Patent ID: 7387703

Claim:
A method for manufacturing a surface sized release paper, the method comprising: calendering a body layer in a calender that includes at least one nip formed between a hard-faced roll and a soft counter surface to provide a calendered release paper, the calendered release paper being formed of fibre raw material and having a moisture level of at least about 13 wt. % to provide a grammage of the calendered release paper of from about 50 to about 90 g/m 2 ; surface sizing the calendered release paper with a surface sizing treatment agent to provide the surface sized release paper, the quantity of the surface sizing treatment agent being less than about 0.7 g/m 2 as dry solids to form the surface sized release paper, the calendered release paper having pores which will not absorb the surface sizing treatment agent when the agent is applied thereto as much as a release paper from the same body layer which has not been calendered with a moisture level of at least 13 weight percent and which has been surface sized with less than about 0.7 g/m 2 surface treating agent; and applying a release composition to the sized surface of the release paper to provide a release agent surface, the release agent surface not absorbing an adhesive when an adhesive is applied thereto as much as a release paper from the same body layer which has not been calendered with a moisture level of at least 13 weight percent, which has been surface sized with less than about 0.7 g/m 2 surface treating agent and which has not been coated with same amount of a release agent in the same way.