{"id":1261,"date":"2026-05-12T08:14:06","date_gmt":"2026-05-12T08:14:06","guid":{"rendered":"https:\/\/www.packtests.com\/?post_type=standard&#038;p=1261"},"modified":"2026-05-12T09:09:33","modified_gmt":"2026-05-12T09:09:33","slug":"astm-f1921","status":"publish","type":"standard","link":"https:\/\/www.packtests.com\/sk\/standard\/astm-f1921\/","title":{"rendered":"ASTM F1921"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"1261\" class=\"elementor elementor-1261\" data-elementor-post-type=\"standard\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5ec1237 e-flex e-con-boxed e-con e-parent\" data-id=\"5ec1237\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b53c995 elementor-widget elementor-widget-text-editor\" data-id=\"b53c995\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>Norma ASTM F1921 a met\u00f3da sk\u00fa\u0161ky pri vysokej teplote<\/h2><p>Norma ASTM F1921 definuje <strong>laborat\u00f3rna met\u00f3da merania pevnosti tepeln\u00fdch zvarov bezprostredne po ich vytvoren\u00ed<\/strong>, sk\u00f4r ne\u017e materi\u00e1l vychladne na teplotu okolia. T\u00e1to vlastnos\u0165 \u2013 zn\u00e1ma ako <em>pevnos\u0165 pri hor\u00facom lepen\u00ed<\/em>\u2014je k\u013e\u00fa\u010dov\u00e9 vo vysokor\u00fdchlostn\u00fdch baliacich prostrediach, najm\u00e4 <strong>form-fill-seal (FFS)<\/strong> procesy.<\/p><p>Str\u00e1nka <strong>met\u00f3da sk\u00fa\u0161ky pri vysokej teplote<\/strong> simuluje skuto\u010dn\u00e9 podmienky zape\u010datenia p\u00f4soben\u00edm regulovan\u00e9ho tepla a tlaku na termoplastick\u00e9 f\u00f3lie.<\/p><p>Na rozdiel od be\u017en\u00fdch sk\u00fa\u0161ok pevnosti tesnenia vykon\u00e1van\u00fdch pri izbovej teplote sa pod\u013ea normy ASTM F1921 a met\u00f3dy sk\u00fa\u0161ky pri vysokej teplote hodnot\u00ed <strong>kontrolovanie integrity tesnenia v re\u00e1lnom \u010dase pri tepelnej z\u00e1\u0165a\u017ei<\/strong>, \u010do z neho rob\u00ed mimoriadne d\u00f4le\u017eit\u00fd faktor pre stabilitu v\u00fdroby a spo\u013eahlivos\u0165 balenia.<\/p><h2>Postup sk\u00fa\u0161ky pri vysokej teplote<\/h2><p>Norma ASTM F1921 stanovuje pevnos\u0165 tepeln\u00e9ho zvaru bezprostredne po jeho vytvoren\u00ed. Sk\u00fa\u0161obn\u00fd cyklus zah\u0155\u0148a zv\u00e1ranie, otvorenie \u010de\u013eust\u00ed, vytiahnutie, oneskorenie\/ochladenie a oddelenie up\u00ednac\u00edch \u010de\u013eust\u00ed na \u00fa\u010dely merania sily.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-ef8e840 e-con-full e-flex e-con e-child\" data-id=\"ef8e840\" data-element_type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-8140b4b e-con-full e-flex e-con e-child\" data-id=\"8140b4b\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e756c01 elementor-widget__width-inherit elementor-position-top elementor-widget elementor-widget-image-box\" data-id=\"e756c01\" data-element_type=\"widget\" data-widget_type=\"image-box.default\">\n\t\t\t\t\t<div class=\"elementor-image-box-wrapper\"><figure class=\"elementor-image-box-img\"><img fetchpriority=\"high\" decoding=\"async\" width=\"300\" height=\"200\" src=\"https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/05\/Hot-Tack-Testing-Process-1-Seal.webp\" class=\"attachment-large size-large wp-image-1278\" alt=\"Postup testovania pri vysokej teplote \u2013 1. tesnenie\" title=\"\" srcset=\"https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/05\/Hot-Tack-Testing-Process-1-Seal.webp 300w, https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/05\/Hot-Tack-Testing-Process-1-Seal-18x12.webp 18w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/figure><div class=\"elementor-image-box-content\"><h3 class=\"elementor-image-box-title\">1. Pe\u010da\u0165<\/h3><p class=\"elementor-image-box-description\">Dva p\u00e1siky sa zape\u010datia pri stanoven\u00fdch teplot\u00e1ch, tlaku a dobe p\u00f4sobenia.