Sanitary thin paper roll
AssigneeDaio Paper Corporation
InventorTakashi Matsumura
Life of this patent
Estimating the term…
Abstract
[Problem] To reduce roll paper curl of a sanitary thin paper roll [Means for Solving Problem] A sanitary thin paper roll in the present invention comprising two or more ply sheets for constituting a roll wherein a basis weight of a sanitary thin paper sheet on an outermost face of the roll is smaller than a basis weight of a sanitary thin paper sheet on an innermost face of the roll, and a density of the sanitary thin paper sheet on the outermost face of the roll is larger than a density of the sanitary thin paper sheet on the innermost face of the roll
Claims8
A sanitary thin paper roll having two or more stacked sanitary thin paper sheets wound around a tubular core of practically the same width as the sheets, wherein
- in the sheets, a basis weight of a sanitary thin paper sheet on an outermost face of the roll is smaller than a basis weight of a sanitary thin paper sheet on an innermost face of the roll, and a density of the sanitary thin paper sheet on the outermost face of the roll is larger than a density of the sanitary thin paper sheet on the innermost face of the roll,
- both the basis weight of the sanitary thin paper sheet on the outermost face of the roll and the basis weight of the sanitary thin paper sheet on the innermost face of the roll fall within a range of 10 to 50 g/m2,
- both the density of the sanitary thin paper sheet on the outermost face of the roll and the density of the sanitary thin paper sheet on the innermost face of the roll fall within a range of 100 to 250 kg/m3, and
- a value D of (the density of the sanitary thin paper sheet on the innermost face of the roll)/(the density of the sanitary thin paper sheet on the outermost face of the roll) falls within a range 0.6≦D≦1.0.
Dependencies are inferred from the claim text.