Monga chida cha tsiku ndi tsiku kwa ana, ubwino wa zikwama za m'mbuyo sizimangokhudzana ndi thanzi lawo, komanso chitetezo cha moyo wawo.Ndi udindo ndi udindo wa munthu aliyense wabwino kuyang'anira ndi kuyesa zikwama zam'mbuyo ndikuteteza chitetezo cha katundu wa ophunzira.
Mawu osakira m'nkhaniyi: kuyang'anira chikwama, kuyang'anira chikwama
01. Miyezo yoyendera
Kuyang'anira zikwama za ophunzira nthawi zambiri kumatengera muyezo wa QB/T 2858-2007 "Student Bookbags", womwe ndi woyenera kuyika mabuku ophunzitsira, zothandizira pophunzitsa, ndi zinthu za ophunzira, komanso zomangira zapamapewa komanso ziwiri ndi zikwama zonyamula.Pakuwunika ndi kuyezetsa kwina, maziko omwe alipo akuphatikizapo: GB/T 2912.1 "Kutsimikizika kwa Formaldehyde mu Zovala - Gawo 1: Hydrolyzed Formaldehyde Yaulere (Njira Yothira Madzi)", GB/T 3920 "Kuyesa Kuthamanga Kwamtundu kwa Zovala - Kuthamanga Kwamtundu to Rubbing”, GB 6675-2003 “National Toy Safety Technical Specification”, GB 21207-2007 “General Safety Requirements for Student Supplies” QB/T 3826 “Njira yoyezera kukana kwa kutu pa zokutira zitsulo ndi zokutira zopangidwa ndi mankhwala zopangidwa ndi mafakitale opepuka - Neutral Njira yoyesera mchere (NSS)", QB/T 3832 "Kuwunika zotsatira za kuyesa kwa dzimbiri kwa zokutira zitsulo zopangidwa ndi mafakitale opepuka", ndi zina.
02. Mfundo zoyendera ndi njira
Zizindikiro zazikulu pakuwunika kwabwino kwa zikwama zam'mbuyo za ophunzira ndi kunyamula zolemera, kupindika, kusoka mphamvu, kufulumira kwamitundu kugundana, chitetezo chowonjezera, komanso zomwe zili muzovala za formaldehyde.Kuonjezera apo, chidwi chiyenera kuperekedwa ku chitonthozo cha msana pamene mukugwiritsa ntchito chikwama, komanso mosavuta kugwiritsa ntchito zingwe zachikwama ndi zogwirira ntchito.
Kuphatikiza pa kunena za kuyang'anira katundu, pali mfundo zingapo zomwe muyenera kuziganizira poyang'anira zikwama.Zofunikira ndizosiyana pang'ono: zofunikira za maonekedwe - maonekedwe a chikwama ayenera kutsata malamulo otsatirawa: maonekedwe onse, mawonekedwe athunthu, mizere yomveka bwino, yokhazikika komanso yosalala, yowongoka, ndi ukhondo wonse.Zipper, yokhala ndi katalikirana m'mphepete, kusokera molunjika, palibe mano osowa kapena osowa, komanso kukoka ndi kutseka kosalala.Zopangira ndi kuziyika ziyenera kukhala zosalala, zowala komanso zopanda dzimbiri zotsalira, zomata zophona, mabowo a singano, matuza, kusenda, ndi kutsekeka.Zowonjezera ziyenera kukhazikitsidwa molimba.Mizere ya suture iyenera kukhala yoyenera pamtundu wa nsalu ndi nsalu zomwe zimagwiritsidwa ntchito, ndi khalidwe ndi mtundu wofanana ndi gawo lililonse.Nsaluyo siyenera kudumpha ulusi, ulusi, zizindikiro, madontho, kapena zipsera.Maonekedwe osindikizira amafuna mawonekedwe omveka bwino, mitundu yowala, kusindikiza kolondola, palibe inki yotuluka kapena yowonekera, komanso palibe kufota kwa mtundu.Zovala za suture ziyenera kugwirizana ndi ulusi wapamwamba ndi wapansi, ndi nsonga zowongoka komanso kusiyana kwa singano.Zosokera zopanda kanthu kapena zodumphira siziloledwa kutsogolo kwakukulu ndi pachikuto cha chikwama cha mabuku.Palibe kusokera kokhota kupitirira 12mm kutalika komwe kumaloledwa.Chida chimodzi sayenera kukhala ndi singano yopanda kanthu kapena singano yosowa, ndi singano zosaposa ziwiri zopanda kanthu, singano zosowa, kapena zodumphira.
Mayeso onyamula katundu - Mayeso onyamula katundu wa zikwama za ophunzira amafunikira kuti zogwirira, zomangira, zomangira, ndi mbedza zisagwe kapena kusweka pansi pa katundu womwe watchulidwa, ndipo thupi lachikwama lisaphwanyike.
Zofunikira zolemetsa ndi izi:
Mafotokozedwe a Nambala ya Siri (kutalika)/mm Katundu/kg1＜30032300-400 (kupatula 400) 53400-50074＞50010
Kuyesa kwa swing - Chikwamacho chimanyamulidwa molingana ndi malamulo, ndipo zingwe ndi zogwirira zimayesedwa mosiyana: zingwe mumlengalenga, zingwe zimakhala zazitali kwambiri, kapena sinthani mtunda kuchokera ku nsonga yogwedezeka mpaka 50cm-60cm, kugwedezeka nthawi 30 ( kutsogolo ndi kumbuyo monga 1 nthawi), ndi kusambira ngodya ndi (60 ± 3) °.Kugwedezekako kukayima, yang'anani ngati zomangira chikwama, zogwirira, zomangira, ndi mbedza zili zotetezeka.Yesani ngati kusinthika kwa gawo lolumikizira kupitilira 20% poyerekeza ndi kutalika koyambirira mkati mwa mphindi ziwiri.Mayeso osasunthika ndi otsika - Yezerani kutalika kwa zigawo zomwe zimakhala ngati maulalo pachikwama.Chikwamacho chiyenera kunyamulidwa 1.2 kuwirikiza kulemera kwake, kuyimitsidwa mumlengalenga (ndi lamba mumtunda wautali kwambiri), ndipo pansi pa chikwamacho chiyenera kukhala 60cm pamwamba pa nthaka (yokhala ndi matabwa olimba), kuti ikhale yofanana. wopsinjika komanso wokhazikika komanso wowongoka.Pambuyo pa mphindi 30, tsitsani molunjika ndikuwona ngati zomangira, zogwirira, zomangira, ndi maunyolo ndi otetezeka.Yezerani kutalika kwa zingwe, zogwirizira, zomangira zosinthira, ndi maunyolo omwe amalumikizana mkati mwa mphindi 2, ndipo fufuzani ngati kusinthika kumaposa 20% poyerekeza ndi kutalika koyambirira.
Nthawi yotumiza: May-15-2023