{"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\/lt\/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>ASTM F1921 ir kar\u0161tojo sukibimo bandymo metodas<\/h2><p>Standarte ASTM F1921 apibr\u0117\u017eiamas <strong>laboratorinis metodas, skirtas \u0161ilumini\u0173 suvirinimo si\u016bli\u0173 stiprumui matuoti i\u0161kart po j\u0173 suformavimo<\/strong>, kol med\u017eiaga neatv\u0117s iki aplinkos temperat\u016bros. \u0160i savyb\u0117, \u017einoma kaip <em>kar\u0161tojo sukibimo stipris<\/em>\u2014yra itin svarbus greitojo pakavimo aplinkose, ypa\u010d <strong>form-fill-seal (FFS)<\/strong> procesai.<\/p><p>Svetain\u0117 <strong>kar\u0161tojo sukibimo bandymo metodas<\/strong> imituoja tikras sandarinimo s\u0105lygas, termoplastin\u0117ms pl\u0117vel\u0117ms taikant kontroliuojam\u0105 \u0161ilum\u0105 ir sl\u0117g\u012f.<\/p><p>Skirtingai nuo \u012fprastini\u0173 sandarumo bandym\u0173, atliekam\u0173 kambario temperat\u016broje, pagal ASTM F1921 standart\u0105 ir \u201ehot tack\u201c bandymo metod\u0105 vertinama <strong>realiu laiku atliekamas sandarumo patikrinimas esant terminiam poveikiui<\/strong>, tod\u0117l tai yra labai svarbu gamybos stabilumui ir pakavimo patikimumui.<\/p><h2>Kar\u0161tojo sukibimo bandymo procesas<\/h2><p>Standartas ASTM F1921 nustato terminio suvirinimo stiprum\u0105 i\u0161kart po jo suformavimo. Bandymo ciklas apima suvirinim\u0105, spaustuv\u0173 atidarym\u0105, i\u0161traukim\u0105, pauz\u0119\/au\u0161inim\u0105 ir spaustuv\u0173 atskyrim\u0105, kad b\u016bt\u0173 galima i\u0161matuoti j\u0117g\u0105.<\/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=\"Kar\u0161tojo sukibimo bandymo procesas: 1 sandariklis\" 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. Antspaudas<\/h3><p class=\"elementor-image-box-description\">Dvi juostel\u0117s yra u\u017esandarinamos esant nustatytai temperat\u016brai, sl\u0117giui ir i\u0161laikymo trukmei.<\/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=\"Kar\u0161tojo sukibimo bandymo procesas 2: atviros gnybtuv\u0117s\" 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. \u201eOpen Jaws\u201c<\/h3><p class=\"elementor-image-box-description\">\u017dandikauliai atsiveria ir u\u017esandarinta zona atsilaisvina.<\/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=\"Kar\u0161tojo sukibimo bandymo procesas 3. I\u0161traukimas\" 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. Pasiimti<\/h3><p class=\"elementor-image-box-description\">M\u0117ginys automati\u0161kai i\u0161traukiamas i\u0161 spaustuv\u0173.<\/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=\"Kar\u0161tojo sukibimo bandymo procesas 4. Atid\u0117tas au\u0161inimas\" 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. V\u0117lavimas \/ Au\u0161inimas<\/h3><p class=\"elementor-image-box-description\">Atidarius \u017eandikaulius prasideda i\u0161 anksto nustatytas u\u017edelsimas (au\u0161inimo laikas).<\/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=\"Kar\u0161tojo sukibimo bandymo procesas 5. Atskyrimas ir matavimas\" 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. Atskirti ir pasverti<\/h3><p class=\"elementor-image-box-description\">Grybai atsiskiria pastoviu grei\u010diu, o j\u0117ga, reikalinga sandarumui nutraukti, matuojama iki tol, kol sandarumas nutr\u016bksta.