{"id":10317,"date":"2026-05-12T13:50:26","date_gmt":"2026-05-12T05:50:26","guid":{"rendered":"https:\/\/www.packqc.com\/?post_type=standard&#038;p=10317"},"modified":"2026-05-12T13:50:27","modified_gmt":"2026-05-12T05:50:27","slug":"astm-f1921","status":"publish","type":"standard","link":"https:\/\/www.packqc.com\/lt\/standard\/astm-f1921\/","title":{"rendered":"ASTM F1921"},"content":{"rendered":"<h2 class=\"wp-block-heading\">Kas yra ASTM F1921 ir kod\u0117l jis svarbus<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>ASTM F1921<\/strong> apibr\u0117\u017eia standartizuotas proced\u016bras, skirtas matuoti <strong>termoplastini\u0173 med\u017eiag\u0173 kar\u0161to sukibimo stipris<\/strong> i\u0161 karto po terminio sandarinimo ir prie\u0161 au\u0161inim\u0105. \u0160is parametras labai svarbus greito pakavimo aplinkoje, ypa\u010d <strong>forma-u\u017epildymas-u\u017edengimas (FFS)<\/strong> proces\u0173, kai sandarikliai turi atlaikyti \u012ftamp\u0105 dar kar\u0161ti.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Skirtingai nuo \u012fprastini\u0173 sandarumo bandym\u0173, ASTM F1921 \u012fvertina <strong>sandarinimo vientisumas realiuoju laiku gamybos s\u0105lygomis.<\/strong>, padedanti gamintojams i\u0161vengti sandarinimo gedim\u0173, nuot\u0117kio ir produkt\u0173 praradimo.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Pagrindin\u0117 vert\u0117:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Imituoja realias pakavimo s\u0105lygas<\/li>\n\n\n\n<li>\u012evertina sandariklio veikim\u0105 kritiniu au\u0161inimo etapu<\/li>\n\n\n\n<li>Med\u017eiag\u0173 parinkimas ir proceso optimizavimas<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Kar\u0161to klijavimo bandymas: Principai ir pramonin\u0117 reik\u0161m\u0117<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The <strong>kar\u0161to lipnumo bandymas<\/strong> matuoja j\u0117g\u0105, kurios reikia dviem sandarinamiems termoplastiniams pavir\u0161iams atskirti i\u0161 karto po sandarinimo. Atliekant bandym\u0105:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Dvi pl\u0117vel\u0117s juostos u\u017eklijuojamos kontroliuojant <strong>temperat\u016bra, sl\u0117gis ir buvimo laikas<\/strong><\/li>\n\n\n\n<li>Plomba i\u0161traukiama nustatytu grei\u010diu<\/li>\n\n\n\n<li>The <strong>did\u017eiausia j\u0117ga atsiskyrimo metu<\/strong> registruojamas kaip kar\u0161to sukibimo stipris<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Kod\u0117l tai svarbu pakuo\u010di\u0173 filmams:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Apsaugo nuo sandarinimo pa\u017eeidim\u0173 pildymo ir transportavimo metu<\/li>\n\n\n\n<li>U\u017etikrina pastovi\u0105 sandarinimo kokyb\u0119 didel\u0117s spartos linijose<\/li>\n\n\n\n<li>Palaikomas sandarinimo parametr\u0173 optimizavimas<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Tokiose pramon\u0117s \u0161akose kaip maisto, vaist\u0173 ir medicinini\u0173 pakuo\u010di\u0173 pramon\u0117 labai priklauso nuo tikslaus kar\u0161to lipnumo \u012fvertinimo, kad b\u016bt\u0173 u\u017etikrinta produkt\u0173 sauga ir atitiktis reikalavimams.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Pakuo\u010di\u0173 pl\u0117veli\u0173 kar\u0161to sukibimo bandymo metodas<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">ASTM F1921 nurodo <strong>du skirtingi bandym\u0173 metodai<\/strong>, kuri\u0173 kiekvienas tinka skirtingiems analiz\u0117s tikslams:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">A metodas (fiksuotas u\u017edelsimas)<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Matuoja kar\u0161to sukibimo stipr\u012f esant <strong>specifinis v\u0117sinimo laikas<\/strong><\/li>\n\n\n\n<li>generuoja <strong>sandarumo stiprumo priklausomyb\u0117s nuo laiko au\u0161inimo kreiv\u0117<\/strong><\/li>\n\n\n\n<li>Tipinis atskyrimo greitis: <strong>200 mm\/min<\/strong><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Geriausiai tinka:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Sandariklio stiprumo raidos tyrimas<\/li>\n\n\n\n<li>Med\u017eiag\u0173 au\u0161inimo savybi\u0173 palyginimas<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">B metodas (kintamas u\u017edelsimas)<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Priemon\u0117s <strong>did\u017eiausia j\u0117ga po nustatyto u\u017edelsimo<\/strong><\/li>\n\n\n\n<li>D\u0117mesys sutelkiamas \u012f did\u017eiausi\u0105 na\u0161um\u0105 konkre\u010diu momentu<\/li>\n\n\n\n<li>Tinka didel\u0117s spartos bandym\u0173 