Extrusion foaming imakhala ndi luso lapamwamba la kupanga, yunifolomu ndi khalidwe lokhazikika la mankhwala, kutayika kochepa, komanso kutha kupanga zinthu zautali wopanda malire. Zida ndi zodula, ndalama zoyamba zimakhala zazikulu, kukonza ndondomekoyi ndizovuta, ndipo sikoyenera kupanga{1}}magulu ang'onoang'ono.
Kutulutsa thovu kozolowereka kumakhala ndi kusinthasintha kwakukulu, ndipo kumatha kupanga zinthu zovuta; Zida ndi zosavuta komanso mtengo wa nkhungu ndi wotsika. Ndioyenera kupanga zonenepa kwambiri kapena zopangidwa ndimitundu yayikulu-zosiyanasiyana.