Package

1. A package comprising:

a package body formed by mating foldable laminate film materials and sealing peripheral edge portions of the mated film materials so as to form a content accommodation compartment inside the sealed peripheral edge portions, said sealed peripheral edge portions being subjected to an easily peel-off treatment so that the sealed peripheral edge portions are separated and peeled off from each other when the package is opened;

a seal opening starting portion formed outside of one of the sealed peripheral edge portions so that the film materials are separated from each other at the seal opening starting portion; and

at least one projection provided on an inner surface of the film materials forming the seal opening starting portion;

wherein said at least one projection defines a thickness at said seal opening starting portion that is substantially equal to a thickness of the content accommodation compartment containing the content, wherein said sealed peripheral edge has a thickness that is less than said thickness of the content accommodation compartment;

wherein said projections are provided on the surfaces of both the film materials; and

wherein said projections provided on the surfaces of both the film materials are shifted in positions from each other.

2. The package according to claim 1 , wherein two independent sheets of film materials are mated and sealed at the peripheral edge portions of the mated film materials so as to provide the inner content accommodation compartment.

3. The package according to claim 1 , wherein one sheet of film material is folded at a central portion in a longitudinal direction thereof and the folded film materials are mated and sealed to each other at peripheral edge portions other than the folded one edge portion, and the seal opening starting portion is formed on the edge side portion opposing to the folded one edge side portion.

4. The package according to claim 1 , wherein said projections are provided on the surface of the film material through a fusing process by means of hot air.

5. The package according to claim 1 , wherein said projections are provided on the surface of the film material through a heat-seal treatment.

6. The package according to claim 1 , wherein said projections are provided on the surface of the film material by means of bonding.

7. The package according to claim 1 , wherein each of said projections are composed of a projection member, having a rectangular cross section, disposed at the seal opening starting portion.

8. The package according to claim 7 , wherein said projection member is composed of a linear projection member extending substantially entirely transversely at a portion at which the seal opening starting portion is formed.

9. The package according to claim 1 , wherein said sealed peripheral edge portions of the mated film material have a peel-off strength that is less than a peel-off strength at said seal opening starting portion, wherein a peel-off strength of said sealed peripheral edge at said seal opening starting position comprises approximately 2000 g/15 mm.

10. A package comprising:

a package body formed by mating foldable laminate film materials and sealing peripheral edge portions of the mated film materials so as to form a content accommodation compartment inside the sealed peripheral edge portions, said sealed peripheral edge portions being subjected to an easily peel-off treatment so that the sealed peripheral edge portions are separated and peeled off from each other when the package is opened;

a seal opening starting portion formed outside of one of the sealed peripheral edge portions so that the film materials are separated from each other at the seal opening starting portion; and

at least one projection provided on an inner surface of the film materials forming the seal opening starting portion;

wherein said at least one projection defines a thickness at said seal opening starting portion that is substantially equal to a thickness of the content accommodation compartment containing the content, wherein said sealed peripheral edge has a thickness that is less than said thickness of the content accommodation compartment;

wherein said projection is composed of a projection member, having a circular cross section, disposed at the seal opening starting portion.

11. The package according to claim 10 , wherein said projection member is composed of a linear projection member extending substantially entirely transversely at a portion at which the seal opening starting portion is formed.

12. A package comprising:

a package body formed by mating foldable laminate film materials and sealing peripheral edge portions of the mated film materials so as to form a content accommodation compartment inside the sealed peripheral edge portions, said sealed peripheral edge portions being subjected to an easily peel-off treatment so that the sealed peripheral edge portions are separated and peeled off from each other when the package is opened;

a seal opening starting portion formed outside of one of the sealed peripheral edge portions so that the film materials are separated from each other at the seal opening starting portion; and

at least one projection provided on an inner surface of the film materials forming the seal opening starting portion;

wherein said at least one projection defines a thickness at said seal opening starting portion that is substantially equal to a thickness of the content accommodation compartment containing the content, wherein said sealed peripheral edge has a thickness that is less than said thickness of the content accommodation compartment;

wherein said projection is composed of a curved projection member extending transversely at a portion at which the seal opening starting portion is formed.

