{"id":6737,"date":"2025-07-09T10:52:25","date_gmt":"2025-07-09T02:52:25","guid":{"rendered":"https:\/\/www.qualitester.com\/?page_id=6737"},"modified":"2025-07-09T10:56:51","modified_gmt":"2025-07-09T02:56:51","slug":"astm-f1921","status":"publish","type":"page","link":"https:\/\/www.qualitester.com\/et\/standards\/astm-f1921\/","title":{"rendered":"ASTM F1921"},"content":{"rendered":"<h1 style=\"padding-left: 40px; text-align: center;\">ASTM D1921<br \/>\n<small>Hot Tack testimine<\/small><\/h1>\n<p>Kaasaegses pakendamisel, eriti kiirtoimeliste vormimis-t\u00e4itmis-sulgemise (FFS) rakenduste puhul, on termoplastiliste kilede kuumkleepuvuse tagamine \u00fclioluline, et v\u00e4ltida sulgemisvigade tekkimist k\u00e4itlemise k\u00e4igus. ASTM F1921 katsemeetod pakub standardiseeritud protseduuri kuumkleepimise tugevuse m\u00f5\u00f5tmiseks enne, kui see on jahtunud. K\u00e4esolevas juhendis selgitatakse, kuidas teostada kuumkleepimiskatset vastavalt standardile ASTM F1921 ning kuidas sellised seadmed nagu Cell Instrumentsi kuumkleepimiskatseaparaat toetavad j\u00e4rjepidevat ja usaldusv\u00e4\u00e4rset katsetamist.<\/p>\n<hr \/>\n<h2>ASTM F1921 standardi m\u00f5istmine: eesm\u00e4rk ja t\u00e4htsus<\/h2>\n<p>ASTM F1921 on ASTM Internationali poolt v\u00e4lja t\u00f6\u00f6tatud laialdaselt tunnustatud standard, mille abil m\u00e4\u00e4ratakse paindpakendites kasutatavate termoplastiliste kilede kuumkleepuvus. Vormimis-, t\u00e4itmis- ja sulgemisprotsessides avaldatakse sulgemiskohtadele sageli koormust veel soojas olekus. N\u00f5rk kuumsulgemine v\u00f5ib rebeneda, mille tagaj\u00e4rjeks v\u00f5ib olla toote kadu, pakendi rike v\u00f5i saastumine.<\/p>\n<p>See test on pakendamisinseneridele, kiletootjatele ja kvaliteedikontrollimeeskondadele h\u00e4davajalik, et:<\/p>\n<ul>\n<li>Hinda ja v\u00f5rdle filmi omadusi<\/li>\n<li>Tihendustingimuste optimeerimine<\/li>\n<li>Tagada protsessi j\u00e4rjepidevus ja toote terviklikkus<\/li>\n<\/ul>\n<hr \/>\n<h2>Kuumkleepuvuse katse ja kuumkleepuvuse tugevuse selgitus<\/h2>\n<p data-start=\"1619\" data-end=\"1887\">The <strong data-start=\"1623\" data-end=\"1640\">kuumkleepuvuse katse<\/strong> m\u00f5\u00f5dab maksimaalset j\u00f5udu, mis on vajalik kuumkleepimiskoha lahtit\u00f5mbamiseks, kui see on veel kuum. Seda omadust nimetatakse <strong data-start=\"1750\" data-end=\"1771\">kuumkleepimise tugevus<\/strong>, peegeldab materjali v\u00f5imet p\u00fcsida koos kohe p\u00e4rast sulgemist \u2013 enne t\u00e4ielikku kristalliseerumist v\u00f5i jahtumist.<\/p>\n<p data-start=\"1889\" data-end=\"1936\">Selle raames on kaks katsemeetodit <a href=\"https:\/\/store.astm.org\/f1921-98.html\" target=\"_blank\" rel=\"noopener nofollow\">ASTM F1921<\/a>:<\/p>\n<ul>\n<li data-start=\"1939\" data-end=\"2050\"><strong data-start=\"1939\" data-end=\"1965\">Meetod A (fikseeritud viivitus)<\/strong>: Enne kui haardid eraldavad hermeetiliselt suletud proovi, rakendub tootja poolt m\u00e4\u00e4ratud viivitusaeg.<\/li>\n<li data-start=\"2053\" data-end=\"2160\"><strong data-start=\"2053\" data-end=\"2082\">Meetod B (muutuv viivitus)<\/strong>: Kasutab kasutaja m\u00e4\u00e4ratud viivitusi, pakkudes suuremat paindlikkust erinevate materjalide puhul.