<\/p><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4658d39 elementor-widget__width-initial elementor-view-default elementor-widget elementor-widget-icon\" data-id=\"4658d39\" data-element_type=\"widget\" data-widget_type=\"icon.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-icon-wrapper\">\n\t\t\t<div class=\"elementor-icon\">\n\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-long-arrow-alt-right\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M313.941 216H12c-6.627 0-12 5.373-12 12v56c0 6.627 5.373 12 12 12h301.941v46.059c0 21.382 25.851 32.09 40.971 16.971l86.059-86.059c9.373-9.373 9.373-24.569 0-33.941l-86.059-86.059c-15.119-15.119-40.971-4.411-40.971 16.971V216z\"><\/path><\/svg>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-85446db elementor-widget__width-inherit elementor-position-top elementor-widget elementor-widget-image-box\" data-id=\"85446db\" data-element_type=\"widget\" data-widget_type=\"image-box.default\">\n\t\t\t\t\t<div class=\"elementor-image-box-wrapper\"><figure class=\"elementor-image-box-img\"><img decoding=\"async\" width=\"300\" height=\"200\" src=\"https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/05\/Hot-Tack-Testing-Process-2-Open-Jaws.webp\" class=\"attachment-large size-large wp-image-1279\" alt=\"Postup sk\u00fa\u0161ky pri vysokej teplote 2 \u2013 otvoren\u00e9 \u010de\u013euste\" title=\"\" srcset=\"https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/05\/Hot-Tack-Testing-Process-2-Open-Jaws.webp 300w, https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/05\/Hot-Tack-Testing-Process-2-Open-Jaws-18x12.webp 18w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/figure><div class=\"elementor-image-box-content\"><h3 class=\"elementor-image-box-title\">2. Otvoren\u00e9 \u010de\u013euste<\/h3><p class=\"elementor-image-box-description\">\u010celuste sa otvoria a utesnen\u00e1 oblas\u0165 sa uvo\u013en\u00ed.<\/p><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-81869d6 elementor-widget__width-initial elementor-view-default elementor-widget elementor-widget-icon\" data-id=\"81869d6\" data-element_type=\"widget\" data-widget_type=\"icon.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-icon-wrapper\">\n\t\t\t<div class=\"elementor-icon\">\n\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-long-arrow-alt-right\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M313.941 216H12c-6.627 0-12 5.373-12 12v56c0 6.627 5.373 12 12 12h301.941v46.059c0 21.382 25.851 32.09 40.971 16.971l86.059-86.059c9.373-9.373 9.373-24.569 0-33.941l-86.059-86.059c-15.119-15.119-40.971-4.411-40.971 16.971V216z\"><\/path><\/svg>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-82dcd8d elementor-widget__width-inherit elementor-position-top elementor-widget elementor-widget-image-box\" data-id=\"82dcd8d\" data-element_type=\"widget\" data-widget_type=\"image-box.default\">\n\t\t\t\t\t<div class=\"elementor-image-box-wrapper\"><figure class=\"elementor-image-box-img\"><img decoding=\"async\" width=\"300\" height=\"200\" src=\"https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/05\/Hot-Tack-Testing-Process-3-Withdraw.webp\" class=\"attachment-large size-large wp-image-1280\" alt=\"Postup sk\u00fa\u0161ky pri vysokej teplote 3 \u2013 Vytiahnutie\" title=\"\" srcset=\"https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/05\/Hot-Tack-Testing-Process-3-Withdraw.webp 300w, https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/05\/Hot-Tack-Testing-Process-3-Withdraw-18x12.webp 18w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/figure><div class=\"elementor-image-box-content\"><h3 class=\"elementor-image-box-title\">3. V\u00fdber<\/h3><p class=\"elementor-image-box-description\">Vzorka sa automaticky vytiahne z medzi \u010de\u013eus\u0165ami.<\/p><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-3657b98 e-con-full e-flex e-con e-child\" data-id=\"3657b98\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e93267b elementor-widget__width-initial elementor-view-default elementor-widget elementor-widget-icon\" data-id=\"e93267b\" data-element_type=\"widget\" data-widget_type=\"icon.