{"id":1640,"date":"2026-07-28T08:51:09","date_gmt":"2026-07-28T08:51:09","guid":{"rendered":"https:\/\/www.packtests.com\/?post_type=standard&p=1640"},"modified":"2026-07-28T08:51:11","modified_gmt":"2026-07-28T08:51:11","slug":"iso-9895","status":"publish","type":"standard","link":"https:\/\/www.packtests.com\/cs\/standard\/iso-9895\/","title":{"rendered":"ISO 9895"},"content":{"rendered":"

Co je norma ISO 9895?<\/h2>\n\n\n\n

ISO 9895<\/strong> ur\u010duje metoda zkou\u0161en\u00ed pevnosti v tlaku u kr\u00e1tk\u00fdch rozp\u011bt\u00ed<\/strong> slou\u017e\u00ed k stanoven\u00ed pevnosti pap\u00edru a lepenky v tlaku p\u0159i velmi kr\u00e1tk\u00e9m voln\u00e9m rozp\u011bt\u00ed. Tato zkou\u0161ka je \u0161iroce uzn\u00e1van\u00e1 pro hodnocen\u00ed vlastn\u00ed pevnosti vl\u00e1knit\u00fdch materi\u00e1l\u016f v tlaku, p\u0159i\u010dem\u017e minimalizuje vlivy vzp\u011bru, kter\u00e9 obvykle ovliv\u0148uj\u00ed zkou\u0161ky v tlaku s del\u0161\u00edm rozp\u011bt\u00edm.<\/p>\n\n\n\n

Pro v\u00fdrobce vlnit\u00e9 lepenky, podkladov\u00e9 lepenky, testlineru, kraftov\u00e9ho pap\u00edru a dal\u0161\u00edch obalov\u00fdch materi\u00e1l\u016f na b\u00e1zi pap\u00edru, ISO 9895<\/strong> poskytuje rychl\u00fd, opakovateln\u00fd a standardizovan\u00fd p\u0159\u00edstup k m\u011b\u0159en\u00ed kompresn\u00edch vlastnost\u00ed. \u00dadaje z\u00edskan\u00e9 touto metodou hraj\u00ed kl\u00ed\u010dovou roli p\u0159i v\u00fdvoji materi\u00e1l\u016f, kontrole kvality, kvalifikaci dodavatel\u016f a optimalizaci proces\u016f.<\/p>\n\n\n\n

A tlakov\u00e1 zku\u0161ebn\u00ed stanice pro kr\u00e1tk\u00e9 rozp\u011bt\u00ed<\/strong> Tento p\u0159\u00edstroj, navr\u017een\u00fd v souladu s normou ISO 9895, umo\u017e\u0148uje laborato\u0159\u00edm dosahovat vysoce opakovateln\u00fdch v\u00fdsledk\u016f, kter\u00e9 p\u0159esn\u011b odr\u00e1\u017eej\u00ed pevnost vl\u00e1knit\u00e9 s\u00edt\u011b pap\u00edru a lepenky. Tato m\u011b\u0159en\u00ed pom\u00e1haj\u00ed in\u017een\u00fdr\u016fm p\u0159edv\u00eddat vlastnosti obal\u016f je\u0161t\u011b p\u0159edt\u00edm, ne\u017e se materi\u00e1ly zpracuj\u00ed na hotov\u00e9 kartonov\u00e9 nebo vlnit\u00e9 krabice.<\/p>\n\n\n\n

\"ISO<\/figure>\n\n\n\n

Pro\u010d je norma ISO 9895 d\u016fle\u017eit\u00e1?<\/h2>\n\n\n\n

Pevnost v tlaku je jednou z nejd\u016fle\u017eit\u011bj\u0161\u00edch mechanick\u00fdch vlastnost\u00ed obalov\u00e9ho pap\u00edru. Materi\u00e1ly s nedostate\u010dnou odolnost\u00ed proti tlaku se mohou deformovat b\u011bhem zpracov\u00e1n\u00ed, stohov\u00e1n\u00ed, p\u0159epravy nebo skladov\u00e1n\u00ed.<\/p>\n\n\n\n

Na str\u00e1nk\u00e1ch Zkou\u0161ka pevnosti v tlaku pap\u00edru a lepenky p\u0159i kr\u00e1tk\u00e9m rozp\u011bt\u00ed<\/strong> nab\u00edz\u00ed n\u011bkolik v\u00fdznamn\u00fdch v\u00fdhod:<\/p>\n\n\n\n

