Weelka waxaa badanaa laga sameeyaa qalabyo xinjiyin tayo sare leh sida xumbada polyurethane ee loo yaqaan 'polyurethane xukunka' polyurethane laam '.
Alaabooyinkan taxanaha ah waxay leeyihiin mugga dhexdhexaadka ah waxayna siisaa xulasho aad u wanaagsan oo loogu talagalay dadka isticmaala ee u baahan inay ku kaydiyaan saambalo bayooloji ama dareere nitrogen gudaha waqti dheer oo ka hooseeya xaaladaha taagan.
Mabda'a shaqaynta ee haanta bakhaarka neefsashada ee dareeraha ah waa in la nadiifiyo nitrogen oo ku keydi haanta gudaha ah.
Hay'adda bakhaarka dareeraha ah waxay ka kooban tahay haanta haanta dibadda, haanta haanta haanta, lakabka haanta, dahaarka dahaarka, cabirka heerka dareeraha, cabirka cadaadiska iyo tuubada nabdoonaanta
Haanta kaydinta dareeraha ah ee dareeraha ah waa labajib lakab oo lagu rakibay oo ah budada bannaan ee lagu keydiyo. Hayrka gudaha waxaa laga sameeyay bir bir aan argagax lahayn, oo haanta dibadda waxaa laga sameeyay Q25B ama Q345r.
Alaabada badankood, kaydinta muddada-dheer ee qaboojiyaha ayaa horseedaysa nabaad-guurka tayada, laakiin tusaale ahaan, miraha sida mooska iyo oranjiyada waxaa lagu keydin karaa 0 ℃ maalmood, -30 ℃ 1 toddobaad, iyo -50 ℃ 2 bilood.