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-icon-wrapper\">\n\t\t\t<div class=\"elementor-icon\">\n\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-long-arrow-alt-right\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M313.941 216H12c-6.627 0-12 5.373-12 12v56c0 6.627 5.373 12 12 12h301.941v46.059c0 21.382 25.851 32.09 40.971 16.971l86.059-86.059c9.373-9.373 9.373-24.569 0-33.941l-86.059-86.059c-15.119-15.119-40.971-4.411-40.971 16.971V216z\"><\/path><\/svg>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-17acaff elementor-widget__width-inherit elementor-position-top elementor-widget elementor-widget-image-box\" data-id=\"17acaff\" data-element_type=\"widget\" data-widget_type=\"image-box.default\">\n\t\t\t\t\t<div class=\"elementor-image-box-wrapper\"><figure class=\"elementor-image-box-img\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"200\" src=\"https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/05\/Hot-Tack-Testing-Process-4-Delay-Cooling.webp\" class=\"attachment-large size-large wp-image-1281\" alt=\"Postup sk\u00fa\u0161ky pri vysokej teplote 4 \u2013 Oneskoren\u00e9 chladenie\" title=\"\" srcset=\"https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/05\/Hot-Tack-Testing-Process-4-Delay-Cooling.webp 300w, https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/05\/Hot-Tack-Testing-Process-4-Delay-Cooling-18x12.webp 18w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/figure><div class=\"elementor-image-box-content\"><h3 class=\"elementor-image-box-title\">4. Oneskorenie \/ Chladenie<\/h3><p class=\"elementor-image-box-description\">Po otvoren\u00ed \u010de\u013eust\u00ed sa spust\u00ed prednastaven\u00e9 oneskorenie (doba ochladzovania).<\/p><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e6530af elementor-widget__width-initial elementor-view-default elementor-widget elementor-widget-icon\" data-id=\"e6530af\" data-element_type=\"widget\" data-widget_type=\"icon.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-icon-wrapper\">\n\t\t\t<div class=\"elementor-icon\">\n\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-long-arrow-alt-right\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M313.941 216H12c-6.627 0-12 5.373-12 12v56c0 6.627 5.373 12 12 12h301.941v46.059c0 21.382 25.851 32.09 40.971 16.971l86.059-86.059c9.373-9.373 9.373-24.569 0-33.941l-86.059-86.059c-15.119-15.119-40.971-4.411-40.971 16.971V216z\"><\/path><\/svg>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f33db0e elementor-widget__width-inherit elementor-position-top elementor-widget elementor-widget-image-box\" data-id=\"f33db0e\" data-element_type=\"widget\" data-widget_type=\"image-box.default\">\n\t\t\t\t\t<div class=\"elementor-image-box-wrapper\"><figure class=\"elementor-image-box-img\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"200\" src=\"https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/05\/Hot-Tack-Testing-Process-5-Separate-Measure.webp\" class=\"attachment-large size-large wp-image-1282\" alt=\"Postup testovania pri vysokej teplote 5: Oddelenie a meranie\" title=\"\" srcset=\"https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/05\/Hot-Tack-Testing-Process-5-Separate-Measure.webp 300w, https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/05\/Hot-Tack-Testing-Process-5-Separate-Measure-18x12.webp 18w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/figure><div class=\"elementor-image-box-content\"><h3 class=\"elementor-image-box-title\">5. Odde\u013ete a odmerajte<\/h3><p class=\"elementor-image-box-description\">\u00dachytky sa od seba odde\u013euj\u00fa kon\u0161tantnou r\u00fdchlos\u0165ou a meria sa sila potrebn\u00e1 na otvorenie tesnenia a\u017e do jeho poru\u0161enia.