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Application filed by Пиэтек-Кортисаш, С.А., Иституто Сюперьюр ТекникоfiledCriticalПиэтек-Кортисаш, С.А.
Publication of UA96608C2publicationCriticalpatent/UA96608C2/en
Chemical And Physical Treatments For Wood And The Like
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Dry Formation Of Fiberboard And The Like
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Abstract
This invention concerns stoppers made from composite material for sparkling wines consisting of two types of cork agglomerate which are closely bonded and produced from two ranges of granulates of different granulometry, where the joining surface between the two agglomerates is irregular due to their interpenetration. The invention also concerns the production process of these stoppers by individual molding (piece by piece), whereby the simultaneous feeding of the two types of granulate and the respective additives is done and the mould is closed by compression and then heated for a time for polymerization. The granulates used are normally treated with a reactive agglomerate consisting of, for example, quasi-prepolymer based on TDI or quasi-prepolymer based on MDI base. After de-molding, the unfinished stopper is stabilized, and later machined to the final dimensions.
UAA200903704A2006-10-172007-07-26Stopper made from composite corkmaterial for sparkling wines and method of its manufacturing
UA96608C2
(en)