{"id":8173,"date":"2025-11-26T09:36:57","date_gmt":"2025-11-26T01:36:57","guid":{"rendered":"https:\/\/www.packqc.com\/?p=8173"},"modified":"2025-11-26T09:38:11","modified_gmt":"2025-11-26T01:38:11","slug":"dart-impact-test-guide-for-plastics-with-astm-d1709-methods","status":"publish","type":"post","link":"https:\/\/www.packqc.com\/lt\/dart-impact-test-guide-for-plastics-with-astm-d1709-methods\/","title":{"rendered":"Plastikini\u0173 pl\u0117veli\u0173 ir pakavimo med\u017eiag\u0173 sm\u016bginis bandymas str\u0117l\u0117mis"},"content":{"rendered":"
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Plastik\u0173 sm\u016bgini\u0173 bandym\u0173 vadovas su ASTM D1709 metodais<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Plastikini\u0173 pl\u0117veli\u0173 ir pakavimo med\u017eiag\u0173 sm\u016bginis bandymas str\u0117l\u0117mis<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Plastikini\u0173 pl\u0117veli\u0173 gamintojai, perdirb\u0117jai ir kokyb\u0117s tikrinimo laboratorijos naudoja sm\u016bgio str\u0117lyte bandymas<\/strong> \u012fvertinti, kaip pakavimo med\u017eiagos atsparios krintan\u010dio sviedinio sm\u016bgiui. Kadangi lanks\u010diosios pakuot\u0117s nuolat tobul\u0117ja, \u0161\u012f bandym\u0105 b\u016btina i\u0161manyti, kad b\u016bt\u0173 u\u017etikrintas pl\u0117vel\u0117s patvarumas, i\u0161vengta transportavimo pa\u017eeidim\u0173 ir patenkinti pasauliniai reguliavimo l\u016bkes\u010diai.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Sm\u016bgio str\u0117lyte testo supratimas ir jo svarba<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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The sm\u016bgio str\u0117lyte bandymas<\/strong> matuojama energija, kurios reikia, kad plastikin\u0117 pl\u0117vel\u0117 sugest\u0173, kai \u012f j\u0105 i\u0161 fiksuoto auk\u0161\u010dio pataiko pusrutulio formos str\u0117l\u0117. \u0160is vertinimo metodas padeda prognozuoti realias eksploatacines savybes, \u012fskaitant kritimo gedimus transportavimo metu, pakuot\u0117s vientisum\u0105 j\u0105 tvarkant ir bendr\u0105 plon\u0173 pl\u0117veli\u0173 med\u017eiag\u0173 atsparum\u0105.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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ASTM D1709 ir ISO 7765 standartuose apibr\u0117\u017etos standartin\u0117s proced\u016bros, nurodant str\u0117li\u0173 dyd\u017eius, kritimo auk\u0161\u010dius, kondicionavimo reikalavimus ir skai\u010diavimo metodus, skirtus 50% gedimo energijai nustatyti (taip pat \u017einom\u0105 kaip sm\u016bgio gedimo svoris<\/strong>). Kadangi \u0161is bandymas atspindi bendr\u0105 pl\u0117vel\u0117s sud\u0117ties, ekstruzijos kokyb\u0117s ir storio vienodumo ind\u0117l\u012f, jis pla\u010diai naudojamas pl\u0117vel\u0117s gamyboje, maisto pakuo\u010di\u0173, vaist\u0173 lizdini\u0173 plok\u0161teli\u0173 gamyboje ir daugelyje lanks\u010di\u0173 pakuo\u010di\u0173.<\/p>

Gamintojai da\u017enai remiasi \u0161iuo bandymu rengdami specifikacijas, atrinkdami naujas med\u017eiagas ir atlikdami \u012fprast\u0105 kokyb\u0117s kontrol\u0119. Kai kartu su labai tiksliu prietaisu, pvz. Cell Instruments krintan\u010di\u0173 str\u0117li\u0173 sm\u016bgio testeris<\/em>, jis tampa nepakei\u010diama priemone, padedan\u010dia suma\u017einti med\u017eiag\u0173 gedim\u0173 rizik\u0105 ir u\u017etikrinti pastov\u0173 mechanin\u012f veikim\u0105.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Kaip veikia sm\u016bgio str\u0117lyte testas<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Sm\u016bgio str\u0117lyte bandyme naudojama laisvai krintanti pusrutulio formos str\u0117l\u0117, kuri vertikaliai krinta ant u\u017espausto pl\u0117vel\u0117s bandinio. Pl\u0117vel\u0117 arba sugenda, arba atlaiko sm\u016bg\u012f. Reguliuodami str\u0117l\u0117s svorio \u017eingsnius ir skai\u010diuodami nes\u0117kmes, operatoriai nustato svor\u012f, kuris sukelia 50% gedim\u0173 da\u017enis<\/strong>, kuris parodo med\u017eiagos atsparum\u0105 sm\u016bgiams.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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A bandymo metodas ir B bandymo metodas<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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ASTM D1709 apima du bandym\u0173 metodus:<\/p>