<\/p><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c1d4788 elementor-widget elementor-widget-text-editor\" data-id=\"c1d4788\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>K\u013e\u00fa\u010dov\u00e9 premenn\u00e9 pri sk\u00fa\u0161kach pod\u013ea normy ASTM F1921<\/h2><ul><li><strong>Teplota tesnenia:<\/strong> Zvy\u010dajne sa men\u00ed s cie\u013eom vytvori\u0165 krivku hor\u00facej pri\u013enavosti<\/li><li><strong>Doba zdr\u017eania:<\/strong><ul><li>vrstvy \u2264 25 \u00b5m: ~0,5 s<\/li><li>F\u00f3lie s hr\u00fabkou 25\u201364 \u00b5m: ~1,0 s<\/li><li>64 \u00b5m filmy: ~2,5 s<\/li><\/ul><\/li><li><strong>Tesniaci tlak:<\/strong> 15\u201330 N\/cm\u00b2<\/li><li><strong>Doba chladenia \/ doba oneskorenia:<\/strong> Ur\u010duje \u010dasov\u00fd priebeh merania<\/li><li><strong>R\u00fdchlos\u0165 separ\u00e1cie:<\/strong> Zvy\u010dajne 200 mm\/min (met\u00f3da A)<\/li><\/ul><p>Tieto parametre priamo ovplyv\u0148uj\u00fa v\u00fdsledn\u00fd <strong>pevnos\u0165 zvaru pri vysokej teplote u flexibiln\u00fdch obalov<\/strong> materi\u00e1ly.<\/p><h2>Tester lepivosti za tepla: nevyhnutn\u00e9 vybavenie pre normu ASTM F1921<\/h2><p>A <strong>pr\u00edstroj na meranie pri\u013enavosti za tepla<\/strong> je \u0161peci\u00e1lne navrhnut\u00fd tak, aby napodob\u0148oval proces zape\u010datenia a okam\u017eit\u00e9ho odlepenia definovan\u00fd v norme ASTM F1921. Pokro\u010dil\u00e9 syst\u00e9my \u2013 ako napr\u00edklad tie, ktor\u00e9 vyvinula spolo\u010dnos\u0165 Cell Instruments Co., Ltd. \u2013 pon\u00fakaj\u00fa:<\/p><ul><li><strong>Riadiace syst\u00e9my zalo\u017een\u00e9 na PLC<\/strong> kv\u00f4li opakovate\u013enosti<\/li><li><strong>PID regul\u00e1cia teploty (presnos\u0165 \u00b10,2 \u00b0C)<\/strong><\/li><li><strong>Automatizovan\u00e9 testovacie cykly<\/strong> odstr\u00e1nenie vplyvu obsluhy<\/li><li><strong>Nastavite\u013en\u00e9 r\u00fdchlosti a tlaky pri testovan\u00ed<\/strong><\/li><li><strong>Meranie sily s vysok\u00fdm rozl\u00ed\u0161en\u00edm<\/strong><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-696a839 e-con-full e-flex e-con e-child\" data-id=\"696a839\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a44a8e6 elementor-widget elementor-widget-text-editor\" data-id=\"a44a8e6\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h3>Odpor\u00fa\u010dan\u00e9 rie\u0161enie<\/h3><p>S\u00e9ria Cell Instruments HTT podporuje:<\/p><ul><li><strong>Met\u00f3da A (pevn\u00e9 oneskorenie)<\/strong> a <strong>Met\u00f3da B (premenn\u00e9 oneskorenie)<\/strong><\/li><li>Viacero re\u017eimov testovania: test pri vysokej teplote, test odlupovania, \u0165ahov\u00e1 sk\u00fa\u0161ka, test tepeln\u00e9ho zvaru<\/li><li>Vysokor\u00fdchlostn\u00e9 testovanie a\u017e do <strong>12 000 mm\/min<\/strong> (HTT-02)<\/li><\/ul><p>T\u00e1to flexibilita umo\u017e\u0148uje presn\u00fa charakteriz\u00e1ciu r\u00f4znych materi\u00e1lov a ich tesniacich vlastnost\u00ed.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1d56d80 elementor-widget elementor-widget-image\" data-id=\"1d56d80\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"400\" height=\"638\" src=\"https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/05\/ASTM-F1921-Hot-Tack-Tester.webp\" class=\"attachment-large size-large wp-image-1283\" alt=\"Pr\u00edstroj na meranie pri\u013enavosti za tepla pod\u013ea normy ASTM F1921\" srcset=\"https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/05\/ASTM-F1921-Hot-Tack-Tester.webp 400w, https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/05\/ASTM-F1921-Hot-Tack-Tester-188x300.webp 188w, https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/05\/ASTM-F1921-Hot-Tack-Tester-8x12.webp 8w\" sizes=\"(max-width: 400px) 100vw, 400px\" title=\"\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c31033e elementor-widget elementor-widget-text-editor\" data-id=\"c31033e\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2><strong>Pevnos\u0165 