn\u00e1vac\u00ed zkou\u0161ka zam\u011b\u0159en\u00e1 na kvalitu.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Po <a href=\"https:\/\/store.astm.org\/d3121-25.html\" target=\"_blank\" rel=\"noopener\">ASTM D3121 <\/a>zaji\u0161\u0165uje konzistentn\u00ed zku\u0161ebn\u00ed geometrii, kontrolovan\u00e9 prom\u011bnn\u00e9 a srovnateln\u00e9 v\u00fdsledky v laboratorn\u00edm prost\u0159ed\u00ed.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u00daloha testeru kuli\u010dkov\u00fdch tampon\u016f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A <strong>tester kuli\u010dkov\u00fdch lepidel<\/strong> poskytuje naklon\u011bnou rovinu, vodorovnou zku\u0161ebn\u00ed plochu a \u0159\u00edzen\u00fd uvol\u0148ovac\u00ed mechanismus pot\u0159ebn\u00fd pro metodu zkou\u0161ky p\u0159ilnavosti valiv\u00e9 koule. Speci\u00e1ln\u00ed testery zlep\u0161uj\u00ed opakovatelnost d\u00edky zachov\u00e1n\u00ed pevn\u00e9ho \u00fahlu sklonu, plynul\u00e9mu uvol\u0148ov\u00e1n\u00ed kuli\u010dek a stabiln\u00ed adhezivn\u00ed plo\u0161in\u011b, co\u017e pom\u00e1h\u00e1 minimalizovat vliv obsluhy.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Pro\u010d je u lepidel s n\u00edzkou p\u0159ilnavost\u00ed d\u016fle\u017eit\u00e1 p\u0159ilnavost valiv\u00e9 koule?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Lepidla s n\u00edzkou p\u0159ilnavost\u00ed vy\u017eaduj\u00ed pe\u010dliv\u00e9 vyv\u00e1\u017een\u00ed. Mus\u00ed zajistit dostate\u010dnou p\u0159ilnavost, aby z\u016fstala na m\u00edst\u011b, a z\u00e1rove\u0148 umo\u017enit snadn\u00e9 odstran\u011bn\u00ed nebo p\u0159em\u00edst\u011bn\u00ed. V\u00fdrobc\u016fm a u\u017eivatel\u016fm pom\u00e1h\u00e1 testov\u00e1n\u00ed lepivosti valivou koul\u00ed:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Zji\u0161\u0165ov\u00e1n\u00ed rozd\u00edl\u016f mezi jednotliv\u00fdmi \u0161ar\u017eemi v receptur\u00e1ch lepidel.<\/li>\n\n\n\n<li>Sledov\u00e1n\u00ed konzistence b\u011bhem v\u00fdroby<\/li>\n\n\n\n<li>Porovn\u00e1n\u00ed podobn\u00fdch syst\u00e9m\u016f lepidel s n\u00edzkou lepivost\u00ed za kontrolovan\u00fdch podm\u00ednek<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Proto\u017ee test citliv\u011b reaguje na mal\u00e9 zm\u011bny v chov\u00e1n\u00ed lepidla, je vhodn\u00fd pro rutinn\u00ed \u00fakoly kontroly kvality.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Princip metody zkou\u0161en\u00ed p\u0159ilnavosti valiv\u00e9 koule<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">P\u0159i zkou\u0161ce p\u0159ilnavosti valivou koul\u00ed se <strong>ocelov\u00e1 kuli\u010dka<\/strong> se uvol\u0148uje z horn\u00ed \u010d\u00e1sti naklon\u011bn\u00e9 dr\u00e1hy. Gravitace zp\u016fsob\u00ed, \u017ee se kuli\u010dka zrychl\u00ed dol\u016f po \u0161ikm\u00e9 plo\u0161e a kut\u00e1l\u00ed se na vodorovn\u00fd povrch pokryt\u00fd zkou\u0161en\u00fdm lepidlem.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">P\u0159i pohybu kuli\u010dky po lepidle na ni p\u016fsob\u00ed dv\u011b hlavn\u00ed brzdn\u00e9 s\u00edly:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Lepidlo se \u201cchytne\u201d<\/strong>, zp\u016fsoben\u00e9 adhez\u00ed mezi kuli\u010dkou a adhezivn\u00edm povrchem.<\/li>\n\n\n\n<li><strong>Odpor p\u0159i orb\u011b<\/strong>, co\u017e p\u0159edstavuje energii pot\u0159ebnou k vytla\u010den\u00ed adhezivn\u00edho materi\u00e1lu z dr\u00e1hy kuli\u010dky.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">M\u00ed\u010d se nakonec zastav\u00ed a <strong>vzd\u00e1lenost ujet\u00e1 p\u0159es lepidlo<\/strong> se stane m\u011b\u0159en\u00fdm v\u00fdsledkem. Krat\u0161\u00ed vzd\u00e1lenosti znamenaj\u00ed vy\u0161\u0161\u00ed p\u0159ilnavost, zat\u00edmco del\u0161\u00ed vzd\u00e1lenosti odr\u00e1\u017eej\u00ed ni\u017e\u0161\u00ed p\u0159ilnavost.