{"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\/sk\/dart-impact-test-guide-for-plastics-with-astm-d1709-methods\/","title":{"rendered":"R\u00e1zov\u00e1 sk\u00fa\u0161ka plastov\u00fdch f\u00f3li\u00ed a obalov\u00fdch materi\u00e1lov \u0161\u00edpkou"},"content":{"rendered":"
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Pr\u00edru\u010dka pre n\u00e1razov\u00e9 sk\u00fa\u0161ky plastov s met\u00f3dami ASTM D1709<\/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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R\u00e1zov\u00e1 sk\u00fa\u0161ka plastov\u00fdch f\u00f3li\u00ed a obalov\u00fdch materi\u00e1lov \u0161\u00edpkou<\/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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V\u00fdrobcovia plastov\u00fdch f\u00f3li\u00ed, spracovatelia a laborat\u00f3ri\u00e1 na kontrolu kvality pou\u017e\u00edvaj\u00fa n\u00e1razov\u00e1 sk\u00fa\u0161ka \u0161\u00edpkou<\/strong> vyhodnoti\u0165, ako dobre obalov\u00e9 materi\u00e1ly odol\u00e1vaj\u00fa n\u00e1razu padaj\u00faceho projektilu. Ke\u010f\u017ee sa flexibiln\u00e9 obaly neust\u00e1le vyv\u00edjaj\u00fa, pochopenie tohto testu je nevyhnutn\u00e9 na zabezpe\u010denie odolnosti f\u00f3lie, zabr\u00e1nenie po\u0161kodeniu pri preprave a splnenie glob\u00e1lnych regula\u010dn\u00fdch o\u010dak\u00e1van\u00ed.<\/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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Pochopenie testu n\u00e1razu \u0161\u00edpky a jeho v\u00fdznamu<\/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 n\u00e1razov\u00e1 sk\u00fa\u0161ka \u0161\u00edpkou<\/strong> meria energiu potrebn\u00fa na sp\u00f4sobenie poruchy plastovej f\u00f3lie, ke\u010f do nej z pevnej v\u00fd\u0161ky naraz\u00ed polgu\u013eov\u00e1 strela. T\u00e1to met\u00f3da hodnotenia pom\u00e1ha predpoveda\u0165 re\u00e1lne vlastnosti vr\u00e1tane zlyhania pri p\u00e1de po\u010das prepravy, celistvosti obalu pri manipul\u00e1cii a celkovej h\u00fa\u017eevnatosti tenkovrstvov\u00fdch materi\u00e1lov.<\/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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Normy ASTM D1709 a ISO 7765 definuj\u00fa \u0161tandardn\u00e9 postupy, ktor\u00e9 \u0161pecifikuj\u00fa ve\u013ekosti \u0161\u00edpok, v\u00fd\u0161ky p\u00e1du, po\u017eiadavky na kondicionovanie a met\u00f3dy v\u00fdpo\u010dtu na ur\u010denie energie zlyhania 50% (zn\u00e1mej aj ako hmotnos\u0165 pri zlyhan\u00ed n\u00e1razu<\/strong>). Ke\u010f\u017ee tento test odr\u00e1\u017ea kombinovan\u00fd pr\u00edspevok zlo\u017eenia f\u00f3lie, kvality vytl\u00e1\u010dania a rovnomernosti hr\u00fabky, je \u0161iroko pou\u017e\u00edvan\u00fd pri v\u00fdrobe f\u00f3li\u00ed, balen\u00ed potrav\u00edn, farmaceutick\u00fdch blistrov a mnoh\u00fdch aplik\u00e1ci\u00e1ch flexibiln\u00fdch obalov.<\/p>