zvaru pri vysokej teplote u flexibiln\u00fdch obalov<\/strong><\/h2><p>Str\u00e1nka <strong>pevnos\u0165 zvaru pri vysokej teplote u flexibiln\u00fdch obalov<\/strong> ur\u010duje, \u010di balenie vydr\u017e\u00ed nam\u00e1hanie bezprostredne po zape\u010daten\u00ed. Slab\u00e1 teplotn\u00e1 pri\u013enavos\u0165 m\u00f4\u017ee vies\u0165 k:<\/p><ul><li>Otvorenie tesnenia po\u010das plnenia<\/li><li>Kontamin\u00e1cia alebo \u00fanik produktu<\/li><li>Zn\u00ed\u017een\u00e1 efekt\u00edvnos\u0165 balenia<\/li><li>Zv\u00fd\u0161en\u00e9 mno\u017estvo odpadu a prestojov<\/li><\/ul><p>Norma ASTM F1921 pom\u00e1ha v\u00fdrobcom:<\/p><ul><li><strong>Hodnotenie v\u00fdkonnosti materi\u00e1lu<\/strong><\/li><li><strong>Optimalizova\u0165 parametre tesnenia<\/strong><\/li><li><strong>Zabezpe\u010dte spo\u013eahlivos\u0165 procesov pri prev\u00e1dzke FFS<\/strong><\/li><\/ul><h2>Sk\u00fa\u0161obn\u00e9 met\u00f3dy pod\u013ea normy ASTM F1921<br \/>\u2014Met\u00f3da A verzus met\u00f3da B<\/h2><p>Norma ASTM F1921 stanovuje dva odli\u0161n\u00e9 pr\u00edstupy:<\/p><h3>Met\u00f3da A \u2013 Pevn\u00e9 oneskorenie<\/h3><ul><li>Mer\u00e1 pevnos\u0165 tesnenia pri <strong>konkr\u00e9tne doby chladenia<\/strong><\/li><li>Vytv\u00e1ra <strong>krivka pevnosti pri teplej pri\u013enavosti v z\u00e1vislosti od \u010dasu<\/strong><\/li><li>Vhodn\u00e9 na podrobn\u00fa anal\u00fdzu spr\u00e1vania chladenia<\/li><\/ul><h3>Met\u00f3da B \u2013 Premenn\u00e9 oneskorenie<\/h3><ul><li>Opatrenia <strong>maxim\u00e1lna sila po uplynut\u00ed zvolen\u00e9ho oneskorenia<\/strong><\/li><li>R\u00fdchlej\u0161ie a jednoduch\u0161ie rutinn\u00e9 testovanie kvality<\/li><li>Ide\u00e1lne pre <strong>produk\u010dn\u00e9 prostredia<\/strong><\/li><\/ul><h2>Zp\u016fsoby poruchy pri sk\u00fa\u0161kach s hor\u00facim spojom<\/h2><p>Na spr\u00e1vny v\u00fdklad v\u00fdsledkov pod\u013ea normy ASTM F1921 je nevyhnutn\u00e9 pochopi\u0165 sp\u00f4soby oddelenia tesnenia. Rozdielne spr\u00e1vanie pri poruche poukazuj\u00fa na r\u00f4zne probl\u00e9my s materi\u00e1lom alebo procesom.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-63ec2a0 e-con-full e-flex e-con e-child\" data-id=\"63ec2a0\" data-element_type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-b7ab802 e-con-full e-grid e-con e-child\" data-id=\"b7ab802\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-34fc5c5 elementor-widget__width-inherit elementor-position-top elementor-widget elementor-widget-image-box\" data-id=\"34fc5c5\" data-element_type=\"widget\" data-widget_type=\"image-box.default\">\n\t\t\t\t\t<div class=\"elementor-image-box-wrapper\"><figure class=\"elementor-image-box-img\"><img loading=\"lazy\" decoding=\"async\" width=\"162\" height=\"122\" src=\"https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/05\/Failure-Modes-in-Hot-Tack-Testing-1.webp\" class=\"attachment-large size-large wp-image-1284\" alt=\"Zp\u016fsoby poruchy pri sk\u00fa\u0161kach \u201ehot tack\u201c 1\" title=\"\" srcset=\"https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/05\/Failure-Modes-in-Hot-Tack-Testing-1.webp 162w, https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/05\/Failure-Modes-in-Hot-Tack-Testing-1-16x12.webp 16w\" sizes=\"(max-width: 162px) 100vw, 162px\" \/><\/figure><div class=\"elementor-image-box-content\"><h3 class=\"elementor-image-box-title\">Odlepovacia n\u00e1plas\u0165<\/h3><p class=\"elementor-image-box-description\"><p style=\"text-align: left\">K oddeleniu doch\u00e1dza na rozhran\u00ed medzi t\u00fdmito dvoma povrchmi.<br><b>Ozna\u010duje: <\/b>Nedostato\u010dn\u00e1 adh\u00e9zia medzi povrchmi alebo nedostato\u010dn\u00e9 teplo\/tlak.