Repair of composite materials
AssigneeGurit (UK) Ltd.
InventorsDaniel Thomas Jones, Andrew James Passey, Iain James Cranwell
Life of this patent
Estimating the term…
Abstract
A prepreg comprising a fibrous reinforcement layer at least partially impregnated with a matrix resin having a first viscosity, a coating of a wet resin having a second viscosity on a first side of the fibrous reinforcement layer, the first viscosity being higher than the second viscosity, both the matrix resin and the wet resin being curable by ultraviolet radiation, a first removable flexible film which acts as a barrier to ultraviolet radiation on a second side of the fibrous reinforcement layer, and optionally a second removable protective flexible film covering the coating of wet resin.
Claims24
A process for bonding a cured prepreg to a surface of a substrate, the process comprising the steps of:
- (i) providing a prepreg comprising a fibrous reinforcement layer at least partially impregnated with a matrix resin having a first viscosity, a first side of the fibrous reinforcement layer carrying a coating of a wet resin having a second viscosity, the first viscosity being higher than the second viscosity, both the matrix resin and the wet resin being curable by ultraviolet radiation;
- (ii) applying the prepreg to the substrate by urging the coating against the substrate surface;
- and
- (iii) curing the matrix resin and the wet resin at substantially the same time using ultraviolet radiation.
Dependencies are inferred from the claim text.