{"id":1301,"date":"2026-03-02T06:56:21","date_gmt":"2026-03-02T06:56:21","guid":{"rendered":"https:\/\/www.wrapfilmtest.com\/?p=1301"},"modified":"2026-03-02T06:56:24","modified_gmt":"2026-03-02T06:56:24","slug":"pvc-cling-film-dart-impact-test","status":"publish","type":"post","link":"https:\/\/www.wrapfilmtest.com\/cs\/pvc-cling-film-dart-impact-test","title":{"rendered":"Zkou\u0161ka odolnosti plastov\u00fdch f\u00f3li\u00ed proti n\u00e1razu \u0161ipkou z PVC a metody ASTM D1709"},"content":{"rendered":"

\u00davod do n\u00e1razov\u00e9 zkou\u0161ky PVC f\u00f3li\u00ed<\/h3>\n\n\n\n

The Zkou\u0161ka n\u00e1razem \u0161ipky z PVC f\u00f3lie<\/strong> je z\u00e1sadn\u00ed pro hodnocen\u00ed odolnosti PVC f\u00f3li\u00ed proti n\u00e1razu, kter\u00e9 se b\u011b\u017en\u011b pou\u017e\u00edvaj\u00ed v obalov\u00fdch aplikac\u00edch. Tato zkou\u0161ka m\u011b\u0159\u00ed schopnost f\u00f3lie odol\u00e1vat n\u00e1raz\u016fm voln\u011b padaj\u00edc\u00edch p\u0159edm\u011bt\u016f, co\u017e simuluje re\u00e1ln\u00e9 podm\u00ednky, kdy m\u016f\u017ee f\u00f3lie za\u017e\u00edt n\u00e1hl\u00e9 a siln\u00e9 n\u00e1razy. Pochopen\u00ed odolnost plastov\u00e9 f\u00f3lie<\/strong> v\u016f\u010di takov\u00fdm n\u00e1raz\u016fm je rozhoduj\u00edc\u00ed pro zaji\u0161t\u011bn\u00ed jejich spolehlivosti a trvanlivosti, zejm\u00e9na v odv\u011btv\u00edch, jako jsou potravin\u00e1\u0159sk\u00e9 obaly, obaly pro zdravotnictv\u00ed a dal\u0161\u00ed.<\/p>\n\n\n\n

\"N\u00e1razov\u00e1<\/a><\/figure>\n\n\n\n

Porozum\u011bn\u00ed norm\u011b ASTM D1709 a jej\u00ed aplikaci na PVC f\u00f3lie<\/h3>\n\n\n\n

The ASTM D1709<\/strong> norma uv\u00e1d\u00ed dv\u011b kl\u00ed\u010dov\u00e9 zku\u0161ebn\u00ed metody pro stanoven\u00ed odolnosti plastov\u00fdch f\u00f3li\u00ed, v\u010detn\u011b f\u00f3li\u00ed z PVC, proti n\u00e1razu. Tyto metody, Zku\u0161ebn\u00ed metoda A<\/strong> a Zku\u0161ebn\u00ed metoda B<\/strong>, pomoc\u00ed voln\u011b padaj\u00edc\u00ed \u0161ipky zas\u00e1hnout f\u00f3lii a posoudit jej\u00ed schopnost odolat n\u00e1razu.<\/p>\n\n\n\n

    \n
  1. Zku\u0161ebn\u00ed metoda A:<\/strong> Jedn\u00e1 se o p\u016flkulatou \u0161ipku o pr\u016fm\u011bru 38,10 mm upu\u0161t\u011bnou z v\u00fd\u0161ky 0,66 metru.<\/li>\n\n\n\n
  2. Zku\u0161ebn\u00ed metoda B:<\/strong> Pou\u017e\u00edv\u00e1 v\u011bt\u0161\u00ed \u0161ipku o pr\u016fm\u011bru 50,80 mm, kter\u00e1 se pou\u0161t\u00ed z v\u00fd\u0161ky 1,52 metru.<\/li>\n<\/ol>\n\n\n\n

