Ishikawajima-harima Jukogyo Kabushiki Kaisha

Seishi Gijutsu Kenkyu Kumiai

Masahiro Yakabe

Satoshi Suzuki

Koichi Ishibashi

Sadao Degawa

Koji Sakai

Ikuo Nakashima

Shigeki Murayama

Masami Yuasa

Masaji Shibamoto

Kazumi Abe

An apparatus for controlling the degree of fiber variations in paper sheet has a formation meter for receiving an image of transmitted light on one side of an area of paper from a light source located on the other side of the area of paper, an image processing computing element for introducing the image from said formation meter for image processing and a fuzzy control unit for calculating and outputting optimum J/W ratio, optimum foil angle, and optimum deflector pushing degree and angle on the basis of results of image processing from said image processing computing element.

Apparatus for controlling the degree of paper fiber variation

A formation control method and apparatus in which an image is emitted from a light source and transmitted through a predetermined area of paper an captured by a camera to be displayed as transmitted light image on a display of an image processing computing element, the transmitted light image displayed on the display being image-analyzed to obtain formation factor for quantification of the formation, J/W ratio and the like being optimized by fuzzy control using membership functions based on said formation factor so as to improve the formation.

Method for measuring and controlling fiber variations in paper sheet

A plurality of stages of parallel twisted plates extend in a slurry passage adjacent to a slice outlet of a head box in the direction of papermaking slurry flow therethrough and are spaced apart from each other by a predetermined distance. The twisted plates directly cause the slurry flowing through the head box to swirl. Adjacent vortex flows of the slurry interfere with each other, resulting in the violent agitation of the slurry.

Headbox for paper machine with parallel twisted plates

Growing community of inventors

Narita, Japan

Masahiro Yakabe