Drink cup lid
A container includes a cup and a lid. The lid is adapted to mate with a brim included in the cup to close a top aperture opening into an interior liquid-storage region formed in the cup.
1. A lid for a cup, the lid comprising
a ring-shaped brim mount adapted to couple to a brim included in a cup,
a closure coupled to the ring-shaped brim mount, and
a deformable dome coupled to the closure, the deformable dome arranged to move from a first arrangement in which the deformable dome extends upwardly away from the closure to a second arrangement in which the deformable dome is arranged to extend downwardly away from the closure in response to a downward deformation force being applied to the deformable dome,
wherein the lid comprises a polypropylene copolymer and the deformable dome has a first transparency in the first arrangement and a second transparency in the second arrangement and the second transparency is different than the first transparency,
wherein the lid comprises at least 49% by weight the polypropylene copolymer,
wherein the first transparency is defined at least by a clarity as measured using ASTM D 1746 and a haze as measured using ASTM D 1003 procedure B and a ratio of the clarity to the haze is greater than 1:1.
2. The lid of claim 1 , wherein the first transparency is defined at least by having a clarity greater than about 50% as measured using ASTM D 1746 and having a haze less than about 40% as measured using ASTM D 1003 procedure B.
3. The lid of claim 2 , wherein the lid comprises at least 99% by weight polypropylene copolymer.
4. The lid of claim 3 , wherein the closure has a thickness of between about five and about fifteen thousandths of an inch.
5. The lid of claim 4 , wherein the lid comprises 100% by weight the polypropylene copolymer.
6. The lid of claim 1 , wherein the first transparency is defined at least by having a clarity greater than about 70% as measured using ASTM D 1746 and a haze less than about 30% as measured using ASTM D 1003 procedure B.
7. The lid of claim 1 , wherein the polypropylene copolymer is a polypropylene random copolymer.
8. The lid of claim 1 , wherein the polypropylene copolymer is a polypropylene impact copolymer.
9. The lid of claim 1 , wherein the first transparency is defined at least by having a clarity greater than about 70% as measured using ASTM D 1746 and a haze less than about 30% as measured using ASTM D 1003 procedure B, the lid comprises at least 99% by weight polypropylene copolymer, the closure has a thickness of between about five and about fifteen thousandths of an inch, and wherein the lid further comprises an additive.
10. A lid for a cup, the lid comprising
a ring-shaped brim mount adapted to couple to a brim included in a cup,
a closure coupled to the ring-shaped brim mount, and
a deformable dome coupled to the closure, the deformable dome arranged to move from a first arrangement in which the deformable dome extends upwardly away from the closure to a second arrangement in which the deformable dome is arranged to extend downwardly away from the closure in response to a downward deformation force being applied to the deformable dome,
wherein the lid comprises a polypropylene homopolymer and the deformable dome has a first transparency in the first arrangement and a second transparency in the second arrangement and the second transparency is different than the first transparency,
wherein the lid comprises at least 49% by weight the polypropylene homopolymer,
wherein the first transparency is defined at least by having a clarity greater than about 50% as measured using ASTM D 1746.
11. The lid of claim 10 , wherein the first transparency is defined at least by having a haze less than about 40% as measured using ASTM D 1003 procedure B.
12. The lid of claim 11 , wherein the lid comprises at least 99% by weight polypropylene homopolymer.
13. The lid of claim 12 , wherein the closure has a thickness of between about five and about fifteen thousandths of an inch.
14. The lid of claim 13 , wherein the lid comprises 100% by weight the polypropylene homopolymer.
15. The lid of claim 10 , wherein the first transparency is defined at least by having a clarity greater than about 70% as measured using ASTM D 1746 and a haze less than about 30% as measured using ASTM D 1003 procedure B.
16. The lid of claim 10 , wherein the first transparency is defined at least by having a clarity greater than about 70% as measured using ASTM D 1746 and a haze less than about 30% as measured using ASTM D 1003 procedure B, the lid comprises at least 99% by weight polypropylene homopolymer, the closure has a thickness of between about five and about fifteen thousandths of an inch, and wherein the lid further comprises an additive.
17. The lid of claim 10 , wherein the lid further comprises a polypropylene impact copolymer.
18. The lid of claim 10 , wherein the deformable dome is arranged to move from the second arrangement to a third arrangement in which the deformable dome is arranged to extend upwardly away from the closure in response to an upward deformation force, the deformable dome has a third transparency in the third arrangement, and wherein the third transparency is different than the second transparency.
19. The lid of claim 10 , wherein the first transparency is defined at least by the clarity as measured using ASTM D 1746 and a haze as measured using ASTM D 1003 procedure B and a ratio of the clarity to the haze is greater than 1:1.