Surfacing of beverage vessels
AssigneeKo-Operatiewe Wijnbouers Vereniging Van Zuid-Afrika Beperkt
InventorsRonald D. Sanderson, Jurchens B. Badenhorst
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Abstract
The invention provides a method of coating a surface comprising the application of one or more layers to a substrate to be coated, one of the layers being a barrier layer containing stainless steel flakes. The invention also provides an article having a surface coated according to the method. The layers include, in addition to the barrier layer, one or more of an impregnant, an undercoat and a reinforcement layer. The layers are applied in the order of the impregnant, the undercoat, the reinforcement layer, and the barrier layer.
Claims12
A method of coating an internal surface of an article to form a coating thereon which is suitable for contact with a beverage, said method comprising the steps of:
- (i) applying at least one base layer to the article,
- (ii) thereafter applying a barrier layer over the base layer, said barrier layer comprising
- (a) a difunctional epoxy resin,
- (b) an epoxy novolak resin having a functionality greaten than 2,
- (c) a cycloaliphatic amine, and,
- (d) stainless steel flakes in an amount of between about 10% by weight and about 70% by weight, calculated on the total weight of the constituents (a), (b) and (c), and
- (iii) permitting the barrier layer to cure to form a solid coating.
A method of coating an internal surface of an article to form a coating thereon which is suitable for contact with a beverage, said method comprising the steps of:
- (i) applying at least one base layer to the article,
- (ii) thereafter, applying a barrier layer over the base layer, said barrier layer comprising
- (a) a difunctional epoxy resin,
- (b) an epoxy novolak resin having a functionality greater than 2,
- (c) a cycloaliphatic amine, and,
- (d) stainless steel flakes in an amount of between about 10% by weight and about 70% by weight, calculated on the total weight of the constituents (a), (b) and (c),
- (iii) permitting the barrier layer to cure to form a solid coating,
- (iv) applying a further layer comprising
- (a) a difunctional epoxy resin
- (b) an epoxy novolak resin having a functionality greater than 2, and
- (c) a cycloaliphatic amine, and
- (v) permitting the further layer to cure to form a solid coating.
An article having an internal coating thereon which is suitable for contact with a beverage, said coating comprising
- (i) at least one base layer
- (ii) a barrier layer provided on said base layer, said barrier layer comprising the cured product of
- (a) a difunctional epoxy resin
- (b) an epoxy novolak resin having a functionality greater than 2,
- (c) a cycloaliphatic amine, and
- (d) stainless steel flakes in an amount of between about 10% by weight and about 70% by weight, calculated on the weight of constituents (a), (b) and (c).
An article having a coating thereon, which is suitable for contact with a beverage, said coating comprising
- (i) at least one base layer
- (ii) a barrier layer provided on said base layer, said barrier layer comprising the cured product of
- (a) a difunctional epoxy resin,
- (b) an expoxy novolak resin having a functionality greater than 2,
- (c) a cycloaliphatic amine, and
- (d) stainless steel flakes in an amount of between about 10% by weight and about 70% by weight, calculated on the weight of constituents (a), (b) and (c), and
- (iii) on the barrier layer, a further layer comprising the cured product of
- (a) a difunctional epoxy resin,
- (b) an epoxy novolak resin having a functionality greater than 2, and
- (c) a cycloaliphatic amine.
Dependencies are inferred from the claim text.