Fluid delivery system for interfolding apparatus

An apparatus for forming stacks of interfolded sheets from a plurality of sheets, the apparatus comprising:

• first and second folding rolls being opposed to one another to form a nip, the first and second folding rolls being configured to receive the plurality of sheets, move the plurality of sheets through the nip, and fold the plurality of sheets into a stack of interfolded sheets downstream of the nip;
• a first packing finger associated with the first folding roll;
• a second packing finger associated with the second folding roll,
• the first packing finger being adapted and configured to move between a retracted position and an extended position relative to the first folding roll,
• the second packing finger being adapted and configured to move between a retracted position and an extended position relative to the second folding roll, and
• the first and second packing fingers being adapted and configured to alternate movement relative to each other between the retracted position and the extended position to engage the plurality of sheets and form the stack of interfolded sheets;
• and
• a liquid delivery system adapted and configured to deliver a liquid to a sheet of the plurality of sheets when the sheet is on one of the folding rolls and before the sheet is moved to the stack.