| 摘要 |
PROBLEM TO BE SOLVED: To provide a paper having sufficiently low density and good printability without using particular raw materials and chemicals and provide a method for producing the paper. SOLUTION: The paper is composed of two or more layers comprising at least one low-density paper layer and one high-density paper layer. The paper has a density of <0.5 g/cm<SP>3</SP>and contains at least one low-density layer having fiber axis direction deviated from the paper surface by 10-80°on an average, at least one surface layer is a high-density layer and the surface has a smoothness of≥20 sec determined by an Oken-type smoothness tester. The density of the paper is preferably 0.3-0.45 g/cm<SP>3</SP>, and the low density layer may contain waste paper as a component. The low-density paper can be produced by using a paper substrate formed by a wet paper-making process and depositing fibers on the substrate by electrostatic force to form the low-density layer. COPYRIGHT: (C)2005,JPO&NCIPI
|
