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US 11,377,277 B2Granted
Removable closure and coating system
AssigneeSwimc LLC
InventorsBenoit Prouvost, Philippe Michel, Delphine Destal
Life of this patent
Estimating the term…
Abstract
The present invention is based upon a coating system that uses polycyclic polyester polymers and phenolic resins. The coating system comprises first and second coatings. The first coating preferably is derived from ingredients comprising a polycyclic polyester resin having first and second fused rings that share at least two atoms in common. The second coating preferably is derived from ingredients comprising a polycyclic polyester resin that may be different than the polyester of the first coating.
Claims23
A removable closure for a packaging article comprising a container, said closure comprising:
- (a) a substrate having an interior and an exterior surface;
- (b) a first, at least partially cured coating provided on at least a portion of the interior surface of the substrate, said first coating derived from ingredients comprising:
- (i) at least one first polycyclic polyester, wherein the polycyclic polyester comprises first and second fused rings that share at least one atom in common;
- and
- (ii) at least one first crosslinkable phenolic resin;
- and
- (c) a second at least partially cured coating provided directly or indirectly onto at least a portion of the first coating, said second coating derived from ingredients comprising:
- (i) at least one second polycyclic polyester;
- and
- (ii) at least one second crosslinkable phenolic resin comprising an etherified phenolic resin, an alkylated phenolic resin, or a combination thereof,
- wherein the first coating and the second coating are different based on at least (1) the first crosslinkable phenolic resin being different than the second crosslinkable phenolic resin, or both (1) and (2) the first polycyclic polyester being different than the second polycyclic polyester;
- wherein at least one of the first and second coating compositions is substantially free of polyvinyl chloride;
- and
- (d) a gasket applied directly onto at least a portion of the second coating in a manner effective to help the closure sealingly engage the container.
11 more elements
A method of making a removable closure for packaging article, comprising the steps of:
- (a) providing a first coating composition, said first coating composition being derived from ingredients comprising:
- (i) at least one first polycyclic polyester resin wherein the polycyclic polyester comprises first and second fused rings that share at least two atoms in common;
- and
- (ii) at least one first crosslinkable phenolic resin;
- and
- (b) providing a second coating composition, said second coating composition being derived from ingredients comprising:
- (i) at least one second polycyclic polyester;
- and
- (ii) at least one second crosslinkable phenolic resin comprising an etherified phenolic resin, an alkylated phenolic resin, or a combination thereof,
- wherein the first coating and the second coating are different based on at least (1) the first crosslinkable phenolic resin being different than the second crosslinkable phenolic resin, or both (1) and (2) the first polycyclic polyester being different than the second polycyclic polyester;
- wherein at least one of the first and second coating compositions is substantially free of polyvinyl chloride;
- and
- (c) providing a substrate;
- and
- (d) using the first and second coating compositions to form first and second coatings, respectively, on at least a portion of a surface of the substrate, wherein the first coating functions as a basecoat for the second coating and wherein the first coating and the second coating are different;
- and
- (e) optionally, at least partially curing the first and second coating compositions, and
- (f) applying a gasket directly onto at least a portion of the second coating.
15 more elements
A removable closure for a packaging article, said closure comprising:
- (a) a substrate having an interior and an exterior surface;
- (b) a first at least partially cured coating applied onto at least a portion of the interior surface of the substrate, said first coating derived from ingredients comprising:
- (i) at least one first polycyclic polyester, wherein the polycyclic polyester comprises first and second fused rings that share at least two atoms in common, and at least one bridge ring sharing three or more atoms in common with at least one of the first and second fused rings;
- and
- (ii) at least one first crosslinkable phenolic resin comprising at least one cresol resole phenolic resin and at least one non-cresol resole phenolic resin, wherein the cresol and the resole phenolic resins are crosslinkable with each other;
- and
- (c) a second at least partially cured coating applied directly or indirectly onto at least a portion of the first coating, said second coating derived from ingredients comprising:
- (i) at least one second polycyclic polyester wherein the polycyclic groups comprise first and second fused rings that share two atoms in common, and at least one bridge ring sharing three or more atoms in common with at least one of the first and second fused rings;
- and
- (ii) at least one second crosslinkable phenolic resin comprising at least one etherified phenolic resin and at least one non-etherified phenolic resin, wherein the etherified and the non-etherified phenolic resins are crosslinkable with each other;
- wherein the first and second coatings are substantially free of polyvinyl chloride, mobile and bound bisphenol A, mobile and bound aromatic glycidyl ether compounds, and mobile and bound oxirane-containing compounds;
- and
- (d) optionally a gasket applied directly or indirectly onto at least a portion of the second coating in a manner effective to help the closure sealingly engage the container.
10 more elements
Dependencies are inferred from the claim text.