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Kl\u00ed\u010dov\u00e9 faktory ovliv\u0148uj\u00edc\u00ed v\u00fdsledky test\u016f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Norma ASTM D3121 zd\u016fraz\u0148uje n\u011bkolik prom\u011bnn\u00fdch, kter\u00e9 siln\u011b ovliv\u0148uj\u00ed v\u00fdsledky p\u0159ilnavosti valiv\u00e9 koule. Tyto faktory mus\u00ed z\u016fstat p\u0159\u00edsn\u011b kontrolov\u00e1ny, aby bylo zaji\u0161t\u011bno smyslupln\u00e9 srovn\u00e1n\u00ed.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Tlou\u0161\u0165ka lepic\u00edho filmu<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Siln\u011bj\u0161\u00ed lepic\u00ed f\u00f3lie obvykle zvy\u0161uj\u00ed odolnost proti pohybu kuli\u010dky. I mal\u00e9 rozd\u00edly v tlou\u0161\u0165ce povlaku mohou v\u00e9st ke znateln\u00fdm zm\u011bn\u00e1m v nam\u011b\u0159en\u00e9 vzd\u00e1lenosti.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Spojen\u00ed mezi lepidlem a podkladem<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0160patn\u00e1 vazba mezi lepidlem a jeho podlo\u017ekou m\u016f\u017ee zm\u011bnit efekt orby a sn\u00ed\u017eit spolehlivost testu. Bezpe\u010dn\u00e1 p\u0159ilnavost k podkladu podporuje konzistentn\u00ed v\u00fdsledky.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Tuhost podkladu<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Tuhost podkladu ovliv\u0148uje, jak se lepidlo deformuje pod val\u00edc\u00ed se kuli\u010dkou. Pevn\u011bj\u0161\u00ed podklady \u010dasto poskytuj\u00ed jin\u00e9 hodnoty p\u0159ilnavosti ne\u017e podklady pru\u017en\u00e9, a to i p\u0159i pou\u017eit\u00ed stejn\u00e9ho lepidla.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Interpretace v\u00fdsledk\u016f pro kontrolu kvality<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00fdsledek valiv\u00e9 koule poskytuje <strong>srovn\u00e1vac\u00ed \u00fadaje<\/strong>, nikoliv absolutn\u00ed p\u0159edpov\u011bdi v\u00fdkonu. Krat\u0161\u00ed brzdn\u00e9 dr\u00e1hy nazna\u010duj\u00ed siln\u011bj\u0161\u00ed po\u010d\u00e1te\u010dn\u00ed odpor, zat\u00edmco del\u0161\u00ed dr\u00e1hy nazna\u010duj\u00ed ni\u017e\u0161\u00ed p\u0159ilnavost.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">U lepidel s n\u00edzkou lepivost\u00ed tyto v\u00fdsledky pom\u00e1haj\u00ed sp\u00ed\u0161e identifikovat trendy ne\u017e definovat vhodnost pou\u017eit\u00ed. Norma ASTM D3121 uv\u00e1d\u00ed, \u017ee lepivost valiv\u00e9 koule dob\u0159e nekoreluje s mnoha po\u017eadavky na lepivost v re\u00e1ln\u00fdch aplikac\u00edch, co\u017e posiluje jej\u00ed roli sp\u00ed\u0161e jako n\u00e1stroje kontroly kvality ne\u017e jako specifikace n\u00e1vrhu.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">V\u00fdhody a omezen\u00ed metody<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">V\u00fdhody<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Rychl\u00fd a snadn\u00fd provoz<\/strong><\/li>\n\n\n\n<li>Minim\u00e1ln\u00ed po\u017eadavky na \u0161kolen\u00ed obsluhy<\/li>\n\n\n\n<li>N\u00edzk\u00e9 investice do vybaven\u00ed<\/li>\n\n\n\n<li>Dobr\u00e1 reprodukovatelnost v r\u00e1mci jedn\u00e9 laborato\u0159e<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Omezen\u00ed<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Omezen\u00e1 korelace se skute\u010dn\u00fdmi podm\u00ednkami pou\u017eit\u00ed<\/li>\n\n\n\n<li>Citlivost na prom\u011bnn\u00e9 p\u0159i p\u0159\u00edprav\u011b vzorku<\/li>\n\n\n\n<li>Nevhodn\u00e9 pro hodnocen\u00ed lepidla s vysokou lepivost\u00ed<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Pochopen\u00ed t\u011bchto siln\u00fdch a slab\u00fdch str\u00e1nek umo\u017e\u0148uje u\u017eivatel\u016fm metodu vhodn\u011b pou\u017e\u00edt.