  • A metodas naudoja 38,10 mm<\/strong> str\u0117l\u0117s galvut\u0117, nukritusi i\u0161 0.66 m<\/strong>, idealiai tinka filmams, kuriems reikia nuo nuo 50 g iki 6 kg<\/strong>.<\/li>
  • B metodas naudoja 50,80 mm<\/strong> str\u0117l\u0117s galvut\u0117, nukritusi i\u0161 1.52 m<\/strong>tinka filmams, kuriems reikia nuo 0,3 kg iki 6 kg<\/strong>.<\/li><\/ul>

    \u0160i\u0173 dviej\u0173 metod\u0173 rezultatai negalima tiesiogiai palyginti<\/strong> nes skiriasi str\u0117l\u0117s dydis, kritimo auk\u0161tis ir sm\u016bgio energija.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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    Laipt\u0173 metodas<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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    Taikant laipt\u0173 metod\u0105 po kiekvieno bandymo str\u0117l\u0117s svoris koreguojamas atsi\u017evelgiant \u012f ankstesnio bandinio rezultatus. \u0160is metodas pla\u010diai taikomas, nes juo u\u017etikrinamas patikimas statistinis reik\u0161mingumas naudojant ma\u017eiau im\u010di\u0173.<\/p>

    Alternatyvus grupavimo metodas<\/h3>

    \u0160iuo atveju bandomos de\u0161imties bandini\u0173 grup\u0117s su vienu svoriu, o tarp grupi\u0173 svoris kei\u010diamas. \u0160is metodas tampa naudingas, kai i\u0161samiai analizei reikalingas platus gedim\u0173 pasiskirstymas.<\/p>

    Kritimo sm\u016bgio testerio vaidmuo atliekant tiksl\u0173 pl\u0117vel\u0117s vertinim\u0105<\/h2>

    Patikimas kritimo sm\u016bgio testeris<\/strong> yra b\u016btinas sm\u016bgio str\u0117lyte bandymui atlikti pagal ASTM D1709 ir ISO 7765. Kritimo auk\u0161\u010dio, str\u0117l\u0117s geometrijos, prispaudimo sl\u0117gio ir bandinio i\u0161lyginimo tikslumas turi tiesiogin\u0117s \u012ftakos bandymo tikslumui.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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    Kod\u0117l svarbus didelio na\u0161umo kritimo sm\u016bgio testeris<\/h3>
    • U\u017etikrina pakartojamas<\/strong> poveikio vieta<\/li>
    • Saugo nuo slydimo d\u0117l stabilaus u\u017espaudimo<\/li>
    • I\u0161laikomos tikslios kritimo auk\u0161\u010dio tolerancijos<\/li>
    • Leid\u017eia tiksliai didinti str\u0117li\u0173 svor\u012f<\/li>
    • Suma\u017eina operatoriaus kintamum\u0105<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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      \n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"Plastik\u0173\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>\n\t\t
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      Laboratorijoms ar gamintojams, siekiantiems patikimos kokyb\u0117s kontrol\u0117s, labai svarbu naudoti profesionalaus lygio sm\u016bgio tester\u012f. . Cell Instruments krintan\u010di\u0173 str\u0117li\u0173 sm\u016bgio testeris<\/strong> automatizuota auk\u0161\u010dio kontrol\u0117, precizi\u0161kas prispaudimas ir patikimos str\u0117li\u0173 i\u0161leidimo sistemos, leid\u017eian\u010dios naudotojams pasiekti stabilius ir pakartojamus rezultatus, visi\u0161kai atitinkan\u010dius ASTM ir ISO reikalavimus. Jis ypa\u010d vertingas gamybos \u012fmon\u0117ms, kurioms reikia nuosekli\u0173 ataskait\u0173 ir atsekam\u0173 bandym\u0173 duomen\u0173.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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      Veiksniai, darantys \u012ftak\u0105 str\u0117li\u0173 sm\u016bgio bandymo rezultatams<\/h2>

      Keletas med\u017eiag\u0173 ir bandym\u0173 kintam\u0173j\u0173 turi \u012ftakos sm\u016bginio sm\u016bgio charakteristikoms:<\/p>