V\u00fdrobcovia sa \u010dasto spoliehaj\u00fa na tento test pri vytv\u00e1ran\u00ed \u0161pecifik\u00e1ci\u00ed, kvalifik\u00e1cii nov\u00fdch materi\u00e1lov a be\u017enej kontrole kvality. V spojen\u00ed s vysoko presn\u00fdm pr\u00edstrojom, ako je napr. Cell Instruments Tester n\u00e1razov padaj\u00facich \u0161\u00edpok<\/em>, sa st\u00e1va nepostr\u00e1date\u013en\u00fdm n\u00e1strojom na minimaliz\u00e1ciu riz\u00edk zlyhania materi\u00e1lu a zabezpe\u010denie konzistentnej mechanickej v\u00fdkonnosti.<\/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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Ako funguje n\u00e1razov\u00fd test \u0161\u00edpkami<\/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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Pri sk\u00fa\u0161ke n\u00e1razom \u0161\u00edpky sa pou\u017e\u00edva vo\u013ene padaj\u00faca polgu\u013eov\u00e1 \u0161\u00edpka, ktor\u00e1 pad\u00e1 vertik\u00e1lne na upnut\u00fa vzorku f\u00f3lie. F\u00f3lia bu\u010f zlyh\u00e1, alebo vydr\u017e\u00ed n\u00e1raz. Regulovan\u00edm pr\u00edrastkov hmotnosti \u0161\u00edpky a po\u010d\u00edtan\u00edm zlyhan\u00ed oper\u00e1tori ur\u010dia hmotnos\u0165, ktor\u00e1 sp\u00f4sob\u00ed 50% miera zlyhania<\/strong>, ktor\u00fd predstavuje odolnos\u0165 materi\u00e1lu proti n\u00e1razu.<\/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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Sk\u00fa\u0161obn\u00e1 met\u00f3da A a sk\u00fa\u0161obn\u00e1 met\u00f3da B<\/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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Norma ASTM D1709 obsahuje dve sk\u00fa\u0161obn\u00e9 met\u00f3dy:<\/p>

  • Met\u00f3da A pou\u017e\u00edva 38,10 mm<\/strong> hlava \u0161\u00edpky, spadnut\u00e1 z 0.66 m<\/strong>, ide\u00e1lne pre filmy, ktor\u00e9 si vy\u017eaduj\u00fa hmotnos\u0165 od 50 g a\u017e 6 kg<\/strong>.<\/li>
  • Met\u00f3da B pou\u017e\u00edva 50,80 mm<\/strong> hlava \u0161\u00edpky, spadnut\u00e1 z 1.52 m<\/strong>, vhodn\u00e9 pre filmy, ktor\u00e9 si vy\u017eaduj\u00fa 0,3 kg a\u017e 6 kg<\/strong>.<\/li><\/ul>

    Tieto dve met\u00f3dy poskytuj\u00fa v\u00fdsledky, ktor\u00e9 nemo\u017eno priamo porovn\u00e1va\u0165<\/strong> preto\u017ee ve\u013ekos\u0165 \u0161\u00edpky, v\u00fd\u0161ka p\u00e1du a energia n\u00e1razu sa l\u00ed\u0161ia.<\/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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    Met\u00f3da schodiska<\/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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    Schodiskov\u00e1 met\u00f3da upravuje hmotnos\u0165 \u0161\u00edpky po ka\u017edom teste na z\u00e1klade v\u00fdsledku predch\u00e1dzaj\u00facej vzorky. T\u00e1to met\u00f3da je \u0161iroko pou\u017e\u00edvan\u00e1, preto\u017ee poskytuje spo\u013eahliv\u00fa \u0161tatistick\u00fa v\u00fdznamnos\u0165 pri men\u0161om po\u010dte vzoriek.<\/p>

    Alternat\u00edvna met\u00f3da zoskupovania<\/h3>

    Tu sa testuj\u00fa skupiny desiatich vzoriek pri jednej hmotnosti a hmotnos\u0165 sa medzi skupinami men\u00ed. T\u00e1to met\u00f3da sa st\u00e1va u\u017eito\u010dnou, ke\u010f je na podrobn\u00fa anal\u00fdzu potrebn\u00e9 \u0161irok\u00e9 rozlo\u017eenie por\u00fach.<\/p>

    \u00daloha testera n\u00e1razu pri p\u00e1de pri presnom hodnoten\u00ed filmu<\/h2>