<\/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>Pagrindiniai kintamieji atliekant ASTM F1921 bandymus<\/h2><ul><li><strong>Sandarinimo temperat\u016bra:<\/strong> Paprastai kei\u010diama, siekiant suformuoti \u201ehot tack\u201c kreiv\u0119<\/li><li><strong>Buvimo trukm\u0117:<\/strong><ul><li>\u226425 \u00b5m pl\u0117vel\u0117s: ~0,5 s<\/li><li>25\u201364 \u00b5m pl\u0117vel\u0117s: ~1,0 s<\/li><li>64 \u00b5m pl\u0117vel\u0117s: ~2,5 s<\/li><\/ul><\/li><li><strong>Sandarinimo sl\u0117gis:<\/strong> 15\u201330 N\/cm\u00b2<\/li><li><strong>Au\u0161inimo trukm\u0117 \/ u\u017edelsimo trukm\u0117:<\/strong> Nustato matavimo trukm\u0119<\/li><li><strong>Atskyrimo greitis:<\/strong> Paprastai 200 mm\/min (A metodas)<\/li><\/ul><p>\u0160ie parametrai tiesiogiai \u012ftakoja galutin\u012f rezultat\u0105 <strong>lanks\u010diosios pakuot\u0117s kar\u0161tojo u\u017esandarinimo stiprumas<\/strong> med\u017eiagos.<\/p><h2>Kar\u0161tojo sukibimo testeris: b\u016btina \u012franga pagal ASTM F1921 standart\u0105<\/h2><p>A <strong>kar\u0161tojo sukibimo testeris<\/strong> yra specialiai sukurta siekiant atkartoti sandarinimo ir greito atpl\u0117\u0161imo proces\u0105, apibr\u0117\u017et\u0105 standarte ASTM F1921. Pa\u017eangios sistemos, pavyzd\u017eiui, tokios, kurias suk\u016br\u0117 \u201eCell Instruments Co., Ltd.\u201c, si\u016blo:<\/p><ul><li><strong>PLC pagr\u012fstos valdymo sistemos<\/strong> siekiant u\u017etikrinti pakartojamum\u0105<\/li><li><strong>PID temperat\u016bros reguliavimas (tikslumas \u00b10,2 \u00b0C)<\/strong><\/li><li><strong>Automatizuoti bandym\u0173 ciklai<\/strong> pa\u0161alinant operatoriaus \u012ftak\u0105<\/li><li><strong>Reguliuojami bandym\u0173 grei\u010diai ir sl\u0117giai<\/strong><\/li><li><strong>Auk\u0161tos skiriamosios gebos j\u0117gos matavimas<\/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>Rekomenduojamas sprendimas<\/h3><p>\u201eCell Instruments HTT\u201c serija palaiko:<\/p><ul><li><strong>A metodas (fiksuotas v\u0117lavimas)<\/strong> ir <strong>B metodas (kintamasis u\u017edelsimas)<\/strong><\/li><li>\u012evair\u016bs bandym\u0173 re\u017eimai: lipnumo, atpl\u0117\u0161imo, tempimo, terminio suvirinimo<\/li><li>Greitaeigiai bandymai iki <strong>12 000 mm\/min<\/strong> (HTT-02)<\/li><\/ul><p>\u0160is lankstumas leid\u017eia tiksliai nustatyti \u012fvairi\u0173 med\u017eiag\u0173 savybes ir sandarinimo ypatumus.<\/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=\"ASTM F1921 kar\u0161tojo sukibimo bandymo \u012frenginys\" 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>Lanks\u010diosios pakuot\u0117s kar\u0161tojo sandarinimo stiprumas<\/strong><\/h2><p>Svetain\u0117 <strong>lanks\u010diosios pakuot\u0117s kar\u0161tojo u\u017esandarinimo stiprumas<\/strong> nustato, ar pakuot\u0117 gali atlaikyti apkrov\u0105 i\u0161kart po u\u017esandarinimo. Silpnas kar\u0161tasis sukibimas gali sukelti:<\/p><ul><li>Plombos atidarymas pildymo metu<\/li><li>Produkto u\u017eter\u0161imas arba nuot\u0117kis<\/li><li>Suma\u017e\u0117j\u0119s pakavimo efektyvumas<\/li><li>Padid\u0117j\u0119s atliek\u0173 kiekis ir prastov\u0173 trukm\u0117<\/li><\/ul><p>Standartas ASTM F1921 padeda gamintojams:<\/p><ul><li><strong>Med\u017eiag\u0173 eksploatacini\u0173 savybi\u0173 vertinimas<\/strong><\/li><li><strong>Optimizuoti sandarinimo parametrus<\/strong><\/li><li><strong>U\u017etikrinti proces\u0173 patikimum\u0105 FFS operacijose<\/strong><\/li><\/ul><h2>ASTM F1921 bandym\u0173 metodai<br \/>\u2014A metodas prie\u0161 B metod\u0105<\/h2><p>Standarte ASTM F1921 numatyti du skirtingi metodai:<\/p><h3>A metodas \u2013 fiksuotas u\u017edelsimas<\/h3><ul><li>Matuoja sandarumo stiprum\u0105 esant <strong>konkret\u016bs au\u0161inimo laikai<\/strong><\/li><li>Sukuria <strong>kar\u0161tojo