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. 24, 1985
Filed:
Aug. 14, 1979
Applicant:
Inventors:
Lino Credali, Casalecchio di Reno, IT;
Paolo Parrini, Ferrara, IT;
Mario Milano, Ferrara, IT;
Domenico Lori, Ferrara, IT;
Assignee:
Montedison S.p.A., Milan, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B31F / ;
U.S. Cl.
CPC ...
156208 ; 156210 ; 156292 ; 1563084 ; 264286 ; 428182 ; 428186 ; 428195 ;
Abstract
Moisture-resistant packing cardboard of the corrugated type is prepared from flat paper sheets formed from 10% to 90% by weight of cellulose fibers and from 90% to 10% by weight of fibrils of at least one thermoplastic polymer and having a surface area greater than 1.0 m.sup.2 /gm, by heating the sheets under pressure on an undulated surface and coupling the resulting corrugated or undulated sheets with one or more flat sheets to which the corrugated sheet is adhered through the tips of the corrugations or undulations.