| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide newsprint paper that prevents properties such as tensile strength, bulkiness, paper thickness and stiffness from being degraded even when formed of a high blending ratio of recycled pulp. <P>SOLUTION: There is provided newsprint paper containing recycled pulp of 80 mass% or more in its pulp material, in which a paper surface pH is 6.0 to 7.0, and an ash content measured in conformity to JIS P 8251 is 5 to 10 mass%, and a content ratio of calcium is 2 mass% or less. <P>COPYRIGHT: (C)2012,JPO&INPIT |