<\/li>\n<\/ul>\n<hr \/>\n<h2>ASTM F1921 standardil p\u00f5hinev v\u00f5tme katsemenetlus<\/h2>\n<p data-start=\"2214\" data-end=\"2266\">Testimisprotsess koosneb j\u00e4rgmistest etappidest:<\/p>\n<ol>\n<li data-start=\"2271\" data-end=\"2297\"><strong data-start=\"2271\" data-end=\"2295\">Proovi ettevalmistamine<\/strong>\n<ul>\n<li>Laius: 15 mm, 25 mm v\u00f5i 1 toll<\/li>\n<li>Pikkus: 25\u201335 cm<\/li>\n<li>Suund: masina suund v\u00f5i ristisuund (tuleb dokumenteerida)<\/li>\n<li>Iga tingimuse kohta v\u00e4hemalt 3\u20135 proovi<\/li>\n<\/ul>\n<\/li>\n<li data-start=\"2477\" data-end=\"2498\"><strong data-start=\"2477\" data-end=\"2496\">Tihendusprotsess<\/strong>\n<ul>\n<li>Soojendatud klambrid avaldavad survet kahele \u00fcksteisega kattuvale kilelindile<\/li>\n<li>T\u00fc\u00fcpilised viibeaegad:<\/li>\n<li>\u226425 \u03bcm paksused kiled: 0,5 s<\/li>\n<li>25\u201364 \u03bcm paksused kiled: 1,0 s<\/li>\n<li>R\u00f5hk: 15\u201330 N\/cm\u00b2<\/li>\n<li>Temperatuur: algab tihendi aktiveerimistemperatuurist ja t\u00f5useb iga katse puhul 5\u201310 \u00b0C v\u00f5rra<\/li>\n<\/ul>\n<\/li>\n<li data-start=\"2775\" data-end=\"2805\"><strong data-start=\"2775\" data-end=\"2803\">Eraldamine ja m\u00f5\u00f5tmine<\/strong>\n<ul>\n<li>P\u00e4rast pitseerimist avanevad l\u00f5uad ja haardid t\u00f5mbavad pitseri automaatselt \u00fchtlase kiirusega lahti<\/li>\n<li>Seade salvestab <strong data-start=\"2939\" data-end=\"2978\">tihendi lahtit\u00f5mbamiseks vajalik j\u00f5ud<\/strong> (kuumkleepimise tugevus)<\/li>\n<\/ul>\n<\/li>\n<li data-start=\"3005\" data-end=\"3026\"><strong data-start=\"3005\" data-end=\"3024\">Andmete kogumine<\/strong>\n<ul>\n<li>Iga temperatuuri juures koostatakse kuumkleepuvuse k\u00f5ver<\/li>\n<li>Rikkeid (kestade eraldumine, kihistumine, venimine, rebimine) kontrollitakse visuaalselt ja dokumenteeritakse<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<div class=\"ast-oembed-container\" style=\"height: 100%;\"><iframe title=\"Mis on kuumkleepuvuse testija | ASTM F1921 | Kuumkleepuvuse ja koorimiskindluse testija\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/BrWEqIbLUgI?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<hr \/>\n<h2>Hot Tack-k\u00f5verate m\u00f5istmine<\/h2>\n<p data-start=\"3219\" data-end=\"3342\">A <strong data-start=\"3221\" data-end=\"3239\">kuumkleepimisk\u00f5ver<\/strong> on tihendi tugevuse graafiline esitus temperatuurivahemikus. Need k\u00f5verad aitavad kindlaks teha:<\/p>\n<ul>\n<li data-start=\"3345\" data-end=\"3375\">Optimaalsed tihendustemperatuurid<\/li>\n<li data-start=\"3378\" data-end=\"3398\">Tulemuslikkuse suundumused<\/li>\n<li data-start=\"3401\" data-end=\"3449\">Materjali piirangud k\u00f5rgel v\u00f5i madalal temperatuuril<\/li>\n<\/ul>\n<p data-start=\"3451\" data-end=\"3610\">K\u00f5vera p\u00f5hjalik anal\u00fc\u00fcs aitab pakendamisinseneridel valida sobivaid materjale ja kohandada masinate seadeid, et v\u00e4hendada tootmises esinevaid rikkeid.