Device to be placed on the hull of a boat, in particular, a...

Details Device to be placed on the hull of a boat, in particular, a... Device to be placed on the hull of a boat, in particular, a...

G - Physics

01

N

G01N 31/22 (2006.01) B63B 59/00 (2006.01)

Patent

CA 2199254

Device (1) comprising a transparent sheet (2) coated, on one face, with an adhesive (4) and a product (6) reacting with an aqueous solution and/or an acid-reactant product (7) with a colour change area for a pH ranging from approximately 3 to 6. The adhesive ensures that the sheet (2) is kept watertight and in contact with the hull (10) for a minimum period of three months. The sheet (2) includes, on the same face and on the face which does not contact the hull (10), an opaque adhesive sheet (3) or a sheet which is made opaque and fully overlays it, and is capable of being manually removed. The device (1) is for assessing, in particular, the porosity of the outer sealing coat of a boat hull made of glass fiber-reinforced polyester resin and/or for detecting the effects of osmosis on the hull.

Ce dispositif (1) comprend une feuille transparente (2), munie, sur une face, d'un adhésif (4) et un produit (6) réagissant à une solution aqueuse et/ou d'un produit acido-réactif (7) ayant une zone de virage située entre des valeurs de pH allant de 3 à 6 environ, cet adhésif étant apte à maintenir la feuille (2) plaquée contre la coque (10) de manière étanche à l'eau et pendant une durée minimum de trois mois, cette feuille (2) comportant, sur cette même face, et sur sa face non destinée à venir au contact de la coque (10), une feuille adhésive (3) opaque ou rendue opaque qui la recouvre intégralement, pouvant être retirée par décollement manuel. Ce dispositif (1) est notamment destiné à l'évaluation de la porosité de la couche extérieure d'étanchéité d'une coque de bateau fabriquée en résine polyester armée de fibres de verre et/ou à la détection de l'osmose subie par cette coque.

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