    \n
  • M\u011b\u0159\u00ed vlastn\u00ed pevnost v tlaku s minim\u00e1ln\u00edm vlivem vzp\u011bru<\/li>\n\n\n\n
  • Posuzuje kvalitu spojen\u00ed optick\u00fdch vl\u00e1ken<\/li>\n\n\n\n
  • Podporuje kvalifikaci surovin<\/li>\n\n\n\n
  • Zvy\u0161uje konzistenci v\u00fdroby<\/li>\n\n\n\n
  • Pom\u00e1h\u00e1 optimalizovat procesy v\u00fdroby pap\u00edru<\/li>\n\n\n\n
  • P\u0159edpov\u00edd\u00e1 vlastnosti vlnit\u00e9 lepenky<\/li>\n\n\n\n
  • Sni\u017euje po\u010det p\u0159\u00edpad\u016f po\u0161kozen\u00ed obal\u016f b\u011bhem p\u0159epravy<\/li>\n<\/ul>\n\n\n\n

    Na rozd\u00edl od b\u011b\u017en\u00fdch zkou\u0161ek tlakem, p\u0159i nich\u017e se pou\u017e\u00edvaj\u00ed del\u0161\u00ed voln\u00e9 \u00faseky zku\u0161ebn\u00edho t\u011blesa, metoda podle normy ISO 9895 umo\u017e\u0148uje zjistit skute\u010dn\u00e9 chov\u00e1n\u00ed materi\u00e1lu p\u0159i tlaku d\u00edky pou\u017eit\u00ed voln\u00e9ho \u00faseku o d\u00e9lce pouh\u00fdch 0,70 mm.<\/p>\n\n\n\n

    Princip metody zkou\u0161en\u00ed pevnosti v tlaku u kr\u00e1tk\u00fdch rozp\u011bt\u00ed<\/h2>\n\n\n\n

    Na str\u00e1nk\u00e1ch metoda zkou\u0161en\u00ed pevnosti v tlaku u kr\u00e1tk\u00fdch rozp\u011bt\u00ed<\/strong> spo\u010d\u00edv\u00e1 v p\u016fsoben\u00ed tlakov\u00e9 s\u00edly na \u00fazk\u00fd pap\u00edrov\u00fd vzorek, kter\u00fd je pevn\u011b upnut mezi dv\u011bma p\u0159esn\u00fdmi \u010delistmi.<\/p>\n\n\n\n

    Testovac\u00ed postup zahrnuje:<\/p>\n\n\n\n

      \n
    1. P\u0159ipravte vzorek o \u0161\u00ed\u0159ce p\u0159ibli\u017en\u011b 15 mm.<\/li>\n\n\n\n
    2. Vzorek pevn\u011b upn\u011bte na up\u00ednac\u00ed d\u00e9lce 30 mm.<\/li>\n\n\n\n
    3. Mezi svorkami udr\u017eujte volnou mezeru 0,70 mm.<\/li>\n\n\n\n
    4. Sv\u011brky posu\u0148te k sob\u011b kontrolovanou rychlost\u00ed.<\/li>\n\n\n\n
    5. Zaznamenejte maxim\u00e1ln\u00ed kompresn\u00ed s\u00edlu t\u011bsn\u011b p\u0159ed poru\u0161en\u00edm.<\/li>\n\n\n\n
    6. Vypo\u010d\u00edtejte pevnost v tlaku pro kr\u00e1tk\u00fd rozp\u011bt\u00ed na z\u00e1klad\u011b nam\u011b\u0159en\u00e9 s\u00edly.<\/li>\n<\/ol>\n\n\n\n

      Vzhledem k tomu, \u017ee d\u00e9lka voln\u00e9ho rozp\u011bt\u00ed je extr\u00e9mn\u011b kr\u00e1tk\u00e1, doch\u00e1z\u00ed u zku\u0161ebn\u00edho t\u011blesa k poru\u0161e p\u0159edev\u0161\u00edm v d\u016fsledku stla\u010den\u00ed vl\u00e1ken, nikoli struktur\u00e1ln\u00edho vzp\u011bru, co\u017e umo\u017e\u0148uje z\u00edskat reprezentativn\u011bj\u0161\u00ed \u00fadaje o vlastn\u00ed pevnosti materi\u00e1lu.<\/p>\n\n\n\n

