Low friction machine for manufacturing corrugated board

A machine for applying pressure to a moving substrate traveling adjacent to a heated surface, the machine comprising:

• a row of pressure applicators, wherein each pressure applicator includes
• a foot operative for applying pressure to the moving substrate, wherein the foot includes a conduit through the foot having a first end and a second end;
• an actuator operatively coupled to the foot and configured for moving the foot between a raised position and lowered position, wherein the lowered position is proximate to the moving substrate;
• an air supply operatively connected to the first end of the conduit and operative for supplying air to the conduit through the foot;
• and
• a check valve located within the conduit and operative for regulating airflow through the foot, wherein the check valve is opened when the foot is in the lowered position and closed when the foot is in the raised position.

A machine for applying pressure to a corrugated board traveling in a machine direction adjacent to a heated surface, the machine comprising:

• a first plurality of pressure applicators along the machine direction;
• a second plurality of pressure applicators along a cross machine direction that is transverse to the machine direction, wherein, each of the pressure applicators include
• a foot operative for applying pressure to the corrugated board, wherein the foot includes a conduit through the foot having a first end and a second end;
• an actuator operatively coupled to the foot and configured for moving the foot between a raised position and a lowered position, wherein the lowered position is proximate to the corrugated board;
• an air supply operatively connected to the first end of the conduit and operative for supplying air to the conduit through the foot;
• and
• a check valve located within the conduit and operative for regulating airflow through the foot, wherein the check valve is opened when the foot is in the lowered position and closed when the foot is in the raised position.