an apparatus for the continuous production of foamed plastics is described . the apparatus includes i ) a continuous conveyor belt , and ii ) a transversely reciprocating applicator device located over the belt for applying a foam - forming reaction mixture . the applicator device includes a mix head and a detachably mounted magazine plate having several openings thereon . each opening has a casting tube connected thereto . each casting tube has discharge holes on its underside . the plate is adjustable in such a way that the casting tubes can be connected successively to the outlet of the mixhead .