sukibimo stiprumo ir laiko kreiv\u0117<\/strong><\/li><li>Tinka i\u0161samiai analizuoti au\u0161inimo procesus<\/li><\/ul><h3>B metodas \u2013 kintamasis u\u017edelsimas<\/h3><ul><li>Priemon\u0117s <strong>maksimali j\u0117ga po pasirinktos pauz\u0117s<\/strong><\/li><li>Greitesnis ir paprastesnis \u012fprastini\u0173 kokyb\u0117s kontrol\u0117s tyrim\u0173 atlikimas<\/li><li>Puikiai tinka <strong>gamybin\u0117s aplinkos<\/strong><\/li><\/ul><h2>Gedim\u0173 tipai atliekant \u201eHot Tack\u201c bandymus<\/h2><p>Norint teisingai interpretuoti ASTM F1921 tyrimo rezultatus, b\u016btina suprasti sandariklio atsiskyrimo b\u016bdus. Skirtingi gedim\u0173 po\u017eymiai rodo skirtingas med\u017eiagos ar gamybos proceso problemas.<\/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=\"Gedim\u0173 tipai atliekant \u201eHot Tack\u201c bandymus 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\">Lipnios pl\u0117vel\u0117s nu\u0117mimas<\/h3><p class=\"elementor-image-box-description\"><p style=\"text-align: left\">Atsiskyrimas vyksta dviej\u0173 pavir\u0161i\u0173 s\u0105sajoje.<br><b>Nurodo: <\/b>Prastas s\u0105sajos sukibimas arba nepakankamas \u0161ilumos ir sl\u0117gio poveikis.<\/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=\"Gedim\u0173 tipai atliekant \u201eHot Tack\u201c bandymus 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\">\u201eCohesive Peel\u201c<\/h3><p class=\"elementor-image-box-description\"><p style=\"text-align: left\">Gedimas atsiranda viename i\u0161 polimero sluoksni\u0173.<br><b>Nurodo:<\/b> Stiprus s\u0105sajos ry\u0161ys; pati med\u017eiaga sugenda.<\/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=\"Gedim\u0173 tipai atliekant \u201eHot Tack\u201c bandymus 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\">Sluoksni\u0173 atsiskyrimas<\/h3><p class=\"elementor-image-box-description\"><p style=\"text-align: left\">Daugiasluoksn\u0117s strukt\u016bros sluoksni\u0173 tarpas. <br><b>Nurodo:<\/b> Silpnas sluoksni\u0173 tarpusavio sukibimas sluoksniuotose med\u017eiagose.<\/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=\"Gedim\u0173 tipai atliekant \u201eHot Tack\u201c bandymus 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\">Med\u017eiagos pertrauka<\/h3><p class=\"elementor-image-box-description\"><p style=\"text-align: left\">Pl\u0117vel\u0117 atsiskiria nuo sandarinimo zonos<br><b>Nurodo:<\/b> Sandariklis yra tvirtesnis u\u017e pagrind\u0105.<\/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=\"Gedim\u0173 tipai atliekant \u201eHot Tack\u201c bandymus 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\">Nuotolinis pertraukimas<\/h3><p class=\"elementor-image-box-description\"><p style=\"text-align: left\">L\u016b\u017eis \u012fvyksta toli nuo sandariklio.<br><b>Nurodo:<\/b> Sandariklis yra daug tvirtesnis u\u017e pa\u010di\u0105 med\u017eiag\u0105.<\/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=\"Gedim\u0173 tipai atliekant \u201eHot Tack\u201c bandymus 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\">Med\u017eiagos pailg\u0117jimas<\/h3><p class=\"elementor-image-box-description\"><p style=\"text-align: left\">Neu\u017esandarinta med\u017eiaga prie\u0161 tr\u016bkstant gerokai i\u0161sitempia.<br><b>Nurodo:<\/b> Didelis pl\u0117vel\u0117s plasti\u0161kumas ir lankstumas.<\/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=\"Gedim\u0173 tipai atliekant \u201eHot Tack\u201c bandymus 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\">Nulupimas su pailg\u0117jimu<\/h3><p class=\"elementor-image-box-description\"><p style=\"text-align: left\">Atsilupimas, kur\u012f lydi \u017eymus neu\u017esandarintos med\u017eiagos pailg\u0117jimas.