{"id":5,"date":"2020-05-27T23:30:29","date_gmt":"2020-05-27T23:30:29","guid":{"rendered":"https:\/\/hotmelts.eu\/?page_id=5"},"modified":"2021-08-23T10:09:37","modified_gmt":"2021-08-23T10:09:37","slug":"hot-melt-adhesives","status":"publish","type":"page","link":"https:\/\/hotmelts.eu\/cs\/","title":{"rendered":"Tavn\u00e1 lepidla"},"content":{"rendered":"<p>Tavn\u00e1 lepidla jsou v\u00fdrobky neobsahuj\u00edc\u00ed rozpou\u0161t\u011bdla ani vody, kter\u00e9 jsou p\u0159i pokojov\u00e9 teplot\u011b v\u00edcem\u00e9n\u011b pevn\u00e9, jsou v hork\u00e9m stavu p\u0159\u00edtomny jako visk\u00f3zn\u00ed kapalina a jsou nan\u00e1\u0161eny na povrch lepidla. P\u0159i chlazen\u00ed reverzibiln\u011b ztuhnou a vytvo\u0159\u00ed pevn\u00e9 pouto. Tato skupina lepidel jsou termoplastick\u00e9 polymery na b\u00e1zi r\u016fzn\u00fdch chemick\u00fdch surovin<\/p>\n\n\n\n<div class=\"wp-block-nk-awb nk-awb\"><div class=\"nk-awb-wrap\" data-awb-type=\"yt_vm_video\" data-awb-video=\"https:\/\/www.youtube.com\/watch?v=SKlMGHs3XGY&amp;t=7s\" data-awb-video-mobile=\"false\"><div class=\"nk-awb-inner is-layout-constrained wp-block-awb-is-layout-constrained\"><\/div><\/div>\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"342\" height=\"341\" src=\"https:\/\/hotmelts.eu\/wp-content\/uploads\/2021\/08\/transp-leeg.png\" alt=\"\" class=\"wp-image-101\" srcset=\"https:\/\/hotmelts.eu\/wp-content\/uploads\/2021\/08\/transp-leeg.png 342w, https:\/\/hotmelts.eu\/wp-content\/uploads\/2021\/08\/transp-leeg-300x300.png 300w, https:\/\/hotmelts.eu\/wp-content\/uploads\/2021\/08\/transp-leeg-150x150.png 150w, https:\/\/hotmelts.eu\/wp-content\/uploads\/2021\/08\/transp-leeg-12x12.png 12w\" sizes=\"auto, (max-width: 342px) 100vw, 342px\" \/><\/figure>\n\n\n\n<p>Co je to tavn\u00e9 lepidlo? <\/p>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Termoplastick\u00e1 a vytvrzuj\u00edc\u00ed tavn\u00e1 lepidla<\/h2>\n\n\n\n<p>Tavn\u00e1 lepidla lze rozd\u011blit na fyzicky a chemicky tuhnouc\u00ed lepidla. Fyzik\u00e1ln\u011b tuhnouc\u00ed lepidla jsou termoplasty, chemicky tuhnouc\u00ed tvo\u0159\u00ed termosety, tj. Trojrozm\u011brn\u00e9 s\u00edt\u011b. Dal\u0161\u00ed typ klasifikace se t\u00fdk\u00e1 mechanismu tuhnut\u00ed. Tavn\u00e1 lepidla se zde d\u011bl\u00ed na amorfn\u00ed polymery, semikrystalick\u00e9 polymery a vysokomolekul\u00e1rn\u00ed polymery, p\u0159i\u010dem\u017e prvn\u00ed dv\u011b maj\u00ed teplotu skeln\u00e9ho p\u0159echodu nad pokojovou teplotu a druh\u00e1 maj\u00ed teplotu skeln\u00e9ho p\u0159echodu pod pokojovou teplotu <\/p>\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<iframe loading=\"lazy\" title=\"Tavn\u00e1 lepidla Intercol\" width=\"680\" height=\"383\" src=\"https:\/\/www.youtube.com\/embed\/Ypzhe41eUCU?