sistemoms<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Geriausiai tinka:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Greita kokyb\u0117s kontrol\u0117<\/li>\n\n\n\n<li>Gamybos linijos modeliavimas<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Kaip i\u0161matuoti kar\u0161tojo sukibimo stiprum\u0105<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Nor\u0117dami tiksliai nustatyti kar\u0161to sukibimo stipr\u012f pagal ASTM F1921, atlikite \u0161iuos strukt\u016brinius veiksmus:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. Nustatyti sandarinimo parametrus<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Temperat\u016bra:<\/strong> Inkrementiniai \u017eingsniai (paprastai 5-10 \u00b0C)<\/li>\n\n\n\n<li><strong>Sl\u0117gis:<\/strong> 15-30 N\/cm\u00b2<\/li>\n\n\n\n<li><strong>Dirbimo laikas:<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u226425 \u03bcm pl\u0117vel\u0117s: 0,5 s<\/li>\n\n\n\n<li>25-64 \u03bcm pl\u0117vel\u0117s: 1,0 s<\/li>\n\n\n\n<li>64 \u03bcm pl\u0117vel\u0117s: 2,5 s<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">2. Paruo\u0161kite m\u0117ginius<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Naudokite vienodas pl\u0117vel\u0117s juostas<\/li>\n\n\n\n<li>U\u017etikrinkite tinkam\u0105 i\u0161lyginim\u0105 ir sandarinimo pavir\u0161iaus orientacij\u0105<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">3. Atlikti bandym\u0173 cikl\u0105<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Prietaisas automati\u0161kai atlieka:\n<ul class=\"wp-block-list\">\n<li>Sandarinimas<\/li>\n\n\n\n<li>Atid\u0117jimas<\/li>\n\n\n\n<li>Rankenos atskyrimas<\/li>\n\n\n\n<li>J\u0117gos matavimas<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">4. Duomen\u0173 registravimas ir analiz\u0117<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>U\u017efiksuoti <strong>did\u017eiausia j\u0117ga arba nuo laiko priklausanti j\u0117ga<\/strong><\/li>\n\n\n\n<li>Sklypas <strong>kar\u0161to lipnumo priklausomyb\u0117s nuo temperat\u016bros kreiv\u0117<\/strong><\/li>\n\n\n\n<li>\u012evertinkite <strong>gedimo b\u016bdai<\/strong>, \u012fskaitant:\n<ul class=\"wp-block-list\">\n<li>Klij\u0173 gedimas<\/li>\n\n\n\n<li>Kohezijos gedimas<\/li>\n\n\n\n<li>Delaminavimas<\/li>\n\n\n\n<li>Med\u017eiagos l\u016b\u017eis<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">5. Pakartokite ir patvirtinkite<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Atlikti bent <strong>trys pakartojimai<\/strong><\/li>\n\n\n\n<li>Apskai\u010diuokite vidurk\u012f ir standartin\u012f nuokryp\u012f<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Kar\u0161to dygsnio testeris: \u012eranga ir atrankos kriterijai<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Patikimas <strong>kar\u0161to lipnumo testeris<\/strong> yra b\u016btinas norint atlikti tikslius ASTM F1921 bandymus. Pa\u017eangiosios sistemos u\u017etikrina:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Tikslus temperat\u016bros valdymas (PID sistema)<\/strong><\/li>\n\n\n\n<li><strong>Programuojamas buvimo laikas ir sl\u0117gis<\/strong><\/li>\n\n\n\n<li><strong>Automatizuoti bandym\u0173 ciklai<\/strong><\/li>\n\n\n\n<li><strong>Didel\u0117s skiriamosios gebos j\u0117gos matavimas<\/strong><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Rekomenduojamas sprendimas: Cell Instruments kar\u0161to sukibimo testeris<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/www.packqc.com\/lt\/\" target=\"_blank\" rel=\"noreferrer noopener\">L\u0105steli\u0173 instrumentai<\/a> si\u016blo specializuotus sprendimus, skirtus ASTM F1921 standarto atitik\u010diai u\u017etikrinti:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><a href=\"https:\/\/www.packqc.com\/lt\/products\/sale-astm-f1921-hot-tack-tester-plastic-film\/\" target=\"_blank\" rel=\"noreferrer noopener\">Hot Tack testeris HTT-02<\/a><\/strong> <strong>Privalumai:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Palaiko <strong>A ir B metodai<\/strong><\/li>\n\n\n\n<li>Didel\u0117s spartos bandymai iki <strong>12000 mm\/min<\/strong><\/li>\n\n\n\n<li>Tiksli temperat\u016bros kontrol\u0117 (\u00b10,2 \u00b0C)<\/li>\n\n\n\n<li>PLC paremtas automatizavimas, u\u017etikrinantis pakartojamum\u0105<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><a href=\"https:\/\/www.packqc.com\/lt\/products\/htt-01-hot-tack-tester\/\" target=\"_blank\" rel=\"noreferrer noopener\">Hot Tack testeris HTT-01<\/a><\/strong> <strong>Svarbiausi \u012fvykiai:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Daugiafunkcinis: kar\u0161tas