<br><b>Nurodo:<\/b> Klij\u0173 nesukibimo ir med\u017eiagos plasti\u0161kumo s\u0105veika.<\/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>\u201eHot Tack\u201c kreiv\u0117s sudarymas proces\u0173 optimizavimui<\/h2><p>A <strong>kar\u0161tojo sukibimo kreiv\u0117<\/strong> diagramoje pavaizduotas sandariklio stiprumo priklausomyb\u0117 nuo temperat\u016bros. Tai padeda nustatyti:<\/p><ul><li>Sandariklio suveikimo temperat\u016bra (SIT)<\/li><li>Optimalus lango sandarumas<\/li><li>Maksimalus kar\u0161tojo sukibimo stipris<\/li><\/ul><p>\u0160ie duomenys leid\u017eia in\u017einieriams <strong>patobulinti sandarinimo parametrus, siekiant u\u017etikrinti pastov\u0173 pakavimo na\u0161um\u0105<\/strong>.<\/p><h2>Da\u017enai u\u017eduodami klausimai apie ASTM F1921<\/h2><ol><li><strong> Koks yra pagrindinis ASTM F1921 standarto tikslas?<\/strong><br \/>Jame vertinama <strong>termoplastini\u0173 sandarikli\u0173 sukibimo stipris i\u0161kart po sandarinimo<\/strong>, u\u017etikrinant pakuo\u010di\u0173 patikimum\u0105 gamybos metu.<\/li><li><strong> Kuo ASTM F1921 skiriasi nuo ASTM F88?<\/strong><br \/><a href=\"https:\/\/store.astm.org\/f1921_f1921m-12r23.html\" target=\"_blank\" rel=\"noopener nofollow\">ASTM F1921<\/a> priemon\u0117s <strong>kar\u0161tojo suvirinimo stiprumas<\/strong>, o pagal ASTM F88 standart\u0105 matuojama <strong>\u0161altojo suvirinimo stiprumas<\/strong> atv\u0117sinus.<\/li><li><strong> Kokiose pramon\u0117s \u0161akose taikomi \u201ehot tack\u201c bandymai?<\/strong><br \/>Maisto, farmacijos, medicinos prietais\u0173 ir lanks\u010diosios pakuot\u0117s pramon\u0117s \u0161akos labai pasikliauja \u0161iuo bandymu.<\/li><li><strong> Kuo skiriasi A metodas nuo B metodo?<\/strong><br \/>A metodu matuojamas stiprumas laikui b\u0117gant; B metodu registruojama did\u017eiausia j\u0117ga po tam tikro laiko.<\/li><li><strong> Kod\u0117l \u201ehot tack\u201c yra svarbus FFS procesuose?<\/strong><br \/>Kadangi sandarikliai prie\u0161 au\u0161inim\u0105 patiria \u012ftamp\u0105, nepakankamas kar\u0161tojo sukibimo stiprumas gali sukelti <strong>plombos pa\u017eeidimas pakavimo metu<\/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 and Hot Tack Test Method ASTM F1921 defines a laboratory method for measuring the strength of heat seals immediately after formation, before the material cools to ambient temperature. This property\u2014known as hot tack strength\u2014is critical in high-speed packaging environments, especially form-fill-seal (FFS) processes. The hot tack test method simulates actual sealing conditions by [&hellip;]<\/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\/lt\/wp-json\/wp\/v2\/standard\/1261","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.packtests.com\/lt\/wp-json\/wp\/v2\/standard"}],"about":[{"href":"https:\/\/www.packtests.com\/lt\/wp-json\/wp\/v2\/types\/standard"}],"version-history":[{"count":5,"href":"https:\/\/www.packtests.com\/lt\/wp-json\/wp\/v2\/standard\/1261\/revisions"}],"predecessor-version":[{"id":1297,"href":"https:\/\/www.packtests.com\/lt\/wp-json\/wp\/v2\/standard\/1261\/revisions\/1297"}],"wp:attachment":[{"href":"https:\/\/www.packtests.com\/lt\/wp-json\/wp\/v2\/media?parent=1261"}],"wp:term":[{"taxonomy":"standard-category","embeddable":true,"href":"https:\/\/www.packtests.com\/lt\/wp-json\/wp\/v2\/standard-category?post=1261"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}