Nippon Paper Industries Co., Ltd.

Yokogawa Electric Corporation

Hidenobu Todoroki

Takashi Sasaki

Yuji Abe

Katsumasa Ono

Akira Sakamoto

Hirofumi Sano

Nobuo Takeuchi

A method includes steps of: expressing changes of velocity components of a paper material at an exit of a slice lip by using a mathematical model, wherein the changes of velocity components are caused by manipulating an edge flow adjustment means (or a side bleed adjustment means) of a headbox when supplying the paper material on a wire; without changing a velocity component of a flow of the paper material in the mathematical model, setting the mathematical model based on an assumption in which a velocity component orthogonally crossing a flow direction of the paper material is proportionally changed by changes of an edge flow (or a side bleed) of a certain response width from the exit of the slice lip; and conducting a forecasting calculation of changes of a fiber orientation profile in a cross direction by using the mathematical model.

Simulation method, fiber orientation control method and fiber orientation control apparatus

Methods for producing cast-coated papers showing a reduced level of curling and reduced curling or wavy deformation caused by moisture absorption or other reasons as well as showing a high surface quality in the cast-coated surface. The steps for producing cast-coated papers include applying a coating color based on a pigment and an adhesive on one side of a base paper, and pressing/drying the coated layer in the wet state against a casting drum mirror surface, where moisture is added to the coated paper by passing it through conditioned air at a high temperature and a high humidity (for 20 seconds or more) after pressing/drying the coated layer against a casting drum.

Processes and apparatus for producing cast coated papers

Method of determining the orientation of fibers on the surface of paper

Growing community of inventors

Kita-ku, Japan

Hidenobu Todoroki