The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 04, 2001
Filed:
May. 05, 1998
Hiroshi Ishibuchi, Hiroshima-ken, JP;
Kazukiyo Kohno, Hiroshima-ken, JP;
Kuniaki Wakusawa, Hiroshima-ken, JP;
Yukuharu Seki, Hiroshima-ken, JP;
Makoto Ando, Hiroshima-ken, JP;
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Abstract
The present invention relates to a method capable of certainly correcting a phase shift between a plurality of core paper layers. In the method according to this invention, the next phase shift quantity &dgr;′,is estimated on the basis of a previous measured phase shift value &dgr;,and the present measured phase shift value &dgr;,and a single-faced corrugated fiberboard sheet tension changing quantity &Dgr;T,for correction of the next phase shift quantity &dgr;′,estimated is calculated to adjust the tension to the single-faced corrugated fiberboard sheet on the basis of the calculated tension changing quantity &Dgr;T,. This invention is effectively applicable when, for example, manufacturing a two-layer core single-faced corrugated fiberboard sheet or the like.