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe>\n<\/div><figcaption>Tavn\u00e1 lepidla Intercol<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">EVA a polyolefin<\/h2>\n\n\n\n<p>Hlavn\u00edmi polymery pou\u017e\u00edvan\u00fdmi pro fyzik\u00e1ln\u00ed tuhnut\u00ed tavn\u00fdch lepidel jsou polyamidov\u00e9 prysky\u0159ice, nasycen\u00e9 polyestery, kopolymery ethylen-vinylacet\u00e1tu (EVA), polyolefiny, blokov\u00e9 kopolymery (styren-butadien-styren nebo styren-isopren-styren) a polyamidy. <\/p>\n\n\n\n<h2 class=\"wp-block-heading\">PSA<\/h2>\n\n\n\n<p>Lepidla citliv\u00e1 na tlak jsou fyzicky tuhnouc\u00ed syst\u00e9my, kter\u00e9 se vyzna\u010duj\u00ed trvalou lepivost\u00ed. Adheziva dosahuj\u00ed sv\u00e9 p\u0159ilnavosti k materi\u00e1l\u016fm, kter\u00e9 maj\u00ed b\u00fdt spojeny, pomoc\u00ed vyv\u00edjen\u00e9ho kontaktn\u00edho tlaku - se zvy\u0161uj\u00edc\u00edm se kontaktn\u00edm tlakem se dosahuje lep\u0161\u00ed adheze. Proto\u017ee ke spojov\u00e1n\u00ed lepidel citliv\u00fdch na tlak m\u016f\u017ee doch\u00e1zet p\u0159ed i po procesu tuhnut\u00ed, v z\u00e1vislosti na s\u00edle trval\u00e9ho lepen\u00ed, jsou \u010dasto pou\u017e\u00edv\u00e1na pro p\u0159edb\u011b\u017en\u00e9 potahov\u00e1n\u00ed. To znamen\u00e1, \u017ee proces aplikace lze prov\u00e1d\u011bt nez\u00e1visle na lepen\u00ed z hlediska \u010dasu a prostoru.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"697\" height=\"606\" src=\"https:\/\/hotmelts.eu\/wp-content\/uploads\/2020\/05\/PSA-hot-melt-engineering.png\" alt=\"\" class=\"wp-image-6\" srcset=\"https:\/\/hotmelts.eu\/wp-content\/uploads\/2020\/05\/PSA-hot-melt-engineering.png 697w, https:\/\/hotmelts.eu\/wp-content\/uploads\/2020\/05\/PSA-hot-melt-engineering-300x261.png 300w\" sizes=\"auto, (max-width: 697px) 100vw, 697px\" \/><figcaption>In\u017een\u00fdrstv\u00ed tavn\u00e9ho lepidla psa<\/figcaption><\/figure>\n\n\n\n<p><br>Tavn\u00e1 lepidla citliv\u00e1 na tlak od Intercolu se vyzna\u010duj\u00ed vysokou p\u0159ilnavost\u00ed k r\u016fzn\u00fdm materi\u00e1l\u016fm a vysokou pevnost\u00ed a pru\u017enost\u00ed. P\u0159i zpracov\u00e1n\u00ed tato modern\u00ed lepidla boduj\u00ed d\u00edky sv\u00e9 nadpr\u016fm\u011brn\u00e9 po\u010d\u00e1te\u010dn\u00ed lepivosti a vynikaj\u00edc\u00ed stabilit\u011b viskozity.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>Hot-melt adhesives are solvent-free or water-free products that are more or less solid at room temperature, [&hellip;]<\/p>","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"template-full-width.php","meta":{"footnotes":""},"class_list":["post-5","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Hot melt adhesives - Hotmelt adhesives<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/hotmelts.eu\/cs\/\" \/>\n<meta property=\"og:locale\" content=\"cs_CZ\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Hot melt adhesives - 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