Patent ID: 8460510

Claim:
A method of making a tissue paper product having a softness of less than 6.0 TSA, said method comprising the steps of: (i) forming a furnish comprising tissue paper making fibers and surface-reacted calcium carbonate or an aqueous suspension comprising surface-reacted calcium carbonate having a pH of greater than 6.0 measured at 20° C., wherein the surface-reacted calcium carbonate is formed by treating natural calcium carbonate with carbon dioxide and one or more acids, wherein the carbon dioxide is formed in situ by the acid treatment and/or is supplied from an external source; (ii) forming a tissue paper web from the furnish from step (i); (iii) forming a tissue paper from the tissue paper web from step (ii); and (iv) manufacturing a tissue paper product from the tissue paper from step (iii), wherein the tissue paper product comprises the surface-reacted calcium carbonate and wherein the tissue paper product has a softness of less than 6.0 TSA.