priklijavimas, \u0161iluminis sandarinimas, pl\u0117\u0161ymas, tempimas<\/li>\n\n\n\n<li>Lankstus grei\u010dio diapazonas MTTP reikm\u0117ms<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>In\u017einerin\u0117 perspektyva:<\/strong><br>Tinkamo testerio pasirinkimas priklauso nuo to, ar j\u016bs\u0173 prioritetas yra <strong>proces\u0173 modeliavimas (HTT-02)<\/strong> arba <strong>keli\u0173 bandym\u0173 universalumas (HTT-01)<\/strong>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Pagrindiniai veiksniai, turintys \u012ftakos ASTM F1921 rezultatams<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Kintam\u0173j\u0173 supratimas pagerina testo patikimum\u0105 ir duomen\u0173 interpretavim\u0105:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Sandarinimo temperat\u016bra:<\/strong> Nustato sandarinimo prad\u017ei\u0105 ir stiprum\u0105<\/li>\n\n\n\n<li><strong>Atv\u0117simo laikas:<\/strong> Kritin\u0117 A metodo analiz\u0117s dalis<\/li>\n\n\n\n<li><strong>Med\u017eiagos strukt\u016bra:<\/strong> Daugiasluoksn\u0117s pl\u0117vel\u0117s elgiasi skirtingai<\/li>\n\n\n\n<li><strong>Gedimo b\u016bdas:<\/strong> Nurodo suri\u0161imo mechanizmo problemas<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u012e\u017evalga:<\/strong><br>I\u0161samus <strong>kar\u0161to klijavimo kreiv\u0117<\/strong> suteikia daugiau \u012f\u017evalg\u0173 nei vieno ta\u0161ko matavimas.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">DUK<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>1. Kuo skiriasi kar\u0161to lipnumo ir sandarumo stiprumas?<\/strong><br>Kar\u0161tuoju prilipimu matuojamas sandarinimo stiprumas i\u0161 karto po sandarinimo, o sandarinimo stiprumas - atv\u0117sus iki aplinkos temperat\u016bros.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>2. Kod\u0117l ASTM F1921 yra labai svarbus FFS pakuot\u0117ms?<\/strong><br>Kadangi prie\u0161 au\u0161inim\u0105 sandarikliai patiria \u012ftempim\u0105, o d\u0117l silpno kar\u0161to sukibimo gali sutrikti gamyba.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>3. Kur\u012f metod\u0105 tur\u0117\u010diau pasirinkti - A ar B?<\/strong><br>I\u0161samiai analizei atlikti naudokite A metod\u0105, o greitai kokyb\u0117s kontrolei - B metod\u0105.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>4. Kokia yra tipin\u0117 kar\u0161to klijavimo kreiv\u0117?<\/strong><br>Jis rodo sandarumo stiprumo priklausomyb\u0119 nuo temperat\u016bros ar laiko, tod\u0117l padeda nustatyti optimalias sandarinimo s\u0105lygas.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>5. Ar daugiasluoksn\u0117s pl\u0117vel\u0117s gali b\u016bti bandomos naudojant <a href=\"https:\/\/store.astm.org\/f1921_f1921m-12r23.html\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">ASTM F1921<\/a>?<\/strong><br>Taip, \u0161is metodas taikomas tiek viensluoksn\u0117ms, tiek daugiasluoksn\u0117ms termoplastin\u0117ms konstrukcijoms.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>","protected":false},"excerpt":{"rendered":"<p>ASTM F1921 apibr\u0117\u017eia standartizuotus termoplastini\u0173 med\u017eiag\u0173 kar\u0161to sukibimo stiprumo matavimo i\u0161 karto po sandarinimo metodus. Jame pateikiami du metodai - A metodas, skirtas nuo laiko priklausomai analizei, ir B metodas, skirtas did\u017eiausios j\u0117gos matavimui, leid\u017eiantis tiksliai \u012fvertinti sandarinimo savybes kritiniu au\u0161inimo etapu.<\/p>","protected":false},"featured_media":10318,"parent":0,"template":"","meta":{"_acf_changed":true,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","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":"disabled","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}}},"standard-category":[611],"class_list":["post-10317","standard","type-standard","status-publish","has-post-thumbnail","hentry","standard-category-astm"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.packqc.com\/lt\/wp-json\/wp\/v2\/standard\/10317","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.packqc.com\/lt\/wp-json\/wp\/v2\/standard"}],"about":[{"href":"https:\/\/www.packqc.com\/lt\/wp-json\/wp\/v2\/types\/standard"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.packqc.com\/lt\/wp-json\/wp\/v2\/media\/10318"}],"wp:attachment":[{"href":"https:\/\/www.packqc.com\/lt\/wp-json\/wp\/v2\/media?parent=10317"}],"wp:term":[{"taxonomy":"standard-category","embeddable":true,"href":"https:\/\/www.packqc.com\/lt\/wp-json\/wp\/v2\/standard-category?post=10317"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}