<\/p>\n<hr \/>\n<h2 data-start=\"3451\" data-end=\"3610\">Tavalised h\u00e4ired ja tihendite rikked<\/h2>\n<p>Sellised h\u00e4ired nagu <strong data-start=\"3683\" data-end=\"3699\">kihtide eraldumine<\/strong>, <strong data-start=\"3701\" data-end=\"3722\">ebat\u00e4ielik \u00fchinemine<\/strong>, v\u00f5i <strong data-start=\"3727\" data-end=\"3747\">katte \u00fclekandmine<\/strong> v\u00f5ib tulemusi moonutada. Standardis ASTM F1921 r\u00f5hutatakse iga proovi rikkeviisi dokumenteerimise t\u00e4htsust, et tagada kuumkleepuvuse omaduste t\u00e4pne t\u00f5lgendamine.<\/p>\n<hr \/>\n<h2>Soovitatav varustus: <a href=\"https:\/\/www.qualitester.com\/et\/\">Cell Instruments<\/a> Hot Tack Tester<\/h2>\n<p data-start=\"3964\" data-end=\"4158\"><a href=\"https:\/\/www.qualitester.com\/et\/toode\/heat-seal-material-film-hot-tack-property-test\/\"><img fetchpriority=\"high\" decoding=\"async\" class=\"alignright wp-image-6746 size-medium\" src=\"https:\/\/www.qualitester.com\/wp-content\/uploads\/2025\/07\/HTT-25.07.08-300x300.webp\" alt=\"ASTM F1921\" width=\"300\" height=\"300\" srcset=\"https:\/\/www.qualitester.com\/wp-content\/uploads\/2025\/07\/HTT-25.07.08-300x300.webp 300w, https:\/\/www.qualitester.com\/wp-content\/uploads\/2025\/07\/HTT-25.07.08-150x150.webp 150w, https:\/\/www.qualitester.com\/wp-content\/uploads\/2025\/07\/HTT-25.07.08-12x12.webp 12w, https:\/\/www.qualitester.com\/wp-content\/uploads\/2025\/07\/HTT-25.07.08-100x100.webp 100w, https:\/\/www.qualitester.com\/wp-content\/uploads\/2025\/07\/HTT-25.07.08.webp 600w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a>T\u00e4pse ja korratava tulemuse saavutamiseks <strong data-start=\"3998\" data-end=\"4012\">ASTM F1921<\/strong> Testimise valdkonnas pakub Cell Instruments t\u00e4ielikult automatiseeritud <strong data-start=\"4064\" data-end=\"4083\">kuuma kleepuvuse tester<\/strong> on loodud standardn\u00f5uete t\u00e4itmiseks ja \u00fcletamiseks. Peamised omadused on j\u00e4rgmised:<\/p>\n<ul>\n<li data-start=\"4162\" data-end=\"4243\">Kaks soojendatavat l\u00f5uendit, millel on t\u00e4pne reguleerimine <strong data-start=\"4200\" data-end=\"4241\">temperatuur, viibeaeg ja r\u00f5hk<\/strong><\/li>\n<li data-start=\"4246\" data-end=\"4314\">Automatiseeritud sulgemis- ja t\u00f5mbe ts\u00fckkel reaalajas <strong data-start=\"4291\" data-end=\"4312\">j\u00f5u m\u00f5\u00f5tmine<\/strong><\/li>\n<li data-start=\"4317\" data-end=\"4400\">Kasutajas\u00f5bralik kasutajaliides, millel on programmeeritavad viiteajare\u017eiimid j\u00e4rgmistele <strong data-start=\"4375\" data-end=\"4398\">nii meetod A kui ka B<\/strong><\/li>\n<li data-start=\"4403\" data-end=\"4481\">Loomine <strong data-start=\"4417\" data-end=\"4436\">kuumliimik\u00f5verad<\/strong> ning kvaliteedi tagamiseks vajalikud statistilised andmed<\/li>\n<\/ul>\n<p data-start=\"4483\" data-end=\"4624\">Seadme k\u00f5rge t\u00e4psus ja korratavus teevad selle ideaalseks <strong data-start=\"4552\" data-end=\"4574\">filmitootjad<\/strong>, <strong data-start=\"4576\" data-end=\"4593\">pakendite uurimis- ja arendustegevus<\/strong>, ja <strong data-start=\"4599\" data-end=\"4623\">kvaliteedikontrolli laborid<\/strong>.