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. 25, 2025
Filed:
Jun. 12, 2020
Compagnie Generale Des Etablissements Michelin, Clermont-Ferrand, FR;
Frederic Pialot, Clermont-Ferrand, FR;
Jose Merino Lopez, Clermont-Ferrand, FR;
COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, Clermont-Ferrand, FR;
Abstract
A method for manufacturing a composite airtight layer () used in the composition of a tire () comprises: a film () made of thermoplastic material is heated such that the film is able to plastically deform; the film is deformed () with the aid of corrugating means, the thickness of the film () being in a range from 0.01 to 0.2 mm, and the film having corrugations with a pitch and amplitude chosen in a range from 0.1 to 10 mm so as to give the film a given elongation capacity; the film is cooled such that the corrugated film is no longer able to be plastically deformed; and the corrugated film is coated in a matrix () of elastomer material, so as to form a composite airtight layer ().