    Spo\u013eahliv\u00fd tester n\u00e1razu pri p\u00e1de<\/strong> je nevyhnutn\u00fd na vykonanie sk\u00fa\u0161ky n\u00e1razom \u0161\u00edpky pod\u013ea noriem ASTM D1709 a ISO 7765. Presnos\u0165 v\u00fd\u0161ky p\u00e1du, geometrie \u0161\u00edpky, up\u00ednacieho tlaku a vyrovnania vzorky priamo ovplyv\u0148uje presnos\u0165 sk\u00fa\u0161ky.<\/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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    Pre\u010do je d\u00f4le\u017eit\u00fd vysoko v\u00fdkonn\u00fd tester n\u00e1razu pri p\u00e1de<\/h3>
    • Zabezpe\u010duje opakovate\u013en\u00e9<\/strong> miesto dopadu<\/li>
    • Zabra\u0148uje sk\u013aznutiu v\u010faka stabiln\u00e9mu upnutiu<\/li>
    • Zachov\u00e1va presn\u00e9 tolerancie v\u00fd\u0161ky p\u00e1du<\/li>
    • Umo\u017e\u0148uje presn\u00fd pr\u00edrastok hmotnosti \u0161\u00edpky<\/li>
    • Zni\u017euje variabilitu oper\u00e1tora<\/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\"Pr\u00edru\u010dka\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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      Pre laborat\u00f3ri\u00e1 alebo v\u00fdrobcov, ktor\u00ed sa sna\u017eia o spo\u013eahliv\u00fa kontrolu kvality, je pou\u017eitie profesion\u00e1lneho r\u00e1zov\u00e9ho testera k\u013e\u00fa\u010dov\u00e9. Str\u00e1nka Cell Instruments Tester n\u00e1razov padaj\u00facich \u0161\u00edpok<\/strong> poskytuje automatick\u00e9 riadenie v\u00fd\u0161ky, presn\u00e9 up\u00ednanie a spo\u013eahliv\u00e9 syst\u00e9my uvo\u013e\u0148ovania \u0161\u00edpok, ktor\u00e9 umo\u017e\u0148uj\u00fa pou\u017e\u00edvate\u013eom dosahova\u0165 stabiln\u00e9 a opakovate\u013en\u00e9 v\u00fdsledky a z\u00e1rove\u0148 plne vyhovuj\u00fa po\u017eiadavk\u00e1m ASTM a ISO. Je obzvl\u00e1\u0161\u0165 cenn\u00fd pre v\u00fdrobn\u00e9 z\u00e1vody, ktor\u00e9 potrebuj\u00fa konzistentn\u00e9 vykazovanie a sledovate\u013en\u00e9 \u00fadaje o testovan\u00ed.<\/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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      Faktory ovplyv\u0148uj\u00face v\u00fdsledky n\u00e1razov\u00e9ho testu \u0161\u00edpok<\/h2>

      V\u00fdkonnos\u0165 \u0161\u00edpky pri n\u00e1raze ovplyv\u0148uje nieko\u013eko materi\u00e1lov\u00fdch a testovac\u00edch premenn\u00fdch:<\/p>

      • Hr\u00fabka f\u00f3lie:<\/strong> Odolnos\u0165 proti n\u00e1razu sa zvy\u0161uje, ale nie line\u00e1rne.<\/li>
      • Rovnomernos\u0165 vytl\u00e1\u010dania:<\/strong> Odch\u00fdlky meradla, l\u00ednie matrice a ne\u010distoty v\u00fdrazne ovplyv\u0148uj\u00fa v\u00fdsledky.<\/li>
      • Typ materi\u00e1lu:<\/strong> Polyetyl\u00e9n, nylon, kompozity EVOH, BOPP a viacvrstvov\u00e9 f\u00f3lie sa spr\u00e1vaj\u00fa odli\u0161ne.<\/li>

      • klimatiz\u00e1cia:<\/strong> Filmy musia by\u0165 kondicionovan\u00e9 na 23\u00b0C<\/strong> a 50% RH<\/strong> pred testovan\u00edm.<\/p><\/li><\/ul>