    Ob\u011b metody umo\u017e\u0148uj\u00ed v\u00fdrobc\u016fm vypo\u010d\u00edtat hmotnost p\u0159i selh\u00e1n\u00ed n\u00e1razu<\/strong> (hmotnost, kter\u00e1 zp\u016fsob\u00ed selh\u00e1n\u00ed vzork\u016f 50%) za stanoven\u00fdch podm\u00ednek n\u00e1razu. Tato hmotnost p\u0159i selh\u00e1n\u00ed pom\u00e1h\u00e1 ur\u010dit, jak je f\u00f3lie odoln\u00e1 proti po\u0161kozen\u00ed p\u0159i re\u00e1ln\u00e9m pou\u017eit\u00ed.<\/p>\n\n\n\n

    Odolnost plastov\u00e9 f\u00f3lie: Kl\u00ed\u010dov\u00e9 faktory<\/h3>\n\n\n\n

    The odolnost plastov\u00e9 f\u00f3lie<\/strong> na dopad m\u00e1 vliv v\u00edce faktor\u016f, jako jsou:<\/p>\n\n\n\n

      \n
    • Tlou\u0161\u0165ka filmu:<\/strong> Siln\u011bj\u0161\u00ed f\u00f3lie maj\u00ed obvykle vy\u0161\u0161\u00ed odolnost proti n\u00e1razu, ale mezi tlou\u0161\u0165kou a odolnost\u00ed proti n\u00e1razu neexistuje jednoduch\u00e1 korelace.<\/li>\n\n\n\n
    • Materi\u00e1lov\u00e9 slo\u017een\u00ed:<\/strong> PVC f\u00f3lie maj\u00ed jedine\u010dn\u00e9 vlastnosti, kter\u00e9 ovliv\u0148uj\u00ed jejich schopnost absorbovat energii n\u00e1razu. Nap\u0159\u00edklad typ pou\u017eit\u00e9 PVC prysky\u0159ice m\u016f\u017ee hr\u00e1t roli p\u0159i ur\u010dov\u00e1n\u00ed odolnosti f\u00f3lie.<\/li>\n\n\n\n
    • Kondice:<\/strong> Vzorky filmu jsou p\u0159ed testov\u00e1n\u00edm upraveny na specifick\u00e9 teplotn\u00ed a vlhkostn\u00ed podm\u00ednky, aby byla zaji\u0161t\u011bna konzistence v\u0161ech test\u016f.<\/li>\n\n\n\n
    • Vady filmu:<\/strong> P\u0159\u00edtomnost vr\u00e1sek, d\u011br nebo jin\u00fdch nedokonalost\u00ed m\u016f\u017ee v\u00fdrazn\u011b sn\u00ed\u017eit odolnost f\u00f3lie proti n\u00e1razu.<\/li>\n<\/ul>\n\n\n\n

      Postup zkou\u0161ky odolnosti proti n\u00e1razu<\/h3>\n\n\n\n
        \n
      1. P\u0159\u00edprava vzorku:<\/strong> Zku\u0161ebn\u00ed vzorky by m\u011bly b\u00fdt bez vad, jako jsou d\u00edrky nebo vr\u00e1sky. F\u00f3lie by m\u011bla b\u00fdt p\u0159ed zkou\u0161kou kondicionov\u00e1na p\u0159i teplot\u011b 23 \u00b1 2 \u00b0C a relativn\u00ed vlhkosti 50 \u00b1 10% po dobu nejm\u00e9n\u011b 40 hodin.<\/li>\n\n\n\n
      2. Nastaven\u00ed testu:<\/strong> Vzorek PVC f\u00f3lie je pevn\u011b upnut mezi dv\u011b desky. Pot\u00e9 se z p\u0159edem stanoven\u00e9 v\u00fd\u0161ky vypust\u00ed \u0161ipka s ur\u010denou hmotnost\u00ed. Zkou\u0161ka se opakuje zvy\u0161ov\u00e1n\u00edm nebo sni\u017eov\u00e1n\u00edm hmotnosti \u0161ipky, aby se ur\u010dil bod selh\u00e1n\u00ed.<\/li>\n\n\n\n
      3. Zku\u0161ebn\u00ed metody:<\/strong> Ob\u011b metody definovan\u00e9 v norm\u011b ASTM D1709 umo\u017e\u0148uj\u00ed variabilitu zku\u0161ebn\u00edch podm\u00ednek:\n
          \n
        • Zku\u0161ebn\u00ed metoda A:<\/strong> Vhodn\u00e9 pro filmy, kter\u00e9 vy\u017eaduj\u00ed hmotnost od 50 g do 6 kg pro selh\u00e1n\u00ed.<\/li>\n\n\n\n
        • Zku\u0161ebn\u00ed metoda B:<\/strong> Vhodn\u00e9 pro filmy s hmotnost\u00ed od 0,3 kg do 6 kg.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
        • Anal\u00fdza v\u00fdsledk\u016f:<\/strong> Zkou\u0161ka vyhodnocuje hmotnost \u0161ipky, kter\u00e1 zp\u016fsob\u00ed selh\u00e1n\u00ed 50% vzork\u016f. To poskytuje konzistentn\u00ed m\u011b\u0159\u00edtko toho, jak dob\u0159e bude PVC p\u0159ilnav\u00e1 f\u00f3lie fungovat v re\u00e1ln\u00fdch podm\u00ednk\u00e1ch, nap\u0159\u00edklad p\u0159i balen\u00ed nebo p\u0159eprav\u011b.<\/li>\n<\/ol>\n\n\n\n