      Jak funguje zku\u0161ebn\u00ed stroj pro zkou\u0161ky tlakem s kr\u00e1tk\u00fdm rozp\u011bt\u00edm?<\/h2>\n\n\n\n

      Profesion\u00e1l tlakov\u00e1 zku\u0161ebn\u00ed stanice pro kr\u00e1tk\u00e9 rozp\u011bt\u00ed<\/strong> vyu\u017e\u00edv\u00e1 p\u0159esn\u00e9 mechanick\u00e9 a elektronick\u00e9 syst\u00e9my, kter\u00e9 zaji\u0161\u0165uj\u00ed opakovatelnost testov\u00e1n\u00ed.<\/p>\n\n\n\n

      Mezi typick\u00e9 sou\u010d\u00e1sti syst\u00e9mu pat\u0159\u00ed:<\/p>\n\n\n\n

      Komponenta<\/th>Funkce<\/th><\/tr><\/thead>
      Pneumatick\u00e9 svorky<\/td>Upevn\u011bte vzorky s konstantn\u00ed silou<\/td><\/tr>
      P\u0159esn\u00fd nakl\u00e1dac\u00ed syst\u00e9m<\/td>Prov\u00e1d\u00ed \u0159\u00edzen\u00fd stisk<\/td><\/tr>
      Sn\u00edma\u010d zat\u00ed\u017een\u00ed s vysok\u00fdm rozli\u0161en\u00edm<\/td>P\u0159esn\u011b m\u011b\u0159\u00ed kompresn\u00ed s\u00edlu<\/td><\/tr>
      \u0158\u00eddic\u00ed syst\u00e9m PLC<\/td>Automatizuje prov\u00e1d\u011bn\u00ed test\u016f<\/td><\/tr>
      Dotykov\u00e9 rozhran\u00ed<\/td>Zjednodu\u0161uje nastaven\u00ed parametr\u016f<\/td><\/tr>
      Mechanismus \u0159\u00edzen\u00ed pohybu<\/td>Udr\u017euje konstantn\u00ed rychlost testu<\/td><\/tr>
      Software pro zpracov\u00e1n\u00ed dat<\/td>Vypo\u010d\u00edt\u00e1 pevnost v tlaku<\/td><\/tr>
      Rozhran\u00ed tisk\u00e1rny nebo po\u010d\u00edta\u010de<\/td>Vytv\u00e1\u0159\u00ed zku\u0161ebn\u00ed protokoly<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

      Tyto komponenty zaji\u0161\u0165uj\u00ed soulad s normou ISO 9895 a z\u00e1rove\u0148 minimalizuj\u00ed vliv individu\u00e1ln\u00edch rozd\u00edl\u016f obsluhy.<\/p>\n\n\n\n

      SCT-01 \u2013 Zku\u0161ebn\u00ed stroj pro zkou\u0161ky tlakov\u00e9 pevnosti s kr\u00e1tk\u00fdm rozp\u011bt\u00edm<\/h2>\n\n\n\n

      Na str\u00e1nk\u00e1ch SCT-01 \u2013 Zku\u0161ebn\u00ed stroj pro zkou\u0161ky tlakov\u00e9 pevnosti s kr\u00e1tk\u00fdm rozp\u011bt\u00edm<\/strong> je speci\u00e1ln\u011b vyvinut pro prov\u00e1d\u011bn\u00ed Zkou\u0161ka pevnosti v tlaku pap\u00edru a lepenky p\u0159i kr\u00e1tk\u00e9m rozp\u011bt\u00ed<\/strong> v souladu s mezin\u00e1rodn\u00edmi normami.<\/p>\n\n\n\n

      Jeho konstrukce umo\u017e\u0148uje prov\u00e1d\u011bn\u00ed rutinn\u00edch laboratorn\u00edch test\u016f, kontrolu kvality ve v\u00fdrob\u011b a v\u00fdzkumn\u00e9 aplikace t\u00fdkaj\u00edc\u00ed se materi\u00e1l\u016f, jako jsou lepenka na obaly, kraftov\u00fd pap\u00edr, podkladov\u00e1 lepenka a karton.<\/p>\n\n\n\n

      Hlavn\u00ed vlastnosti<\/h3>\n\n\n\n

      Provoz \u0159\u00edzen\u00fd programovateln\u00fdm logick\u00fdm automatem (PLC)<\/strong><\/p>\n\n\n\n

