mÉtodo para produzir uma pelÍcula vedante para uso em gaxetas, pelÍcula vedante para uso em uma gaxeta, mÉtodo para fabricar gaxeta, e, gaxeta.

摘要

The invention is concerned with gasket sealing foils having a sealing layer with enhanced properties which is based upon chemically exfoliated vermiculite. The method of producing a sealing foil for gaskets is described. The method comprises the steps of:
(a) the application of a wet sealing foil material to a forming sheet to form a layer;
(b) partially drying the said wet sealing foil layer on the forming sheet;
(c) removing the said layer from the forming sheet to form a core free gasket sealing foil; and
(d) forming, preferably cutting, the layer into at least one suitable shape for use in the formation of a gasket. The sealing foil comprises a resilient material, which comprises a CEV component in a proportion of at least 25% w/w of the sealing foil, the CEV component being at least partially derived from dry CEV. The sealing foil layer may be combined with a gasket support layer prior to or after the cutting step.