To provide paper for a decorative laminate having processing suitability substitutable for conventional vinyl chloride films, particularly suitable even for processing including heat treatment.

A sheet is obtained by impregnating a paper substrate including wood pulp having a beating degree of 50-300 ml in terms of Canadian standard freeness according to JIS P 8121-1995, as a main constituent, with a sulfamic acid salt or a guanidine salt. In the sheet, the tensile breaking elongation during heating (at a temperature of 100°C, for a preheating time of 1 min) of the sheet according to JIS P 8113:1998 is ≥5% in the transverse direction.