{"id":3288,"date":"2026-05-12T06:02:54","date_gmt":"2026-05-12T06:02:54","guid":{"rendered":"https:\/\/www.materialstests.com\/?post_type=application&#038;p=3288"},"modified":"2026-05-12T06:02:56","modified_gmt":"2026-05-12T06:02:56","slug":"astm-f1921","status":"publish","type":"application","link":"https:\/\/www.materialstests.com\/lv\/application\/astm-f1921.html","title":{"rendered":"ASTM F1921"},"content":{"rendered":"<h2 class=\"wp-block-heading\">Izpratne par ASTM F1921 un t\u0101 noz\u012bmi bl\u012bv\u0113juma integrit\u0101tes nodro\u0161in\u0101\u0161an\u0101<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>ASTM F1921<\/strong> nosaka standartiz\u0113tas proced\u016bras, lai nov\u0113rt\u0113tu <strong>karst\u0101s l\u012bm\u0113\u0161anas iztur\u012bba<\/strong> termoplastisko pl\u0113vju un lokanu audumu t\u016bl\u012bt p\u0113c karstumizl\u012bm\u0113\u0161anas. \u0160\u012b \u012bpa\u0161\u012bba ir \u013coti svar\u012bga, jo bl\u012bv\u0113jumi bie\u017ei saskaras ar meh\u0101nisku slodzi pirms atdzes\u0113\u0161anas \u0101trgaitas iepako\u0161anas oper\u0101ciju laik\u0101, piem\u0113ram, veidojot-aizpildot-aizl\u012bm\u0113jot (FFS).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">At\u0161\u0137ir\u012bb\u0101 no parastajiem bl\u012bv\u0113juma iztur\u012bbas testiem ASTM F1921 koncentr\u0113jas uz <strong>bl\u012bv\u0113juma veiktsp\u0113ja izkaus\u0113t\u0101 vai da\u013c\u0113ji izkaus\u0113t\u0101 st\u0101vokl\u012b.<\/strong>, sniedzot ieskatu re\u0101los ra\u017eo\u0161anas apst\u0101k\u013cos. In\u017eenieri un kvalit\u0101tes kontroles komandas pa\u013caujas uz ASTM F1921, lai sal\u012bdzin\u0101tu materi\u0101lus, optimiz\u0113tu bl\u012bv\u0113\u0161anas parametrus un nov\u0113rstu priek\u0161laic\u012bgu bl\u012bv\u0113juma boj\u0101jumu.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Kas ir karst\u0101s piestiprin\u0101\u0161anas iztur\u012bba?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Karst\u0101s sa\u0137eres iztur\u012bba<\/strong> m\u0113ra sp\u0113ku, kas nepiecie\u0161ams, lai atdal\u012btu karsto plombu, kam\u0113r t\u0101 v\u0113l ir karsta. \u0160is parametrs tie\u0161i ietekm\u0113 iepako\u0161anas efektivit\u0101ti un produkta dro\u0161\u012bbu.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">K\u0101p\u0113c izmantot karst\u0101 bl\u012bv\u0113juma iztur\u012bbas testeri?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A <strong>karst\u0101 bl\u012bv\u0113juma iztur\u012bbas testeris<\/strong> noteiktos apst\u0101k\u013cos veic kontrol\u0113tu bl\u012bv\u0113\u0161anu un t\u016bl\u012bt\u0113ju stiepes atdal\u012b\u0161anu. Tas nodro\u0161ina:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>R\u016bpniecisko bl\u012bv\u0113\u0161anas procesu prec\u012bza simul\u0101cija<\/li>\n\n\n\n<li>Atk\u0101rtojami un standartiz\u0113ti rezult\u0101ti<\/li>\n\n\n\n<li>Dro\u0161s materi\u0101lu sal\u012bdzin\u0101jums<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Karst\u0101s sa\u0137eres iztur\u012bbas tests plastmasas pl\u0113ves lietojumiem<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Port\u0101ls <strong>plastmasas pl\u0113ves karst\u0101s sa\u0137eres iztur\u012bbas tests<\/strong> tiek pla\u0161i izmantots:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Daudzsl\u0101\u0146u barjerpl\u0113ves<\/li>\n\n\n\n<li>Lamin\u0113tas iepakojuma strukt\u016bras<\/li>\n\n\n\n<li>Medic\u012bnas un farm\u0101cijas iepakojums<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Tas pal\u012bdz noteikt <strong>bl\u012bv\u0113juma uzs\u0101k\u0161anas temperat\u016bra (SIT)<\/strong> un optim\u0101lu bl\u012bv\u0113\u0161anas logu, kas ir b\u016btiski procesa optimiz\u0101cijai.