      • Pl\u0117vel\u0117s storis:<\/strong> Atsparumas sm\u016bgiams did\u0117ja, bet nesikei\u010dia tiesi\u0161kai.<\/li>
      • Ekstruzijos vienodumas:<\/strong> Matuokli\u0173 nuokrypiai, \u0161tamp\u0173 linijos ir ter\u0161alai daro didel\u0119 \u012ftak\u0105 rezultatams.<\/li>
      • Med\u017eiagos tipas:<\/strong> Polietilenas, nailonas, EVOH kompozitai, BOPP ir daugiasluoksn\u0117s pl\u0117vel\u0117s elgiasi skirtingai.<\/li>

      • Kondicionavimas:<\/strong> Filmai turi b\u016bti kondicionuojami 23\u00b0C<\/strong> ir 50% RH<\/strong> prie\u0161 bandym\u0105.<\/p><\/li><\/ul>

        Norint gauti tikslius duomenis, reikia laikytis kondicionavimo proced\u016br\u0173, tinkamai tikrinti str\u0117les ir periodi\u0161kai tikrinti u\u017espaudim\u0105, kad b\u016bt\u0173 i\u0161vengta bandini\u0173 pasislinkimo.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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        Sm\u016bginio sm\u016bginio bandymo taikymas pakuo\u010di\u0173 ir med\u017eiag\u0173 pramon\u0117je<\/h2>

        Sm\u016bgio str\u0117lyte bandymas yra labai svarbus:<\/p>

        • Maisto produkt\u0173 pakavimo pl\u0117vel\u0117s, tokios kaip PE, LLDPE ir daugiasluoksniai mai\u0161eliai<\/li>
        • Farmacijos pakuo\u010di\u0173 pl\u0117vel\u0117s ir medicinos prietais\u0173 mai\u0161eliai<\/li>
        • \u017dem\u0117s \u016bkio pl\u0117vel\u0117s, \u012fd\u0117klai ir pramoniniai rulonai<\/li>
        • Lankst\u016bs laminatai, kuriems reikia tikslaus kietumo \u012fvertinimo<\/li>
        • Nauj\u0173 pl\u0117vel\u0117s sud\u0117\u010di\u0173 tyrim\u0173 ir pl\u0117tros bandymai<\/li>
        • Konverteri\u0173 ir perdirb\u0117j\u0173 \u012fve\u017eam\u0173 med\u017eiag\u0173 tikrinimas<\/li><\/ul>

          Suprasdami atsparum\u0105 sm\u016bgiams, gamintojai gali kurti pl\u0117veles, kurios yra atsparesn\u0117s kritimui, ma\u017eina med\u017eiag\u0173 naudojim\u0105 ir optimizuoja mechanin\u0119 pusiausvyr\u0105.<\/p>

          Cell Instruments krintan\u010di\u0173 str\u0117li\u0173 sm\u016bgio testerio naudojimo privalumai<\/h2>

          The Cell Instruments krintan\u010di\u0173 str\u0117li\u0173 sm\u016bgio testeris<\/strong> palaiko:<\/p>

          • Automatinis la\u0161o auk\u0161\u010dio nustatymas<\/li>
          • Didelio stiprumo bandini\u0173 u\u017espaudimas, apsaugantis nuo slydimo<\/li>
          • Tiksliai apdirbtos str\u0117li\u0173 galvut\u0117s su kontroliuojamomis tolerancijomis<\/li>
          • \u012emontuoti saugos mechanizmai operatoriaus apsaugai<\/li>

          • Statistin\u0117s ataskaitos, suderintos su ASTM D1709 ir ISO 7765 standartais<\/p><\/li><\/ul>

            D\u0117l tvirtos konstrukcijos ir pa\u017eangi\u0173 valdymo element\u0173 jis idealiai tinka laboratorijoms, siekian\u010dioms tikslumo ir pakartojamumo.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\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":"

            Dart Impact Test Guide for Plastics with ASTM D1709 Methods Dart Impact Test for Plastic Films and Packaging Materials Plastic film manufacturers, converters, and quality inspection laboratories use the dart impact test to evaluate how well packaging materials resist impact from a falling projectile. As flexible packaging continues to evolve, understanding this test is essential […]<\/p>","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"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":"","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":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-8173","post","type-post","status-publish","format-standard","hentry","category-blog"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.packqc.com\/lt\/wp-json\/wp\/v2\/posts\/8173","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.packqc.com\/lt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.packqc.com\/lt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.packqc.com\/lt\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/www.packqc.com\/lt\/wp-json\/wp\/v2\/comments?post=8173"}],"version-history":[{"count":0,"href":"https:\/\/www.packqc.com\/lt\/wp-json\/wp\/v2\/posts\/8173\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.packqc.com\/lt\/wp-json\/wp\/v2\/media?parent=8173"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.packqc.com\/lt\/wp-json\/wp\/v2\/categories?post=8173"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.packqc.com\/lt\/wp-json\/wp\/v2\/tags?post=8173"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}