| abstract |
A nature wrapping paper for heavy duty paper sack obtained by incorporating a compound denaturated by an α , β -unsaturated carboxylic acid and an aluminum sulfate to a nature pulp obtained by cooking a ligno-cellulose material and having a Kappa number of 20 to 80, and by machining. The compound to be denaturated by an α , β -unsaturated carboxylic acid is at least one selected from the group consisting of rosin, rosin ester and acrylic resin. |