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US 12,472,714 B2Granted
Pressure dome cap
AssigneeOrigin Materials Operating, Inc.
InventorsJay Clarke Hanan, Rachel Hess
Life of this patent
Estimating the term…
Abstract
Thermoformed polyester resin closures for closing containers, the polyester resins including polyethylene terephthalate (“PET”), polyethylene furandicarboxylate (“PEF”), or a copolymer including PET and PEF, are provided herein. Methods of making the thermoformed closures are further provided. Methods of sterilizing the thermoformed closures are further provided.
Claims21
A polyester resin closure that comprises:
- (a) a plug seal configured to seal against an inner surface of a finish of a container when the polyester resin closure is mounted onto the finish of the container, the plug seal including,
- (i) an annular wall configured to seat against a top surface of a rim of the finish,
- (ii) an outer cylindrical wall extending downward from a first edge of the annular wall, wherein the outer cylindrical wall comprises internal threads or a lip configured to engage with the finish,
- (iii) an inner cylindrical wall that extends downwardly from a second edge of the annular wall;
- and
- (b) a lower wall that extends from the inner cylindrical wall, the lower wall extending across a diameter of the inner cylindrical wall, the lower wall having a concave upward shape that is configured to change shape in response to pressurized contents within an interior of the container;
- and
- wherein the polyester resin comprises polyethylene terephthalate, polyethylene furandicarboxylate, or a copolymer of polyethylene terephthalate and polyethylene furandicarboxylate.
5 more elements
A polyester resin closure that comprises:
- (a) a plug seal configured to seal against an inner surface of a finish of a container when the polyester resin closure is mounted onto the finish of the container, the plug seal including,
- (i) an annular wall configured to seat against a top surface of a rim of the finish,
- (ii) an outer cylindrical wall extending downward from a first edge of the annular wall, wherein the outer cylindrical wall comprises internal threads or a lip configured to engage with the finish,
- (iii) an inner cylindrical wall that extends downwardly from a second edge of the annular wall;
- and
- (b) a lower wall extending across a bottom of the inner cylindrical wall, the lower wall having a concave upward shape that is configured to change shape in response to pressurized contents within an interior of the container;
- and
- wherein the polyester resin comprises polyethylene terephthalate, polyethylene furandicarboxylate, or a copolymer of polyethylene terephthalate and polyethylene furandicarboxylate,
- wherein the inner cylindrical wall comprises a radial surface that is dimensioned for an interference fit with a corresponding inwardly facing surface of the rim of finish for sealing,
- wherein the interference fit is configured to lock the polyester resin closure to the finish, and
- wherein an amount of interference in the interference fit is from 0.02 mm to 0.2 mm.
8 more elements
A polyester resin closure that comprises:
- (a) a plug seal configured to seal against an inner surface of a finish of a container when the polyester resin closure is mounted onto the finish of the container, the plug seal including,
- (i) an annular wall configured to seat against a top surface of a rim of the finish,
- (ii) an outer cylindrical wall extending downward from a first edge of the annular wall, wherein the outer cylindrical wall comprises internal threads or a lip configured to engage with the finish,
- (iii) an inner cylindrical wall that extends downwardly from a second edge of the annular wall;
- and
- (b) a lower wall extending across a bottom of the inner cylindrical wall;
- and
- wherein the polyester resin comprises polyethylene terephthalate, polyethylene furandicarboxylate, or a copolymer of polyethylene terephthalate and polyethylene furandicarboxylate,
- wherein the inner cylindrical wall comprises a radial surface that is dimensioned for an interference fit with a corresponding inwardly facing surface of the rim of finish for sealing,
- wherein the interference fit is configured to lock the polyester resin closure to the finish, and
- wherein an amount of interference in the interference fit is from 0.02 mm to 0.2 mm.
8 more elements
Dependencies are inferred from the claim text.