        Presn\u00e9 \u00fadaje si vy\u017eaduj\u00fa dodr\u017eiavanie postupov kondicionovania, spr\u00e1vnu kontrolu \u0161\u00edpok a pravideln\u00e9 overovanie upnutia, aby sa zabr\u00e1nilo sk\u013aznutiu vzorky.<\/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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        Aplik\u00e1cie n\u00e1razovej sk\u00fa\u0161ky \u0161\u00edpkami v obalovom a materi\u00e1lovom priemysle<\/h2>

        Test n\u00e1razu \u0161\u00edpky je nevyhnutn\u00fd na:<\/p>

        • F\u00f3lie na balenie potrav\u00edn, ako s\u00fa PE, LLDPE a viacvrstvov\u00e9 vreck\u00e1<\/li>
        • Farmaceutick\u00e9 obalov\u00e9 f\u00f3lie a vreck\u00e1 na zdravotn\u00edcke pom\u00f4cky<\/li>
        • Po\u013enohospod\u00e1rske f\u00f3lie, vlo\u017eky a priemyseln\u00e9 rolky<\/li>
        • Pru\u017en\u00e9 lamin\u00e1ty vy\u017eaduj\u00face presn\u00e9 hodnotenie h\u00fa\u017eevnatosti<\/li>
        • Testovanie v\u00fdskumu a v\u00fdvoja nov\u00fdch filmov\u00fdch formul\u00e1ci\u00ed<\/li>
        • Kontrola vstupn\u00e9ho materi\u00e1lu pre spracovate\u013eov a spracovate\u013esk\u00e9 podniky<\/li><\/ul>

          V\u010faka pochopeniu odolnosti vo\u010di n\u00e1razu m\u00f4\u017eu v\u00fdrobcovia navrhova\u0165 f\u00f3lie s lep\u0161ou toleranciou vo\u010di p\u00e1du, zn\u00ed\u017eenou spotrebou materi\u00e1lu a optimalizovanou mechanickou rovnov\u00e1hou.<\/p>

          V\u00fdhody pou\u017e\u00edvania n\u00e1razov\u00e9ho testera Cell Instruments<\/h2>

          The Cell Instruments Tester n\u00e1razov padaj\u00facich \u0161\u00edpok<\/strong> podporuje:<\/p>

          • Automatick\u00e9 nastavenie v\u00fd\u0161ky p\u00e1du<\/li>
          • Vysokopevnostn\u00e9 up\u00ednanie vzoriek, ktor\u00e9 zabra\u0148uje sk\u013aznutiu<\/li>
          • Presne opracovan\u00e9 hlavy \u0161\u00edpok s kontrolovan\u00fdmi toleranciami<\/li>
          • Zabudovan\u00e9 bezpe\u010dnostn\u00e9 mechanizmy na ochranu obsluhy<\/li>

          • \u0160tatistick\u00e9 vykazovanie v s\u00falade s normami ASTM D1709 a ISO 7765<\/p><\/li><\/ul>

            V\u010faka robustnej kon\u0161trukcii a pokro\u010dil\u00fdm ovl\u00e1dac\u00edm prvkom je ide\u00e1lny pre laborat\u00f3ri\u00e1, ktor\u00e9 h\u013eadaj\u00fa presnos\u0165 a opakovate\u013enos\u0165.<\/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\/sk\/wp-json\/wp\/v2\/posts\/8173","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.packqc.com\/sk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.packqc.com\/sk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.packqc.com\/sk\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/www.packqc.com\/sk\/wp-json\/wp\/v2\/comments?post=8173"}],"version-history":[{"count":0,"href":"https:\/\/www.packqc.com\/sk\/wp-json\/wp\/v2\/posts\/8173\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.packqc.com\/sk\/wp-json\/wp\/v2\/media?parent=8173"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.packqc.com\/sk\/wp-json\/wp\/v2\/categories?post=8173"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.packqc.com\/sk\/wp-json\/wp\/v2\/tags?post=8173"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}