          Stretch f\u00f3lie a jej\u00ed odolnost proti n\u00e1razu<\/h3>\n\n\n\n

          Balic\u00ed stretch f\u00f3lie<\/strong> je b\u011b\u017en\u00fd obalov\u00fd materi\u00e1l, zejm\u00e9na v logistice. Jeho schopnost odol\u00e1vat n\u00e1razov\u00fdm sil\u00e1m je rozhoduj\u00edc\u00ed pro zaji\u0161t\u011bn\u00ed bezpe\u010dnosti zabalen\u00e9ho zbo\u017e\u00ed. Na str\u00e1nk\u00e1ch . test dopadu \u0161ipky<\/strong> hraje d\u016fle\u017eitou roli p\u0159i posuzov\u00e1n\u00ed toho, jak dob\u0159e m\u016f\u017ee stretch f\u00f3lie odol\u00e1vat n\u00e1raz\u016fm, kter\u00fdm m\u016f\u017ee b\u00fdt vystavena b\u011bhem p\u0159epravy nebo manipulace.<\/p>\n\n\n\n

          \u00daloha tester\u016f n\u00e1razu voln\u011b padaj\u00edc\u00edch \u0161ipek<\/h3>\n\n\n\n

          A voln\u011b padaj\u00edc\u00ed \u0161ipka - n\u00e1razov\u00fd tester<\/strong> je ide\u00e1ln\u00edm n\u00e1strojem pro prov\u00e1d\u011bn\u00ed Zkou\u0161ka n\u00e1razem \u0161ipky z PVC f\u00f3lie<\/strong>. Tyto testery jsou navr\u017eeny tak, aby z ur\u010dit\u00e9 v\u00fd\u0161ky pou\u0161t\u011bly \u0161ipky o kontrolovan\u00e9 hmotnosti, \u010d\u00edm\u017e se zajist\u00ed p\u0159esn\u00e9 a konzistentn\u00ed m\u011b\u0159en\u00ed odolnosti f\u00f3lie proti n\u00e1razu. Mezi kl\u00ed\u010dov\u00e9 vlastnosti tester\u016f n\u00e1razu voln\u011b padaj\u00edc\u00ed \u0161ipky pat\u0159\u00ed:<\/p>\n\n\n\n

            \n
          • Nastaviteln\u00e1 z\u00e1va\u017e\u00ed na \u0161ipky:<\/strong> Pro p\u0159izp\u016fsoben\u00ed r\u016fzn\u00fdm zku\u0161ebn\u00edm podm\u00ednk\u00e1m a typ\u016fm f\u00f3li\u00ed.<\/li>\n\n\n\n
          • P\u0159esn\u00e9 v\u00fd\u0161ky p\u00e1du:<\/strong> Zajistit, aby energie n\u00e1razu odpov\u00eddala norm\u00e1m ASTM D1709.<\/li>\n\n\n\n
          • Spolehliv\u00fd sb\u011br dat:<\/strong> Mnoho tester\u016f je vybaveno digit\u00e1ln\u00edmi displeji a funkc\u00ed z\u00e1znamu dat, kter\u00e9 pom\u00e1haj\u00ed sledovat v\u00fdsledky a zvy\u0161uj\u00ed efektivitu testov\u00e1n\u00ed.<\/li>\n<\/ul>\n\n\n\n