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u00davahy o vybaven\u00ed a praktick\u00e9 pou\u017eit\u00ed<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Konzistentn\u00ed v\u00fdsledky z\u00e1vis\u00ed na stabiln\u00edm vybaven\u00ed a kontrolovan\u00fdch zku\u0161ebn\u00edch podm\u00ednk\u00e1ch. Dob\u0159e navr\u017een\u00fd <strong>Cell Instruments <a href=\"https:\/\/www.rollingballtack.com\/cs\/\">Tester valiv\u00fdch kuli\u010dek<\/a><\/strong> podporuje p\u0159esnou geometrii sklonu, plynul\u00e9 uvoln\u011bn\u00ed kuli\u010dky a opakovateln\u00e9 m\u011b\u0159en\u00ed v souladu s po\u017eadavky normy ASTM D3121. Takov\u00e9 za\u0159\u00edzen\u00ed se dob\u0159e hod\u00ed do prost\u0159ed\u00ed v\u00fdrobn\u00ed kontroly kvality, kde z\u00e1le\u017e\u00ed na rychlosti a konzistenci.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Metoda zkou\u0161ky lepivosti valivou koul\u00ed sp\u00ed\u0161e dopl\u0148uje ostatn\u00ed zkou\u0161ky lepivosti nebo odlupov\u00e1n\u00ed, ne\u017e aby je nahrazovala, proto\u017ee se zam\u011b\u0159uje na spodn\u00ed hranici v\u00fdkonnosti lepidla.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Z\u00e1v\u011br<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Lepidla s n\u00edzkou p\u0159ilnavost\u00ed<\/strong> vy\u017eaduj\u00ed pe\u010dlivou kontrolu po\u010d\u00e1te\u010dn\u00edch adhezn\u00edch vlastnost\u00ed. Metoda zkou\u0161ky p\u0159ilnavosti valivou koul\u00ed, kter\u00e1 se \u0159\u00edd\u00ed <strong>ASTM D3121<\/strong>, poskytuje rychl\u00fd a reprodukovateln\u00fd zp\u016fsob porovn\u00e1v\u00e1n\u00ed \u00farovn\u011b lepivosti a sledov\u00e1n\u00ed konzistence v\u00fdroby. Pochopen\u00edm principu testu, kontrolou kl\u00ed\u010dov\u00fdch prom\u011bnn\u00fdch a pou\u017eit\u00edm vhodn\u00e9ho vybaven\u00ed mohou odborn\u00edci na kvalitu tuto metodu s jistotou pou\u017e\u00edt jako sou\u010d\u00e1st \u0161ir\u0161\u00ed strategie testov\u00e1n\u00ed lepidel.<\/p>","protected":false},"excerpt":{"rendered":"<p>Low tack adhesives play an important role in applications where temporary bonding, easy repositioning, or clean removability is required. Examples include protective films, repositionable labels, masking materials, and specialty tapes. For these products, excessive initial adhesion can cause handling problems, surface damage, or residue. As a result, manufacturers and quality professionals need a reliable way [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1465","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.rollingballtack.com\/cs\/wp-json\/wp\/v2\/posts\/1465","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.rollingballtack.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.rollingballtack.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.rollingballtack.com\/cs\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.rollingballtack.com\/cs\/wp-json\/wp\/v2\/comments?post=1465"}],"version-history":[{"count":2,"href":"https:\/\/www.rollingballtack.com\/cs\/wp-json\/wp\/v2\/posts\/1465\/revisions"}],"predecessor-version":[{"id":1467,"href":"https:\/\/www.rollingballtack.com\/cs\/wp-json\/wp\/v2\/posts\/1465\/revisions\/1467"}],"wp:attachment":[{"href":"https:\/\/www.rollingballtack.com\/cs\/wp-json\/wp\/v2\/media?parent=1465"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.rollingballtack.com\/cs\/wp-json\/wp\/v2\/categories?post=1465"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.rollingballtack.com\/cs\/wp-json\/wp\/v2\/tags?post=1465"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}