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:
Nov. 14, 2006
Filed:
Jan. 21, 2004
Rolf Lasson, Lund, SE;
Rolf Lasson, Lund, SE;
Tetra Laval Holdings & Finance S.A., Pully, CH;
Abstract
The invention relates to a method of producing packaging material in the form of a continuous laminate web () and being of the type which includes a core layer () of paper or cardboard whose one face displays a layer () which is disposed outside the core layer () and includes first an aluminium foil () and secondly a plastic coating () disposed outside the aluminium foil layer. Throughout its entire surface, the core layer () is covered with the above-mentioned layer (), while along selected portions it extends out over the edges of the core layer (). The above-mentioned layer () is formed in that the aluminium foil () and at least one thermoplastic material () are laminated to one another by being brought together between two rollers () of which the one roller consists of a cooled roller and the other roller consists of a roller which is heated to a temperature exceeding the melting temperature of the thermoplastic. The above-mentioned formed layer () is brought together with the core layer () between two cooled rollers () and co-laminated with the adhesive or binder layer of thermoplastic.