<\/p><\/p><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9691fc8 elementor-widget__width-inherit elementor-position-top elementor-widget elementor-widget-image-box\" data-id=\"9691fc8\" data-element_type=\"widget\" data-widget_type=\"image-box.default\">\n\t\t\t\t\t<div class=\"elementor-image-box-wrapper\"><figure class=\"elementor-image-box-img\"><img loading=\"lazy\" decoding=\"async\" width=\"162\" height=\"122\" src=\"https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/05\/Failure-Modes-in-Hot-Tack-Testing-2.webp\" class=\"attachment-large size-large wp-image-1285\" alt=\"Zp\u016fsoby poruchy pri sk\u00fa\u0161kach \u201ehot tack\u201c 2\" title=\"\" srcset=\"https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/05\/Failure-Modes-in-Hot-Tack-Testing-2.webp 162w, https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/05\/Failure-Modes-in-Hot-Tack-Testing-2-16x12.webp 16w\" sizes=\"(max-width: 162px) 100vw, 162px\" \/><\/figure><div class=\"elementor-image-box-content\"><h3 class=\"elementor-image-box-title\">S\u00fadr\u017en\u00fd l\u00fapac\u00ed prostriedok<\/h3><p class=\"elementor-image-box-description\"><p style=\"text-align: left\">K poruche doch\u00e1dza v jednej z polym\u00e9rnych vrstiev.<br><b>Ozna\u010duje:<\/b> Siln\u00e1 medzif\u00e1zov\u00e1 v\u00e4zba; zlyh\u00e1 samotn\u00fd materi\u00e1l.<\/p><\/p><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b8ab6b4 elementor-widget__width-inherit elementor-position-top elementor-widget elementor-widget-image-box\" data-id=\"b8ab6b4\" data-element_type=\"widget\" data-widget_type=\"image-box.default\">\n\t\t\t\t\t<div class=\"elementor-image-box-wrapper\"><figure class=\"elementor-image-box-img\"><img loading=\"lazy\" decoding=\"async\" width=\"162\" height=\"122\" src=\"https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/05\/Failure-Modes-in-Hot-Tack-Testing-3.webp\" class=\"attachment-large size-large wp-image-1286\" alt=\"Zp\u016fsoby poruchy pri sk\u00fa\u0161kach \u201ehot tack\u201c 3\" title=\"\" srcset=\"https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/05\/Failure-Modes-in-Hot-Tack-Testing-3.webp 162w, https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/05\/Failure-Modes-in-Hot-Tack-Testing-3-16x12.webp 16w\" sizes=\"(max-width: 162px) 100vw, 162px\" \/><\/figure><div class=\"elementor-image-box-content\"><h3 class=\"elementor-image-box-title\">Delamin\u00e1cia<\/h3><p class=\"elementor-image-box-description\"><p style=\"text-align: left\">Oddelenie medzi vrstvami viacvrstvovej \u0161trukt\u00fary. <br><b>Ozna\u010duje:<\/b> Slab\u00e1 v\u00e4zba medzi vrstvami v laminovan\u00fdch materi\u00e1loch.<\/p><\/p><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-90ba3b6 elementor-widget__width-inherit elementor-position-top elementor-widget elementor-widget-image-box\" data-id=\"90ba3b6\" data-element_type=\"widget\" data-widget_type=\"image-box.default\">\n\t\t\t\t\t<div class=\"elementor-image-box-wrapper\"><figure class=\"elementor-image-box-img\"><img loading=\"lazy\" decoding=\"async\" width=\"162\" height=\"122\" src=\"https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/05\/Failure-Modes-in-Hot-Tack-Testing-4.webp\" class=\"attachment-large size-large wp-image-1287\" alt=\"Zp\u016fsoby poruchy pri sk\u00fa\u0161kach \u201ehot tack\u201c 4\" title=\"\" srcset=\"https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/05\/Failure-Modes-in-Hot-Tack-Testing-4.webp 162w, https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/05\/Failure-Modes-in-Hot-Tack-Testing-4-16x12.webp 16w\" sizes=\"(max-width: 162px) 100vw, 162px\" \/><\/figure><div class=\"elementor-image-box-content\"><h3 class=\"elementor-image-box-title\">Preru\u0161enie materi\u00e1lu<\/h3><p class=\"elementor-image-box-description\"><p style=\"text-align: left\">Film sa odtrh\u00e1va od oblasti tesnenia<br><b>Ozna\u010duje:<\/b> Tesnenie je pevnej\u0161ie ako podklad.