Single facer

A single facer comprising:

• a main frame;
• a paste application roll rotatably supported on said main frame, said paste application roll having a roll axis extending in a transverse direction;
• a pressure roll rotatably supported on said main frame, said pressure roll having a roll axis which is parallel to said transverse direction;
• a movable frame movable in said transverse direction between a fixed position on said main frame for making a single-faced corrugated sheet and a position off of said main frame;
• a lower corrugated roll rotatably supported on said movable frame, said lower corrugated roll having a roll axis parallel to said transverse direction;
• an upper corrugated roll rotatably mounted on support means pivotally mounted on said movable frame, said upper corrugated roll having a roll axis parallel to said transverse direction,
• means on said main frame for supporting said movable frame in said fixed position on said main frame;
• and
• transfer means for moving said movable frame in said transverse direction between a position vertically above said fixed position at which said movable frame is supported by said main frame and said position off of said main frame at which said movable frame is not supported by said main frame for replacing said movable frame with another movable frame having corrugated rolls with corrugations of a different height and pitch, said transfer means including means on one of said main frame and said movable frame for moving said movable frame vertically between said position vertically above said fixed position and said fixed position on said main frame for making single-faced corrugated sheet.