Ndi chitukuko cha mafakitale a mapaipi, zipangizo zatsopano zimalembedwa pang'onopang'ono pamsika. Monga chogwiritsidwa ntchito bwino pamakampani otchinjiriza matenthedwe, chitoliro cha polyurethane chokwiriridwa mwachindunji chokwiriridwa ndi matenthedwe chimakhala ndi mawonekedwe abwino kwambiri otsekemera komanso ntchito yabwino. Imagwiritsidwa ntchito kwambiri ndi anthu ndipo yadziwikanso ndi ogwiritsa ntchito. Ndi chitoliro chanji cha polyurethane chotenthetsera chomwe chimagwiritsidwa ntchito ngati chitoliro chokwiriridwa mwachindunji? Ndikofunikira kuchita ntchito yabwino yachitetezo pakumanga, komanso kusamala pakumanga ndikofunika kwambiri. Pansipa, ndine chitoliro cha polyurethane chomwe chimakwiriridwa mwachindunji.

Mukayamba kupanga chitoliro cha polyurethane chokwiriridwa mwachindunji, kutsetsereka kwa poyambira ndi kuuma kwa pansi pa poyambira kuyenera kufufuzidwa kaye, ndipo mchenga wabwino kwambiri wa 200mm uyenera kuperekedwa ngati khushoni nthawi yomweyo, ndipo mbali ziwiri za polyurethane mwachindunji-kukwiriridwa kutchinjiriza chitoliro ayenera kugwiritsidwanso ntchito. Wokutidwa ndi mchenga wabwino. Izi ndizosavuta pomanga komanso chitetezo cha mapaipi otsekemera a polyurethane.

Makamaka chitoliro chosungunula cha polyurethane chikayikidwa, kuyezetsa kwamadzi kuyenera kuchitika. Pambuyo podutsa mayeso a kuthamanga kwa madzi, chithandizo cha mawonekedwe a thovu chikhoza kuchitidwa. Pa nthawi ya mawonekedwe a thovu mankhwala, kuyeretsa m`kamwa wa mawonekedwe zitsulo chitoliro ayenera kutsimikiziridwa. Uku ndikukweza utali. Chitetezo cha mapaipi oteteza polyurethane.

Pambuyo pake, chitoliro chotchinjiriza cha polyurethane chikalowa mnyumbamo kapena ngalande, iyenera kuwonjezeredwa kudzera pakhoma la khoma kuti payipiyo ikhale yotetezeka. Kumene, unsembe wa polyurethane kutchinjiriza chitoliro ndi yabwino, koma kusamala ndi chinsinsi kusintha chitetezo cha payipi, choncho muyenera kulabadira mtundu uwu wa ntchito poika polyurethane kutchinjiriza chitoliro.