<\/p>\n<hr \/>\n<h2 data-start=\"4483\" data-end=\"4624\">T\u00e4pse kuumkleepuvuse katsetamise parimad tavad<\/h2>\n<ul>\n<li data-start=\"4683\" data-end=\"4759\">Kontrollige kile alati defektide, nagu geelid v\u00f5i sissel\u00f5iked, suhtes \u2013 visake vigased proovid \u00e4ra<\/li>\n<li data-start=\"4762\" data-end=\"4818\">Tagada korduste vahel \u00fchtlased tihendustingimused<\/li>\n<li data-start=\"4821\" data-end=\"4886\">M\u00e4rkige aruannetes selgelt \u00e4ra pitseri suund ja proovi m\u00f5\u00f5tmed<\/li>\n<li data-start=\"4889\" data-end=\"4956\">Keskmise arvutamiseks tuleb iga temperatuuripunkti kohta teha v\u00e4hemalt kolm kordust<\/li>\n<li data-start=\"4959\" data-end=\"5025\">V\u00e4ltige passiivseid vigu \u2013 kontrollige iga proovi rikkeviise k\u00e4sitsi<\/li>\n<\/ul>\n<hr \/>\n<h2>Kokkuv\u00f5te<\/h2>\n<p data-start=\"5048\" data-end=\"5504\">Standard ASTM F1921 pakub p\u00f5hjalikku ja korratavat metoodikat hindamiseks <strong data-start=\"5125\" data-end=\"5146\">kuumkleepimise tugevus<\/strong> termoplastilistes pakkekiledes. Selle standardi j\u00e4rgimise abil saavad kvaliteedikontrolli spetsialistid tagada pakendi vastupidavuse kiirel t\u00f6\u00f6tlemisel ja k\u00e4itlemisel. Kasutades t\u00e4ppisseadmeid, nagu <strong data-start=\"5347\" data-end=\"5384\">Cell Instruments\u2019 <a href=\"https:\/\/www.qualitester.com\/et\/toode\/hot-tack-tester-htt-02\/\">kuuma kleepuvuse tester<\/a><\/strong> suurendab veelgi katsete \u00fchtsust, muutes usaldusv\u00e4\u00e4rsete ja suure j\u00f5udlusega paindlike pakendilahenduste v\u00e4ljat\u00f6\u00f6tamise lihtsamaks.<\/p>","protected":false},"excerpt":{"rendered":"<p>ASTM D1921 kuumkleepuvuse katsetamine Kaasaegses pakendamisel, eriti kiirtoimeliste vormimis-t\u00e4itmis-sulgemise (FFS) rakenduste puhul, on termoplastiliste kilede kuumkleepuvuse tagamine \u00fclioluline, et v\u00e4ltida sulgemisvigade tekkimist k\u00e4itlemise ajal. ASTM F1921 katsemeetod pakub standardiseeritud protseduuri kuumkleepimise tugevuse m\u00f5\u00f5tmiseks enne, kui see on jahtunud. K\u00e4esolevas juhendis selgitatakse, kuidas \u2026<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/www.qualitester.com\/et\/standards\/astm-f1921\/\"> <span class=\"screen-reader-text\">ASTM F1921<\/span> Loe edasi \u00bb<\/a><\/p>","protected":false},"author":3,"featured_media":0,"parent":4948,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-global-header-display":"","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":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","footnotes":""},"class_list":["post-6737","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.qualitester.com\/et\/wp-json\/wp\/v2\/pages\/6737","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.qualitester.com\/et\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.qualitester.com\/et\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.qualitester.com\/et\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.qualitester.com\/et\/wp-json\/wp\/v2\/comments?post=6737"}],"version-history":[{"count":0,"href":"https:\/\/www.qualitester.com\/et\/wp-json\/wp\/v2\/pages\/6737\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/www.qualitester.com\/et\/wp-json\/wp\/v2\/pages\/4948"}],"wp:attachment":[{"href":"https:\/\/www.qualitester.com\/et\/wp-json\/wp\/v2\/media?parent=6737"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}