{"id":7344,"date":"2025-08-05T10:44:15","date_gmt":"2025-08-05T02:44:15","guid":{"rendered":"https:\/\/www.qualitester.com\/?p=7344"},"modified":"2025-08-05T10:50:08","modified_gmt":"2025-08-05T02:50:08","slug":"stiffness-tester","status":"publish","type":"post","link":"https:\/\/www.qualitester.com\/lv\/stiffness-tester\/","title":{"rendered":"Stingruma testera izmanto\u0161anas apguve ISO 2493-1 pap\u012bra test\u0113\u0161anai"},"content":{"rendered":"

Ievads: Izpratne par stinguma testera lomu<\/h2>\n

\"stinguma<\/a>A stinguma testeris<\/strong> ir b\u016btiska noz\u012bme pap\u012bra, kartona un l\u012bdz\u012bgu lok\u0161\u0146u materi\u0101lu kvalit\u0101tes kontrol\u0113. Ar \u0161o instrumentu m\u0113ra parauga lieces pretest\u012bbu, sniedzot ieskatu par pap\u012bra stingr\u012bbu, apstr\u0101des \u012bpa\u0161\u012bb\u0101m un piem\u0113rot\u012bbu galapat\u0113ri\u0146am. Prec\u012bzs stinguma nov\u0113rt\u0113jums ir svar\u012bgs iepakojuma, poligr\u0101fijas un ra\u017eo\u0161anas nozar\u0113s.<\/p>\n

\u0160aj\u0101 rakst\u0101 m\u0113s izp\u0113t\u012bsim, k\u0101 veikt standartiz\u0113tu test\u0113\u0161anu, izmantojot st\u012bvuma testeri saska\u0146\u0101 ar ISO 2493-1<\/strong>, un k\u0101 tas ir saist\u012bts ar pap\u012bra stiepes iztur\u012bbas tests<\/strong>, kas \u013cauj ra\u017eot\u0101jiem nodro\u0161in\u0101t konsekvenci un kvalit\u0101ti.<\/p>\n

\n

K\u0101p\u0113c pap\u012bra izstr\u0101d\u0101jumiem ir svar\u012bga lieces stingr\u012bba<\/h2>\n

Liek\u0161anas stingr\u012bba ir tie\u0161i saist\u012bta ar ra\u017eojuma veiktsp\u0113ju. Salok\u0101maj\u0101s kartona kast\u012bt\u0113s, bro\u0161\u016br\u0101s vai iepakojuma oder\u0113jumos stingr\u012bba ietekm\u0113 apstr\u0101d\u0101jam\u012bbu, lieto\u0161anas pieredzi un aizsardz\u012bbas sp\u0113ju. Ja pap\u012brs ir p\u0101r\u0101k m\u012bksts vai p\u0101r\u0101k ciets, tas var neatbilst funkcion\u0101laj\u0101m pras\u012bb\u0101m.<\/p>\n

A stinguma testeris<\/strong> nosaka \u0161o \u012bpa\u0161\u012bbu, pielietojot noteiktu sp\u0113ku, lai pap\u012bra paraugu saliektu noteikt\u0101 le\u0146\u0137\u012b, un re\u0123istr\u0113 pretest\u012bbu. \u0160is process \u013cauj ra\u017eot\u0101jiem pie\u0146emt pamatotus l\u0113mumus par izejviel\u0101m, ra\u017eo\u0161anas procesiem un gatavajiem izstr\u0101d\u0101jumiem.<\/p>\n

\n

Principi ISO 2493-1<\/a> Test\u0113\u0161anas metode<\/h2>\n

ISO 2493-1 nosaka prec\u012bzu metodi lieces pretest\u012bbas m\u0113r\u012b\u0161anai. . stinguma testeris<\/strong> veic \u0161o nov\u0113rt\u0113\u0161anu, izmantojot kontrol\u0113tu deform\u0101ciju standarta apst\u0101k\u013cos. L\u016bk, k\u0101 \u0161\u012b metode darbojas:<\/p>\n

