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:
Apr. 25, 1978
Filed:
Aug. 10, 1976
Applicant:
Inventors:
Takao Yazaki, Yokkaichi, JA;
Kazuhide Hattori, Yokkaichi, JA;
Assignee:
Mitsubishi Petrochemical Co., Ltd., Tokyo, JA;
Primary Examiner:
Int. Cl.
CPC ...
B31F / ; B31F / ;
U.S. Cl.
CPC ...
156205 ; 156210 ; 156470 ; 15624421 ; 15624422 ; 15624423 ; 15624425 ;
Abstract
An improved corrugated carboard sheet and a method for producing corrugated cardboard sheets of the type which utilize paper at least for either of the core sheet or the liner sheets, including feeding and shaping the core sheet into the desired corrugated configuration by using corrugating rolls, applying as the adhesive a film of a molten thermoplastic polymer to a face of the corrugated sheet, and pressing a liner sheet against the face of the core sheet covered with adhesive.