Laid - papers with a ribbed appearance produced by a mould or dandy roll which has wires parallel to each other and not woven.

Lamination - the combination of two or more materials using a bonding agent.

Layboy - stacking device on a paper cutter.

Lignin - substance in wood which binds its fibres together and reinforces its structure. Lignin is removed in the manufacture of chemical pulp.

Loading or Filler - fine white pigment in the form of powder or slurry used to improve smoothness, opacity, brightness and dimensional stability of paper and board.