METHOD OF LOCAL INFLUENCE ON PERMEABILITY OF DRY BILLET RESIN Russian patent published in 2021 - IPC B29C70/44 B32B5/26 

FIELD: chemical industry.

SUBSTANCE: invention relates to a method of local influence on the resin permeability of a dry billet having one or more reinforcing layers. The technical result is achieved by a method that involves applying a selectively permeable shell to one of the reinforcing layers of the dry billet. Moreover, the selectively permeable shell has a shell pattern, the spatial density of which is selected depending on the resin permeability of at least part of the dry billet to achieve the required volume of resin infusion, and is made to dissolve or melt in the resin, giving the billet, at least locally, impact viscosity after resin infusion and curing of the dry billet. The resin is infused into the dry billet and the resin is directed through the selectively permeable shell so that the resin permeates the dry billet.

EFFECT: improvement in the impregnation of billets with complex geometries.

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