<\/p><\/p><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f67fd38 elementor-widget__width-inherit elementor-position-top elementor-widget elementor-widget-image-box\" data-id=\"f67fd38\" data-element_type=\"widget\" data-widget_type=\"image-box.default\">\n\t\t\t\t\t<div class=\"elementor-image-box-wrapper\"><figure class=\"elementor-image-box-img\"><img loading=\"lazy\" decoding=\"async\" width=\"162\" height=\"122\" src=\"https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/05\/Failure-Modes-in-Hot-Tack-Testing-5.webp\" class=\"attachment-large size-large wp-image-1288\" alt=\"Zp\u016fsoby poruchy pri sk\u00fa\u0161kach \u201ehot tack\u201c 5\" title=\"\" srcset=\"https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/05\/Failure-Modes-in-Hot-Tack-Testing-5.webp 162w, https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/05\/Failure-Modes-in-Hot-Tack-Testing-5-16x12.webp 16w\" sizes=\"(max-width: 162px) 100vw, 162px\" \/><\/figure><div class=\"elementor-image-box-content\"><h3 class=\"elementor-image-box-title\">Dia\u013ekov\u00e9 preru\u0161enie<\/h3><p class=\"elementor-image-box-description\"><p style=\"text-align: left\">K poruche doch\u00e1dza v mieste vzdialenom od tesnenia.<br><b>Ozna\u010duje:<\/b> Tesnenie je ove\u013ea pevnej\u0161ie ako samotn\u00fd materi\u00e1l.<\/p><\/p><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b467121 elementor-widget__width-inherit elementor-position-top elementor-widget elementor-widget-image-box\" data-id=\"b467121\" data-element_type=\"widget\" data-widget_type=\"image-box.default\">\n\t\t\t\t\t<div class=\"elementor-image-box-wrapper\"><figure class=\"elementor-image-box-img\"><img loading=\"lazy\" decoding=\"async\" width=\"162\" height=\"122\" src=\"https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/05\/Failure-Modes-in-Hot-Tack-Testing-6.webp\" class=\"attachment-large size-large wp-image-1289\" alt=\"Re\u017eimy zlyhania pri sk\u00fa\u0161kach \u201ehot tack\u201c 6\" title=\"\" srcset=\"https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/05\/Failure-Modes-in-Hot-Tack-Testing-6.webp 162w, https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/05\/Failure-Modes-in-Hot-Tack-Testing-6-16x12.webp 16w\" sizes=\"(max-width: 162px) 100vw, 162px\" \/><\/figure><div class=\"elementor-image-box-content\"><h3 class=\"elementor-image-box-title\">Pred\u013a\u017eenie materi\u00e1lu<\/h3><p class=\"elementor-image-box-description\"><p style=\"text-align: left\">Nezape\u010daten\u00fd materi\u00e1l sa pred prasknut\u00edm v\u00fdrazne natiahne.<br><b>Ozna\u010duje:<\/b> Vysok\u00e1 \u0165a\u017enos\u0165 a pru\u017enos\u0165 f\u00f3lie.<\/p><\/p><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-17b150b elementor-widget__width-inherit elementor-position-top elementor-widget elementor-widget-image-box\" data-id=\"17b150b\" data-element_type=\"widget\" data-widget_type=\"image-box.default\">\n\t\t\t\t\t<div class=\"elementor-image-box-wrapper\"><figure class=\"elementor-image-box-img\"><img loading=\"lazy\" decoding=\"async\" width=\"162\" height=\"122\" src=\"https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/05\/Failure-Modes-in-Hot-Tack-Testing-7.webp\" class=\"attachment-large size-large wp-image-1290\" alt=\"Zp\u016fsoby poruchy pri sk\u00fa\u0161kach \u201ehot tack\u201c 7\" title=\"\" srcset=\"https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/05\/Failure-Modes-in-Hot-Tack-Testing-7.webp 162w, https:\/\/www.packtests.com\/wp-content\/uploads\/2026\/05\/Failure-Modes-in-Hot-Tack-Testing-7-16x12.webp 16w\" sizes=\"(max-width: 162px) 100vw, 162px\" \/><\/figure><div class=\"elementor-image-box-content\"><h3 class=\"elementor-image-box-title\">L\u00fapanie s pred\u013a\u017een\u00edm<\/h3><p class=\"elementor-image-box-description\"><p style=\"text-align: left\">Odlupovanie sprev\u00e1dzan\u00e9 v\u00fdrazn\u00fdm pred\u013a\u017een\u00edm neuzavret\u00e9ho materi\u00e1lu.<br><b>Ozna\u010duje:<\/b> Kombin\u00e1cia zlyhania lepenia a \u0165a\u017enosti materi\u00e1lu.