13. A package comprising:

a package body formed by mating foldable laminate film materials and sealing peripheral edge portions of the mated film materials so as to form a content accommodation compartment inside the sealed peripheral edge portions, said sealed peripheral edge portions being subjected to an easily peel-off treatment so that the sealed peripheral edge portions are separated and peeled off from each other when the package is opened;

a seal opening starting portion formed outside of one of the sealed peripheral edge portions so that the film materials are separated from each other at the seal opening starting portion; and

at least one projection provided on an inner surface of the film materials forming the seal opening starting portion;

wherein said at least one projection defines a thickness at said seal opening starting portion that is substantially equal to a thickness of the content accommodation compartment containing the content, wherein said sealed peripheral edge has a thickness that is less than said thickness of the content accommodation compartment;

wherein said sealed peripheral edge portions of the mated film material have a peel-off strength that is less than a peel-off strength at said seal opening starting portion.

14. The package according to claim 13 , wherein a peel-off strength of said sealed peripheral edge at said seal opening starting position comprises approximately 2000 g/15 mm.

15. The package according to claim 13 , wherein a peel-off strength of said sealed peripheral edge at said seal opening starting position comprises between approximately 500 and 2000 g/15 mm.

16. A contact lens package, comprising:

a package body formed by mating foldable laminate film materials and sealing peripheral edge portions of the mated film materials so as to form a content accommodation compartment inside the sealed peripheral edge portions, said sealed peripheral edge portions being subjected to an easily peel-off treatment so that the sealed peripheral edge portions are separated and peeled off from each other when the package is opened;

a seal opening starting portion formed outside of one of the sealed peripheral edge portions so that the film materials are separated from each other at the seal opening starting portion; and

at least one projection provided on an inner surface of each of the film materials forming the seal opening starting portion, wherein said projections provided on the surfaces of both the film materials are shifted in positions from each other;

wherein said projection is provided on the surface of the film material by one of a fusing process by means of hot air, a heat-seal treatment, or bonding;

wherein said at least one projection extends substantially across a portion of said contact lens package at the seal opening starting portion and defines a thickness at said seal opening starting portion that is substantially equal to a thickness of the content accommodation compartment containing the content, wherein said sealed peripheral edge has a thickness that is less than said thickness of the content accommodation compartment.

17. The package according to claim 16 , wherein one sheet of film material is folded at a central portion in a longitudinal direction thereof and the folded film materials are mated and sealed to each other at peripheral edge portions other than the folded one edge portion, and the seal opening starting portion is formed on the edge side portion opposing to the folded one edge side portion.

18. A contact lens package, comprising:

a package body formed by mating foldable laminate film materials and sealing peripheral edge portions of the mated film materials so as to form a content accommodation compartment inside the sealed peripheral edge portions, said sealed peripheral edge portions being subjected to an easily peel-off treatment so that the sealed peripheral edge portions are separated and peeled off from each other when the package is opened;

a seal opening starting portion formed outside of one of the sealed peripheral edge portions so that the film materials are separated from each other at the seal opening starting portion; and

at least one projection provided on an inner surface of each of the film materials forming the seal opening starting portion, wherein said projections provided on the surfaces of both the film materials are shifted in positions from each other;

wherein said projection is provided on the surface of the film material by one of a fusing process by means of hot air, a heat-seal treatment, or bonding;

wherein said at least one projection extends substantially across a portion of said contact lens package at the seal opening starting portion and defines a thickness at said seal opening starting portion that is substantially equal to a thickness of the content accommodation compartment containing the content, wherein said sealed peripheral edge has a thickness that is less than said thickness of the content accommodation compartment;

wherein one sheet of film material is folded at a central portion in a longitudinal direction thereof and the folded film materials are mated and sealed to each other at peripheral edge portions other than the folded one edge portion, and the seal opening starting portion is formed on the edge side portion opposing to the folded one edge side portion;

wherein said sealed peripheral edge portions of the mated film material have a peel-off strength that is less than a peel-off strength at said seal opening starting portion, wherein a peel-off strength of said sealed peripheral edge at said seal opening starting position comprises approximately 2000 g/15 mm.