Sealant Layer Assembly

A sealant layer assembly for allowing a sealant layer to be applied on an inner cavity of a tire outside of tire production plants, said assembly comprising:

• a sealant layer configured upon application with a first surface on a surface of an inner liner layer facing the inner cavity of a tire, wherein the sealant layer comprises a rubber layer having a viscosity operable to instantaneously seal around an object that penetrated a tread or closes a hole left by the object;
• a net layer arranged on said first surface of the sealant layer with the net layer and configured to be, in use, interposed between the sealant layer and the surface of the inner liner layer facing the inner cavity of a tire;
• and
• a non-stick protective layer arranged on said net layer;
• wherein said net layer comprises meshes, each mesh having an area ranging from 0.25 mm2 to 25 mm2

A method of producing a sealant layer assembly for allowing application of a sealant layer to a surface of an inner liner layer facing the inner cavity of a tire, the method comprising:

• a first coupling step of coupling a net layer and a non-stick protective layer to one another, wherein the net layer comprises meshes, each having an area ranging from 0.25 mm2 to 25 mm2 ;
• and
• a second coupling step of applying a first surface of a sealant layer to the net layer already coupled to the non-stick protective layer, wherein the net layer is interposed between the sealant layer and the non-stick protective layer,
• wherein the sealant layer comprises a rubber layer having a viscosity operable to instantaneously seal around an object that penetrated a tread or closes a hole left by the object, and
• wherein said second coupling step is carried out at a temperature ranging from 60 to 110° C.