III.Mapangidwe a makapu a mapepala
A. Ukadaulo wokutira wamkati wa makapu amapepala
1. Kupititsa patsogolo kutsekereza madzi ndi kutchinjiriza katundu
Ukadaulo wokutira wamkati ndi imodzi mwamapangidwe ofunikira a makapu amapepala, omwe amatha kupititsa patsogolo kusagwira madzi ndi kutsekemera kwamakapu.
Pakupanga kapu yamapepala achikhalidwe, zokutira za polyethylene (PE) nthawi zambiri zimayikidwa mkati mwa kapu yamapepala.Chophimba ichi chimakhala ndi ntchito yabwino yosalowa madzi.Ikhoza kulepheretsa zakumwa kulowa mkati mwa kapu ya pepala.Komanso akhoza kutetezapepala kapukuyambira pakupunduka ndi kusweka.Nthawi yomweyo, zokutira za PE zimathanso kupereka mphamvu zina.Itha kulepheretsa ogwiritsa ntchito kumva kutentha kwambiri akagwira makapu.
Kuphatikiza pa zokutira za PE, palinso zida zina zatsopano zokutira zomwe zimagwiritsidwa ntchito kwambiri m'makapu amapepala.Mwachitsanzo, zokutira za polyvinyl mowa (PVA).Ili ndi kukana kwamadzi bwino komanso kukana kutayikira.Chifukwa chake, imatha kusunga mkati mwa kapu yamapepala mouma.Kuphatikiza apo, zokutira za polyester amide (PA) zimakhala zowonekera kwambiri komanso ntchito yosindikiza kutentha.Ikhoza kupititsa patsogolo maonekedwe ndi ntchito yosindikiza kutentha kwa makapu a mapepala.
2. Chitsimikizo cha Chitetezo Chakudya
Monga chidebe chomwe chimagwiritsidwa ntchito kusungira chakudya ndi zakumwa, zophimba zamkati za makapu amapepala ziyenera kutsata miyezo yachitetezo cha chakudya.Izi zimatsimikizira kuti anthu atha kugwiritsa ntchito bwino.
Zida zokutira zamkati zimayenera kupatsidwa chiphaso choyenera chachitetezo cha chakudya.Monga certification ya FDA (Food and Drug Administration), certification ya EU food contact material, etc. Izi zimatsimikizira kuti zophimba mkati mwa kapu ya pepala sizimayambitsa kuipitsidwa kwa chakudya ndi zakumwa.Ndipo ndikofunikira kuwonetsetsa kuti satulutsa zinthu zovulaza, kuonetsetsa thanzi ndi chitetezo cha ogwiritsa ntchito.
B. Mapangidwe apadera a makapu a mapepala
1. Pansi kulimbikitsa mapangidwe
Pansi zolimbikitsira mapangidwe apepala kapundikuwongolera mphamvu zamapangidwe a chikho cha pepala.Izi zitha kuteteza kapu ya pepala kuti isagwe podzaza ndikugwiritsa ntchito.Pali mitundu iwiri yolimbikitsira pansi: yopindika pansi ndi yolimba.
Kupinda pansi ndi kapangidwe kopangidwa pogwiritsa ntchito njira inayake yopinda pansi pa kapu yamapepala.Mapepala angapo amatsekedwa palimodzi kuti apange pansi mwamphamvu.Izi zimathandiza kapu ya pepala kuti ipirire mphamvu yokoka ndi kupanikizika.
Pansi yolimbikitsidwa ndi mapangidwe omwe amagwiritsa ntchito mapangidwe apadera kapena zipangizo pansi pa kapu ya pepala kuti awonjezere mphamvu zamapangidwe.Mwachitsanzo, kuwonjezera makulidwe a pansi pa kapu ya pepala kapena kugwiritsa ntchito pepala lolimba kwambiri.Izi zitha kupititsa patsogolo mphamvu ya pansi pa kapu ya pepala ndikuwongolera kukana kwake.
2. Kugwiritsa ntchito chidebe zotsatira
Makapu amapepala nthawi zambiri amapachikidwa m'mitsuko panthawi yoyendetsa ndi kusunga.Izi zitha kupulumutsa malo ndikuwongolera magwiridwe antchito.Choncho, mapangidwe apadera apadera amagwiritsidwa ntchito pa makapu a mapepala.Izi zitha kukwaniritsa chidebe chabwinoko.
Mwachitsanzo, mawonekedwe a kapu ya pepala amatha kupangitsa kuti pansi pa chikhocho chiphimbe pamwamba pa kapu yotsatira ya pepala.Izi zimapangitsa kukhala kosavuta kuti makapu a mapepala agwirizane ndikusunga malo.Kuphatikiza apo, kapangidwe koyenera ka kutalika ndi m'mimba mwake kwa makapu amapepala amathanso kuwongolera kukhazikika kwa kapu ya pepala.Izi zikhoza kupewa zinthu zosakhazikika pa ndondomeko stacking.
Ukadaulo wokutira wamkati ndi kapangidwe kapadera ka makapu amapepala amatha kukulitsa magwiridwe antchito ndi magwiridwe antchito.Kupyolera mu luso lopitiliza ndi kukonza, makapu amapepala amatha kukwaniritsa zosowa za anthu pazakudya.Kuphatikiza apo, imatha kupereka mwayi wogwiritsa ntchito wotetezeka, wosavuta komanso wokonda zachilengedwe.
