Patent ID: 11920064
Assignee: DIAM BOUCHAGE
Field: Machine tools (Mechanical engineering)
Classification: CPC C  B | IPC B  C

Claim 0:
1. A method for manufacturing stoppers intended for bottling still wines, the method comprising:
making cork strips and lateral cork strips from cork such that lenticels possibly present in the cork strips extend parallel to the thickness of the cork strips while those in the lateral cork strips extend perpendicular to the thickness of the lateral cork strips, the cork having been previously debarked from a tree then boiled;
making at least one plurality of cork strips by joining cork strips via a polyurethane binder, by spraying a wax emulsion on the cork strips and drying the wax emulsion to eliminate water therefrom, applying a polyurethane binder to the cork strips such that the cork strips are disposed on top of each other until reaching a predetermined thickness, and cutting the cork strips normal to their surface to obtain a plurality of cork strips;
making at least one parallelepiped by joining at least one lateral cork strip on each side of the plurality of cork strips via a polyurethane binder so that the side of each cork strip of the plurality of cork strips is covered by at least one lateral cork strip, the polyurethane binder being polymerized by heating and under pressure;
forming at least one stopper from at least one polymerized parallelepiped such that at least one of the lateral cork strips is located at an end of the at least one stopper.