Anthu ambiri amafunsa ngatitepiKuwongolera kwapakhomo ndi kogwirizana ndi chilengedwe, monga ngati kuli ndi poizoni kapena muli ndi formaldehyde, ndi zina. Kenako tisanthula kuchokera kuzinthu zopangiratepilero.

Tepi ya nsaluwapangidwa ndi polyethylene ndi yopyapyala matenthedwe gulu monga m'munsi zakuthupi TACHIMATA ndi mkulu-makamaka mamasukidwe zomatira tepi.Ili ndi ntchito zambiri.

Choyamba, polyethylene ndi yopyapyala ndi m'munsi zipangizonsalu tepi.Polyethylene imatchedwa PE.Ndi utomoni wa thermoplastic wopezedwa ndi polymerization wa ethylene.Polyethylene ndi yopanda fungo, yosamva kutentha, asidi ndi alkali kugonjetsedwa, ndipo imakhala ndi kukhazikika kwa mankhwala.Matumba apulasitiki omwe amagwiritsidwa ntchito nthawi zambiri, zomata zotsekera m'makhitchini ndi zinthu zonse za polyethylene, ndipo gauze amadziwika ndi aliyense.Thonje lonse ndi logwirizana ndi chilengedwe ndipo mwachibadwa mulibe zinthu zovulaza.Ndizinthu zofunikira kwambiri pamakampani opanga zovala ndi nsalu.

Kenako, tiyeni tione guluu watepi. Matepi a nsaluamagawidwa kukhala zomatira zotentha zosungunuka ndi mphira molingana ndi zomatira zawo.Zomatira zotentha zosungunuka ndi mtundu wa zomatira za pulasitiki, mawonekedwe ake akuthupi adzasintha ndi kusintha kwa kutentha mkati mwa kutentha kwina, koma katundu wake wamankhwala amakhalabe wosasinthika, Ndiwopanda poizoni komanso wopanda kukoma, ndipo ndi wa mankhwala oteteza zachilengedwe.Rabala yomwe imagwiritsidwa ntchito popanga matepi nthawi zambiri imakhala mphira wachilengedwe, ndipo mphira wachilengedwe umachokera makamaka kumitengo ya rabara, motero umakhalanso wopanda poizoni komanso wopanda vuto.