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:
May. 25, 2004
Filed:
Oct. 25, 2001
Pierre Etienne Bindschedler, Obernai, FR;
Hervé Fellmann, Bischoffsheim, FR;
Rémi Perrin, Molsheim, FR;
Soprema (Societe Anonyme), Strasbourg, FR;
Abstract
A process and an installation for the production of a bituminous sealing sheet, comprises a strip impregnated and/or coated with a given bitumen and having a zone in the shape or a band or a portion of a band of a different bitumen from the first bitumen. A strip ( ) is produced which is impregnated and/or coated except for at least one zone in the form of a strip or a strip portion ( ) on at least one of its surfaces ( ), having a thinner thickness of bitumen ( ) or no application of bitumen ( ), to be used at the at least one strip or strip portion ( ), over a controlled thickness, a different bitumen ( ) from that initially applied and finally, after cooling and solidification of the eventually added bitumen ( ), processing the resulting sheet or sealed membrane ( ) 5 in the desired form, the processing operations being carried out by continuous movement of the strip ( ) in an installation ( ) or suitable coating line comprising at least two coating stations ( ).