Mfundo yogwirira ntchito yafield foam ma CD dongosolo:

Pambuyo pazigawo ziwiri zamadzimadzi zimasakanizidwa ndi zida, zimachita kupanga zinthu zopanda thovu (HCFC / CFC) polyurethane thovu la Freon.Zimangotenga masekondi pang'ono kuchokera ku thovu ndi kukulitsa mpaka kukhazikitsa ndi kuumitsa.Mitundu yosiyanasiyana ya zida zopangira zimatulutsa thovu zokhala ndi makulidwe osiyanasiyana, kulimba komanso kutsitsa.Kuchuluka kwa thovu kuchokera ku 6kg/m3 kufika ku 26kg/m3, kukupatsirani mayankho a ntchito zosiyanasiyana.

Chiyambi cha zida zonyamula thovu zonyamula m'manja:

Zida zonse zimaphimba dera la 2 lalikulu mamita, ndipo "makina opusa" akugwiritsidwa ntchito mwachidwi.Mukafuna kugwira ntchito, mumangofunika kukoka choyambitsa pang'onopang'ono kuti mupange thovu lofunikira.Palibe phokoso lodziwikiratu, palibe fungo, palibe kuipitsa, komanso zinyalala zikagwiritsidwa ntchito.Nthawi yolongedza ndi yaifupi, ndipo kupanga thovu ndikosavuta kuwongolera komanso kotetezeka.