    \n
  • Paraugu vien\u0101 gal\u0101 fiks\u0113 vertik\u0101li.<\/li>\n
  • A na\u017ea mala<\/strong> pieliek sp\u0113ku noteikt\u0101 att\u0101lum\u0101 (parasti 50 mm vai 10 mm).<\/li>\n
  • Skava rot\u0113, izmantojot lieces le\u0146\u0137is 15\u00b0 \u00b1 0,3\u00b0.<\/strong>.<\/li>\n
  • Sp\u0113ks, kas nepiecie\u0161ams, lai sasniegtu \u0161o le\u0146\u0137i, tiek re\u0123istr\u0113ts k\u0101 iztur\u012bba pret lieci<\/strong>.<\/li>\n<\/ul>\n

    \u0160is tests nodro\u0161ina uzticamus, atk\u0101rtojamus rezult\u0101tus, kas ir b\u016btiski starplaboratoriju sal\u012bdzin\u0101jumiem un atbilst\u012bbas verifik\u0101cijai.<\/p>\n

    \n

    Testa sagatavo\u0161ana: Kondicion\u0113\u0161anas un paraugu \u0146em\u0161anas vadl\u012bnijas<\/h2>\n

    Pirms stinguma testera izmanto\u0161anas paraugi j\u0101apstr\u0101d\u0101 saska\u0146\u0101 ar ISO ieteikumiem:<\/p>\n

      \n
    • Paraugu \u0146em\u0161ana<\/strong>: Lai atlas\u012btu reprezentat\u012bvus paraugus, iev\u0113rojiet ISO 186.<\/li>\n
    • Kondicion\u0113\u0161ana<\/strong>: Uztur\u0113t standarta temperat\u016bru un mitrumu saska\u0146\u0101 ar ISO 187.<\/li>\n
    • Parauga sagatavo\u0161ana<\/strong>: Izgrieziet testa gabalus (38,0 \u00b1 0,2) mm platum\u0101 un vismaz 80 mm garum\u0101 50 mm lieces garum\u0101.<\/li>\n<\/ul>\n

      Izvairieties no t\u0101diem defektiem k\u0101 krokas vai krokas un p\u0101rliecinieties, ka ir p\u0101rbaud\u012bts gan ma\u0161\u012bnas virziens, gan \u0161\u0137\u0113rsvirziens, lai veiktu visaptvero\u0161u nov\u0113rt\u0113jumu.<\/p>\n

      \n

      Soli pa solim test\u0113\u0161anas proced\u016bra<\/h2>\n

      Veiciet lieces testu \u0161ajos apst\u0101k\u013cos:<\/p>\n

        \n
      1. Ievietojiet paraugu<\/strong> skav\u0101 ar prec\u012bzu izvirz\u012bjuma garumu (57 \u00b1 3 mm 50 mm saliekumam).<\/li>\n
      2. Iestatiet le\u0146\u0137i<\/strong> uz stinguma testera l\u012bdz 15\u00b0.<\/li>\n
      3. P\u0101rliecinieties, ka na\u017ea mala<\/strong> saskaras ar paraugu bez iepriek\u0161\u0113ja sp\u0113ka pielik\u0161anas.<\/li>\n
      4. Inici\u0113jiet rot\u0101ciju un re\u0123istr\u0113jiet sp\u0113ku noteiktaj\u0101 le\u0146\u0137\u012b.<\/li>\n
      5. Izmetiet visus rezult\u0101tus, kas ieg\u016bti no salauztiem, izliektiem vai p\u0101rm\u0113r\u012bgi deform\u0113tiem paraugiem.<\/li>\n<\/ol>\n

        Vismaz 10 der\u012bgi r\u0101d\u012bjumi<\/strong> katr\u0101 virzien\u0101, lai ieg\u016btu prec\u012bzus rezult\u0101tus.<\/p>\n