            Z\u00e1v\u011br<\/h3>\n\n\n\n

            The Zkou\u0161ka n\u00e1razem \u0161ipky z PVC f\u00f3lie<\/strong> je d\u016fle\u017eit\u00fdm procesem pro hodnocen\u00ed trvanlivosti a odolnosti plastov\u00fdch f\u00f3li\u00ed pou\u017e\u00edvan\u00fdch v obalech. Sledov\u00e1n\u00edm Normy ASTM D1709<\/strong>, mohou v\u00fdrobci zajistit, aby jejich f\u00f3lie spl\u0148ovaly pot\u0159ebn\u00e1 v\u00fdkonnostn\u00ed krit\u00e9ria pro r\u016fzn\u00e9 aplikace, v\u010detn\u011b balic\u00ed stretch f\u00f3lie<\/strong>. Pou\u017eit\u00ed voln\u011b padaj\u00edc\u00ed \u0161ipka - n\u00e1razov\u00fd tester<\/strong> umo\u017e\u0148uje p\u0159esn\u00e9 a spolehliv\u00e9 testov\u00e1n\u00ed, kter\u00e9 je nezbytn\u00e9 pro udr\u017een\u00ed kontroly kvality a zaji\u0161t\u011bn\u00ed optim\u00e1ln\u00edho fungov\u00e1n\u00ed f\u00f3lie v re\u00e1ln\u00fdch podm\u00ednk\u00e1ch.<\/p>\n\n\n\n

            Pro podniky, kter\u00e9 cht\u011bj\u00ed roz\u0161\u00ed\u0159it sv\u00e9 mo\u017enosti testov\u00e1n\u00ed materi\u00e1l\u016f, Cell Instruments Co., Ltd.<\/strong> poskytuje pokro\u010dil\u00e9 testovac\u00ed za\u0159\u00edzen\u00ed, v\u010detn\u011b vysoce p\u0159esn\u00e9ho voln\u011b padaj\u00edc\u00ed \u0161ipky<\/strong>, kter\u00e9 pom\u00e1haj\u00ed posoudit trvanlivost PVC f\u00f3li\u00ed a dal\u0161\u00edch materi\u00e1l\u016f. Pou\u017eit\u00edm spr\u00e1vn\u00fdch n\u00e1stroj\u016f a dodr\u017eov\u00e1n\u00edm zaveden\u00fdch norem mohou v\u00fdrobci zajistit, aby jejich v\u00fdrobky spl\u0148ovaly nejvy\u0161\u0161\u00ed standardy v\u00fdkonnosti a spolehlivosti.<\/p>","protected":false},"excerpt":{"rendered":"

            \u00davod do n\u00e1razov\u00e9 zkou\u0161ky PVC f\u00f3li\u00ed \u0161ipkou N\u00e1razov\u00e1 zkou\u0161ka PVC f\u00f3li\u00ed \u0161ipkou je nezbytn\u00e1 pro hodnocen\u00ed odolnosti PVC f\u00f3li\u00ed, kter\u00e9 se b\u011b\u017en\u011b pou\u017e\u00edvaj\u00ed v obalov\u00fdch aplikac\u00edch, proti n\u00e1razu. Tato zkou\u0161ka m\u011b\u0159\u00ed schopnost f\u00f3lie odol\u00e1vat n\u00e1raz\u016fm voln\u011b padaj\u00edc\u00edch p\u0159edm\u011bt\u016f, co\u017e simuluje re\u00e1ln\u00e9 podm\u00ednky, kdy m\u016f\u017ee f\u00f3lie za\u017e\u00edt n\u00e1hl\u00fd, prudk\u00fd a [...]","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1301","post","type-post","status-publish","format-standard","hentry","category-wrap-film-test"],"yoast_head":"\nPVC Cling Film Dart Impact Test and ASTM D1709 Standards<\/title>\n<meta name=\"description\" content=\"Explore PVC Cling Film dart impact test, including resistance of plastic film and ASTM D1709 standards. 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