      \u0158\u00eddic\u00ed syst\u00e9m PLC zaji\u0161\u0165uje stabiln\u00ed \u0159\u00edzen\u00ed pohybu a vysoce opakovateln\u00e9 testov\u00e1n\u00ed.<\/p>\n\n\n\n

      Pneumatick\u00e9 up\u00edn\u00e1n\u00ed vzork\u016f<\/strong><\/p>\n\n\n\n

      Rovnom\u011brn\u00e1 up\u00ednac\u00ed s\u00edla zaji\u0161\u0165uje bezpe\u010dn\u00e9 upevn\u011bn\u00ed vzorku a minimalizuje chyby p\u0159i zkou\u0161k\u00e1ch.<\/p>\n\n\n\n

      Nastaviteln\u00e1 rychlost testu<\/strong><\/p>\n\n\n\n

      U\u017eivatel\u00e9 mohou optimalizovat testovac\u00ed podm\u00ednky pro r\u016fzn\u00e9 druhy materi\u00e1l\u016f.<\/p>\n\n\n\n

      P\u0159esn\u00e9 m\u011b\u0159en\u00ed s\u00edly<\/strong><\/p>\n\n\n\n

      Sn\u00edma\u010d zat\u00ed\u017een\u00ed s vysok\u00fdm rozli\u0161en\u00edm zaji\u0161\u0165uje p\u0159esn\u00e1 m\u011b\u0159en\u00ed stla\u010den\u00ed po celou dobu zku\u0161ebn\u00edho cyklu.<\/p>\n\n\n\n

      V\u00edce jednotek<\/strong><\/p>\n\n\n\n

      V\u00fdsledky lze zobrazit v:<\/p>\n\n\n\n

        \n
      • Newton (N)<\/li>\n\n\n\n
      • Kilogramov\u00e1 s\u00edla (kgf)<\/li>\n\n\n\n
      • Libra-s\u00edla (lbf)<\/li>\n<\/ul>\n\n\n\n

        Integrovan\u00e9 funkce pro tvorbu report\u016f<\/strong><\/p>\n\n\n\n

        D\u00edky integrovan\u00e9 funkci tisku lze v\u00fdsledky test\u016f okam\u017eit\u011b zdokumentovat.<\/p>\n\n\n\n

        Voliteln\u00e1 po\u010d\u00edta\u010dov\u00e1 komunikace<\/strong><\/p>\n\n\n\n

        Rozhran\u00ed RS-232 umo\u017e\u0148uje integraci s laboratorn\u00edm softwarem a spr\u00e1vu dat.<\/p>\n\n\n\n

        Technick\u00e9 specifikace<\/h2>\n\n\n\n
        Parametr<\/th>Specifikace<\/th><\/tr><\/thead>
        Testovac\u00ed rozsah<\/td>1\u2013500 N (nastaviteln\u00e9)<\/td><\/tr>
        Kompresn\u00ed vzd\u00e1lenost<\/td>0,3\u20132 mm<\/td><\/tr>
        Up\u00ednac\u00ed d\u00e9lka<\/td>30 \u00b1 0,5 mm<\/td><\/tr>
        Nepodporovan\u00fd \u00fasek<\/td>0,70 mm<\/td><\/tr>
        Rychlost testu<\/td>3 \u00b10,1 mm\/min<\/td><\/tr>
        Usnesen\u00ed<\/td>0,01 N<\/td><\/tr>
        Velikost vzorku<\/td>15 \u00d7 75 mm<\/td><\/tr>
        Tlak plynu<\/td>0,4\u20130,7 MPa<\/td><\/tr>
        Plynov\u00fd p\u0159\u00edvod<\/td>\u03a66 mm<\/td><\/tr>
        Nap\u00e1jen\u00ed<\/td>110\u2013220 V st\u0159\u00eddav\u00e9ho proudu, 50\/60 Hz<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

        Vyu\u017eit\u00ed zkou\u0161ek podle normy ISO 9895<\/h2>\n\n\n\n

        Na str\u00e1nk\u00e1ch ISO 9895<\/strong> Tato metoda se hojn\u011b vyu\u017e\u00edv\u00e1 v pap\u00edrensk\u00e9m a obalov\u00e9m pr\u016fmyslu.<\/p>\n\n\n\n

        Mezi typick\u00e9 oblasti pou\u017eit\u00ed pat\u0159\u00ed:<\/p>\n\n\n\n