FIELD: chemistry.
SUBSTANCE: invention can be used in production of tissue paper. Surface-treated natural calcium carbonate is used as filler in tissue paper products, where said calcium carbonate is a product of reaction of natural calcium carbonate with an acid and carbon dioxide. The carbon dioxide is formed in situ by treatment with the acid and/or is fed from an external source. The surface-treated natural calcium carbonate is obtained as an aqueous suspension having pH higher than 6.0, measured at 20°C.
EFFECT: invention improves softness of tissue paper products such as facial tissue, toilet paper, ornamental paper, towels, napkins or tissue paper cloths.
47 cl, 1 dwg, 5 tbl, 3 ex
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