Nsalu yosalukidwaIlibe ulusi wopota ndi wopota, ndi yosavuta kudula ndi kusoka, ndipo ndi yopepuka komanso yosavuta kuyiyika.
Ubwino wa nsalu yosalukidwa:
1. Kulemera kopepuka: polypropylene resin ngati chinthu chachikulu chopangira zopangira, mphamvu yokoka ndi 0.9 yokha, magawo atatu mwa asanu okha a thonje, yokhala ndi ubweya wofewa, komanso kumva bwino.
2. Yofewa: yopangidwa ndi ulusi wosalala (2-3d) ndipo imapangidwa ndi guluu wothira moto wosungunuka. Chomalizacho chili ndi kufewa pang'ono komanso chitonthozo.
3. Kutulutsa madzi ndi mpweya wokwanira: Magawo a polypropylene satenga madzi, kuchuluka kwa madzi ndi zero, ndipo zinthu zomalizidwa zimakhala ndi madzi abwino otulutsa.
4. Sichimayambitsa poizoni komanso sichimayambitsa mkwiyo: mankhwalawa amapangidwa ndi zinthu zopangira chakudya motsatira malamulo a FDA. Alibe zinthu zina zosakaniza.
5. Mankhwala oletsa mabakiteriya ndi mankhwala oletsa mabakiteriya: polypropylene ndi mtundu wa mankhwala osalala. Siwodyedwa ndi mphutsi ndipo amatha kusiyanitsa mabakiteriya ndi tizilombo m'madzi. Mankhwala oletsa mabakiteriya, dzimbiri la alkali ndi zinthu zomalizidwa sizidzakhudzidwa ndi kukokoloka kwa nthaka.
6. Katundu woletsa tizilombo toyambitsa matenda. Zinthu zomwe zimachotsedwa madzi, osati zowola, ndipo zimatha kusiyanitsa kupezeka kwa mabakiteriya ndi tizilombo mu madzi owonongeka, osati nkhungu ndi njenjete.
7. Kapangidwe ka thupi. Pogwiritsa ntchito polypropylene yozungulira mwachindunji mu netiweki yolumikizirana yotentha, mphamvu ya chinthucho ndi yabwino kuposa ya ulusi waufupi wamba, mphamvuyo ilibe kolowera, mphamvuyo ndi yofanana mbali zonse ziwiri.
8. Ponena za kuteteza chilengedwe, zinthu zambiri zosalukidwa zomwe zimagwiritsidwa ntchito ndi polypropylene, pomwe polyethylene ndiye zopangira matumba apulasitiki. Ngakhale zinthu ziwirizi zili ndi mayina ofanana, sizili zofanana pankhani ya kapangidwe ka mankhwala. Kapangidwe ka molekyulu ya mankhwala a polyethylene ndi kokhazikika kwambiri ndipo n'kovuta kuwonongeka, kotero zimatenga zaka 300 kuti matumba apulasitiki awole. Komabe, kapangidwe ka mankhwala a polypropylene sikolimba, ndipo unyolo wa molekyulu ukhoza kusweka mosavuta, womwe ungawonongeke bwino, ndikulowa munthawi yotsatira ya chilengedwe mu mawonekedwe osaopsa. Chikwama chogulira chosalukidwa chingawole kwathunthu mkati mwa masiku 90. Kuphatikiza apo, matumba ogulira a nsalu yosalukidwa amatha kugwiritsidwanso ntchito nthawi zoposa 10, ndipo kuipitsa chilengedwe pambuyo pa zinyalala ndi 10% yokha ya matumba apulasitiki.

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