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">ASTM F1921 defin\u0113t\u0101s karst\u0101s sa\u0137eres test\u0113\u0161anas metodes<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">ASTM F1921 ietver divas galven\u0101s test\u0113\u0161anas metodes, abas paredz\u0113tas bl\u012bv\u0113juma iztur\u012bbas m\u0113r\u012b\u0161anai uzreiz p\u0113c bl\u012bv\u0113\u0161anas:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">ASTM F1921 A metode (fiks\u0113ta kav\u0113\u0161an\u0101s)<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Karst\u0101s sa\u0137eres stipr\u012bbas m\u0113r\u012bjumi iepriek\u0161 noteiktos dzes\u0113\u0161anas laikos<\/li>\n\n\n\n<li>\u0123ener\u0113 <strong>dzes\u0113\u0161anas l\u012bkne<\/strong> bl\u012bv\u0113juma stipr\u012bbas atkar\u012bba no laika<\/li>\n\n\n\n<li>Piem\u0113rots detaliz\u0113tai materi\u0101lu raksturo\u0161anai<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">ASTM F1921 B metode (main\u012bga aizkave)<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Piem\u0113ro izv\u0113l\u0113to kav\u0113\u0161an\u0101s laiku pirms test\u0113\u0161anas<\/li>\n\n\n\n<li>Ieraksti <strong>maksim\u0101lais sp\u0113ks atdal\u012b\u0161anas laik\u0101<\/strong><\/li>\n\n\n\n<li>Ide\u0101li piem\u0113rots uz procesu orient\u0113tai test\u0113\u0161anai un \u0101trai sal\u012bdzin\u0101\u0161anai.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Abas metodes ietver:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Kontrol\u0113ta bl\u012bv\u0113\u0161anas temperat\u016bra, spiediens un notur\u012bbas laiks<\/li>\n\n\n\n<li>Automatiz\u0113ta aizz\u012bmogot\u0101 parauga atdal\u012b\u0161ana<\/li>\n\n\n\n<li>Atdal\u012b\u0161anas sp\u0113ka m\u0113r\u012b\u0161ana l\u012bdz boj\u0101jumam<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Karst\u0101s sa\u0137eres testa galvenie parametri<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Lai sasniegtu ticamus ASTM F1921 rezult\u0101tus, operatoriem r\u016bp\u012bgi j\u0101kontrol\u0113:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Bl\u012bv\u0113\u0161anas temperat\u016bra<\/strong><br>Parasti tiek test\u0113ts vis\u0101 diapazon\u0101, lai izveidotu karst\u0101s lip\u012bbas l\u012bkni. \u0160\u012b l\u012bkne s\u0101kas tuvu bl\u012bv\u0113juma uzs\u0101k\u0161anas temperat\u016brai un pak\u0101peniski palielin\u0101s.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Izmanto\u0161anas laiks<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u226425 \u00b5m pl\u0113ves: ~0,5 s<\/li>\n\n\n\n<li>25-64 \u00b5m pl\u0113ves: ~ 1,0 s<\/li>\n\n\n\n<li>64 \u00b5m pl\u0113ves: ~ 2,5 s<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Bl\u012bv\u0113\u0161anas spiediens<\/strong><br>Parasti tiek uztur\u0113ts starp <strong>15-30 N\/cm\u00b2<\/strong>, nodro\u0161inot pareizu saskarnes savieno\u0161anu.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Atdal\u012b\u0161anas \u0101trums<\/strong><br>Ietekm\u0113 izm\u0113r\u012bto sp\u0113ku, un, lai ieg\u016btu sal\u012bdzin\u0101mus rezult\u0101tus, tam j\u0101b\u016bt nemain\u012bgam.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">ASTM F1921 testos nov\u0113rotie boj\u0101jumu veidi<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Rezult\u0101tu interpret\u0101cijai ir svar\u012bgi re\u0123istr\u0113t k\u013c\u016bdu veidus. Bie\u017e\u0101k sastopamie re\u017e\u012bmi ir \u0161\u0101di:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>L\u012bmes boj\u0101jums bl\u012bv\u0113juma saskarn\u0113<\/li>\n\n\n\n<li>Kohez\u012bvais boj\u0101jums materi\u0101l\u0101<\/li>\n\n\n\n<li>Sl\u0101\u0146u atdal\u012b\u0161an\u0101s<\/li>\n\n\n\n<li>Materi\u0101la p\u0101rr\u0101vums vai pagarin\u0101jums<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0160ie nov\u0113rojumi pal\u012bdz noteikt, vai neveiksmes c\u0113lonis ir <strong>nepiln\u012bbas z\u012bmogos vai materi\u0101l\u0101s strukt\u016bras jaut\u0101jumi<\/strong>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Pareiz\u0101 karst\u0101 bl\u012bv\u0113juma iztur\u012bbas testera izv\u0113le<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Uzticams <strong>karst\u0101 bl\u012bv\u0113juma iztur\u012bbas testeris<\/strong> j\u0101atbilst ASTM F1921 pras\u012bb\u0101m un j\u0101nodro\u0161ina stabili, atk\u0101rtojami rezult\u0101ti.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Cell Instruments pied\u0101v\u0101 progres\u012bvus risin\u0101jumus, piem\u0113ram. <strong><a href=\"https:\/\/www.materialstests.com\/lv\/hot-tack-tester.html\/\" target=\"_blank\" rel=\"noreferrer noopener\">Karst\u0101s takel\u0101\u017eas testeris<\/a> (HTT s\u0113rija)<\/strong>, kas izstr\u0101d\u0101ts, lai nodro\u0161in\u0101tu precizit\u0101ti un elast\u012bbu:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>PLC kontrol\u0113ta sist\u0113ma<\/strong> nodro\u0161ina konsekventu automatiz\u0101ciju.