<\/p><\/p><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-544c157 elementor-widget elementor-widget-text-editor\" data-id=\"544c157\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>Vytvorenie krivky \u201ehot tack\u201c na \u00fa\u010dely optimaliz\u00e1cie procesu<\/h2><p>A <strong>krivka tepelnej pri\u013enavosti<\/strong> graf zn\u00e1zor\u0148uje z\u00e1vislos\u0165 pevnosti tesnenia od teploty. Pom\u00e1ha ur\u010di\u0165:<\/p><ul><li>Po\u010diato\u010dn\u00e1 teplota tesnenia (SIT)<\/li><li>Okno s optim\u00e1lnym tesnen\u00edm<\/li><li>Maxim\u00e1lna pevnos\u0165 pri teplej adh\u00e9zii<\/li><\/ul><p>Tieto \u00fadaje umo\u017e\u0148uj\u00fa in\u017einierom <strong>dola\u010fova\u0165 parametre tesnenia s cie\u013eom dosiahnu\u0165 konzistentn\u00fd v\u00fdkon balenia<\/strong>.<\/p><h2>\u010casto kladen\u00e9 ot\u00e1zky t\u00fdkaj\u00face sa normy ASTM F1921<\/h2><ol><li><strong> Ak\u00fd je hlavn\u00fd \u00fa\u010del normy ASTM F1921?<\/strong><br \/>Vyhodnocuje <strong>pevnos\u0165 termoplastick\u00fdch tesnen\u00ed v \u0165ahu bezprostredne po zape\u010daten\u00ed<\/strong>, \u010d\u00edm sa zabezpe\u010duje spo\u013eahlivos\u0165 balenia po\u010das v\u00fdroby.<\/li><li><strong> V \u010dom sa norma ASTM F1921 l\u00ed\u0161i od normy ASTM F88?<\/strong><br \/><a href=\"https:\/\/store.astm.org\/f1921_f1921m-12r23.html\" target=\"_blank\" rel=\"noopener nofollow\">ASTM F1921<\/a> opatrenia <strong>pevnos\u0165 tepeln\u00e9ho zvaru<\/strong>, zatia\u013e \u010do norma ASTM F88 meria <strong>pevnos\u0165 studen\u00e9ho zvaru<\/strong> po vychladnut\u00ed.<\/li><li><strong> Ktor\u00e9 odvetvia vyu\u017e\u00edvaj\u00fa testovanie pri vysokej teplote?<\/strong><br \/>Potravin\u00e1rsky, farmaceutick\u00fd, zdravotn\u00edcky a odvetvie flexibiln\u00fdch obalov sa vo ve\u013ekej miere spoliehaj\u00fa na t\u00fato sk\u00fa\u0161ku.<\/li><li><strong> Ak\u00fd je rozdiel medzi met\u00f3dou A a met\u00f3dou B?<\/strong><br \/>Met\u00f3da A meria silu v priebehu \u010dasu; met\u00f3da B zaznamen\u00e1va maxim\u00e1lnu silu po uplynut\u00ed ur\u010dit\u00e9ho \u010dasu.<\/li><li><strong> Pre\u010do je pri procesoch FFS d\u00f4le\u017eit\u00e1 pri\u013enavos\u0165 za tepla?<\/strong><br \/>Ke\u017ee tesnenia s\u00fa pred ochladen\u00edm vystaven\u00e9 nam\u00e1haniu, nedostato\u010dn\u00e1 teplotn\u00e1 pri\u013enavos\u0165 m\u00f4\u017ee sp\u00f4sobi\u0165 <strong>porucha tesnenia po\u010das balenia<\/strong>.<\/li><\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>ASTM F1921 a met\u00f3da sk\u00fa\u0161ky \u201ehot tack\u201c Norma ASTM F1921 definuje laborat\u00f3rnu met\u00f3du merania pevnosti tepeln\u00fdch zvarov bezprostredne po ich vytvoren\u00ed, e\u0161te predt\u00fdm, ako materi\u00e1l vychladne na okoln\u00fa teplotu. T\u00e1to vlastnos\u0165 \u2013 zn\u00e1ma ako pevnos\u0165 pri hor\u00facom zvaren\u00ed \u2013 je k\u013e\u00fa\u010dov\u00e1 v prostrediach vysokor\u00fdchlostn\u00e9ho balenia, najm\u00e4 v procesoch formovania, plnenia a zv\u00e1rania (FFS). Sk\u00fa\u0161obn\u00e1 met\u00f3da pevnosti pri hor\u00facom zvaren\u00ed simuluje skuto\u010dn\u00e9 podmienky zv\u00e1rania t\u00fdm, \u017ee [\u2026]<\/p>","protected":false},"featured_media":0,"parent":0,"template":"","meta":{"_acf_changed":false},"standard-category":[64],"class_list":["post-1261","standard","type-standard","status-publish","hentry","standard-category-astm"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.packtests.com\/sk\/wp-json\/wp\/v2\/standard\/1261","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\/1261\/revisions"}],"predecessor-version":[{"id":1297,"href":"https:\/\/www.packtests.com\/sk\/wp-json\/wp\/v2\/standard\/1261\/revisions\/1297"}],"wp:attachment":[{"href":"https:\/\/www.packtests.com\/sk\/wp-json\/wp\/v2\/media?parent=1261"}],"wp:term":[{"taxonomy":"standard-category","embeddable":true,"href":"https:\/\/www.packtests.com\/sk\/wp-json\/wp\/v2\/standard-category?post=1261"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}