<\/li>\n\n\n\n<li><strong>Augstas precizit\u0101tes temperat\u016bras kontrole (\u00b10,2\u00b0C)<\/strong> garant\u0113 atk\u0101rtojam\u012bbu<\/li>\n\n\n\n<li>Atbalsta gan <strong>A metode un B metode<\/strong> test\u0113\u0161ana<\/li>\n\n\n\n<li>Pla\u0161s \u0101truma diapazons, kas piem\u0113rots da\u017e\u0101diem materi\u0101liem<\/li>\n\n\n\n<li>Integr\u0113tas dro\u0161\u012bbas un kalibr\u0113\u0161anas funkcijas<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0160\u012bs iesp\u0113jas \u013cauj laboratorij\u0101m un ra\u017eot\u0101jiem veikt <strong>visaptvero\u0161s plastmasas pl\u0113ves karst\u0101s sa\u0137eres iztur\u012bbas tests<\/strong> ar p\u0101rliec\u012bbu.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Bie\u017e\u0101k uzdotie jaut\u0101jumi<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>1. K\u0101da ir at\u0161\u0137ir\u012bba starp karst\u0101s sa\u0137eres stipr\u012bbu un herm\u0113tiskuma stipr\u012bbu?<\/strong><br>Karst\u0101 sa\u0137eres iztur\u012bba m\u0113ra bl\u012bv\u0113juma integrit\u0101ti uzreiz p\u0113c bl\u012bv\u0113\u0161anas, bet bl\u012bv\u0113juma iztur\u012bba nov\u0113rt\u0113 piln\u012bb\u0101 atdzes\u0113tus bl\u012bv\u0113jumus.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>2. K\u0101p\u0113c ASTM F1921 ir svar\u012bgs iepakojumam?<\/strong><br>T\u0101 imit\u0113 re\u0101lus iepakojuma apst\u0101k\u013cus, kuros bl\u012bv\u0113jumi pirms atdzes\u0113\u0161anas tiek pak\u013cauti stresam, t\u0101d\u0113j\u0101di pal\u012bdzot nov\u0113rst k\u013c\u016bmes.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>3. Kuras nozares balst\u0101s uz <a href=\"https:\/\/store.astm.org\/f1921_f1921m-12r23.html\" target=\"_blank\" rel=\"noreferrer noopener\">ASTM F1921<\/a> test\u0113\u0161ana?<\/strong><br>\u0160o standartu pla\u0161i izmanto p\u0101rtikas, farm\u0101cijas, medic\u012bnas ier\u012b\u010du un elast\u012bg\u0101 iepakojuma nozar\u0113s.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>4. K\u0101 izv\u0113l\u0113ties A metodi vai B metodi?<\/strong><br>Izmantojiet A metodi detaliz\u0113tai anal\u012bzei un dzes\u0113\u0161anas l\u012bkn\u0113m; izv\u0113lieties B metodi \u0101tr\u0101kai, uz procesu orient\u0113tai test\u0113\u0161anai.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>5. K\u0101di faktori visvair\u0101k ietekm\u0113 karst\u0101s l\u012bm\u0113\u0161anas stipr\u012bbu?<\/strong><br>Rezult\u0101tus b\u016btiski ietekm\u0113 bl\u012bv\u0113\u0161anas temperat\u016bra, notur\u0113\u0161anas laiks, spiediens un materi\u0101la sast\u0101vs.<\/p>","protected":false},"excerpt":{"rendered":"<p>ASTM F1921 defines standardized methods to measure hot tack strength of thermoplastic films immediately after sealing. It evaluates seal integrity under real production conditions, focusing on parameters such as temperature, pressure, and dwell time.<\/p>","protected":false},"featured_media":3291,"parent":0,"template":"","meta":{"_acf_changed":false},"standard":[],"class_list":["post-3288","application","type-application","status-publish","has-post-thumbnail","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.materialstests.com\/lv\/wp-json\/wp\/v2\/application\/3288","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.materialstests.com\/lv\/wp-json\/wp\/v2\/application"}],"about":[{"href":"https:\/\/www.materialstests.com\/lv\/wp-json\/wp\/v2\/types\/application"}],"version-history":[{"count":3,"href":"https:\/\/www.materialstests.com\/lv\/wp-json\/wp\/v2\/application\/3288\/revisions"}],"predecessor-version":[{"id":3292,"href":"https:\/\/www.materialstests.com\/lv\/wp-json\/wp\/v2\/application\/3288\/revisions\/3292"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.materialstests.com\/lv\/wp-json\/wp\/v2\/media\/3291"}],"wp:attachment":[{"href":"https:\/\/www.materialstests.com\/lv\/wp-json\/wp\/v2\/media?parent=3288"}],"wp:term":[{"taxonomy":"standard","embeddable":true,"href":"https:\/\/www.materialstests.com\/lv\/wp-json\/wp\/v2\/standard?post=3288"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}